OpenCores
URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

Compare Revisions

  • This comparison shows the changes necessary to convert path 
    /openrisc/trunk/gnu-dev/or1k-gcc
    from Rev 716 to Rev 717
    ↔ Reverse comparison
  •

Rev 716 → Rev 717

/gcc/objc/objc-encoding.c
0,0 → 1,951
/* Routines dealing with ObjC encoding of types
Copyright (C) 1992, 1993, 1994, 1995, 1997, 1998, 1999, 2000, 2001,
2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011
Free Software Foundation, Inc.
 
This file is part of GCC.
 
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
 
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
 
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tree.h"
 
#ifdef OBJCPLUS
#include "cp-tree.h"
#else
#include "c-tree.h"
#include "c-lang.h"
#endif
 
#include "c-family/c-common.h"
#include "c-family/c-objc.h"
 
#include "objc-encoding.h"
#include "objc-act.h"
 
/* For my_build_string(). */
#include "objc-runtime-shared-support.h"
 
/* For BITS_PER_UNIT. */
#include "tm.h"
 
/* When building Objective-C++, we are not linking against the C front-end
and so need to replicate the C tree-construction functions in some way. */
#ifdef OBJCPLUS
#define OBJCP_REMAP_FUNCTIONS
#include "objcp-decl.h"
#endif /* OBJCPLUS */
 
/* Set up for use of obstacks. */
#include "obstack.h"
 
/* This obstack is used to accumulate the encoding of a data type. */
static struct obstack util_obstack;
 
/* This points to the beginning of obstack contents, so we can free
the whole contents. */
static char *util_firstobj;
 
void objc_encoding_init (void)
{
gcc_obstack_init (&util_obstack);
util_firstobj = (char *) obstack_finish (&util_obstack);
}
 
int generating_instance_variables = 0;
 
static void encode_type_qualifiers (tree);
static void encode_type (tree, int, int);
static void encode_field (tree field_decl, int curtype, int format);
 
static tree
objc_method_parm_type (tree type)
{
type = TREE_VALUE (TREE_TYPE (type));
if (TREE_CODE (type) == TYPE_DECL)
type = TREE_TYPE (type);
return type;
}
 
static int
objc_encoded_type_size (tree type)
{
int sz = int_size_in_bytes (type);
 
/* Make all integer and enum types at least as large
as an int. */
if (sz > 0 && INTEGRAL_TYPE_P (type))
sz = MAX (sz, int_size_in_bytes (integer_type_node));
/* Treat arrays as pointers, since that's how they're
passed in. */
else if (TREE_CODE (type) == ARRAY_TYPE)
sz = int_size_in_bytes (ptr_type_node);
return sz;
}
 
/* Encode a method prototype. */
tree
encode_method_prototype (tree method_decl)
{
tree parms;
int parm_offset, i;
char buf[40];
tree result;
 
/* ONEWAY and BYCOPY, for remote object are the only method qualifiers. */
encode_type_qualifiers (TREE_PURPOSE (TREE_TYPE (method_decl)));
 
/* Encode return type. */
encode_type (objc_method_parm_type (method_decl),
obstack_object_size (&util_obstack),
OBJC_ENCODE_INLINE_DEFS);
 
/* Stack size. */
/* The first two arguments (self and _cmd) are pointers; account for
their size. */
i = int_size_in_bytes (ptr_type_node);
parm_offset = 2 * i;
for (parms = METHOD_SEL_ARGS (method_decl); parms;
parms = DECL_CHAIN (parms))
{
tree type = objc_method_parm_type (parms);
int sz = objc_encoded_type_size (type);
 
/* If a type size is not known, bail out. */
if (sz < 0)
{
error_at (DECL_SOURCE_LOCATION (method_decl),
"type %qT does not have a known size",
type);
/* Pretend that the encoding succeeded; the compilation will
fail nevertheless. */
goto finish_encoding;
}
parm_offset += sz;
}
 
sprintf (buf, "%d@0:%d", parm_offset, i);
obstack_grow (&util_obstack, buf, strlen (buf));
 
/* Argument types. */
parm_offset = 2 * i;
for (parms = METHOD_SEL_ARGS (method_decl); parms;
parms = DECL_CHAIN (parms))
{
tree type = objc_method_parm_type (parms);
 
/* Process argument qualifiers for user supplied arguments. */
encode_type_qualifiers (TREE_PURPOSE (TREE_TYPE (parms)));
 
/* Type. */
encode_type (type, obstack_object_size (&util_obstack),
OBJC_ENCODE_INLINE_DEFS);
 
/* Compute offset. */
sprintf (buf, "%d", parm_offset);
parm_offset += objc_encoded_type_size (type);
 
obstack_grow (&util_obstack, buf, strlen (buf));
}
 
finish_encoding:
obstack_1grow (&util_obstack, '\0');
result = get_identifier (XOBFINISH (&util_obstack, char *));
obstack_free (&util_obstack, util_firstobj);
return result;
}
 
/* This is used to implement @encode(). */
tree
objc_build_encode_expr (tree type)
{
tree result;
const char *string;
 
encode_type (type, obstack_object_size (&util_obstack),
OBJC_ENCODE_INLINE_DEFS);
obstack_1grow (&util_obstack, 0); /* null terminate string */
string = XOBFINISH (&util_obstack, const char *);
 
/* Synthesize a string that represents the encoded struct/union. */
result = my_build_string (strlen (string) + 1, string);
obstack_free (&util_obstack, util_firstobj);
return result;
}
 
/* "Encode" a data type into a string, which grows in util_obstack.
 
The format is described in gcc/doc/objc.texi, section 'Type
encoding'.
 
Most of the encode_xxx functions have a 'type' argument, which is
the type to encode, and an integer 'curtype' argument, which is the
index in the encoding string of the beginning of the encoding of
the current type, and allows you to find what characters have
already been written for the current type (they are the ones in the
current encoding string starting from 'curtype').
 
For example, if we are encoding a method which returns 'int' and
takes a 'char **' argument, then when we get to the point of
encoding the 'char **' argument, the encoded string already
contains 'i12@0:4' (assuming a pointer size of 4 bytes). So,
'curtype' will be set to 7 when starting to encode 'char **'.
During the whole of the encoding of 'char **', 'curtype' will be
fixed at 7, so the routine encoding the second pointer can find out
that it's actually encoding a pointer to a pointer by looking
backwards at what has already been encoded for the current type,
and seeing there is a "^" (meaning a pointer) in there. */
 
 
/* Encode type qualifiers encodes one of the "PQ" Objective-C
keywords, ie 'in', 'out', 'inout', 'bycopy', 'byref', 'oneway'.
'const', instead, is encoded directly as part of the type. */
static void
encode_type_qualifiers (tree declspecs)
{
tree spec;
 
for (spec = declspecs; spec; spec = TREE_CHAIN (spec))
{
/* FIXME: Shouldn't we use token->keyword here ? */
if (ridpointers[(int) RID_IN] == TREE_VALUE (spec))
obstack_1grow (&util_obstack, 'n');
else if (ridpointers[(int) RID_INOUT] == TREE_VALUE (spec))
obstack_1grow (&util_obstack, 'N');
else if (ridpointers[(int) RID_OUT] == TREE_VALUE (spec))
obstack_1grow (&util_obstack, 'o');
else if (ridpointers[(int) RID_BYCOPY] == TREE_VALUE (spec))
obstack_1grow (&util_obstack, 'O');
else if (ridpointers[(int) RID_BYREF] == TREE_VALUE (spec))
obstack_1grow (&util_obstack, 'R');
else if (ridpointers[(int) RID_ONEWAY] == TREE_VALUE (spec))
obstack_1grow (&util_obstack, 'V');
else
gcc_unreachable ();
}
}
 
/* Determine if a pointee is marked read-only. Only used by the NeXT
runtime to be compatible with gcc-3.3. */
static bool
pointee_is_readonly (tree pointee)
{
while (POINTER_TYPE_P (pointee))
pointee = TREE_TYPE (pointee);
 
return TYPE_READONLY (pointee);
}
 
/* Encode a pointer type. */
static void
encode_pointer (tree type, int curtype, int format)
{
tree pointer_to = TREE_TYPE (type);
 
if (flag_next_runtime)
{
/* This code is used to be compatible with gcc-3.3. */
/* For historical/compatibility reasons, the read-only qualifier
of the pointee gets emitted _before_ the '^'. The read-only
qualifier of the pointer itself gets ignored, _unless_ we are
looking at a typedef! Also, do not emit the 'r' for anything
but the outermost type! */
if (!generating_instance_variables
&& (obstack_object_size (&util_obstack) - curtype <= 1)
&& (TYPE_NAME (type) && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
? TYPE_READONLY (type)
: pointee_is_readonly (pointer_to)))
obstack_1grow (&util_obstack, 'r');
}
 
if (TREE_CODE (pointer_to) == RECORD_TYPE)
{
if (OBJC_TYPE_NAME (pointer_to)
&& TREE_CODE (OBJC_TYPE_NAME (pointer_to)) == IDENTIFIER_NODE)
{
const char *name = IDENTIFIER_POINTER (OBJC_TYPE_NAME (pointer_to));
 
if (strcmp (name, TAG_OBJECT) == 0) /* '@' */
{
obstack_1grow (&util_obstack, '@');
return;
}
else if (TYPE_HAS_OBJC_INFO (pointer_to)
&& TYPE_OBJC_INTERFACE (pointer_to))
{
if (generating_instance_variables)
{
obstack_1grow (&util_obstack, '@');
obstack_1grow (&util_obstack, '"');
obstack_grow (&util_obstack, name, strlen (name));
obstack_1grow (&util_obstack, '"');
return;
}
else
{
obstack_1grow (&util_obstack, '@');
return;
}
}
else if (strcmp (name, TAG_CLASS) == 0) /* '#' */
{
obstack_1grow (&util_obstack, '#');
return;
}
else if (strcmp (name, TAG_SELECTOR) == 0) /* ':' */
{
obstack_1grow (&util_obstack, ':');
return;
}
}
}
else if (TREE_CODE (pointer_to) == INTEGER_TYPE
&& TYPE_MODE (pointer_to) == QImode)
{
tree pname = TREE_CODE (OBJC_TYPE_NAME (pointer_to)) == IDENTIFIER_NODE
? OBJC_TYPE_NAME (pointer_to)
: DECL_NAME (OBJC_TYPE_NAME (pointer_to));
 
/* (BOOL *) are an exception and are encoded as ^c, while all
other pointers to char are encoded as *. */
if (strcmp (IDENTIFIER_POINTER (pname), "BOOL"))
{
if (!flag_next_runtime)
{
/* The NeXT runtime adds the 'r' before getting here. */
 
/* It appears that "r*" means "const char *" rather than
"char *const". "char *const" is encoded as "*",
which is identical to "char *", so the "const" is
unfortunately lost. */
if (TYPE_READONLY (pointer_to))
obstack_1grow (&util_obstack, 'r');
}
 
obstack_1grow (&util_obstack, '*');
return;
}
}
 
/* We have a normal pointer type that does not get special treatment. */
obstack_1grow (&util_obstack, '^');
encode_type (pointer_to, curtype, format);
}
 
static void
encode_array (tree type, int curtype, int format)
{
tree an_int_cst = TYPE_SIZE (type);
tree array_of = TREE_TYPE (type);
char buffer[40];
 
if (an_int_cst == NULL)
{
/* We are trying to encode an incomplete array. An incomplete
array is forbidden as part of an instance variable; but it
may occur if the instance variable is a pointer to such an
array. */
 
/* So the only case in which an incomplete array could occur
(without being pointed to) is if we are encoding the
arguments or return value of a method. In that case, an
incomplete array argument or return value (eg,
-(void)display: (char[])string) is treated like a pointer
because that is how the compiler does the function call. A
special, more complicated case, is when the incomplete array
is the last member of a struct (eg, if we are encoding
"struct { unsigned long int a;double b[];}"), which is again
part of a method argument/return value. In that case, we
really need to communicate to the runtime that there is an
incomplete array (not a pointer!) there. So, we detect that
special case and encode it as a zero-length array.
 
Try to detect that we are part of a struct. We do this by
searching for '=' in the type encoding for the current type.
NB: This hack assumes that you can't use '=' as part of a C
identifier.
*/
{
char *enc = obstack_base (&util_obstack) + curtype;
if (memchr (enc, '=',
obstack_object_size (&util_obstack) - curtype) == NULL)
{
/* We are not inside a struct. Encode the array as a
pointer. */
encode_pointer (type, curtype, format);
return;
}
}
 
/* Else, we are in a struct, and we encode it as a zero-length
array. */
sprintf (buffer, "[" HOST_WIDE_INT_PRINT_DEC, (HOST_WIDE_INT)0);
}
else if (TREE_INT_CST_LOW (TYPE_SIZE (array_of)) == 0)
sprintf (buffer, "[" HOST_WIDE_INT_PRINT_DEC, (HOST_WIDE_INT)0);
else
sprintf (buffer, "[" HOST_WIDE_INT_PRINT_DEC,
TREE_INT_CST_LOW (an_int_cst)
/ TREE_INT_CST_LOW (TYPE_SIZE (array_of)));
 
obstack_grow (&util_obstack, buffer, strlen (buffer));
encode_type (array_of, curtype, format);
obstack_1grow (&util_obstack, ']');
return;
}
 
/* Encode a vector. The vector type is a GCC extension to C. */
static void
encode_vector (tree type, int curtype, int format)
{
tree vector_of = TREE_TYPE (type);
char buffer[40];
 
/* Vectors are like simple fixed-size arrays. */
 
/* Output ![xx,yy,<code>] where xx is the vector_size, yy is the
alignment of the vector, and <code> is the base type. Eg, int
__attribute__ ((vector_size (16))) gets encoded as ![16,32,i]
assuming that the alignment is 32 bytes. We include size and
alignment in bytes so that the runtime does not have to have any
knowledge of the actual types.
*/
sprintf (buffer, "![" HOST_WIDE_INT_PRINT_DEC ",%d",
/* We want to compute the equivalent of sizeof (<vector>).
Code inspired by c_sizeof_or_alignof_type. */
((TREE_INT_CST_LOW (TYPE_SIZE_UNIT (type))
/ (TYPE_PRECISION (char_type_node) / BITS_PER_UNIT))),
/* We want to compute the equivalent of __alignof__
(<vector>). Code inspired by
c_sizeof_or_alignof_type. */
TYPE_ALIGN_UNIT (type));
obstack_grow (&util_obstack, buffer, strlen (buffer));
encode_type (vector_of, curtype, format);
obstack_1grow (&util_obstack, ']');
return;
}
 
static void
encode_aggregate_fields (tree type, bool pointed_to, int curtype, int format)
{
tree field = TYPE_FIELDS (type);
 
for (; field; field = DECL_CHAIN (field))
{
#ifdef OBJCPLUS
/* C++ static members, and things that are not field at all,
should not appear in the encoding. */
if (TREE_CODE (field) != FIELD_DECL || TREE_STATIC (field))
continue;
#endif
 
/* Recursively encode fields of embedded base classes. */
if (DECL_ARTIFICIAL (field) && !DECL_NAME (field)
&& TREE_CODE (TREE_TYPE (field)) == RECORD_TYPE)
{
encode_aggregate_fields (TREE_TYPE (field),
pointed_to, curtype, format);
continue;
}
 
if (generating_instance_variables && !pointed_to)
{
tree fname = DECL_NAME (field);
 
obstack_1grow (&util_obstack, '"');
 
if (fname && TREE_CODE (fname) == IDENTIFIER_NODE)
obstack_grow (&util_obstack,
IDENTIFIER_POINTER (fname),
strlen (IDENTIFIER_POINTER (fname)));
 
obstack_1grow (&util_obstack, '"');
}
 
encode_field (field, curtype, format);
}
}
 
static void
encode_aggregate_within (tree type, int curtype, int format, int left,
int right)
{
tree name;
/* NB: aggregates that are pointed to have slightly different encoding
rules in that you never encode the names of instance variables. */
int ob_size = obstack_object_size (&util_obstack);
bool inline_contents = false;
bool pointed_to = false;
 
if (flag_next_runtime)
{
if (ob_size > 0 && *(obstack_next_free (&util_obstack) - 1) == '^')
pointed_to = true;
 
if ((format == OBJC_ENCODE_INLINE_DEFS || generating_instance_variables)
&& (!pointed_to || ob_size - curtype == 1
|| (ob_size - curtype == 2
&& *(obstack_next_free (&util_obstack) - 2) == 'r')))
inline_contents = true;
}
else
{
/* c0 and c1 are the last two characters in the encoding of the
current type; if the last two characters were '^' or '^r',
then we are encoding an aggregate that is "pointed to". The
comment above applies: in that case we should avoid encoding
the names of instance variables.
*/
char c1 = ob_size > 1 ? *(obstack_next_free (&util_obstack) - 2) : 0;
char c0 = ob_size > 0 ? *(obstack_next_free (&util_obstack) - 1) : 0;
 
if (c0 == '^' || (c1 == '^' && c0 == 'r'))
pointed_to = true;
 
if (format == OBJC_ENCODE_INLINE_DEFS || generating_instance_variables)
{
if (!pointed_to)
inline_contents = true;
else
{
/* Note that the check (ob_size - curtype < 2) prevents
infinite recursion when encoding a structure which is
a linked list (eg, struct node { struct node *next;
}). Each time we follow a pointer, we add one
character to ob_size, and curtype is fixed, so after
at most two pointers we stop inlining contents and
break the loop.
 
The other case where we don't inline is "^r", which
is a pointer to a constant struct.
*/
if ((ob_size - curtype <= 2) && !(c0 == 'r'))
inline_contents = true;
}
}
}
 
/* Traverse struct aliases; it is important to get the
original struct and its tag name (if any). */
type = TYPE_MAIN_VARIANT (type);
name = OBJC_TYPE_NAME (type);
/* Open parenth/bracket. */
obstack_1grow (&util_obstack, left);
 
/* Encode the struct/union tag name, or '?' if a tag was
not provided. Typedef aliases do not qualify. */
#ifdef OBJCPLUS
/* For compatibility with the NeXT runtime, ObjC++ encodes template
args as a composite struct tag name. */
if (name && TREE_CODE (name) == IDENTIFIER_NODE
/* Did this struct have a tag? */
&& !TYPE_WAS_ANONYMOUS (type))
obstack_grow (&util_obstack,
decl_as_string (type, TFF_DECL_SPECIFIERS | TFF_UNQUALIFIED_NAME),
strlen (decl_as_string (type, TFF_DECL_SPECIFIERS | TFF_UNQUALIFIED_NAME)));
#else
if (name && TREE_CODE (name) == IDENTIFIER_NODE)
obstack_grow (&util_obstack,
IDENTIFIER_POINTER (name),
strlen (IDENTIFIER_POINTER (name)));
#endif
else
obstack_1grow (&util_obstack, '?');
 
/* Encode the types (and possibly names) of the inner fields,
if required. */
if (inline_contents)
{
obstack_1grow (&util_obstack, '=');
encode_aggregate_fields (type, pointed_to, curtype, format);
}
/* Close parenth/bracket. */
obstack_1grow (&util_obstack, right);
}
 
/* Encode a bitfield NeXT-style (i.e., without a bit offset or the underlying
field type. */
static void
encode_next_bitfield (int width)
{
char buffer[40];
sprintf (buffer, "b%d", width);
obstack_grow (&util_obstack, buffer, strlen (buffer));
}
 
/* Encodes 'type', ignoring type qualifiers (which you should encode
beforehand if needed) with the exception of 'const', which is
encoded by encode_type. See above for the explanation of
'curtype'. 'format' can be OBJC_ENCODE_INLINE_DEFS or
OBJC_ENCODE_DONT_INLINE_DEFS. */
static void
encode_type (tree type, int curtype, int format)
{
enum tree_code code = TREE_CODE (type);
 
/* Ignore type qualifiers other than 'const' when encoding a
type. */
 
if (type == error_mark_node)
return;
 
if (!flag_next_runtime)
{
if (TYPE_READONLY (type))
obstack_1grow (&util_obstack, 'r');
}
 
switch (code)
{
case ENUMERAL_TYPE:
if (flag_next_runtime)
{
/* Kludge for backwards-compatibility with gcc-3.3: enums
are always encoded as 'i' no matter what type they
actually are (!). */
obstack_1grow (&util_obstack, 'i');
break;
}
/* Else, they are encoded exactly like the integer type that is
used by the compiler to store them. */
case INTEGER_TYPE:
{
char c;
switch (GET_MODE_BITSIZE (TYPE_MODE (type)))
{
case 8: c = TYPE_UNSIGNED (type) ? 'C' : 'c'; break;
case 16: c = TYPE_UNSIGNED (type) ? 'S' : 's'; break;
case 32:
{
tree int_type = type;
if (flag_next_runtime)
{
/* Another legacy kludge for compatiblity with
gcc-3.3: 32-bit longs are encoded as 'l' or 'L',
but not always. For typedefs, we need to use 'i'
or 'I' instead if encoding a struct field, or a
pointer! */
int_type = ((!generating_instance_variables
&& (obstack_object_size (&util_obstack)
== (unsigned) curtype))
? TYPE_MAIN_VARIANT (type)
: type);
}
if (int_type == long_unsigned_type_node
|| int_type == long_integer_type_node)
c = TYPE_UNSIGNED (type) ? 'L' : 'l';
else
c = TYPE_UNSIGNED (type) ? 'I' : 'i';
}
break;
case 64: c = TYPE_UNSIGNED (type) ? 'Q' : 'q'; break;
case 128: c = TYPE_UNSIGNED (type) ? 'T' : 't'; break;
default: gcc_unreachable ();
}
obstack_1grow (&util_obstack, c);
break;
}
case REAL_TYPE:
{
char c;
/* Floating point types. */
switch (GET_MODE_BITSIZE (TYPE_MODE (type)))
{
case 32: c = 'f'; break;
case 64: c = 'd'; break;
case 96:
case 128: c = 'D'; break;
default: gcc_unreachable ();
}
obstack_1grow (&util_obstack, c);
break;
}
case VOID_TYPE:
obstack_1grow (&util_obstack, 'v');
break;
 
case BOOLEAN_TYPE:
obstack_1grow (&util_obstack, 'B');
break;
 
case ARRAY_TYPE:
encode_array (type, curtype, format);
break;
 
case POINTER_TYPE:
#ifdef OBJCPLUS
case REFERENCE_TYPE:
#endif
encode_pointer (type, curtype, format);
break;
 
case RECORD_TYPE:
encode_aggregate_within (type, curtype, format, '{', '}');
break;
 
case UNION_TYPE:
encode_aggregate_within (type, curtype, format, '(', ')');
break;
 
case FUNCTION_TYPE: /* '?' means an unknown type. */
obstack_1grow (&util_obstack, '?');
break;
 
case COMPLEX_TYPE:
/* A complex is encoded as 'j' followed by the inner type (eg,
"_Complex int" is encoded as 'ji'). */
obstack_1grow (&util_obstack, 'j');
encode_type (TREE_TYPE (type), curtype, format);
break;
 
case VECTOR_TYPE:
encode_vector (type, curtype, format);
break;
 
default:
warning (0, "unknown type %<%T%> found during Objective-C encoding",
TREE_TYPE (type));
obstack_1grow (&util_obstack, '?');
break;
}
 
if (flag_next_runtime)
{
/* Super-kludge. Some ObjC qualifier and type combinations need
to be rearranged for compatibility with gcc-3.3. */
if (code == POINTER_TYPE && obstack_object_size (&util_obstack) >= 3)
{
char *enc = obstack_base (&util_obstack) + curtype;
 
/* Rewrite "in const" from "nr" to "rn". */
if (curtype >= 1 && !strncmp (enc - 1, "nr", 2))
strncpy (enc - 1, "rn", 2);
}
}
}
 
static void
encode_gnu_bitfield (int position, tree type, int size)
{
enum tree_code code = TREE_CODE (type);
char buffer[40];
char charType = '?';
 
/* This code is only executed for the GNU runtime, so we can ignore
the NeXT runtime kludge of always encoding enums as 'i' no matter
what integers they actually are. */
if (code == INTEGER_TYPE || code == ENUMERAL_TYPE)
{
if (integer_zerop (TYPE_MIN_VALUE (type)))
/* Unsigned integer types. */
{
switch (TYPE_MODE (type))
{
case QImode:
charType = 'C'; break;
case HImode:
charType = 'S'; break;
case SImode:
{
if (type == long_unsigned_type_node)
charType = 'L';
else
charType = 'I';
break;
}
case DImode:
charType = 'Q'; break;
default:
gcc_unreachable ();
}
}
else
/* Signed integer types. */
{
switch (TYPE_MODE (type))
{
case QImode:
charType = 'c'; break;
case HImode:
charType = 's'; break;
case SImode:
{
if (type == long_integer_type_node)
charType = 'l';
else
charType = 'i';
break;
}
case DImode:
charType = 'q'; break;
default:
gcc_unreachable ();
}
}
}
else
{
/* Do not do any encoding, produce an error and keep going. */
error ("trying to encode non-integer type as a bitfield");
return;
}
 
sprintf (buffer, "b%d%c%d", position, charType, size);
obstack_grow (&util_obstack, buffer, strlen (buffer));
}
 
static void
encode_field (tree field_decl, int curtype, int format)
{
#ifdef OBJCPLUS
/* C++ static members, and things that are not fields at all,
should not appear in the encoding. */
if (TREE_CODE (field_decl) != FIELD_DECL || TREE_STATIC (field_decl))
return;
#endif
 
/* Generate the bitfield typing information, if needed. Note the difference
between GNU and NeXT runtimes. */
if (DECL_BIT_FIELD_TYPE (field_decl))
{
int size = tree_low_cst (DECL_SIZE (field_decl), 1);
 
if (flag_next_runtime)
encode_next_bitfield (size);
else
encode_gnu_bitfield (int_bit_position (field_decl),
DECL_BIT_FIELD_TYPE (field_decl), size);
}
else
encode_type (TREE_TYPE (field_decl), curtype, format);
}
 
tree
encode_field_decl (tree field_decl)
{
tree result;
 
encode_field (field_decl,
obstack_object_size (&util_obstack),
OBJC_ENCODE_DONT_INLINE_DEFS);
/* Null terminate string. */
obstack_1grow (&util_obstack, 0);
 
/* Get identifier for the string. */
result = get_identifier (XOBFINISH (&util_obstack, char *));
obstack_free (&util_obstack, util_firstobj);
 
return result;
}
 
/* This routine encodes the attribute of the input PROPERTY according
to following formula:
 
Property attributes are stored as a comma-delimited C string.
Simple attributes such as readonly are encoded as single
character. The parametrized attributes, getter=name and
setter=name, are encoded as a single character followed by an
identifier. Property types are also encoded as a parametrized
attribute. The characters used to encode these attributes are
defined by the following enumeration:
 
enum PropertyAttributes {
kPropertyReadOnly = 'R',
kPropertyBycopy = 'C',
kPropertyByref = '&',
kPropertyDynamic = 'D',
kPropertyGetter = 'G',
kPropertySetter = 'S',
kPropertyInstanceVariable = 'V',
kPropertyType = 'T',
kPropertyWeak = 'W',
kPropertyStrong = 'P',
kPropertyNonAtomic = 'N'
}; */
tree
objc_v2_encode_prop_attr (tree property)
{
const char *string;
tree type = TREE_TYPE (property);
 
obstack_1grow (&util_obstack, 'T');
encode_type (type, obstack_object_size (&util_obstack),
OBJC_ENCODE_INLINE_DEFS);
 
if (PROPERTY_READONLY (property))
obstack_grow (&util_obstack, ",R", 2);
 
switch (PROPERTY_ASSIGN_SEMANTICS (property))
{
case OBJC_PROPERTY_COPY:
obstack_grow (&util_obstack, ",C", 2);
break;
case OBJC_PROPERTY_RETAIN:
obstack_grow (&util_obstack, ",&", 2);
break;
case OBJC_PROPERTY_ASSIGN:
default:
break;
}
 
if (PROPERTY_DYNAMIC (property))
obstack_grow (&util_obstack, ",D", 2);
 
if (PROPERTY_NONATOMIC (property))
obstack_grow (&util_obstack, ",N", 2);
 
/* Here we want to encode the getter name, but only if it's not the
standard one. */
if (PROPERTY_GETTER_NAME (property) != PROPERTY_NAME (property))
{
obstack_grow (&util_obstack, ",G", 2);
string = IDENTIFIER_POINTER (PROPERTY_GETTER_NAME (property));
obstack_grow (&util_obstack, string, strlen (string));
}
 
if (!PROPERTY_READONLY (property))
{
/* Here we want to encode the setter name, but only if it's not
the standard one. */
tree standard_setter = get_identifier (objc_build_property_setter_name (PROPERTY_NAME (property)));
if (PROPERTY_SETTER_NAME (property) != standard_setter)
{
obstack_grow (&util_obstack, ",S", 2);
string = IDENTIFIER_POINTER (PROPERTY_SETTER_NAME (property));
obstack_grow (&util_obstack, string, strlen (string));
}
}
 
/* TODO: Encode strong ('P'), weak ('W') for garbage collection. */
 
if (!PROPERTY_DYNAMIC (property))
{
obstack_grow (&util_obstack, ",V", 2);
if (PROPERTY_IVAR_NAME (property))
string = IDENTIFIER_POINTER (PROPERTY_IVAR_NAME (property));
else
string = IDENTIFIER_POINTER (PROPERTY_NAME (property));
obstack_grow (&util_obstack, string, strlen (string));
}
 
/* NULL-terminate string. */
obstack_1grow (&util_obstack, 0);
string = XOBFINISH (&util_obstack, char *);
obstack_free (&util_obstack, util_firstobj);
return get_identifier (string);
}
/gcc/objc/lang-specs.h
0,0 → 1,58
/* Definitions for specs for Objective-C.
Copyright (C) 1998, 1999, 2002, 2002, 2003, 2005, 2007, 2010, 2011
Free Software Foundation, Inc.
 
This file is part of GCC.
 
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
 
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
 
 
/* This is the contribution to the `default_compilers' array in gcc.c
for objc. */
 
{".m", "@objective-c", 0, 0, 0},
{"@objective-c",
"%{E|M|MM:cc1obj -E %{traditional|traditional-cpp:-traditional-cpp}\
%(cpp_options) %(cpp_debug_options)}\
%{!E:%{!M:%{!MM:\
%{traditional|traditional-cpp:\
%eGNU Objective C no longer supports traditional compilation}\
%{save-temps*|no-integrated-cpp:cc1obj -E %(cpp_options) -o %{save-temps*:%b.mi} %{!save-temps*:%g.mi} \n\
cc1obj -fpreprocessed %{save-temps*:%b.mi} %{!save-temps*:%g.mi} %(cc1_options) %{print-objc-runtime-info} %{gen-decls}}\
%{!save-temps*:%{!no-integrated-cpp:\
cc1obj %(cpp_unique_options) %(cc1_options) %{print-objc-runtime-info} %{gen-decls}}}\
%{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
{"@objective-c-header",
"%{E|M|MM:cc1obj -E %{traditional|traditional-cpp:-traditional-cpp}\
%(cpp_options) %(cpp_debug_options)}\
%{!E:%{!M:%{!MM:\
%{traditional|traditional-cpp:\
%eGNU Objective C no longer supports traditional compilation}\
%{save-temps*|no-integrated-cpp:cc1obj -E %(cpp_options) -o %{save-temps*:%b.mi} %{!save-temps*:%g.mi} \n\
cc1obj -fpreprocessed %b.mi %(cc1_options) %{print-objc-runtime-info} %{gen-decls}\
-o %g.s %{!o*:--output-pch=%i.gch}\
%W{o*:--output-pch=%*}%V}\
%{!save-temps*:%{!no-integrated-cpp:\
cc1obj %(cpp_unique_options) %(cc1_options) %{print-objc-runtime-info} %{gen-decls}\
-o %g.s %{!o*:--output-pch=%i.gch}\
%W{o*:--output-pch=%*}%V}}}}}", 0, 0, 0},
{".mi", "@objective-c-cpp-output", 0, 0, 0},
{"@objective-c-cpp-output",
"%{!M:%{!MM:%{!E:cc1obj -fpreprocessed %i %(cc1_options) %{print-objc-runtime-info} %{gen-decls}\
%{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
{"@objc-cpp-output",
"%nobjc-cpp-output is deprecated; please use objective-c-cpp-output instead\n\
%{!M:%{!MM:%{!E:cc1obj -fpreprocessed %i %(cc1_options) %{print-objc-runtime-info} %{gen-decls}\
%{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
/gcc/objc/objc-encoding.h
0,0 → 1,61
/* Routines dealing with ObjC encoding of types
Copyright (C) 1992, 1993, 1994, 1995, 1997, 1998, 1999, 2000, 2001,
2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011
Free Software Foundation, Inc.
 
This file is part of GCC.
 
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
 
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
 
#ifndef GCC_OBJC_ENCODING_H
#define GCC_OBJC_ENCODING_H
 
/* This is used to initialize the obstacks used by encoding. It
should be called before any encoding function is used. It is
usually done in objc_init(). */
extern void objc_encoding_init (void);
 
/* Encode a method prototype. The format is described in
gcc/doc/objc.texi, section 'Method signatures'. */
extern tree encode_method_prototype (tree method_decl);
 
/* This is used to implement @encode(). See gcc/doc/objc.texi,
section '@encode'. */
extern tree objc_build_encode_expr (tree type);
 
/* (Decide if these can ever be validly changed.) */
#define OBJC_ENCODE_INLINE_DEFS 0
#define OBJC_ENCODE_DONT_INLINE_DEFS 1
 
/* Encode the attributes of a property. */
extern tree objc_v2_encode_prop_attr (tree property);
 
/* Encode the type of a field. Return an identifier with the type
encoding for the field. The type encoding is a null-terminated
string. */
extern tree encode_field_decl (tree field_decl);
 
/* Tells "encode_pointer/encode_aggregate" whether we are generating
type descriptors for instance variables (as opposed to methods).
Type descriptors for instance variables contain more information
than methods (for static typing and embedded structures).
 
TODO: Replace this global variable with an argument that is passed
to the various encode() functions.
 
TODO: Change it to a 'bool'. */
extern int generating_instance_variables;
 
#endif /* GCC_OBJC_ENCODING_H */
/gcc/objc/ChangeLog
0,0 → 1,3294
2011-11-12 Iain Sandoe <iains@gcc.gnu.org>
 
* objc-next-runtime-abi-01.c (objc_eh_personality): Use gcc personality
for Objective-C m32.
 
2011-10-29 Iain Sandoe <iains@gcc.gnu.org>
 
PR target/47997
* objc-act.c (objc_build_string_object): Remove redundant second
call to fix_string_type (). Add a checking assert that we are,
indeed, passed a STRING_CST.
 
2011-10-18 Mikael Pettersson <mikpe@it.uu.se>
 
PR objc/50743
* objc-act.c (check_duplicates): Cast TREE_VEC_LENGTH result to
size_t to avoid signed/unsigned
comparison.
(insert_method_into_method_map): Likewise.
 
2011-10-14 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-map.h: New file.
* objc-map.c: New file.
* config-lang.in (gtfiles): Added objc-map.h.
* Make-lang.in (OBJC_OBJS): Added objc-map.o.
(objc/objc-map.o): New rule.
(objc/objc-act.o): Depend on objc/objc-map.h.
* objc-next-runtime-abi-02.c: Added a TODO comment.
* objc-act.c: Include objc-map.h.
(nst_method_hash_list, cls_method_hash_list): Removed.
(instance_method_map, class_method_map): New.
(cls_name_hash_list, als_name_hash_list): Removed.
(class_name_map, alias_name_map): Removed.
(ivar_offset_hash_list): Removed.
(hash_class_name_enter, hash_class_name_lookup, hash_enter,
hash_lookup, hash_add_attr, add_method_to_hash_list): Removed.
(interface_hash_init): New.
(objc_init): Call interface_hash_init.
(objc_write_global_declarations): Iterate over class_method_map
and instance_method_map instead of cls_method_hash_list and
nst_method_hash_list.
(objc_declare_alias): Use alias_name_map instead of
cls_name_hash_list.
(objc_is_class_name): Use class_name_map and alias_name_map
instead of cls_name_hash_list and als_name_hash_list.
(interface_tuple, interface_htab, hash_interface, eq_interface):
Removed.
(interface_map): New.
(add_class): Renamed to add_interface. Use interface_map instead
of interface_htab.
(lookup_interface): Use interface_map instead of interface_htab.
(check_duplicates): Changed first argument to be a tree,
potentially a TREE_VEC, instead of a hash. Changed implementation
to match.
(lookup_method_in_hash_lists): Use class_method_map and
instance_method_map instead of cls_method_hash_list and
nst_method_hash_list.
(objc_build_selector_expr): Likewise.
(hash_func): Removed.
(hash_init): Create instance_method_map, class_method_map,
class_name_map, and alias_name_map. Do not create
nst_method_hash_list, cls_method_hash_list, cls_name_hash_list,
als_name_hash_list, and ivar_offset_hash_list.
(insert_method_into_method_map): New.
(objc_add_method): Use insert_method_into_method_map instead of
add_method_to_hash_list.
(start_class): Call add_interface instead of add_class.
* objc-act.h (cls_name_hash_list, als_name_hash_list,
nst_method_hash_list, cls_method_hash_list): Removed.
 
2011-10-11 Michael Meissner <meissner@linux.vnet.ibm.com>
 
* objc-next-runtime-abi-01.c (objc_build_exc_ptr): Delete old
interface with two parallel arrays to hold standard builtin
declarations, and replace it with a function based interface that
can support creating builtins on the fly in the future. Change
all uses, and poison the old names. Make sure 0 is not a
legitimate builtin index.
* objc-next-runtime-abi-02.c (objc_build_exc_ptr): Ditto.
* objc-gnu-runtime-abi-01.c (objc_build_exc_ptr): Ditto.
 
2011-07-19 Richard Guenther <rguenther@suse.de>
 
* objc-next-runtime-abi-02.c (objc_v2_build_ivar_ref):
Use fold_build_pointer_plus.
(objc2_build_ehtype_initializer): Likewise.
 
2011-07-11 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-encoding.h (obstack.h): Do not include.
(util_obstack, util_firstobj): Do not declare.
(encode_field_decl): Updated prototype to return a tree and take a
single tree argument. Updated comments.
* objc-encoding.c (util_obstack, util_firstobj): Made static.
(objc_encoding_init): New.
(encode_field_decl): Existing function renamed to encode_field and
made static. New encode_field_decl wrapper function added.
(encode_aggregate_fields): Update call to encode_field_decl to
call encode_field.
* objc-next-runtime-abi-02.c (obstack.h): Do not include.
(util_obstack, util_firstobj): Do not declare.
(build_v2_ivar_list_initializer): Updated call to
encode_field_decl.
* objc-runtime-shared-support.c (obstack.h): Do not include.
(util_obstack, util_firstobj): Do not declare.
(build_ivar_list_initializer): Updated call to encode_field_decl.
* objc-act.c (objc_init): Use objc_encoding_init.
* Make-lang.in (objc/objc-runtime-shared-support.o): Do not depend
on OBSTACK_H.
(objc/objc-gnu-runtime-abi-01.o): Likewise.
(objc/objc-next-runtime-abi-01.o): Likewise.
(objc/objc-next-runtime-abi-02.o): Likewise.
(objc/objc-act.o): Likewise.
2011-07-04 Nicola Pero <nicola.pero@meta-innovation.com>
 
Refactored encoding code into objc-encoding.h and objc-encoding.c.
* objc-act.c (util_obstack, util_firstobj, encode_type_qualifiers,
encode_type, generating_instance_variables, objc_method_parm_type,
objc_encoded_type_size, encode_method_prototype,
objc_build_encode_expr, pointee_is_readonly, encode_pointer,
encode_array, encode_vector, encode_aggregate_fields,
encode_aggregate_within, encode_next_bitfield,
encode_gnu_bitfield, encode_field_decl,
objc_v2_encode_property_attr): Moved to objc-encoding.h and
objc-encoding.c. No change in the actual code.
Include objc-encoding.h.
(objc_init): Added TODO.
(objc_build_property_setter_name): Made non-static so it can be
called from objc-encoding.c.
* objc-act.h (OBJC_ENCODE_INLINE_DEFS,
OBJC_ENCODE_DONT_INLINE_DEFS): Moved to objc-encoding.h.
* objc-runtime-shared-support.h (objc_v2_encode_property_attr,
encode_method_prototype, encode_field_decl,
generating_instance_variables): Moved to objc-encoding.h.
(objc_build_property_setter_name): Declare.
* objc-encoding.c: New.
* objc-encoding.h: New.
* objc-gnu-runtime-abi-01.c: Include objc-encoding.h.
* objc-next-runtime-abi-01.c: Likewise.
* objc-next-runtime-abi-02.c: Likewise.
* objc-runtime-shared-support.c: Likewise.
* Make-lang.in (OBJC_OBJS): Added objc-encoding.o.
(objc/objc-lang.o): Reordered dependencies.
(objc/objc-runtime-shared-support.o): Reordered dependencies.
Added dependencies on objc-encoding.h and on $(GGC_H),
$(DIAGNOSTIC_CORE_H), $(FLAGS_H) and input.h.
(objc/objc-gnu-runtime-abi-01.o): Likewise.
(objc/objc-next-runtime-abi-01.o): Likewise.
(objc/objc-next-runtime-abi-02.o): Likewise.
(objc/objc-act.o): Reordered dependencies. Added dependency on
objc-encoding.h.
(objc/objc-encoding.o): New rule.
 
* objc-encoding.c (encode_type): Use "%<%T%>" format when printing
warning "unknown type %<%T%> found during Objective-C encoding"
instead of using gen_type_name.
2011-06-05 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (receiver_is_class_object): Expanded comment.
(objc_finish_message_expr): Likewise.
 
2011-06-02 Nicola Pero <nicola.pero@meta-innovation.com>
 
PR objc/48539
* objc-act.c (objc_finish_message_expr): Warn if messaging a class
that was only declared using @class without an @interface. Warn
if messaging an instance of a class that was only declared using
@class without an @interface, unless the receiver was also typed
with a protocol list.
 
2011-06-01 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_decl_method_attributes): Implement nonnull
attribute for Objective-C methods.
 
2011-05-21 Nicola Pero <nicola.pero@meta-innovation.com>
 
* config-lang.in (gtfiles): Updated order of files to fix building
when the gcc/cp directory is missing, as in the case of some
release tarballs.
 
2011-05-20 Nathan Froyd <froydnj@codesourcery.com>
 
* objc-act.c (objc_compare_types): Use function_args_iterator
instead of TYPE_ARG_TYPES to compare function argument types.
 
2011-05-13 Toon Moene <toon@moene.org>
 
* objc-next-runtime-abi-02.c (newabi_append_ro):
Add const qualifier to constant variable pointer declaration.
 
2011-05-11 Nathan Froyd <froydnj@codesourcery.com>
 
* objc-act.h (CLASS_NAME, CLASS_SUPER_NAME): Use proper accessors.
(CLASS_NST_METHODS, CLASS_CLS_METHODS): Likewise.
(PROTOCOL_NAME, PROTOCOL_NST_METHODS, PROTOCOL_CLS_METHODS): Likewise.
 
2011-05-05 Nathan Froyd <froydnj@codesourcery.com>
 
* objc-runtime-shared-support.h (get_arg_type_list): Delete.
(build_function_type_for_method): Declare.
* objc-runtime-hooks.h (struct _objc_runtime_hooks_r): Change
type of get_arg_type_base_list field.
* objc-act.h (OBJC_VOID_AT_END): Delete.
* objc-act.c (get_arg_type_list): Delete.
(build_function_type_for_method): New function.
(objc_decl_method_attributes): Call build_function_type_for_method.
(really_start_method): Likewise.
* objc-gnu-runtime-abi-01.c
(gnu_runtime_abi_01_get_type_arg_list_base): Change prototype and
adjust function accordingly. Update header comment.
(build_objc_method_call): Call build_function_type_for_method.
* objc-next-runtime-abi-01.c
(next_runtime_abi_01_get_type_arg_list_base): Change prototype and
adjust function accordingly. Update header comment.
(build_objc_method_call): Call build_function_type_for_method.
* objc-next-runtime-abi-02.c
(next_runtime_abi_02_get_type_arg_list_base): Change prototype and
adjust function accordingly. Update header comment.
(objc_copy_to_temp_side_effect_params): Take fntype instead of a
typelist. Use function_args_iterator for traversing fntype.
(build_v2_build_objc_method_call): Adjust call to it.
Call build_function_type_for_method
 
2011-05-05 Joseph Myers <joseph@codesourcery.com>
 
* objc-act.c (objc_start_method_definition): Add parameter expr.
Update call to start_method_def.
(objc_generate_cxx_ctor_or_dtor, objc_synthesize_getter,
objc_synthesize_setter) Update calls to
objc_start_method_definition.
(objc_get_parm_info): Add parameter expr. Update call to
get_parm_info.
(start_method_def): Add parameter expr. Update call to
objc_get_parm_info.
* objc-gnu-runtime-abi-01.c (build_module_initializer_routine):
Update call to objc_get_parm_info.
* objc-runtime-shared-support.h (objc_get_parm_info): Add extra
parameter.
 
2011-04-26 Jason Merrill <jason@redhat.com>
 
* objc-act.c (objc_fold_objc_type_ref): Remove.
* objc-act.h: Remove prototype.
 
2011-04-21 Nathan Froyd <froydnj@codesourcery.com>
 
* objc-act.c (synth_module_prologue): Call build_function_type_list
instead of build_function_type.
* objc-next-runtime-abi-02.c (next_runtime_02_initialize):
Likewise.
 
2011-04-15 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (ivar_of_class): New.
(objc_is_public): Use ivar_of_class.
 
2011-04-15 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_get_interface_ivars): Removed.
(objc_detect_field_duplicates): New.
(hash_instance_variable): New.
(eq_instance_variable): New.
 
2011-04-14 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_declare_protocols): Renamed to
objc_declare_protocol. Changed first argument to be an identifier
instead of a tree chain of identifiers, so that callers don't have
to create a temporary tree chain.
 
2011-04-14 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_declare_class): Changed to take a single
identifier as argument instead of a tree list. This means callers
don't have to build temporary tree lists to call this function.
(synth_module_prologue): Updated calls to objc_declare_class.
 
2011-04-13 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (build_keyword_selector): Use get_identifier_with_length
instead of get_identifier.
 
2011-04-12 Nathan Froyd <froydnj@codesourcery.com>
 
* objc-lang.c (objc_init_ts): Move code for this function...
* objc-act.c (objc_common_init_ts): ...here. Define.
* objc-act.h (objc_common_init_ts): Declare.
 
2011-04-12 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_build_message_expr): Accept two arguments
instead of one so that callers can simply pass the arguments
without having to create a temporary chain to hold them.
 
2011-04-12 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (comp_proto_with_proto): Do not create and use
inefficient temporary argument lists. Compare the arguments
directly. (match_proto_with_proto): Removed; incorporated into
comp_proto_with_proto ().
 
2011-04-12 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (printable_ivar_name): New.
(add_instance_variable): Call printable_ivar_name() when an error
message needs to be printed. Do not prepare the instance variable
for printing unless there is an actual error.
 
2011-04-12 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_is_class_name, objc_is_id): For efficiency,
avoid calling identifier_global_value() multiple times.
 
2011-04-12 Martin Jambor <mjambor@suse.cz>
 
* objc-act.c (mark_referenced_methods): Call cgraph_get_create_node
instead of cgraph_node.
 
2011-04-06 Joseph Myers <joseph@codesourcery.com>
 
* objc-act.c: Include c-target.h instead of target.h.
* Make-lang.in (objc/objc-act.o): Update dependencies.
 
2011-03-06 Joseph Myers <joseph@codesourcery.com>
 
* lang-specs.h: Match -save-temps* instead of -save-temps.
 
2011-02-26 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_v2_encode_prop_attr): Rewritten.
 
2011-02-23 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (build_private_template): Do not copy the
CLASS_HAS_EXCEPTION_ATTR from the class to the struct.
* objc-act.h (CLASS_HAS_EXCEPTION_ATTR): Define using
TYPE_LANG_SLOT_0.
 
2011-02-22 Nicola Pero <nicola.pero@meta-innovation.com>
 
PR objc/47832
* objc-act.c (flexible_array_type_p): New.
(add_instance_variable): Produce an error if an instance variable
uses flexible array members.
(encode_array): Do not emit an error if encoding a flexible array
type while generating instance variables.
 
2011-02-21 Mike Stump <mikestump@comcast.net>
 
* Make-lang.in (check_objc_parallelize): Refine for 4 processor
machines.
 
2011-02-20 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-gnu-runtime-abi-01.c (TARGET_64BIT): Removed. Removed
usage of padding fields. Do not include tm.h.
* objc-act.c (objc_write_global_declaration): Set input_location
to BUILTINS_LOCATION while generating runtime metadata.
 
2011-01-20 Nicola Pero <nicola.pero@meta-innovation.com>
 
PR objc/47784
* objc-act.c (objc_maybe_build_modify_expr): If 'rhs' has side
effects, do not use a temporary variable.
 
2011-01-19 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-next-runtime-abi-01.c: Updated comments.
* objc-next-runtime-abi-02.c: Same.
 
2011-01-19 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_init, generate_struct_by_value_array): Updated
comments.
 
2011-01-19 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c: Updated comments.
* objc-next-runtime-abi-02.c: Same.
* objc-runtime-shared-support.c: Same.
* objc-runtime-hooks.h: Same.
* objc-act.h: Same.
* objc-gnu-runtime-abi-01.c: Same.
 
2011-01-19 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-gnu-runtime-abi-01.c (objc_generate_v1_gnu_metadata): Do
not generate metadata if there is nothing to put into it.
 
2011-02-17 Iain Sandoe <iains@gcc.gnu.org>
 
* config-lang.in (gtfiles): Updated.
* Make-lang.in (START_HDRS): New.
(OBJC_OBJS): Added new object files.
(objc/objc-act.o): Updated prerequisites.
(objc/objc-lang.o): Updated prerequisites.
(objc/objc-runtime-shared-support.o): New.
(objc/objc-gnu-runtime-abi-01.o): New.
(objc/objc-next-runtime-abi-01.o): New.
(objc/objc-next-runtime-abi-02.o): New.
* objc-runtime-hooks.h: New.
* objc-runtime-shared-support.h: New.
* objc-runtime-shared-support.c: New.
* objc-gnu-runtime-abi-01.c: New.
* objc-next-metadata-tags.h: New.
* objc-next-runtime-abi-01.c: New.
* objc-next-runtime-abi-02.c: New.
* objc-lang.c: Include c-lang.h.
(LANG_HOOKS_EH_PERSONALITY): Removed.
* objc-act.h: Moved many declarations and code from objc-act.c
into objc-act.h to make them available outside objc-act.c.
(objc_eh_runtime_type): Removed.
(objc_eh_personality): Removed.
(CLASS_HAS_EXCEPTION_ATTR): New.
(OCTI_SUPER_SUPERFIELD_ID): New.
(OCTI_V1_PROP_LIST_TEMPL): New.
(OCTI_V1_PROP_NAME_ATTR_CHAIN): New.
(super_superclassfield_id): New.
(objc_prop_list_ptr): New.
(prop_names_attr_chain): New.
* objc-act.c: Include new runtime headers. Moved many #defines
and declarations into objc-act.h and
objc-runtime-shared-support.h. Made some corresponding functions
non-static, and moved some others into
objc-runtime-shared-support.c. Moved metadata generation code
into the new runtime hook files.
(ivar_offset_hash_list): New.
(objc_init): Call generate_struct_value_by_array() before doing
any runtime initialization. Create the appropriate runtime hook
structures.
(init_objc): Removed. Code moved directly into objc_init.
(finish_objc): Removed. Code moved directly into
objc_write_global_declarations.
(objc_write_global_declarations): Do the warn_selector checks
before emitting metadata. Use a runtime hook to emit the
metadata. Do not emit the metadata or do -gen-decls processing if
-fsyntax-only or we are producing a PCH.
(build_objc_exception_stuff): Renamed to
build_common_objc_exception_stuff. Remove TREE_NOTHROW flag from
objc_exception_throw_decl.
(synth_module_prologue): Call runtime initialize hook instead of
building runtime declarations here. Use the
default_constant_string_class_name runtime hook to set the
constant string class name.
(objc_build_string_object): Call the setup_const_string_class_decl
runtime hook instead of setup_string_decl. Call the
build_const_string_constructor runtime hook instead of building
the string object here.
(get_objc_string_decl): Added prop_names_attr case. Removed
gcc_unreachable() at the end.
(objc_begin_catch_clause): Distinguish between @catch (...) and
@catch (id x). Call the begin_catch runtime hook instead of
building the CATCH_EXPR here.
(objc_finish_catch_clause): Call the finish_catch runtime hook
instead of adding the catch here.
(objc_finish_try_stmt): Call the finish_try_stmt runtime hook
instead of doing it here.
(objc_build_throw_stmt): Bail out early for error_mark_node. Call
the build_exc_ptr runtime hook instead of objc_build_exc_ptr.
Call the build_throw_stmt runtime hook instead of building the
throw call here.
(objc_generate_cxx_cdtors): Set has_cxx_cdtors for the GNU runtime
as well.
(get_arg_type_list): Call the get_arg_type_list_base runtime hook
instead of building the list of arguments here.
(receiver_is_class_object): Call the receiver_is_class_object
runtime hook instead of doing the check here. Call the
tag_getclass runtime hook instead of using TAG_GETCLASS.
(objc_finish_message_expr): Call the build_objc_method_call
runtime hook.
(objc_build_protocol_expr): Call the get_protocol_reference
runtime hook.
(objc_build_selector_expr): Call the build_selector_reference
runtime hook.
(build_ivar_reference): Call the build_ivar_reference runtime
hook.
(hash_init): Set up ivar_offset_hash_list.
(start_class): Recognize the objc_exception attribute and store
it.
(continue_class): Use the class_decl and metaclass_decl runtime
hooks.
(build_objc_property_accessor_helpers): Renamed to
build_common_objc_property_accessor_helpers. Do not build
objc_copyStruct_decl, objc_getPropertyStruct_decl and
objc_setPropertyStruct_decl.
(objc_synthesize_getter): Check what struct setter/getter helper
is available instead of checking the type of runtime.
(get_super_receiver): Use the super_superclassfield_ident runtime
hook. Added assert. Use the get_class_super_ref and
get_category_super_ref runtime hooks.
(objc_v2_encode_prop_attr): New.
 
2011-01-17 Nicola Pero <nicola.pero@meta-innovation.com>
 
PR objc/47314
* objc-act.c (finish_objc): When calling check_duplicates to check
duplicated instance methods, set 'is_class' to 0, not 1.
 
2011-01-14 Ben Elliston <bje@au.ibm.com>
 
PR 19162
* objc-act.c (generate_struct_by_value_array): Do not output a
definition for struct_forward_array.
 
2011-01-08 Iain Sandoe <iains@gcc.gnu.org>
 
* objc-act.c (objc_finish_foreach_loop): Mark collection expression
as read.
 
2011-01-02 H.J. Lu <hongjiu.lu@intel.com>
 
* objc-act.c (check_that_protocol_is_defined): Fix a typo.
 
2011-01-02 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (check_that_protocol_is_defined): New.
(lookup_protocol): Call check_that_protocol_is_defined.
 
2010-12-30 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_types_are_equivalent): Fixed comparing protocol
lists. Check them two-ways to fix comparisons when one protocol
implements the other one, or when one list contains duplicated
protocols.
 
2010-12-30 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_add_method): When emitting an error because a
method with the same name but conflicting types is found in the
same class or category interface, print a note with the location
of the original method. Also, improved the error message to
clearly state that the conflict is due to conflicting types, and
produce it for protocols as well. Emit an error if two identical
methods are declared in a protocol, but one is @required and the
other one is @optional.
 
2010-12-30 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (start_class): Warn when a class attribute is
ignored.
(objc_declare_protocols): Warn when a protocol attribute in a
protocol forward-declaration is ignored.
(start_protocol): Warn when a protocol attribute is ignored.
 
2010-12-30 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_set_method_opt): Tidy up error messages. In
particular, explicitly mention whether the error is due to the
@optional or @required keyword instead of mentioning
"@optional/@required".
 
2010-12-29 Nicola Pero <nicola.pero@meta-innovation.com>
 
PR objc/47118
* objc-act.c (objc_build_synchronized): Check the argument of
@synchronized and emit an appropriate error if it is not a valid
Objective-C object. Deal gracefully with that case. Updated
comments and variable names.
 
2010-12-29 Nicola Pero <nicola.pero@meta-innovation.com>
 
PR objc/47075
* objc-act.h (PROPERTY_REF_DEPRECATED_GETTER): New.
* objc-tree.def (PROPERTY_REF): Increased the number of operands
from 3 to 4.
* objc-act.c (objc_finish_message_expr): Added optional argument
allowing to return the deprecated method prototype for deprecated
methods, instead of immediately emitting the deprecation warning.
(objc_maybe_build_component_ref): Do not warn for a deprecated
property. When building the getter call, get the deprecated
method prototype from objc_finish_message_expr() and put it into
the PROPERTY_REF.
(objc_build_class_component_ref): Same change.
(finish_class): Mark the getter and setter as deprecated if they
are generated from a deprecated property.
(objc_gimplify_property_ref): If the getter is deprecated, emit a
deprecation warning.
(objc_build_setter_call, objc_build_message_expr,
objc_finish_foreach_loop): Updated call to
objc_finish_message_expr.
 
2010-12-28 Nicola Pero <nicola.pero@meta-innovation.com>
 
PR objc/47076
* objc-act.c (lookup_protocol): Added 'definition_required'
argument. If 'definition_required', and the protocol is not
defined, emit a warning.
(objc_declare_protocols): Updated call to lookup_protocol.
(start_protocol): Same change.
(check_protocol_recursively): Same change.
(objc_build_protocol_expr): Same change.
(lookup_and_install_protocols): Added definition_required argument.
Pass it to lookup_protocol.
(objc_get_protocol_qualified_type): Updated call to
lookup_and_install_protocols.
(start_class): Updated calls to lookup_and_install_protocols; pass
true to 'definition_required' to get the warnings.
(start_protocol): Updated calls to lookup_and_install_protocols.
 
2010-12-28 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_start_category_interface): Produce an error if
a class extension is found after the class @implementation.
 
2010-12-28 Nicola Pero <nicola.pero@meta-innovation.com>
 
PR objc/47073
* objc-act.c (encode_method_prototype): Fixed both location and
format string of error "type %qT does not have a known size".
 
2010-12-26 Nicola Pero <nicola.pero@meta-innovation.com>
 
* config-lang.in (gtfiles): Added c-family/c-cppbuiltin.c.
 
2010-12-22 Nathan Froyd <froydnj@codesourcery.com>
 
* objc-act.c (next_sjlj_build_enter_and_setjmp): Use prototype_p.
 
2010-12-18 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_init): Call using_eh_for_cleanups.
(objc_init_exceptions): Renamed to objc_maybe_warn_exceptions. Do
not call using_eh_for_cleanups.
(objc_begin_try_stmt): Do not call objc_init_exceptions.
(objc_build_throw_stmt): Updated call to
objc_maybe_warn_exceptions.
 
2010-12-18 Iain Sandoe <iains@gcc.gnu.org>
 
* objc/objc-act.c (objc_eh_personality): Select personality name on
runtime.
(objc_init_exceptions): New.
(objc_begin_try_stmt): Use objc_init_exceptions.
(objc_build_throw_stmt): Likewise.
 
2010-12-10 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_in_class_extension): New.
(objc_start_category_interface): If -fobjc-std=objc1
was specified, produce an error if a class extension is used.
(objc_finish_interface): Reset objc_in_class_extension to false.
(objc_add_property_declaration): Allow a class extension to extend
readonly properties in the main @interface to be readwrite.
(start_class): Added code to deal with class extensions. In that
case, return the existing interface after adding any additional
protocols to it and setting objc_in_class_extension to true.
(continue_class): If in a class extension, do not generate the
instance variable template.
 
2010-12-08 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_build_throw_stmt): Check that the argument of
@throw is an object and emit an error if not.
 
2010-12-08 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_finish_foreach_loop): Use error_at() instead of
error() when printing an error about the iterating variable or
collection not being an object.
 
2010-12-06 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_finish_foreach_loop): Mark the
object_expression as used.
 
2010-12-06 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c: Include c-family/c-objc.h.
* objc-lang.c: Same change.
* Make-lang.in (objc/objc-act.o): Depend on
c-family/c-objc.h.
(objc/objc-lang.o): Same change.
* config-lang.in (gtfiles): Added c-family/c-objc.h.
 
2010-12-02 Joseph Myers <joseph@codesourcery.com>
 
* lang-specs.h: Don't handle -ftraditional.
 
2010-12-02 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_build_throw_stmt): Return error_mark_node and
not NULL_TREE when a @throw is used outside of a @catch block.
 
2010-11-30 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_build_volatilized_type): Removed.
(objc_non_volatilized_type): Removed.
(objc_type_quals_match): Removed.
(local_variables_to_volatilize): New.
(objc_volatilize_decl): Add the decl to volatilize to
local_variables_to_volatilize, but don't volatilize it yet.
(objc_finish_function): New.
* objc-act.h (local_variables_to_volatilize): New.
 
2010-11-29 Nicola Pero <nicola.pero@meta-innovation.com>
Mike Stump <mikestump@comcast.net>
 
Allow 'make check-objc -j2'
* Make-lang.in (lang_checks_parallelized): New.
(check_objc_parallelize): New.
 
2010-11-29 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (start_class): When a class is reimplemented,
generate an error and avoid adding the class to the list of
implemented classes again, but do not return error_mark_node.
 
2010-11-29 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_maybe_build_component_ref): Removed TODO.
 
2010-11-29 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_eh_runtime_type): Avoid ICE if error_mark_node
is passed as argument.
(objc_begin_catch_clause): Added code to deal with an
error_mark_node or NULL_TREE argument. Improved checks for
invalid arguments. Added code to traverse typedefs.
 
2010-11-29 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_demangle): Return immediately if the string is
too short. Detect names that do not need demangling, and return
them unchanged.
 
2010-11-27 Nicola Pero <nicola.pero@meta-innovation.com>
 
Implemented optional properties.
* objc-act.h (PROPERTY_OPTIONAL): New.
* objc-act.c (objc_add_property_declaration): Set
PROPERTY_OPTIONAL if appropriate.
(finish_class): When generating definitions of setter and getter
methods associated with a property for a protocol, mark them as
optional if the property is optional.
(maybe_make_artificial_property_decl): Added 'getter_name'
argument. Set PROPERTY_OPTIONAL.
(objc_maybe_build_component_ref): Updated calls to
maybe_make_artificial_property_decl. Added code for optional,
readonly properties.
(objc_build_class_component_ref): Updated call to
maybe_make_artificial_property_decl.
 
2010-11-27 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_build_struct): Fixed loops that save and
restore TYPE_OBJC_INFO to iterate over all variants of the type; a
special case for the current type is then no longer required.
Duplicate TYPE_LANG_SPECIFIC for each type before restoring
TYPE_OBJC_INFO.
(objc_get_protocol_qualified_type): Updated comments.
 
2010-11-25 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_build_struct): Install TYPE_OBJC_INTERFACE
after finish_struct, not before, otherwise it may be wiped out by
it. This fixes spurious warnings when a class has more than 15
instance variables.
 
2010-11-23 Nicola Pero <nicola.pero@meta-innovation.com>
 
PR objc/24358
* lang-specs.h: Added objective-c-cpp-output. Mapped .mi to
objective-c-cpp-output instead of objc-cpp-output. Print a
deprecation note every time objc-cpp-output is requested.
 
2010-11-22 Joseph Myers <joseph@codesourcery.com>
 
* objc-act.c (write_symbols): Don't declare here.
 
2010-11-22 Nicola Pero <nicola.pero@meta-innovation.com>
 
PR objc/41108
* objc-act.c (objc_generate_write_barrier): Added assert to make sure
this function is only called with the next runtime.
 
2010-11-20 Jakub Jelinek <jakub@redhat.com>
 
PR c/46547
* objc-act.c (in_late_binary_op): Remove.
 
2010-11-19 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_start_class_interface): Do not warn that class
attributes are unimplemented. Pass the attributes to start_class.
(objc_start_category_interface): Updated call to start_class.
(objc_start_class_implementation): Same change.
(objc_start_category_implementation): Same change.
(objc_build_class_component_ref): Warn if the class is deprecated.
(build_private_template): Mark the template as deprecated if the
class is deprecated.
(start_class): Added 'attributes' argument. Emit a warning if
using a deprecated class as superclass of a class, or original
class of a category. Recognize the 'deprecated' attribute when
starting and interface, and mark the interface with
TREE_DEPRECATED if present. Store attributes in the interface.
 
2010-11-19 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (lookup_protocol): Added 'warn_if_deprecated'
argument. If it is 'true' and the protocol is deprecated, emit a
deprecation warning.
(objc_start_protocol): Do not warn that protocol attributes are
unimplemented. Pass the attributes to start_protocol.
(start_protocol): Added attributes argument. Recognize the
'deprecated' attribute and mark the protocols with TREE_DEPRECATED
if present. Store attributes in the protocol.
(objc_declare_protocols): Added 'attributes' argument. Recognize
the 'deprecated' attribute and mark the protocols with
TREE_DEPRECATED if present. Store attributes in the protocol.
Updated call to lookup_protocol.
(objc_build_protocol_expr): Updated call to lookup_protocol.
(check_protocol_recursively): Same change.
(lookup_and_install_protocols): Same change.
* objc-act.h: Updated comments.
 
2010-11-17 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (lookup_method_in_protocol_list): Search methods in
PROTOCOL_OPTIONAL_CLS_METHODS / PROTOCOL_OPTIONAL_NST_METHODS if
they are not found in PROTOCOL_CLS_METHODS / PROTOCOL_NST_METHODS.
 
2010-11-15 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_build_setter_call): New.
(objc_maybe_build_modify_expr): Rewritten to build a compound
statement.
(objc_build_incr_expr_for_property_ref): Updated calls to
objc_maybe_build_modify_expr to call objc_build_setter_call
instead. Use build_modify_expr () instead of build2 (MODIFY_EXPR,
...). Use convert () instead of build1 (NOP_EXPR, ...). Use
TREE_NO_WARNING on the final compound statement to silence C++
warnings.
 
2010-11-15 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_build_incr_expr_for_property_ref): New.
(objc_create_temporary_var): Moved it towards the beginning of the
file so that objc_build_incr_expr_for_property_ref can use it.
 
2010-11-14 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_add_property_declaration): Check that the decl
we received from the parser is a FIELD_DECL; reject array and
bitfield properties. Convert the warning when a property is
readonly and a setter is specified into an error. Convert errors
when a property declaration does not match a property declaration
in a superclass into warnings.
(objc_add_synthesize_declaration_for_property): Use
DECL_BIT_FIELD_TYPE to determine the type of an instance variable
if it is a bitfield. Throw an error if we are asked to synthesize
setters/getters for a bitfield instance variable but the property
is not appropriate - it must be assign and nonatomic. If the
property is readonly, allow the instance variable type to be a
specialization of the property type.
(objc_type_valid_for_messaging): Fixed returning 'false' for a
Class qualified with a protocol when the 'accept_classes' argument
is 'false'.
 
2010-11-13 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_get_protocol_qualified_type): detect cases
where we are asked to attach a protocol to something which is not
an Objective-C object type, and produce an error.
 
2010-11-11 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_add_property_declaration): Check that the type
of a property and of an inherited property match.
(objc_maybe_build_component_ref): Tidied up indentation and
comments.
(objc_common_type): Added new type of check (-5).
(objc_add_synthesize_declaration_for_property): Check that the
property to synthesize and the instance variable to use have the
same type.
 
2010-11-10 Joseph Myers <joseph@codesourcery.com>
 
* objc-act.c (objc_init): Use %' in diagnostic.
(objc_set_method_opt): Remove trailing '.' from diagnostic.
 
2010-11-10 Joseph Myers <joseph@codesourcery.com>
 
* objc-act.c (dump_base_name): Don't declare here.
 
2010-11-08 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_add_dynamic_declaration_for_property): Do not
search for the @property declation only in the current context,
but also in inherited properties. Do not mark the original
PROPERTY_DECL in the @interface or @protocol with
PROPERTY_DYNAMIC.
(check_methods): To check if a method is associated with a
@dynamic property, search for the property in IMPL_PROPERTY_DECL.
(check_accessible_methods): Same change.
* objc-act.h: Updated comment.
 
2010-11-08 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_add_synthesize_declaration_for_property):
Iterate over IMPL_PROPERTY_DECL, not CLASS_PROPERTY_DECL, when
checking for an existing @synthesize or @dynamic declaration.
Search for an inherited @property declaration if none is found in
the local interface. If the required instance variable does not
exist, return instead of trying to continue to prevent a compiler
crash later. Check that the instance variable is not already
being used by another @synthesize.
(objc_add_dynamic_declaration_for_property): Iterate over
IMPL_PROPERTY_DECL, not CLASS_PROPERTY_DECL, when checking for an
existing @synthesize or @dynamic declaration.
(objc_synthesize_getter): Search for the getter declaration in
protocols and superclasses as well.
(objc_synthesize_setter): Search for the setter declaration in
protocols and superclasses as well.
 
2010-11-08 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (lookup_property): When checking categories, also
check the protocols attached to each.
(objc_add_property_declaration): Determine the
PROPERTY_SETTER_NAME and PROPERTY_GETTER_NAME here. Tidied up
error message. Search for an existing property declaration with
the same name which would be inherited from the class hiearchy,
and produce an error if it has incompatible attributes.
(check_methods): Changed second parameter. If the method is a
getter or setter for a property, do not warn if it is inherited as
opposed to implemented directly in the class.
(check_protocol): Updated calls to check_methods.
(finish_class): Do not determine the PROPERTY_SETTER_NAME and
PROPERTY_GETTER_NAME here; this is now done earlier, in
objc_add_property_declaration.
* objc-act.h (CLASS_NAME, CLASS_SUPER_NAME): Added comments.
 
2010-11-06 Nicola Pero <nicola.pero@meta-innovation.com>
 
Fixed using the Objective-C 2.0 dot-syntax with self and super.
* objc-act.c (OBJC_LOOKUP_NO_INSTANCE_METHODS_OF_ROOT_CLASS): New.
(maybe_make_artificial_property_decl): Added 'implementation'
argument. Use OBJC_LOOKUP_NO_INSTANCE_METHODS_OF_ROOT_CLASS when
looking up getters or setters for a class. If an implementation
is specified, search it as well for a getter or setter.
(objc_maybe_build_component_ref): Updated calls to
maybe_make_artificial_property_decl; added code to deal with
'self' and 'super' and with methods declared locally in the
implementation. Store the getter call expression in the
PROPERTY_REF instead of throwing it away.
(objc_build_class_component_ref): Updated calls to
maybe_make_artificial_property_decl, and store the getter call
expression in PROPERTY_REF instead of throwing it away.
(lookup_method_static): Implemented
OBJC_LOOKUP_NO_INSTANCE_METHODS_OF_ROOT_CLASS option.
(objc_gimplify_property_ref): Do not build the getter method call
here; instead use the one stored in the PROPERTY_REF. If it's not
there, produce helpful error messages.
* objc-tree.def (PROPERTY_REF): Increased the number of operands
from 2 to 3. Updated comments.
* objc-act.h (PROPERTY_REF_GETTER_CALL): New.
 
2010-11-06 Iain Sandoe <iains@gcc.gnu.org>
 
PR target/44981
* objc-act.c (objc_build_string_object): Amend for renamed hook.
(objc_string_ref_type_p): New.
(objc_check_format_arg): New.
 
2010-11-04 Nicola Pero <nicola.pero@meta-innovation.com>
 
Fixed using the Objective-C 2.0 dot-syntax with class names.
* objc-act.c (objc_build_class_component_ref): New.
 
2010-11-03 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_add_dynamic_declaration): Allow @dynamic in a
category.
(objc_type_valid_for_messaging): Added 'accept_classes' argument;
if set to 'true', return 'true' for Class objects. Do not remove
more than on pointer indirection.
(objc_add_property_declaration): Only warn about 'assign'
semantics for Objective-C objects if warn_property_assign_default;
and do not warn if the property is readonly or if the type is a Class.
(objc_finish_foreach_loop): Updated calls to
objc_type_valid_for_messaging.
 
2010-11-03 Nicola Pero <nicola.pero@meta-innovation.com>
 
Implemented -fobjc-std=objc1 flag.
* objc-act.c (objc_start_class_interface): If attributes are
specified when flag_objc1_only is set, print an error.
(objc_start_category_interface): Same change.
(objc_start_protocol): Same change.
(objc_add_method_declaration): Same change.
(objc_start_method_definition): Same change.
(objc_build_keyword_decl): Same change.
(objc_set_visibility): If OBJC_IVAR_VIS_PACKAGE is used when
flag_objc1_set is set, print an error.
(objc_set_method_opt): If flag_objc1_only is set, print an error.
(objc_add_property_declaration): Same change.
(objc_add_synthesize_declaration): Same change.
(objc_add_dynamic_declaration): Same change.
(objc_finish_foreach_loop): Same change.
(objc_maybe_build_component_ref): If flag_objc1_only is set,
return immediately.
 
2010-11-03 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (maybe_make_artificial_property_decl): New.
(objc_maybe_build_component_ref): Call
maybe_make_artificial_property_decl if a property can not be
found. Do not call objc_finish_message_expr if
PROPERTY_HAS_NO_GETTER.
* objc-act.h Updated comments.
(PROPERTY_HAS_NO_GETTER): New.
(PROPERTY_HAS_NO_SETTER): New.
* objc-tree.def: Updated comment.
 
2010-11-01 Nicola Pero <nicola.pero@meta-innovation.com>
 
Implemented format and noreturn attributes for Objective-C methods.
* objc-act.c (objc_start_method_definition): If method attributes
are specified emit a warning and ignore them.
(build_objc_method_call): Moved deprecation warnings from here ...
(objc_finish_message_expr): to here. Do not emit deprecation
warnings if the receiver is of type 'id'.
(really_start_method): Install 'deprecation' and 'noreturn'
attributes.
(objc_decl_method_attributes): Carefully filter out the list of
attributes, allowing only "noreturn", "format", "sentinel" and
"deprecated". In the case of "format", adjust the arguments.
Always process the attributes in the same way no matter if
"sentinel" is in the list or not.
 
2010-11-01 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_maybe_build_component_ref): Warn about using
deprecated properties.
(objc_maybe_printable_name): Support PROPERTY_DECL.
 
2010-11-01 Nicola Pero <nicola.pero@meta-innovation.com>
 
Implemented Objective-C 2.0 property accessors.
* objc-act.h (enum objc_tree_index): Added OCTI_GET_PROPERTY_DECL,
OCTI_SET_PROPERTY_DECL, OCTI_COPY_STRUCT_DECL,
OCTI_GET_PROPERTY_STRUCT_DECL and OCTI_SET_PROPERTY_STRUCT_DECL.
(objc_getProperty_decl): New.
(objc_setProperty_decl): New.
(objc_copyStruct_decl): New.
(objc_getPropertyStruct_decl): New.
(objc_setPropertyStruct_decl): New.
* objc-act.c (build_objc_property_accessor_helpers): New.
(synth_module_prologue): Call
build_objc_property_accessor_helpers.
(lookup_ivar): New.
(objc_synthesize_getter): Implemented synthesizing getters that
work with properties that are not nonatomic, assign properties.
(objc_synthesize_setter): Implemented synthesizing setters that
work with properties that are not nonatomic, assign properties.
 
2010-10-30 Nicola Pero <nicola.pero@meta-innovation.com>
 
Implemented Objective-C 2.0 @property, @synthesize and @dynamic.
* objc-tree.def (PROPERTY_REF): New.
* objc-act.h: Added comments for all the PROPERTY_ macros.
(PROPERTY_NAME): Use DECL_NAME.
(PROPERTY_COPIES): Removed.
(PROPERTY_READONLY): Use DECL_LANG_FLAG_0 for it.
(PROPERTY_NONATOMIC): New.
(objc_property_assign_semantics): Make it a typedef.
(PROPERTY_ASSIGN_SEMANTICS): New.
(PROPERTY_DYNAMIC): New.
(PROPERTY_REF_OBJECT): New.
(PROPERTY_REF_PROPERTY_DECL): New.
* objc-act.c (CALL_EXPR_OBJC_PROPERTY_GETTER): Removed.
(in_objc_property_setter_name_context): Removed.
(objc_add_property_declaration): Removed copies and ivar arguments
and code supporting them. Fixed recovering when readonly and
setter attributes are specified. Removed support for @property in
@implementation context. Updated error message. Double-check
that a property does not have a DECL_INITIAL. Validate the
property assign semantics and emit appropriate errors and
warnings. Check for duplicate property declarations. Set
DECL_SOURCE_LOCATION, TREE_DEPRECATED, PROPERTY_NONATOMIC,
PROPERTY_ASSIGN_SEMANTICS and PROPERTY_DYNAMIC of the new
PROPERTY_DECL. Do not set PROPERTY_COPIES. Set
PROPERTY_IVAR_NAME to NULL_TREE.
(objc_build_getter_call): Renamed to
objc_maybe_build_component_ref. If the property is not found in
the interface, search in the protocol list. Do not generate the
getter call; instead, build and return a PROPERTY_REF.
(objc_is_property_ref): New.
(objc_setter_func_call): Removed.
(get_selector_from_reference): Removed.
(is_property): Removed.
(objc_build_setter_call): Renamed to objc_maybe_build_modify_expr.
Updated to work on a PROPERTY_REF and use the PROPERTY_DECL from
the PROPERTY_REF. Generate an error if the property is read-only.
(build_property_reference): Removed.
(objc_finish_message_expr): Removed check to produce "readonly
property can not be set" error when
in_objc_property_setter_name_context. We now generate the error
earlier, in objc_maybe_build_modify_expr, which will only generate
the setter call if the property is readwrite.
(check_methods): Recognize dynamic properties.
(check_methods_accessible): Same change.
(objc_build_property_ivar_name): Removed.
(objc_build_property_setter_name): Dropped bool argument. Always
add the ':' at the end.
(objc_gen_one_property_datum): Removed.
(objc_process_getter_setter): Removed.
(objc_synthesize_getter): Mark 'klass' argument as unused. Use
PROPERTY_GETTER_NAME instead of PROPERTY_NAME. Set the
DECL_SOURCE_LOCATION of the new method to be the same as the one
for the @synthesize. Always use PROPERTY_IVAR_NAME as it is
instead of trying to guess what it should be. Removed use of
CLASS_IVARS. Use the location of @synthesize for c_finish_return
and c_end_compound_statement.
(objc_synthesize_setter): Mark 'klass' argument as unused. Use
PROPERTY_SETTER_NAME instead of trying to guess what it should be.
Set the DECL_SOURCE_LOCATION of the new method to be the same as
the one for the @synthesize. Always use PROPERTY_IVAR_NAME as it
is instead of trying to guess what it should be. Removed use of
CLASS_IVARS. Use the location of @synthesize for c_finish_return
and c_end_compound_statement. Emit an error and keep going,
instead of aborting, if the setter prototype does not have the
expected argument.
(objc_add_synthesize_declaration_for_property): New.
(objc_add_synthesize_declaration): Removed ATTRIBUTE_UNUSED from
all arguments. Improved error message. Filled in the rest of the
function, which used to be a placeholder, with an actual
implementation.
(objc_add_dynamic_declaration_for_property): New.
(objc_add_dynamic_declaration): Removed ATTRIBUTE_UNUSED from all
arguments. Improved error message. Filled in the rest of the
function, which used to be a placeholder, with an actual
implementation.
(objc_gen_property_data): Rewritten.
(finish_class): Added explicit switch cases for
CLASS_INTERFACE_TYPE, CATEGORY_INTERFACE_TYPE and
PROTOCOL_INTERFACE_TYPE. Added a default switch case which is
gcc_unreachable. Rewritten the processing of properties, in
particular to not synthesize prototypes for getters and setters if
they already exist and to install the getter and setter names into
PROPERTY_GETTER_NAME and PROPERTY_SETTER_NAME. Do not generate
warnings about setter, getter and ivar property attributes.
(objc_lookup_ivar): Removed support for properties.
(objc_gimplify_property_ref): New.
(objc_gimplify_expr): Use a switch. In case of a PROPERTY_REF, call
objc_gimplify_property_ref.
 
2010-10-27 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_add_property_declaration): Added arguments to
pass the various property attributes that were parsed with the
property declaration. Process arguments to determine the final
property attributes and produce error messages as appropriate.
Added temporary code to keep the compiler silent about variables
set but not used - for new attributes that are only checked but
have no effect yet.
(property_readonly): Removed.
(property_setter): Removed.
(property_getter): Removed.
(property_ivar): Removed.
(property_copies): Removed.
(objc_set_property_attr): Removed.
* objc-act.h (enum property_assign_semantics): New.
 
2010-10-27 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_add_property_variable): Renamed to
objc_add_property_declaration. Added location argument. Updated
warnings and errors to use it. Use error, not fatal_error, if a
property declaration is found outside an interface or
implementation context.
 
2010-10-24 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_build_keyword_decl): Updated comments. Do not
emit a warning that method parameter attributes are unimplemented.
Instead, store them into DECL_ATTRIBUTES of the KEYWORD_DECL.
(start_method_def): Copy attributes from each KEYWORD_DECL into
the corresponding PARM_DECL.
(objc_warn_deprecated_use): Removed.
(build_objc_method_call): Call warn_deprecated_use, not
objc_warn_deprecated_use.
(objc_maybe_printable_name): Do not try to get the identifier name
of DECLs that we don't recognize. Immediately return NULL for them.
(objc_printable_name): Removed C++-specific case, which is no
longer used. Updated comments.
 
2010-10-23 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (OBJC_GEN_METHOD_LABEL): Updated comments.
(objc_demangle): Return NULL if demangling can not be done because
the string to demangle is not an Objective-C mangled method name.
Be smarter in demangling method names so that at least for methods
with no arguments we are able to almost always demangle '_' correctly.
Updated comments.
(objc_maybe_printable_name): New.
(objc_printable_name): Call objc_maybe_printable_name. If it
returns NULL, call cxx_printable_name in Objective-C++.
 
2010-10-21 Iain Sandoe <iains@gcc.gnu.org>
 
Based on the CFString implementation in FSF apple/trunk branch.
 
* objc/objc-act.c (objc_build_string_object): Handle CFStrings.
 
2010-10-21 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (get_objc_string_decl): Use a switch instead of a
chain of ifs. Use gcc_unreachable instead of abort.
(add_objc_string): Same change.
(generate_protocol_list): Same change - twice.
(synth_id_with_class_suffix): Same change.
(build_keyword_selector): Same change - twice.
(objc_build_message_expr): Same change.
(objc_build_selector_expr): Same change.
(check_methods): Same change - and added missing gcc_unreachable
for default case.
(check_methods_accessible): Same change - twice, and added missing
gcc_unreachable for default case in one of them.
(start_class): Same change - and added missing gcc_unreachable for
default case.
(continue_class): Same change.
(objc_gen_property_data): Same change.
(finish_class): Same change.
(encode_type_qualifiers): Added missing gcc_unreachable.
(encode_type): Small code tidy up to reduce duplicated code. Use
gcc_unreachable instead of abort - twice.
(encode_gnu_bitfield): Use a switch instead of a chain of ifs -
twice. Added missing gcc_unreachable for default case - twice.
(dump_interface): Use a switch instead of a chain of ifs.
(handle_impent): Same change.
 
2010-10-20 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.h (objc_inherit_code): Removed.
* objc-act.c (objc_inherit_code): Removed.
(objc_set_method_type): Removed.
(objc_build_method_signature): Added is_class_method argument.
Use it instead of the global objc_inherit_code variable.
(objc_add_method_declaration): Same change.
(objc_start_method_definition): Same change.
(objc_generate_cxx_ctor_or_dtor): Updated call to
objc_start_method_definition. Do not call objc_set_method_type.
(adjust_type_for_id_default): Mark as inline.
(objc_synthesize_getter): Updated call to
objc_start_method_definition. Do not set objc_inherit_code.
(objc_synthesize_setter): Updated call to
objc_start_method_definition. Do not set objc_inherit_code.
 
2010-10-20 Nicola Pero <nicola.pero@meta-innovation.com>
 
Merge from 'apple/trunk' branch on FSF servers. Obvious updates
to gcc_alloc_xxx calls in hash_init and hash_class_name_enter to
get it to compile in the current trunk.
 
2006-01-27 Fariborz Jahanian <fjahanian@apple.com>
 
Radar 4345837
* objc/objc-act.c (hash_class_name_enter): New.
(hash_class_name_lookup): New.
(objc_declare_alias): Enter alias name into hash table.
(objc_declare_class): Enter class name into hash table.
(objc_is_class_name): Do a hash look up of class name.
(hash_init): Initialize the two new hash tables.
* objc-act.h: Added cls_name_hash_list and als_name_hash_list
declarations, removed class_chain and alias_chain.
 
2010-10-20 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-lang.c (finish_file): Removed.
* objc-act.c (objc_finish_file): Renamed to
objc_write_global_declarations. Do not try to instantiate C++
templates when compiling Objective-C++ as this is now
automatically done before this function is called. Do not check
for syntax-only run or PCH generation as this is done by the
callers.
* objc-act.h (objc_finish_file): Removed.
 
2010-10-18 Nicola Pero <nicola.pero@meta-innovation.com>
 
Implemented parsing @synthesize and @dynamic for
Objective-C/Objective-C++.
* objc-act.c (objc_add_synthesize_declaration): New.
(objc_add_dynamic_declaration): New.
 
2010-10-18 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (lookup_and_install_protocols): Return NULL if passed
error_mark_node.
 
2010-10-18 Nicola Pero <nicola.pero@meta-innovation.com>
 
Merge from 'apple/trunk' branch on FSF servers.
 
2006-03-10 Fariborz Jahanian <fjahanian@apple.com>
 
Radar 4407151
* objc/objc-act.c (objc_is_class_name): template parameter is not
an objective class name.
(objc_generate_cxx_cdtors): Check for the null
objc_implementation_context.
 
2010-10-18 Nicola Pero <nicola.pero@meta-innovation.com>
 
Merge from 'apple/trunk' branch on FSF servers.
 
2005-11-08 Fariborz Jahanian <fjahanian@apple.com>
 
Radar 4330422
* objc/objc-act.c (objc_non_volatilized_type): New
 
2005-10-07 Fariborz Jahanian <fjahanian@apple.com>
 
Radar 4204796
* objc-act.c (objc_build_volatilized_type): Build 'volatilzed'
types with proper attribute set and correctly.
(objc_volatilize_decl): Remove unneeded code.
(objc_type_quals_match): Use the new attribute to check on
'volatilzed' type.
(hash_init): removed unneeded code.
 
2010-10-17 Nicola Pero <nicola.pero@meta-innovation.com>
 
Merge from 'apple/trunk' branch on FSF servers.
 
2006-03-27 Fariborz Jahanian <fjahanian@apple.com>
 
Radar 4133425
* objc-act.c (objc_diagnose_private_ivar): New.
 
2010-10-17 Iain Sandoe <iains@gcc.gnu.org>
 
* objc-act.c: Rename 'objc_public_flag' to objc_ivar_visibility and
make its type 'objc_ivar_visibility_kind'.
(objc_start_class_interface): Update to use visibility enum.
(objc_start_class_implementation): Likewise.
(objc_set_visibility): Update to use visibility enum, warn that
@package is handle as per @public.
(add_instance_variable): Handle OBJC_IVAR_VIS_PACKAGE.
* objc-act.h: Rename 'objc_public_flag' to objc_ivar_visibility and
make its type 'objc_ivar_visibility_kind'.
 
2010-10-14 Iain Sandoe <iains@gcc.gnu.org>
 
merge from FSF apple 'trunk' branch.
2006 Fariborz Jahanian <fjahanian@apple.com>
 
Radars 4436866, 4505126, 4506903, 4517826
* objc-act.c (CALL_EXPR_OBJC_PROPERTY_GETTER): New.
property_readonly, property_getter, property_setter, property_ivar,
property_copies, in_objc_property_setter_name_context: New vars.
(objc_set_property_attr): New.
(objc_add_property_variable): New.
(lookup_property_in_list): New.
(lookup_property): New.
(objc_build_getter_call): New.
(objc_setter_func_call): New.
(get_selector_from_reference): New.
(objc_build_setter_call): New.
(is_property): New.
(build_property_reference): New.
(objc_finish_message_expr): Detect readonly property and warn.
(objc_build_property_ivar_name): New.
(objc_build_property_setter_name): New.
(objc_gen_one_property_datum): New.
(objc_process_getter_setter): New.
(objc_synthesize_getter): New.
(objc_synthesize_setter): New.
(objc_gen_property_data): New.
(finish_class): Generate property data.
(comp_proto_with_proto): Separated from ...
(match_proto_with_proto): ... New.
(objc_lookup_ivar): Handle properties.
* objc-tree.def (PROPERTY_DECL): New tree code.
* objc-act.h: CLASS_LANG_SLOT_ELTS, PROTOCOL_LANG_SLOT_ELTS update size.
(METHOD_PROPERTY_CONTEXT): New.
(PROPERTY_NAME): New.
(PROPERTY_GETTER_NAME): New.
(PROPERTY_SETTER_NAME): New.
(PROPERTY_IVAR_NAME): New.
(PROPERTY_READONLY): New.
(PROPERTY_COPIES): New.
(TOTAL_CLASS_RAW_IVARS): New.
(CLASS_PROPERTY_DECL): New.
(IMPL_PROPERTY_DECL): New.
* objc-lang.c (objc_init_ts): Update fields for property_decl.
 
2010-10-13 Richard Henderson <rth@redhat.com>
 
* objc-act.c (objc_eh_personality): Update call to
build_personality_function.
 
2010-10-13 Iain Sandoe <iains@gcc.gnu.org>
 
merge from FSF apple 'trunk' branch.
 
2006-04-26 Fariborz Jahanian <fjahanian@apple.com>
Radar 3803157 (method attributes)
* objc/objc-act.h (METHOD_TYPE_ATTRIBUTES): New macro.
* objc/objc-act.c (objc_decl_method_attributes): New.
(objc_add_method_declaration): Process method's attribute.
(objc_start_method_definition): Ditto.
(build_objc_method_call): Inject method attribute into
built function type.
(objc_method_decl): New.
(objc_warn_deprecated)use): New.
 
2010-10-07 Andi Kleen <ak@linux.intel.com>
 
* Make-lang.in (cc1obj-dummy): Remove.
(cc1obj-checksum): Change to run checksum over object files
and options only.
 
2010-10-07 Nicola Pero <nicola.pero@meta-innovation.com>
 
PR objc/45925
* objc-act.c (objc_finish_foreach_loop): Convert return value of
countByEnumeratingWithState:objects:count: to long unsigned int.
 
2010-10-07 Iain Sandoe <iains@gcc.gnu.org>
 
* objc-act.c (build_objc_method_call): Replace calls to
build_function_call () with the VEC equivalent. Construct parameter
lists as VECs.
 
2010-10-07 Iain Sandoe <iains@gcc.gnu.org>
 
* objc-act.c (objc_build_message_expr): Call mark_exp_read () to
signal that the receiver has been used.
 
2010-10-06 Nicola Pero <nicola.pero@meta-innovation.com>
 
* README: Obsolete file removed.
 
2010-10-06 Nicola Pero <nicola.pero@meta-innovation.com>
 
Implemented fast enumeration for Objective-C.
* objc-act.c (build_fast_enumeration_state_template): New.
(TAG_ENUMERATION_MUTATION): New.
(TAG_FAST_ENUMERATION_STATE): New.
(synth_module_prologue): Call build_fast_enumeration_state_template() and set up
objc_enumeration_mutation_decl.
(objc_create_temporary_var): Allow providing a name to temporary
variables.
(objc_build_exc_ptr): Updated calls to
objc_create_temporary_var().
(next_sjlj_build_try_catch_finally): Same change.
(objc_finish_foreach_loop): New.
* objc-act.h: Added OCTI_FAST_ENUM_STATE_TEMP,
OCTI_ENUM_MUTATION_DECL, objc_fast_enumeration_state_template,
objc_enumeration_mutation_decl.
 
Merge from 'apple/trunk' branch on FSF servers.
 
2006-04-12 Fariborz Jahanian <fjahanian@apple.com>
 
Radar 4507230
* objc-act.c (objc_type_valid_for_messaging): New routine to check
for valid objc object types.
(objc_finish_foreach_loop): Check for invalid objc objects in
foreach header.
 
2010-10-05 Nicola Pero <nicola.pero@meta-innovation.com>
 
Merge from 'apple/trunk' branch on FSF servers.
 
2005-10-17 Fariborz Jahanian <fjahanian@apple.com>
 
Radar 4290840
* objc-act.c (objc_start_method_definition): Check for
error_mark_node for the selector name and make a quick exit.
 
2010-10-04 Andi Kleen <ak@linux.intel.com>
 
* Make-lang.in (cc1obj-dummy, cc1obj): Add + to build rule.
 
2010-09-30 Iain Sandoe <iains@gcc.gnu.org>
 
merge from FSF 'apple/trunk' branch.
2006-01-30 Fariborz Jahanian <fjahanian@apple.com>
 
Radar 4386773
* objc/objc-act.c (objc_set_method_opt): New function.
(objc_start_protocol, objc_finish_interface): Reset
objc_method_optional_flag flag.
(objc_add_method_declaration): Pass on the new
flag to objc_add_method.
(objc_add_method): Add optional methods to new chain in
the protocol class.
* objc/objc-act.h (CLASS_OPTIONAL_CLS_METHODS,
CLASS_OPTIONAL_NST_METHODS): New macros accessing a protocol
class's optional method chains.
 
2010-09-30 Nicola Pero <nicola.pero@meta-innovation.com>
 
Merge from 'apple/trunk' branch on FSF servers.
 
2005-10-04 Fariborz Jahanian <fjahanian@apple.com>
 
Radar 4278236
* objc-act.c (objc_declare_class): Pick the right
type tree.
 
2010-09-29 Nicola Pero <nicola.pero@meta-innovation.com>
 
Merge from 'apple/trunk' branch on FSF servers.
 
2005-10-04 Fariborz Jahanian <fjahanian@apple.com>
 
Radar 4281748
* objc-act.c (objc_check_global_decl): New
 
2010-09-29 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (objc_is_reserved_word): Removed.
 
2010-09-28 Iain Sandoe <iains@gcc.gnu.org>
 
* objc-act.c (objc_add_method_declaration): Handle and ignore
attributes.
(objc_start_method_definition): Likewise.
(objc_generate_cxx_ctor_or_dtor): Pass NULL attributes to ctor/dtor.
(objc_build_keyword_decl): Handle and ignore attributes.
 
2010-09-28 Richard Henderson <rth@redhat.com>
 
* objc-act.c (objc_eh_personality): Use targetm.except_unwind_info.
 
2010-09-28 Iain Sandoe <iains@gcc.gnu.org>
 
* objc-act.c (objc_start_class_interface): Handle and ignore attributes.
(objc_start_category_interface): Likewise.
(objc_start_protocol): Likewise.
 
2010-09-28 Nicola Pero <nicola.pero@meta-innovation.com>
 
Merge from 'apple/trunk' branch on FSF servers.
 
2005-08-23 Stuart Hastings <stuart@apple.com>
Ziemowit Laski <zlaski@apple.com>
 
Radar 4209854
* objc-act.c (objc_decay_parm_type): New function.
(get_arg_type_list): Decay types for all named arguments.
(objc_push_parm): Rebuild the PARM_DECL if its type has
been decayed.
 
2010-09-28 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (encode_type): Fixed encoding enums with the next
runtime.
 
2010-09-28 Nicola Pero <nicola.pero@meta-innovation.com>
 
Merge from 'apple/trunk' branch on FSF servers.
 
2005-07-18 Ziemowit Laski <zlaski@apple.com>
 
Radar 4175534
* objc-act.c (objc_compare_types): A new silent comparison
mode (-4), differing from regular comparison (-3) in that
'false' is returned instead of issuing warnings.
 
2010-09-28 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c (encode_type): Do not add 'r' with the next runtime.
(encode_aggregate_within): Reorganized code to be more readable.
(encode_aggregate_fields): Updated second argument to be 'bool'
instead of 'int'.
 
2010-09-27 Nicola Pero <nicola.pero@meta-innovation.com>
 
PR objc/45763
PR objc/25450
PR objc/25464
* objc-act.c: Improved comments for encoding functions.
(encode_aggregate_within): For the GNU runtime, rewritten some
obsfuscated code to clarify the various cases.
(encode_aggregate): Function removed.
(encode_array): Generate an error if asked to encode an incomplete
array as part of generating instance variables. Else, when
encoding an incomplete array inside a structure, encode it as an
array of zero size.
(encode_pointer): For the GNU runtime, fixed encoding 'BOOL *' as
'^c' instead of '*'.
(encode_gnu_bitfield): Encode enumerated types exactly in the same
type as integer types instead of using a hardcoded 'i'. If asked
to encode a non-integer type as a bitfield, do not abort
compilation immediately; instead generate an error, then skip the
type.
(encode_type): Use a 'switch' instead of a sequence of 'if's.
Added a 'default' clause that gets executed if the type can not be
matched, and that encodes it as '?' (unknown) and produces a
warning. For the GNU runtime, encode enumerated types exactly in
the same way as integer types instead of using a hardcoded 'i'.
Encode long double as 'D'. Encode 128-bit integers as 'T' or 't'.
Encode C++ reference types as pointers. Call encode_vector to
encode vectors.
(encode_vector): New function.
 
2010-09-27 Nicola Pero <nicola.pero@meta-innovation.com>
 
Merge from 'apple/trunk' branch on FSF servers. I modified the
changes to be used only when compiling for the NeXT runtime.
 
2005-10-10 Fariborz Jahanian <fjahanian@apple.com>
 
Radar 4301047
 
* objc-act.c (encode_type): Remove the hack.
 
2005-07-20 Ziemowit Laski <zlaski@apple.com>
 
Radar 4136935
* objc-act.c (pointee_is_readonly): New function.
(encode_pointer, encode_aggregate_within, encode_type):
Attempt to emulate GCC 3.3 when generating type encodings.
 
2010-09-27 Nicola Pero <nicola.pero@meta-innovation.com>
 
Merge from 'apple/trunk' branch on FSF servers.
 
2005-12-15 Fariborz Jahanian <fjahanian@apple.com>
 
Radar 4229905
* objc-act.c (objc_have_common_types): New function.
 
2005-06-22 Ziemowit Laski <zlaski@apple.com>
 
Radar 4154928
* objc-act.c (objc_common_type): New function.
 
2010-09-27 Richard Guenther <rguenther@suse.de>
 
* objc-act.c (objc_get_class_reference): Use CP_TYPE_CONTEXT.
(objc_is_global_reference_p): Use DECL_FILE_SCOPE_P.
 
2010-09-26 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc-act.c: Removed historical, obsolete comment at the top of
the file.
 
2010-09-21 Nicola Pero <nicola.pero@meta-innovation.com>
 
PR objc/23710
* objc-act.c (objc_start_method_definition): Do not abort upon a
'method definition not in @implementation context' error. Return
'false' instead.
 
2010-09-21 Nicola Pero <nicola.pero@meta-innovation.com>
 
PR objc/25965
* objc-act.c (objc_get_interface_ivars): New function.
(objc_collecting_ivars): New variable.
(continue_class): Set and reset objc_collecting_ivars for context.
 
2010-09-15 Nicola Pero <nicola.pero@meta-innovation.com>
 
Merge from 'apple/trunk' branch on FSF servers.
 
2006-03-09 Fariborz Jahanian <fjahanian@apple.com>
 
Radar 4457381
* objc/objc-act.c (objc_finish_message_expr): Look for message in
@class's protocol list.
 
2006-02-07 Fariborz Jahanian <fjahanian@apple.com>
 
Radar 4219590
* objc/objc-act.c (objc_start_method_definition): Initialize
break/continue labels.
 
2005-08-22 Ziemowit Laski <zlaski@apple.com>
 
Radar 4174166
* objc-act.c (objc_compare_types): Compare function
pointers; indicate success if the right-hand side has
a return type that is covariant, and the argument types
contravariant, with those of the left side.
 
2005-08-22 Ziemowit Laski <zlaski@apple.com>
 
Radar 4216500
* objc-act.c (objc_get_protocol_qualified_type): When looking
at a typedef, retrieve the precise type it describes (rather
than merely looking up a class by name).
 
2010-09-10 Nicola Pero <nicola.pero@meta-innovation.com>
 
* objc/objc-act.c (objc_begin_try_stmt): Generate an error if
-fobjc-exceptions was not used. (objc_build_throw_stmt): Same
change.
 
2010-07-15 Nathan Froyd <froydnj@codesourcery.com>
 
* objc-act.c: Carefully replace TREE_CHAIN with DECL_CHAIN.
 
2010-07-10 Iain Sandoe <iains@gcc.gnu.org>
 
PR objc/44140
* objc-act.c: build_objc_string_decl() remove declaration.
(finish_var_decl): Remove forcing of var output and marking
as "Used".
(init_def_list): Use integer_zero_node.
(init_objc_symtab): Use integer_zero_node, make the short
integer type specific on relevant nodes.
(generate_objc_symtab_decl): Remove call to
forward_declare_categories(). Use null_pointer_node where
appropriate.
(build_module_descriptor): Comment and mark this item as
DECL_PRESERVE_P.
(generate_static_references): Use gcc_unreachable instead of
abort ().
(diagnose_missing_method): New.
(build_next_selector_translation_table): New.
(build_gnu_selector_translation_table): New.
(add_objc_string): Merge code from build_objc_string_decl...
... and delete build_objc_string_decl().
(generate_dispatch_table): Make integer types explicit.
(generate_category): Pass implent and arrange for the data
to be extracted within the routine. Do not start new vars,
but finish the ones collcted during parsing.
(generate_shared_structures): Likewise.
(finish_objc): Reorder code so that we finish variables before
referencing them. Save the global data before calling meta-data
creation routines, and pass the current reference to the two
main routines. Only call generate_objc_image_info () for the
NeXT runtime.
(generate_classref_translation_entry): Comment on and make this
item DECL_PRESERVE_P.
(handle_class_ref): Use varpool interfaces, comment on and make
this item DECL_PRESERVE_P.
(handle_impent): Likewise.
(generate_objc_image_info): Only generate when the content is
non-zero. Make integer types explict.
 
2010-07-03 Nathan Froyd <froydnj@codesourcery.com>
 
PR objc/24867
* objc-act.c (build_sized_array_type): New function.
(add_objc_string): Use it.
(generate_protocol_list): Likewise.
(generate_objc_image_info): Likewise.
(add_field_decl): New function.
(objc_build_struct): Use a VEC rather than building a TREE_LIST.
(generate_struct_by_value_array): Use add_field_decl.
(build_objc_symtab_template): Likewise.
(build_module_descriptor): Likewise.
(build_objc_exception_stuff): Likewise.
(build_protocol_template): Likewise.
(build_method_prototype_list_template): Likewise.
(build_method_prototype_template): Likewise.
(build_category_template): Likewise.
(build_selector_template): Likewise.
(build_class_template): Likewise.
(build_super_template): Likewise.
(build_ivar_template): Likewise.
(build_ivar_list_template): Likewise.
(build_method_list_template): Likewise.
(build_method_template): Likewise.
 
2010-06-28 Steven Bosscher <steven@gcc.gnu.org>
 
* objc-act.c: Do not include except.h.
 
2010-06-08 Laurynas Biveinis <laurynas.biveinis@gmail.com>
 
* objc-act.h (ALLOC_OBJC_TYPE_LANG_SPECIFIC): Use typed GC
allocation.
 
* objc-act.c (objc_volatilize_decl): Likewise.
(objc_build_string_object): Likewise.
(hash_init): Likewise.
(hash_enter): Likewise.
(hash_add_attr): Likewise.
(add_class): Likewise.
(start_class): Likewise.
 
2010-06-05 Steven Bosscher <steven@gcc.gnu.org>
 
* objc-act.c: Update include path for moved files.
* objc-lang.c: Likewise.
* config-lang.in: Update paths in gtfiles for files in c-family/.
 
2010-06-01 Nathan Froyd <froydnj@codesourcery.com>
 
* objc-act.c (build_next_objc_exception_stuff): Give setjmp a
varargs type instead of a zero-argument type.
 
2010-05-30 Nathan Froyd <froydnj@codesourcery.com>
 
* objc-act.c (synth_module_prologue): Use build_function_type_list
instead of build_function_type.
(build_module_initializer_routine): Likewise.
(build_next_objc_exception_stuff): Likewise.
(build_objc_exception_stuff): Likewise.
 
2010-05-27 Joseph Myers <joseph@codesourcery.com>
 
* objc-act.c: Include diagnostic-core.h instead of diagnostic.h.
* Make-lang.in (objc/objc-act.o): Update dependencies.
 
2010-05-25 Steven Bosscher <steven@gcc.gnu.org>
 
* objc-act.h: Do not include gimple.h.
* objc-act.c: Do not include rtl.h, expr.h, libfuncs.h, and tm_p.h.
Include gimple.h. Explain why except.h has to be included.
* objc-lang.c: Do not include diagnostics.h.
* Make-lang.in: Update dependencies.
 
2010-05-25 Nathan Froyd <froydnj@codesourcery.com>
 
* objc-act.c (objc_build_constructor): Adjust OBJCPLUS impedance
mismatch code for VECs.
 
2010-05-25 Nathan Froyd <froydnj@codesourcery.com>
 
* objc-act.c (objc_build_constructor): Take a VEC instead of a tree.
Use build_constructor instead of build_constructor_from_list.
(objc_build_string_object): Build a VEC argument for
objc_build_constructor.
(init_def_list): Likewise.
(init_objc_symtab): Likewise.
(init_module_descriptor): Likewise.
(generate_static_references): Likewise.
(build_selector_translation_table): Likewise.
(build_descriptor_table_initializer): Likewise.
(generate_descriptor_table): Likewise.
(build_protocol_initializer): Likewise.
(build_ivar_list_initializer): Likewise.
(generate_ivars_list): Likewise.
(build_dispatch_table_initializer): Likewise.
(generate_dispatch_table): Likewise.
(generate_protocol_list): Likewise.
(build_category_initializer): Likewise.
(build_shared_structure_initializer): Likewise.
(generate_objc_image_info): Likewise.
 
2010-04-30 Iain Sandoe <iains@gcc.gnu.org>
 
PR objc++/32052
* objc-act.c (encode_aggregate_within): Encode structure tags
with template args for ObjC++.
 
2010-04-30 Steven Bosscher <steven@gcc.gnu.org>
 
* objc-act.c: Do not include varray.h.
 
2010-04-07 Jakub Jelinek <jakub@redhat.com>
 
PR c/18624
* objc-act.c (finish_var_decl, objc_begin_catch_clause,
really_start_method, get_super_receiver, handle_class_ref): Set
DECL_READ_P in addition to TREE_USED.
 
2010-04-07 Iain Sandoe <iains@gcc.gnu.org>
 
PR objc/35996
* objc-act.c (objc_init): Warn that -fobjc-gc is ignored for
-fgnu-runtime and set flag_objc_gc to zero.
 
2010-04-07 Iain Sandoe <iains@gcc.gnu.org>
 
PR objc++/23716
* objc-act.c (build_module_initializer_routine): Make the argument
to objc_start_function NULL_TREE when compiling ObjC++.
 
2010-02-18 Iain Sandoe <iain.sandoe@sandoe-acoustics.co.uk>
Mike Stump <mikestump@comcast.net>
 
PR objc/43061
* objc-act.c (finish_var_decl): Set the generated symbols as "used".
 
2009-12-17 Shujing Zhao <pearly.zhao@oracle.com>
 
* objc-act.c (objc_substitute_decl, build_ivar_reference,
get_super_receiver): Update build_indirect_ref calls.
 
2009-11-28 Jakub Jelinek <jakub@redhat.com>
 
* objc-act.c (generate_shared_structures): Remove unused sc_spec and
decl_specs variables.
(objc_build_message_expr): Remove unused loc variable.
(objc_finish_message_expr): Remove unused saved_rtype variable.
(encode_field_decl): Remove unused type variable.
 
PR obj-c++/42156
* objc-act.c (objc_build_struct): INIT_TYPE_OBJC_INFO for
type variants that don't have it initialized yet.
 
2009-09-14 Jan Hubicka <jh@suse.cz>
 
* objc-act.c (objc_add_static_instance): Do not set DECL_COMMON.
 
2009-09-14 Richard Henderson <rth@redhat.com>
 
* objc-act.c (objc_init_exceptions): Don't call
default_init_unwind_resume_libfunc.
(objc_build_exc_ptr): Use __builtin_eh_pointer.
 
2009-09-13 Richard Guenther <rguenther@suse.de>
Rafael Avila de Espindola <espindola@google.com>
 
* objc-act.c (objc_eh_runtime_type): Export.
(objc_init_exceptions): Remove. Move warning code ...
(objc_begin_try_stmt): ... here
(objc_build_throw_stmt): ... and here.
(objc_eh_personality_decl): New.
(objc_eh_personality): New function.
* objc-act.h (objc_eh_runtime_type): Declare.
(objc_eh_personality): Likewise.
* objc-lang.c (LANG_HOOKS_EH_RUNTIME_TYPE): Define.
(LANG_HOOKS_EH_PERSONALITY): Likewise.
 
2009-09-03 Diego Novillo <dnovillo@google.com>
 
* objc-lang.c (lang_hooks): Remove const qualifier.
 
2009-08-20 Richard Guenther <rguenther@suse.de>
 
* objc-act.c: Include c-lang.h
* Make-lang.in (objc/objc-act.o): Add c-lang.h dependency.
 
2009-07-17 Aldy Hernandez <aldyh@redhat.com>
Manuel López-Ibáñez <manu@gcc.gnu.org>
 
PR 40435
* objc-act.c: Add location argument to all calls to
build_fold_addr_expr.
 
2009-07-14 Taras Glek <tglek@mozilla.com>
Rafael Espindola <espindola@google.com>
 
* Make-lang.in (objc.install-plugin): New target for
installing plugin headers.
 
2009-07-07 Manuel López-Ibáñez <manu@gcc.gnu.org>
 
* objc-act.c (next_sjlj_build_catch_list): Replace EXPR_LOCUS by
EXPR_LOCATION.
 
2009-07-07 Manuel López-Ibáñez <manu@gcc.gnu.org>
 
* objc-act.c: Replace %J by an explicit location. Update all
calls.
 
2009-07-07 Manuel López-Ibáñez <manu@gcc.gnu.org>
 
* objc-act.c: Replace %H by an explicit location. Update all
calls.
 
2009-06-22 Steven Bosscher <steven@gcc.gnu.org>
 
PR objc/28050
* objc-act.c (objc_build_message_args): Return if ARGS is the
error_mark_node.
 
2009-06-19 Ian Lance Taylor <iant@google.com>
 
* objc-act.c (objc_in_struct, objc_struct_types): Remove.
(objc_struct_info): New static variable.
(objc_start_struct): Pass &objc_struct_info, not &objc_in_struct
and &objc_struct_types, to start_struct.
(objc_finish_struct): Likewise for finish_struct.
 
2009-06-15 Ian Lance Taylor <iant@google.com>
 
* objc-act.c (objc_start_function): Don't set
label_context_stack_se or label_context_stack_vm.
 
2009-06-12 Aldy Hernandez <aldyh@redhat.com>
 
* objc-act.c (finish_var_decl): Pass location to finish_decl.
(objc_get_parm_info): Same.
(get_super_receiver): Same.
* objc-act.c (objc_build_component_ref): Pass location to
build_compound_ref.
(build_module_initializer_routine): Pass location to
c_end_compound_stmt.
(objc_generate_static_init_call): Pass location to build_stmt.
(build_typed_selector_reference): New location argument.
(build_selector_reference): Same.
(objc_substitute_decl): Pass location to build_array_ref.
(next_sjlj_build_try_catch_finally): Pass location to build_stmt.
(objc_begin_catch_clause): Same.
(objc_finish_try_stmt): Same.
(objc_finish_catch_clause): Pass location to c_end_compound_stmt.
(objc_build_throw_stmt): New argument.
(generate_shared_structures): Pass location to build_c_cast.
(objc_build_message_expr): Use local location.
(objc_finish_message_expr): Use input_location.
(build_objc_method_call): New argument.
(objc_build_selector_expr): Same.
(get_super_receiver): Pass location to build_c_cast,
build_modify_expr, build_compound_expr.
* objc-act.c: Add location to all calls to start_struct, build_decl,
finish_struct.
 
2009-06-09 Ian Lance Taylor <iant@google.com>
 
* objc-act.c (objc_gimplify_expr): Change return type to int.
* objc-act.h: Update declaration.
 
2009-06-08 Alexandre Oliva <aoliva@redhat.com>
 
* objc-act.c (objc_init): Skip print_struct_values during
-fcompare-debug-second.
 
2009-06-03 Ian Lance Taylor <iant@google.com>
 
* Make-lang.in (cc1obj-checksum.o): Depend upon $(CONFIG_H) and
$(SYSTEM_H).
 
2009-05-27 Ian Lance Taylor <iant@google.com>
 
* Make-lang.in (cc1obj-dummy$(exeext)): Change $(COMPILER) to
$(LINKER).
(cc1obj$(exeext)): Likewise.
 
2009-05-26 Ian Lance Taylor <iant@google.com>
 
* Make-lang.in (cc1obj-dummy$(exeext)): Use $(COMPILER).
(cc1obj$(exeext)): Likewise.
 
2009-05-20 Ian Lance Taylor <iant@google.com>
 
* objc-act.c (objc_generate_cxx_ctor_or_dtor): Pass NULL rather
than NULL_TREE to build_special_member_call.
 
2009-05-10 Ian Lance Taylor <iant@google.com>
 
* objc-act.c (objc_building_struct): New static variable.
(objc_in_struct, objc_struct_types): New static variables.
(objc_start_struct, objc_finish_struct): New static functions.
(generate_struct_by_value_array): Call objc_start_struct instead
of start_struct, and call objc_finish_struct instead of
finish_struct.
(objc_build_struct, build_objc_symtab_template): Likewise.
(build_module_descriptor): Likewise.
(build_next_objc_exception_stuff): Likewise.
(build_protocol_template): Likewise.
(build_method_prototype_list_template): Likewise.
(build_method_prototype_template): Likewise.
(build_category_template, build_selector_template): Likewise.
(build_class_template, build_super_template): Likewise.
(build_ivar_template, build_ivar_list_template): Likewise.
(build_method_list_template): Likewise.
(build_method_template): Likewise.
 
2009-05-10 Joseph Myers <joseph@codesourcery.com>
 
* objc-act.c: Include intl.h.
(objc_lookup_protocol): Use complete sentences for diagnostics
with %qE for identifiers and translating results of
gen_type_name_0 to locale character set.
(objc_check_decl, check_protocol_recursively,
lookup_and_install_protocols, objc_build_string_object,
objc_get_class_reference, objc_declare_alias, objc_declare_class,
objc_get_class_ivars, error_with_ivar, check_duplicates,
objc_finish_message_expr, objc_build_protocol_expr,
objc_build_selector_expr, build_ivar_reference, objc_add_method,
add_category, add_instance_variable, objc_is_public,
check_methods, check_methods_accessible, check_protocol,
start_class, finish_class, start_protocol, really_start_method,
get_super_receiver, objc_lookup_ivar): Use %E and %qE for
identifiers in diagnostics. Translate generated text to locale
character set as needed.
(check_protocol, check_protocols): Change name parameter to type
tree.
(lang_report_error_function): Remove.
 
2009-04-27 Ian Lance Taylor <iant@google.com>
 
* objc-act.c (objc_gimplify_expr): Add casts to enum type.
 
2009-04-24 Ian Lance Taylor <iant@google.com>
 
* objc-act.c (get_super_receiver): Update calls to
build_modify_expr to pass new argument.
 
2009-04-21 Taras Glek <tglek@mozilla.com>
 
* objc-act.c: Update GTY annotations to new syntax
* objc-act.h: Likewise
 
2009-04-21 Joseph Myers <joseph@codesourcery.com>
 
* ChangeLog: Add copyright and license notices.
 
2009-04-20 Ian Lance Taylor <iant@google.com>
 
* objc-act.c (objc_rewrite_function_call): Change parameter from
params to first_param. Change all callers.
 
2009-03-30 Dominique d'Humieres <dominiq@lps.ens.fr>
 
PR bootstrap/39583
* objc-act.c (in_late_binary_op): Define for Objective-C++.
 
2009-03-29 Joseph Myers <joseph@codesourcery.com>
 
PR c/456
PR c/5675
PR c/19976
PR c/29116
PR c/31871
PR c/35198
* objc-act.c (objc_finish_try_stmt): Set in_late_binary_op.
 
2008-12-05 Sebastian Pop <sebastian.pop@amd.com>
 
PR bootstrap/38262
* Make-lang.in (cc1obj-dummy, cc1obj): Add BACKENDLIBS,
remove GMPLIBS.
 
2008-10-06 Aldy Hernandez <aldyh@redhat.com>
 
* objc-act.c (objc_build_string_object): Pass location to
build_unary_op.
(init_def_list): Same.
(init_objc_symtab): Same.
(init_module_descriptor): Same.
(build_module_initializer_routine): Same.
(generate_static_references): Same.
(build_typed_selector_reference): Same.
(add_objc_string): Same.
(objc_substitute_decl): Same.
(objc_build_ivar_assignment): Same.
(objc_build_global_assignment): Same.
(objc_build_strong_cast_assignment): Same.
(generate_protocols): Same.
(build_protocol_initializer): Same.
(build_dispatch_table_initializer): Same.
(generate_protocol_list): Same.
(build_category_initializer): Same.
(build_shared_structure_initializer): Same.
(generate_shared_structures): Same.
(objc_build_protocol_expr): Same.
(build_ivar_reference): Same.
(get_super_receiver): Same.
 
2008-09-23 Aldy Hernandez <aldyh@redhat.com>
 
* objc-act.c (next_sjlj_build_enter_and_setjmp): Call
c_common_truthvalue_conversion with location.
(next_sjlj_build_catch_list): Same.
(next_sjlj_build_try_catch_finally): Same.
 
2008-09-17 Andrew Pinski <andrew_pinski@playstation.sony.com>
 
PR objc/37460
* objc-lang.c (LANG_HOOKS_GET_CALLEE_FNDECL): Don't define.
* objc-act.h (objc_get_callee_fndecl): Remove prototype.
* objc-act.c (objc_get_callee_fndecl): Kill.
 
2008-09-17 Jan Hubicka <jh@suse.cz>
 
PR c++/18071
* objc/objc-act.c (objc_finish_method_definition): Do not set
DECL_INLINE.
 
2008-09-01 Aldy Hernandez <aldyh@redhat.com>
 
* objc-act.c (build_typed_selector_reference): Pass input_location to
build_unary_op calls.
(build_selector_reference): Same, but to build_array_ref.
(objc_substitute_decl): Same.
(build_ivar_reference): Same, but to build_indirect_ref.
(get_super_receiver): Same.
 
2008-07-28 Richard Guenther <rguenther@suse.de>
 
Merge from gimple-tuples-branch.
 
2008-07-18 Aldy Hernandez <aldyh@redhat.com>
 
* Make-lang.in (objc-lang.o): Depend on GIMPLE_H.
(objc-act.o): Rename TREE_GIMPLE_H to GIMPLE_H.
* objc-act.h: Include gimple.h instead of tree-gimple.h.
* ipa-reference.c: Same.
 
2007-11-10 Aldy Hernandez <aldyh@redhat.com>
 
* objc-act.c (objc_gimplify_expr): Change pre and post to sequences.
* objc-act.h (objc_gimplify_expr): Change prototype accordingly.
 
2008-07-21 Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
 
* objc-act.c: Fix comment typos.
 
2008-07-18 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
 
* objc-act.c (objc_start_class_interface,
objc_start_category_interface, objc_start_class_implementation,
objc_start_category_implementation, objc_build_struct,
generate_static_references, build_private_template,
lookup_category, objc_add_method, add_category,
add_instance_variable, objc_is_public, conforms_to_protocol,
start_class, continue_class, finish_class): Avoid C++ keywords.
 
2008-07-14 Jason Merrill <jason@redhat.com>
 
PR objc++/36723
* objc-act.c (objc_build_constructor): Update C++ tweak.
 
2007-07-14 Rafael Ávila de Espíndola <espindola@google.com>
 
* objc-act.c (synth_module_prologue): Use TREE_NO_WARNING instead
of DECL_IN_SYSTEM_HEADER.
 
2008-07-11 Ian Lance Taylor <iant@google.com>
 
* objc-act.c (objc_is_reserved_word): Always check for RID_CLASS,
etc., not just when OBJCPLUS is defined.
 
2008-06-19 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
 
* objc-act.c (setup_string_decl, objc_build_string_object,
hash_interface, eq_interface, objc_begin_try_stmt,
encode_method_prototype, build_ivar_list_initializer,
objc_build_encode_expr): Fix for -Wc++-compat.
 
2008-05-12 Tomas Bily <tbily@suse.cz>
 
* objc-act.c (objc_generate_write_barrier, objc_finish_message_expr):
Use CONVERT_EXPR_P.
 
2008-04-23 Paolo Bonzini <bonzini@gnu.org>
 
* objc-act.c (objc_build_string_object): Don't set TREE_INVARIANT.
 
2008-04-03 Tom Tromey <tromey@redhat.com>
 
* Make-lang.in (objc_OBJS): New variable.
 
2008-03-27 Tom Tromey <tromey@redhat.com>
 
* Make-lang.in: Revert automatic dependency patch.
 
2008-03-27 Douglas Gregor <doug.gregor@gmail.com>
 
PR obj-c++/35704
* objc-act.c (objc_build_component_ref): Fix call to
finish_class_member_access_expr.
(objc_generate_cxx_ctor_or_dtor): Fix call to
build_special_member_call.
 
2008-03-25 Andrew Pinski <pinskia@gmail.com>
 
PR objc/29197
* objc-act.c (encode_type): Handle when type is error_mark_node.
(objc_push_parm): Handle when the type of parm is error_mark_node.
 
2008-03-25 Tom Tromey <tromey@redhat.com>
 
* Make-lang.in (objc_OBJS): New variable.
(cc1obj-checksum.o, objc/objc-lang.o, objc/objc-act.o): Remove.
 
2008-03-21 Andreas Tobler <a.tobler@schweiz.org>
 
PR bootstrap/35660
* objc-act.c (objc_generate_cxx_ctor_or_dtor): Rename IS_AGGR_TYPE to
MAYBE_CLASS_TYPE_P.
(objc_generate_cxx_cdtors): Likewise.
(add_instance_variable): Likewise.
 
2008-02-26 Tom Tromey <tromey@redhat.com>
 
* objc-act.c (objc_init): Remove old location code.
 
2008-02-06 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
 
PR other/35107
* Make-lang.in (cc1obj-dummy, cc1obj): Add $(GMPLIBS).
 
2007-07-30 Nick Clifton <nickc@redhat.com>
 
* Make-lang.in: Change copyright header to refer to version 3 of
the GNU General Public License and to point readers at the
COPYING3 file and the FSF's license web page.
* lang-specs.h, objc-act.c, objc-tree.def, objc-act.h,
config-lang.in, objc-lang.c: Likewise.
 
2007-07-29 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
 
* objc-act.c (objc_get_callee_fndecl): Constify.
* objc-act.h (objc_get_callee_fndecl): Likewise.
 
2007-07-25 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
 
* objc-act.c (volatilized_hash, volatilized_eq, string_hash,
string_eq): Constify.
 
2007-04-04 Stuart Hastings <stuart@apple.com>
 
PR 31281
* objc/objc-act.c (next_sjlj_build_catch_list): Delete volatile from rethrow decl.
 
2007-03-01 Brooks Moses <brooks.moses@codesourcery.com>
 
* Make-lang.in: Add dummy lang.install-pdf target.
 
2007-02-18 Kazu Hirata <kazu@codesourcery.com>
 
* objc/objc-act.c: Fix comment typos.
 
2007-02-15 Sandra Loosemore <sandra@codesourcery.com>
Brooks Moses <brooks.moses@codesourcery.com>
Lee Millward <lee.millward@codesourcery.com>
 
* objc-act.c (receiver_is_class_object): Use new CALL_EXPR accessors.
(objc_get_callee_fndecl): Likewise.
 
2007-01-23 Andrew Pinski <pinskia@gmail.com>
 
PR objc/27438
* objc-act.c (objc_add_static_instance): Mark the decl as
TREE_USED.
 
2007-01-20 Andrew Pinski <pinskia@gmail.com>
 
PR objc/30479
* objc-act.c (hash_interface): Use IDENTIFIER_HASH_VALUE instead
of htab_hash_pointer.
(lookup_interface): Likewise.
(add_class): Likewise.
 
2007-01-02 Douglas Gregor <doug.gregor@gmail.com>
 
* objc-act.c (objc_build_volatilized_type): Keep track of
canonical types.
(objc_get_protocol_qualified_type): Ditto.
 
2006-11-02 Andreas Tobler <a.tobler@schweiz.org>
 
* objc-act.c (objc_finish_file): Remove ifdef clause for OBJCPLUS and
content where we called cp_finish_file.
 
2006-10-23 Rafael Ávila de Espíndola <rafael.espindola@gmail.com>
 
* objc-act.c (synth_module_prologue): Replace calls to
builtin_function with add_builtin_function.
(build_next_objc_exception_stuff): Replace calls to
builtin_function with add_builtin_function.
(build_objc_exception_stuff): Replace calls to
builtin_function with add_builtin_function.
 
2006-10-10 Brooks Moses <bmoses@stanford.edu>
 
* Make-lang.in: Added empty "objc.pdf" target.
 
2006-09-26 Andrew Pinski <pinskia@physics.uc.edu>
 
PR objc/29195
* objc-act.c (objc_push_parm): If we change the type of the
decl, relayout the decl.
 
2006-09-19 Eric Christopher <echristo@apple.com>
 
* objc-act.c (JBLEN): Rename to OBJC_JBLEN,
default to something innocuous.
(build_next_objc_exception_stuff): Rename JBLEN.
 
2006-07-28 Volker Reichelt <reichelt@igpm.rwth-aachen.de>
 
* Make-lang.in: Use $(HEADER_H) instead of header.h in dependencies.
 
2006-07-19 Volker Reichelt <reichelt@igpm.rwth-aachen.de>
 
PR obj-c++/28434
* objc-act.c (lookup_and_install_protocols): Skip error_mark_nodes.
 
2006-06-06 Mike Stump <mrs@apple.com>
 
* objc-act.c: Remove prototype for objc_build_volatilized_type.
 
2006-05-24 Mike Stump <mrs@apple.com>
 
* objc-act.c (build_next_objc_exception_stuff): Use JBLEN instead of _JBLEN.
 
2006-05-05 Volker Reichelt <reichelt@igpm.rwth-aachen.de>
 
PR objc/27240
* objc-act.c (objc_is_public): Return early on invalid type.
 
2006-03-02 Fariborz Jahanian <fjahanian@apple.com>
 
* objc-act.c (init_module_descriptor): Remove file name from
module descriptor.
(gen_type_name_0): Fix ICE when issuing warning.
 
2006-02-20 Rafael Ávila de Espíndola <rafael.espindola@gmail.com>
* Make-lang.in (OBJC): Remove
(OBJECTIVE-C): Remove
(objective-c): Remove
(.PHONY): Remove objective-c and ObjC
 
2005-12-14 Andrew Pinski <pinskia@physics.uc.edu>
 
PR objc/25360
* objc/objc-act.c (encode_type): Encode Complex types as 'j' followed
by the inner type.
 
2005-12-12 Andrew Pinski <pinskia@physics.uc.edu>
 
PR objc/25348
* objc-act.c (encode_array): Handle arrays to zero sized types.
 
2005-12-07 Rafael Ávila de Espíndola <rafael.espindola@gmail.com>
 
* Make-lang.in (objc.all.build, objc.install-normal): Remove.
 
2005-12-07 Rafael Ávila de Espíndola <rafael.espindola@gmail.com>
 
* Make-lang.in: Remove all dependencies on s-gtype.
 
2005-12-02 Richard Guenther <rguenther@suse.de>
 
* objc-act.c (objc_build_exc_ptr, next_sjlj_build_enter_and_setjmp
next_sjlj_build_exc_extract, next_sjlj_build_catch_list,
next_sjlj_build_try_catch_finally, objc_begin_catch_clause,
build_objc_method_call, objc_rewrite_function_call): Use buildN
instead of build.
 
2005-10-20 Geoffrey Keating <geoffk@apple.com>
 
* objc-act.c (synth_module_prologue): Clear TREE_NOTHROW
on objc_msgSend and like builtin functions.
 
2005-10-17 Andreas Krebbel <krebbel1@de.ibm.com>
 
* objc-act.c (objc_build_component_ref): Adjust call to
finish_class_member_access_expr due to a changed prototype.
 
2005-08-31 Andrew Pinski <pinskia@physics.uc.edu>
 
PR objc/23306
* objc-act.c (generate_strings): Remove and move code to
finish decl to ...
(add_objc_string): here when creating a new string decl.
(finish_objc): Don't call generate_strings.
 
2005-08-31 Andrew Pinski <pinskia@physics.uc.edu>
 
PR objc/23381
* objc-act.c (next_sjlj_build_try_catch_finally): Set
TREE_SIDE_EFFECTS on catch_seq after building it.
 
2005-08-09 Andrew Pinski <pinskia@physics.uc.edu>
 
part of PR objc/21992
* objc-act.c (handle_class_ref): The ref decl is always referenced.
 
2005-07-20 Giovanni Bajo <giovannibajo@libero.it>
 
Make CONSTRUCTOR use VEC to store initializers.
* objc-act.c (objc_build_constructor): Use build_constructor_from_list
instead of build_constructor.
 
2005-07-08 Daniel Berlin <dberlin@dberlin.org>
 
* objc-act.c (objc_push_parm): DECL_ARG_TYPE_AS_WRITTEN is
removed.
* objc-act.h (KEYWORD_ARG_NAME): Use decl_non_common.
(KEYWORD_KEY_NAME): Use decl_minimal.
(METHOD_SEL_NAME): Ditto..
(METHOD_SEL_ARGS): Use decl_non_common.
(METHOD_ADD_ARGS): Ditto.
(METHOD_ADD_ARGS_ELLIPSIS_P): Use decl_common.
(METHOD_DEFINITION): Ditto.
(METHOD_ENCODING): Ditto.
* objc-lang.c: (objc_init_ts): New function.
 
2005-07-07 Ziemowit Laski <zlaski@apple.com>
 
* objc-act.c (objc_build_struct): Pass in an actual @interface
instead of its name, and annotate the struct created (and all
existing variants thereof) with the @interface.
(objc_compare_types): Treat forward-declared ObjC classes
as stand-alone (root) classes for purposes of type comparisons.
(build_private_template): Move some code to objc_build_struct().
 
2005-07-07 Ziemowit Laski <zlaski@apple.com>
 
PR objc/22274
* objc-act.c (objc_build_string_object): For GNU-style constants,
use the @interface type rather than the built-in type.
 
2005-07-03 Kazu Hirata <kazu@codesourcery.com>
 
* Make-lang.in (cc1plus-checksum.c): Use
build/genchecksum$(build_exeext), not build/genchecksum$(exeext).
 
2005-07-02 Joseph S. Myers <joseph@codesourcery.com>
 
* objc-act.c: Use %q to quote in diagnostics.
 
2005-07-02 Joseph S. Myers <joseph@codesourcery.com>
 
* objc-act.c: Use '+' flag instead of %J. Use 'q' flag for
quoting.
 
2005-06-30 Ziemowit Laski <zlaski@apple.com>
 
* objc-act.c (objc_build_volatilized_type): New function.
(objc_volatilize_decl): Call objc_build_volatilized_type()
instead of build_qualified_type().
 
2005-06-29 Ziemowit Laski <zlaski@apple.com>
 
* objc-act.c (objc_build_internal_const_str_type): New function.
(check_string_class_template): Use objc_get_class_ivars() instead
of TYPE_FIELDS() to retrieve ivar list.
(AT_LEAST_AS_LARGE_AS): Check the size of each field's type rather
than the field itself.
(objc_build_string_object): Synthesize a "__builtin_ObjCString"
type and use it to lay out compile-time string objects.
* objc-act.h (OCTI_INTERNAL_CNST_STR_TYPE, internal_const_str_type):
New.
 
2005-06-28 Paul Brook <paul@codesourcery.com>
 
* objc-act.c (objc_init_exceptions): Call
default_init_unwind_resume_libfunc.
 
2005-06-27 Ziemowit Laski <zlaski@apple.com>
 
* objc-act.c (objc_build_struct): Save the TYPE_OBJC_INFO
portion of TYPE_LANG_SPECIFIC info for all variants of
a class before calling finish_struct(), and restore
same TYPE_OBJC_INFO afterwards.
 
2005-06-25 Kelley Cook <kcook@gcc.gnu.org>
 
* all files: Update FSF address in copyright headers.
 
2005-06-15 Joseph S. Myers <joseph@codesourcery.com>
 
* objc-act.c (my_build_string_pointer): New.
(objc_get_class_reference, get_super_receiver): Call
my_build_string_pointer instead of my_build_string when building
function arguments.
 
2005-05-25 Mike Stump <mrs@mrs.kithrup.com>
 
* objc-act.c (volatilized_hash): Avoid warnings on 64-bit
machines.
 
2005-05-24 Ziemowit Laski <zlaski@apple.com>
 
* objc-act.c (objc_build_struct): New function.
(objc_derived_from_p): Likewise.
(objc_build_component_ref): Likewise.
(objc_copy_binfo): Likewise.
(objc_xref_basetypes): Likewise.
(objc_lookup_protocol): Likewise.
(objc_compare_protocols): Likewise.
(objc_volatilize_decl): Likewise.
(encode_aggregate_fields): Likewise.
(volatilized_hash): Likewise.
(volatilized_eq): Likewise.
(objc_compare_types): Likewise.
(objc_type_quals_match): Likewise.
(DERIVED_FROM_P): New ObjC macro, corresponding to C++ macro
of same name.
(get_class_ivars): Add second parameter indicating if entire
hierarchy is desired.
(struct volatilized_type): New type.
(volatilized_htab): New hash table.
(objc_types_compatible_p, objc_comptypes): Remove functions.
(synth_module_prologue): Do not initialize 'unused_list'.
(objc_get_class_reference): Fix ObjC++ impedance mismatches.
(objc_declare_alias): Implement as a typedef.
(objc_substitute_decl, objc_gimplify_expr): Reformat.
(objc_get_class_ivars): Adjust call to get_class_ivars().
(next_sjlj_build_enter_and_setjmp, synth_forward_declarations,
build_ivar_reference, get_super_receiver): Call
objc_build_component_ref() instead of build_component_ref().
(objc_begin_catch_clause): Use DERIVED_FROM_P() instead of
objc_comptypes().
(build_private_template): Call objc_build_struct() instead of
start_struct() and finish_struct().
(hash_init): Initialize volatilized_htab.
(objc_is_public): Adjust calls to objc_get_ivars(); adjust
ObjC++ impedance mismatches.
(encode_aggregate_within): Streamline by calling
encode_aggregate_fields().
* objc-act.h (objc_types_compatible_p): Remove prototype.
(OCTI_UNUSED_LIST, unused_list): Remove slot.
* objc-lang.c (LANG_HOOKS_TYPES_COMPATIBLE_P): Remove.
 
2005-05-18 Geoffrey Keating <geoffk@apple.com>
 
* Make-lang.in (cc1obj-dummy): New.
(cc1obj-checksum.c): New.
(cc1obj-checksum.o): New.
(cc1obj): Add cc1obj-checksum.o.
 
2005-05-18 Mike Stump <mrs@apple.com>
 
PR objc/21641
* objc-act.c (struct interface_tuple): Mark it up for GC.
(interface_htab): It is really a struct interface_tuple.
 
2005-05-17 Ziemowit Laski <zlaski@apple.com>
Mike Stump <mrs@apple.com>
 
Yet more Objective-C++...
 
* objc-act.c (objc_finish_try_stmt): Add return value.
(objc_build_synchronized): Likewise.
 
* objc-act.c (objc_is_gcable_type): Add.
(objc_substitute_decl): Add.
(objc_build_ivar_assignment): Add.
(objc_build_global_assignment): Add.
(objc_build_strong_cast_assignment): Add.
(objc_is_ivar_reference_p): Add.
(objc_is_global_reference_p): Add.
(objc_generate_write_barrier): Add.
(objc_rewrite_function_call): Add.
(objc_gimplify_expr): Add Objective-C++ support.
* objc-act.h (ALLOC_OBJC_TYPE_LANG_SPECIFIC): Likewise.
(SIZEOF_OBJC_TYPE_LANG_SPECIFIC): Add.
(INIT_TYPE_OBJC_INFO): Add Objective-C++ support.
(DUP_TYPE_OBJC_INFO): Likewise.
(struct imp_entry): Add field has_cxx_cdtors.
(struct imp_entry *imp_list): Add OCTI_UMSG_FAST_DECL,
OCTI_METH_LIST_TEMPL, OCTI_METH_PROTO_LIST_TEMPL,
OCTI_IVAR_LIST_TEMPL, OCTI_ASSIGN_IVAR_DECL,
OCTI_ASSIGN_IVAR_FAST_DECL, OCTI_ASSIGN_GLOBAL_DECL,
OCTI_ASSIGN_STRONGCAST_DECL.
(umsg_fast_decl): Add.
(objc_assign_ivar_decl): Add.
(objc_assign_ivar_fast_decl): Add.
(objc_assign_global_decl): Add.
(objc_assign_strong_cast_decl): Add.
(objc_method_list_ptr): Add.
(objc_method_proto_list_ptr): Add.
(objc_ivar_list_ptr): Add.
 
* objc-act.c (should_call_super_dealloc): Add.
(OBJC_VERSION): Bump to 6.
(objc_is_gcable_type): Add.
(objc_substitute_decl): Add.
(objc_build_ivar_assignment): Add.
(objc_build_global_assignment): Add.
(objc_build_strong_cast_assignment): Add.
(objc_is_gcable_p): Add.
(objc_is_ivar_reference_p): Add.
(objc_is_global_reference_p): Add.
(generate_shared_structures): Add flags parameter.
(objc_generate_cxx_ctor_or_dtor): Add.
(objc_generate_cxx_cdtors): Add.
(add_class): Add name parameter.
(objc_types_share_size_and_alignment): Add.
(comp_proto_with_proto): Add strict parameter.
(CLS_HAS_CXX_STRUCTORS): Add.
(TAG_ASSIGNIVAR): Add.
(TAG_ASSIGNGLOBAL): Add.
(TAG_ASSIGNSTRONGCAST): Add.
(TAG_MSGSEND_FAST): Add.
(TAG_ASSIGNIVAR_FAST): Add.
(TAG_CXX_CONSTRUCT): Add.
(TAG_CXX_DESTRUCT): Add.
(OBJC_LOOKUP_CLASS): Add.
(OBJC_LOOKUP_NO_SUPER): Add.
(objc_finish_file): Add pch support.
(objc_finish_implementation): Add Objective-C++ support.
(synth_module_prologue): Likewise.
(synth_module_prologue): Add fast dispatching.
(objc_get_class_reference): Add Objective-C++ support.
(objc_generate_write_barrier): Likewise.
(next_sjlj_build_enter_and_setjmp): Likewise.
(objc_begin_try_stmt): Likewise.
(build_next_objc_exception_stuff): Add fast ivar support.
(build_private_template): Mark the record as used so debug
information is generated.
(build_protocol_template): Add Objective-C++ support.
(objc_method_parm_type) Likewise.
(objc_generate_cxx_ctor_or_dtor): Likewise.
(objc_generate_cxx_cdtors): Likewise.
(build_protocol_initializer): Likewise.
(build_category_template): Likewise.
(build_class_template): Likewise.
(build_method_list_template): Likewise.
(build_category_initializer): Likewise.
(build_shared_structure_initializer): Likewise.
(objc_finish_message_expr): Likewise.
(build_objc_method_call): Add fast dispatch support.
(lookup_method_static): Add support to end search at superclasses.
(add_method_to_hash_list): Add strict parameter to
comp_proto_with_proto.
(objc_add_method): Likewise.
(objc_add_method): Also set the interface_value.
(add_instance_variable): Add Objective-C++ support.
(objc_is_public): Likewise.
(start_class): Likewise.
(continue_class): Likewise.
(encode_aggregate_within): Likewise.
(start_method_def): Likewise.
(objc_start_function): Clear current_function_returns_value
and current_function_returns_null.
(really_start_method): Add Objective-C++ support.
(objc_finish_method_definition): Add warning for missing
[super dealloc].
(finish_objc): Add Objective-C++ support.
(generate_objc_image_info): Likewise.
(objc_lookup_ivar): Likewise.
* objc-act.h (TYPE_HAS_OBJC_INFO): Likewise.
(INIT_TYPE_OBJC_INFO): Likewise.
(DUP_TYPE_OBJC_INFO): Likewise.
 
2005-04-23 DJ Delorie <dj@redhat.com>
 
* objc-act.c: Adjust warning() callers.
 
2005-04-21 Roger Sayle <roger@eyesopen.com>
 
* objc-act.h (METHOD_ADD_ARGS_ELLIPSIS_P): New macro for accessing
this field of an objc method decl.
* objc-act.c (build_method_decl): Take an additional "ellipsis"
argument, and set METHOD_ADD_ARGS_ELLIPSIS_P as appropriate.
(objc_build_method_signature): Accept additional "ellipsis"
argument and pass it to build_method_decl.
(get_arg_type_list, start_method_def, gen_method_decl): Use
the new METHOD_ADD_ARGS_ELLIPSIS_P instead of examining the
TREE_OVERFLOW field of a TREE_LIST node.
 
2005-04-20 Joseph S. Myers <joseph@codesourcery.com>
 
PR c/12913
* objc-act.c (objc_start_function): Create stack level for context
of identifiers with variably modified type.
 
2005-03-30 Joseph S. Myers <joseph@codesourcery.com>
 
PR c/772
PR c/17913
* objc-act.c (objc_start_function): Push context on
label_context_stack.
 
2005-03-23 Joseph S. Myers <joseph@codesourcery.com>
 
* objc-act.c (next_sjlj_build_enter_and_setjmp,
next_sjlj_build_catch_list, next_sjlj_build_try_catch_finally):
Call c_common_truthvalue_conversion.
 
2005-02-25 Joseph S. Myers <joseph@codesourcery.com>
 
* Make-lang.in (objc/objc-parse.o-warn, objc/objc-parse.o,
objc/objc-parse.c, objc/objc-parse.y): Remove
(OBJC_OBJS, objc.srcextra, objc.tags, objc.mostlyclean,
objc.distclean, objc.maintainer-clean): Update for new parser.
* config-lang.in (gtfiles): Update for new parser.
 
2005-01-29 Kazu Hirata <kazu@cs.umass.edu>
 
* lang-specs.h, objc-act.c, objc-act.h, objc-lang.c: Update
copyright.
 
2005-01-27 Matt Austern <austern@apple.com>
 
* objc-act.c (objc_finish_file): In ObjC++ mode, set at_eof before
calling instantiate_pending_templates.
 
2005-01-26 Alexander Malmberg <alexander@malmberg.org>
 
PR objc/18862
* objc-act.c (build_selector_translation_table): Use
input_location in the diagnostic for the GNU runtime or if
TREE_PURPOSE (chain) is NULL.
 
2005-01-25 Alexander Malmberg <alexander@malmberg.org>
 
PR objc/18408
* objc-act.c (objc_types_compatible_p): New function.
* objc-act.h (objc_types_compatible_p): Declare.
* objc-lang.c (LANG_HOOKS_TYPES_COMPATIBLE_P): Define.
 
2005-01-16 Ziemowit Laski <zlaski@apple.com>
 
* objc-act.c (objc_push_parm): Call c_type_promotes_to()
via a lang-hook.
 
2005-01-15 Ziemowit Laski <zlaski@apple.com>
 
PR objc/19321
* objc-act.c (get_arg_type_list): Decay function arguments into
pointers.
(objc_push_parm): Likewise; bring PARM_DECL construction closer
in line with what the C front-end does.
(objc_get_parm_info): Call pushdecl() and finish_decl() on
each PARM_DECL, like the C front-end does.
(start_method_def): Remove redundant ARRAY_TYPE decay.
(objc_start_function): Bring closer in line with what the
C front-end does for functions.
 
2005-01-14 Mike Stump <mrs@apple.com>
 
* lang-specs.h ("@objective-c"): Use cc1obj when -E is used so
that -fobjc-exceptions is accepted.
 
2004-12-30 Ziemowit Laski <zlaski@apple.com>
 
PR objc/18971
* objc-act.c (get_arg_type_list, start_method_def): Decay
array arguments into pointers.
(gen_type_name_0): Learn to pretty-print array types.
 
2004-12-15 Ziemowit Laski <zlaski@apple.com>
 
* objc-act.c (build_private_template): Change to return 'void'; do
not set ivar_context, uprivate_record or objc_instance_type.
(objc_comptypes, gen_type_name_0): For types 'id' and 'Class',
retrieve protocol list from the pointee rather than the pointer itself;
check TYPE_HAS_OBJC_INFO(...) precondition before accessing
TYPE_OBJC_PROTOCOL_LIST.
(objc_get_protocol_qualified_type): For types 'id' and 'Class',
construct a variant of the pointee as well as the pointer, and
store protocol information in the former. When creating variants
of RECORD_TYPEs, clone their TYPE_LANG_SPECIFIC fields and propagate
TYPE_OBJC_INTERFACE information.
(objc_declare_class): If a TYPE_DECL is looked up, retrieve the
underlying RECORD_TYPE to check for presence of TYPE_OBJC_INTERFACE;
for newly-created RECORD_TYPEs, create a tentative TYPE_OBJC_INTERFACE
holding an IDENTIFIER_NODE.
(objc_finish_message_expr): Check TYPE_HAS_OBJC_INFO(...) before
accessing TYPE_OBJC_PROTOCOL_LIST; Use TYPE_OBJC_INTERFACE instead
of calling lookup_interface(); allow for TYPE_OBJC_INTERFACE holding
an IDENTIFIER_NODE (meaning a @class forward-declaration only).
(objc_is_public): Check TYPE_OBJC_INTERFACE instead of calling
lookup_interface().
(continue_class): For @implementations, set ivar_context,
uprivate_record and objc_instance_type, for @interfaces, call
build_private_template().
(encode_pointer): Check TYPE_HAS_OBJC_INFO(...) before accessing
TYPE_OBJC_INTERFACE.
(objc_types_are_equivalent): Check TYPE_HAS_OBJC_INFO(...) before
accessing TYPE_OBJC_PROTOCOL_LIST.
* objc-act.h (OBJC_INFO_SLOT_ELTS, TYPE_OBJC_INFO, INIT_TYPE_OBJC_INFO,
DUP_TYPE_OBJC_INFO, ALLOC_OBJC_TYPE_LANG_SPECIFIC,
SIZEOF_OBJC_TYPE_LANG_SPECIFIC): New macros.
(TYPE_OBJC_INTERFACE): Replaces TREE_STATIC_INSTANCE and now points
to an actual @interface; stored in TYPE_LANG_SPECIFIC(...).
(TYPE_OBJC_PROTOCOL_LIST): Replaces TYPE_PROTOCOL_LIST; stored in
TYPE_LANG_SPECIFIC(...).
(TREE_STATIC_INSTANCE, TYPE_PROTOCOL_LIST): Delete.
(IS_ID, IS_CLASS, IS_PROTOCOL_QUALIFIED_UNTYPED, IS_SUPER,
TYPED_OBJECT): Check for POINTER_TYPE rather than POINTER_TYPE_P;
adjust for use of TYPE_OBJC_INTERFACE and TYPE_OBJC_PROTOCOL_LIST
instead of TREE_STATIC_INSTANCE and TYPE_PROTOCOL_LIST.
 
2004-11-29 Joseph Myers <joseph@codesourcery.com>
 
PR c/7544
* Make-lang.in (objc/objc-act.o): Update dependencies.
* objc-act.c (objc_finish_file): Call
maybe_apply_pending_pragma_weaks if not OBJCPLUS.
 
2004-11-09 Andrew Pinski <pinskia@physics.uc.edu>
 
PR objc/18406
* obj-act.c (encode_type): 96bits doubles are encoded the
same way as 64bit and 128bit doubles are.
 
2004-11-09 Joseph S. Myers <joseph@codesourcery.com>
 
* objc-act.c: Use %q, %< and %> for quoting in diagnostics.
 
2004-11-08 Andrew Pinski <pinskia@physics.uc.edu>
 
PR objc/16546
* objc-act.c (generate_method_descriptors): Remove setting
the new decls' type to variable_length_type.
(generate_ivar_lists): Likewise.
(generate_dispatch_tables): Likewise.
 
2004-10-30 Ziemowit Laski <zlaski@apple.com>
 
* objc-act.c (objc_lookup_ivar): The new OTHER parameter
contains the result of the ID lookup by the C or C++
front-end; in class methods, use OTHER if it exists;
in instance methods, use OTHER only if it is locally
declared.
 
2004-10-26 Ziemowit Laski <zlaski@apple.com>
 
* objc-act.c (finish_class): Do not synthesize bogus
'extern objc_object *_Foo;' declarations for @interface Foo.
 
2004-10-25 Ziemowit Laski <zlaski@apple.com>
David Ayers <d.ayers@inode.at>
 
* objc-act.c (objc_comptypes): Use IS_PROTOCOL_QUALIFIED_UNTYPED
instead of IS_PROTOCOL_QUALIFIED_ID; add comparisons for:
'Class <Protocol> != id <Protocol>'; 'Class <Protocol> != <class> *';
'Class <Protocol> == id' and 'Class <Protocol> == Class'.
(objc_is_id): Add test for 'super'.
(objc_finish_message_expr): Allow for messaging of 'Class <Proto>'
receivers; if class methods are not found in protocol lists, search
for instance methods therein and warn if one is found. Look in
global hash tables for suitable method as a last resort when messaging
'id <Proto>', 'Class <Proto>' and invalid receiver types.
(objc_add_method): Insert instance methods listed in protocols into
the global class method hash table.
* objc-act.h (IS_PROTOCOL_QUALIFIED_ID): Rename to
IS_PROTOCOL_QUALIFIED_UNTYPED and allow for 'Class <Proto>' in
addition to 'id <Proto>'.
 
2004-10-21 Andrew Pinski <pinskia@physics.uc.edu>
 
PR objc/17923
* objc-act.c (objc_build_string_object): Create a CONST_DECL
for the NeXT runtime case.
 
2004-10-02 Kazu Hirata <kazu@cs.umass.edu>
 
* objc-act.c: Fix comment typos.
 
2004-09-24 Ziemowit Laski <zlaski@apple.com>
 
* objc-act.c (init_objc_symtab, init_module_descriptor,
build_shared_structure_initializer): When initializing 'long'
fields, ensure that the initializer value is also 'long'.
 
2004-09-24 Zack Weinberg <zack@codesourcery.com>
 
* objc-act.c: Change annotate_with_locus to SET_EXPR_LOCATION
throughout.
(objc_init): Only set input_line to 0 #ifndef USE_MAPPED_LOCATION.
(build_selector_translation_table): Use %J in diagnostic
instead of diddling input_line. Fix spelling.
 
2004-09-21 Ziemowit Laski <zlaski@apple.com>
 
* objc-act.c (objc_fold_objc_type_ref): New function.
* objc-act.h (objc_fold_objc_type_ref): New prototype.
 
2004-09-09 Joseph S. Myers <jsm@polyomino.org.uk>
 
* objc-act.c (objc_start_function, really_start_method,
objc_get_parm_info, start_method_def): Update to new arg_info
structures.
 
2004-09-07 Ziemowit Laski <zlaski@apple.com>
 
* Make-lang.in (objc/objc-parse.o): Depend on $(C_COMMON_H) instead of
objc/objc-act.h.
(objc/objc-act.o): Depend on $(HASHTAB_H).
* objc-act.c: Include hashtab.h; in ObjC++ mode, include cp-tree.h and
objcp-decl.h instead of c-tree.h.
(build_module_descriptor, get_class_ivars, synth_id_with_class_suffix,
error_with_ivar, gen_method_decl, gen_declaration, setup_string_decl,
build_protocol_template): Adjust prototypes.
(build_module_initializer_routine, start_class, continue_class,
finish_class, start_method_def, objc_start_function, start_protocol,
build_method_decl, objc_add_method, add_instance_variable,
build_ivar_reference, is_ivar, is_private, get_super_receiver,
build_selector_table_decl, objc_push_parm, objc_get_parm_info,
gen_type_name, gen_type_name_0, start_var_decl, finish_var_decl,
create_field_decl): New prototypes.
(objc_expand_function_end, comp_method_with_proto, objc_expr_last,
gen_declaration_1, gen_declarator, is_complex_decl, adorn_decl,
define_decl, create_builtin_decl, gen_declspecs): Remove prototypes.
(TYPE_ID): Rename to OBJECT_TYPEDEF_NAME.
(CLASS_TYPEDEF_NAME): New.
(TAG_EXECCLASS): Change from a global variable to a #define.
(TAG_RETURN_STRUCT): Delete.
(TAG_GNUINIT): New, holds '__objc_gnu_init' name.
(objc_inherit_code, objc_public_flag): New, moved from c-parse.in.
(string_descriptor): New struct.
(string_htab): New hash table.
(string_hash, string_eq): New prototypes.
(generate_struct_by_value_array): Call create_field_decl() instead of
create_builtin_decl().
(objc_init): Do not initialize objc_ellipsis_node or TAG_EXECCLASS;
In ObjC++ mode, call cxx_init() instead of c_objc_common_init().
(objc_finish_file): In ObjC++, call instantiate_pending_templates()
and cp_finish_file().
(define_decl, get_static_reference, get_protocol_reference,
create_builtin_decl): Remove functions.
(objc_start_class_interface, objc_start_category_interface,
objc_start_protocol, objc_continue_interface, objc_finish_interface,
objc_start_class_implementation, objc_start_category_implementation,
objc_continue_implementation, objc_finish_implementation,
objc_set_visibility, objc_set_method_type,
objc_build_method_signature, objc_add_method_declaration,
objc_start_method_definition, objc_add_instance_variable,
objc_get_protocol_qualified_type, create_field_decl,
start_var_decl, finish_var_decl): New functions.
(setup_string_decl): Simplify since it is only called once.
(synth_module_prologue): Call build_class_template(); predefine 'id'
and 'Class' as typedefs; rename 'temp_type' to 'type'; disable debug
hooks for duration of function; fix GNU runtime messenger signatures
to correspond to reality; forward-declare '__objc_exec_class' for the
GNU runtime; call build_selector_table_decl(); in ObjC++ mode, generate
'extern "C" { ... }' wrappers around synthesized declarations; call
build_protocol_template() and build_category_template().
(string_hash, string_eq): New functions.
(objc_build_string_object): Check metaclass correctness only once;
store string literals in hash table.
(objc_build_constructor): Do not convert initializer elements;
adjust for ObjC++ impedance mismatch.
(build_objc_symtab_template): Call create_field_decl() instead of
create_builtin_decl().
(init_objc_symtab): Add missing conversion to initializer element.
(build_metadata_decl): Call start_var_decl() instead of define_decl().
(generate_objc_symtab_decl): Do not call build_category_template();
call start_var_decl() and finish_var_decl() instead of start_decl()
and finish_decl().
(build_module_descriptor): Call create_field_decl() instead of
grokfield(); call start_var_decl() and finish_var_decl() instead of
start_decl() and finish_decl(); always mark module descriptor as
used; move GNU runtime-specific functionality to
build_module_initializer_routine().
(build_module_initializer_routine): New function, broken off of
build_module_descriptor().
(objc_static_init_needed_p, objc_generate_static_init_call): New
functions.
(generate_static_references, generate_strings,
build_selector_translation_table, generate_descriptor_table,
generate_ivars_list, generate_dispatch_table, generate_category): Call
start_var_decl() and finish_var_decl() instead of start_decl() and
finish_decl(); build a type directly instead of via groktypename().
(build_selector_reference_decl, build_selector_table_decl,
build_class_reference_decl, build_protocol_reference,
generate_objc_image_info): Call start_var_decl() instead of
build_decl().
(build_selector_reference): For GNU runtime, do not call
build_selector_reference_decl().
(build_selector, build_typed_selector_reference): Always convert
result to the selector type.
(add_objc_string): Cast return value to 'char *'.
(build_method_prototype_template, build_selector_template,
build_method_template): Use actual selector type for fields
pointing to selectors.
(finish_objc): For GNU runtime, call
build_module_initializer_routine() after build_module_descriptor().
(generate_protocol_list, generate_shared_structures): Call
start_var_decl() and finish_var_decl() instead of start_decl() and
finish_decl(); build a type directly instead of via
groktypename().
(synth_id_with_class_suffix): Return a string.
(get_arg_type_list): For instance methods, use the instance type for
'self'; do not call groktypename_in_parm_context().
(build_objc_string_decl): Squash redeclaration errors in ObjC++.
(objc_is_class_name): Use OBJC_TYPE_NAME instead of TYPE_NAME;
handle RECORD_TYPEs in ObjC as well as ObjC++.
(objc_is_id): New function.
(objc_is_object_ptr): Return the canonical type node.
(objc_get_class_ivars): Simplify using get_class_ivars().
(get_class_ivars): Remove second parameter; create a fresh copy
of the ivar list for each call; do not check for existence of
super class.
(objc_eh_runtime_type): Mark #ifndef OBJCPLUS.
(objc_init_exceptions): When using SJLJ-style exceptions, require
the use of '-fobjc-exceptions' flag; do not require it for DWARF-style
exceptions.
(objc_build_exc_ptr, next_sjlj_build_try_catch_finally): Use
objc_object_type instead of objc_id_type.
(objc_begin_catch_clause): Convert the incoming PARM_DECL into
a VAR_DECL before placing it in the appropriate scope; do not
call define_decl(); adjust call to c_begin_compound_stmt();
use objc_object_type instead of objc_id_type.
(build_next_objc_exception_stuff): Call create_field_decl() instead
of create_builtin_decl(); construct type directly instead of calling
groktypename(); use OBJC_VOID_AT_END to mark end of function parameters.
(build_private_template): Adjust call to get_class_ivars(); build
a type directly instead of via groktypename().
(build_protocol_template, build_method_prototype_list_template,
build_method_prototype_template, build_category_template,
build_selector_template, build_class_template, build_super_template,
build_ivar_template, build_ivar_list_template,
build_method_list_template, build_method_template):
Call create_field_decl() instead of grokfield().
(objc_method_parm_type): Do not call groktypename().
(generate_descriptor_table): Call start_var_decl() and
finish_var_decl() instead of start_decl() and finish_decl().
(generate_method_descriptors, build_protocol_initializer,
generate_dispatch_tables, build_category_initializer,
build_shared_structure_initializer): Do not call groktypename().
(generate_protocols): Call start_var_decl() and finish_var_decl()
instead of start_decl() and finish_decl(); do not call groktypename().
(error_with_ivar): Remove last parameter.
(check_ivars): Do not iterate ovar CLASS_RAW_IVARS lists in addition
to CLASS_IVARS lists; adjust calls to error_with_ivar().
(generate_ivar_lists): Convert one of the initializer elements; do
not call groktypename().
(get_arg_type_list, start_method_def, gen_method_def): Account for
new representation of variable arguments and '...' in Objective-C
methods; add Objective-C++ impedance matching code.
(is_objc_type_qualifier): Remove function.
(adjust_type_for_id_default): Simplify; there is no longer a need to
wade through declspecs.
(lookup_interface, start_class, continue_class,
finish_class, start_method_def, start_protocol, build_method_decl,
objc_add_method, add_instance_variable, build_ivar_reference,
is_ivar, is_private, get_super_receiver, objc_build_finally_epilogue):
Make into static functions.
(receiver_is_class_object): Use new IS_CLASS() macro.
(objc_build_message_expr): Tweak ObjC++ message argument handling;
call objc_finish_message_expr() instead of finish_message_expr().
(finish_message_expr): Rename to objc_finish_message_expr(); use
OBJC_TYPE_NAME and OBJC_SET_TYPE_NAME macros instead of TYPE_NAME.
call gen_type_name() instead of gen_declaration(); call objc_is_id()
instead of using IS_ID and IS_CLASS; Use objc_class_name instead of
calling get_identifier("Class"); handle CONVERT_EXPRs in receiver.
(build_objc_method_call, warn_with_method): Do not call groktypename().
(build_ivar_reference): Call convert() instead of clobbering in a
type.
(hash_init): Initialize string_htab hash table.
(add_instance_variable): Simplify parameter list; do not call grokfield();
do not populate CLASS_IVARS list.
(start_class): Check for the existence of super class, if one was specified.
(continue_class): Use CLASS_RAW_IVARS rather than CLASS_IVARS; do not
call build_class_template(); adjust call to get_class_ivars(); call
build_decl(), pushdecl() and finish_decl() instead of define_decl().
(finish_class): Call build_decl(), pushdecl() and finish_decl() instead
of define_decl().
(add_protocols): Use PROTOCOL_BINFO_ELTS for the tree vector size.
(start_protocol): Do not call build_protocol_template(); use
PROTOCOL_BINFO_ELTS for the tree vector size.
(encode_type_qualifiers): Do not handle the 'const' qualifier here.
(encode_pointer): Encode 'const char *' as 'r*', for backwards
compatibility.
(encode_array): Use HOST_WIDE_INT_PRINT_DEC instead of "%ld".
(encode_type): Handle the 'const' qualifier here.
(objc_parmlist): New global variable, sued by objc_push_parm and
objc_get_parm_info().
(objc_push_parm, objc_get_parm_info): New functions.
(objc_expr_last): Remove function.
(synth_self_and_ucmd_args): For instance methods, use the instance
type for 'self'; call objc_push_parm() instead of push_parm_decl().
(start_method_def): Do not call push_scope(), declare_parm_level(),
pop_scope(), push_parm_decl(), store_parm_decls() or objc_expr_last();
just use objc_push_parm() and objc_get_parm_info().
(comp_method_with_proto): Remove function.
(objc_types_are_equivalent): Strip away indirections before comparing
underlying types.
(comp_proto_with_proto): Do not call groktypename(); types are no
longer in raw declspec format.
(objc_start_function): New function.
(really_start_method): Call comp_proto_with_proto() instead of
comp_method_with_proto(); call objc_start_function() instead of
hand-crafting a function declarator.
(continue_method_def, objc_expand_function_end): Remove functions.
(get_super_receiver): Call objc_get_current_scope() instead of
get_current_scope(); reference 'super_class' field (instead of
'class').
(finish_method_def): Rename to objc_finish_method_definition() and
add a function decl parameter; move method encoding call from
objc_expand_function_end().
(is_complex_decl, adorn_decl, gen_declarator, gen_declspecs,
gen_declaration_1): Remove functions.
(tmpbuf, RAW_DECLSPEC): Remove.
(gen_declaration): Remove second parameter; simplify to deal
with TYPE_P nodes instead of raw declspecs.
(gen_type_name, gen_type_name_0): New functions.
(gen_method_decl): Remove second parameter; call gen_type_name()
instead of gen_declaration_1().
(dump_interface): Adjust calls to gen_declaration() and
gen_method_decl(); do not allocate a separate string buffer.
(init_objc): Allocate a larger string buffer to accommodate
dump_interface(); adjust call to build_module_descriptor();
add call to build_module_initializer_routine() for the GNU
runtime.
(generate_classref_translation_entry): Do not call start_decl(); call
finish_var_decl() instead of finish_decl(); call convert() instead of
build_c_cast().
* objc-act.h (CLASS_OWN_IVARS): Remove accessor.
(CLASS_BINFO_ELTS): Reduce from 6 to 5, now that CLASS_OWN_IVARS is
gone.
(OCTI_GNU_INIT_DECL, GNU_INIT_decl): New.
(OCTI_ELLIPSIS_NODE, objc_ellipsis_node): Remove.
(OCTI_ID_ID, id_type, objc_id_id): Rename to OCTI_ID_NAME,
objc_object_type and objc_object_name, respectively.
(OCTI_CLS_REF, OCTI_CLASS_NAME, objc_class_reference,
objc_class_name): New.
(IS_CLASS): New macro.
(IS_ID, IS_SUPER): Robustify.
(OCTI_EXECCLASS_DECL, execclass_decl): New.
(finish_file, start_class, continue_class, finish_class,
start_method_def, continue_method_def, finish_method_def,
start_protocol, finish_protocol, objc_build_throw_stmt,
objc_build_try_catch_finally_stmt, objc_build_synchronized_prologue,
objc_build_synchronized_epilogue, objc_build_try_prologue,
objc_build_try_epilogue, objc_build_catch_stmt, objc_build_catch_epilogue,
objc_build_finally_prologue, objc_build_finally_epilogue,
is_ivar, is_private, is_public, add_instance_variable, objc_add_method,
get_super_receiver, objc_clear_super_receiver, get_class_ivars_from_name,
get_class_reference, get_static_reference, get_object_reference,
build_message_expr, finish_message_expr, build_selector_expr,
build_ivar_reference, build_keyword_decl, build_method_decl,
build_protocol_expr, build_objc_string_object, objc_declare_alias,
objc_declare_class, objc_declare_protocols, objc_comptypes,
objc_check_decl, build_encode_expr): Remove prototypes.
(imp_count, cat_count): Make GGC-aware.
(OBJC_SET_TYPE_NAME): New macro.
 
2004-09-03 Ziemowit Laski <zlaski@apple.com>
 
* config-lang.in: Update copyright notice.
(lang_requires): Indicate that ObjC requires C to be built first.
 
2004-09-01 Ziemowit Laski <zlaski@apple.com>
 
* objc-act.c (objc_check_decl): Use OBJC_TYPE_NAME macro instead of
TYPE_NAME.
(build_objc_string_object): Rename to objc_build_string_object().
(get_class_reference): Rename to objc_get_class_reference().
(get_class_ivars_from_name): Rename to objc_get_class_ivars().
(next_sjlj_build_catch_list, get_super_receiver): Call
objc_get_class_reference() instead of get_class_reference().
(build_keyword_decl): Rename to objc_build_keyword_decl().
(build_message_expr): Rename to objc_build_message_expr().
(build_protocol_expr): Rename to objc_build_protocol_expr().
(build_selector_expr): Rename to objc_build_selector_expr().
(build_encode_expr): Rename to objc_build_encode_expr().
* objc-act.h (get_class_ivars_from_name): Rename prototype to
objc_get_class_ivars().
(get_class_reference): Rename prototype to objc_get_class_reference().
(build_message_expr): Rename prototype to objc_build_message_expr().
(build_selector_expr): Rename prototype to objc_build_selector_expr().
(build_keyword_decl): Rename prototype to objc_build_keyword_decl().
(build_protocol_expr): Rename prototype to objc_build_prototype_expr().
(build_objc_string_object): Rename prototype to
objc_build_string_object().
 
2004-09-01 Ziemowit Laski <zlaski@apple.com>
 
* objc-act.c (lookup_interface): Make function 'static' and add a
local prototype.
(objc_check_decl, get_class_reference, objc_declare_alias,
objc_declare_class, objc_is_object_ptr): Call objc_is_class_name()
instead of is_class_name().
(get_super_receiver, objc_clear_super_receiver): Call
objc_get_current_scope() instead of get_current_scope().
(is_class_name): Rename to objc_is_class_name.
(lookup_objc_ivar): Rename to objc_lookup_ivar.
 
2004-08-28 Ziemowit Laski <zlaski@apple.com>
 
* objc-act.c (objc_is_reserved_word): New function.
 
2004-08-15 Ziemowit Laski <zlaski@apple.com>
 
* Make-lang.in (objc/objc-lang.o): Depend on $(C_PRETTY_PRINT_H),
$(DIAGNOSTIC_H), c-objc-common.h and gtype-objc.h, but not on toplev.h.
(objc/objc-parse.o): Do not depend on gtype-objc.h.
* objc-act.c: Do not include gtype-objc.h.
(finish_file): Rename to objc_finish_file().
* objc-act.h (finish_file): Update copyright notice; remove prototype.
* objc-lang.c: Update copyright notice; include diagnostic.h,
c-objc-common.h, c-pretty-print.h and gtype-objc.h; do not include
toplev.h.
(finish_file): New hook routine.
(LANG_HOOKS_FINISH, LANG_HOOKS_INIT_OPTIONS,
LANG_HOOKS_INITIALIZE_DIAGNOSTICS, LANG_HOOKS_HANDLE_OPTION,
LANG_HOOKS_MISSING_ARGUMENT, LANG_HOOKS_POST_OPTIONS,
LANG_HOOKS_GET_ALIAS_SET, LANG_HOOKS_SAFE_FROM_P,
LANG_HOOKS_EXPAND_EXPR, LANG_HOOKS_MARK_ADDRESSABLE,
LANG_HOOKS_PARSE_FILE, LANG_HOOKS_TRUTHVALUE_CONVERSION,
LANG_HOOKS_FINISH_INCOMPLETE_DECL, LANG_HOOKS_UNSAFE_FOR_REEVAL,
LANG_HOOKS_STATICP, LANG_HOOKS_SET_DECL_ASSEMBLER_NAME,
LANG_HOOKS_NO_BODY_BLOCKS, LANG_HOOKS_WARN_UNUSED_GLOBAL_DECL,
LANG_HOOKS_PRINT_IDENTIFIER, LANG_HOOKS_FUNCTION_ENTER_NESTED,
LANG_HOOKS_FUNCTION_LEAVE_NESTED, LANG_HOOKS_DUP_LANG_SPECIFIC_DECL,
LANG_HOOKS_DECL_UNINIT, LANG_HOOKS_RTL_EXPAND_STMT,
LANG_HOOKS_COMMON_ATTRIBUTE_TABLE, LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE,
LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN,
LANG_HOOKS_TREE_INLINING_DISREGARD_INLINE_LIMITS,
LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P,
LANG_HOOKS_TREE_INLINING_CONVERT_PARM_FOR_INLINING,
LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS,
LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN,
LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION, LANG_HOOKS_TYPE_FOR_MODE,
LANG_HOOKS_TYPE_FOR_SIZE, LANG_HOOKS_SIGNED_TYPE,
LANG_HOOKS_UNSIGNED_TYPE, LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE,
LANG_HOOKS_INCOMPLETE_TYPE_ERROR, LANG_HOOKS_TYPE_PROMOTES_TO,
LANG_HOOKS_REGISTER_BUILTIN_TYPE, LANG_HOOKS_WRITE_GLOBALS):
Move to c-objc-common.h.
 
Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
Free Software Foundation, Inc.
 
Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.
/gcc/objc/objc-next-metadata-tags.h
0,0 → 1,172
/* Declarations for meta-data attribute tags.
Copyright (C) 2011 Free Software Foundation, Inc.
Contributed by Iain Sandoe
 
This file is part of GCC.
 
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
 
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
 
/* These are identifiers used to flag meta-data attributes such that they
survive LTO and might be placed in correct sections for the target. */
 
enum objc_runtime_tree_index
{
OCTI_RT_OBJC_META,
OCTI_RT_META_BASE,
 
OCTI_RT_META_CLASS,
OCTI_RT_META_METACLASS,
OCTI_RT_META_CATEGORY,
OCTI_RT_META_PROTOCOL,
 
OCTI_RT_META_CLASS_CLS_VARS,
OCTI_RT_META_CLASS_NST_VARS,
 
OCTI_RT_META_CLASS_CLS_METH,
OCTI_RT_META_CLASS_NST_METH,
OCTI_RT_META_CATEG_CLS_METH,
OCTI_RT_META_CATEG_NST_METH,
OCTI_RT_META_PROTO_CLS_METH,
OCTI_RT_META_PROTO_NST_METH,
 
OCTI_RT_META_CLASS_PROT,
OCTI_RT_META_CATEG_PROT,
OCTI_RT_META_PROT_REFS,
 
OCTI_RT_META_MSG_REFS,
OCTI_RT_META_SEL_REFS,
 
OCTI_RT_META_CLSLST_REFS,
OCTI_RT_META_CLASS_REF,
OCTI_RT_META_SUPER_REF,
OCTI_RT_META_CLSLST_NLZY_LAB,
OCTI_RT_META_CLSLST_LAB,
OCTI_RT_META_LAB_PROTOLIST,
OCTI_RT_META_LAB_NLZY_CAT,
OCTI_RT_META_LAB_CAT,
 
OCTI_RT_META_PROPERTY_LIST,
OCTI_RT_META_PROTOCOL_EXT,
OCTI_RT_META_CLASS_EXT,
 
OCTI_RT_META_CLASS_NAME,
OCTI_RT_META_METHD_NAME,
OCTI_RT_META_METHD_TYPE,
OCTI_RT_META_PROPN_ATTR,
 
OCTI_RT_META_MODULES,
OCTI_RT_META_SYMTAB,
OCTI_RT_META_INFO,
 
OCTI_RT_META_EHTYPE,
 
OCTI_RT_META_CONST_STR,
 
OCTI_RT_META_MAX
};
 
/* Tags for the META data so that the backend can put them in the correct
sections for targets/runtimes (Darwin/NeXT) that require this.
This information also survives LTO - which might produce mixed language
output. */
 
/* Objective-C meta data attribute tag */
#define objc_meta objc_rt_trees[OCTI_RT_OBJC_META]
/* Attribute values, base = default section. */
#define meta_base objc_rt_trees[OCTI_RT_META_BASE]
 
/* CLASS. */
#define meta_class objc_rt_trees[OCTI_RT_META_CLASS]
/* METACLASS. */
#define meta_metaclass objc_rt_trees[OCTI_RT_META_METACLASS]
/* CLASS. */
#define meta_category objc_rt_trees[OCTI_RT_META_CATEGORY]
/* PROTOCOL. */
#define meta_protocol objc_rt_trees[OCTI_RT_META_PROTOCOL]
 
/* Class class vars section. */
#define meta_clac_vars objc_rt_trees[OCTI_RT_META_CLASS_CLS_VARS]
/* Class instance vars section. */
#define meta_clai_vars objc_rt_trees[OCTI_RT_META_CLASS_NST_VARS]
/* Class class methods section. */
#define meta_clac_meth objc_rt_trees[OCTI_RT_META_CLASS_CLS_METH]
/* Class instance methods section. */
#define meta_clai_meth objc_rt_trees[OCTI_RT_META_CLASS_NST_METH]
/* Category class methods section. */
#define meta_catc_meth objc_rt_trees[OCTI_RT_META_CATEG_CLS_METH]
/* Category instance methods section. */
#define meta_cati_meth objc_rt_trees[OCTI_RT_META_CATEG_NST_METH]
#define meta_proto_cls_meth \
objc_rt_trees[OCTI_RT_META_PROTO_CLS_METH]
#define meta_proto_nst_meth \
objc_rt_trees[OCTI_RT_META_PROTO_NST_METH]
 
/* Class protocols. */
#define meta_clas_prot objc_rt_trees[OCTI_RT_META_CLASS_PROT]
/* Category protocols. */
#define meta_catg_prot objc_rt_trees[OCTI_RT_META_CATEG_PROT]
/* Protocol references. */
#define meta_proto_ref objc_rt_trees[OCTI_RT_META_PROT_REFS]
 
/* Message refs. */
#define meta_mref objc_rt_trees[OCTI_RT_META_MSG_REFS]
/* Selector refs. */
#define meta_sel_refs objc_rt_trees[OCTI_RT_META_SEL_REFS]
 
/* Class list refs. */
#define meta_class_ref objc_rt_trees[OCTI_RT_META_CLSLST_REFS]
#define meta_class_reference \
objc_rt_trees[OCTI_RT_META_CLASS_REF]
#define meta_superclass_ref \
objc_rt_trees[OCTI_RT_META_SUPER_REF]
/* Class list Label. */
#define meta_label_classlist \
objc_rt_trees[OCTI_RT_META_CLSLST_LAB]
/* Class list Label (non lazy). */
#define meta_label_nonlazy_classlist \
objc_rt_trees[OCTI_RT_META_CLSLST_NLZY_LAB]
#define meta_label_categorylist \
objc_rt_trees[OCTI_RT_META_LAB_CAT]
#define meta_label_nonlazy_categorylist \
objc_rt_trees[OCTI_RT_META_LAB_NLZY_CAT]
 
#define meta_label_protocollist \
objc_rt_trees[OCTI_RT_META_LAB_PROTOLIST]
 
 
/* V1 - property list. */
#define meta_proplist objc_rt_trees[OCTI_RT_META_PROPERTY_LIST]
#define meta_protocol_extension \
objc_rt_trees[OCTI_RT_META_PROTOCOL_EXT]
#define meta_class_extension \
objc_rt_trees[OCTI_RT_META_CLASS_EXT]
/* String sections. */
#define meta_class_name objc_rt_trees[OCTI_RT_META_CLASS_NAME]
#define meta_meth_name objc_rt_trees[OCTI_RT_META_METHD_NAME]
#define meta_meth_type objc_rt_trees[OCTI_RT_META_METHD_TYPE]
#define meta_prop_name_attr \
objc_rt_trees[OCTI_RT_META_PROPN_ATTR]
 
#define meta_modules objc_rt_trees[OCTI_RT_META_MODULES]
#define meta_symtab objc_rt_trees[OCTI_RT_META_SYMTAB]
#define meta_info objc_rt_trees[OCTI_RT_META_INFO]
 
#define meta_ehtype objc_rt_trees[OCTI_RT_META_EHTYPE]
 
#define meta_const_str objc_rt_trees[OCTI_RT_META_CONST_STR]
 
#define OBJCMETA(DECL,VERS,KIND) \
if (VERS) \
DECL_ATTRIBUTES (DECL) = build_tree_list ((VERS), (KIND));
/gcc/objc/config-lang.in
0,0 → 1,39
# Top level configure fragment for GNU Objective-C
# Copyright (C) 1997, 1998, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2010,
# 2011 Free Software Foundation, Inc.
 
#This file is part of GCC.
 
#GCC is free software; you can redistribute it and/or modify
#it under the terms of the GNU General Public License as published by
#the Free Software Foundation; either version 3, or (at your option)
#any later version.
 
#GCC is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
#GNU General Public License for more details.
 
# You should have received a copy of the GNU General Public License
# along with GCC; see the file COPYING3. If not see
# <http://www.gnu.org/licenses/>.
 
# Configure looks for the existence of this file to auto-config each language.
# We define several parameters used by configure:
#
# language - name of language as it would appear in $(LANGUAGES)
# compilers - value to add to $(COMPILERS)
 
language="objc"
 
compilers="cc1obj\$(exeext)"
 
target_libs=target-libobjc
 
# Most of the object files for cc1obj actually come from C.
lang_requires="c"
 
# Order is important. If you change this list, make sure you test
# building without C++ as well; that is, remove the gcc/cp directory,
# and build with --enable-languages=c,objc.
gtfiles="\$(srcdir)/objc/objc-map.h \$(srcdir)/c-family/c-objc.h \$(srcdir)/objc/objc-act.h \$(srcdir)/objc/objc-act.c \$(srcdir)/objc/objc-runtime-shared-support.c \$(srcdir)/objc/objc-gnu-runtime-abi-01.c \$(srcdir)/objc/objc-next-runtime-abi-01.c \$(srcdir)/objc/objc-next-runtime-abi-02.c \$(srcdir)/c-parser.c \$(srcdir)/c-tree.h \$(srcdir)/c-decl.c \$(srcdir)/c-lang.h \$(srcdir)/c-objc-common.c \$(srcdir)/c-family/c-common.c \$(srcdir)/c-family/c-common.h \$(srcdir)/c-family/c-cppbuiltin.c \$(srcdir)/c-family/c-pragma.h \$(srcdir)/c-family/c-pragma.c"
/gcc/objc/objc-runtime-shared-support.c
0,0 → 1,724
/* Support routines shared by all runtimes.
Copyright (C) 2011 Free Software Foundation, Inc.
Contributed by Iain Sandoe (partially split from objc-act.c)
 
This file is part of GCC.
 
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
 
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
 
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "tree.h"
 
#ifdef OBJCPLUS
#include "cp-tree.h"
#else
#include "c-tree.h"
#include "c-lang.h"
#endif
#include "langhooks.h"
#include "c-family/c-objc.h"
#include "objc-act.h"
 
/* When building Objective-C++, we are not linking against the C front-end
and so need to replicate the C tree-construction functions in some way. */
#ifdef OBJCPLUS
#define OBJCP_REMAP_FUNCTIONS
#include "objcp-decl.h"
#endif /* OBJCPLUS */
 
/* Hooks for string decls etc. */
#include "objc-runtime-hooks.h"
 
#include "objc-runtime-shared-support.h"
#include "objc-encoding.h"
 
/* rt_trees identifiers - shared between NeXT implementations. These allow
the FE to tag meta-data in a manner that survives LTO and can be used when
the runtime requires that certain meta-data items appear in particular
named sections. */
#include "objc-next-metadata-tags.h"
extern GTY(()) tree objc_rt_trees[OCTI_RT_META_MAX];
 
/* Rather than repeatedly looking up the identifiers, we save them here. */
tree objc_rt_trees[OCTI_RT_META_MAX];
 
/* For building an objc struct. These might not be used when this file
is compiled as part of obj-c++. */
 
static bool objc_building_struct;
static struct c_struct_parse_info *objc_struct_info ATTRIBUTE_UNUSED;
 
/* Start building a struct for objc. */
 
tree
objc_start_struct (tree name)
{
gcc_assert (!objc_building_struct);
objc_building_struct = true;
return start_struct (input_location, RECORD_TYPE, name, &objc_struct_info);
}
 
/* Finish building a struct for objc. */
 
tree
objc_finish_struct (tree type, tree fieldlist)
{
gcc_assert (objc_building_struct);
objc_building_struct = false;
return finish_struct (input_location, type, fieldlist, NULL_TREE,
objc_struct_info);
}
 
tree
build_sized_array_type (tree base_type, int size)
{
tree index_type = build_index_type (build_int_cst (NULL_TREE, size - 1));
return build_array_type (base_type, index_type);
}
 
/* Create a declaration for field NAME of a given TYPE. */
 
static tree
create_field_decl (tree type, const char *name)
{
return build_decl (input_location,
FIELD_DECL, get_identifier (name), type);
}
 
tree
add_field_decl (tree type, const char *name, tree **chain)
{
tree field = create_field_decl (type, name);
 
if (*chain != NULL)
**chain = field;
*chain = &DECL_CHAIN (field);
 
return field;
}
 
/* Create a global, static declaration for variable NAME of a given TYPE. The
finish_var_decl() routine will need to be called on it afterwards. */
 
tree
start_var_decl (tree type, const char *name)
{
tree var = build_decl (input_location,
VAR_DECL, get_identifier (name), type);
TREE_STATIC (var) = 1;
DECL_INITIAL (var) = error_mark_node; /* A real initializer is coming... */
DECL_IGNORED_P (var) = 1;
DECL_ARTIFICIAL (var) = 1;
DECL_CONTEXT (var) = NULL_TREE;
#ifdef OBJCPLUS
DECL_THIS_STATIC (var) = 1; /* squash redeclaration errors */
#endif
return var;
}
 
/* Finish off the variable declaration created by start_var_decl(). */
 
void
finish_var_decl (tree var, tree initializer)
{
finish_decl (var, input_location, initializer, NULL_TREE, NULL_TREE);
}
 
/* Just a handy wrapper for add_objc_string. */
 
tree
build_selector (tree ident)
{
return convert (objc_selector_type, add_objc_string (ident, meth_var_names));
}
 
/* --- templates --- */
 
/* Set 'objc_super_template' to the data type node for 'struct _objc_super'.
This needs to be done just once per compilation. */
 
/* struct _objc_super {
struct _objc_object *self;
struct _objc_class *super_class;
[or Class cls; for the abi v2]
}; */
 
void
build_super_template (void)
{
tree decls, *chain = NULL;
 
objc_super_template = objc_start_struct (get_identifier (UTAG_SUPER));
 
/* struct _objc_object *self; */
decls = add_field_decl (objc_object_type, "self", &chain);
 
/* struct _objc_class *super_class; */
add_field_decl (build_pointer_type (objc_class_template),
"super_class", &chain);
 
objc_finish_struct (objc_super_template, decls);
}
 
/* To accomplish method prototyping without generating all kinds of
inane warnings, the definition of the dispatch table entries were
changed from:
 
struct objc_method { SEL _cmd; ...; id (*_imp)(); };
to:
struct objc_method { SEL _cmd; ...; void *_imp; }; */
 
tree
build_method_template (void)
{
tree _SLT_record;
tree decls, *chain = NULL;
 
_SLT_record = objc_start_struct (get_identifier (UTAG_METHOD));
 
/* SEL _cmd; */
decls = add_field_decl (objc_selector_type, "_cmd", &chain);
 
/* char *method_types; */
add_field_decl (string_type_node, "method_types", &chain);
 
/* void *_imp; */
add_field_decl (build_pointer_type (void_type_node), "_imp", &chain);
 
objc_finish_struct (_SLT_record, decls);
 
return _SLT_record;
}
 
tree
build_method_prototype_template (void)
{
tree proto_record;
tree decls, *chain = NULL;
 
proto_record = objc_start_struct (get_identifier (UTAG_METHOD_PROTOTYPE));
 
/* SEL _cmd; */
decls = add_field_decl (objc_selector_type, "_cmd", &chain);
 
/* char *method_types; */
add_field_decl (string_type_node, "method_types", &chain);
 
objc_finish_struct (proto_record, decls);
 
return proto_record;
}
 
/* struct {
struct _objc__method_prototype_list *method_next;
int method_count;
struct objc_method method_list[method_count];
}; */
 
tree
build_method_list_template (tree list_type, int size)
{
tree objc_ivar_list_record;
tree array_type, decls, *chain = NULL;
 
objc_ivar_list_record = objc_start_struct (NULL_TREE);
 
/* struct _objc__method_prototype_list *method_next; */
decls = add_field_decl (objc_method_proto_list_ptr, "method_next", &chain);
 
/* int method_count; */
add_field_decl (integer_type_node, "method_count", &chain);
 
/* struct objc_method method_list[]; */
array_type = build_sized_array_type (list_type, size);
add_field_decl (array_type, "method_list", &chain);
 
objc_finish_struct (objc_ivar_list_record, decls);
 
return objc_ivar_list_record;
}
 
/* struct objc_method_prototype_list {
int count;
struct objc_method_prototype {
SEL name;
char *types;
} list[1];
}; */
 
tree
build_method_prototype_list_template (tree list_type, int size)
{
tree objc_ivar_list_record;
tree array_type, decls, *chain = NULL;
 
/* Generate an unnamed struct definition. */
 
objc_ivar_list_record = objc_start_struct (NULL_TREE);
 
/* int method_count; */
decls = add_field_decl (integer_type_node, "method_count", &chain);
 
/* struct objc_method method_list[]; */
array_type = build_sized_array_type (list_type, size);
add_field_decl (array_type, "method_list", &chain);
 
objc_finish_struct (objc_ivar_list_record, decls);
 
return objc_ivar_list_record;
}
 
/* --- names, decls entry --- */
 
/* For each string section we have a chain which maps identifier nodes
to decls for the strings. */
 
static GTY(()) int meth_var_names_idx;
static GTY(()) int meth_var_types_idx;
static GTY(()) int property_name_attr_idx;
 
tree
add_objc_string (tree ident, string_section section)
{
tree *chain, decl, type;
char buf[BUFSIZE];
 
switch (section)
{
case class_names:
chain = &class_names_chain;
snprintf (buf, BUFSIZE, "_OBJC_ClassName_%s", IDENTIFIER_POINTER (ident));
break;
case meth_var_names:
chain = &meth_var_names_chain;
snprintf (buf, BUFSIZE, "_OBJC_METH_VAR_NAME_%d", meth_var_names_idx++);
break;
case meth_var_types:
chain = &meth_var_types_chain;
snprintf (buf, BUFSIZE, "_OBJC_METH_VAR_TYPE_%d", meth_var_types_idx++);
break;
case prop_names_attr:
chain = &prop_names_attr_chain;
snprintf (buf, BUFSIZE, "_OBJC_PropertyAttributeOrName_%d", property_name_attr_idx++);
break;
default:
gcc_unreachable ();
}
 
while (*chain)
{
if (TREE_VALUE (*chain) == ident)
return convert (string_type_node,
build_unary_op (input_location,
ADDR_EXPR, TREE_PURPOSE (*chain), 1));
 
chain = &TREE_CHAIN (*chain);
}
 
type = build_sized_array_type (char_type_node, IDENTIFIER_LENGTH (ident) + 1);
/* Get a runtime-specific string decl which will be finish_var()'ed in
generate_strings (). */
decl = (*runtime.string_decl) (type, buf, section);
TREE_CONSTANT (decl) = 1;
*chain = tree_cons (decl, ident, NULL_TREE);
 
return convert (string_type_node,
build_unary_op (input_location, ADDR_EXPR, decl, 1));
}
 
/* --- shared metadata routines --- */
 
tree
build_descriptor_table_initializer (tree type, tree entries)
{
VEC(constructor_elt,gc) *inits = NULL;
 
do
{
VEC(constructor_elt,gc) *elts = NULL;
 
CONSTRUCTOR_APPEND_ELT (elts, NULL_TREE,
build_selector (METHOD_SEL_NAME (entries)));
CONSTRUCTOR_APPEND_ELT (elts, NULL_TREE,
add_objc_string (METHOD_ENCODING (entries),
meth_var_types));
 
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE,
objc_build_constructor (type, elts));
 
entries = DECL_CHAIN (entries);
}
while (entries);
 
return objc_build_constructor (build_array_type (type, 0), inits);
}
 
tree
build_dispatch_table_initializer (tree type, tree entries)
{
VEC(constructor_elt,gc) *inits = NULL;
 
do
{
VEC(constructor_elt,gc) *elems = NULL;
tree expr;
 
CONSTRUCTOR_APPEND_ELT (elems, NULL_TREE,
build_selector (METHOD_SEL_NAME (entries)));
 
/* Generate the method encoding if we don't have one already. */
if (! METHOD_ENCODING (entries))
METHOD_ENCODING (entries) =
encode_method_prototype (entries);
 
CONSTRUCTOR_APPEND_ELT (elems, NULL_TREE,
add_objc_string (METHOD_ENCODING (entries),
meth_var_types));
 
expr = convert (ptr_type_node,
build_unary_op (input_location, ADDR_EXPR,
METHOD_DEFINITION (entries), 1));
CONSTRUCTOR_APPEND_ELT (elems, NULL_TREE, expr);
 
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE,
objc_build_constructor (type, elems));
 
entries = DECL_CHAIN (entries);
}
while (entries);
 
return objc_build_constructor (build_array_type (type, 0), inits);
}
 
/* Used only by build_*_selector_translation_table (). */
void
diagnose_missing_method (tree meth, location_t here)
{
tree method_chain;
bool found = false;
for (method_chain = meth_var_names_chain;
method_chain;
method_chain = TREE_CHAIN (method_chain))
{
if (TREE_VALUE (method_chain) == meth)
{
found = true;
break;
}
}
 
if (!found)
warning_at (here, 0, "creating selector for nonexistent method %qE",
meth);
}
 
 
static tree
init_module_descriptor (tree type, long vers)
{
tree expr, ltyp;
location_t loc;
VEC(constructor_elt,gc) *v = NULL;
 
/* No really useful place to point to. */
loc = UNKNOWN_LOCATION;
 
/* version = { 1, ... } */
 
expr = build_int_cst (long_integer_type_node, vers);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
 
/* size = { ..., sizeof (struct _objc_module), ... } */
 
expr = convert (long_integer_type_node,
size_in_bytes (objc_module_template));
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
 
/* Don't provide any file name for security reasons. */
/* name = { ..., "", ... } */
 
expr = add_objc_string (get_identifier (""), class_names);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
 
/* symtab = { ..., _OBJC_SYMBOLS, ... } */
 
ltyp = build_pointer_type (xref_tag (RECORD_TYPE,
get_identifier (UTAG_SYMTAB)));
if (UOBJC_SYMBOLS_decl)
expr = convert (ltyp, build_unary_op (loc,
ADDR_EXPR, UOBJC_SYMBOLS_decl, 0));
else
expr = convert (ltyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
 
return objc_build_constructor (type, v);
}
 
/* Write out the data structures to describe Objective C classes defined.
 
struct _objc_module { ... } _OBJC_MODULE = { ... }; */
 
void
build_module_descriptor (long vers, tree attr)
{
tree decls, *chain = NULL;
 
#ifdef OBJCPLUS
push_lang_context (lang_name_c); /* extern "C" */
#endif
 
objc_module_template = objc_start_struct (get_identifier (UTAG_MODULE));
 
/* long version; */
decls = add_field_decl (long_integer_type_node, "version", &chain);
 
/* long size; */
add_field_decl (long_integer_type_node, "size", &chain);
 
/* char *name; */
add_field_decl (string_type_node, "name", &chain);
 
/* struct _objc_symtab *symtab; */
add_field_decl (build_pointer_type (xref_tag (RECORD_TYPE,
get_identifier (UTAG_SYMTAB))),
"symtab", &chain);
 
objc_finish_struct (objc_module_template, decls);
 
/* Create an instance of "_objc_module". */
UOBJC_MODULES_decl = start_var_decl (objc_module_template,
/* FIXME - why the conditional
if the symbol is the
same. */
flag_next_runtime ? "_OBJC_Module" : "_OBJC_Module");
 
/* This is the root of the metadata for defined classes and categories, it
is referenced by the runtime and, therefore, needed. */
DECL_PRESERVE_P (UOBJC_MODULES_decl) = 1;
 
/* Allow the runtime to mark meta-data such that it can be assigned to target
specific sections by the back-end. */
if (attr)
DECL_ATTRIBUTES (UOBJC_MODULES_decl) = attr;
 
finish_var_decl (UOBJC_MODULES_decl,
init_module_descriptor (TREE_TYPE (UOBJC_MODULES_decl),
vers));
 
#ifdef OBJCPLUS
pop_lang_context ();
#endif
}
 
tree
build_ivar_list_initializer (tree type, tree field_decl)
{
VEC(constructor_elt,gc) *inits = NULL;
 
do
{
VEC(constructor_elt,gc) *ivar = NULL;
tree id;
 
/* Set name. */
if (DECL_NAME (field_decl))
CONSTRUCTOR_APPEND_ELT (ivar, NULL_TREE,
add_objc_string (DECL_NAME (field_decl),
meth_var_names));
else
/* Unnamed bit-field ivar (yuck). */
CONSTRUCTOR_APPEND_ELT (ivar, NULL_TREE, build_int_cst (NULL_TREE, 0));
 
/* Set type. */
id = add_objc_string (encode_field_decl (field_decl),
meth_var_types);
CONSTRUCTOR_APPEND_ELT (ivar, NULL_TREE, id);
 
/* Set offset. */
CONSTRUCTOR_APPEND_ELT (ivar, NULL_TREE, byte_position (field_decl));
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE,
objc_build_constructor (type, ivar));
do
field_decl = DECL_CHAIN (field_decl);
while (field_decl && TREE_CODE (field_decl) != FIELD_DECL);
}
while (field_decl);
 
return objc_build_constructor (build_array_type (type, 0), inits);
}
 
/* struct {
int ivar_count;
struct objc_ivar ivar_list[ivar_count];
}; */
 
tree
build_ivar_list_template (tree list_type, int size)
{
tree objc_ivar_list_record;
tree array_type, decls, *chain = NULL;
 
objc_ivar_list_record = objc_start_struct (NULL_TREE);
 
/* int ivar_count; */
decls = add_field_decl (integer_type_node, "ivar_count", &chain);
 
/* struct objc_ivar ivar_list[]; */
array_type = build_sized_array_type (list_type, size);
add_field_decl (array_type, "ivar_list", &chain);
 
objc_finish_struct (objc_ivar_list_record, decls);
 
return objc_ivar_list_record;
}
 
/* struct _objc_ivar {
char *ivar_name;
char *ivar_type;
int ivar_offset;
}; */
 
tree
build_ivar_template (void)
{
tree objc_ivar_id, objc_ivar_record;
tree decls, *chain = NULL;
 
objc_ivar_id = get_identifier (UTAG_IVAR);
objc_ivar_record = objc_start_struct (objc_ivar_id);
 
/* char *ivar_name; */
decls = add_field_decl (string_type_node, "ivar_name", &chain);
 
/* char *ivar_type; */
add_field_decl (string_type_node, "ivar_type", &chain);
 
/* int ivar_offset; */
add_field_decl (integer_type_node, "ivar_offset", &chain);
 
objc_finish_struct (objc_ivar_record, decls);
 
return objc_ivar_record;
}
 
/* Used by NeXT ABI=0..2 */
void
build_next_selector_translation_table (void)
{
tree chain;
for (chain = sel_ref_chain; chain; chain = TREE_CHAIN (chain))
{
tree expr;
tree decl = TREE_PURPOSE (chain);
if (warn_selector)
{
location_t loc;
if (decl)
loc = DECL_SOURCE_LOCATION (decl);
else
loc = UNKNOWN_LOCATION;
diagnose_missing_method (TREE_VALUE (chain), loc);
}
 
expr = build_selector (TREE_VALUE (chain));
 
if (decl)
{
/* Entries of this form are used for references to methods.
The runtime re-writes these on start-up, but the compiler can't see
that and optimizes it away unless we force it. */
DECL_PRESERVE_P (decl) = 1;
finish_var_decl (decl, expr);
}
}
}
 
void
generate_protocol_references (tree plist)
{
tree lproto;
 
/* Forward declare protocols referenced. */
for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto))
{
tree proto = TREE_VALUE (lproto);
 
if (TREE_CODE (proto) == PROTOCOL_INTERFACE_TYPE
&& PROTOCOL_NAME (proto))
{
if (! PROTOCOL_FORWARD_DECL (proto))
PROTOCOL_FORWARD_DECL (proto) = (*runtime.protocol_decl) (proto);
 
if (PROTOCOL_LIST (proto))
generate_protocol_references (PROTOCOL_LIST (proto));
}
}
}
 
/* --- new routines --- */
 
/* Output all strings. */
 
/* FIXME: don't use global vars for all this... */
 
/* This emits all the meta-data string tables (and finalizes each var
as it goes). */
void
generate_strings (void)
{
tree chain, string_expr;
tree string, decl; /* , type;*/
 
for (chain = class_names_chain; chain; chain = TREE_CHAIN (chain))
{
string = TREE_VALUE (chain);
decl = TREE_PURPOSE (chain);
string_expr = my_build_string (IDENTIFIER_LENGTH (string) + 1,
IDENTIFIER_POINTER (string));
finish_var_decl (decl, string_expr);
}
 
for (chain = meth_var_names_chain; chain; chain = TREE_CHAIN (chain))
{
string = TREE_VALUE (chain);
decl = TREE_PURPOSE (chain);
string_expr = my_build_string (IDENTIFIER_LENGTH (string) + 1,
IDENTIFIER_POINTER (string));
finish_var_decl (decl, string_expr);
}
 
for (chain = meth_var_types_chain; chain; chain = TREE_CHAIN (chain))
{
string = TREE_VALUE (chain);
decl = TREE_PURPOSE (chain);
string_expr = my_build_string (IDENTIFIER_LENGTH (string) + 1,
IDENTIFIER_POINTER (string));
finish_var_decl (decl, string_expr);
}
 
for (chain = prop_names_attr_chain; chain; chain = TREE_CHAIN (chain))
{
string = TREE_VALUE (chain);
decl = TREE_PURPOSE (chain);
string_expr = my_build_string (IDENTIFIER_LENGTH (string) + 1,
IDENTIFIER_POINTER (string));
finish_var_decl (decl, string_expr);
}
}
 
#include "gt-objc-objc-runtime-shared-support.h"
/gcc/objc/Make-lang.in
0,0 → 1,218
# Top level -*- makefile -*- fragment for GNU Objective-C
# Copyright (C) 1997, 1998, 2000, 2001, 2002, 2003, 2004, 2005, 2007,
# 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
 
#This file is part of GCC.
 
#GCC is free software; you can redistribute it and/or modify
#it under the terms of the GNU General Public License as published by
#the Free Software Foundation; either version 3, or (at your option)
#any later version.
 
#GCC is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
#GNU General Public License for more details.
 
# You should have received a copy of the GNU General Public License
# along with GCC; see the file COPYING3. If not see
# <http://www.gnu.org/licenses/>.
 
 
# This file provides the language dependent support in the main Makefile.
# Each language makefile fragment must provide the following targets:
#
# foo.all.cross, foo.start.encap, foo.rest.encap,
# foo.install-common, foo.install-man, foo.install-info, foo.install-pdf,
# foo.install-html, foo.info, foo.dvi, foo.pdf, foo.html, foo.uninstall,
# foo.mostlyclean, foo.clean, foo.distclean,
# foo.maintainer-clean, foo.stage1, foo.stage2, foo.stage3, foo.stage4
#
# where `foo' is the name of the language.
#
# It should also provide rules for:
#
# - making any compiler driver (eg: g++)
# - the compiler proper (eg: cc1plus)
# - define the names for selecting the language in LANGUAGES.
 
#
# Define the names for selecting Objective-C in LANGUAGES.
objc: cc1obj$(exeext)
 
# Tell GNU make to ignore these if they exist.
.PHONY: objc
 
START_HDRS = $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(TREE_H) $(C_TREE_H) \
c-lang.h langhooks.h c-family/c-objc.h objc/objc-act.h
 
# Use maximal warnings for this front end.
objc-warn = $(STRICT_WARN)
 
# Language-specific object files for Objective C.
OBJC_OBJS = objc/objc-lang.o objc/objc-act.o \
objc/objc-runtime-shared-support.o \
objc/objc-gnu-runtime-abi-01.o \
objc/objc-next-runtime-abi-01.o \
objc/objc-next-runtime-abi-02.o \
objc/objc-encoding.o \
objc/objc-map.o
 
objc_OBJS = $(OBJC_OBJS) cc1obj-checksum.o
 
cc1obj-checksum.c : build/genchecksum$(build_exeext) checksum-options \
$(OBJC_OBJS) $(C_AND_OBJC_OBJS) $(BACKEND) $(LIBDEPS)
build/genchecksum$(build_exeext) $(OBJC_OBJS) $(C_AND_OBJC_OBJS) \
$(BACKEND) $(LIBDEPS) checksum-options > cc1obj-checksum.c.tmp && \
$(srcdir)/../move-if-change cc1obj-checksum.c.tmp cc1obj-checksum.c
 
cc1obj-checksum.o : cc1obj-checksum.c $(CONFIG_H) $(SYSTEM_H)
 
cc1obj$(exeext): $(OBJC_OBJS) $(C_AND_OBJC_OBJS) cc1obj-checksum.o $(BACKEND) $(LIBDEPS)
+$(LINKER) $(ALL_LINKERFLAGS) $(LDFLAGS) -o $@ \
$(OBJC_OBJS) $(C_AND_OBJC_OBJS) cc1obj-checksum.o \
$(BACKEND) $(LIBS) $(BACKENDLIBS)
 
# Objective C language specific files.
 
# When editing, please keep the objc/ header dependencies in
# alphabetical order, and try to use a similar logical order for the
# other files between the different targets.
 
objc/objc-lang.o : objc/objc-lang.c \
$(START_HDRS) \
$(GGC_H) \
$(LANGHOOKS_DEF_H) $(C_COMMON_H) gtype-objc.h \
c-objc-common.h
 
objc/objc-runtime-shared-support.o : objc/objc-runtime-shared-support.c \
gt-objc-objc-runtime-shared-support.h \
$(START_HDRS) \
$(GGC_H) $(DIAGNOSTIC_CORE_H) $(FLAGS_H) input.h \
objc/objc-encoding.h \
objc/objc-next-metadata-tags.h \
objc/objc-runtime-shared-support.h
 
objc/objc-gnu-runtime-abi-01.o: objc/objc-gnu-runtime-abi-01.c \
gt-objc-objc-gnu-runtime-abi-01.h \
$(START_HDRS) \
$(GGC_H) $(DIAGNOSTIC_CORE_H) $(FLAGS_H) input.h \
toplev.h \
objc/objc-encoding.h \
objc/objc-runtime-hooks.h \
objc/objc-runtime-shared-support.h
 
objc/objc-next-runtime-abi-01.o: objc/objc-next-runtime-abi-01.c \
gt-objc-objc-next-runtime-abi-01.h \
$(START_HDRS) \
$(GGC_H) $(DIAGNOSTIC_CORE_H) $(FLAGS_H) input.h \
$(TARGET_H) output.h \
objc/objc-encoding.h \
objc/objc-next-metadata-tags.h \
objc/objc-runtime-hooks.h \
objc/objc-runtime-shared-support.h
 
objc/objc-next-runtime-abi-02.o: objc/objc-next-runtime-abi-02.c \
gt-objc-objc-next-runtime-abi-02.h \
$(START_HDRS) \
$(GGC_H) $(DIAGNOSTIC_CORE_H) $(FLAGS_H) input.h \
$(TARGET_H) \
objc/objc-encoding.h \
objc/objc-next-metadata-tags.h \
objc/objc-runtime-hooks.h \
objc/objc-runtime-shared-support.h
 
objc/objc-act.o : objc/objc-act.c \
gt-objc-objc-act.h \
$(START_HDRS) \
$(GGC_H) $(DIAGNOSTIC_CORE_H) $(FLAGS_H) input.h \
toplev.h $(FUNCTION_H) output.h debug.h $(LANGHOOKS_DEF_H) \
$(HASHTAB_H) $(GIMPLE_H) \
$(C_PRAGMA_H) $(C_TARGET_H) \
objc/objc-encoding.h \
objc/objc-map.h \
objc/objc-runtime-hooks.h \
objc/objc-runtime-shared-support.h
 
objc/objc-encoding.o : objc/objc-encoding.c \
$(START_HDRS) \
$(GGC_H) $(DIAGNOSTIC_CORE_H) $(FLAGS_H) input.h \
$(OBSTACK_H) \
objc/objc-encoding.h \
objc/objc-runtime-shared-support.h
 
objc/objc-map.o : objc/objc-map.c \
$(START_HDRS) \
$(GGC_H) $(DIAGNOSTIC_CORE_H) $(FLAGS_H) input.h \
$(OBSTACK_H) \
objc/objc-map.h
 
objc.srcextra:
 
#
# Build hooks:
 
objc.all.cross:
objc.start.encap:
objc.rest.encap:
objc.info:
objc.install-info:
objc.dvi:
objc.pdf:
objc.install-pdf:
objc.html:
objc.install-html:
objc.man:
objc.srcinfo:
objc.srcman:
objc.install-plugin:
 
objc.tags: force
cd $(srcdir)/objc; etags -o TAGS.sub *.c *.h; \
etags --include TAGS.sub --include ../TAGS.sub
 
lang_checks += check-objc
 
# The following allows you to do 'make check-objc -j2'. The
# execute.exp tests will be run in parallel with all the other ones.
lang_checks_parallelized += check-objc
check_objc_parallelize = gnu-encoding.exp execute.exp exceptions.exp
 
#
# Install hooks:
# cc1obj is installed elsewhere as part of $(COMPILERS).
 
objc.install-common:
 
objc.install-man:
 
objc.uninstall:
#
# Clean hooks:
# A lot of the ancillary files are deleted by the main makefile.
# We just have to delete files specific to us.
objc.mostlyclean:
-rm -f objc/*$(objext) objc/xforward objc/fflags
-rm -f objc/*$(coverageexts)
objc.clean: objc.mostlyclean
-rm -rf objc-headers
objc.distclean:
-rm -f objc/Makefile objc/Make-host objc/Make-target
-rm -f objc/config.status objc/config.cache
objc.maintainer-clean:
 
#
# Stage hooks:
 
objc.stage1: stage1-start
-mv objc/*$(objext) stage1/objc
objc.stage2: stage2-start
-mv objc/*$(objext) stage2/objc
objc.stage3: stage3-start
-mv objc/*$(objext) stage3/objc
objc.stage4: stage4-start
-mv objc/*$(objext) stage4/objc
objc.stageprofile: stageprofile-start
-mv objc/*$(objext) stageprofile/objc
objc.stagefeedback: stagefeedback-start
-mv objc/*$(objext) stagefeedback/objc
/gcc/objc/objc-next-runtime-abi-01.c
0,0 → 1,2985
/* Next Runtime (ABI-0/1) private.
Copyright (C) 2011 Free Software Foundation, Inc.
Contributed by Iain Sandoe (split from objc-act.c)
 
This file is part of GCC.
 
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
 
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
 
/* This implements the original NeXT ABI (0) used for m32 code and
indicated by module version 6. It also implements the small number
of additions made for properties and optional protocol methods as
ABI=1 (module version 7). */
 
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "tree.h"
 
#ifdef OBJCPLUS
#include "cp-tree.h"
#else
#include "c-tree.h"
#include "c-lang.h"
#endif
#include "langhooks.h"
#include "c-family/c-objc.h"
#include "objc-act.h"
 
/* When building Objective-C++, we are not linking against the C
front-end and so need to replicate the C tree-construction
functions in some way. */
#ifdef OBJCPLUS
#define OBJCP_REMAP_FUNCTIONS
#include "objcp-decl.h"
#endif /* OBJCPLUS */
 
#include "ggc.h"
#include "target.h"
#include "output.h"
#include "tree-iterator.h"
 
#include "objc-runtime-hooks.h"
#include "objc-runtime-shared-support.h"
#include "objc-encoding.h"
 
/* NeXT ABI 0 and 1 private definitions. */
#define DEF_CONSTANT_STRING_CLASS_NAME "NSConstantString"
 
#define TAG_GETCLASS "objc_getClass"
#define TAG_GETMETACLASS "objc_getMetaClass"
 
#define TAG_MSGSEND "objc_msgSend"
#define TAG_MSGSENDSUPER "objc_msgSendSuper"
#define TAG_MSGSEND_STRET "objc_msgSend_stret"
#define TAG_MSGSENDSUPER_STRET "objc_msgSendSuper_stret"
 
/* NeXT-specific tags. */
 
#define TAG_MSGSEND_NONNIL "objc_msgSendNonNil"
#define TAG_MSGSEND_NONNIL_STRET "objc_msgSendNonNil_stret"
#define TAG_EXCEPTIONEXTRACT "objc_exception_extract"
#define TAG_EXCEPTIONTRYENTER "objc_exception_try_enter"
#define TAG_EXCEPTIONTRYEXIT "objc_exception_try_exit"
#define TAG_EXCEPTIONMATCH "objc_exception_match"
#define TAG_SETJMP "_setjmp"
 
#define TAG_ASSIGNIVAR "objc_assign_ivar"
#define TAG_ASSIGNGLOBAL "objc_assign_global"
#define TAG_ASSIGNSTRONGCAST "objc_assign_strongCast"
 
/* Branch entry points. All that matters here are the addresses;
functions with these names do not really exist in libobjc. */
 
#define TAG_MSGSEND_FAST "objc_msgSend_Fast"
#define TAG_ASSIGNIVAR_FAST "objc_assign_ivar_Fast"
 
/* The version identifies which language generation and runtime the
module (file) was compiled for, and is recorded in the module
descriptor. */
#define OBJC_VERSION (flag_objc_abi >= 1 ? 7 : 6)
 
#define UTAG_CLASS_EXT "_objc_class_ext"
#define UTAG_PROPERTY_LIST "_prop_list_t"
#define UTAG_PROTOCOL_EXT "_objc_protocol_extension"
 
#define CLS_HAS_CXX_STRUCTORS 0x2000L
 
/* rt_trees identifiers - shared between NeXT implementations. These
allow the FE to tag meta-data in a manner that survives LTO and can
be used when the runtime requires that certain meta-data items
appear in particular named sections. */
 
#include "objc-next-metadata-tags.h"
extern GTY(()) tree objc_rt_trees[OCTI_RT_META_MAX];
 
static void next_runtime_01_initialize (void);
 
static tree next_runtime_abi_01_super_superclassfield_id (void);
 
static tree next_runtime_abi_01_class_decl (tree);
static tree next_runtime_abi_01_metaclass_decl (tree);
static tree next_runtime_abi_01_category_decl (tree);
static tree next_runtime_abi_01_protocol_decl (tree);
static tree next_runtime_abi_01_string_decl (tree, const char *, string_section);
 
static tree next_runtime_abi_01_get_class_reference (tree);
static tree next_runtime_abi_01_build_selector_reference (location_t, tree, tree);
static tree next_runtime_abi_01_get_protocol_reference (location_t, tree);
static tree next_runtime_abi_01_build_ivar_ref (location_t, tree, tree);
static tree next_runtime_abi_01_get_class_super_ref (location_t, struct imp_entry *, bool);
static tree next_runtime_abi_01_get_category_super_ref (location_t, struct imp_entry *, bool);
 
static tree next_runtime_abi_01_receiver_is_class_object (tree);
static void next_runtime_abi_01_get_arg_type_list_base (VEC(tree,gc) **, tree,
int, int);
static tree next_runtime_abi_01_build_objc_method_call (location_t, tree, tree,
tree, tree, tree, int);
static bool next_runtime_abi_01_setup_const_string_class_decl (void);
static tree next_runtime_abi_01_build_const_string_constructor (location_t, tree, int);
 
static void objc_generate_v1_next_metadata (void);
 
static void build_next_objc_exception_stuff (void);
static tree objc_eh_runtime_type (tree type);
static tree objc_eh_personality (void);
static tree build_throw_stmt (location_t, tree, bool);
static tree objc_build_exc_ptr (struct objc_try_context **);
static tree begin_catch (struct objc_try_context **, tree, tree, tree, bool);
static void finish_catch (struct objc_try_context **, tree);
static tree finish_try_stmt (struct objc_try_context **);
 
bool
objc_next_runtime_abi_01_init (objc_runtime_hooks *rthooks)
{
if (flag_objc_exceptions
&& !flag_objc_sjlj_exceptions)
{
warning_at (UNKNOWN_LOCATION, OPT_Wall,
"%<-fobjc-sjlj-exceptions%> is the only supported exceptions "
"system for %<-fnext-runtime%> with %<-fobjc-abi-version%> < 2");
}
 
rthooks->initialize = next_runtime_01_initialize;
rthooks->default_constant_string_class_name = DEF_CONSTANT_STRING_CLASS_NAME;
rthooks->tag_getclass = TAG_GETCLASS;
rthooks->super_superclassfield_ident = next_runtime_abi_01_super_superclassfield_id;
 
rthooks->class_decl = next_runtime_abi_01_class_decl;
rthooks->metaclass_decl = next_runtime_abi_01_metaclass_decl;
rthooks->category_decl = next_runtime_abi_01_category_decl;
rthooks->protocol_decl = next_runtime_abi_01_protocol_decl;
rthooks->string_decl = next_runtime_abi_01_string_decl;
 
rthooks->get_class_reference = next_runtime_abi_01_get_class_reference;
rthooks->build_selector_reference = next_runtime_abi_01_build_selector_reference;
rthooks->get_protocol_reference = next_runtime_abi_01_get_protocol_reference;
rthooks->build_ivar_reference = next_runtime_abi_01_build_ivar_ref;
rthooks->get_class_super_ref = next_runtime_abi_01_get_class_super_ref;
rthooks->get_category_super_ref = next_runtime_abi_01_get_category_super_ref;
 
rthooks->receiver_is_class_object = next_runtime_abi_01_receiver_is_class_object;
rthooks->get_arg_type_list_base = next_runtime_abi_01_get_arg_type_list_base;
rthooks->build_objc_method_call = next_runtime_abi_01_build_objc_method_call;
 
rthooks->setup_const_string_class_decl =
next_runtime_abi_01_setup_const_string_class_decl;
rthooks->build_const_string_constructor =
next_runtime_abi_01_build_const_string_constructor;
 
rthooks->build_throw_stmt = build_throw_stmt;
rthooks->build_exc_ptr = objc_build_exc_ptr;
rthooks->begin_catch = begin_catch;
rthooks->finish_catch = finish_catch;
rthooks->finish_try_stmt = finish_try_stmt;
 
rthooks->generate_metadata = objc_generate_v1_next_metadata;
return true;
}
 
/* We need a way to convey what kind of meta-data are represented by a
given variable, since each type is expected (by the runtime) to be
found in a specific named section. The solution must be usable
with LTO.
 
The scheme used for NeXT ABI 0/1 (partial matching of variable
names) is not satisfactory for LTO & ABI-2. We now tag ObjC
meta-data with identification attributes in the front end. The
back-end may choose to act on these as it requires. */
 
static void
next_runtime_abi_01_init_metadata_attributes (void)
{
if (!objc_meta)
objc_meta = get_identifier ("OBJC1META");
 
if (!meta_base)
meta_base = get_identifier ("V1_BASE");
 
meta_class = get_identifier ("V1_CLAS");
meta_metaclass = get_identifier ("V1_META");
meta_category = get_identifier ("V1_CATG");
meta_protocol = get_identifier ("V1_PROT");
 
meta_clac_vars = get_identifier ("V1_CLCV");
meta_clai_vars = get_identifier ("V1_CLIV");
 
meta_clac_meth = get_identifier ("V1_CLCM");
meta_clai_meth = get_identifier ("V1_CLIM");
meta_catc_meth = get_identifier ("V1_CACM");
meta_cati_meth = get_identifier ("V1_CAIM");
meta_proto_cls_meth = get_identifier ("V1_PCLM");
meta_proto_nst_meth = get_identifier ("V1_PNSM");
 
meta_clas_prot = get_identifier ("V1_CLPR");
meta_catg_prot = get_identifier ("V1_CAPR");
 
meta_class_reference = get_identifier ("V1_CLRF");
meta_proto_ref = get_identifier ("V1_PRFS");
meta_sel_refs = get_identifier ("V1_SRFS");
 
meta_class_name = get_identifier ("V1_CLSN");
meta_meth_name = get_identifier ("V1_METN");
meta_meth_type = get_identifier ("V1_METT");
meta_prop_name_attr = get_identifier ("V1_STRG");
 
meta_modules = get_identifier ("V1_MODU");
meta_symtab = get_identifier ("V1_SYMT");
meta_info = get_identifier ("V1_INFO");
 
meta_proplist = get_identifier ("V1_PLST");
meta_protocol_extension = get_identifier ("V1_PEXT");
meta_class_extension = get_identifier ("V1_CEXT");
 
meta_const_str = get_identifier ("V1_CSTR");
}
 
static void build_v1_class_template (void);
static void build_v1_category_template (void);
static void build_v1_protocol_template (void);
 
static void next_runtime_01_initialize (void)
{
tree type;
 
#ifdef OBJCPLUS
/* For all NeXT objc ABIs -fobjc-call-cxx-cdtors is on by
default. */
if (!global_options_set.x_flag_objc_call_cxx_cdtors)
global_options.x_flag_objc_call_cxx_cdtors = 1;
#endif
 
/* Set up attributes to be attached to the meta-data so that they
will be placed in the correct sections. */
next_runtime_abi_01_init_metadata_attributes ();
 
if (flag_objc_abi >= 1)
objc_prop_list_ptr = build_pointer_type (xref_tag (RECORD_TYPE,
get_identifier ("_prop_list_t")));
 
/* Declare type of selector-objects that represent an operation
name. */
/* `struct objc_selector *' */
objc_selector_type = build_pointer_type (xref_tag (RECORD_TYPE,
get_identifier (TAG_SELECTOR)));
 
build_v1_class_template ();
build_super_template ();
build_v1_protocol_template ();
build_v1_category_template ();
 
/* NB: In order to call one of the ..._stret (struct-returning)
functions, the function *MUST* first be cast to a signature that
corresponds to the actual ObjC method being invoked. This is
what is done by the build_objc_method_call() routine below. */
 
/* id objc_msgSend (id, SEL, ...); */
/* id objc_msgSendNonNil (id, SEL, ...); */
/* id objc_msgSend_stret (id, SEL, ...); */
/* id objc_msgSendNonNil_stret (id, SEL, ...); */
type = build_varargs_function_type_list (objc_object_type,
objc_object_type,
objc_selector_type,
NULL_TREE);
 
umsg_decl = add_builtin_function (TAG_MSGSEND,
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
 
umsg_nonnil_decl = add_builtin_function (TAG_MSGSEND_NONNIL,
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
 
umsg_stret_decl = add_builtin_function (TAG_MSGSEND_STRET,
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
 
umsg_nonnil_stret_decl = add_builtin_function (TAG_MSGSEND_NONNIL_STRET,
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
 
/* These can throw, because the function that gets called can throw
in Obj-C++, or could itself call something that can throw even in
Obj-C. */
TREE_NOTHROW (umsg_decl) = 0;
TREE_NOTHROW (umsg_nonnil_decl) = 0;
TREE_NOTHROW (umsg_stret_decl) = 0;
TREE_NOTHROW (umsg_nonnil_stret_decl) = 0;
 
/* id objc_msgSend_Fast (id, SEL, ...)
__attribute__ ((hard_coded_address (OFFS_MSGSEND_FAST))); */
#ifdef OFFS_MSGSEND_FAST
umsg_fast_decl = add_builtin_function (TAG_MSGSEND_FAST,
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
TREE_NOTHROW (umsg_fast_decl) = 0;
DECL_ATTRIBUTES (umsg_fast_decl)
= tree_cons (get_identifier ("hard_coded_address"),
build_int_cst (NULL_TREE, OFFS_MSGSEND_FAST),
NULL_TREE);
#else
/* No direct dispatch available. */
umsg_fast_decl = umsg_decl;
#endif
 
/* id objc_msgSendSuper (struct objc_super *, SEL, ...); */
/* id objc_msgSendSuper_stret (struct objc_super *, SEL, ...); */
type = build_varargs_function_type_list (objc_object_type,
objc_super_type,
objc_selector_type,
NULL_TREE);
umsg_super_decl = add_builtin_function (TAG_MSGSENDSUPER,
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
umsg_super_stret_decl = add_builtin_function (TAG_MSGSENDSUPER_STRET,
type, 0, NOT_BUILT_IN, 0,
NULL_TREE);
TREE_NOTHROW (umsg_super_decl) = 0;
TREE_NOTHROW (umsg_super_stret_decl) = 0;
 
type = build_function_type_list (objc_object_type,
const_string_type_node,
NULL_TREE);
 
/* id objc_getClass (const char *); */
objc_get_class_decl
= add_builtin_function (TAG_GETCLASS, type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
 
/* id objc_getMetaClass (const char *); */
objc_get_meta_class_decl
= add_builtin_function (TAG_GETMETACLASS, type, 0, NOT_BUILT_IN, NULL, NULL_TREE);
 
/* This is the type of all of the following functions
objc_copyStruct(). */
type = build_function_type_list (void_type_node,
ptr_type_node,
const_ptr_type_node,
ptrdiff_type_node,
boolean_type_node,
boolean_type_node,
NULL_TREE);
/* Declare the following function:
void
objc_copyStruct (void *destination, const void *source,
ptrdiff_t size, BOOL is_atomic, BOOL has_strong); */
objc_copyStruct_decl = add_builtin_function ("objc_copyStruct",
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
TREE_NOTHROW (objc_copyStruct_decl) = 0;
objc_getPropertyStruct_decl = NULL_TREE;
objc_setPropertyStruct_decl = NULL_TREE;
 
build_next_objc_exception_stuff ();
if (flag_objc_exceptions && !flag_objc_sjlj_exceptions)
using_eh_for_cleanups ();
lang_hooks.eh_runtime_type = objc_eh_runtime_type;
lang_hooks.eh_personality = objc_eh_personality;
}
 
/* --- templates --- */
 
/* struct _objc_class
{
struct _objc_class *isa;
struct _objc_class *super_class;
char *name;
long version;
long info;
long instance_size;
struct _objc_ivar_list *ivars;
struct _objc_method_list *methods;
struct objc_cache *cache;
struct _objc_protocol_list *protocols;
#if ABI=1
const char *ivar_layout;
struct _objc_class_ext *ext;
#else
void *sel_id;
void *gc_object_type;
#endif
}; */
 
/* The 'sel_id' & 'gc_object_type' fields are not used by the NeXT
runtime. We generate them for ABI==0 to maintain backward binary
compatibility. */
 
static void
build_v1_class_template (void)
{
tree ptype, decls, *chain = NULL;
 
objc_class_template = objc_start_struct (get_identifier (UTAG_CLASS));
 
/* struct _objc_class *isa; */
decls = add_field_decl (build_pointer_type (objc_class_template),
"isa", &chain);
 
/* struct _objc_class *super_class; */
add_field_decl (build_pointer_type (objc_class_template),
"super_class", &chain);
 
/* char *name; */
add_field_decl (string_type_node, "name", &chain);
 
/* long version; */
add_field_decl (long_integer_type_node, "version", &chain);
 
/* long info; */
add_field_decl (long_integer_type_node, "info", &chain);
 
/* long instance_size; */
add_field_decl (long_integer_type_node, "instance_size", &chain);
 
/* struct _objc_ivar_list *ivars; */
add_field_decl (objc_ivar_list_ptr,"ivars", &chain);
 
/* struct _objc_method_list *methods; */
add_field_decl (objc_method_list_ptr, "methods", &chain);
 
/* struct objc_cache *cache; */
ptype = build_pointer_type (xref_tag (RECORD_TYPE,
get_identifier ("objc_cache")));
add_field_decl (ptype, "cache", &chain);
 
/* struct _objc_protocol **protocol_list; */
ptype = build_pointer_type (build_pointer_type
(xref_tag (RECORD_TYPE,
get_identifier (UTAG_PROTOCOL))));
add_field_decl (ptype, "protocol_list", &chain);
 
if (flag_objc_abi >= 1)
{
/* const char *ivar_layout; */
add_field_decl (const_string_type_node, "ivar_layout", &chain);
 
/* struct _objc_class_ext *ext; */
ptype = build_pointer_type (xref_tag (RECORD_TYPE,
get_identifier (UTAG_CLASS_EXT)));
add_field_decl (ptype, "ext", &chain);
}
else
{
/* void *sel_id; */
add_field_decl (build_pointer_type (void_type_node), "sel_id", &chain);
/* void *gc_object_type; */
add_field_decl (build_pointer_type (void_type_node), "gc_object_type",
&chain);
}
 
objc_finish_struct (objc_class_template, decls);
}
 
/* struct _objc_category
{
char *category_name;
char *class_name;
struct _objc_method_list *instance_methods;
struct _objc_method_list *class_methods;
struct _objc_protocol_list *protocols;
#if ABI=1
uint32_t size; // sizeof (struct _objc_category)
struct _objc_property_list *instance_properties; // category's own @property decl.
#endif
}; */
 
static void
build_v1_category_template (void)
{
tree ptype, decls, *chain = NULL;
 
objc_category_template = objc_start_struct (get_identifier (UTAG_CATEGORY));
 
/* char *category_name; */
decls = add_field_decl (string_type_node, "category_name", &chain);
 
/* char *class_name; */
add_field_decl (string_type_node, "class_name", &chain);
 
/* struct _objc_method_list *instance_methods; */
add_field_decl (objc_method_list_ptr, "instance_methods", &chain);
 
/* struct _objc_method_list *class_methods; */
add_field_decl (objc_method_list_ptr, "class_methods", &chain);
 
/* struct _objc_protocol **protocol_list; */
ptype = build_pointer_type (build_pointer_type (objc_protocol_template));
add_field_decl (ptype, "protocol_list", &chain);
 
if (flag_objc_abi >= 1)
{
add_field_decl (integer_type_node, "size", &chain);
 
/* struct _objc_property_list *instance_properties;
This field describes a category's @property declarations.
Properties from inherited protocols are not included. */
ptype = build_pointer_type (xref_tag (RECORD_TYPE,
get_identifier (UTAG_PROPERTY_LIST)));
add_field_decl (ptype, "instance_properties", &chain);
}
objc_finish_struct (objc_category_template, decls);
}
 
/* Begin code generation for protocols...
Modified for ObjC #1 extensions. */
 
/* struct _objc_protocol
{
#if ABI=1
struct _objc_protocol_extension *isa;
#else
struct _objc_class *isa;
#endif
 
char *protocol_name;
struct _objc_protocol **protocol_list;
struct _objc__method_prototype_list *instance_methods;
struct _objc__method_prototype_list *class_methods;
}; */
 
static void
build_v1_protocol_template (void)
{
tree ptype, decls, *chain = NULL;
 
objc_protocol_template = objc_start_struct (get_identifier (UTAG_PROTOCOL));
 
if (flag_objc_abi >= 1)
/* struct _objc_protocol_extension *isa; */
ptype = build_pointer_type (xref_tag (RECORD_TYPE,
get_identifier (UTAG_PROTOCOL_EXT)));
else
/* struct _objc_class *isa; */
ptype = build_pointer_type (xref_tag (RECORD_TYPE,
get_identifier (UTAG_CLASS)));
 
decls = add_field_decl (ptype, "isa", &chain);
 
/* char *protocol_name; */
add_field_decl (string_type_node, "protocol_name", &chain);
 
/* struct _objc_protocol **protocol_list; */
ptype = build_pointer_type (build_pointer_type (objc_protocol_template));
add_field_decl (ptype, "protocol_list", &chain);
 
/* struct _objc__method_prototype_list *instance_methods; */
add_field_decl (objc_method_proto_list_ptr, "instance_methods", &chain);
 
/* struct _objc__method_prototype_list *class_methods; */
add_field_decl (objc_method_proto_list_ptr, "class_methods", &chain);
 
objc_finish_struct (objc_protocol_template, decls);
}
 
/* --- names, decls identifers --- */
 
static tree
next_runtime_abi_01_super_superclassfield_id (void)
{
if (!super_superclassfield_id)
super_superclassfield_id = get_identifier ("super_class");
return super_superclassfield_id;
}
 
static tree
next_runtime_abi_01_class_decl (tree klass)
{
tree decl;
char buf[BUFSIZE];
snprintf (buf, BUFSIZE, "_OBJC_Class_%s",
IDENTIFIER_POINTER (CLASS_NAME (klass)));
decl = start_var_decl (objc_class_template, buf);
OBJCMETA (decl, objc_meta, meta_class);
return decl;
}
 
static tree
next_runtime_abi_01_metaclass_decl (tree klass)
{
tree decl;
char buf[BUFSIZE];
snprintf (buf, BUFSIZE, "_OBJC_MetaClass_%s",
IDENTIFIER_POINTER (CLASS_NAME (klass)));
decl = start_var_decl (objc_class_template, buf);
OBJCMETA (decl, objc_meta, meta_metaclass);
return decl;
}
 
static tree
next_runtime_abi_01_category_decl (tree klass)
{
tree decl;
char buf[BUFSIZE];
snprintf (buf, BUFSIZE, "_OBJC_Category_%s_on_%s",
IDENTIFIER_POINTER (CLASS_SUPER_NAME (klass)),
IDENTIFIER_POINTER (CLASS_NAME (klass)));
decl = start_var_decl (objc_category_template, buf);
OBJCMETA (decl, objc_meta, meta_category);
return decl;
}
 
static tree
next_runtime_abi_01_protocol_decl (tree p)
{
tree decl;
char buf[BUFSIZE];
 
/* static struct _objc_protocol _OBJC_Protocol_<mumble>; */
 
snprintf (buf, BUFSIZE, "_OBJC_Protocol_%s",
IDENTIFIER_POINTER (PROTOCOL_NAME (p)));
decl = start_var_decl (objc_protocol_template, buf);
OBJCMETA (decl, objc_meta, meta_protocol);
return decl;
}
 
static tree
next_runtime_abi_01_string_decl (tree type, const char *name, string_section where)
{
tree var = start_var_decl (type, name);
switch (where)
{
case class_names:
OBJCMETA (var, objc_meta, meta_class_name);
break;
case meth_var_names:
OBJCMETA (var, objc_meta, meta_meth_name);
break;
case meth_var_types:
OBJCMETA (var, objc_meta, meta_meth_type);
break;
case prop_names_attr:
OBJCMETA (var, objc_meta, meta_prop_name_attr);
break;
default:
OBJCMETA (var, objc_meta, meta_base);
break;
}
return var;
}
 
/* --- entry --- */
 
static GTY(()) int class_reference_idx;
 
static tree
build_class_reference_decl (void)
{
tree decl;
char buf[BUFSIZE];
 
sprintf (buf, "_OBJC_ClassRefs_%d", class_reference_idx++);
decl = start_var_decl (objc_class_type, buf);
 
return decl;
}
 
static tree
next_runtime_abi_01_get_class_reference (tree ident)
{
if (!flag_zero_link)
{
tree *chain;
tree decl;
 
for (chain = &cls_ref_chain; *chain; chain = &TREE_CHAIN (*chain))
if (TREE_VALUE (*chain) == ident)
{
if (! TREE_PURPOSE (*chain))
TREE_PURPOSE (*chain) = build_class_reference_decl ();
 
return TREE_PURPOSE (*chain);
}
 
decl = build_class_reference_decl ();
*chain = tree_cons (decl, ident, NULL_TREE);
return decl;
}
else
{
tree params;
 
add_class_reference (ident);
 
params = build_tree_list (NULL_TREE,
my_build_string_pointer
(IDENTIFIER_LENGTH (ident) + 1,
IDENTIFIER_POINTER (ident)));
 
return build_function_call (input_location, objc_get_class_decl, params);
}
}
 
/* Used by build_function_type_for_method. Append the types for
receiver & _cmd at the start of a method argument list to ARGTYPES.
CONTEXT is either METHOD_DEF or METHOD_REF, saying whether we are
trying to define a method or call one. SUPERFLAG says this is for a
send to super. METH may be NULL, in the case that there is no
prototype. */
 
static void
next_runtime_abi_01_get_arg_type_list_base (VEC(tree,gc) **argtypes, tree meth,
int context, int superflag)
{
tree receiver_type;
 
if (superflag)
receiver_type = objc_super_type;
else if (context == METHOD_DEF && TREE_CODE (meth) == INSTANCE_METHOD_DECL)
receiver_type = objc_instance_type;
else
receiver_type = objc_object_type;
 
VEC_safe_push (tree, gc, *argtypes, receiver_type);
/* Selector type - will eventually change to `int'. */
VEC_safe_push (tree, gc, *argtypes, objc_selector_type);
}
 
static tree
next_runtime_abi_01_receiver_is_class_object (tree receiver)
{
if (TREE_CODE (receiver) == VAR_DECL
&& IS_CLASS (TREE_TYPE (receiver)))
{
/* The receiver is a variable created by build_class_reference_decl. */
tree chain = cls_ref_chain ;
/* Look up the identifier in the relevant chain. */
for (; chain; chain = TREE_CHAIN (chain))
if (TREE_PURPOSE (chain) == receiver)
return TREE_VALUE (chain);
}
return NULL_TREE;
}
 
static tree
build_selector_reference_decl (tree ident)
{
tree decl;
char *t, buf[BUFSIZE];
 
snprintf (buf, BUFSIZE, "_OBJC_SelRef_%s", IDENTIFIER_POINTER (ident));
t = buf;
while (*t)
{
if (*t==':')
*t = '$'; /* Underscore would clash between foo:bar and foo_bar. */
t++;
}
decl = start_var_decl (objc_selector_type, buf);
OBJCMETA (decl, objc_meta, meta_sel_refs);
return decl;
}
 
static tree
next_runtime_abi_01_build_selector_reference (location_t loc ATTRIBUTE_UNUSED,
tree ident,
tree proto ATTRIBUTE_UNUSED)
{
tree *chain = &sel_ref_chain;
tree expr;
 
while (*chain)
{
if (TREE_VALUE (*chain) == ident)
return TREE_PURPOSE (*chain);
 
chain = &TREE_CHAIN (*chain);
}
 
expr = build_selector_reference_decl (ident);
 
*chain = tree_cons (expr, ident, NULL_TREE);
 
return expr;
}
 
/* Build a tree expression to send OBJECT the operation SELECTOR,
looking up the method on object LOOKUP_OBJECT (often same as OBJECT),
assuming the method has prototype METHOD_PROTOTYPE.
(That is an INSTANCE_METHOD_DECL or CLASS_METHOD_DECL.)
LOC is the location of the expression to build.
Use METHOD_PARAMS as list of args to pass to the method.
If SUPER_FLAG is nonzero, we look up the superclass's method. */
 
static tree
build_objc_method_call (location_t loc, int super_flag, tree method_prototype,
tree lookup_object, tree selector,
tree method_params)
{
tree sender, sender_cast, method, t;
tree rcv_p = (super_flag ? objc_super_type : objc_object_type);
VEC(tree, gc) *parms;
unsigned nparm = (method_params ? list_length (method_params) : 0);
 
/* If a prototype for the method to be called exists, then cast
the sender's return type and arguments to match that of the method.
Otherwise, leave sender as is. */
tree ret_type
= (method_prototype
? TREE_VALUE (TREE_TYPE (method_prototype))
: objc_object_type);
tree ftype = build_function_type_for_method (ret_type, method_prototype,
METHOD_REF, super_flag);
 
if (method_prototype && METHOD_TYPE_ATTRIBUTES (method_prototype))
ftype = build_type_attribute_variant (ftype,
METHOD_TYPE_ATTRIBUTES
(method_prototype));
 
sender_cast = build_pointer_type (ftype);
 
lookup_object = build_c_cast (loc, rcv_p, lookup_object);
 
/* Use SAVE_EXPR to avoid evaluating the receiver twice. */
lookup_object = save_expr (lookup_object);
 
/* Param list + 2 slots for object and selector. */
parms = VEC_alloc (tree, gc, nparm + 2);
 
/* If we are returning a struct in memory, and the address
of that memory location is passed as a hidden first
argument, then change which messenger entry point this
expr will call. NB: Note that sender_cast remains
unchanged (it already has a struct return type). */
if (!targetm.calls.struct_value_rtx (0, 0)
&& (TREE_CODE (ret_type) == RECORD_TYPE
|| TREE_CODE (ret_type) == UNION_TYPE)
&& targetm.calls.return_in_memory (ret_type, 0))
sender = (super_flag ? umsg_super_stret_decl
: flag_nil_receivers ? umsg_stret_decl
: umsg_nonnil_stret_decl);
else
sender = (super_flag ? umsg_super_decl
: (flag_nil_receivers ? (flag_objc_direct_dispatch
? umsg_fast_decl
: umsg_decl)
: umsg_nonnil_decl));
method = build_fold_addr_expr_loc (loc, sender);
 
/* Pass the object to the method. */
VEC_quick_push (tree, parms, lookup_object);
/* Pass the selector to the method. */
VEC_quick_push (tree, parms, selector);
/* Now append the remainder of the parms. */
if (nparm)
for (; method_params; method_params = TREE_CHAIN (method_params))
VEC_quick_push (tree, parms, TREE_VALUE (method_params));
 
/* Build an obj_type_ref, with the correct cast for the method call. */
t = build3 (OBJ_TYPE_REF, sender_cast, method,
lookup_object, size_zero_node);
t = build_function_call_vec (loc, t, parms, NULL);
VEC_free (tree, gc, parms);
return t;
}
 
static tree
next_runtime_abi_01_build_objc_method_call (location_t loc,
tree method_prototype,
tree receiver,
tree rtype ATTRIBUTE_UNUSED,
tree sel_name,
tree method_params,
int super)
{
tree selector = next_runtime_abi_01_build_selector_reference (loc, sel_name,
NULL_TREE);
 
return build_objc_method_call (loc, super, method_prototype,
receiver, selector, method_params);
}
 
static tree
next_runtime_abi_01_get_protocol_reference (location_t loc, tree p)
{
tree expr;
 
if (!PROTOCOL_FORWARD_DECL (p))
PROTOCOL_FORWARD_DECL (p) = next_runtime_abi_01_protocol_decl (p);
 
expr = build_unary_op (loc, ADDR_EXPR, PROTOCOL_FORWARD_DECL (p), 0);
return convert (objc_protocol_type, expr);
}
 
/* For ABI 0/1 and IVAR is just a fixed offset in the class struct. */
 
static tree
next_runtime_abi_01_build_ivar_ref (location_t loc ATTRIBUTE_UNUSED,
tree base, tree id)
{
return objc_build_component_ref (base, id);
}
 
/* We build super class references as we need them (but keep them once
built for the sake of efficiency). */
 
static tree
next_runtime_abi_01_get_class_super_ref (location_t loc ATTRIBUTE_UNUSED,
struct imp_entry *imp, bool inst_meth)
{
if (inst_meth)
{
if (!ucls_super_ref)
ucls_super_ref =
objc_build_component_ref (imp->class_decl,
get_identifier ("super_class"));
return ucls_super_ref;
}
else
{
if (!uucls_super_ref)
uucls_super_ref =
objc_build_component_ref (imp->meta_decl,
get_identifier ("super_class"));
return uucls_super_ref;
}
}
 
static tree
next_runtime_abi_01_get_category_super_ref (location_t loc ATTRIBUTE_UNUSED,
struct imp_entry *imp, bool inst_meth)
{
tree super_name = CLASS_SUPER_NAME (imp->imp_template);
tree super_class;
 
if (!flag_zero_link)
{
super_class = objc_get_class_reference (super_name);
 
if (!inst_meth)
 
/* If we are in a class method, we must retrieve the
_metaclass_ for the current class, pointed at by
the class's "isa" pointer. The following assumes that
"isa" is the first ivar in a class (which it must be). */
super_class =
build_indirect_ref (input_location,
build_c_cast (input_location,
build_pointer_type (objc_class_type),
super_class),
RO_UNARY_STAR);
return super_class;
}
 
/* else do it the slow way. */
add_class_reference (super_name);
super_class = (inst_meth ? objc_get_class_decl : objc_get_meta_class_decl);
/* assemble_external (super_class);*/
super_name = my_build_string_pointer (IDENTIFIER_LENGTH (super_name) + 1,
IDENTIFIER_POINTER (super_name));
/* super_class = objc_get{Meta}Class("CLASS_SUPER_NAME"); */
return build_function_call (input_location,
super_class,
build_tree_list (NULL_TREE, super_name));
}
 
static bool
next_runtime_abi_01_setup_const_string_class_decl (void)
{
if (!constant_string_global_id)
{
/* Hopefully, this should not represent a serious limitation. */
char buf[BUFSIZE];
snprintf (buf, BUFSIZE, "_%sClassReference", constant_string_class_name);
constant_string_global_id = get_identifier (buf);
}
 
string_class_decl = lookup_name (constant_string_global_id);
 
return (string_class_decl != NULL_TREE);
}
 
static tree
next_runtime_abi_01_build_const_string_constructor (location_t loc, tree string,
int length)
{
tree constructor, fields, var;
VEC(constructor_elt,gc) *v = NULL;
 
/* NeXT: (NSConstantString *) & ((__builtin_ObjCString) { isa, string, length }) */
fields = TYPE_FIELDS (internal_const_str_type);
CONSTRUCTOR_APPEND_ELT (v, fields,
build_unary_op (loc, ADDR_EXPR, string_class_decl, 0));
 
fields = DECL_CHAIN (fields);
CONSTRUCTOR_APPEND_ELT (v, fields,
build_unary_op (loc, ADDR_EXPR, string, 1));
 
/* ??? check if this should be long. */
fields = DECL_CHAIN (fields);
CONSTRUCTOR_APPEND_ELT (v, fields, build_int_cst (NULL_TREE, length));
constructor = objc_build_constructor (internal_const_str_type, v);
 
var = build_decl (input_location, CONST_DECL, NULL, TREE_TYPE (constructor));
DECL_INITIAL (var) = constructor;
TREE_STATIC (var) = 1;
DECL_CONTEXT (var) = NULL;
OBJCMETA (var, objc_meta, meta_const_str);
return var;
}
 
/* --- metadata templates --- */
 
/* This routine builds the following type:
struct _prop_t {
const char * const name; // property name
const char * const attributes; // comma-delimited, encoded,
// property attributes
};
*/
 
static GTY(()) tree objc_v1_property_template;
 
static tree
build_v1_property_template (void)
{
tree prop_record;
tree decls, *chain = NULL;
 
prop_record = objc_start_struct (get_identifier ("_prop_t"));
/* const char * name */
decls = add_field_decl (string_type_node, "name", &chain);
 
/* const char * attribute */
add_field_decl (string_type_node, "attribute", &chain);
 
objc_finish_struct (prop_record, decls);
return prop_record;
}
 
/* Build the following type:
 
struct _objc_protocol_extension
{
uint32_t size; // sizeof (struct _objc_protocol_extension)
struct objc_method_list *optional_instance_methods;
struct objc_method_list *optional_class_methods;
struct objc_prop_list *instance_properties;
}
*/
 
static GTY(()) tree objc_protocol_extension_template;
 
static void
build_v1_objc_protocol_extension_template (void)
{
tree decls, *chain = NULL;
 
objc_protocol_extension_template =
objc_start_struct (get_identifier (UTAG_PROTOCOL_EXT));
 
/* uint32_t size; */
decls = add_field_decl (integer_type_node, "size", &chain);
 
/* struct objc_method_list *optional_instance_methods; */
add_field_decl (objc_method_list_ptr, "optional_instance_methods", &chain);
 
/* struct objc_method_list *optional_class_methods; */
add_field_decl (objc_method_list_ptr, "optional_class_methods", &chain);
 
/* struct objc_prop_list *instance_properties; */
add_field_decl (objc_prop_list_ptr, "instance_properties", &chain);
 
objc_finish_struct (objc_protocol_extension_template, decls);
}
 
/* This routine build following struct type:
struct _objc_class_ext
{
uint32_t size; // sizeof(struct _objc_class_ext)
const char *weak_ivar_layout;
struct _prop_list_t *properties;
}
*/
 
static GTY(()) tree objc_class_ext_template;
 
static void
build_objc_class_ext_template (void)
{
tree ptrt, decls, *chain = NULL;
 
objc_class_ext_template = objc_start_struct (get_identifier (UTAG_CLASS_EXT));
 
/* uint32_t size; */
decls = add_field_decl (integer_type_node, "size", &chain);
 
/* const char *weak_ivar_layout; */
add_field_decl (const_string_type_node, "weak_ivar_layout", &chain);
 
/* struct _prop_list_t *properties; */
ptrt = build_pointer_type (xref_tag (RECORD_TYPE,
get_identifier(UTAG_PROPERTY_LIST)));
add_field_decl (ptrt, "properties", &chain);
 
objc_finish_struct (objc_class_ext_template, decls);
}
 
static void
build_metadata_templates (void)
{
 
if (!objc_method_template)
objc_method_template = build_method_template ();
 
 
 
}
 
/* --- emit metadata --- */
 
static tree
generate_v1_meth_descriptor_table (tree chain, tree protocol,
const char *prefix, tree attr)
{
tree method_list_template, initlist, decl;
int size;
VEC(constructor_elt,gc) *v = NULL;
char buf[BUFSIZE];
 
if (!chain || !prefix)
return NULL_TREE;
 
if (!objc_method_prototype_template)
objc_method_prototype_template = build_method_prototype_template ();
 
size = list_length (chain);
method_list_template =
build_method_prototype_list_template (objc_method_prototype_template,
size);
snprintf (buf, BUFSIZE, "%s_%s", prefix,
IDENTIFIER_POINTER (PROTOCOL_NAME (protocol)));
 
decl = start_var_decl (method_list_template, buf);
 
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, build_int_cst (NULL_TREE, size));
initlist =
build_descriptor_table_initializer (objc_method_prototype_template,
chain);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, initlist);
/* Get into the right section. */
OBJCMETA (decl, objc_meta, attr);
finish_var_decl (decl, objc_build_constructor (method_list_template, v));
return decl;
}
 
/* Build protocol ext =
{size, opt_instance_meth, opt_class_meth, instance_props};
or NULL_TREE if none are present. */
 
static tree
generate_v1_objc_protocol_extension (tree proto_interface,
tree opt_instance_meth,
tree opt_class_meth,
tree instance_props)
{
int size;
location_t loc;
VEC(constructor_elt,gc) *v = NULL;
tree decl, expr;
char buf[BUFSIZE];
 
/* If there are no extensions, then don't bother... */
if (!opt_instance_meth && !opt_class_meth && !instance_props)
return NULL_TREE;
 
if (!objc_protocol_extension_template)
build_v1_objc_protocol_extension_template ();
 
/* uint32_t size */
size = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_protocol_extension_template));
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, build_int_cst (NULL_TREE, size));
 
/* Try for meaningful diagnostics. */
loc = DECL_SOURCE_LOCATION (PROTOCOL_FORWARD_DECL (proto_interface));
 
/* struct objc_method_list *optional_instance_methods; */
if (opt_instance_meth)
expr = convert (objc_method_list_ptr,
build_unary_op (loc, ADDR_EXPR, opt_instance_meth, 0));
else
expr = convert (objc_method_list_ptr, null_pointer_node);
 
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
 
/* struct objc_method_list *optional_class_methods; */
if (opt_class_meth)
expr = convert (objc_method_list_ptr,
build_unary_op (loc, ADDR_EXPR, opt_class_meth, 0));
else
expr = convert (objc_method_list_ptr, null_pointer_node);
 
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
/* struct objc_prop_list *instance_properties; */
if (instance_props)
expr = convert (objc_prop_list_ptr,
build_unary_op (loc, ADDR_EXPR, instance_props, 0));
else
expr = convert (objc_prop_list_ptr, null_pointer_node);
 
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
snprintf (buf, BUFSIZE, "_OBJC_ProtocolExt_%s",
IDENTIFIER_POINTER (PROTOCOL_NAME (proto_interface)));
 
decl = start_var_decl (objc_protocol_extension_template, buf);
expr = objc_build_constructor (TREE_TYPE (decl), v);
OBJCMETA (decl, objc_meta, meta_protocol_extension);
finish_var_decl (decl, expr);
return decl;
}
 
/* This routine builds the following type:
struct _prop_list_t {
uint32_t entsize; // sizeof (struct _prop_t)
uint32_t prop_count;
struct _prop_t prop_list [prop_count];
}
*/
 
static tree
build_v1_property_list_template (tree list_type, int size)
{
tree property_list_t_record;
tree array_type, decls, *chain = NULL;
 
/* anonymous. */
property_list_t_record = objc_start_struct (NULL_TREE);
 
/* uint32_t const entsize */
decls = add_field_decl (integer_type_node, "entsize", &chain);
 
/* int prop_count */
add_field_decl (integer_type_node, "prop_count", &chain);
 
/* struct _prop_t prop_list[]; */
array_type = build_sized_array_type (list_type, size);
add_field_decl (array_type, "prop_list", &chain);
 
objc_finish_struct (property_list_t_record, decls);
return property_list_t_record;
}
 
/* This routine builds the initializer list to initialize the
'struct _prop_t prop_list[]' field of 'struct _prop_list_t' meta-data. */
 
static tree
build_v1_property_table_initializer (tree type, tree context)
{
tree x;
VEC(constructor_elt,gc) *inits = NULL;
 
if (TREE_CODE (context) == PROTOCOL_INTERFACE_TYPE)
x = CLASS_PROPERTY_DECL (context);
else
x = IMPL_PROPERTY_DECL (context);
 
for (; x; x = TREE_CHAIN (x))
{
VEC(constructor_elt,gc) *elemlist = NULL;
tree attribute, name_ident = PROPERTY_NAME (x);
 
CONSTRUCTOR_APPEND_ELT (elemlist, NULL_TREE,
add_objc_string (name_ident, prop_names_attr));
 
attribute = objc_v2_encode_prop_attr (x);
CONSTRUCTOR_APPEND_ELT (elemlist, NULL_TREE,
add_objc_string (attribute, prop_names_attr));
 
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE,
objc_build_constructor (type, elemlist));
}
 
return objc_build_constructor (build_array_type (type, 0),inits);
}
 
/* This routine builds the 'struct _prop_list_t' variable declaration and
initializes it with its initializer list. TYPE is 'struct _prop_list_t',
NAME is the internal name of this variable, SIZE is number of properties
for this class and LIST is the initializer list for its 'prop_list' field. */
 
static tree
generate_v1_property_table (tree context, tree klass_ctxt)
{
tree x, decl, initlist, property_list_template;
bool is_proto = false;
VEC(constructor_elt,gc) *inits = NULL;
int init_val, size = 0;
char buf[BUFSIZE];
 
if (context)
{
gcc_assert (TREE_CODE (context) == PROTOCOL_INTERFACE_TYPE);
x = CLASS_PROPERTY_DECL (context);
is_proto = true;
}
else
x = IMPL_PROPERTY_DECL (klass_ctxt);
 
for (; x; x = TREE_CHAIN (x))
size++;
 
if (size == 0)
return NULL_TREE;
 
if (!objc_v1_property_template)
objc_v1_property_template = build_v1_property_template ();
 
property_list_template =
build_v1_property_list_template (objc_v1_property_template,
size);
initlist = build_v1_property_table_initializer (objc_v1_property_template,
is_proto ? context
: klass_ctxt);
 
init_val = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_v1_property_template));
if (is_proto)
snprintf (buf, BUFSIZE, "_OBJC_ProtocolPropList_%s",
IDENTIFIER_POINTER (PROTOCOL_NAME (context)));
else
snprintf (buf, BUFSIZE, "_OBJC_ClassPropList_%s",
IDENTIFIER_POINTER (CLASS_NAME (klass_ctxt)));
 
decl = start_var_decl (property_list_template, buf);
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, build_int_cst (NULL_TREE, init_val));
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, build_int_cst (NULL_TREE, size));
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, initlist);
x = objc_build_constructor (TREE_TYPE (decl), inits);
OBJCMETA (decl, objc_meta, meta_proplist);
finish_var_decl (decl, x);
return decl;
}
 
static tree
generate_v1_protocol_list (tree i_or_p, tree klass_ctxt)
{
tree array_type, ptype, refs_decl, lproto, e, plist, attr;
int size = 0;
VEC(constructor_elt,gc) *v = NULL;
char buf[BUFSIZE];
 
switch (TREE_CODE (i_or_p))
{
case CLASS_INTERFACE_TYPE:
case CATEGORY_INTERFACE_TYPE:
plist = CLASS_PROTOCOL_LIST (i_or_p);
break;
case PROTOCOL_INTERFACE_TYPE:
plist = PROTOCOL_LIST (i_or_p);
break;
default:
gcc_unreachable ();
}
 
/* Compute size. */
for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto))
if (TREE_CODE (TREE_VALUE (lproto)) == PROTOCOL_INTERFACE_TYPE
&& PROTOCOL_FORWARD_DECL (TREE_VALUE (lproto)))
size++;
 
/* Build initializer. */
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, build_int_cst (NULL_TREE, 0));
e = build_int_cst (build_pointer_type (objc_protocol_template), size);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, e);
 
for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto))
{
tree pval = TREE_VALUE (lproto);
 
if (TREE_CODE (pval) == PROTOCOL_INTERFACE_TYPE
&& PROTOCOL_FORWARD_DECL (pval))
{
tree fwref = PROTOCOL_FORWARD_DECL (pval);
location_t loc = DECL_SOURCE_LOCATION (fwref) ;
e = build_unary_op (loc, ADDR_EXPR, fwref, 0);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, e);
}
}
 
/* static struct objc_protocol *refs[n]; */
switch (TREE_CODE (i_or_p))
{
case PROTOCOL_INTERFACE_TYPE:
snprintf (buf, BUFSIZE, "_OBJC_ProtocolRefs_%s",
IDENTIFIER_POINTER (PROTOCOL_NAME (i_or_p)));
attr = meta_proto_ref;
break;
case CLASS_INTERFACE_TYPE:
snprintf (buf, BUFSIZE, "_OBJC_ClassProtocols_%s",
IDENTIFIER_POINTER (CLASS_NAME (i_or_p)));
attr = meta_clas_prot;
break;
case CATEGORY_INTERFACE_TYPE:
snprintf (buf, BUFSIZE, "_OBJC_CategoryProtocols_%s_%s",
IDENTIFIER_POINTER (CLASS_NAME (klass_ctxt)),
IDENTIFIER_POINTER (CLASS_SUPER_NAME (klass_ctxt)));
attr = meta_catg_prot;
break;
default:
gcc_unreachable ();
}
 
ptype = build_pointer_type (objc_protocol_template);
array_type = build_sized_array_type (ptype, size + 3);
refs_decl = start_var_decl (array_type, buf);
 
OBJCMETA (refs_decl, objc_meta, attr);
finish_var_decl (refs_decl,
objc_build_constructor (TREE_TYPE (refs_decl), v));
 
return refs_decl;
}
 
static tree
build_v1_protocol_initializer (tree type, tree protocol_name, tree protocol_list,
tree inst_methods, tree class_methods,
tree protocol_ext)
{
tree expr, ttyp;
location_t loc;
VEC(constructor_elt,gc) *inits = NULL;
 
if (!objc_protocol_extension_template)
build_v1_objc_protocol_extension_template ();
 
/* TODO: find a better representation of location from the inputs. */
loc = UNKNOWN_LOCATION;
ttyp = build_pointer_type (objc_protocol_extension_template);
/* Instead of jamming the protocol version number into the isa, we pass
either a pointer to the protocol extension - or NULL. */
if (protocol_ext)
expr = convert (ttyp, build_unary_op (loc, ADDR_EXPR, protocol_ext, 0));
else
expr = convert (ttyp, null_pointer_node);
 
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr);
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, protocol_name);
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, protocol_list);
 
ttyp = objc_method_proto_list_ptr;
if (inst_methods)
expr = convert (ttyp, build_unary_op (loc, ADDR_EXPR, inst_methods, 0));
else
expr = convert (ttyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr);
 
if (class_methods)
expr = convert (ttyp, build_unary_op (loc, ADDR_EXPR, class_methods, 0));
else
expr = convert (ttyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr);
 
return objc_build_constructor (type, inits);
}
 
/* An updated version of generate_protocols () that emit the protocol
extension for ABI=1. */
 
/* For each protocol which was referenced either from a @protocol()
expression, or because a class/category implements it (then a
pointer to the protocol is stored in the struct describing the
class/category), we create a statically allocated instance of the
Protocol class. The code is written in such a way as to generate
as few Protocol objects as possible; we generate a unique Protocol
instance for each protocol, and we don't generate a Protocol
instance if the protocol is never referenced (either from a
@protocol() or from a class/category implementation). These
statically allocated objects can be referred to via the static
(that is, private to this module) symbols _OBJC_PROTOCOL_n.
 
The statically allocated Protocol objects that we generate here
need to be fixed up at runtime in order to be used: the 'isa'
pointer of the objects need to be set up to point to the 'Protocol'
class, as known at runtime.
 
The NeXT runtime fixes up all protocols at program startup time,
before main() is entered. It uses a low-level trick to look up all
those symbols, then loops on them and fixes them up. */
 
/* TODO: finish getting rid of passing stuff around in globals. */
 
static GTY(()) tree V1_Protocol_OPT_NST_METHODS_decl;
static GTY(()) tree V1_Protocol_OPT_CLS_METHODS_decl;
static GTY(()) tree V1_ProtocolExt_decl;
static GTY(()) tree V1_Property_decl;
 
static void
generate_v1_protocols (void)
{
tree p;
 
/* If a protocol was directly referenced, pull in indirect references. */
for (p = protocol_chain; p; p = TREE_CHAIN (p))
if (PROTOCOL_FORWARD_DECL (p) && PROTOCOL_LIST (p))
generate_protocol_references (PROTOCOL_LIST (p));
 
for (p = protocol_chain; p; p = TREE_CHAIN (p))
{
tree decl, encoding, initlist, protocol_name_expr;
tree refs_type, refs_decl, refs_expr;
location_t loc;
tree nst_methods = PROTOCOL_NST_METHODS (p);
tree cls_methods = PROTOCOL_CLS_METHODS (p);
 
/* If protocol wasn't referenced, don't generate any code. */
decl = PROTOCOL_FORWARD_DECL (p);
 
if (!decl)
continue;
 
/* Make sure we link in the Protocol class. */
add_class_reference (get_identifier (PROTOCOL_OBJECT_CLASS_NAME));
 
while (nst_methods)
{
if (! METHOD_ENCODING (nst_methods))
{
encoding = encode_method_prototype (nst_methods);
METHOD_ENCODING (nst_methods) = encoding;
}
nst_methods = TREE_CHAIN (nst_methods);
}
 
UOBJC_INSTANCE_METHODS_decl =
generate_v1_meth_descriptor_table (PROTOCOL_NST_METHODS (p), p,
"_OBJC_ProtocolInstanceMethods",
meta_proto_nst_meth);
 
while (cls_methods)
{
if (! METHOD_ENCODING (cls_methods))
{
encoding = encode_method_prototype (cls_methods);
METHOD_ENCODING (cls_methods) = encoding;
}
 
cls_methods = TREE_CHAIN (cls_methods);
}
 
UOBJC_CLASS_METHODS_decl =
generate_v1_meth_descriptor_table (PROTOCOL_CLS_METHODS (p), p,
"_OBJC_ProtocolClassMethods",
meta_proto_cls_meth);
 
/* There should be no optional methods for ABI-0 - but we need to
check all this here before the lists are made. */
nst_methods = PROTOCOL_OPTIONAL_NST_METHODS (p);
while (nst_methods)
{
if (! METHOD_ENCODING (nst_methods))
{
encoding = encode_method_prototype (nst_methods);
METHOD_ENCODING (nst_methods) = encoding;
}
nst_methods = TREE_CHAIN (nst_methods);
}
 
V1_Protocol_OPT_NST_METHODS_decl =
generate_v1_meth_descriptor_table (PROTOCOL_OPTIONAL_NST_METHODS (p), p,
"_OBJC_OptionalProtocolInstanceMethods",
meta_proto_nst_meth);
 
cls_methods = PROTOCOL_OPTIONAL_CLS_METHODS (p);
while (cls_methods)
{
if (! METHOD_ENCODING (cls_methods))
{
encoding = encode_method_prototype (cls_methods);
METHOD_ENCODING (cls_methods) = encoding;
}
 
cls_methods = TREE_CHAIN (cls_methods);
}
 
V1_Protocol_OPT_CLS_METHODS_decl =
generate_v1_meth_descriptor_table (PROTOCOL_OPTIONAL_CLS_METHODS (p), p,
"_OBJC_OptionalProtocolClassMethods",
meta_proto_cls_meth);
 
if (PROTOCOL_LIST (p))
refs_decl = generate_v1_protocol_list (p, objc_implementation_context);
else
refs_decl = 0;
 
/* static struct objc_protocol _OBJC_PROTOCOL_<mumble>; */
protocol_name_expr = add_objc_string (PROTOCOL_NAME (p), class_names);
/* TODO: more locations to be fixed up... */
loc = UNKNOWN_LOCATION;
refs_type =
build_pointer_type (build_pointer_type (objc_protocol_template));
if (refs_decl)
refs_expr = convert (refs_type,
build_unary_op (loc, ADDR_EXPR, refs_decl, 0));
else
refs_expr = convert (refs_type, null_pointer_node);
 
if (flag_objc_abi < 1)
{
/* Original ABI. */
initlist =
build_protocol_initializer (TREE_TYPE (decl),
protocol_name_expr, refs_expr,
UOBJC_INSTANCE_METHODS_decl,
UOBJC_CLASS_METHODS_decl);
finish_var_decl (decl, initlist);
continue;
}
 
/* else - V1 extensions. */
 
V1_Property_decl =
generate_v1_property_table (p, NULL_TREE);
 
V1_ProtocolExt_decl =
generate_v1_objc_protocol_extension (p,
V1_Protocol_OPT_NST_METHODS_decl,
V1_Protocol_OPT_CLS_METHODS_decl,
V1_Property_decl);
 
initlist = build_v1_protocol_initializer (TREE_TYPE (decl),
protocol_name_expr, refs_expr,
UOBJC_INSTANCE_METHODS_decl,
UOBJC_CLASS_METHODS_decl,
V1_ProtocolExt_decl);
finish_var_decl (decl, initlist);
}
}
 
static tree
generate_dispatch_table (tree chain, const char *name, tree attr)
{
tree decl, method_list_template, initlist;
VEC(constructor_elt,gc) *v = NULL;
int size;;
 
if (!chain || !name || !(size = list_length (chain)))
return NULL_TREE;
 
if (!objc_method_template)
objc_method_template = build_method_template ();
 
method_list_template = build_method_list_template (objc_method_template,
size);
initlist = build_dispatch_table_initializer (objc_method_template, chain);
 
decl = start_var_decl (method_list_template, name);
 
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, integer_zero_node);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
build_int_cst (integer_type_node, size));
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, initlist);
 
OBJCMETA (decl, objc_meta, attr);
finish_var_decl (decl,
objc_build_constructor (TREE_TYPE (decl), v));
 
return decl;
}
 
/* Init a category. */
static tree
build_v1_category_initializer (tree type, tree cat_name, tree class_name,
tree inst_methods, tree class_methods,
tree protocol_list, tree property_list,
location_t loc)
{
tree expr, ltyp;
VEC(constructor_elt,gc) *v = NULL;
 
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, cat_name);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, class_name);
 
ltyp = objc_method_list_ptr;
if (inst_methods)
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, inst_methods, 0));
else
expr = convert (ltyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
 
if (class_methods)
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, class_methods, 0));
else
expr = convert (ltyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
 
/* protocol_list = */
ltyp = build_pointer_type (build_pointer_type (objc_protocol_template));
if (protocol_list)
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, protocol_list, 0));
else
expr = convert (ltyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
 
if (flag_objc_abi >= 1)
{
int val = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_category_template));
expr = build_int_cst (NULL_TREE, val);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
ltyp = objc_prop_list_ptr;
if (property_list)
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, property_list, 0));
else
expr = convert (ltyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
}
 
return objc_build_constructor (type, v);
}
 
/* static struct objc_category _OBJC_CATEGORY_<name> = { ... }; */
/* TODO: get rid of passing stuff around in globals. */
static void
generate_v1_category (struct imp_entry *impent)
{
tree initlist, cat_name_expr, class_name_expr;
tree protocol_decl, category, cat_decl;
tree inst_methods = NULL_TREE, class_methods = NULL_TREE;
tree cat = impent->imp_context;
location_t loc;
char buf[BUFSIZE];
 
cat_decl = impent->class_decl;
loc = DECL_SOURCE_LOCATION (cat_decl);
 
add_class_reference (CLASS_NAME (cat));
cat_name_expr = add_objc_string (CLASS_SUPER_NAME (cat), class_names);
class_name_expr = add_objc_string (CLASS_NAME (cat), class_names);
 
category = lookup_category (impent->imp_template, CLASS_SUPER_NAME (cat));
 
if (category && CLASS_PROTOCOL_LIST (category))
{
generate_protocol_references (CLASS_PROTOCOL_LIST (category));
protocol_decl = generate_v1_protocol_list (category, cat);
}
else
protocol_decl = 0;
 
if (flag_objc_abi >= 1)
V1_Property_decl = generate_v1_property_table (NULL_TREE, cat);
else
V1_Property_decl = NULL_TREE;
 
if (CLASS_NST_METHODS (cat))
{
snprintf (buf, BUFSIZE, "_OBJC_CategoryInstanceMethods_%s_%s",
IDENTIFIER_POINTER (CLASS_NAME (cat)),
IDENTIFIER_POINTER (CLASS_SUPER_NAME (cat)));
inst_methods = generate_dispatch_table (CLASS_NST_METHODS (cat), buf,
meta_cati_meth);
}
 
if (CLASS_CLS_METHODS (cat))
{
snprintf (buf, BUFSIZE, "_OBJC_CategoryClassMethods_%s_%s",
IDENTIFIER_POINTER (CLASS_NAME (cat)),
IDENTIFIER_POINTER (CLASS_SUPER_NAME (cat)));
class_methods = generate_dispatch_table (CLASS_CLS_METHODS (cat), buf,
meta_catc_meth);
}
 
initlist = build_v1_category_initializer (TREE_TYPE (cat_decl),
cat_name_expr, class_name_expr,
inst_methods, class_methods,
protocol_decl, V1_Property_decl,
loc);
 
finish_var_decl (cat_decl, initlist);
impent->class_decl = cat_decl;
}
 
/* This routine builds the class extension used by v1 NeXT. */
 
static tree
generate_objc_class_ext (tree property_list, tree context)
{
tree decl, expr, ltyp;
tree weak_ivar_layout_tree;
int size;
location_t loc;
VEC(constructor_elt,gc) *v = NULL;
char buf[BUFSIZE];
 
/* TODO: pass the loc in or find it from args. */
loc = UNKNOWN_LOCATION;
 
/* const char *weak_ivar_layout
TODO: Figure the ivar layouts out... */
weak_ivar_layout_tree = NULL_TREE;
 
if (!property_list && !weak_ivar_layout_tree)
return NULL_TREE;
 
if (!objc_class_ext_template)
build_objc_class_ext_template ();
 
/* uint32_t size */
size = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_class_ext_template));
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, build_int_cst (NULL_TREE, size));
 
ltyp = const_string_type_node;
if (weak_ivar_layout_tree)
expr = convert (ltyp, weak_ivar_layout_tree);
else
expr = convert (ltyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
 
/* struct _prop_list_t *properties; */
ltyp = objc_prop_list_ptr;
if (property_list)
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, property_list, 0));
else
expr = convert (ltyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
 
snprintf (buf, BUFSIZE, "_OBJC_ClassExt_%s",
IDENTIFIER_POINTER (CLASS_NAME (context)));
decl = start_var_decl (objc_class_ext_template, buf);
expr = objc_build_constructor (TREE_TYPE (decl), v);
OBJCMETA (decl, objc_meta, meta_class_extension);
finish_var_decl (decl, expr);
return decl;
}
 
/* struct _objc_class {
struct objc_class *isa;
struct objc_class *super_class;
char *name;
long version;
long info;
long instance_size;
struct objc_ivar_list *ivars;
struct objc_method_list *methods;
struct objc_cache *cache;
struct objc_protocol_list *protocols;
#if ABI >= 1
const char *ivar_layout;
struct _objc_class_ext *ext;
#else
void *sel_id;
void *gc_object_type;
#endif
}; */
 
static tree
build_v1_shared_structure_initializer (tree type, tree isa, tree super,
tree name, tree size, int status,
tree dispatch_table, tree ivar_list,
tree protocol_list, tree class_ext)
{
tree expr, ltyp;
location_t loc;
VEC(constructor_elt,gc) *v = NULL;
 
/* TODO: fish the location out of the input data. */
loc = UNKNOWN_LOCATION;
 
/* isa = */
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, isa);
 
/* super_class = */
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, super);
 
/* name = */
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, default_conversion (name));
 
/* version = */
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
build_int_cst (long_integer_type_node, 0));
 
/* info = */
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
build_int_cst (long_integer_type_node, status));
 
/* instance_size = */
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
convert (long_integer_type_node, size));
 
/* objc_ivar_list = */
ltyp = objc_ivar_list_ptr;
if (ivar_list)
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, ivar_list, 0));
else
expr = convert (ltyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
 
/* objc_method_list = */
ltyp = objc_method_list_ptr;
if (dispatch_table)
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, dispatch_table, 0));
else
expr = convert (ltyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
 
ltyp = build_pointer_type (xref_tag (RECORD_TYPE,
get_identifier ("objc_cache")));
/* method_cache = */
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, convert (ltyp, null_pointer_node));
 
/* protocol_list = */
ltyp = build_pointer_type (build_pointer_type (objc_protocol_template));
if (protocol_list)
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, protocol_list, 0));
else
expr = convert (ltyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
 
if (flag_objc_abi >= 1)
{
/* TODO: figure out the ivar_layout stuff. */
expr = convert (const_string_type_node, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
if (!objc_class_ext_template)
build_objc_class_ext_template ();
ltyp = build_pointer_type (objc_class_ext_template);
if (class_ext)
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, class_ext, 0));
else
expr = convert (ltyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
}
else
{
/* sel_id = NULL */
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, null_pointer_node);
 
/* gc_object_type = NULL */
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, null_pointer_node);
}
return objc_build_constructor (type, v);
}
 
static tree
generate_ivars_list (tree chain, const char *name, tree attr)
{
tree initlist, ivar_list_template, decl;
int size;
VEC(constructor_elt,gc) *inits = NULL;
 
if (!chain)
return NULL_TREE;
 
if (!objc_ivar_template)
objc_ivar_template = build_ivar_template ();
 
size = ivar_list_length (chain);
 
generating_instance_variables = 1;
ivar_list_template = build_ivar_list_template (objc_ivar_template, size);
initlist = build_ivar_list_initializer (objc_ivar_template, chain);
generating_instance_variables = 0;
 
decl = start_var_decl (ivar_list_template, name);
 
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, build_int_cst (NULL_TREE, size));
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, initlist);
 
OBJCMETA (decl, objc_meta, attr);
finish_var_decl (decl,
objc_build_constructor (TREE_TYPE (decl), inits));
 
return decl;
}
 
/* static struct objc_class _OBJC_METACLASS_Foo={ ... };
static struct objc_class _OBJC_CLASS_Foo={ ... }; */
 
static void
generate_v1_class_structs (struct imp_entry *impent)
{
tree name_expr, super_expr, root_expr, class_decl, meta_decl;
tree my_root_id, my_super_id;
tree cast_type, initlist, protocol_decl;
tree class_ext_decl = NULL_TREE, props = NULL_TREE;
tree inst_methods = NULL_TREE, class_methods = NULL_TREE;
tree chain, inst_ivars = NULL_TREE, class_ivars = NULL_TREE;
int cls_flags;
location_t loc;
char buf[BUFSIZE];
 
/* objc_implementation_context = impent->imp_context;
implementation_template = impent->imp_template;*/
class_decl = impent->class_decl;
meta_decl = impent->meta_decl;
cls_flags = impent->has_cxx_cdtors ? CLS_HAS_CXX_STRUCTORS : 0 ;
 
loc = DECL_SOURCE_LOCATION (impent->class_decl);
 
if (flag_objc_abi >= 1)
{
/* ABI=1 additions. */
props = generate_v1_property_table (NULL_TREE, impent->imp_context);
class_ext_decl = generate_objc_class_ext (props, impent->imp_context);
}
 
my_super_id = CLASS_SUPER_NAME (impent->imp_template);
if (my_super_id)
{
add_class_reference (my_super_id);
 
/* Compute "my_root_id" - this is required for code generation.
the "isa" for all meta class structures points to the root of
the inheritance hierarchy (e.g. "__Object")... */
my_root_id = my_super_id;
do
{
tree my_root_int = lookup_interface (my_root_id);
 
if (my_root_int && CLASS_SUPER_NAME (my_root_int))
my_root_id = CLASS_SUPER_NAME (my_root_int);
else
break;
}
while (1);
super_expr = add_objc_string (my_super_id, class_names);
}
else
{
/* No super class. */
my_root_id = CLASS_NAME (impent->imp_template);
super_expr = null_pointer_node;
}
 
/* Install class `isa' and `super' pointers at runtime. */
cast_type = build_pointer_type (objc_class_template);
super_expr = build_c_cast (loc, cast_type, super_expr);
 
root_expr = add_objc_string (my_root_id, class_names);
root_expr = build_c_cast (loc, cast_type, root_expr);
 
if (CLASS_PROTOCOL_LIST (impent->imp_template))
{
generate_protocol_references (CLASS_PROTOCOL_LIST (impent->imp_template));
protocol_decl = generate_v1_protocol_list (impent->imp_template,
impent->imp_context);
}
else
protocol_decl = NULL_TREE;
 
if (CLASS_CLS_METHODS (impent->imp_context))
{
snprintf (buf, BUFSIZE, "_OBJC_ClassMethods_%s",
IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)));
class_methods = generate_dispatch_table (CLASS_CLS_METHODS (impent->imp_context),
buf, meta_clac_meth);
}
 
if (CLASS_SUPER_NAME (impent->imp_template) == NULL_TREE
&& (chain = TYPE_FIELDS (objc_class_template)))
{
snprintf (buf, BUFSIZE, "_OBJC_ClassIvars_%s",
IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)));
class_ivars = generate_ivars_list (chain, buf, meta_clac_vars);
}
/* TODO: get rid of hidden passing of stuff in globals. */
/* UOBJC_INSTANCE/CLASS_Variables_decl made in generate_ivarlists(). */
 
name_expr = add_objc_string (CLASS_NAME (impent->imp_template), class_names);
 
/* static struct objc_class _OBJC_METACLASS_Foo = { ... }; */
 
initlist = build_v1_shared_structure_initializer
(TREE_TYPE (meta_decl),
root_expr, super_expr, name_expr,
convert (integer_type_node, TYPE_SIZE_UNIT (objc_class_template)),
CLS_META, class_methods, class_ivars,
protocol_decl, NULL_TREE);
 
finish_var_decl (meta_decl, initlist);
impent->meta_decl = meta_decl;
 
/* static struct objc_class _OBJC_CLASS_Foo={ ... }; */
if (CLASS_NST_METHODS (impent->imp_context))
{
snprintf (buf, BUFSIZE, "_OBJC_InstanceMethods_%s",
IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)));
inst_methods = generate_dispatch_table (CLASS_NST_METHODS (impent->imp_context),
buf, meta_clai_meth);
}
 
if ((chain = CLASS_IVARS (impent->imp_template)))
{
snprintf (buf, BUFSIZE, "_OBJC_InstanceIvars_%s",
IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)));
inst_ivars = generate_ivars_list (chain, buf, meta_clai_vars);
}
 
initlist = build_v1_shared_structure_initializer
(TREE_TYPE (class_decl),
build_unary_op (loc, ADDR_EXPR, meta_decl, 0),
super_expr, name_expr,
convert (integer_type_node,
TYPE_SIZE_UNIT (CLASS_STATIC_TEMPLATE (impent->imp_template))),
CLS_FACTORY | cls_flags, inst_methods, inst_ivars,
protocol_decl, class_ext_decl);
 
finish_var_decl (class_decl, initlist);
impent->class_decl = class_decl;
}
 
/* --- Output NeXT V1 Metadata --- */
 
/* Create the initial value for the `defs' field of _objc_symtab.
This is a CONSTRUCTOR. */
 
static tree
init_def_list (tree type)
{
tree expr;
location_t loc;
struct imp_entry *impent;
VEC(constructor_elt,gc) *v = NULL;
 
if (imp_count)
for (impent = imp_list; impent; impent = impent->next)
{
if (TREE_CODE (impent->imp_context) == CLASS_IMPLEMENTATION_TYPE)
{
loc = DECL_SOURCE_LOCATION (impent->class_decl);
expr = build_unary_op (loc,
ADDR_EXPR, impent->class_decl, 0);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
}
}
 
if (cat_count)
for (impent = imp_list; impent; impent = impent->next)
{
if (TREE_CODE (impent->imp_context) == CATEGORY_IMPLEMENTATION_TYPE)
{
loc = DECL_SOURCE_LOCATION (impent->class_decl);
expr = build_unary_op (loc,
ADDR_EXPR, impent->class_decl, 0);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
}
}
 
return objc_build_constructor (type, v);
}
 
/* Take care of defining and initializing _OBJC_SYMBOLS. */
 
/* Predefine the following data type:
 
struct _objc_symtab
{
long sel_ref_cnt;
SEL *refs;
short cls_def_cnt;
short cat_def_cnt;
void *defs[cls_def_cnt + cat_def_cnt];
}; */
 
static void
build_objc_symtab_template (void)
{
tree fields, *chain = NULL;
 
objc_symtab_template = objc_start_struct (get_identifier (UTAG_SYMTAB));
 
/* long sel_ref_cnt; */
fields = add_field_decl (long_integer_type_node, "sel_ref_cnt", &chain);
 
/* SEL *refs; */
add_field_decl (build_pointer_type (objc_selector_type), "refs", &chain);
 
/* short cls_def_cnt; */
add_field_decl (short_integer_type_node, "cls_def_cnt", &chain);
 
/* short cat_def_cnt; */
add_field_decl (short_integer_type_node, "cat_def_cnt", &chain);
 
if (imp_count || cat_count)
{
/* void *defs[imp_count + cat_count (+ 1)]; */
/* NB: The index is one less than the size of the array. */
int index = imp_count + cat_count;
tree array_type = build_sized_array_type (ptr_type_node, index);
add_field_decl (array_type, "defs", &chain);
}
 
objc_finish_struct (objc_symtab_template, fields);
}
/* Construct the initial value for all of _objc_symtab. */
 
static tree
init_objc_symtab (tree type)
{
VEC(constructor_elt,gc) *v = NULL;
 
/* sel_ref_cnt = { ..., 5, ... } */
 
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
build_int_cst (long_integer_type_node, 0));
 
/* refs = { ..., _OBJC_SELECTOR_TABLE, ... } */
 
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
convert (build_pointer_type (objc_selector_type),
integer_zero_node));
 
/* cls_def_cnt = { ..., 5, ... } */
 
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
build_int_cst (short_integer_type_node, imp_count));
 
/* cat_def_cnt = { ..., 5, ... } */
 
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
build_int_cst (short_integer_type_node, cat_count));
 
/* cls_def = { ..., { &Foo, &Bar, ...}, ... } */
 
if (imp_count || cat_count)
{
tree field = TYPE_FIELDS (type);
field = DECL_CHAIN (DECL_CHAIN (DECL_CHAIN (DECL_CHAIN (field))));
 
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, init_def_list (TREE_TYPE (field)));
}
 
return objc_build_constructor (type, v);
}
 
/* Create the declaration of _OBJC_SYMBOLS, with type `struct _objc_symtab'
and initialized appropriately. */
 
static void
generate_objc_symtab_decl (void)
{
build_objc_symtab_template ();
UOBJC_SYMBOLS_decl = start_var_decl (objc_symtab_template, "_OBJC_Symbols");
/* Allow the runtime to mark meta-data such that it can be assigned to target
specific sections by the back-end. */
OBJCMETA (UOBJC_SYMBOLS_decl, objc_meta, meta_symtab);
finish_var_decl (UOBJC_SYMBOLS_decl,
init_objc_symtab (TREE_TYPE (UOBJC_SYMBOLS_decl)));
}
 
 
static void
handle_next_class_ref (tree chain)
{
const char *name = IDENTIFIER_POINTER (TREE_VALUE (chain));
char *string = (char *) alloca (strlen (name) + 30);
 
sprintf (string, ".objc_class_name_%s", name);
 
#ifdef ASM_DECLARE_UNRESOLVED_REFERENCE
ASM_DECLARE_UNRESOLVED_REFERENCE (asm_out_file, string);
#else
return ; /* NULL build for targets other than Darwin. */
#endif
}
 
static void
handle_next_impent (struct imp_entry *impent)
{
char buf[BUFSIZE];
 
switch (TREE_CODE (impent->imp_context))
{
case CLASS_IMPLEMENTATION_TYPE:
snprintf (buf, BUFSIZE, ".objc_class_name_%s",
IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)));
break;
case CATEGORY_IMPLEMENTATION_TYPE:
snprintf (buf, BUFSIZE, "*.objc_category_name_%s_%s",
IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)),
IDENTIFIER_POINTER (CLASS_SUPER_NAME (impent->imp_context)));
break;
default:
return;
}
 
#ifdef ASM_DECLARE_CLASS_REFERENCE
ASM_DECLARE_CLASS_REFERENCE (asm_out_file, buf);
#else
return ; /* NULL build for targets other than Darwin. */
#endif
}
 
static void
generate_classref_translation_entry (tree chain)
{
tree expr, decl, type;
 
decl = TREE_PURPOSE (chain);
type = TREE_TYPE (decl);
 
expr = add_objc_string (TREE_VALUE (chain), class_names);
expr = convert (type, expr); /* cast! */
 
/* This is a class reference. It is re-written by the runtime,
but will be optimized away unless we force it. */
DECL_PRESERVE_P (decl) = 1;
OBJCMETA (decl, objc_meta, meta_class_reference);
finish_var_decl (decl, expr);
return;
}
 
 
/* The Fix-and-Continue functionality available in Mac OS X 10.3 and
later requires that ObjC translation units participating in F&C be
specially marked. The following routine accomplishes this. */
 
/* static int _OBJC_IMAGE_INFO[2] = { 0, 1 }; */
 
static void
generate_objc_image_info (void)
{
tree decl;
int flags
= ((flag_replace_objc_classes && imp_count ? 1 : 0)
| (flag_objc_gc ? 2 : 0));
VEC(constructor_elt,gc) *v = NULL;
tree array_type;
 
array_type = build_sized_array_type (integer_type_node, 2);
 
decl = start_var_decl (array_type, "_OBJC_ImageInfo");
 
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, integer_zero_node);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, build_int_cst (integer_type_node, flags));
/* The runtime wants this and refers to it in a manner hidden from the compiler.
So we must force the output. */
DECL_PRESERVE_P (decl) = 1;
OBJCMETA (decl, objc_meta, meta_info);
finish_var_decl (decl, objc_build_constructor (TREE_TYPE (decl), v));
}
 
static void
objc_generate_v1_next_metadata (void)
{
struct imp_entry *impent;
tree chain, attr;
long vers;
 
/* FIXME: Make sure that we generate no metadata if there is nothing
to put into it. */
 
if (objc_static_instances)
gcc_unreachable (); /* Not for NeXT */
 
build_metadata_templates ();
objc_implementation_context =
implementation_template =
UOBJC_CLASS_decl =
UOBJC_METACLASS_decl = NULL_TREE;
 
for (impent = imp_list; impent; impent = impent->next)
{
 
/* If -gen-decls is present, Dump the @interface of each class.
TODO: Dump the classes in the order they were found, rather than in
reverse order as we are doing now. */
if (flag_gen_declaration)
dump_interface (gen_declaration_file, impent->imp_context);
 
/* all of the following reference the string pool... */
if (TREE_CODE (impent->imp_context) == CLASS_IMPLEMENTATION_TYPE)
generate_v1_class_structs (impent);
else
generate_v1_category (impent);
}
 
/* If we are using an array of selectors, we must always
finish up the array decl even if no selectors were used. */
build_next_selector_translation_table ();
 
if (protocol_chain)
generate_v1_protocols ();
 
/* Pass summary information to the runtime. */
if (imp_count || cat_count)
generate_objc_symtab_decl ();
 
vers = OBJC_VERSION;
attr = build_tree_list (objc_meta, meta_modules);
build_module_descriptor (vers, attr);
 
/* This conveys information on GC usage and zero-link. */
generate_objc_image_info ();
 
/* Dump the class references. This forces the appropriate classes
to be linked into the executable image, preserving unix archive
semantics. This can be removed when we move to a more dynamically
linked environment. */
 
for (chain = cls_ref_chain; chain; chain = TREE_CHAIN (chain))
{
handle_next_class_ref (chain);
if (TREE_PURPOSE (chain))
generate_classref_translation_entry (chain);
}
 
for (impent = imp_list; impent; impent = impent->next)
handle_next_impent (impent);
 
/* Emit the strings tables. */
generate_strings ();
}
 
/* --- exceptions stuff --- */
 
/* Predefine the following data type:
 
struct _objc_exception_data
{
int buf[OBJC_JBLEN];
void *pointers[4];
}; */
 
/* The following yuckiness should prevent users from having to #include
<setjmp.h> in their code... */
 
/* Define to a harmless positive value so the below code doesn't die. */
#ifndef OBJC_JBLEN
#define OBJC_JBLEN 18
#endif
 
static void
build_next_objc_exception_stuff (void)
{
tree decls, temp_type, *chain = NULL;
 
objc_exception_data_template
= objc_start_struct (get_identifier (UTAG_EXCDATA));
 
/* int buf[OBJC_JBLEN]; */
 
temp_type = build_sized_array_type (integer_type_node, OBJC_JBLEN);
decls = add_field_decl (temp_type, "buf", &chain);
 
/* void *pointers[4]; */
 
temp_type = build_sized_array_type (ptr_type_node, 4);
add_field_decl (temp_type, "pointers", &chain);
 
objc_finish_struct (objc_exception_data_template, decls);
 
/* int _setjmp(...); */
/* If the user includes <setjmp.h>, this shall be superseded by
'int _setjmp(jmp_buf);' */
temp_type = build_varargs_function_type_list (integer_type_node, NULL_TREE);
objc_setjmp_decl
= add_builtin_function (TAG_SETJMP, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE);
 
/* id objc_exception_extract(struct _objc_exception_data *); */
temp_type
= build_function_type_list (objc_object_type,
build_pointer_type (objc_exception_data_template),
NULL_TREE);
objc_exception_extract_decl
= add_builtin_function (TAG_EXCEPTIONEXTRACT, temp_type, 0, NOT_BUILT_IN, NULL,
NULL_TREE);
/* void objc_exception_try_enter(struct _objc_exception_data *); */
/* void objc_exception_try_exit(struct _objc_exception_data *); */
temp_type
= build_function_type_list (void_type_node,
build_pointer_type (objc_exception_data_template),
NULL_TREE);
objc_exception_try_enter_decl
= add_builtin_function (TAG_EXCEPTIONTRYENTER, temp_type, 0, NOT_BUILT_IN, NULL,
NULL_TREE);
objc_exception_try_exit_decl
= add_builtin_function (TAG_EXCEPTIONTRYEXIT, temp_type, 0, NOT_BUILT_IN, NULL,
NULL_TREE);
 
/* int objc_exception_match(id, id); */
temp_type
= build_function_type_list (integer_type_node,
objc_object_type, objc_object_type, NULL_TREE);
objc_exception_match_decl
= add_builtin_function (TAG_EXCEPTIONMATCH, temp_type, 0, NOT_BUILT_IN, NULL,
NULL_TREE);
 
/* id objc_assign_ivar (id, id, unsigned int); */
/* id objc_assign_ivar_Fast (id, id, unsigned int)
__attribute__ ((hard_coded_address (OFFS_ASSIGNIVAR_FAST))); */
temp_type
= build_function_type_list (objc_object_type,
objc_object_type,
objc_object_type,
unsigned_type_node,
NULL_TREE);
objc_assign_ivar_decl
= add_builtin_function (TAG_ASSIGNIVAR, temp_type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
#ifdef OFFS_ASSIGNIVAR_FAST
objc_assign_ivar_fast_decl
= add_builtin_function (TAG_ASSIGNIVAR_FAST, temp_type, 0,
NOT_BUILT_IN, NULL, NULL_TREE);
DECL_ATTRIBUTES (objc_assign_ivar_fast_decl)
= tree_cons (get_identifier ("hard_coded_address"),
build_int_cst (NULL_TREE, OFFS_ASSIGNIVAR_FAST),
NULL_TREE);
#else
/* Default to slower ivar method. */
objc_assign_ivar_fast_decl = objc_assign_ivar_decl;
#endif
 
/* id objc_assign_global (id, id *); */
/* id objc_assign_strongCast (id, id *); */
temp_type = build_function_type_list (objc_object_type,
objc_object_type,
build_pointer_type (objc_object_type),
NULL_TREE);
objc_assign_global_decl
= add_builtin_function (TAG_ASSIGNGLOBAL, temp_type, 0, NOT_BUILT_IN, NULL,
NULL_TREE);
objc_assign_strong_cast_decl
= add_builtin_function (TAG_ASSIGNSTRONGCAST, temp_type, 0, NOT_BUILT_IN, NULL,
NULL_TREE);
}
 
/* --- NeXT V1 SJLJ Exceptions --- */
 
/* Build "objc_exception_try_exit(&_stack)". */
 
static tree
next_sjlj_build_try_exit (struct objc_try_context **ctcp)
{
tree t;
t = build_fold_addr_expr_loc (input_location, (*ctcp)->stack_decl);
t = tree_cons (NULL, t, NULL);
t = build_function_call (input_location,
objc_exception_try_exit_decl, t);
return t;
}
 
/* Build
objc_exception_try_enter (&_stack);
if (_setjmp(&_stack.buf))
;
else
;
Return the COND_EXPR. Note that the THEN and ELSE fields are left
empty, ready for the caller to fill them in. */
 
static tree
next_sjlj_build_enter_and_setjmp (struct objc_try_context **ctcp)
{
tree t, enter, sj, cond;
 
t = build_fold_addr_expr_loc (input_location, (*ctcp)->stack_decl);
t = tree_cons (NULL, t, NULL);
enter = build_function_call (input_location,
objc_exception_try_enter_decl, t);
 
t = objc_build_component_ref ((*ctcp)->stack_decl,
get_identifier ("buf"));
t = build_fold_addr_expr_loc (input_location, t);
#ifdef OBJCPLUS
/* Convert _setjmp argument to type that is expected. */
if (prototype_p (TREE_TYPE (objc_setjmp_decl)))
t = convert (TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (objc_setjmp_decl))), t);
else
t = convert (ptr_type_node, t);
#else
t = convert (ptr_type_node, t);
#endif
t = tree_cons (NULL, t, NULL);
sj = build_function_call (input_location,
objc_setjmp_decl, t);
 
cond = build2 (COMPOUND_EXPR, TREE_TYPE (sj), enter, sj);
cond = c_common_truthvalue_conversion (input_location, cond);
 
return build3 (COND_EXPR, void_type_node, cond, NULL, NULL);
}
 
/* Build:
 
DECL = objc_exception_extract(&_stack); */
 
static tree
next_sjlj_build_exc_extract (struct objc_try_context **ctcp, tree decl)
{
tree t;
 
t = build_fold_addr_expr_loc (input_location, (*ctcp)->stack_decl);
t = tree_cons (NULL, t, NULL);
t = build_function_call (input_location,
objc_exception_extract_decl, t);
t = convert (TREE_TYPE (decl), t);
t = build2 (MODIFY_EXPR, void_type_node, decl, t);
 
return t;
}
 
/* Build
if (objc_exception_match(obj_get_class(TYPE), _caught)
BODY
else if (...)
...
else
{
_rethrow = _caught;
objc_exception_try_exit(&_stack);
}
from the sequence of CATCH_EXPRs in the current try context. */
 
static tree
next_sjlj_build_catch_list (struct objc_try_context **ctcp)
{
tree_stmt_iterator i = tsi_start ((*ctcp)->catch_list);
tree catch_seq, t;
tree *last = &catch_seq;
bool saw_id = false;
 
for (; !tsi_end_p (i); tsi_next (&i))
{
tree stmt = tsi_stmt (i);
tree type = CATCH_TYPES (stmt);
tree body = CATCH_BODY (stmt);
 
if (type != error_mark_node
&& objc_is_object_id (TREE_TYPE (type)))
{
*last = body;
saw_id = true;
break;
}
else
{
tree args, cond;
 
if (type == error_mark_node)
cond = error_mark_node;
else
{
args = tree_cons (NULL, (*ctcp)->caught_decl, NULL);
t = objc_get_class_reference (OBJC_TYPE_NAME (TREE_TYPE (type)));
args = tree_cons (NULL, t, args);
t = build_function_call (input_location,
objc_exception_match_decl, args);
cond = c_common_truthvalue_conversion (input_location, t);
}
t = build3 (COND_EXPR, void_type_node, cond, body, NULL);
SET_EXPR_LOCATION (t, EXPR_LOCATION (stmt));
 
*last = t;
last = &COND_EXPR_ELSE (t);
}
}
 
if (!saw_id)
{
t = build2 (MODIFY_EXPR, void_type_node, (*ctcp)->rethrow_decl,
(*ctcp)->caught_decl);
SET_EXPR_LOCATION (t, (*ctcp)->end_catch_locus);
append_to_statement_list (t, last);
 
t = next_sjlj_build_try_exit (ctcp);
SET_EXPR_LOCATION (t, (*ctcp)->end_catch_locus);
append_to_statement_list (t, last);
}
 
return catch_seq;
}
 
/* Build a complete @try-@catch-@finally block for legacy Darwin setjmp
exception handling. We aim to build:
 
{
struct _objc_exception_data _stack;
id _rethrow = 0;
try
{
objc_exception_try_enter (&_stack);
if (_setjmp(&_stack.buf))
{
id _caught = objc_exception_extract(&_stack);
objc_exception_try_enter (&_stack);
if (_setjmp(&_stack.buf))
_rethrow = objc_exception_extract(&_stack);
else
CATCH-LIST
}
else
TRY-BLOCK
}
finally
{
if (!_rethrow)
objc_exception_try_exit(&_stack);
FINALLY-BLOCK
if (_rethrow)
objc_exception_throw(_rethrow);
}
}
 
If CATCH-LIST is empty, we can omit all of the block containing
"_caught" except for the setting of _rethrow. Note the use of
a real TRY_FINALLY_EXPR here, which is not involved in EH per-se,
but handles goto and other exits from the block. */
 
static tree
next_sjlj_build_try_catch_finally (struct objc_try_context **ctcp)
{
tree rethrow_decl, stack_decl, t;
tree catch_seq, try_fin, bind;
struct objc_try_context *cur_try_context = *ctcp;
 
/* Create the declarations involved. */
t = xref_tag (RECORD_TYPE, get_identifier (UTAG_EXCDATA));
stack_decl = objc_create_temporary_var (t, NULL);
cur_try_context->stack_decl = stack_decl;
 
rethrow_decl = objc_create_temporary_var (objc_object_type, NULL);
cur_try_context->rethrow_decl = rethrow_decl;
TREE_CHAIN (rethrow_decl) = stack_decl;
 
/* Build the outermost variable binding level. */
bind = build3 (BIND_EXPR, void_type_node, rethrow_decl, NULL, NULL);
SET_EXPR_LOCATION (bind, cur_try_context->try_locus);
TREE_SIDE_EFFECTS (bind) = 1;
 
/* Initialize rethrow_decl. */
t = build2 (MODIFY_EXPR, void_type_node, rethrow_decl,
convert (objc_object_type, null_pointer_node));
SET_EXPR_LOCATION (t, cur_try_context->try_locus);
append_to_statement_list (t, &BIND_EXPR_BODY (bind));
 
/* Build the outermost TRY_FINALLY_EXPR. */
try_fin = build2 (TRY_FINALLY_EXPR, void_type_node, NULL, NULL);
SET_EXPR_LOCATION (try_fin, cur_try_context->try_locus);
TREE_SIDE_EFFECTS (try_fin) = 1;
append_to_statement_list (try_fin, &BIND_EXPR_BODY (bind));
 
/* Create the complete catch sequence. */
if (cur_try_context->catch_list)
{
tree caught_decl = objc_build_exc_ptr (ctcp);
catch_seq = build_stmt (input_location, BIND_EXPR, caught_decl, NULL, NULL);
TREE_SIDE_EFFECTS (catch_seq) = 1;
 
t = next_sjlj_build_exc_extract (ctcp, caught_decl);
append_to_statement_list (t, &BIND_EXPR_BODY (catch_seq));
 
t = next_sjlj_build_enter_and_setjmp (ctcp);
COND_EXPR_THEN (t) = next_sjlj_build_exc_extract (ctcp, rethrow_decl);
COND_EXPR_ELSE (t) = next_sjlj_build_catch_list (ctcp);
append_to_statement_list (t, &BIND_EXPR_BODY (catch_seq));
}
else
catch_seq = next_sjlj_build_exc_extract (ctcp, rethrow_decl);
SET_EXPR_LOCATION (catch_seq, cur_try_context->end_try_locus);
 
/* Build the main register-and-try if statement. */
t = next_sjlj_build_enter_and_setjmp (ctcp);
SET_EXPR_LOCATION (t, cur_try_context->try_locus);
COND_EXPR_THEN (t) = catch_seq;
COND_EXPR_ELSE (t) = cur_try_context->try_body;
TREE_OPERAND (try_fin, 0) = t;
 
/* Build the complete FINALLY statement list. */
t = next_sjlj_build_try_exit (ctcp);
t = build_stmt (input_location, COND_EXPR,
c_common_truthvalue_conversion
(input_location, rethrow_decl),
NULL, t);
SET_EXPR_LOCATION (t, cur_try_context->finally_locus);
append_to_statement_list (t, &TREE_OPERAND (try_fin, 1));
 
append_to_statement_list (cur_try_context->finally_body,
&TREE_OPERAND (try_fin, 1));
 
t = tree_cons (NULL, rethrow_decl, NULL);
t = build_function_call (input_location,
objc_exception_throw_decl, t);
t = build_stmt (input_location, COND_EXPR,
c_common_truthvalue_conversion (input_location,
rethrow_decl),
t, NULL);
SET_EXPR_LOCATION (t, cur_try_context->end_finally_locus);
append_to_statement_list (t, &TREE_OPERAND (try_fin, 1));
 
return bind;
}
 
/* We do not expect this to be used at the moment.
If (a) it is possible to implement unwinder exceptions.
(b) we do it... then it might be possibly useful.
*/
static GTY(()) tree objc_eh_personality_decl;
 
static tree
objc_eh_runtime_type (tree type)
{
tree ident, eh_id, decl, str;
 
gcc_unreachable ();
if (type == error_mark_node)
{
/* Use 'ErrorMarkNode' as class name when error_mark_node is found
to prevent an ICE. Note that we know that the compiler will
terminate with an error and this 'ErrorMarkNode' class name will
never be actually used. */
ident = get_identifier ("ErrorMarkNode");
goto make_err_class;
}
 
if (POINTER_TYPE_P (type) && objc_is_object_id (TREE_TYPE (type)))
{
ident = get_identifier ("id");
goto make_err_class;
}
 
if (!POINTER_TYPE_P (type) || !TYPED_OBJECT (TREE_TYPE (type)))
{
#ifdef OBJCPLUS
/* This routine is also called for c++'s catch clause; in which case,
we use c++'s typeinfo decl. */
return build_eh_type_type (type);
#else
error ("non-objective-c type '%T' cannot be caught", type);
ident = get_identifier ("ErrorMarkNode");
goto make_err_class;
#endif
}
else
ident = OBJC_TYPE_NAME (TREE_TYPE (type));
 
make_err_class:
/* If this class was already referenced, then it will be output during
meta-data emission, so we don't need to do it here. */
decl = get_objc_string_decl (ident, class_names);
eh_id = add_objc_string (ident, class_names);
if (!decl)
{
/* Not found ... so we need to build it - from the freshly-entered id. */
decl = get_objc_string_decl (ident, class_names);
str = my_build_string (IDENTIFIER_LENGTH (ident) + 1,
IDENTIFIER_POINTER (ident));
/* We have to finalize this var here, because this might be called after
all the other metadata strings have been emitted. */
finish_var_decl (decl, str);
}
return eh_id;
}
 
/* For NeXT ABI 0 and 1, the personality routines are just those of the
underlying language. */
 
static tree
objc_eh_personality (void)
{
if (!objc_eh_personality_decl)
#ifndef OBJCPLUS
objc_eh_personality_decl = build_personality_function ("gcc");
#else
objc_eh_personality_decl = build_personality_function ("gxx");
#endif
return objc_eh_personality_decl;
}
 
/* --- interfaces --- */
 
static tree
build_throw_stmt (location_t loc, tree throw_expr, bool rethrown ATTRIBUTE_UNUSED)
{
tree t;
VEC(tree, gc) *parms = VEC_alloc (tree, gc, 1);
/* A throw is just a call to the runtime throw function with the
object as a parameter. */
VEC_quick_push (tree, parms, throw_expr);
t = build_function_call_vec (loc, objc_exception_throw_decl, parms, NULL);
VEC_free (tree, gc, parms);
return add_stmt (t);
}
 
/* Build __builtin_eh_pointer, or the moral equivalent. In the case
of Darwin, we'll arrange for it to be initialized (and associated
with a binding) later. */
 
static tree
objc_build_exc_ptr (struct objc_try_context **cur_try_context)
{
if (flag_objc_sjlj_exceptions)
{
tree var = (*cur_try_context)->caught_decl;
if (!var)
{
var = objc_create_temporary_var (objc_object_type, NULL);
(*cur_try_context)->caught_decl = var;
}
return var;
}
else
{
tree t;
t = builtin_decl_explicit (BUILT_IN_EH_POINTER);
t = build_call_expr (t, 1, integer_zero_node);
return fold_convert (objc_object_type, t);
}
}
 
static tree
begin_catch (struct objc_try_context **cur_try_context, tree type,
tree decl, tree compound, bool ellipsis ATTRIBUTE_UNUSED)
{
tree t;
/* Record the data for the catch in the try context so that we can
finalize it later. We treat ellipsis the same way as catching
with 'id xyz'. */
t = build_stmt (input_location, CATCH_EXPR, type, compound);
(*cur_try_context)->current_catch = t;
 
/* Initialize the decl from the EXC_PTR_EXPR we get from the runtime. */
t = objc_build_exc_ptr (cur_try_context);
t = convert (TREE_TYPE (decl), t);
return build2 (MODIFY_EXPR, void_type_node, decl, t);
}
 
static void
finish_catch (struct objc_try_context **cur_try_context, tree current_catch)
{
append_to_statement_list (current_catch, &((*cur_try_context)->catch_list));
}
 
static tree
finish_try_stmt (struct objc_try_context **cur_try_context)
{
tree stmt;
struct objc_try_context *c = *cur_try_context;
/* If we're doing Darwin setjmp exceptions, build the big nasty. */
if (flag_objc_sjlj_exceptions)
{
bool save = in_late_binary_op;
in_late_binary_op = true;
if (!c->finally_body)
{
c->finally_locus = input_location;
c->end_finally_locus = input_location;
}
stmt = next_sjlj_build_try_catch_finally (cur_try_context);
in_late_binary_op = save;
}
else
/* This doesn't happen at the moment... but maybe one day... */
{
/* Otherwise, nest the CATCH inside a FINALLY. */
stmt = c->try_body;
if (c->catch_list)
stmt = build_stmt (c->try_locus, TRY_CATCH_EXPR, stmt, c->catch_list);
if (c->finally_body)
stmt = build_stmt (c->try_locus, TRY_FINALLY_EXPR, stmt, c->finally_body);
}
return stmt;
}
 
#include "gt-objc-objc-next-runtime-abi-01.h"
/gcc/objc/objc-runtime-shared-support.h
0,0 → 1,87
/* Support routines shared by all runtimes.
Copyright (C) 2011 Free Software Foundation, Inc.
Contributed by Iain Sandoe
 
This file is part of GCC.
 
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
 
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
 
#ifndef _OBJC_RUNTIME_SHARED_SUPPORT_H_
#define _OBJC_RUNTIME_SHARED_SUPPORT_H_
 
/* Left in obj-act.c for now... */
 
extern tree objc_start_struct (tree);
extern tree objc_finish_struct (tree, tree);
extern tree add_field_decl (tree, const char *, tree **);
extern tree build_sized_array_type (tree, int);
 
extern tree lookup_interface (tree);
extern tree objc_build_constructor (tree, VEC(constructor_elt,gc) *);
 
extern tree start_var_decl (tree, const char *);
extern void finish_var_decl (tree, tree);
 
extern tree my_build_string (int, const char *);
extern tree my_build_string_pointer (int, const char *);
extern tree add_objc_string (tree ident, string_section);
extern tree get_objc_string_decl (tree, string_section);
 
extern void add_class_reference (tree);
 
#ifdef OBJCPLUS
extern void objc_start_function (tree, tree, tree, tree);
extern tree objc_get_parm_info (int, tree);
#else
extern void objc_start_function (tree, tree, tree, struct c_arg_info *);
extern struct c_arg_info *objc_get_parm_info (int, tree);
#endif
extern void objc_push_parm (tree);
 
extern tree build_function_type_for_method (tree, tree, int, bool);
 
extern char *objc_build_property_setter_name (tree);
 
/* Stuff that should be migrated to shared support (or some v1-only file). */
extern void build_super_template (void);
 
extern tree objc_build_component_ref (tree, tree);
 
extern tree build_descriptor_table_initializer (tree, tree);
extern tree build_method_prototype_list_template (tree, int);
extern tree build_protocol_initializer (tree, tree, tree, tree, tree);
 
/* Moved or new routines in objc-runtime-shared-support.c */
 
extern tree build_selector (tree);
extern tree build_method_template (void);
extern tree build_method_prototype_template (void);
extern tree build_method_list_template (tree, int);
 
extern tree build_dispatch_table_initializer (tree, tree);
extern void diagnose_missing_method (tree, location_t);
extern void build_next_selector_translation_table (void);
extern void generate_protocol_references (tree);
extern void build_module_descriptor (long, tree);
extern tree build_ivar_list_initializer (tree, tree);
extern tree build_ivar_list_template (tree, int);
extern tree build_ivar_template (void);
 
extern void generate_strings (void);
 
extern void dump_interface (FILE *, tree);
extern FILE *gen_declaration_file;
 
#endif /* _OBJC_RUNTIME_SHARED_SUPPORT_H_ */
/gcc/objc/objc-next-runtime-abi-02.c
0,0 → 1,3768
/* Next Runtime (ABI-2) private.
Copyright (C) 2011 Free Software Foundation, Inc.
 
Contributed by Iain Sandoe and based, in part, on an implementation in
'branches/apple/trunk' contributed by Apple Computer Inc.
 
This file is part of GCC.
 
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
 
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
 
/* The NeXT ABI2 is used for m64 implementations on Darwin/OSX machines.
 
This version is intended to match (logically) the output of Apple's
4.2.1 compiler. */
 
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "tree.h"
 
#ifdef OBJCPLUS
#include "cp-tree.h"
#else
#include "c-tree.h"
#include "c-lang.h"
#endif
#include "langhooks.h"
#include "c-family/c-objc.h"
#include "objc-act.h"
 
/* When building Objective-C++, we are not linking against the C front-end
and so need to replicate the C tree-construction functions in some way. */
#ifdef OBJCPLUS
#define OBJCP_REMAP_FUNCTIONS
#include "objcp-decl.h"
#endif /* OBJCPLUS */
 
#include "ggc.h"
#include "target.h"
#include "tree-iterator.h"
 
#include "objc-runtime-hooks.h"
#include "objc-runtime-shared-support.h"
#include "objc-encoding.h"
 
/* ABI 2 Private definitions. */
#define DEF_CONSTANT_STRING_CLASS_NAME "NSConstantString"
 
#define TAG_GETCLASS "objc_getClass"
#define TAG_GETMETACLASS "objc_getMetaClass"
 
#define TAG_MSGSEND "objc_msgSend"
#define TAG_MSGSENDSUPER "objc_msgSendSuper"
#define TAG_MSGSEND_STRET "objc_msgSend_stret"
#define TAG_MSGSENDSUPER_STRET "objc_msgSendSuper_stret"
 
#define TAG_NEXT_EHVTABLE_NAME "objc_ehtype_vtable"
#define TAG_V2_EH_TYPE "objc_ehtype_t"
 
#define UTAG_V2_CLASS "_class_t"
#define UTAG_V2_CLASS_RO "_class_ro_t"
#define UTAG_V2_PROTOCOL "_protocol_t"
#define UTAG_V2_PROTOCOL_LIST "_protocol_list_t"
 
#define UTAG_V2_EH_TYPE "_objc_ehtype_t"
 
#define OBJC2_CLS_HAS_CXX_STRUCTORS 0x0004L
 
enum objc_v2_tree_index
{
/* Templates. */
OCTI_V2_CLS_TEMPL,
OCTI_V2_CAT_TEMPL,
OCTI_V2_CLS_RO_TEMPL,
OCTI_V2_PROTO_TEMPL,
OCTI_V2_IVAR_TEMPL,
OCTI_V2_IVAR_LIST_TEMPL,
OCTI_V2_MESSAGE_REF_TEMPL,
OCTI_V2_SUPER_MESSAGE_REF_TEMPL,
 
OCTI_V2_MESSAGE_SELECTOR_TYPE,
OCTI_V2_SUPER_MESSAGE_SELECTOR_TYPE,
OCTI_V2_IMP_TYPE,
OCTI_V2_SUPER_IMP_TYPE,
 
OCTI_V2_CACHE_DECL,
OCTI_V2_VTABLE_DECL,
 
OCTI_V2_PROPERTY_TEMPL,
 
/* V2 messaging. */
OCTI_V2_UMSG_FIXUP_DECL,
OCTI_V2_UMSG_STRET_FIXUP_DECL,
OCTI_V2_UMSG_ID_FIXUP_DECL,
OCTI_V2_UMSG_ID_STRET_FIXUP_DECL,
OCTI_V2_UMSG_SUPER2_FIXUP_DECL,
OCTI_V2_UMSG_SUPER2_STRET_FIXUP_DECL,
 
/* Exceptions - related. */
OCTI_V2_BEGIN_CATCH_DECL,
OCTI_V2_END_CATCH_DECL,
OCTI_V2_RETHROW_DECL,
 
OCTI_V2_MAX
};
 
#define objc_v2_class_template objc_v2_global_trees[OCTI_V2_CLS_TEMPL]
#define objc_v2_class_ro_template \
objc_v2_global_trees[OCTI_V2_CLS_RO_TEMPL]
#define objc_v2_category_template \
objc_v2_global_trees[OCTI_V2_CAT_TEMPL]
#define objc_v2_protocol_template \
objc_v2_global_trees[OCTI_V2_PROTO_TEMPL]
 
/* struct message_ref_t */
#define objc_v2_message_ref_template \
objc_v2_global_trees[OCTI_V2_MESSAGE_REF_TEMPL]
 
#define objc_v2_ivar_list_ptr objc_v2_global_trees[OCTI_V2_IVAR_LIST_TEMPL]
 
/* struct super_message_ref_t */
#define objc_v2_super_message_ref_template \
objc_v2_global_trees[OCTI_V2_SUPER_MESSAGE_REF_TEMPL]
 
/* struct message_ref_t* */
#define objc_v2_selector_type objc_v2_global_trees[OCTI_V2_MESSAGE_SELECTOR_TYPE]
/* struct super_super_message_ref_t */
#define objc_v2_super_selector_type \
objc_v2_global_trees[OCTI_V2_SUPER_MESSAGE_SELECTOR_TYPE]
#define objc_v2_imp_type objc_v2_global_trees[OCTI_V2_IMP_TYPE]
#define objc_v2_super_imp_type objc_v2_global_trees[OCTI_V2_SUPER_IMP_TYPE]
 
#define UOBJC_V2_CACHE_decl objc_v2_global_trees[OCTI_V2_CACHE_DECL]
#define UOBJC_V2_VTABLE_decl objc_v2_global_trees[OCTI_V2_VTABLE_DECL]
 
#define objc_v2_ivar_template objc_v2_global_trees[OCTI_V2_IVAR_TEMPL]
#define objc_v2_property_template \
objc_v2_global_trees[OCTI_V2_PROPERTY_TEMPL]
 
/* V2 Messaging */
 
/* objc_msgSend_fixup_rtp */
#define umsg_fixup_decl objc_v2_global_trees[OCTI_V2_UMSG_FIXUP_DECL]
/* objc_msgSend_stret_fixup_rtp */
#define umsg_stret_fixup_decl objc_v2_global_trees[OCTI_V2_UMSG_STRET_FIXUP_DECL]
/* objc_msgSendId_fixup_rtp */
#define umsg_id_fixup_decl objc_v2_global_trees[OCTI_V2_UMSG_ID_FIXUP_DECL]
/* objc_msgSendId_stret_fixup_rtp */
#define umsg_id_stret_fixup_decl \
objc_v2_global_trees[OCTI_V2_UMSG_ID_STRET_FIXUP_DECL]
/* objc_msgSendSuper2_fixup_rtp */
#define umsg_id_super2_fixup_decl \
objc_v2_global_trees[OCTI_V2_UMSG_SUPER2_FIXUP_DECL]
/* objc_msgSendSuper2_stret_fixup_rtp */
#define umsg_id_super2_stret_fixup_decl \
objc_v2_global_trees[OCTI_V2_UMSG_SUPER2_STRET_FIXUP_DECL]
 
#define objc2_begin_catch_decl objc_v2_global_trees[OCTI_V2_BEGIN_CATCH_DECL]
#define objc2_end_catch_decl objc_v2_global_trees[OCTI_V2_END_CATCH_DECL]
#define objc_rethrow_exception_decl \
objc_v2_global_trees[OCTI_V2_RETHROW_DECL]
 
/* rt_trees identifiers - shared between NeXT implementations. These allow
the FE to tag meta-data in a manner that survives LTO and can be used when
the runtime requires that certain meta-data items appear in particular
named sections. */
 
#include "objc-next-metadata-tags.h"
extern GTY(()) tree objc_rt_trees[OCTI_RT_META_MAX];
 
/* The OCTI_V2_... enumeration itself is in above. */
static GTY(()) tree objc_v2_global_trees[OCTI_V2_MAX];
 
static void next_runtime_02_initialize (void);
 
static void build_v2_message_ref_templates (void);
static void build_v2_class_templates (void);
static void build_v2_super_template (void);
static void build_v2_category_template (void);
static void build_v2_protocol_template (void);
 
static tree next_runtime_abi_02_super_superclassfield_id (void);
 
static tree next_runtime_abi_02_class_decl (tree);
static tree next_runtime_abi_02_metaclass_decl (tree);
static tree next_runtime_abi_02_category_decl (tree);
static tree next_runtime_abi_02_protocol_decl (tree);
static tree next_runtime_abi_02_string_decl (tree, const char *, string_section);
 
static tree next_runtime_abi_02_get_class_reference (tree);
static tree next_runtime_abi_02_build_selector_reference (location_t, tree, tree);
static tree next_runtime_abi_02_get_protocol_reference (location_t, tree);
static tree next_runtime_abi_02_build_ivar_ref (location_t, tree, tree);
static tree next_runtime_abi_02_get_class_super_ref (location_t, struct imp_entry *, bool);
static tree next_runtime_abi_02_get_category_super_ref (location_t, struct imp_entry *, bool);
 
static tree next_runtime_abi_02_receiver_is_class_object (tree);
static void next_runtime_abi_02_get_arg_type_list_base (VEC(tree,gc) **, tree,
int, int);
static tree next_runtime_abi_02_build_objc_method_call (location_t, tree, tree,
tree, tree, tree, int);
static bool next_runtime_abi_02_setup_const_string_class_decl (void);
static tree next_runtime_abi_02_build_const_string_constructor (location_t, tree, int);
 
static tree create_extern_decl (tree, const char *);
 
static void objc_generate_v2_next_metadata (void);
static bool objc2_objc_exception_attr (tree);
 
/* void build_v2_protocol_reference (tree);*/
static void build_v2_ehtype_template (void);
static void build_v2_eh_catch_objects (void);
static tree next_runtime_02_eh_type (tree);
static tree objc_eh_personality (void);
static tree build_throw_stmt (location_t, tree, bool);
static tree objc_build_exc_ptr (struct objc_try_context **);
static tree begin_catch (struct objc_try_context **, tree, tree, tree, bool);
static void finish_catch (struct objc_try_context **, tree);
static tree finish_try_stmt (struct objc_try_context **);
 
/* TODO: Use an objc-map. */
static GTY ((length ("SIZEHASHTABLE"))) hash *extern_names;
 
bool
objc_next_runtime_abi_02_init (objc_runtime_hooks *rthooks)
{
extern_names = ggc_alloc_cleared_vec_hash (SIZEHASHTABLE);
 
if (flag_objc_exceptions && flag_objc_sjlj_exceptions)
{
inform (UNKNOWN_LOCATION, "%<-fobjc-sjlj-exceptions%> is ignored for "
"%<-fnext-runtime%> when %<-fobjc-abi-version%> >= 2");
flag_objc_sjlj_exceptions = 0;
}
 
rthooks->initialize = next_runtime_02_initialize;
rthooks->default_constant_string_class_name = DEF_CONSTANT_STRING_CLASS_NAME;
rthooks->tag_getclass = TAG_GETCLASS;
rthooks->super_superclassfield_ident = next_runtime_abi_02_super_superclassfield_id;
 
rthooks->class_decl = next_runtime_abi_02_class_decl;
rthooks->metaclass_decl = next_runtime_abi_02_metaclass_decl;
rthooks->category_decl = next_runtime_abi_02_category_decl;
rthooks->protocol_decl = next_runtime_abi_02_protocol_decl;
rthooks->string_decl = next_runtime_abi_02_string_decl;
 
rthooks->get_class_reference = next_runtime_abi_02_get_class_reference;
rthooks->build_selector_reference = next_runtime_abi_02_build_selector_reference;
rthooks->get_protocol_reference = next_runtime_abi_02_get_protocol_reference;
rthooks->build_ivar_reference = next_runtime_abi_02_build_ivar_ref;
rthooks->get_class_super_ref = next_runtime_abi_02_get_class_super_ref;
rthooks->get_category_super_ref = next_runtime_abi_02_get_category_super_ref;
 
rthooks->receiver_is_class_object = next_runtime_abi_02_receiver_is_class_object;
rthooks->get_arg_type_list_base = next_runtime_abi_02_get_arg_type_list_base;
rthooks->build_objc_method_call = next_runtime_abi_02_build_objc_method_call;
 
rthooks->setup_const_string_class_decl =
next_runtime_abi_02_setup_const_string_class_decl;
rthooks->build_const_string_constructor =
next_runtime_abi_02_build_const_string_constructor;
 
rthooks->build_throw_stmt = build_throw_stmt;
rthooks->build_exc_ptr = objc_build_exc_ptr;
rthooks->begin_catch = begin_catch;
rthooks->finish_catch = finish_catch;
rthooks->finish_try_stmt = finish_try_stmt;
 
rthooks->generate_metadata = objc_generate_v2_next_metadata;
return true;
}
 
/* We need a way to convey what kind of meta-data are represented by a given
variable, since each type is expected (by the runtime) to be found in a
specific named section. The solution must be usable with LTO.
 
The scheme used for NeXT ABI 0/1 (partial matching of variable names) is not
satisfactory when LTO is used with ABI-2. We now tag ObjC meta-data with
identification attributes in the front end. The back-end may choose to act
on these as it requires. */
 
static void
next_runtime_abi_02_init_metadata_attributes (void)
{
if (!objc_meta)
objc_meta = get_identifier ("OBJC2META");
 
if (!meta_base)
meta_base = get_identifier ("V2_BASE");
 
meta_class = get_identifier ("G2_CLAS");
meta_metaclass = get_identifier ("G2_META");
meta_category =
meta_protocol = meta_base;
 
meta_clac_vars =
meta_clai_vars = meta_base;
 
meta_clac_meth =
meta_clai_meth =
meta_catc_meth =
meta_cati_meth =
meta_proto_cls_meth =
meta_proto_nst_meth = meta_base;
 
meta_clas_prot =
meta_catg_prot = meta_base;
 
meta_sel_refs = get_identifier ("V2_SRFS");
 
meta_class_name =
meta_meth_name =
meta_meth_type =
meta_prop_name_attr = get_identifier ("V2_STRG");
 
meta_mref = get_identifier ("V2_MREF");
meta_class_ref = get_identifier ("V2_CLRF");
meta_superclass_ref = get_identifier ("V2_SURF");
 
meta_label_classlist = get_identifier ("V2_CLAB");
meta_label_nonlazy_classlist = get_identifier ("V2_NLCL");
meta_label_categorylist = get_identifier ("V2_CALA");
meta_label_nonlazy_categorylist = get_identifier ("V2_NLCA");
 
meta_label_protocollist = get_identifier ("V2_PLST");
meta_proto_ref = get_identifier ("V2_PRFS");
 
meta_info = get_identifier ("V2_INFO");
 
meta_ehtype = get_identifier ("V2_EHTY");
 
meta_const_str = get_identifier ("V2_CSTR");
}
 
static void next_runtime_02_initialize (void)
{
tree type;
#ifdef OBJCPLUS
/* For all NeXT objc ABIs -fobjc-call-cxx-cdtors is on by
default. */
if (!global_options_set.x_flag_objc_call_cxx_cdtors)
global_options.x_flag_objc_call_cxx_cdtors = 1;
#endif
 
/* Set up attributes to be attached to the meta-data so that they
will be placed in the correct sections. */
next_runtime_abi_02_init_metadata_attributes ();
 
/* `struct objc_selector *' */
objc_selector_type = build_pointer_type (xref_tag (RECORD_TYPE,
get_identifier (TAG_SELECTOR)));
 
/* IMP : id (*) (id, _message_ref_t*, ...)
SUPER_IMP : id (*) ( super_t*, _super_message_ref_t*, ...)
objc_v2_selector_type. */
build_v2_message_ref_templates ();
 
objc_v2_ivar_list_ptr =
build_pointer_type (xref_tag (RECORD_TYPE,
get_identifier ("_ivar_list_t")));
 
objc_prop_list_ptr =
build_pointer_type (xref_tag (RECORD_TYPE,
get_identifier ("_prop_list_t")));
 
build_v2_class_templates ();
build_v2_super_template ();
build_v2_protocol_template ();
build_v2_category_template ();
 
/* id objc_msgSend_fixup_rtp (id, struct message_ref_t*, ...); */
type = build_varargs_function_type_list (objc_object_type,
objc_object_type,
objc_v2_selector_type,
NULL_TREE);
umsg_fixup_decl = add_builtin_function ("objc_msgSend_fixup",
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
TREE_NOTHROW (umsg_fixup_decl) = 0;
 
/* id objc_msgSend_stret_fixup_rtp (id, struct message_ref_t*, ...); */
umsg_stret_fixup_decl = add_builtin_function ("objc_msgSend_stret_fixup",
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
TREE_NOTHROW (umsg_stret_fixup_decl) = 0;
 
/* id objc_msgSendId_fixup_rtp (id, struct message_ref_t*, ...); */
umsg_id_fixup_decl = add_builtin_function ("objc_msgSendId_fixup",
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
TREE_NOTHROW (umsg_id_fixup_decl) = 0;
 
/* id objc_msgSendId_stret_fixup_rtp
(id, struct message_ref_t*, ...); */
umsg_id_stret_fixup_decl = add_builtin_function ("objc_msgSendId_stret_fixup",
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
TREE_NOTHROW (umsg_id_stret_fixup_decl) = 0;
 
/* id objc_msgSendSuper2_fixup_rtp
(struct objc_super *, struct message_ref_t*, ...); */
type = build_varargs_function_type_list (objc_object_type,
objc_super_type,
objc_v2_super_selector_type,
NULL_TREE);
umsg_id_super2_fixup_decl = add_builtin_function ("objc_msgSendSuper2_fixup",
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
TREE_NOTHROW (umsg_id_super2_fixup_decl) = 0;
 
/* id objc_msgSendSuper2_stret_fixup_rtp
(struct objc_super *, struct message_ref_t*, ...); */
umsg_id_super2_stret_fixup_decl =
add_builtin_function ("objc_msgSendSuper2_stret_fixup",
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
TREE_NOTHROW (umsg_id_super2_stret_fixup_decl) = 0;
 
/* Present in the library, but unused by the FE. */
/* Protocol *objc_getProtocol (const char *)
type = build_function_type_list (objc_protocol_type,
const_string_type_node,
NULL_TREE);
objc_v2_getprotocol_decl = add_builtin_function ("objc_getProtocol",
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
TREE_NOTHROW (objc_v2_getprotocol_decl) = 0;*/
 
UOBJC_V2_CACHE_decl = create_extern_decl (ptr_type_node,
"_objc_empty_cache");
 
UOBJC_V2_VTABLE_decl = create_extern_decl (objc_v2_imp_type,
"_objc_empty_vtable");
 
/* id objc_getClass (const char *); */
type = build_function_type_list (objc_object_type,
const_string_type_node,
NULL_TREE);
objc_get_class_decl = add_builtin_function (TAG_GETCLASS,
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
 
/* id objc_getMetaClass (const char *); */
objc_get_meta_class_decl = add_builtin_function (TAG_GETMETACLASS,
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
 
/* This is the type of all of the following functions
objc_copyStruct(). */
type = build_function_type_list (void_type_node,
ptr_type_node,
const_ptr_type_node,
ptrdiff_type_node,
boolean_type_node,
boolean_type_node,
NULL_TREE);
/* Declare the following function:
void
objc_copyStruct (void *destination, const void *source,
ptrdiff_t size, BOOL is_atomic, BOOL has_strong); */
objc_copyStruct_decl = add_builtin_function ("objc_copyStruct",
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
TREE_NOTHROW (objc_copyStruct_decl) = 0;
objc_getPropertyStruct_decl = NULL_TREE;
objc_setPropertyStruct_decl = NULL_TREE;
 
gcc_assert (!flag_objc_sjlj_exceptions);
 
/* Although we warn that fobjc-exceptions is required for exceptions
code, we carry on and create it anyway. */
 
/* This can be required, even when exceptions code is not present,
when an __attribute__((objc_exception)) is applied to a
class. */
build_v2_ehtype_template ();
 
/* void * objc_begin_catch (void *) */
type = build_function_type_list (ptr_type_node,
ptr_type_node, NULL_TREE);
 
objc2_begin_catch_decl = add_builtin_function ("objc_begin_catch",
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
TREE_NOTHROW (objc2_begin_catch_decl) = 0;
 
/* void objc_end_catch () */
type = build_function_type_list (void_type_node, NULL_TREE);
objc2_end_catch_decl = add_builtin_function ("objc_end_catch",
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
TREE_NOTHROW (objc2_end_catch_decl) = 0;
 
/* void objc_exception_rethrow (void) */
objc_rethrow_exception_decl =
add_builtin_function ("objc_exception_rethrow",
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
TREE_NOTHROW (objc_rethrow_exception_decl) = 0;
using_eh_for_cleanups ();
lang_hooks.eh_runtime_type = next_runtime_02_eh_type;
lang_hooks.eh_personality = objc_eh_personality;
}
 
/* NOTE --- templates --- */
 
/* Set 'objc_v2_message_ref_template' to the data type node for
'struct _message_ref_t'. This needs to be done just once per
compilation. Also Set 'objc_v2_super_message_ref_template' to data
type node for 'struct _super_message_ref_t'. */
 
/* struct _message_ref_t
{
IMP messenger;
SEL name;
};
where IMP is: id (*) (id, _message_ref_t*, ...)
*/
 
/* struct _super_message_ref_t
{
SUPER_IMP messenger;
SEL name;
};
where SUPER_IMP is: id (*) ( super_t*, _super_message_ref_t*, ...)
*/
 
static void
build_v2_message_ref_templates (void)
{
tree ptr_message_ref_t;
tree decls, *chain = NULL;
 
/* struct _message_ref_t {...} */
objc_v2_message_ref_template =
objc_start_struct (get_identifier ("_message_ref_t"));
 
/* IMP messenger; */
ptr_message_ref_t =
build_pointer_type (xref_tag (RECORD_TYPE,
get_identifier ("_message_ref_t")));
 
objc_v2_imp_type =
build_pointer_type (build_function_type_list
(objc_object_type,
objc_object_type,
ptr_message_ref_t,
NULL_TREE));
 
decls = add_field_decl (objc_v2_imp_type, "messenger", &chain);
 
/* SEL name; */
add_field_decl (objc_selector_type, "name", &chain);
 
objc_finish_struct (objc_v2_message_ref_template, decls);
 
objc_v2_selector_type = build_pointer_type (objc_v2_message_ref_template);
 
chain = NULL;
/* struct _super_message_ref_t {...} */
objc_v2_super_message_ref_template =
objc_start_struct (get_identifier ("_super_message_ref_t"));
 
/* SUPER_IMP messenger; */
ptr_message_ref_t = build_pointer_type
(xref_tag (RECORD_TYPE,
get_identifier ("_super_message_ref_t")));
 
objc_v2_super_imp_type =
build_pointer_type (build_function_type_list
(objc_object_type,
objc_super_type,
ptr_message_ref_t,
NULL_TREE));
 
add_field_decl (objc_v2_super_imp_type, "messenger", &chain);
 
/* SEL name; */
add_field_decl (objc_selector_type, "name", &chain);
 
objc_finish_struct (objc_v2_super_message_ref_template, decls);
objc_v2_super_selector_type =
build_pointer_type (objc_v2_super_message_ref_template);
}
 
/* Build following types which represent each class implementation.
 
struct class_ro_t
{
uint32_t const flags;
uint32_t const instanceStart;
uint32_t const instanceSize;
#ifdef __LP64__
uint32_t const reserved;
#endif
const uint8_t * const ivarLayout;
const char *const name;
const struct method_list_t * const baseMethods;
const struct objc_protocol_list *const baseProtocols;
const struct ivar_list_t *const ivars;
const uint8_t * const weakIvarLayout;
const struct _prop_list_t * const properties;
};
 
struct class_t
{
struct class_t *isa;
struct class_t *superclass;
void *cache;
IMP *vtable;
 
...When this is active - it will point to a rw version, but
when we build the meta-data we point it to the ro...
struct class_ro_t *data;
};
 
*/
 
static void
build_v2_class_templates (void)
{
tree cnst_strg_type;
tree decls, *chain = NULL;
 
/* struct class_ro_t {...} */
objc_v2_class_ro_template =
objc_start_struct (get_identifier (UTAG_V2_CLASS_RO));
 
/* uint32_t const flags; */
decls = add_field_decl (integer_type_node, "flags", &chain);
 
/* uint32_t const instanceStart; */
add_field_decl (integer_type_node, "instanceStart", &chain);
 
/* uint32_t const instanceSize; */
add_field_decl (integer_type_node, "instanceSize", &chain);
 
/* This ABI is currently only used on m64 NeXT. We always
explicitly declare the alignment padding. */
/* uint32_t const reserved; */
add_field_decl (integer_type_node, "reserved", &chain);
 
/* const uint8_t * const ivarLayout; */
cnst_strg_type = build_pointer_type (unsigned_char_type_node);
add_field_decl (cnst_strg_type, "ivarLayout", &chain);
 
/* const char *const name; */
add_field_decl (string_type_node, "name", &chain);
 
/* const struct method_list_t * const baseMethods; */
add_field_decl (objc_method_list_ptr, "baseMethods", &chain);
 
/* const struct objc_protocol_list *const baseProtocols; */
add_field_decl (build_pointer_type
(xref_tag (RECORD_TYPE,
get_identifier (UTAG_V2_PROTOCOL_LIST))),
"baseProtocols", &chain);
 
/* const struct ivar_list_t *const ivars; */
add_field_decl (objc_v2_ivar_list_ptr, "ivars", &chain);
 
/* const uint8_t * const weakIvarLayout; */
add_field_decl (cnst_strg_type, "weakIvarLayout", &chain);
 
/* struct _prop_list_t * baseProperties; */
add_field_decl (objc_prop_list_ptr, "baseProperties", &chain);
 
objc_finish_struct (objc_v2_class_ro_template, decls);
 
chain = NULL;
/* struct class_t {...} */
objc_v2_class_template =
objc_start_struct (get_identifier (UTAG_V2_CLASS));
 
/* struct class_t *isa; */
decls = add_field_decl (build_pointer_type (objc_v2_class_template),
"isa", &chain);
 
/* struct class_t * const superclass; */
add_field_decl (build_pointer_type (objc_v2_class_template),
"superclass", &chain);
 
/* void *cache; */
add_field_decl (build_pointer_type (void_type_node), "cache", &chain);
 
/* IMP *vtable; */
add_field_decl (build_pointer_type (objc_v2_imp_type), "vtable", &chain);
 
/* struct class_ro_t *ro; */
add_field_decl (build_pointer_type (objc_v2_class_ro_template), "ro", &chain);
 
objc_finish_struct (objc_v2_class_template, decls);
}
 
/* struct _objc_super
{
struct _objc_object *self;
Class cls;
}; */
void
build_v2_super_template (void)
{
tree decls, *chain = NULL;
 
objc_super_template = objc_start_struct (get_identifier (UTAG_SUPER));
 
/* struct _objc_object *self; */
decls = add_field_decl (objc_object_type, "self", &chain);
 
/* Class cls; */
add_field_decl (objc_class_type, "cls", &chain);
 
objc_finish_struct (objc_super_template, decls);
}
 
/* struct protocol_t
{
Class isa;
const char * const protocol_name;
const struct protocol_list_t * const protocol_list;
const struct method_list_t * const instance_methods;
const struct method_list_t * const class_methods;
const struct method_list_t * optionalInstanceMethods;
const struct method_list_t * optionalClassMethod
const struct _prop_list_t * const properties;
const uint32_t size;
const uint32_t flags;
}
*/
static void
build_v2_protocol_template (void)
{
tree decls, *chain = NULL;
 
objc_v2_protocol_template =
objc_start_struct (get_identifier (UTAG_V2_PROTOCOL));
 
/* Class isa; */
decls = add_field_decl (objc_object_type, "isa", &chain);
 
/* char *protocol_name; */
add_field_decl (string_type_node, "protocol_name", &chain);
 
/* const struct protocol_list_t * const protocol_list; */
add_field_decl (build_pointer_type (objc_v2_protocol_template),
"protocol_list", &chain);
 
/* const struct method_list_t * const instance_methods; */
add_field_decl (objc_method_proto_list_ptr, "instance_methods", &chain);
 
/* const struct method_list_t * const class_methods; */
add_field_decl (objc_method_proto_list_ptr, "class_methods", &chain);
 
/* const struct method_list_t * optionalInstanceMethods; */
add_field_decl (objc_method_proto_list_ptr, "optionalInstanceMethods", &chain);
 
/* const struct method_list_t * optionalClassMethods; */
add_field_decl (objc_method_proto_list_ptr, "optionalClassMethods", &chain);
 
/* struct _prop_list_t * properties; */
add_field_decl (objc_prop_list_ptr, "properties", &chain);
 
/* const uint32_t size; */
add_field_decl (integer_type_node, "size", &chain);
 
/* const uint32_t flags; */
add_field_decl (integer_type_node, "flags", &chain);
 
objc_finish_struct (objc_v2_protocol_template, decls);
}
 
/* Build type for a category:
struct category_t
{
const char * const name;
struct class_t *const cls;
const struct method_list_t * const instance_methods;
const struct method_list_t * const class_methods;
const struct protocol_list_t * const protocols;
const struct _prop_list_t * const properties;
}
*/
 
static void
build_v2_category_template (void)
{
tree decls, *chain = NULL;
 
objc_v2_category_template =
objc_start_struct (get_identifier ("_category_t"));
 
/* char *name; */
decls = add_field_decl (string_type_node, "name", &chain);
 
/* struct class_t *const cls; */
add_field_decl (build_pointer_type (objc_v2_class_template), "cls", &chain);
 
/* struct method_list_t *instance_methods; */
add_field_decl (objc_method_list_ptr, "instance_methods", &chain);
 
/* struct method_list_t *class_methods; */
add_field_decl (objc_method_list_ptr, "class_methods", &chain);
 
/* struct protocol_list_t *protocol_list; */
add_field_decl (build_pointer_type (objc_v2_protocol_template),
"protocol_list", &chain );
 
/* struct _prop_list_t * properties; */
add_field_decl (objc_prop_list_ptr, "properties", &chain);
 
objc_finish_struct (objc_v2_category_template, decls);
}
 
/* NOTE --- Decls, Identifiers, Names etc. --- */
 
/* This routine is given a name and returns a matching extern variable
if one is found. */
 
static tree
hash_name_lookup (hash *hashlist, tree name)
{
hash target;
 
target = hashlist[IDENTIFIER_HASH_VALUE (name) % SIZEHASHTABLE];
 
while (target)
{
if (name == DECL_NAME (target->key))
return target->key;
 
target = target->next;
}
return 0;
}
 
/* This routine is given an extern variable and enters it in its hash
table. Note that hashing is done on its inner IDENTIFIER_NODE
node. */
 
static void
hash_name_enter (hash *hashlist, tree id)
{
hash obj;
int slot = IDENTIFIER_HASH_VALUE (DECL_NAME (id)) % SIZEHASHTABLE;
 
obj = ggc_alloc_hashed_entry ();
obj->list = 0;
obj->next = hashlist[slot];
obj->key = id;
 
hashlist[slot] = obj; /* append to front */
}
 
/* Create a declaration "extern <type> <name>;"
The var will need to be finalized (e.g. by calling finish_var_decl()). */
 
static tree
create_extern_decl (tree type, const char *name)
{
tree id = get_identifier (name);
tree var = hash_name_lookup (extern_names, id);
if (var)
return var;
/* New name. */
var = start_var_decl (type, name);
TREE_STATIC (var) = 0;
DECL_EXTERNAL (var) = 1;
TREE_PUBLIC (var) = 1;
hash_name_enter (extern_names, var);
return var;
}
 
/* Create a globally visible definition for variable NAME of a given TYPE. The
finish_var_decl() routine will need to be called on it afterwards. */
 
static tree
create_global_decl (tree type, const char *name)
{
tree id = get_identifier (name);
tree var = hash_name_lookup (extern_names, id);
if (var)
{
DECL_EXTERNAL (var) = 0;
TREE_STATIC (var) = 1;
}
else
{
var = start_var_decl (type, name);
hash_name_enter (extern_names, var);
}
TREE_PUBLIC (var) = 1;
return var;
}
 
/* Create a symbol with __attribute__ ((visibility ("hidden")))
attribute (private extern). */
 
static tree
create_hidden_decl (tree type, const char *name)
{
tree decl = create_global_decl (type, name);
DECL_VISIBILITY (decl) = VISIBILITY_HIDDEN;
DECL_VISIBILITY_SPECIFIED (decl) = 1;
return decl;
}
 
/* Irritatingly, we have a different superclass field name for ABI=2. */
/* PS/TODO: The field name does not matter, it is only used internally
by the compiler. We can rename it to whatever we want. ;-) */
 
static tree
next_runtime_abi_02_super_superclassfield_id (void)
{
/* TODO: Simplify. Just always return get_identifier ("cls"), or at
most look it once at startup then always return it. */
if (!super_superclassfield_id)
super_superclassfield_id = get_identifier ("cls");
return super_superclassfield_id;
}
 
static tree
next_runtime_abi_02_class_decl (tree klass)
{
tree decl;
char buf[BUFSIZE];
snprintf (buf, BUFSIZE, "OBJC_CLASS_$_%s",
IDENTIFIER_POINTER (CLASS_NAME (klass)));
/* ObjC2 classes are extern visible. */
decl = create_global_decl (objc_v2_class_template, buf);
OBJCMETA (decl, objc_meta, meta_class);
return decl;
}
 
static tree
next_runtime_abi_02_metaclass_decl (tree klass)
{
tree decl;
char buf[BUFSIZE];
snprintf (buf, BUFSIZE, "OBJC_METACLASS_$_%s",
IDENTIFIER_POINTER (CLASS_NAME (klass)));
/* ObjC2 classes are extern visible. */
decl = create_global_decl (objc_v2_class_template, buf);
OBJCMETA (decl, objc_meta, meta_metaclass);
return decl;
}
 
static tree
next_runtime_abi_02_category_decl (tree klass)
{
tree decl;
char buf[BUFSIZE];
snprintf (buf, BUFSIZE, "_OBJC_Category_%s_on_%s",
IDENTIFIER_POINTER (CLASS_SUPER_NAME (klass)),
IDENTIFIER_POINTER (CLASS_NAME (klass)));
decl = start_var_decl (objc_v2_category_template, buf);
OBJCMETA (decl, objc_meta, meta_category);
return decl;
}
 
static tree
next_runtime_abi_02_protocol_decl (tree p)
{
tree decl;
char buf[BUFSIZE];
 
/* static struct _objc_protocol _OBJC_Protocol_<mumble>; */
snprintf (buf, BUFSIZE, "_OBJC_Protocol_%s",
IDENTIFIER_POINTER (PROTOCOL_NAME (p)));
decl = start_var_decl (objc_v2_protocol_template, buf);
OBJCMETA (decl, objc_meta, meta_protocol);
return decl;
}
 
static tree
next_runtime_abi_02_string_decl (tree type, const char *name, string_section where)
{
tree var = start_var_decl (type, name);
switch (where)
{
case class_names:
OBJCMETA (var, objc_meta, meta_class_name);
break;
case meth_var_names:
OBJCMETA (var, objc_meta, meta_meth_name);
break;
case meth_var_types:
OBJCMETA (var, objc_meta, meta_meth_type);
break;
case prop_names_attr:
OBJCMETA (var, objc_meta, meta_prop_name_attr);
break;
default:
OBJCMETA (var, objc_meta, meta_base);
break;
}
return var;
}
 
/* NOTE --- entry --- */
 
typedef struct GTY(()) ident_data_tuple {
tree ident;
tree data;
} ident_data_tuple ;
DEF_VEC_O(ident_data_tuple);
DEF_VEC_ALLOC_O(ident_data_tuple, gc);
 
/* This routine creates a file scope static variable of type 'Class'
to hold the address of a class. */
 
static tree
build_v2_class_reference_decl (tree ident)
{
tree decl;
char buf[BUFSIZE];
 
snprintf (buf, BUFSIZE, "_OBJC_ClassRef_%s", IDENTIFIER_POINTER (ident));
decl = start_var_decl (objc_class_type, buf);
OBJCMETA (decl, objc_meta, meta_class_ref);
return decl;
}
 
/* This routine builds a class refs entry for each class name used.
Initially, a (static-ref, IDENT) tuple is added to the list. The
ident is replaced with address of the class metadata (of type
'Class') in the output routine. */
 
static GTY (()) VEC (ident_data_tuple, gc) * classrefs;
 
static tree
objc_v2_get_class_reference (tree ident)
{
tree decl;
ident_data_tuple e;
if (classrefs)
{
int count;
ident_data_tuple *ref;
FOR_EACH_VEC_ELT (ident_data_tuple, classrefs, count, ref)
{
if (ref->ident == ident)
{
if (!ref->data)
ref->data = build_v2_class_reference_decl (ident);
return ref->data;
}
}
}
else
/* Somewhat arbitrary initial provision. */
classrefs = VEC_alloc (ident_data_tuple, gc, 16);
 
/* We come here if we don't find the entry - or if the table was yet
to be created. */
decl = build_v2_class_reference_decl (ident);
e.ident = ident;
e.data = decl;
VEC_safe_push (ident_data_tuple, gc, classrefs, &e);
return decl;
}
 
static tree
next_runtime_abi_02_get_class_reference (tree ident)
{
if (!flag_zero_link)
return objc_v2_get_class_reference (ident);
else
{
/* We fall back to using objc_getClass (). */
VEC(tree,gc) *vec = VEC_alloc (tree, gc, 1);
tree t;
/* ??? add_class_reference (ident); - is pointless, since the
system lib does not export the equivalent symbols. Maybe we
need to build a class ref anyway. */
t = my_build_string_pointer (IDENTIFIER_LENGTH (ident) + 1,
IDENTIFIER_POINTER (ident));
VEC_quick_push (tree, vec, t);
t = build_function_call_vec (input_location, objc_get_class_decl,
vec, NULL);
VEC_free (tree, gc, vec);
return t;
}
}
 
/* Used by build_function_type_for_method. Append the types for
receiver & _cmd at the start of a method argument list to ARGTYPES.
CONTEXT is either METHOD_DEF or METHOD_REF, saying whether we are
trying to define a method or call one. SUPERFLAG says this is for a
send to super. METH may be NULL, in the case that there is no
prototype. */
 
static void
next_runtime_abi_02_get_arg_type_list_base (VEC(tree,gc) **argtypes, tree meth,
int context, int superflag)
{
tree receiver_type;
 
if (superflag)
receiver_type = objc_super_type;
else if (context == METHOD_DEF && TREE_CODE (meth) == INSTANCE_METHOD_DECL)
receiver_type = objc_instance_type;
else
receiver_type = objc_object_type;
 
VEC_safe_push (tree, gc, *argtypes, receiver_type);
/* Selector type - will eventually change to `int'. */
VEC_safe_push (tree, gc, *argtypes,
(superflag
? objc_v2_super_selector_type
: objc_v2_selector_type));
}
 
/* TODO: Merge this with the message refs. */
static tree
build_selector_reference_decl (tree ident)
{
tree decl;
char *t, buf[BUFSIZE];
 
snprintf (buf, BUFSIZE, "_OBJC_SelRef_%s", IDENTIFIER_POINTER (ident));
t = buf;
while (*t)
{
if (*t==':')
*t = '$'; /* Underscore would clash between foo:bar and foo_bar. */
t++;
}
decl = start_var_decl (objc_selector_type, buf);
OBJCMETA (decl, objc_meta, meta_sel_refs);
return decl;
}
 
static tree
next_runtime_abi_02_build_selector_reference (location_t loc ATTRIBUTE_UNUSED,
tree ident,
tree proto ATTRIBUTE_UNUSED)
{
tree *chain = &sel_ref_chain;
tree expr;
 
while (*chain)
{
if (TREE_VALUE (*chain) == ident)
return TREE_PURPOSE (*chain);
 
chain = &TREE_CHAIN (*chain);
}
 
expr = build_selector_reference_decl (ident);
*chain = tree_cons (expr, ident, NULL_TREE);
 
return expr;
}
 
/* Declare a variable of type 'struct message_ref_t'. */
/* This will be finished in build_v2_message_ref_translation_table ().
We take an idea from LLVM in making the names a bit more connected
and thus the asm more readable. */
 
static tree
build_v2_message_reference_decl (tree sel_name, tree message_func_ident)
{
tree decl;
char buf[BUFSIZE], *t;
int offset = 12;
 
/* Skip past the objc_msgSend it's the same for all... */
if (IDENTIFIER_POINTER (message_func_ident)[offset] == '_')
offset++;
 
snprintf (buf, BUFSIZE, "_OBJC_MsgRef_%s_%s",
&(IDENTIFIER_POINTER (message_func_ident)[offset]),
IDENTIFIER_POINTER (sel_name));
t = buf;
while (*t)
{
if (*t==':')
*t = '$'; /* Underscore would clash between foo:bar and foo_bar. */
t++;
}
decl = start_var_decl (objc_v2_message_ref_template, buf);
OBJCMETA (decl, objc_meta, meta_mref);
return decl;
}
 
typedef struct GTY(()) msgref_entry {
tree func;
tree selname;
tree refdecl;
} msgref_entry;
DEF_VEC_O(msgref_entry);
DEF_VEC_ALLOC_O(msgref_entry, gc);
 
static GTY (()) VEC (msgref_entry, gc) * msgrefs;
 
/* Build the list of (objc_msgSend_fixup_xxx, selector name), used
later on to initialize the table of 'struct message_ref_t'
elements. */
 
static tree
build_v2_selector_messenger_reference (tree sel_name, tree message_func_decl)
{
tree decl;
msgref_entry e;
if (msgrefs)
{
int count;
msgref_entry *ref;
FOR_EACH_VEC_ELT (msgref_entry, msgrefs, count, ref)
if (ref->func == message_func_decl && ref->selname == sel_name)
return ref->refdecl;
}
else
/* Somewhat arbitrary initial provision. */
msgrefs = VEC_alloc (msgref_entry, gc, 32);
 
/* We come here if we don't find a match or at the start. */
decl = build_v2_message_reference_decl (sel_name,
DECL_NAME (message_func_decl));
e.func = message_func_decl;
e.selname = sel_name;
e.refdecl = decl;
VEC_safe_push (msgref_entry, gc, msgrefs, &e);
return decl;
}
 
static tree
build_v2_protocollist_ref_decl (tree protocol)
{
tree decl;
tree protocol_ident = PROTOCOL_NAME (protocol);
char buf[BUFSIZE];
 
snprintf (buf, BUFSIZE, "_OBJC_ProtocolRef_%s",
IDENTIFIER_POINTER (protocol_ident));
/* TODO: other compiler versions make these hidden & weak. */
decl = create_global_decl (objc_protocol_type, buf);
/* Let optimizer know that this decl is not removable. */
DECL_PRESERVE_P (decl) = 1;
OBJCMETA (decl, objc_meta, meta_proto_ref);
return decl;
}
 
typedef struct GTY(()) prot_list_entry {
tree id;
tree refdecl;
} prot_list_entry;
DEF_VEC_O(prot_list_entry);
DEF_VEC_ALLOC_O(prot_list_entry, gc);
static GTY (()) VEC (prot_list_entry, gc) * protrefs;
 
static tree
objc_v2_get_protocol_reference (tree ident)
{
tree decl;
prot_list_entry e;
if (protrefs)
{
int count;
prot_list_entry *ref;
FOR_EACH_VEC_ELT (prot_list_entry, protrefs, count, ref)
{
if (ref->id == ident)
{
if (!ref->refdecl)
ref->refdecl = build_v2_protocollist_ref_decl (ident);
return ref->refdecl;
}
}
}
else
/* Somewhat arbitrary initial provision. */
protrefs = VEC_alloc (prot_list_entry, gc, 32);
 
/* We come here if we don't find the entry - or if the table was yet
to be created. */
decl = build_v2_protocollist_ref_decl (ident);
e.id = ident;
e.refdecl = decl;
VEC_safe_push (prot_list_entry, gc, protrefs, &e);
return decl;
}
 
static tree
next_runtime_abi_02_get_protocol_reference (location_t loc ATTRIBUTE_UNUSED,
tree p)
{
if (!PROTOCOL_FORWARD_DECL (p))
PROTOCOL_FORWARD_DECL (p) = next_runtime_abi_02_protocol_decl (p);
 
return objc_v2_get_protocol_reference (p);
}
 
/* This routine returns the ivar declaration, if component is a valid
ivar field; NULL_TREE otherwise. On finding an ivar, it also
returns the class name in CLASS. */
 
static tree
objc_is_ivar (tree expr, tree component, tree *klass)
{
tree field = NULL_TREE;
tree basetype = TYPE_MAIN_VARIANT (TREE_TYPE (expr));
 
if (TREE_CODE (basetype) == RECORD_TYPE
&& TYPE_HAS_OBJC_INFO (basetype) && TYPE_OBJC_INTERFACE (basetype))
{
*klass = lookup_interface (OBJC_TYPE_NAME (basetype));
if (*klass)
{
do
{
tree ivar_chain = CLASS_RAW_IVARS (*klass);
if (ivar_chain)
{
field = is_ivar (ivar_chain, component);
if (field != NULL_TREE)
break;
}
*klass = lookup_interface (CLASS_SUPER_NAME (*klass));
}
while (*klass);
}
}
return field;
}
 
static void
create_ivar_offset_name (char *buf, tree class_name, tree field_decl)
{
tree fname = DECL_NAME (field_decl);
 
sprintf (buf, "OBJC_IVAR_$_%s.%s", IDENTIFIER_POINTER (class_name),
IDENTIFIER_POINTER (fname));
return;
}
 
/* This routine generates new abi's ivar reference tree. It amounts
to generating *(TYPE*)((char*)pObj + OFFSET_IVAR) when we normally
generate pObj->IVAR. OFFSET_IVAR is an 'extern' variable holding
the offset for 'IVAR' field. TYPE is type of IVAR field. */
 
static tree
objc_v2_build_ivar_ref (tree datum, tree component)
{
tree field, ref, class_name, offset, ftype, expr;
char var_offset_name[512];
 
field = objc_is_ivar (datum, component, &class_name);
if (!field)
return NULL_TREE;
 
/* This routine only handles non-bitfield fields */
/* DECL_INITIAL macro is set to width of bitfield and can be relied
on to check for bitfield ivars. Note that I cannot rely on
DECL_BIT_FIELD macro because it is only set when the whole struct
is seen (at finish_struct) and not when the ivar chain is
built. */
if (DECL_INITIAL (field))
return NULL_TREE;
 
create_ivar_offset_name (var_offset_name, CLASS_NAME (class_name), field);
 
offset = create_extern_decl (TREE_TYPE (size_zero_node), var_offset_name);
 
ftype = TREE_TYPE (field);
 
/* (char*)datum */
expr = build_c_cast (input_location,
string_type_node, build_fold_addr_expr (datum));
 
/* (char*)datum + offset */
expr = fold_build_pointer_plus_loc (input_location, expr, offset);
 
/* (ftype*)((char*)datum + offset) */
expr = build_c_cast (input_location, build_pointer_type (ftype), expr);
 
/* Finally: *(ftype*)((char*)datum + offset) */
ref = build_indirect_ref (input_location, expr, RO_UNARY_STAR);
 
/* We must set type of the resulting expression to be the same as
the field type. This is because, build_indirect_ref (...)
rebuilds the type which may result in lost information; as in the
case of protocol-qualified types (id <protocol> ). */
TREE_TYPE (ref) = ftype;
 
if (TREE_READONLY (datum) || TREE_READONLY (field))
TREE_READONLY (ref) = 1;
 
if (TREE_THIS_VOLATILE (datum) || TREE_THIS_VOLATILE (field))
TREE_THIS_VOLATILE (ref) = 1;
 
if (TREE_DEPRECATED (field))
warn_deprecated_use (field, NULL_TREE);
 
return ref;
}
 
/* IVAR refs are made via an externally referenceable offset and built
on the fly. That is, unless they refer to (private) fields in the
class stucture. */
static tree
next_runtime_abi_02_build_ivar_ref (location_t loc ATTRIBUTE_UNUSED,
tree base, tree id)
{
tree ivar;
if ((ivar = objc_v2_build_ivar_ref (base, id)))
return ivar;
return objc_build_component_ref (base, id);
}
 
/* [super ...] references are listed here (and built into a table at
meta -data emit time). */
static tree
build_v2_superclass_ref_decl (tree ident, bool inst)
{
tree decl;
char buf[BUFSIZE];
 
snprintf (buf, BUFSIZE, "_OBJC_%sSuperRef_%s", (inst?"":"Meta"),
IDENTIFIER_POINTER (ident));
decl = start_var_decl (objc_class_type, buf);
OBJCMETA (decl, objc_meta, meta_superclass_ref);
return decl;
}
 
static GTY (()) VEC (ident_data_tuple, gc) * class_super_refs;
static GTY (()) VEC (ident_data_tuple, gc) * metaclass_super_refs;
 
static tree
next_runtime_abi_02_get_class_super_ref (location_t loc ATTRIBUTE_UNUSED,
struct imp_entry *imp, bool inst_meth)
{
tree decl;
ident_data_tuple e;
tree id = CLASS_NAME (imp->imp_context);
VEC (ident_data_tuple, gc) *list = inst_meth ? class_super_refs
: metaclass_super_refs;
 
if (list)
{
int count;
ident_data_tuple *ref;
FOR_EACH_VEC_ELT (ident_data_tuple, list, count, ref)
{
if (ref->ident == id)
{
if (!ref->data)
ref->data = build_v2_superclass_ref_decl (id, inst_meth);
return ref->data;
}
}
}
else
{
/* Somewhat arbitrary initial provision. */
if (inst_meth)
list = class_super_refs = VEC_alloc (ident_data_tuple, gc, 16);
else
list = metaclass_super_refs = VEC_alloc (ident_data_tuple, gc, 16);
}
/* We come here if we don't find the entry - or if the table was yet
to be created. */
decl = build_v2_superclass_ref_decl (id, inst_meth);
e.ident = id;
e.data = decl;
VEC_safe_push (ident_data_tuple, gc, list, &e);
return decl;
}
 
static tree
next_runtime_abi_02_get_category_super_ref (location_t loc ATTRIBUTE_UNUSED,
struct imp_entry *imp, bool inst_meth)
{
/* ??? is this OK when zero-link = true? */
tree super_name = CLASS_SUPER_NAME (imp->imp_template);
tree super_class;
 
if (!flag_zero_link)
{
super_class = objc_get_class_reference (CLASS_NAME (imp->imp_template));
 
if (!inst_meth)
 
/* If we are in a class method, we must retrieve the
_metaclass_ for the current class, pointed at by the
class's "isa" pointer. The following assumes that "isa" is
the first ivar in a class (which it must be). */
super_class =
build_indirect_ref (input_location,
build_c_cast (input_location,
build_pointer_type (objc_class_type),
super_class),
RO_UNARY_STAR);
return super_class;
}
/* ??? Do we need to add the class ref anway for zero-link? */
/* else do it the slow way. */
super_class = (inst_meth ? objc_get_class_decl : objc_get_meta_class_decl);
/* assemble_external (super_class); */
super_name = my_build_string_pointer (IDENTIFIER_LENGTH (super_name) + 1,
IDENTIFIER_POINTER (super_name));
/* super_class = objc_get{Meta}Class("CLASS_SUPER_NAME"); */
return build_function_call (input_location,
super_class,
build_tree_list (NULL_TREE, super_name));
}
 
static tree
next_runtime_abi_02_receiver_is_class_object (tree receiver)
{
if (TREE_CODE (receiver) == VAR_DECL
&& IS_CLASS (TREE_TYPE (receiver))
&& classrefs
&& VEC_length (ident_data_tuple, classrefs))
{
int count;
ident_data_tuple *ref;
/* The receiver is a variable created by build_class_reference_decl. */
FOR_EACH_VEC_ELT (ident_data_tuple, classrefs, count, ref)
if (ref->data == receiver)
return ref->ident;
}
return NULL_TREE;
}
 
/* Assign all arguments in VALUES which have side-effect to a temporary
and replaced that argument in VALUES list with the temporary. The
arguments will be passed to a function with FNTYPE. */
 
static tree
objc_copy_to_temp_side_effect_params (tree fntype, tree values)
{
tree valtail;
function_args_iterator iter;
 
/* Skip over receiver and the &_msf_ref types. */
function_args_iter_init (&iter, fntype);
function_args_iter_next (&iter);
function_args_iter_next (&iter);
 
for (valtail = values; valtail;
valtail = TREE_CHAIN (valtail), function_args_iter_next (&iter))
{
tree value = TREE_VALUE (valtail);
tree type = function_args_iter_cond (&iter);
if (type == NULL_TREE)
break;
if (!TREE_SIDE_EFFECTS (value))
continue;
/* To prevent re-evaluation. */
value = save_expr (value);
add_stmt (value);
TREE_VALUE (valtail) = value;
}
return values;
}
 
/* Build the new abi's messaging library call. It looks like:
(*_msg.messenger) (receiver, &_msg, ...) */
 
static tree
build_v2_build_objc_method_call (int super_flag, tree method_prototype,
tree lookup_object, tree selector,
tree method_params,
bool check_for_nil)
{
tree ret_val;
tree sender, rcv_p, t;
tree ret_type
= (method_prototype
? TREE_VALUE (TREE_TYPE (method_prototype))
: objc_object_type);
tree ftype = build_function_type_for_method (ret_type, method_prototype,
METHOD_REF, super_flag);
tree sender_cast;
 
if (method_prototype && METHOD_TYPE_ATTRIBUTES (method_prototype))
ftype = build_type_attribute_variant (
ftype, METHOD_TYPE_ATTRIBUTES (method_prototype));
 
sender_cast = build_pointer_type (ftype);
 
if (check_for_nil)
method_params = objc_copy_to_temp_side_effect_params (ftype,
method_params);
 
/* Get &message_ref_t.messenger. */
sender = build_c_cast (input_location,
build_pointer_type (super_flag
? objc_v2_super_imp_type
: objc_v2_imp_type),
selector);
 
sender = build_indirect_ref (input_location, sender, RO_UNARY_STAR);
 
rcv_p = (super_flag ? objc_super_type : objc_object_type);
 
lookup_object = build_c_cast (input_location, rcv_p, lookup_object);
 
/* Use SAVE_EXPR to avoid evaluating the receiver twice. */
lookup_object = save_expr (lookup_object);
 
method_params = tree_cons (NULL_TREE, lookup_object,
tree_cons (NULL_TREE, selector,
method_params));
t = build3 (OBJ_TYPE_REF, sender_cast, sender, lookup_object, size_zero_node);
ret_val = build_function_call (input_location, t, method_params);
if (check_for_nil)
{
/* receiver != nil ? ret_val : 0 */
tree ftree;
tree ifexp;
 
if (TREE_CODE (ret_type) == RECORD_TYPE
|| TREE_CODE (ret_type) == UNION_TYPE)
{
VEC(constructor_elt,gc) *rtt = NULL;
/* ??? CHECKME. hmmm..... think we need something more
here. */
CONSTRUCTOR_APPEND_ELT (rtt, NULL_TREE, NULL_TREE);
ftree = objc_build_constructor (ret_type, rtt);
}
else
ftree = fold_convert (ret_type, integer_zero_node);
 
ifexp = build_binary_op (input_location, NE_EXPR,
lookup_object,
fold_convert (rcv_p, integer_zero_node), 1);
 
#ifdef OBJCPLUS
ret_val = build_conditional_expr (ifexp, ret_val, ftree, tf_warning_or_error);
#else
/* ??? CHECKME. */
ret_val = build_conditional_expr (input_location,
ifexp, 1,
ret_val, NULL_TREE,
ftree, NULL_TREE);
#endif
}
return ret_val;
}
 
static tree
next_runtime_abi_02_build_objc_method_call (location_t loc,
tree method_prototype,
tree receiver,
tree rtype,
tree sel_name,
tree method_params,
int super)
{
tree ret_type, selector;
tree message_func_decl;
bool check_for_nil = flag_objc_nilcheck;
 
ret_type = method_prototype
? TREE_VALUE (TREE_TYPE (method_prototype))
: objc_object_type;
 
/* Do we need to check for nil receivers ? */
/* For now, message sent to classes need no nil check. In the
future, class declaration marked as weak_import must be nil
checked. */
if (super
|| (TREE_CODE (receiver) == VAR_DECL
&& TREE_TYPE (receiver) == objc_class_type))
check_for_nil = false;
 
if (!targetm.calls.struct_value_rtx (0, 0)
&& (TREE_CODE (ret_type) == RECORD_TYPE
|| TREE_CODE (ret_type) == UNION_TYPE)
&& targetm.calls.return_in_memory (ret_type, 0))
{
if (super)
message_func_decl = umsg_id_super2_stret_fixup_decl;
else
message_func_decl = objc_is_id (rtype)
? umsg_id_stret_fixup_decl
: umsg_stret_fixup_decl;
}
else
{
if (super)
message_func_decl = umsg_id_super2_fixup_decl;
else
message_func_decl = objc_is_id (rtype)
? umsg_id_fixup_decl
: umsg_fixup_decl;
}
 
selector = build_v2_selector_messenger_reference (sel_name,
message_func_decl);
 
/* selector = &_msg; */
selector = build_unary_op (loc, ADDR_EXPR, selector, 0);
 
selector = build_c_cast (loc, (super ? objc_v2_super_selector_type
: objc_v2_selector_type),
selector);
 
/* (*_msg.messenger) (receiver, &_msg, ...); */
return build_v2_build_objc_method_call (super, method_prototype,
receiver, selector,
method_params, check_for_nil);
}
 
/* NOTE --- Constant String Class Stuff --- */
 
static bool
next_runtime_abi_02_setup_const_string_class_decl (void)
{
if (!constant_string_global_id)
{
/* Hopefully, this should not represent a serious limitation. */
char buf[BUFSIZE];
snprintf (buf, BUFSIZE, "OBJC_CLASS_$_%s", constant_string_class_name);
constant_string_global_id = get_identifier (buf);
}
 
string_class_decl = lookup_name (constant_string_global_id);
 
/* In OBJC2 abi, constant string class reference refers to class
name for NSConstantString class. This declaration may not be
available yet (in fact it is not in most cases). So, declare an
extern OBJC_CLASS_$_NSConstantString in its place. */
if (!string_class_decl)
string_class_decl =
create_extern_decl (objc_v2_class_template,
IDENTIFIER_POINTER (constant_string_global_id));
 
return (string_class_decl != NULL_TREE);
}
 
static tree
next_runtime_abi_02_build_const_string_constructor (location_t loc, tree string,
int length)
{
tree constructor, fields, var;
VEC(constructor_elt,gc) *v = NULL;
 
/* NeXT: (NSConstantString *) & ((__builtin_ObjCString) { isa, string, length }) */
fields = TYPE_FIELDS (internal_const_str_type);
CONSTRUCTOR_APPEND_ELT (v, fields,
build_unary_op (loc, ADDR_EXPR, string_class_decl, 0));
 
fields = DECL_CHAIN (fields);
CONSTRUCTOR_APPEND_ELT (v, fields,
build_unary_op (loc, ADDR_EXPR, string, 1));
 
/* ??? check if this should be long. */
fields = DECL_CHAIN (fields);
CONSTRUCTOR_APPEND_ELT (v, fields, build_int_cst (NULL_TREE, length));
constructor = objc_build_constructor (internal_const_str_type, v);
 
var = build_decl (input_location, CONST_DECL, NULL, TREE_TYPE (constructor));
DECL_INITIAL (var) = constructor;
TREE_STATIC (var) = 1;
DECL_CONTEXT (var) = NULL;
OBJCMETA (var, objc_meta, meta_const_str);
return var;
}
 
/* NOTE --- NeXT V2 Metadata templates --- */
 
/* This routine builds the following type:
struct _prop_t
{
const char * const name; // property name
const char * const attributes; // comma-delimited, encoded,
// property attributes
};
*/
 
static tree
build_v2_property_template (void)
{
tree prop_record;
tree decls, *chain = NULL;
 
prop_record = objc_start_struct (get_identifier ("_prop_t"));
/* const char * name */
decls = add_field_decl (string_type_node, "name", &chain);
 
/* const char * attribute */
add_field_decl (string_type_node, "attribute", &chain);
 
objc_finish_struct (prop_record, decls);
return prop_record;
}
 
/* struct ivar_t
{
unsigned long int *offset;
char *name;
char *type;
uint32_t alignment;
uint32_t size;
};
*/
 
static tree
build_v2_ivar_t_template (void)
{
tree objc_ivar_id, objc_ivar_record;
tree decls, *chain = NULL;
 
objc_ivar_id = get_identifier ("_ivar_t");
objc_ivar_record = objc_start_struct (objc_ivar_id);
 
/* unsigned long int *offset; */
decls = add_field_decl (build_pointer_type
(TREE_TYPE (size_zero_node)), "offset", &chain);
 
/* char *name; */
add_field_decl (string_type_node, "name", &chain);
 
/* char *type; */
add_field_decl (string_type_node, "type", &chain);
 
/* uint32_t alignment; */
add_field_decl (integer_type_node, "alignment", &chain);
 
/* uint32_t size; */
add_field_decl (integer_type_node, "size", &chain);
 
objc_finish_struct (objc_ivar_record, decls);
return objc_ivar_record;
}
 
static void
build_metadata_templates (void)
{
 
if (!objc_method_template)
objc_method_template = build_method_template ();
 
if (!objc_v2_property_template)
objc_v2_property_template = build_v2_property_template ();
 
if (!objc_v2_ivar_template)
objc_v2_ivar_template = build_v2_ivar_t_template ();
 
}
 
/* NOTE --- Output NeXT V2 Metadata --- */
 
/* Routine builds name of Interface's main meta-data of type class_t. */
 
static char *
objc_build_internal_classname (tree ident, bool metaclass)
{
static char string[512];
snprintf (string, 512, "%s_%s", metaclass ? "OBJC_METACLASS_$"
: "OBJC_CLASS_$",
IDENTIFIER_POINTER (ident));
return string;
}
 
/* Build the name for object of type struct class_ro_t */
 
static const char *
newabi_append_ro (const char *name)
{
const char *dollar;
char *p;
static char string[BUFSIZE];
dollar = strchr (name, '$');
gcc_assert (dollar);
p = string;
*p = '_'; p++;
strncpy (p, name, (int)(dollar - name));
p += (int)(dollar - name);
sprintf (p, "RO_%s", dollar);
return string;
}
 
/* Build the struct message_ref_t msg =
{objc_msgSend_fixup_xxx, @selector(func)}
table. */
 
static
void build_v2_message_ref_translation_table (void)
{
int count;
msgref_entry *ref;
 
if (!msgrefs || !VEC_length (msgref_entry,msgrefs))
return;
 
FOR_EACH_VEC_ELT (msgref_entry, msgrefs, count, ref)
{
VEC(constructor_elt,gc) *initializer;
tree expr, constructor;
tree struct_type = TREE_TYPE (ref->refdecl);
location_t loc = DECL_SOURCE_LOCATION (ref->refdecl);
 
initializer = NULL;
/* First 'IMP messenger' field... */
expr = build_unary_op (loc, ADDR_EXPR, ref->func, 0);
expr = convert (objc_v2_imp_type, expr);
CONSTRUCTOR_APPEND_ELT (initializer, NULL_TREE, expr);
 
/* ... then 'SEL name' field. */
expr = build_selector (ref->selname);
CONSTRUCTOR_APPEND_ELT (initializer, NULL_TREE, expr);
constructor = objc_build_constructor (struct_type, initializer);
finish_var_decl (ref->refdecl, constructor);
}
}
 
/* Build decl = initializer; for each externally visible class
reference. */
 
static void
build_v2_classrefs_table (void)
{
int count;
ident_data_tuple *ref;
 
if (!classrefs || !VEC_length (ident_data_tuple, classrefs))
return;
 
FOR_EACH_VEC_ELT (ident_data_tuple, classrefs, count, ref)
{
tree expr = ref->ident;
tree decl = ref->data;
/* Interface with no implementation and yet one of its messages
has been used. Need to generate a full address-of tree for it
here. */
if (TREE_CODE (expr) == IDENTIFIER_NODE)
{
const char *name = objc_build_internal_classname (expr, false);
expr = create_extern_decl (objc_v2_class_template, name);
expr = convert (objc_class_type, build_fold_addr_expr (expr));
}
/* The runtime wants this, even if it appears unused, so we must force the
output.
DECL_PRESERVE_P (decl) = 1; */
finish_var_decl (decl, expr);
}
}
 
/* Build decl = initializer; for each externally visible super class
reference. */
 
static void
build_v2_super_classrefs_table (bool metaclass)
{
int count;
ident_data_tuple *ref;
VEC (ident_data_tuple, gc) *list = metaclass ? metaclass_super_refs
: class_super_refs;
 
if (!list || !VEC_length (ident_data_tuple, list))
return;
 
FOR_EACH_VEC_ELT (ident_data_tuple, list, count, ref)
{
tree expr = ref->ident;
tree decl = ref->data;
/* Interface with no implementation and yet one of its messages
has been used. Need to generate a full address-of tree for it
here. */
if (TREE_CODE (expr) == IDENTIFIER_NODE)
{
const char * name = objc_build_internal_classname (expr, metaclass);
expr = create_extern_decl (objc_v2_class_template, name);
expr = convert (objc_class_type, build_fold_addr_expr (expr));
}
finish_var_decl (decl, expr);
}
}
 
/* Add the global class meta-data declaration to the list which later
on ends up in the __class_list section. */
 
static GTY(()) VEC(tree,gc) *class_list;
 
static void
objc_v2_add_to_class_list (tree global_class_decl)
{
if (!class_list)
class_list = VEC_alloc (tree, gc, imp_count?imp_count:1);
VEC_safe_push (tree, gc, class_list, global_class_decl);
}
 
static GTY(()) VEC(tree,gc) *nonlazy_class_list;
 
/* Add the global class meta-data declaration to the list which later
on ends up in the __nonlazy_class section. */
 
static void
objc_v2_add_to_nonlazy_class_list (tree global_class_decl)
{
if (!nonlazy_class_list)
nonlazy_class_list = VEC_alloc (tree, gc, imp_count?imp_count:1);
VEC_safe_push (tree, gc, nonlazy_class_list, global_class_decl);
}
 
static GTY(()) VEC(tree,gc) *category_list;
 
/* Add the category meta-data declaration to the list which later on
ends up in the __nonlazy_category section. */
 
static void
objc_v2_add_to_category_list (tree decl)
{
if (!category_list)
category_list = VEC_alloc (tree, gc, cat_count?cat_count:1);
VEC_safe_push (tree, gc, category_list, decl);
}
 
static GTY(()) VEC(tree,gc) *nonlazy_category_list;
 
/* Add the category meta-data declaration to the list which later on
ends up in the __category_list section. */
 
static void
objc_v2_add_to_nonlazy_category_list (tree decl)
{
if (!nonlazy_category_list)
nonlazy_category_list = VEC_alloc (tree, gc, cat_count?cat_count:1);
VEC_safe_push (tree, gc, nonlazy_category_list, decl);
}
 
static bool
has_load_impl (tree clsmeth)
{
while (clsmeth)
{
tree id = METHOD_SEL_NAME (clsmeth);
if (IDENTIFIER_LENGTH (id) == 4
&& strncmp (IDENTIFIER_POINTER (id), "load", 4) == 0)
return true;
clsmeth = DECL_CHAIN (clsmeth);
}
 
return false;
}
 
/* Build a __{class,category}_list section table containing address of
all @implemented {class,category} meta-data. */
 
static void
build_v2_address_table (VEC(tree,gc) *src, const char *nam, tree attr)
{
int count=0;
tree type, decl, expr;
VEC(constructor_elt,gc) *initlist = NULL;
 
if (!src || !VEC_length(tree,src))
return;
 
FOR_EACH_VEC_ELT (tree, src, count, decl)
{
#ifndef OBJCPLUS
tree purpose = build_int_cst (NULL_TREE, count);
#else
tree purpose = NULL_TREE;
#endif
expr = convert (objc_class_type, build_fold_addr_expr (decl));
CONSTRUCTOR_APPEND_ELT (initlist, purpose, expr);
}
gcc_assert (count > 0);
type = build_array_type (objc_class_type,
build_index_type (build_int_cst (NULL_TREE, count - 1)));
decl = start_var_decl (type, nam);
/* The runtime wants this, even if it appears unused, so we must
force the output. */
DECL_PRESERVE_P (decl) = 1;
expr = objc_build_constructor (type, initlist);
OBJCMETA (decl, objc_meta, attr);
finish_var_decl (decl, expr);
}
 
/* Build decl = initializer; for each protocol referenced in
@protocol(MyProt) expression. Refs as built in the entry section
above. */
 
static void
build_v2_protocol_list_translation_table (void)
{
int count;
prot_list_entry *ref;
 
if (!protrefs)
return;
 
FOR_EACH_VEC_ELT (prot_list_entry, protrefs, count, ref)
{
char buf[BUFSIZE];
tree expr;
gcc_assert (TREE_CODE (ref->id) == PROTOCOL_INTERFACE_TYPE);
snprintf (buf, BUFSIZE, "_OBJC_Protocol_%s",
IDENTIFIER_POINTER (PROTOCOL_NAME (ref->id)));
expr = start_var_decl (objc_v2_protocol_template, buf);
expr = convert (objc_protocol_type, build_fold_addr_expr (expr));
finish_var_decl (ref->refdecl, expr);
}
/* TODO: Maybe we could explicitly delete the vec. now? */
}
 
static GTY (()) VEC (prot_list_entry, gc) * protlist;
 
/* Add the local protocol meta-data declaration to the list which
later on ends up in the __protocol_list section. */
 
static void
objc_add_to_protocol_list (tree protocol_interface_decl, tree protocol_decl)
{
prot_list_entry e;
if (!protlist)
/* Arbitrary init count. */
protlist = VEC_alloc (prot_list_entry, gc, 32);
e.id = protocol_interface_decl;
e.refdecl = protocol_decl;
VEC_safe_push (prot_list_entry, gc, protlist, &e);
}
 
/* Build the __protocol_list section table containing address of all
generate protocol_t meta-data. */
 
static void
build_v2_protocol_list_address_table (void)
{
int count;
prot_list_entry *ref;
if (!protlist || !VEC_length (prot_list_entry, protlist))
return;
 
FOR_EACH_VEC_ELT (prot_list_entry, protlist, count, ref)
{
tree decl, expr;
char buf[BUFSIZE];
gcc_assert (ref->id && TREE_CODE (ref->id) == PROTOCOL_INTERFACE_TYPE);
snprintf (buf, BUFSIZE, "_OBJC_LabelProtocol_%s",
IDENTIFIER_POINTER (PROTOCOL_NAME (ref->id)));
decl = create_global_decl (objc_protocol_type, buf);
expr = convert (objc_protocol_type, build_fold_addr_expr (ref->refdecl));
OBJCMETA (decl, objc_meta, meta_label_protocollist);
finish_var_decl (decl, expr);
}
 
/* TODO: delete the vec. */
/* TODO: upgrade to the clang/llvm hidden version. */
}
 
/* This routine declares a variable to hold meta data for 'struct
protocol_list_t'. */
 
static tree
generate_v2_protocol_list (tree i_or_p, tree klass_ctxt)
{
tree refs_decl, lproto, e, plist, ptempl_p_t;
int size = 0;
VEC(constructor_elt,gc) *initlist = NULL;
char buf[BUFSIZE];
 
if (TREE_CODE (i_or_p) == CLASS_INTERFACE_TYPE
|| TREE_CODE (i_or_p) == CATEGORY_INTERFACE_TYPE)
plist = CLASS_PROTOCOL_LIST (i_or_p);
else if (TREE_CODE (i_or_p) == PROTOCOL_INTERFACE_TYPE)
plist = PROTOCOL_LIST (i_or_p);
else
gcc_unreachable ();
 
/* Compute size. */
for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto))
if (TREE_CODE (TREE_VALUE (lproto)) == PROTOCOL_INTERFACE_TYPE
&& PROTOCOL_FORWARD_DECL (TREE_VALUE (lproto)))
size++;
 
/* Build initializer. */
 
ptempl_p_t = build_pointer_type (objc_v2_protocol_template);
e = build_int_cst (ptempl_p_t, size);
CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, e);
 
for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto))
{
tree pval = TREE_VALUE (lproto);
 
if (TREE_CODE (pval) == PROTOCOL_INTERFACE_TYPE
&& PROTOCOL_FORWARD_DECL (pval))
{
tree fwref = PROTOCOL_FORWARD_DECL (pval);
location_t loc = DECL_SOURCE_LOCATION (fwref) ;
e = build_unary_op (loc, ADDR_EXPR, fwref, 0);
CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, e);
}
}
 
/* static struct protocol_list_t *list[size]; */
 
switch (TREE_CODE (i_or_p))
{
case PROTOCOL_INTERFACE_TYPE:
snprintf (buf, BUFSIZE, "_OBJC_ProtocolRefs_%s",
IDENTIFIER_POINTER (PROTOCOL_NAME (i_or_p)));
break;
case CLASS_INTERFACE_TYPE:
snprintf (buf, BUFSIZE, "_OBJC_ClassProtocols_%s",
IDENTIFIER_POINTER (CLASS_NAME (i_or_p)));
break;
case CATEGORY_INTERFACE_TYPE:
snprintf (buf, BUFSIZE, "_OBJC_CategoryProtocols_%s_%s",
IDENTIFIER_POINTER (CLASS_NAME (klass_ctxt)),
IDENTIFIER_POINTER (CLASS_SUPER_NAME (klass_ctxt)));
break;
default:
gcc_unreachable ();
}
 
refs_decl = start_var_decl (build_sized_array_type (ptempl_p_t, size+1),
buf);
/* ObjC2 puts all these in the base section. */
OBJCMETA (refs_decl, objc_meta, meta_base);
DECL_PRESERVE_P (refs_decl) = 1;
finish_var_decl (refs_decl,
objc_build_constructor (TREE_TYPE (refs_decl),initlist));
return refs_decl;
}
 
/* This routine builds one 'struct method_t' initializer list. Note
that the old ABI is supposed to build 'struct objc_method' which
has 3 fields, but it does not build the initialization expression
for 'method_imp' which for protocols is NULL any way. To be
consistant with declaration of 'struct method_t', in the new ABI we
set the method_t.imp to NULL. */
 
static tree
build_v2_descriptor_table_initializer (tree type, tree entries)
{
VEC(constructor_elt,gc) *initlist = NULL;
do
{
VEC(constructor_elt,gc) *eltlist = NULL;
CONSTRUCTOR_APPEND_ELT (eltlist, NULL_TREE,
build_selector (METHOD_SEL_NAME (entries)));
CONSTRUCTOR_APPEND_ELT (eltlist, NULL_TREE,
add_objc_string (METHOD_ENCODING (entries),
meth_var_types));
CONSTRUCTOR_APPEND_ELT (eltlist, NULL_TREE, null_pointer_node);
 
CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE,
objc_build_constructor (type, eltlist));
entries = TREE_CHAIN (entries);
}
while (entries);
 
return objc_build_constructor (build_array_type (type, 0), initlist);
}
 
/* struct method_list_t
{
uint32_t entsize;
uint32_t method_count;
struct objc_method method_list[method_count];
}; */
 
static tree
build_v2_method_list_template (tree list_type, int size)
{
tree method_list_t_record;
tree array_type, decls, *chain = NULL;
 
method_list_t_record = objc_start_struct (NULL_TREE);
 
/* uint32_t const entsize; */
decls = add_field_decl (integer_type_node, "entsize", &chain);
 
/* int method_count; */
add_field_decl (integer_type_node, "method_count", &chain);
 
/* struct objc_method method_list[]; */
array_type = build_sized_array_type (list_type, size);
add_field_decl (array_type, "method_list", &chain);
 
objc_finish_struct (method_list_t_record, decls);
return method_list_t_record;
}
 
/* Note, as above that we are building to the objc_method_template
which has the *imp field. ABI0/1 build with
objc_method_prototype_template which is missing this field. */
static tree
generate_v2_meth_descriptor_table (tree chain, tree protocol,
const char *prefix, tree attr)
{
tree method_list_template, initlist, decl, methods;
int size, entsize;
VEC(constructor_elt,gc) *v = NULL;
char buf[BUFSIZE];
 
if (!chain || !prefix)
return NULL_TREE;
 
methods = chain;
size = 0;
while (methods)
{
if (! METHOD_ENCODING (methods))
METHOD_ENCODING (methods) = encode_method_prototype (methods);
methods = TREE_CHAIN (methods);
size++;
}
 
gcc_assert (size);
method_list_template = build_v2_method_list_template (objc_method_template,
size);
snprintf (buf, BUFSIZE, "%s_%s", prefix,
IDENTIFIER_POINTER (PROTOCOL_NAME (protocol)));
 
decl = start_var_decl (method_list_template, buf);
 
entsize = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_method_template));
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, build_int_cst (NULL_TREE, entsize));
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, build_int_cst (NULL_TREE, size));
initlist =
build_v2_descriptor_table_initializer (objc_method_template,
chain);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, initlist);
/* Get into the right section. */
OBJCMETA (decl, objc_meta, attr);
finish_var_decl (decl, objc_build_constructor (method_list_template, v));
return decl;
}
 
/* This routine builds the initializer list to initialize the 'struct
_prop_t prop_list[]' field of 'struct _prop_list_t' meta-data. */
 
static tree
build_v2_property_table_initializer (tree type, tree context)
{
tree x;
VEC(constructor_elt,gc) *inits = NULL;
if (TREE_CODE (context) == PROTOCOL_INTERFACE_TYPE)
x = CLASS_PROPERTY_DECL (context);
else
x = IMPL_PROPERTY_DECL (context);
 
for (; x; x = TREE_CHAIN (x))
{
VEC(constructor_elt,gc) *elemlist = NULL;
/* NOTE! sections where property name/attribute go MUST change
later. */
tree attribute, name_ident = PROPERTY_NAME (x);
 
CONSTRUCTOR_APPEND_ELT (elemlist, NULL_TREE,
add_objc_string (name_ident, prop_names_attr));
 
attribute = objc_v2_encode_prop_attr (x);
CONSTRUCTOR_APPEND_ELT (elemlist, NULL_TREE,
add_objc_string (attribute, prop_names_attr));
 
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE,
objc_build_constructor (type, elemlist));
}
 
return objc_build_constructor (build_array_type (type, 0),inits);
}
 
/* This routine builds the following type:
struct _prop_list_t
{
uint32_t entsize; // sizeof (struct _prop_t)
uint32_t prop_count;
struct _prop_t prop_list [prop_count];
}
*/
 
static tree
build_v2_property_list_template (tree list_type, int size)
{
tree property_list_t_record;
tree array_type, decls, *chain = NULL;
 
/* anonymous. */
property_list_t_record = objc_start_struct (NULL_TREE);
 
/* uint32_t const entsize; */
decls = add_field_decl (integer_type_node, "entsize", &chain);
 
/* int prop_count; */
add_field_decl (integer_type_node, "prop_count", &chain);
 
/* struct _prop_t prop_list[]; */
array_type = build_sized_array_type (list_type, size);
add_field_decl (array_type, "prop_list", &chain);
 
objc_finish_struct (property_list_t_record, decls);
return property_list_t_record;
}
 
/* Top-level routine to generate property tables for each
implementation. */
 
static tree
generate_v2_property_table (tree context, tree klass_ctxt)
{
tree x, decl, initlist, property_list_template;
bool is_proto = false;
VEC(constructor_elt,gc) *inits = NULL;
int init_val, size = 0;
char buf[BUFSIZE];
 
if (context)
{
gcc_assert (TREE_CODE (context) == PROTOCOL_INTERFACE_TYPE);
x = CLASS_PROPERTY_DECL (context);
is_proto = true;
}
else
x = IMPL_PROPERTY_DECL (klass_ctxt);
 
for (; x; x = TREE_CHAIN (x))
size++;
 
if (size == 0)
return NULL_TREE;
 
property_list_template =
build_v2_property_list_template (objc_v2_property_template,
size);
 
initlist = build_v2_property_table_initializer (objc_v2_property_template,
is_proto ? context
: klass_ctxt);
 
init_val = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_v2_property_template));
if (is_proto)
snprintf (buf, BUFSIZE, "_OBJC_ProtocolPropList_%s",
IDENTIFIER_POINTER (PROTOCOL_NAME (context)));
else
snprintf (buf, BUFSIZE, "_OBJC_ClassPropList_%s",
IDENTIFIER_POINTER (CLASS_NAME (klass_ctxt)));
 
decl = start_var_decl (property_list_template, buf);
 
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE,
build_int_cst (NULL_TREE, init_val));
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE,
build_int_cst (NULL_TREE, size));
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, initlist);
 
OBJCMETA (decl, objc_meta, meta_base);
finish_var_decl (decl, objc_build_constructor (TREE_TYPE (decl), inits));
return decl;
}
 
static tree
build_v2_protocol_initializer (tree type, tree protocol_name, tree protocol_list,
tree inst_methods, tree class_methods,
tree opt_ins_meth, tree opt_cls_meth,
tree property_list)
{
tree expr, ttyp;
location_t loc;
VEC(constructor_elt,gc) *inits = NULL;
 
/* TODO: find a better representation of location from the inputs. */
loc = UNKNOWN_LOCATION;
 
/* This is NULL for the new ABI. */
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE,
convert (objc_object_type, null_pointer_node));
 
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, protocol_name);
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, protocol_list);
 
ttyp = objc_method_proto_list_ptr;
if (inst_methods)
expr = convert (ttyp, build_unary_op (loc, ADDR_EXPR, inst_methods, 0));
else
expr = convert (ttyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr);
 
if (class_methods)
expr = convert (ttyp, build_unary_op (loc, ADDR_EXPR, class_methods, 0));
else
expr = convert (ttyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr);
 
if (opt_ins_meth)
expr = convert (ttyp, build_unary_op (loc, ADDR_EXPR, opt_ins_meth, 0));
else
expr = convert (ttyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr);
 
if (opt_cls_meth)
expr = convert (ttyp, build_unary_op (loc, ADDR_EXPR, opt_cls_meth, 0));
else
expr = convert (ttyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr);
 
ttyp = objc_prop_list_ptr;
if (property_list)
expr = convert (ttyp, build_unary_op (loc, ADDR_EXPR, property_list, 0));
else
expr = convert (ttyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr);
 
/* const uint32_t size; = sizeof(struct protocol_t) */
expr = build_int_cst (integer_type_node,
TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_v2_protocol_template)));
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr);
/* const uint32_t flags; = 0 */
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, integer_zero_node);
 
return objc_build_constructor (type, inits);
}
 
/* Main routine to build all meta data for all protocols used in a
translation unit. */
 
static void
generate_v2_protocols (void)
{
tree p ;
bool some = false;
 
if (!protocol_chain)
return ;
 
/* If a protocol was directly referenced, pull in indirect
references. */
for (p = protocol_chain; p; p = TREE_CHAIN (p))
if (PROTOCOL_FORWARD_DECL (p) && PROTOCOL_LIST (p))
generate_protocol_references (PROTOCOL_LIST (p));
 
for (p = protocol_chain; p; p = TREE_CHAIN (p))
{
location_t loc;
tree inst_meth, class_meth, opt_inst_meth, opt_class_meth, props;
tree decl, initlist, protocol_name_expr, refs_decl, refs_expr;
 
/* If protocol wasn't referenced, don't generate any code. */
decl = PROTOCOL_FORWARD_DECL (p);
 
if (!decl)
continue;
 
loc = DECL_SOURCE_LOCATION (decl);
some = true;
 
inst_meth =
generate_v2_meth_descriptor_table (PROTOCOL_NST_METHODS (p), p,
"_OBJC_ProtocolInstanceMethods",
meta_proto_nst_meth);
 
class_meth =
generate_v2_meth_descriptor_table (PROTOCOL_CLS_METHODS (p), p,
"_OBJC_ProtocolClassMethods",
meta_proto_cls_meth);
 
opt_inst_meth =
generate_v2_meth_descriptor_table (PROTOCOL_OPTIONAL_NST_METHODS (p), p,
"_OBJC_OptProtocolInstMethods",
meta_proto_nst_meth);
 
opt_class_meth =
generate_v2_meth_descriptor_table (PROTOCOL_OPTIONAL_CLS_METHODS (p), p,
"_OBJC_OptProtocolClassMethods",
meta_proto_cls_meth);
 
if (PROTOCOL_LIST (p))
refs_decl = generate_v2_protocol_list (p, NULL_TREE);
else
refs_decl = 0;
 
/* static struct objc_protocol _OBJC_Protocol_<mumble>; */
protocol_name_expr = add_objc_string (PROTOCOL_NAME (p), class_names);
 
if (refs_decl)
refs_expr = convert (build_pointer_type (objc_v2_protocol_template),
build_unary_op (loc, ADDR_EXPR, refs_decl, 0));
else
refs_expr = build_int_cst (NULL_TREE, 0);
 
props = generate_v2_property_table (p, NULL_TREE);
 
initlist = build_v2_protocol_initializer (TREE_TYPE (decl),
protocol_name_expr, refs_expr,
inst_meth, class_meth,
opt_inst_meth, opt_class_meth,
props);
finish_var_decl (decl, initlist);
objc_add_to_protocol_list (p, decl);
}
 
if (some)
{
/* Make sure we get the Protocol class linked in - reference
it... */
p = objc_v2_get_class_reference (get_identifier (PROTOCOL_OBJECT_CLASS_NAME));
/* ... but since we don't specifically use the reference... we
need to force it. */
DECL_PRESERVE_P (p) = 1;
}
}
 
static tree
generate_v2_dispatch_table (tree chain, const char *name, tree attr)
{
tree decl, method_list_template, initlist;
VEC(constructor_elt,gc) *v = NULL;
int size, init_val;
 
if (!chain || !name || !(size = list_length (chain)))
return NULL_TREE;
 
method_list_template
= build_v2_method_list_template (objc_method_template, size);
initlist
= build_dispatch_table_initializer (objc_method_template, chain);
 
decl = start_var_decl (method_list_template, name);
 
init_val = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_method_template));
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
build_int_cst (integer_type_node, init_val));
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
build_int_cst (integer_type_node, size));
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, initlist);
 
OBJCMETA (decl, objc_meta, attr);
finish_var_decl (decl,
objc_build_constructor (TREE_TYPE (decl), v));
return decl;
}
 
/* Init a category. */
static tree
build_v2_category_initializer (tree type, tree cat_name, tree class_name,
tree inst_methods, tree class_methods,
tree protocol_list, tree property_list,
location_t loc)
{
tree expr, ltyp;
VEC(constructor_elt,gc) *v = NULL;
 
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, cat_name);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, class_name);
 
ltyp = objc_method_list_ptr;
if (inst_methods)
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, inst_methods, 0));
else
expr = convert (ltyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
 
if (class_methods)
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, class_methods, 0));
else
expr = convert (ltyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
 
/* protocol_list = */
ltyp = build_pointer_type (objc_v2_protocol_template);
if (protocol_list)
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, protocol_list, 0));
else
expr = convert (ltyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
 
ltyp = objc_prop_list_ptr;
if (property_list)
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, property_list, 0));
else
expr = convert (ltyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
 
return objc_build_constructor (type, v);
}
 
/* static struct category_t _OBJC_CATEGORY_$_<name> = { ... }; */
 
static void
generate_v2_category (struct imp_entry *impent)
{
tree initlist, cat_name_expr, class_name_expr;
tree protocol_decl, category, props, t;
tree inst_methods = NULL_TREE, class_methods = NULL_TREE;
tree cat = impent->imp_context;
tree cat_decl = impent->class_decl;
location_t loc;
char buf[BUFSIZE];
 
loc = DECL_SOURCE_LOCATION (cat_decl);
 
/* ??? not sure this is really necessary, the following references should
force appropriate linkage linkage...
-- but ... ensure a reference to the class... */
t = objc_v2_get_class_reference (CLASS_NAME (cat));
/* ... which we ignore so force it out.. */
DECL_PRESERVE_P (t) = 1;
 
snprintf (buf, BUFSIZE, "OBJC_CLASS_$_%s", IDENTIFIER_POINTER (CLASS_NAME (cat)));
class_name_expr = create_extern_decl (objc_v2_class_template, buf);
class_name_expr = build_fold_addr_expr (class_name_expr);
 
cat_name_expr = add_objc_string (CLASS_SUPER_NAME (cat), class_names);
category = lookup_category (impent->imp_template, CLASS_SUPER_NAME (cat));
 
if (category && CLASS_PROTOCOL_LIST (category))
{
generate_protocol_references (CLASS_PROTOCOL_LIST (category));
protocol_decl = generate_v2_protocol_list (category, cat);
}
else
protocol_decl = NULL_TREE;
 
/* decl = update_var_decl(impent->class_decl); */
 
props = generate_v2_property_table (NULL_TREE, cat);
 
if (CLASS_NST_METHODS (cat))
{
snprintf (buf, BUFSIZE, "_OBJC_CategoryInstanceMethods_%s_%s",
IDENTIFIER_POINTER (CLASS_NAME (cat)),
IDENTIFIER_POINTER (CLASS_SUPER_NAME (cat)));
inst_methods = generate_v2_dispatch_table (CLASS_NST_METHODS (cat), buf,
meta_cati_meth);
}
 
if (CLASS_CLS_METHODS (cat))
{
snprintf (buf, BUFSIZE, "_OBJC_CategoryClassMethods_%s_%s",
IDENTIFIER_POINTER (CLASS_NAME (cat)),
IDENTIFIER_POINTER (CLASS_SUPER_NAME (cat)));
class_methods = generate_v2_dispatch_table (CLASS_CLS_METHODS (cat), buf,
meta_catc_meth);
}
 
initlist = build_v2_category_initializer (TREE_TYPE (cat_decl),
cat_name_expr, class_name_expr,
inst_methods, class_methods,
protocol_decl, props, loc);
 
finish_var_decl (cat_decl, initlist);
impent->class_decl = cat_decl;
 
/* Add to list of pointers in __category_list section. */
objc_v2_add_to_category_list (cat_decl);
if (has_load_impl (CLASS_CLS_METHODS (impent->imp_context)))
objc_v2_add_to_nonlazy_category_list (cat_decl);
}
 
/* This routine declares a variable to hold the offset for ivar
FIELD_DECL. Variable name is .objc_ivar.ClassName.IvarName. */
 
typedef struct GTY(()) ivarref_entry
{
tree decl;
tree offset;
} ivarref_entry;
DEF_VEC_O(ivarref_entry);
DEF_VEC_ALLOC_O(ivarref_entry, gc);
 
static GTY (()) VEC (ivarref_entry, gc) * ivar_offset_refs;
 
static tree
ivar_offset_ref (tree class_name, tree field_decl)
{
tree decl, field_decl_id;
ivarref_entry e;
bool global_var;
char buf[512];
 
create_ivar_offset_name (buf, class_name, field_decl);
field_decl_id = get_identifier (buf);
 
if (ivar_offset_refs)
{
int count;
ivarref_entry *ref;
FOR_EACH_VEC_ELT (ivarref_entry, ivar_offset_refs, count, ref)
if (DECL_NAME (ref->decl) == field_decl_id)
return ref->decl;
}
else
/* Somewhat arbitrary initial provision. */
ivar_offset_refs = VEC_alloc (ivarref_entry, gc, 32);
 
/* We come here if we don't find a match or at the start. */
global_var = (TREE_PUBLIC (field_decl) || TREE_PROTECTED (field_decl));
if (global_var)
decl = create_global_decl (TREE_TYPE (size_zero_node), buf);
else
decl = create_hidden_decl (TREE_TYPE (size_zero_node), buf);
 
/* Make sure it ends up in an ObjC section. */
OBJCMETA (decl, objc_meta, meta_base);
 
e.decl = decl;
e.offset = byte_position (field_decl);
VEC_safe_push (ivarref_entry, gc, ivar_offset_refs, &e);
return decl;
}
 
/* This routine builds initializer-list needed to initialize 'struct
ivar_t list[count] of 'struct ivar_list_t' meta data. TYPE is
'struct ivar_t' and FIELD_DECL is list of ivars for the target
class. */
 
static tree
build_v2_ivar_list_initializer (tree class_name, tree type, tree field_decl)
{
VEC(constructor_elt,gc) *inits = NULL;
 
do
{
VEC(constructor_elt,gc) *ivar = NULL;
int val;
tree id;
 
/* Unnamed bitfields are ignored. */
if (!DECL_NAME (field_decl))
{
field_decl = DECL_CHAIN (field_decl);
continue;
}
 
/* Set offset. */
CONSTRUCTOR_APPEND_ELT (ivar, NULL_TREE,
build_unary_op (input_location,
ADDR_EXPR,
ivar_offset_ref (class_name,
field_decl), 0));
 
/* Set name. */
CONSTRUCTOR_APPEND_ELT (ivar, NULL_TREE,
add_objc_string (DECL_NAME (field_decl),
meth_var_names));
 
/* Set type. */
id = add_objc_string (encode_field_decl (field_decl),
meth_var_types);
CONSTRUCTOR_APPEND_ELT (ivar, NULL_TREE, id);
 
/* Set alignment. */
val = DECL_ALIGN_UNIT (field_decl);
val = exact_log2 (val);
CONSTRUCTOR_APPEND_ELT (ivar, NULL_TREE,
build_int_cst (integer_type_node, val));
 
/* Set size. */
val = TREE_INT_CST_LOW (DECL_SIZE_UNIT (field_decl));
CONSTRUCTOR_APPEND_ELT (ivar, NULL_TREE,
build_int_cst (integer_type_node, val));
 
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE,
objc_build_constructor (type, ivar));
 
do
field_decl = DECL_CHAIN (field_decl);
while (field_decl && TREE_CODE (field_decl) != FIELD_DECL);
}
while (field_decl);
 
return objc_build_constructor (build_array_type (type, 0), inits);
}
 
/*
struct ivar_list_t
{
uint32 entsize;
uint32 count;
struct iver_t list[count];
};
*/
 
static tree
build_v2_ivar_list_t_template (tree list_type, int size)
{
tree objc_ivar_list_record;
tree decls, *chain = NULL;
 
/* Anonymous. */
objc_ivar_list_record = objc_start_struct (NULL_TREE);
 
/* uint32 entsize; */
decls = add_field_decl (integer_type_node, "entsize", &chain);
 
/* uint32 count; */
add_field_decl (integer_type_node, "count", &chain);
 
/* struct objc_ivar ivar_list[]; */
add_field_decl (build_sized_array_type (list_type, size),
"list", &chain);
 
objc_finish_struct (objc_ivar_list_record, decls);
return objc_ivar_list_record;
}
 
/* This routine declares a static variable of type 'struct
ivar_list_t' and initializes it. chain is the source of the data,
name is the name for the var. attr is the meta-data section tag
attribute. templ is the implementation template for the class. */
 
static tree
generate_v2_ivars_list (tree chain, const char *name, tree attr, tree templ)
{
tree decl, initlist, ivar_list_template;
VEC(constructor_elt,gc) *inits = NULL;
int size, ivar_t_size;
 
if (!chain || !name || !(size = ivar_list_length (chain)))
return NULL_TREE;
 
generating_instance_variables = 1;
ivar_list_template = build_v2_ivar_list_t_template (objc_v2_ivar_template,
size);
 
initlist = build_v2_ivar_list_initializer (CLASS_NAME (templ),
objc_v2_ivar_template, chain);
ivar_t_size = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_v2_ivar_template));
 
decl = start_var_decl (ivar_list_template, name);
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE,
build_int_cst (integer_type_node, ivar_t_size));
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE,
build_int_cst (integer_type_node, size));
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, initlist);
OBJCMETA (decl, objc_meta, attr);
finish_var_decl (decl, objc_build_constructor (TREE_TYPE (decl), inits));
generating_instance_variables = 0;
return decl;
}
 
/* Routine to build initializer list to initialize objects of type
struct class_t; */
 
static tree
build_v2_class_t_initializer (tree type, tree isa, tree superclass,
tree ro, tree cache, tree vtable)
{
VEC(constructor_elt,gc) *initlist = NULL;
 
/* isa */
CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, isa);
 
/* superclass */
CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, superclass);
 
/* cache */
if (cache)
CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, cache);
else
CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, null_pointer_node);
 
/* vtable */
if (vtable)
CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, vtable);
else
CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, null_pointer_node);
 
/* ro */
CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, ro);
 
return objc_build_constructor (type, initlist);
}
 
/* Routine to build object of struct class_ro_t { ... }; */
 
static tree
build_v2_class_ro_t_initializer (tree type, tree name,
unsigned int flags, unsigned int instanceStart,
unsigned int instanceSize,
tree ivarLayout,
tree baseMethods, tree baseProtocols,
tree ivars, tree property_list)
{
tree expr, unsigned_char_star, ltyp;
location_t loc;
VEC(constructor_elt,gc) *initlist = NULL;
 
/* TODO: fish out the real location from somewhere. */
loc = UNKNOWN_LOCATION;
 
/* flags */
CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE,
build_int_cst (integer_type_node, flags));
 
/* instanceStart */
CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE,
build_int_cst (integer_type_node, instanceStart));
 
/* instanceSize */
CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE,
build_int_cst (integer_type_node, instanceSize));
 
/* This ABI is currently only used on m64 NeXT. We always
explicitly declare the alignment padding. */
/* reserved, pads alignment. */
CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE,
build_int_cst (integer_type_node, 0));
 
/* ivarLayout */
unsigned_char_star = build_pointer_type (unsigned_char_type_node);
if (ivarLayout)
expr = ivarLayout;
else
expr = convert (unsigned_char_star, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, expr);
 
/* name */
CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, default_conversion (name));
 
/* baseMethods */
ltyp = objc_method_list_ptr;
if (baseMethods)
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, baseMethods, 0));
else
expr = convert (ltyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, expr);
 
/* baseProtocols */
ltyp = build_pointer_type (xref_tag (RECORD_TYPE,
get_identifier (UTAG_V2_PROTOCOL_LIST)));
if (baseProtocols)
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, baseProtocols, 0));
else
expr = convert (ltyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, expr);
 
/* ivars */
ltyp = objc_v2_ivar_list_ptr;
if (ivars)
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, ivars, 0));
else
expr = convert (ltyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, expr);
 
/* TODO: We don't yet have the weak/strong stuff... */
/* weakIvarLayout */
CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE,
convert (unsigned_char_star, null_pointer_node));
 
/* property list */
ltyp = objc_prop_list_ptr;
if (property_list)
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, property_list, 0));
else
expr = convert (ltyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, expr);
return objc_build_constructor (type, initlist);
}
 
static GTY (()) VEC (ident_data_tuple, gc) * ehtype_list;
 
/* Record a name as needing a catcher. */
static void
objc_v2_add_to_ehtype_list (tree name)
{
ident_data_tuple e;
if (ehtype_list)
{
int count = 0;
ident_data_tuple *ref;
 
FOR_EACH_VEC_ELT (ident_data_tuple, ehtype_list, count, ref)
if (ref->ident == name)
return; /* Already entered. */
}
else
/* Arbitrary initial count. */
ehtype_list = VEC_alloc (ident_data_tuple, gc, 8);
 
/* Not found, or new list. */
e.ident = name;
e.data = NULL_TREE;
VEC_safe_push (ident_data_tuple, gc, ehtype_list, &e);
}
 
static void
generate_v2_class_structs (struct imp_entry *impent)
{
tree decl, name_expr, initlist, protocol_decl, metaclass_decl, class_decl;
tree field, firstIvar, chain;
tree class_superclass_expr, metaclass_superclass_expr, props;
/* TODO: figure out how to compute this. */
tree ivarLayout = NULL_TREE;
tree my_super_id = NULL_TREE, root_expr = NULL_TREE;
tree inst_methods = NULL_TREE, class_methods = NULL_TREE;
tree inst_ivars = NULL_TREE, class_ivars = NULL_TREE;
location_t loc;
char buf[BUFSIZE];
unsigned int instanceStart, instanceSize;
unsigned int flags = 0x01; /* RO_META */
int cls_flags = impent->has_cxx_cdtors ? OBJC2_CLS_HAS_CXX_STRUCTORS
: 0 ;
 
class_decl = impent->class_decl;
metaclass_decl = impent->meta_decl;
loc = DECL_SOURCE_LOCATION (class_decl);
 
DECL_EXTERNAL (class_decl) = DECL_EXTERNAL (metaclass_decl) = 0;
TREE_PUBLIC (class_decl) = TREE_PUBLIC (metaclass_decl) = 1;
#ifdef OBJCPLUS
gcc_assert (!CP_DECL_CONTEXT (class_decl) || CP_DECL_CONTEXT (class_decl) == global_namespace);
gcc_assert (!CP_DECL_CONTEXT (metaclass_decl) || CP_DECL_CONTEXT (metaclass_decl) == global_namespace);
#endif
 
/* Generation of data for meta class. */
my_super_id = CLASS_SUPER_NAME (impent->imp_template);
if (my_super_id)
{
/* Compute reference to root's name. For a meta class, "isa" is
a reference to the root class name. */
tree my_root_id = my_super_id;
tree my_root_int, interface;
do
{
my_root_int = lookup_interface (my_root_id);
 
if (my_root_int && CLASS_SUPER_NAME (my_root_int))
my_root_id = CLASS_SUPER_NAME (my_root_int);
else
break;
}
while (1);
 
/* {extern} struct class_t OBJC_METACLASS_$_<my_root_int>
create extern if not already declared. */
snprintf (buf, BUFSIZE, "OBJC_METACLASS_$_%s",
IDENTIFIER_POINTER (CLASS_NAME (my_root_int)));
root_expr = create_extern_decl (objc_v2_class_template, buf);
root_expr = build_fold_addr_expr (root_expr);
 
/* Install class `isa' and `super' pointers at runtime. */
interface = lookup_interface (my_super_id);
gcc_assert (interface);
/* Similarly, for OBJC_CLASS_$_<interface>... */
snprintf (buf, BUFSIZE, "OBJC_CLASS_$_%s",
IDENTIFIER_POINTER (CLASS_NAME (interface)));
class_superclass_expr = create_extern_decl (objc_v2_class_template, buf);
class_superclass_expr = build_fold_addr_expr (class_superclass_expr);
/* ... and for OBJC_METACLASS_$_<interface>. */
snprintf (buf, BUFSIZE, "OBJC_METACLASS_$_%s",
IDENTIFIER_POINTER (CLASS_NAME (interface)));
metaclass_superclass_expr = create_extern_decl (objc_v2_class_template, buf);
metaclass_superclass_expr = build_fold_addr_expr (metaclass_superclass_expr);
}
else
{
/* Root class. */
root_expr = build_unary_op (loc, ADDR_EXPR, metaclass_decl, 0);
metaclass_superclass_expr = build_unary_op (loc, ADDR_EXPR, class_decl, 0);
class_superclass_expr = build_int_cst (NULL_TREE, 0);
flags |= 0x02; /* RO_ROOT: it is also a root meta class. */
}
 
if (CLASS_PROTOCOL_LIST (impent->imp_template))
{
generate_protocol_references (CLASS_PROTOCOL_LIST (impent->imp_template));
protocol_decl = generate_v2_protocol_list (impent->imp_template,
impent->imp_context);
}
else
protocol_decl = 0;
 
name_expr = add_objc_string (CLASS_NAME (impent->imp_template),
class_names);
 
if (CLASS_CLS_METHODS (impent->imp_context))
{
snprintf (buf, BUFSIZE, "_OBJC_ClassMethods_%s",
IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)));
class_methods =
generate_v2_dispatch_table (CLASS_CLS_METHODS (impent->imp_context),
buf, meta_clac_meth);
}
 
instanceStart = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_v2_class_template));
 
/* Currently there are no class ivars and generation of class
variables for the root of the inheritance has been removed. It
causes multiple defines if there are two root classes in the
link, because each will define its own identically-named offset
variable. */
 
class_ivars = NULL_TREE;
/* TODO: Add total size of class variables when implemented. */
instanceSize = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_v2_class_template));
 
/* So now build the META CLASS structs. */
/* static struct class_ro_t _OBJC_METACLASS_Foo = { ... }; */
 
decl = start_var_decl (objc_v2_class_ro_template,
newabi_append_ro (IDENTIFIER_POINTER
(DECL_NAME (metaclass_decl))));
 
/* TODO: ivarLayout needs t be built. */
initlist =
build_v2_class_ro_t_initializer (TREE_TYPE (decl), name_expr,
(flags | cls_flags), instanceStart,
instanceSize, ivarLayout,
class_methods, protocol_decl,
class_ivars, NULL_TREE);
/* The ROs sit in the default const section. */
OBJCMETA (decl, objc_meta, meta_base);
finish_var_decl (decl, initlist);
 
/* static struct class_t _OBJC_METACLASS_Foo = { ... }; */
initlist =
build_v2_class_t_initializer (TREE_TYPE (metaclass_decl),
root_expr,
metaclass_superclass_expr,
build_fold_addr_expr (decl),
build_fold_addr_expr (UOBJC_V2_CACHE_decl),
build_fold_addr_expr (UOBJC_V2_VTABLE_decl));
/* The class section attributes are set when they are created. */
finish_var_decl (metaclass_decl, initlist);
impent->meta_decl = metaclass_decl;
 
/* So now build the CLASS structs. */
 
flags = 0x0; /* ... */
if (!my_super_id)
flags |= 0x02; /* RO_ROOT: this is a root class */
 
if (DECL_VISIBILITY (class_decl) == VISIBILITY_HIDDEN)
flags |= 0x10; /* RO_HIDDEN, OBJC2_CLS_HIDDEN; */
 
if (objc2_objc_exception_attr (impent->imp_template))
flags |= 0x20; /* RO_EXCEPTION */
 
if (CLASS_NST_METHODS (impent->imp_context))
{
snprintf (buf, BUFSIZE, "_OBJC_InstanceMethods_%s",
IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)));
inst_methods =
generate_v2_dispatch_table (CLASS_NST_METHODS (impent->imp_context),
buf, meta_clai_meth);
}
 
/* Sort out the ivars before we try to compute the class sizes. */
if ((chain = CLASS_IVARS (impent->imp_template)))
{
snprintf (buf, BUFSIZE, "_OBJC_InstanceIvars_%s",
IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)));
inst_ivars = generate_v2_ivars_list (chain, buf, meta_clai_vars,
impent->imp_template);
}
 
/* Compute instanceStart. */
gcc_assert (CLASS_STATIC_TEMPLATE (impent->imp_template));
field = TYPE_FIELDS (CLASS_STATIC_TEMPLATE (impent->imp_template));
if (my_super_id && field && TREE_CHAIN (field))
field = TREE_CHAIN (field);
 
firstIvar = field;
 
while (firstIvar && TREE_CODE (firstIvar) != FIELD_DECL)
firstIvar = TREE_CHAIN (firstIvar);
 
gcc_assert (inst_ivars? (firstIvar != NULL_TREE): true);
 
/* Compute instanceSize. */
while (field && TREE_CHAIN (field)
&& TREE_CODE (TREE_CHAIN (field)) == FIELD_DECL)
field = TREE_CHAIN (field);
 
if (field && TREE_CODE (field) == FIELD_DECL)
instanceSize = int_byte_position (field) * BITS_PER_UNIT
+ tree_low_cst (DECL_SIZE (field), 0);
else
instanceSize = 0;
instanceSize /= BITS_PER_UNIT;
 
props = generate_v2_property_table (NULL_TREE, impent->imp_context);
 
/* If the class has no ivars, instanceStart should be set to the
superclass's instanceSize. */
instanceStart =
(inst_ivars != NULL_TREE) ? (unsigned) int_byte_position (firstIvar)
: instanceSize;
 
/* static struct class_ro_t _OBJC_CLASS_Foo = { ... }; */
decl = start_var_decl (objc_v2_class_ro_template,
newabi_append_ro (IDENTIFIER_POINTER
(DECL_NAME (class_decl))));
 
initlist =
build_v2_class_ro_t_initializer (TREE_TYPE (decl), name_expr,
(flags | cls_flags), instanceStart,
instanceSize, ivarLayout,
inst_methods, protocol_decl,
inst_ivars, props);
/* The ROs sit in the default const section. */
OBJCMETA (decl, objc_meta, meta_base);
finish_var_decl (decl, initlist);
 
/* static struct class_t _OBJC_CLASS_Foo = { ... }; */
initlist = build_v2_class_t_initializer (TREE_TYPE (class_decl),
build_fold_addr_expr (metaclass_decl),
class_superclass_expr,
build_fold_addr_expr (decl),
build_fold_addr_expr (UOBJC_V2_CACHE_decl),
build_fold_addr_expr (UOBJC_V2_VTABLE_decl));
 
/* The class section attributes are set when they are created. */
finish_var_decl (class_decl, initlist);
impent->class_decl = class_decl;
 
objc_v2_add_to_class_list (class_decl);
if (has_load_impl (CLASS_CLS_METHODS (impent->imp_context)))
objc_v2_add_to_nonlazy_class_list (class_decl);
 
if (flags & 0x20) /* RO_EXCEPTION */
objc_v2_add_to_ehtype_list (CLASS_NAME (impent->imp_template));
}
 
/* This routine outputs the (ivar_reference_offset, offset)
tuples. */
 
static void
build_v2_ivar_offset_ref_table (void)
{
int count;
ivarref_entry *ref;
 
if (!ivar_offset_refs || !VEC_length (ivarref_entry, ivar_offset_refs))
return;
 
FOR_EACH_VEC_ELT (ivarref_entry, ivar_offset_refs, count, ref)
finish_var_decl (ref->decl, ref->offset);
}
 
/* static int _OBJC_IMAGE_INFO[2] = { 0, 16 | flags }; */
 
static void
generate_v2_objc_image_info (void)
{
tree decl, array_type;
VEC(constructor_elt,gc) *v = NULL;
int flags =
((flag_replace_objc_classes && imp_count ? 1 : 0)
| (flag_objc_gc ? 2 : 0));
 
flags |= 16;
 
array_type = build_sized_array_type (integer_type_node, 2);
 
decl = start_var_decl (array_type, "_OBJC_ImageInfo");
 
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, integer_zero_node);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, build_int_cst (integer_type_node, flags));
/* The Runtime wants this. */
DECL_PRESERVE_P (decl) = 1;
OBJCMETA (decl, objc_meta, meta_info);
finish_var_decl (decl, objc_build_constructor (TREE_TYPE (decl), v));
}
 
static void
objc_generate_v2_next_metadata (void)
{
struct imp_entry *impent;
 
/* FIXME: Make sure that we generate no metadata if there is nothing
to put into it. */
 
gcc_assert (!objc_static_instances); /* Not for NeXT */
 
build_metadata_templates ();
 
for (impent = imp_list; impent; impent = impent->next)
{
/* If -gen-decls is present, Dump the @interface of each class.
TODO: Dump the classes in the order they were found, rather
than in reverse order as we are doing now. */
if (flag_gen_declaration)
dump_interface (gen_declaration_file, impent->imp_context);
 
/* all of the following reference the string pool... */
if (TREE_CODE (impent->imp_context) == CLASS_IMPLEMENTATION_TYPE)
generate_v2_class_structs (impent);
else
generate_v2_category (impent);
}
 
build_next_selector_translation_table ();
build_v2_message_ref_translation_table ();
 
/* This will add "Protocol" to the class refs. */
generate_v2_protocols ();
 
build_v2_classrefs_table ();
build_v2_super_classrefs_table (/*metaclass= */false);
build_v2_super_classrefs_table (/*metaclass= */true);
 
build_v2_ivar_offset_ref_table ();
 
build_v2_protocol_list_translation_table ();
build_v2_protocol_list_address_table ();
 
build_v2_address_table (class_list, "_OBJC_ClassList$",
meta_label_classlist);
build_v2_address_table (category_list, "_OBJC_CategoryList$",
meta_label_categorylist);
build_v2_address_table (nonlazy_class_list, "_OBJC_NonLazyClassList$",
meta_label_nonlazy_classlist);
build_v2_address_table (nonlazy_category_list, "_OBJC_NonLazyCategoryList$",
meta_label_nonlazy_categorylist);
 
/* This conveys information on GC usage and zero-link. */
generate_v2_objc_image_info ();
 
/* Generate catch objects for eh, if any are needed. */
build_v2_eh_catch_objects ();
 
/* Emit the string table last. */
generate_strings ();
}
 
/* NOTE --- Output NeXT V2 Exceptions --- */
 
static GTY(()) tree objc_v2_ehtype_template;
static GTY(()) tree next_v2_ehvtable_decl;
static GTY(()) tree next_v2_EHTYPE_id_decl;
 
static void
build_v2_ehtype_template (void)
{
tree decls, *chain = NULL;
objc_v2_ehtype_template = objc_start_struct (get_identifier (UTAG_V2_EH_TYPE));
 
/* void *_objc_ehtype_vtable; */
decls = add_field_decl (ptr_type_node, "_objc_ehtype_vtable_ptr", &chain);
 
/* const char *className; */
add_field_decl (string_type_node, "className", &chain);
 
/* struct class_t *const cls; */
add_field_decl (build_pointer_type (objc_v2_class_template), "cls", &chain);
 
objc_finish_struct (objc_v2_ehtype_template, decls);
}
 
/* Template for the Objective-C family typeinfo type for ABI=2. This
starts off the same as the gxx/cxx eh typeinfo.
 
struct _objc_ehtype_t
{
void *_objc_ehtype_vtable_ptr; - as per c++
const char *className; - as per c++
struct class_t *const cls;
}
*/
 
/* This routine builds initializer list for object of type struct _objc_ehtype_t.
*/
 
static tree
objc2_build_ehtype_initializer (tree name, tree cls)
{
VEC(constructor_elt,gc) *initlist = NULL;
tree addr, offs;
 
/* This is done the same way as c++, missing the two first entries
in the parent vtable. NOTE: there is a fix-me in the Apple/NeXT
runtime source about this so, perhaps, this will change at some
point. */
/* _objc_ehtype_vtable + 2*sizeof(void*) */
if (!next_v2_ehvtable_decl)
{
next_v2_ehvtable_decl =
start_var_decl (ptr_type_node, TAG_NEXT_EHVTABLE_NAME);
TREE_STATIC (next_v2_ehvtable_decl) = 0;
DECL_EXTERNAL (next_v2_ehvtable_decl) = 1;
TREE_PUBLIC (next_v2_ehvtable_decl) = 1;
}
addr = build_fold_addr_expr_with_type (next_v2_ehvtable_decl, ptr_type_node);
offs = size_int (2 * int_cst_value (TYPE_SIZE_UNIT (ptr_type_node)));
addr = fold_build_pointer_plus (addr, offs);
 
CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, addr);
 
/* className */
CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, name);
 
/* cls */
CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, cls);
 
return objc_build_constructor (objc_v2_ehtype_template, initlist);
}
 
static tree
build_ehtype (tree name, const char *eh_name, bool weak)
{
tree name_expr, class_name_expr, ehtype_decl, inits;
 
name_expr = add_objc_string (name, class_names);
/* Extern ref. for the class. ??? Maybe we can look this up
somewhere. */
class_name_expr =
create_extern_decl (objc_v2_class_template,
objc_build_internal_classname (name, false));
class_name_expr = build_fold_addr_expr (class_name_expr);
ehtype_decl = create_global_decl (objc_v2_ehtype_template, eh_name);
if (weak)
DECL_WEAK (ehtype_decl) = 1;
inits = objc2_build_ehtype_initializer (name_expr, class_name_expr);
OBJCMETA (ehtype_decl, objc_meta, meta_ehtype);
finish_var_decl (ehtype_decl, inits);
return ehtype_decl;
}
 
/* This routine returns TRUE if CLS or any of its super classes has
__attribute__ ((objc_exception)). */
 
static bool
objc2_objc_exception_attr (tree cls)
{
while (cls)
{
if (CLASS_HAS_EXCEPTION_ATTR (cls))
return true;
cls = lookup_interface (CLASS_SUPER_NAME (cls));
}
 
return false;
}
 
static bool
is_implemented (tree name)
{
struct imp_entry *t;
for (t = imp_list; t; t = t->next)
if (TREE_CODE (t->imp_context) == CLASS_IMPLEMENTATION_TYPE
&& CLASS_NAME (t->imp_template) == name)
return true;
 
return false;
}
 
/* We will build catch objects:
for any type implemented here.
for any type used in a catch that has no exception attribute. */
static void build_v2_eh_catch_objects (void)
{
int count=0;
ident_data_tuple *ref;
 
if (!ehtype_list || !VEC_length (ident_data_tuple, ehtype_list))
return;
 
FOR_EACH_VEC_ELT (ident_data_tuple, ehtype_list, count, ref)
{
char buf[BUFSIZE];
bool impl = is_implemented (ref->ident);
bool excpt = objc2_objc_exception_attr (lookup_interface (ref->ident));
snprintf (buf, BUFSIZE, "OBJC_EHTYPE_$_%s", IDENTIFIER_POINTER (ref->ident));
if (!impl && excpt)
/* The User says this class has a catcher already. */
ref->data = create_extern_decl (objc_v2_ehtype_template, buf);
else
/* Create a catcher, weak if it wasn't marked. */
ref->data = build_ehtype (ref->ident, buf, !excpt);
}
}
 
static tree
lookup_ehtype_ref (tree id)
{
int count=0;
ident_data_tuple *ref;
 
if (!ehtype_list || !VEC_length (ident_data_tuple, ehtype_list))
return NULL_TREE;
 
FOR_EACH_VEC_ELT (ident_data_tuple, ehtype_list, count, ref)
if (ref->ident == id)
return ref->data;
return NULL_TREE;
}
 
/* This hook, called via lang_eh_runtime_type, generates a runtime
object which is either the address of the 'OBJC_EHTYPE_$_class'
object or address of external OBJC_EHTYPE_id object. */
static tree
next_runtime_02_eh_type (tree type)
{
tree t;
 
if (type == error_mark_node
/*|| errorcount || sorrycount*/)
goto err_mark_in;
 
if (POINTER_TYPE_P (type) && objc_is_object_id (TREE_TYPE (type)))
{
if (!next_v2_EHTYPE_id_decl)
{
/* This is provided by the Apple/NeXT libobjc.dylib so we
need only to reference it. */
next_v2_EHTYPE_id_decl =
start_var_decl (objc_v2_ehtype_template, "OBJC_EHTYPE_id");
DECL_EXTERNAL (next_v2_EHTYPE_id_decl) = 1;
TREE_PUBLIC (next_v2_EHTYPE_id_decl) = 1;
TREE_STATIC (next_v2_EHTYPE_id_decl) = 0;
}
return build_fold_addr_expr (next_v2_EHTYPE_id_decl);
}
 
if (!POINTER_TYPE_P (type) || !TYPED_OBJECT (TREE_TYPE (type)))
{
#ifdef OBJCPLUS
/* This routine is also called for c++'s catch clause; in which
case, we use c++'s typeinfo decl. */
return build_eh_type_type (type);
#else
error ("non-objective-c type '%T' cannot be caught", type);
goto err_mark_in;
#endif
}
else
t = OBJC_TYPE_NAME (TREE_TYPE (type));
 
/* We have to build a reference to the OBJC_EHTYPE_<Class>. */
t = lookup_ehtype_ref (t);
if (!t)
goto err_mark_in;
 
return build_fold_addr_expr (t);
 
err_mark_in:
return error_mark_node;
}
 
static GTY(()) tree objc_eh_personality_decl;
 
static tree
objc_eh_personality (void)
{
if (!objc_eh_personality_decl)
objc_eh_personality_decl = build_personality_function ("objc");
return objc_eh_personality_decl;
}
 
/* NOTE --- interfaces --- */
 
static tree
build_throw_stmt (location_t loc, tree throw_expr, bool rethrown)
{
tree t;
if (rethrown)
/* We have a separate re-throw entry. */
t = build_function_call_vec (loc, objc_rethrow_exception_decl, NULL, NULL);
else
{
/* Throw like the others... */
VEC(tree, gc) *parms = VEC_alloc (tree, gc, 1);
VEC_quick_push (tree, parms, throw_expr);
t = build_function_call_vec (loc, objc_exception_throw_decl, parms, NULL);
VEC_free (tree, gc, parms);
}
return add_stmt (t);
}
 
/* Build __builtin_eh_pointer. */
 
static tree
objc_build_exc_ptr (struct objc_try_context **x ATTRIBUTE_UNUSED)
{
tree t;
t = builtin_decl_explicit (BUILT_IN_EH_POINTER);
t = build_call_expr (t, 1, integer_zero_node);
return fold_convert (objc_object_type, t);
}
 
static tree begin_catch (struct objc_try_context **cur_try_context, tree type,
tree decl, tree compound, bool ellipsis ATTRIBUTE_UNUSED)
{
tree t;
 
/* Record the data for the catch in the try context so that we can
finalize it later. Ellipsis is signalled by a NULL entry. */
if (ellipsis)
t = build_stmt (input_location, CATCH_EXPR, NULL_TREE, compound);
else
t = build_stmt (input_location, CATCH_EXPR, type, compound);
(*cur_try_context)->current_catch = t;
 
/* Initialize the decl from the EXC_PTR_EXPR we get from the runtime. */
t = objc_build_exc_ptr (cur_try_context);
t = convert (TREE_TYPE (decl), t);
/* FIXME: location. */
if (type && type != error_mark_node)
{
t = build1(NOP_EXPR, ptr_type_node, t);
t = build_function_call (input_location, objc2_begin_catch_decl,
tree_cons (NULL_TREE, t, NULL_TREE));
 
/* We might want to build a catch object for this (if it's not
id). */
if (POINTER_TYPE_P (type)
&& !objc_is_object_id (TREE_TYPE (type))
&& TYPED_OBJECT (TREE_TYPE (type)))
objc_v2_add_to_ehtype_list (OBJC_TYPE_NAME (TREE_TYPE (type)));
}
return build2 (MODIFY_EXPR, void_type_node, decl, t);
}
 
/* try { catch-body } finally { objc_end_catch (); } */
static void
finish_catch (struct objc_try_context **cur_try_context, tree curr_catch)
{
struct objc_try_context *ct;
tree try_exp, func, *l, t ;
location_t loc = (*cur_try_context)->try_locus;
 
if (!curr_catch || curr_catch == error_mark_node)
return;
 
t = CATCH_BODY (curr_catch);
if (TREE_CODE (t) == BIND_EXPR)
{
/* Usual case of @catch (objc-expr). */
objc_begin_try_stmt (loc, BIND_EXPR_BODY (t));
BIND_EXPR_BODY (t) = NULL_TREE;
l = &BIND_EXPR_BODY (t);
}
else
{
/* NULL entry, meaning @catch (...). */
objc_begin_try_stmt (loc, t);
CATCH_BODY (curr_catch) = NULL_TREE;
l = &CATCH_BODY (curr_catch);
}
 
/* Pick up the new context we made in begin_try above... */
ct = *cur_try_context;
func = build_function_call_vec (loc, objc2_end_catch_decl, NULL, NULL);
append_to_statement_list (func, &ct->finally_body);
try_exp = build_stmt (loc, TRY_FINALLY_EXPR, ct->try_body, ct->finally_body);
*cur_try_context = ct->outer;
free (ct);
append_to_statement_list (try_exp, l);
append_to_statement_list (curr_catch, &((*cur_try_context)->catch_list));
}
 
static tree
finish_try_stmt (struct objc_try_context **cur_try_context)
{
struct objc_try_context *c = *cur_try_context;
tree stmt = c->try_body;
if (c->catch_list)
stmt = build_stmt (c->try_locus, TRY_CATCH_EXPR, stmt, c->catch_list);
if (c->finally_body)
stmt = build_stmt (c->try_locus, TRY_FINALLY_EXPR, stmt, c->finally_body);
return stmt;
}
 
#include "gt-objc-objc-next-runtime-abi-02.h"
/gcc/objc/objc-act.c
0,0 → 1,10093
/* Implement classes and message passing for Objective C.
Copyright (C) 1992, 1993, 1994, 1995, 1997, 1998, 1999, 2000, 2001,
2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011
Free Software Foundation, Inc.
Contributed by Steve Naroff.
 
This file is part of GCC.
 
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
 
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
 
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "tree.h"
 
#ifdef OBJCPLUS
#include "cp-tree.h"
#else
#include "c-tree.h"
#include "c-lang.h"
#endif
 
#include "c-family/c-common.h"
#include "c-family/c-objc.h"
#include "c-family/c-pragma.h"
#include "c-family/c-format.h"
#include "flags.h"
#include "langhooks.h"
#include "objc-act.h"
#include "objc-map.h"
#include "input.h"
#include "function.h"
#include "output.h"
#include "toplev.h"
#include "ggc.h"
#include "debug.h"
#include "c-family/c-target.h"
#include "diagnostic-core.h"
#include "intl.h"
#include "cgraph.h"
#include "tree-iterator.h"
#include "hashtab.h"
#include "langhooks-def.h"
/* Different initialization, code gen and meta data generation for each
runtime. */
#include "objc-runtime-hooks.h"
/* Routines used mainly by the runtimes. */
#include "objc-runtime-shared-support.h"
/* For default_tree_printer (). */
#include "tree-pretty-print.h"
 
/* For enum gimplify_status */
#include "gimple.h"
 
/* For encode_method_prototype(). */
#include "objc-encoding.h"
 
static unsigned int should_call_super_dealloc = 0;
 
/* When building Objective-C++, we are not linking against the C front-end
and so need to replicate the C tree-construction functions in some way. */
#ifdef OBJCPLUS
#define OBJCP_REMAP_FUNCTIONS
#include "objcp-decl.h"
#endif /* OBJCPLUS */
 
/* This is the default way of generating a method name. */
/* This has the problem that "test_method:argument:" and
"test:method_argument:" will generate the same name
("_i_Test__test_method_argument_" for an instance method of the
class "Test"), so you can't have them both in the same class!
Moreover, the demangling (going from
"_i_Test__test_method_argument" back to the original name) is
undefined because there are two correct ways of demangling the
name. */
#ifndef OBJC_GEN_METHOD_LABEL
#define OBJC_GEN_METHOD_LABEL(BUF, IS_INST, CLASS_NAME, CAT_NAME, SEL_NAME, NUM) \
do { \
char *temp; \
sprintf ((BUF), "_%s_%s_%s_%s", \
((IS_INST) ? "i" : "c"), \
(CLASS_NAME), \
((CAT_NAME)? (CAT_NAME) : ""), \
(SEL_NAME)); \
for (temp = (BUF); *temp; temp++) \
if (*temp == ':') *temp = '_'; \
} while (0)
#endif
 
/* These need specifying. */
#ifndef OBJC_FORWARDING_STACK_OFFSET
#define OBJC_FORWARDING_STACK_OFFSET 0
#endif
 
#ifndef OBJC_FORWARDING_MIN_OFFSET
#define OBJC_FORWARDING_MIN_OFFSET 0
#endif
 
/*** Private Interface (procedures) ***/
 
/* Init stuff. */
static void synth_module_prologue (void);
 
/* Code generation. */
 
static tree start_class (enum tree_code, tree, tree, tree, tree);
static tree continue_class (tree);
static void finish_class (tree);
static void start_method_def (tree, tree);
 
static tree start_protocol (enum tree_code, tree, tree, tree);
static tree build_method_decl (enum tree_code, tree, tree, tree, bool);
static tree objc_add_method (tree, tree, int, bool);
static tree add_instance_variable (tree, objc_ivar_visibility_kind, tree);
static tree build_ivar_reference (tree);
static tree is_ivar (tree, tree);
 
/* We only need the following for ObjC; ObjC++ will use C++'s definition
of DERIVED_FROM_P. */
#ifndef OBJCPLUS
static bool objc_derived_from_p (tree, tree);
#define DERIVED_FROM_P(PARENT, CHILD) objc_derived_from_p (PARENT, CHILD)
#endif
 
/* Property. */
static void objc_gen_property_data (tree, tree);
static void objc_synthesize_getter (tree, tree, tree);
static void objc_synthesize_setter (tree, tree, tree);
static tree lookup_property (tree, tree);
static tree lookup_property_in_list (tree, tree);
static tree lookup_property_in_protocol_list (tree, tree);
static void build_common_objc_property_accessor_helpers (void);
 
static void objc_xref_basetypes (tree, tree);
 
static tree get_class_ivars (tree, bool);
 
static void build_fast_enumeration_state_template (void);
 
#ifdef OBJCPLUS
static void objc_generate_cxx_cdtors (void);
#endif
 
/* objc attribute */
static void objc_decl_method_attributes (tree*, tree, int);
static tree build_keyword_selector (tree);
 
static void hash_init (void);
 
/* Hash tables to manage the global pool of method prototypes. Each
of these maps map a method name (selector) identifier to either a
single tree (for methods with a single method prototype) or a
TREE_VEC (for methods with multiple method prototypes). */
static GTY(()) objc_map_t instance_method_map = 0;
static GTY(()) objc_map_t class_method_map = 0;
 
/* Hash tables to manage the global pool of class names. */
 
static GTY(()) objc_map_t class_name_map = 0;
static GTY(()) objc_map_t alias_name_map = 0;
 
static tree lookup_method (tree, tree);
static tree lookup_method_static (tree, tree, int);
 
static void interface_hash_init (void);
static tree add_interface (tree, tree);
static void add_category (tree, tree);
static inline tree lookup_category (tree, tree);
 
/* Protocols. */
 
static tree lookup_protocol (tree, bool, bool);
static tree lookup_and_install_protocols (tree, bool);
 
#ifdef OBJCPLUS
static void really_start_method (tree, tree);
#else
static void really_start_method (tree, struct c_arg_info *);
#endif
static int comp_proto_with_proto (tree, tree, int);
static tree objc_decay_parm_type (tree);
 
/* Utilities for debugging and error diagnostics. */
 
static char *gen_type_name (tree);
static char *gen_type_name_0 (tree);
static char *gen_method_decl (tree);
static char *gen_declaration (tree);
 
/* Everything else. */
 
static void generate_struct_by_value_array (void) ATTRIBUTE_NORETURN;
 
static void mark_referenced_methods (void);
static bool objc_type_valid_for_messaging (tree type, bool allow_classes);
static tree check_duplicates (tree, int, int);
 
/*** Private Interface (data) ***/
/* Flags for lookup_method_static(). */
 
/* Look for class methods. */
#define OBJC_LOOKUP_CLASS 1
/* Do not examine superclasses. */
#define OBJC_LOOKUP_NO_SUPER 2
/* Disable returning an instance method of a root class when a class
method can't be found. */
#define OBJC_LOOKUP_NO_INSTANCE_METHODS_OF_ROOT_CLASS 4
 
/* The OCTI_... enumeration itself is in objc/objc-act.h. */
tree objc_global_trees[OCTI_MAX];
 
struct imp_entry *imp_list = 0;
int imp_count = 0; /* `@implementation' */
int cat_count = 0; /* `@category' */
 
objc_ivar_visibility_kind objc_ivar_visibility;
 
/* Use to generate method labels. */
static int method_slot = 0;
 
/* Flag to say whether methods in a protocol are optional or
required. */
static bool objc_method_optional_flag = false;
 
static int objc_collecting_ivars = 0;
 
/* Flag that is set to 'true' while we are processing a class
extension. Since a class extension just "reopens" the main
@interface, this can be used to determine if we are in the main
@interface, or in a class extension. */
static bool objc_in_class_extension = false;
 
static char *errbuf; /* Buffer for error diagnostics */
 
/* An array of all the local variables in the current function that
need to be marked as volatile. */
VEC(tree,gc) *local_variables_to_volatilize = NULL;
 
/* Store all constructed constant strings in a hash table so that
they get uniqued properly. */
 
struct GTY(()) string_descriptor {
/* The literal argument . */
tree literal;
 
/* The resulting constant string. */
tree constructor;
};
 
static GTY((param_is (struct string_descriptor))) htab_t string_htab;
 
FILE *gen_declaration_file;
 
/* Hooks for stuff that differs between runtimes. */
objc_runtime_hooks runtime;
 
/* Create a temporary variable of type 'type'. If 'name' is set, uses
the specified name, else use no name. Returns the declaration of
the type. The 'name' is mostly useful for debugging.
*/
tree
objc_create_temporary_var (tree type, const char *name)
{
tree decl;
 
if (name != NULL)
{
decl = build_decl (input_location,
VAR_DECL, get_identifier (name), type);
}
else
{
decl = build_decl (input_location,
VAR_DECL, NULL_TREE, type);
}
TREE_USED (decl) = 1;
DECL_ARTIFICIAL (decl) = 1;
DECL_IGNORED_P (decl) = 1;
DECL_CONTEXT (decl) = current_function_decl;
 
return decl;
}
 
/* Some platforms pass small structures through registers versus
through an invisible pointer. Determine at what size structure is
the transition point between the two possibilities. */
 
static void
generate_struct_by_value_array (void)
{
tree type;
tree decls;
int i, j;
int aggregate_in_mem[32];
int found = 0;
 
/* Presumably no platform passes 32 byte structures in a register. */
/* ??? As an example, m64/ppc/Darwin can pass up to 8*long+13*double
in registers. */
for (i = 1; i < 32; i++)
{
char buffer[5];
tree *chain = NULL;
 
/* Create an unnamed struct that has `i' character components */
type = objc_start_struct (NULL_TREE);
 
strcpy (buffer, "c1");
decls = add_field_decl (char_type_node, buffer, &chain);
 
for (j = 1; j < i; j++)
{
sprintf (buffer, "c%d", j + 1);
add_field_decl (char_type_node, buffer, &chain);
}
objc_finish_struct (type, decls);
 
aggregate_in_mem[i] = aggregate_value_p (type, 0);
if (!aggregate_in_mem[i])
found = 1;
}
 
/* We found some structures that are returned in registers instead of memory
so output the necessary data. */
if (found)
{
for (i = 31; i >= 0; i--)
if (!aggregate_in_mem[i])
break;
printf ("#define OBJC_MAX_STRUCT_BY_VALUE %d\n", i);
}
 
exit (0);
}
 
bool
objc_init (void)
{
bool ok;
#ifdef OBJCPLUS
if (cxx_init () == false)
#else
if (c_objc_common_init () == false)
#endif
return false;
 
/* print_struct_values is triggered by -print-runtime-info (used
when building libobjc, with an empty file as input). It does not
require any ObjC setup, and it never returns.
 
-fcompare-debug is used to check the compiler output; we are
executed twice, once with flag_compare_debug set, and once with
it not set. If the flag is used together with
-print-runtime-info, we want to print the runtime info only once,
else it would be output in duplicate. So we check
flag_compare_debug to output it in only one of the invocations.
 
As a side effect, this also that means -fcompare-debug
-print-runtime-info will run the compiler twice, and compare the
generated assembler file; the first time the compiler exits
immediately (producing no file), and the second time it compiles
an empty file. This checks, as a side effect, that compiling an
empty file produces no assembler output. */
if (print_struct_values && !flag_compare_debug)
generate_struct_by_value_array ();
 
/* Set up stuff used by FE parser and all runtimes. */
errbuf = XNEWVEC (char, 1024 * 10);
interface_hash_init ();
hash_init ();
objc_encoding_init ();
/* ... and then check flags and set-up for the selected runtime ... */
if (flag_next_runtime && flag_objc_abi >= 2)
ok = objc_next_runtime_abi_02_init (&runtime);
else if (flag_next_runtime)
ok = objc_next_runtime_abi_01_init (&runtime);
else
ok = objc_gnu_runtime_abi_01_init (&runtime);
 
/* If that part of the setup failed - bail out immediately. */
if (!ok)
return false;
 
/* Generate general types and push runtime-specific decls to file scope. */
synth_module_prologue ();
 
return true;
}
 
/* This is called automatically (at the very end of compilation) by
c_write_global_declarations and cp_write_global_declarations. */
void
objc_write_global_declarations (void)
{
mark_referenced_methods ();
 
/* A missing @end might not be detected by the parser. */
if (objc_implementation_context)
{
warning (0, "%<@end%> missing in implementation context");
finish_class (objc_implementation_context);
objc_ivar_chain = NULL_TREE;
objc_implementation_context = NULL_TREE;
}
 
if (warn_selector)
{
objc_map_iterator_t i;
 
objc_map_iterator_initialize (class_method_map, &i);
while (objc_map_iterator_move_to_next (class_method_map, &i))
check_duplicates (objc_map_iterator_current_value (class_method_map, i), 0, 1);
 
objc_map_iterator_initialize (instance_method_map, &i);
while (objc_map_iterator_move_to_next (instance_method_map, &i))
check_duplicates (objc_map_iterator_current_value (instance_method_map, i), 0, 0);
}
 
/* TODO: consider an early exit here if either errorcount or sorrycount
is non-zero. Not only is it wasting time to generate the metadata,
it needlessly imposes need to re-check for things that are already
determined to be errors. */
 
/* Finalize Objective-C runtime data. No need to generate tables
and code if only checking syntax, or if generating a PCH file. */
if (!flag_syntax_only && !pch_file)
{
location_t saved_location;
 
/* If gen_declaration desired, open the output file. */
if (flag_gen_declaration)
{
char * const dumpname = concat (dump_base_name, ".decl", NULL);
gen_declaration_file = fopen (dumpname, "w");
if (gen_declaration_file == 0)
fatal_error ("can%'t open %s: %m", dumpname);
free (dumpname);
}
 
/* Set the input location to BUILTINS_LOCATION. This is good
for error messages, in case any is generated while producing
the metadata, but it also silences warnings that would be
produced when compiling with -Wpadded in case when padding is
automatically added to the built-in runtime data structure
declarations. We know about this padding, and it is fine; we
don't want users to see any warnings about it if they use
-Wpadded. */
saved_location = input_location;
input_location = BUILTINS_LOCATION;
 
/* Compute and emit the meta-data tables for this runtime. */
(*runtime.generate_metadata) ();
 
/* Restore the original location, just in case it mattered. */
input_location = saved_location;
 
/* ... and then close any declaration file we opened. */
if (gen_declaration_file)
fclose (gen_declaration_file);
}
}
 
/* Return the first occurrence of a method declaration corresponding
to sel_name in rproto_list. Search rproto_list recursively.
If is_class is 0, search for instance methods, otherwise for class
methods. */
static tree
lookup_method_in_protocol_list (tree rproto_list, tree sel_name,
int is_class)
{
tree rproto, p, m;
 
for (rproto = rproto_list; rproto; rproto = TREE_CHAIN (rproto))
{
p = TREE_VALUE (rproto);
m = NULL_TREE;
 
if (TREE_CODE (p) == PROTOCOL_INTERFACE_TYPE)
{
/* First, search the @required protocol methods. */
if (is_class)
m = lookup_method (PROTOCOL_CLS_METHODS (p), sel_name);
else
m = lookup_method (PROTOCOL_NST_METHODS (p), sel_name);
 
if (m)
return m;
 
/* If still not found, search the @optional protocol methods. */
if (is_class)
m = lookup_method (PROTOCOL_OPTIONAL_CLS_METHODS (p), sel_name);
else
m = lookup_method (PROTOCOL_OPTIONAL_NST_METHODS (p), sel_name);
 
if (m)
return m;
 
/* If still not found, search the attached protocols. */
if (PROTOCOL_LIST (p))
m = lookup_method_in_protocol_list (PROTOCOL_LIST (p),
sel_name, is_class);
if (m)
return m;
}
else
{
; /* An identifier...if we could not find a protocol. */
}
}
 
return 0;
}
 
static tree
lookup_protocol_in_reflist (tree rproto_list, tree lproto)
{
tree rproto, p;
 
/* Make sure the protocol is supported by the object on the rhs. */
if (TREE_CODE (lproto) == PROTOCOL_INTERFACE_TYPE)
{
tree fnd = 0;
for (rproto = rproto_list; rproto; rproto = TREE_CHAIN (rproto))
{
p = TREE_VALUE (rproto);
 
if (TREE_CODE (p) == PROTOCOL_INTERFACE_TYPE)
{
if (lproto == p)
fnd = lproto;
 
else if (PROTOCOL_LIST (p))
fnd = lookup_protocol_in_reflist (PROTOCOL_LIST (p), lproto);
}
 
if (fnd)
return fnd;
}
}
else
{
; /* An identifier...if we could not find a protocol. */
}
 
return 0;
}
 
void
objc_start_class_interface (tree klass, tree super_class,
tree protos, tree attributes)
{
if (flag_objc1_only && attributes)
error_at (input_location, "class attributes are not available in Objective-C 1.0");
 
objc_interface_context
= objc_ivar_context
= start_class (CLASS_INTERFACE_TYPE, klass, super_class, protos, attributes);
objc_ivar_visibility = OBJC_IVAR_VIS_PROTECTED;
}
 
void
objc_start_category_interface (tree klass, tree categ,
tree protos, tree attributes)
{
if (attributes)
{
if (flag_objc1_only)
error_at (input_location, "category attributes are not available in Objective-C 1.0");
else
warning_at (input_location, OPT_Wattributes,
"category attributes are not available in this version"
" of the compiler, (ignored)");
}
if (categ == NULL_TREE)
{
if (flag_objc1_only)
error_at (input_location, "class extensions are not available in Objective-C 1.0");
else
{
/* Iterate over all the classes and categories implemented
up to now in this compilation unit. */
struct imp_entry *t;
 
for (t = imp_list; t; t = t->next)
{
/* If we find a class @implementation with the same name
as the one we are extending, produce an error. */
if (TREE_CODE (t->imp_context) == CLASS_IMPLEMENTATION_TYPE
&& IDENTIFIER_POINTER (CLASS_NAME (t->imp_context)) == IDENTIFIER_POINTER (klass))
error_at (input_location,
"class extension for class %qE declared after its %<@implementation%>",
klass);
}
}
}
objc_interface_context
= start_class (CATEGORY_INTERFACE_TYPE, klass, categ, protos, NULL_TREE);
objc_ivar_chain
= continue_class (objc_interface_context);
}
 
void
objc_start_protocol (tree name, tree protos, tree attributes)
{
if (flag_objc1_only && attributes)
error_at (input_location, "protocol attributes are not available in Objective-C 1.0");
 
objc_interface_context
= start_protocol (PROTOCOL_INTERFACE_TYPE, name, protos, attributes);
objc_method_optional_flag = false;
}
 
void
objc_continue_interface (void)
{
objc_ivar_chain
= continue_class (objc_interface_context);
}
 
void
objc_finish_interface (void)
{
finish_class (objc_interface_context);
objc_interface_context = NULL_TREE;
objc_method_optional_flag = false;
objc_in_class_extension = false;
}
 
void
objc_start_class_implementation (tree klass, tree super_class)
{
objc_implementation_context
= objc_ivar_context
= start_class (CLASS_IMPLEMENTATION_TYPE, klass, super_class, NULL_TREE,
NULL_TREE);
objc_ivar_visibility = OBJC_IVAR_VIS_PROTECTED;
}
 
void
objc_start_category_implementation (tree klass, tree categ)
{
objc_implementation_context
= start_class (CATEGORY_IMPLEMENTATION_TYPE, klass, categ, NULL_TREE,
NULL_TREE);
objc_ivar_chain
= continue_class (objc_implementation_context);
}
 
void
objc_continue_implementation (void)
{
objc_ivar_chain
= continue_class (objc_implementation_context);
}
 
void
objc_finish_implementation (void)
{
#ifdef OBJCPLUS
if (flag_objc_call_cxx_cdtors)
objc_generate_cxx_cdtors ();
#endif
 
if (objc_implementation_context)
{
finish_class (objc_implementation_context);
objc_ivar_chain = NULL_TREE;
objc_implementation_context = NULL_TREE;
}
else
warning (0, "%<@end%> must appear in an @implementation context");
}
 
void
objc_set_visibility (objc_ivar_visibility_kind visibility)
{
if (visibility == OBJC_IVAR_VIS_PACKAGE)
{
if (flag_objc1_only)
error ("%<@package%> is not available in Objective-C 1.0");
else
warning (0, "%<@package%> presently has the same effect as %<@public%>");
}
objc_ivar_visibility = visibility;
}
 
void
objc_set_method_opt (bool optional)
{
if (flag_objc1_only)
{
if (optional)
error_at (input_location, "%<@optional%> is not available in Objective-C 1.0");
else
error_at (input_location, "%<@required%> is not available in Objective-C 1.0");
}
 
objc_method_optional_flag = optional;
if (!objc_interface_context
|| TREE_CODE (objc_interface_context) != PROTOCOL_INTERFACE_TYPE)
{
if (optional)
error ("%<@optional%> is allowed in @protocol context only");
else
error ("%<@required%> is allowed in @protocol context only");
objc_method_optional_flag = false;
}
}
 
/* This routine looks for a given PROPERTY in a list of CLASS, CATEGORY, or
PROTOCOL. */
static tree
lookup_property_in_list (tree chain, tree property)
{
tree x;
for (x = CLASS_PROPERTY_DECL (chain); x; x = TREE_CHAIN (x))
if (PROPERTY_NAME (x) == property)
return x;
return NULL_TREE;
}
 
/* This routine looks for a given PROPERTY in the tree chain of RPROTO_LIST. */
static tree lookup_property_in_protocol_list (tree rproto_list, tree property)
{
tree rproto, x;
for (rproto = rproto_list; rproto; rproto = TREE_CHAIN (rproto))
{
tree p = TREE_VALUE (rproto);
if (TREE_CODE (p) == PROTOCOL_INTERFACE_TYPE)
{
if ((x = lookup_property_in_list (p, property)))
return x;
if (PROTOCOL_LIST (p))
return lookup_property_in_protocol_list (PROTOCOL_LIST (p), property);
}
else
{
; /* An identifier...if we could not find a protocol. */
}
}
return NULL_TREE;
}
 
/* This routine looks up the PROPERTY in current INTERFACE, its categories and up the
chain of interface hierarchy. */
static tree
lookup_property (tree interface_type, tree property)
{
tree inter = interface_type;
while (inter)
{
tree x, category;
if ((x = lookup_property_in_list (inter, property)))
return x;
/* Failing that, look for the property in each category of the class. */
category = inter;
while ((category = CLASS_CATEGORY_LIST (category)))
{
if ((x = lookup_property_in_list (category, property)))
return x;
 
/* When checking a category, also check the protocols
attached with the category itself. */
if (CLASS_PROTOCOL_LIST (category)
&& (x = lookup_property_in_protocol_list
(CLASS_PROTOCOL_LIST (category), property)))
return x;
}
 
/* Failing to find in categories, look for property in protocol list. */
if (CLASS_PROTOCOL_LIST (inter)
&& (x = lookup_property_in_protocol_list
(CLASS_PROTOCOL_LIST (inter), property)))
return x;
 
/* Failing that, climb up the inheritance hierarchy. */
inter = lookup_interface (CLASS_SUPER_NAME (inter));
}
return inter;
}
 
/* This routine is called by the parser when a
@property... declaration is found. 'decl' is the declaration of
the property (type/identifier), and the other arguments represent
property attributes that may have been specified in the Objective-C
declaration. 'parsed_property_readonly' is 'true' if the attribute
'readonly' was specified, and 'false' if not; similarly for the
other bool parameters. 'parsed_property_getter_ident' is NULL_TREE
if the attribute 'getter' was not specified, and is the identifier
corresponding to the specified getter if it was; similarly for
'parsed_property_setter_ident'. */
void
objc_add_property_declaration (location_t location, tree decl,
bool parsed_property_readonly, bool parsed_property_readwrite,
bool parsed_property_assign, bool parsed_property_retain,
bool parsed_property_copy, bool parsed_property_nonatomic,
tree parsed_property_getter_ident, tree parsed_property_setter_ident)
{
tree property_decl;
tree x;
/* 'property_readonly' and 'property_assign_semantics' are the final
attributes of the property after all parsed attributes have been
considered (eg, if we parsed no 'readonly' and no 'readwrite', ie
parsed_property_readonly = false and parsed_property_readwrite =
false, then property_readonly will be false because the default
is readwrite). */
bool property_readonly = false;
objc_property_assign_semantics property_assign_semantics = OBJC_PROPERTY_ASSIGN;
bool property_extension_in_class_extension = false;
 
if (flag_objc1_only)
error_at (input_location, "%<@property%> is not available in Objective-C 1.0");
 
if (parsed_property_readonly && parsed_property_readwrite)
{
error_at (location, "%<readonly%> attribute conflicts with %<readwrite%> attribute");
/* In case of conflicting attributes (here and below), after
producing an error, we pick one of the attributes and keep
going. */
property_readonly = false;
}
else
{
if (parsed_property_readonly)
property_readonly = true;
 
if (parsed_property_readwrite)
property_readonly = false;
}
 
if (parsed_property_readonly && parsed_property_setter_ident)
{
error_at (location, "%<readonly%> attribute conflicts with %<setter%> attribute");
property_readonly = false;
}
 
if (parsed_property_assign && parsed_property_retain)
{
error_at (location, "%<assign%> attribute conflicts with %<retain%> attribute");
property_assign_semantics = OBJC_PROPERTY_RETAIN;
}
else if (parsed_property_assign && parsed_property_copy)
{
error_at (location, "%<assign%> attribute conflicts with %<copy%> attribute");
property_assign_semantics = OBJC_PROPERTY_COPY;
}
else if (parsed_property_retain && parsed_property_copy)
{
error_at (location, "%<retain%> attribute conflicts with %<copy%> attribute");
property_assign_semantics = OBJC_PROPERTY_COPY;
}
else
{
if (parsed_property_assign)
property_assign_semantics = OBJC_PROPERTY_ASSIGN;
 
if (parsed_property_retain)
property_assign_semantics = OBJC_PROPERTY_RETAIN;
 
if (parsed_property_copy)
property_assign_semantics = OBJC_PROPERTY_COPY;
}
 
if (!objc_interface_context)
{
error_at (location, "property declaration not in @interface or @protocol context");
return;
}
 
/* At this point we know that we are either in an interface, a
category, or a protocol. */
 
/* We expect a FIELD_DECL from the parser. Make sure we didn't get
something else, as that would confuse the checks below. */
if (TREE_CODE (decl) != FIELD_DECL)
{
error_at (location, "invalid property declaration");
return;
}
 
/* Do some spot-checks for the most obvious invalid types. */
 
if (TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE)
{
error_at (location, "property can not be an array");
return;
}
 
/* The C++/ObjC++ parser seems to reject the ':' for a bitfield when
parsing, while the C/ObjC parser accepts it and gives us a
FIELD_DECL with a DECL_INITIAL set. So we use the DECL_INITIAL
to check for a bitfield when doing ObjC. */
#ifndef OBJCPLUS
if (DECL_INITIAL (decl))
{
/* A @property is not an actual variable, but it is a way to
describe a pair of accessor methods, so its type (which is
the type of the return value of the getter and the first
argument of the setter) can't be a bitfield (as return values
and arguments of functions can not be bitfields). The
underlying instance variable could be a bitfield, but that is
a different matter. */
error_at (location, "property can not be a bit-field");
return;
}
#endif
 
/* TODO: Check that the property type is an Objective-C object or a
"POD". */
 
/* Implement -Wproperty-assign-default (which is enabled by default). */
if (warn_property_assign_default
/* If garbage collection is not being used, then 'assign' is
valid for objects (and typically used for delegates) but it
is wrong in most cases (since most objects need to be
retained or copied in setters). Warn users when 'assign' is
used implicitly. */
&& property_assign_semantics == OBJC_PROPERTY_ASSIGN
/* Read-only properties are never assigned, so the assignment
semantics do not matter in that case. */
&& !property_readonly
&& !flag_objc_gc)
{
/* Please note that it would make sense to default to 'assign'
for non-{Objective-C objects}, and to 'retain' for
Objective-C objects. But that would break compatibility with
other compilers. */
if (!parsed_property_assign && !parsed_property_retain && !parsed_property_copy)
{
/* Use 'false' so we do not warn for Class objects. */
if (objc_type_valid_for_messaging (TREE_TYPE (decl), false))
{
warning_at (location,
0,
"object property %qD has no %<assign%>, %<retain%> or %<copy%> attribute; assuming %<assign%>",
decl);
inform (location,
"%<assign%> can be unsafe for Objective-C objects; please state explicitly if you need it");
}
}
}
 
if (property_assign_semantics == OBJC_PROPERTY_RETAIN
&& !objc_type_valid_for_messaging (TREE_TYPE (decl), true))
error_at (location, "%<retain%> attribute is only valid for Objective-C objects");
 
if (property_assign_semantics == OBJC_PROPERTY_COPY
&& !objc_type_valid_for_messaging (TREE_TYPE (decl), true))
error_at (location, "%<copy%> attribute is only valid for Objective-C objects");
 
/* Now determine the final property getter and setter names. They
will be stored in the PROPERTY_DECL, from which they'll always be
extracted and used. */
 
/* Adjust, or fill in, setter and getter names. We overwrite the
parsed_property_setter_ident and parsed_property_getter_ident
with the final setter and getter identifiers that will be
used. */
if (parsed_property_setter_ident)
{
/* The setter should be terminated by ':', but the parser only
gives us an identifier without ':'. So, we need to add ':'
at the end. */
const char *parsed_setter = IDENTIFIER_POINTER (parsed_property_setter_ident);
size_t length = strlen (parsed_setter);
char *final_setter = (char *)alloca (length + 2);
 
sprintf (final_setter, "%s:", parsed_setter);
parsed_property_setter_ident = get_identifier (final_setter);
}
else
{
if (!property_readonly)
parsed_property_setter_ident = get_identifier (objc_build_property_setter_name
(DECL_NAME (decl)));
}
 
if (!parsed_property_getter_ident)
parsed_property_getter_ident = DECL_NAME (decl);
 
/* Check for duplicate property declarations. We first check the
immediate context for a property with the same name. Any such
declarations are an error, unless this is a class extension and
we are extending a property from readonly to readwrite. */
for (x = CLASS_PROPERTY_DECL (objc_interface_context); x; x = TREE_CHAIN (x))
{
if (PROPERTY_NAME (x) == DECL_NAME (decl))
{
if (objc_in_class_extension
&& property_readonly == 0
&& PROPERTY_READONLY (x) == 1)
{
/* This is a class extension, and we are extending an
existing readonly property to a readwrite one.
That's fine. :-) */
property_extension_in_class_extension = true;
break;
}
else
{
location_t original_location = DECL_SOURCE_LOCATION (x);
 
error_at (location, "redeclaration of property %qD", decl);
 
if (original_location != UNKNOWN_LOCATION)
inform (original_location, "originally specified here");
return;
}
}
}
 
/* If x is not NULL_TREE, we must be in a class extension and we're
extending a readonly property. In that case, no point in
searching for another declaration. */
if (x == NULL_TREE)
{
/* We now need to check for existing property declarations (in
the superclass, other categories or protocols) and check that
the new declaration is not in conflict with existing
ones. */
 
/* Search for a previous, existing declaration of a property
with the same name in superclasses, protocols etc. If one is
found, it will be in the 'x' variable. */
 
/* Note that, for simplicity, the following may search again the
local context. That's Ok as nothing will be found (else we'd
have thrown an error above); it's only a little inefficient,
but the code is simpler. */
switch (TREE_CODE (objc_interface_context))
{
case CLASS_INTERFACE_TYPE:
/* Look up the property in the current @interface (which
will find nothing), then its protocols and categories and
superclasses. */
x = lookup_property (objc_interface_context, DECL_NAME (decl));
break;
case CATEGORY_INTERFACE_TYPE:
/* Look up the property in the main @interface, then
protocols and categories (one of them is ours, and will
find nothing) and superclasses. */
x = lookup_property (lookup_interface (CLASS_NAME (objc_interface_context)),
DECL_NAME (decl));
break;
case PROTOCOL_INTERFACE_TYPE:
/* Looks up the property in any protocols attached to the
current protocol. */
if (PROTOCOL_LIST (objc_interface_context))
{
x = lookup_property_in_protocol_list (PROTOCOL_LIST (objc_interface_context),
DECL_NAME (decl));
}
break;
default:
gcc_unreachable ();
}
}
 
if (x != NULL_TREE)
{
/* An existing property was found; check that it has the same
types, or it is compatible. */
location_t original_location = DECL_SOURCE_LOCATION (x);
 
if (PROPERTY_NONATOMIC (x) != parsed_property_nonatomic)
{
warning_at (location, 0,
"'nonatomic' attribute of property %qD conflicts with previous declaration", decl);
 
if (original_location != UNKNOWN_LOCATION)
inform (original_location, "originally specified here");
return;
}
 
if (PROPERTY_GETTER_NAME (x) != parsed_property_getter_ident)
{
warning_at (location, 0,
"'getter' attribute of property %qD conflicts with previous declaration", decl);
 
if (original_location != UNKNOWN_LOCATION)
inform (original_location, "originally specified here");
return;
}
 
/* We can only compare the setter names if both the old and new property have a setter. */
if (!property_readonly && !PROPERTY_READONLY(x))
{
if (PROPERTY_SETTER_NAME (x) != parsed_property_setter_ident)
{
warning_at (location, 0,
"'setter' attribute of property %qD conflicts with previous declaration", decl);
 
if (original_location != UNKNOWN_LOCATION)
inform (original_location, "originally specified here");
return;
}
}
 
if (PROPERTY_ASSIGN_SEMANTICS (x) != property_assign_semantics)
{
warning_at (location, 0,
"assign semantics attributes of property %qD conflict with previous declaration", decl);
 
if (original_location != UNKNOWN_LOCATION)
inform (original_location, "originally specified here");
return;
}
 
/* It's ok to have a readonly property that becomes a readwrite, but not vice versa. */
if (PROPERTY_READONLY (x) == 0 && property_readonly == 1)
{
warning_at (location, 0,
"'readonly' attribute of property %qD conflicts with previous declaration", decl);
 
if (original_location != UNKNOWN_LOCATION)
inform (original_location, "originally specified here");
return;
}
 
/* We now check that the new and old property declarations have
the same types (or compatible one). In the Objective-C
tradition of loose type checking, we do type-checking but
only generate warnings (not errors) if they do not match.
For non-readonly properties, the types must match exactly;
for readonly properties, it is allowed to use a "more
specialized" type in the new property declaration. Eg, the
superclass has a getter returning (NSArray *) and the
subclass a getter returning (NSMutableArray *). The object's
getter returns an (NSMutableArray *); but if you cast the
object to the superclass, which is allowed, you'd still
expect the getter to return an (NSArray *), which works since
an (NSMutableArray *) is an (NSArray *) too. So, the set of
objects belonging to the type of the new @property should be
a subset of the set of objects belonging to the type of the
old @property. This is what "specialization" means. And the
reason it only applies to readonly properties is that for a
readwrite property the setter would have the opposite
requirement - ie that the superclass type is more specialized
then the subclass one; hence the only way to satisfy both
constraints is that the types match. */
 
/* If the types are not the same in the C sense, we warn ... */
if (!comptypes (TREE_TYPE (x), TREE_TYPE (decl))
/* ... unless the property is readonly, in which case we
allow a new, more specialized, declaration. */
&& (!property_readonly
|| !objc_compare_types (TREE_TYPE (x),
TREE_TYPE (decl), -5, NULL_TREE)))
{
warning_at (location, 0,
"type of property %qD conflicts with previous declaration", decl);
if (original_location != UNKNOWN_LOCATION)
inform (original_location, "originally specified here");
return;
}
 
/* If we are in a class extension and we're extending a readonly
property in the main @interface, we'll just update the
existing property with the readwrite flag and potentially the
new setter name. */
if (property_extension_in_class_extension)
{
PROPERTY_READONLY (x) = 0;
PROPERTY_SETTER_NAME (x) = parsed_property_setter_ident;
return;
}
}
 
/* Create a PROPERTY_DECL node. */
property_decl = make_node (PROPERTY_DECL);
 
/* Copy the basic information from the original decl. */
TREE_TYPE (property_decl) = TREE_TYPE (decl);
DECL_SOURCE_LOCATION (property_decl) = DECL_SOURCE_LOCATION (decl);
TREE_DEPRECATED (property_decl) = TREE_DEPRECATED (decl);
 
/* Add property-specific information. */
PROPERTY_NAME (property_decl) = DECL_NAME (decl);
PROPERTY_GETTER_NAME (property_decl) = parsed_property_getter_ident;
PROPERTY_SETTER_NAME (property_decl) = parsed_property_setter_ident;
PROPERTY_READONLY (property_decl) = property_readonly;
PROPERTY_NONATOMIC (property_decl) = parsed_property_nonatomic;
PROPERTY_ASSIGN_SEMANTICS (property_decl) = property_assign_semantics;
PROPERTY_IVAR_NAME (property_decl) = NULL_TREE;
PROPERTY_DYNAMIC (property_decl) = 0;
 
/* Remember the fact that the property was found in the @optional
section in a @protocol, or not. */
if (objc_method_optional_flag)
PROPERTY_OPTIONAL (property_decl) = 1;
else
PROPERTY_OPTIONAL (property_decl) = 0;
 
/* Note that PROPERTY_GETTER_NAME is always set for all
PROPERTY_DECLs, and PROPERTY_SETTER_NAME is always set for all
PROPERTY_DECLs where PROPERTY_READONLY == 0. Any time we deal
with a getter or setter, we should get the PROPERTY_DECL and use
PROPERTY_GETTER_NAME and PROPERTY_SETTER_NAME to know the correct
names. */
 
/* Add the PROPERTY_DECL to the list of properties for the class. */
TREE_CHAIN (property_decl) = CLASS_PROPERTY_DECL (objc_interface_context);
CLASS_PROPERTY_DECL (objc_interface_context) = property_decl;
}
 
/* This is a subroutine of objc_maybe_build_component_ref. Search the
list of methods in the interface (and, failing that, the local list
in the implementation, and failing that, the protocol list)
provided for a 'setter' or 'getter' for 'component' with default
names (ie, if 'component' is "name", then search for "name" and
"setName:"). It is also possible to specify a different
'getter_name' (this is used for @optional readonly properties). If
any is found, then create an artificial property that uses them.
Return NULL_TREE if 'getter' or 'setter' could not be found. */
static tree
maybe_make_artificial_property_decl (tree interface, tree implementation,
tree protocol_list, tree component, bool is_class,
tree getter_name)
{
tree setter_name = get_identifier (objc_build_property_setter_name (component));
tree getter = NULL_TREE;
tree setter = NULL_TREE;
 
if (getter_name == NULL_TREE)
getter_name = component;
 
/* First, check the @interface and all superclasses. */
if (interface)
{
int flags = 0;
 
/* Using instance methods of the root class as accessors is most
likely unwanted and can be extremely confusing (and, most
importantly, other Objective-C 2.0 compilers do not do it).
Turn it off. */
if (is_class)
flags = OBJC_LOOKUP_CLASS | OBJC_LOOKUP_NO_INSTANCE_METHODS_OF_ROOT_CLASS;
 
getter = lookup_method_static (interface, getter_name, flags);
setter = lookup_method_static (interface, setter_name, flags);
}
 
/* Second, check the local @implementation context. */
if (!getter && !setter)
{
if (implementation)
{
if (is_class)
{
getter = lookup_method (CLASS_CLS_METHODS (implementation), getter_name);
setter = lookup_method (CLASS_CLS_METHODS (implementation), setter_name);
}
else
{
getter = lookup_method (CLASS_NST_METHODS (implementation), getter_name);
setter = lookup_method (CLASS_NST_METHODS (implementation), setter_name);
}
}
}
 
/* Try the protocol_list if we didn't find anything in the
@interface and in the @implementation. */
if (!getter && !setter)
{
getter = lookup_method_in_protocol_list (protocol_list, getter_name, is_class);
setter = lookup_method_in_protocol_list (protocol_list, setter_name, is_class);
}
 
/* There needs to be at least a getter or setter for this to be a
valid 'object.component' syntax. */
if (getter || setter)
{
/* Yes ... determine the type of the expression. */
tree property_decl;
tree type;
 
if (getter)
type = TREE_VALUE (TREE_TYPE (getter));
else
type = TREE_VALUE (TREE_TYPE (METHOD_SEL_ARGS (setter)));
 
/* Create an artificial property declaration with the
information we collected on the type and getter/setter
names. */
property_decl = make_node (PROPERTY_DECL);
 
TREE_TYPE (property_decl) = type;
DECL_SOURCE_LOCATION (property_decl) = input_location;
TREE_DEPRECATED (property_decl) = 0;
DECL_ARTIFICIAL (property_decl) = 1;
 
/* Add property-specific information. Note that one of
PROPERTY_GETTER_NAME or PROPERTY_SETTER_NAME may refer to a
non-existing method; this will generate an error when the
expression is later compiled. At this stage we don't know if
the getter or setter will be used, so we can't generate an
error. */
PROPERTY_NAME (property_decl) = component;
PROPERTY_GETTER_NAME (property_decl) = getter_name;
PROPERTY_SETTER_NAME (property_decl) = setter_name;
PROPERTY_READONLY (property_decl) = 0;
PROPERTY_NONATOMIC (property_decl) = 0;
PROPERTY_ASSIGN_SEMANTICS (property_decl) = 0;
PROPERTY_IVAR_NAME (property_decl) = NULL_TREE;
PROPERTY_DYNAMIC (property_decl) = 0;
PROPERTY_OPTIONAL (property_decl) = 0;
 
if (!getter)
PROPERTY_HAS_NO_GETTER (property_decl) = 1;
 
/* The following is currently unused, but it's nice to have
there. We may use it if we need in the future. */
if (!setter)
PROPERTY_HAS_NO_SETTER (property_decl) = 1;
 
return property_decl;
}
 
return NULL_TREE;
}
 
/* This hook routine is invoked by the parser when an expression such
as 'xxx.yyy' is parsed. We get a chance to process these
expressions in a way that is specified to Objective-C (to implement
the Objective-C 2.0 dot-syntax, properties, or non-fragile ivars).
If the expression is not an Objective-C specified expression, we
should return NULL_TREE; else we return the expression.
 
At the moment this only implements dot-syntax and properties (not
non-fragile ivars yet), ie 'object.property' or 'object.component'
where 'component' is not a declared property, but a valid getter or
setter for it could be found. */
tree
objc_maybe_build_component_ref (tree object, tree property_ident)
{
tree x = NULL_TREE;
tree rtype;
 
/* If we are in Objective-C 1.0 mode, dot-syntax and properties are
not available. */
if (flag_objc1_only)
return NULL_TREE;
 
/* Try to determine if 'object' is an Objective-C object or not. If
not, return. */
if (object == NULL_TREE || object == error_mark_node
|| (rtype = TREE_TYPE (object)) == NULL_TREE)
return NULL_TREE;
 
if (property_ident == NULL_TREE || property_ident == error_mark_node
|| TREE_CODE (property_ident) != IDENTIFIER_NODE)
return NULL_TREE;
 
/* The following analysis of 'object' is similar to the one used for
the 'receiver' of a method invocation. We need to determine what
'object' is and find the appropriate property (either declared,
or artificial) for it (in the same way as we need to find the
appropriate method prototype for a method invocation). There are
some simplifications here though: "object.property" is invalid if
"object" has a type of "id" or "Class"; it must at least have a
protocol attached to it, and "object" is never a class name as
that is done by objc_build_class_component_ref. Finally, we
don't know if this really is a dot-syntax expression, so we want
to make a quick exit if it is not; for this reason, we try to
postpone checks after determining that 'object' looks like an
Objective-C object. */
 
if (objc_is_id (rtype))
{
/* This is the case that the 'object' is of type 'id' or
'Class'. */
 
/* Check if at least it is of type 'id <Protocol>' or 'Class
<Protocol>'; if so, look the property up in the
protocols. */
if (TYPE_HAS_OBJC_INFO (TREE_TYPE (rtype)))
{
tree rprotos = TYPE_OBJC_PROTOCOL_LIST (TREE_TYPE (rtype));
 
if (rprotos)
{
/* No point looking up declared @properties if we are
dealing with a class. Classes have no declared
properties. */
if (!IS_CLASS (rtype))
x = lookup_property_in_protocol_list (rprotos, property_ident);
 
if (x == NULL_TREE)
{
/* Ok, no property. Maybe it was an
object.component dot-syntax without a declared
property (this is valid for classes too). Look
for getter/setter methods and internally declare
an artifical property based on them if found. */
x = maybe_make_artificial_property_decl (NULL_TREE,
NULL_TREE,
rprotos,
property_ident,
IS_CLASS (rtype),
NULL_TREE);
}
else if (PROPERTY_OPTIONAL (x) && PROPERTY_READONLY (x))
{
/* This is a special, complicated case. If the
property is optional, and is read-only, then the
property is always used for reading, but an
eventual existing non-property setter can be used
for writing. We create an artificial property
decl copying the getter from the optional
property, and looking up the setter in the
interface. */
x = maybe_make_artificial_property_decl (NULL_TREE,
NULL_TREE,
rprotos,
property_ident,
false,
PROPERTY_GETTER_NAME (x));
}
}
}
else if (objc_method_context)
{
/* Else, if we are inside a method it could be the case of
'super' or 'self'. */
tree interface_type = NULL_TREE;
tree t = object;
while (TREE_CODE (t) == COMPOUND_EXPR
|| TREE_CODE (t) == MODIFY_EXPR
|| CONVERT_EXPR_P (t)
|| TREE_CODE (t) == COMPONENT_REF)
t = TREE_OPERAND (t, 0);
 
if (t == UOBJC_SUPER_decl)
interface_type = lookup_interface (CLASS_SUPER_NAME (implementation_template));
else if (t == self_decl)
interface_type = lookup_interface (CLASS_NAME (implementation_template));
 
if (interface_type)
{
if (TREE_CODE (objc_method_context) != CLASS_METHOD_DECL)
x = lookup_property (interface_type, property_ident);
 
if (x == NULL_TREE)
{
/* Try the dot-syntax without a declared property.
If this is an access to 'self', it is possible
that they may refer to a setter/getter that is
not declared in the interface, but exists locally
in the implementation. In that case, get the
implementation context and use it. */
tree implementation = NULL_TREE;
 
if (t == self_decl)
implementation = objc_implementation_context;
 
x = maybe_make_artificial_property_decl
(interface_type, implementation, NULL_TREE,
property_ident,
(TREE_CODE (objc_method_context) == CLASS_METHOD_DECL),
NULL_TREE);
}
else if (PROPERTY_OPTIONAL (x) && PROPERTY_READONLY (x))
{
tree implementation = NULL_TREE;
 
if (t == self_decl)
implementation = objc_implementation_context;
 
x = maybe_make_artificial_property_decl (interface_type,
implementation,
NULL_TREE,
property_ident,
false,
PROPERTY_GETTER_NAME (x));
}
}
}
}
else
{
/* This is the case where we have more information on 'rtype'. */
tree basetype = TYPE_MAIN_VARIANT (rtype);
 
/* Skip the pointer - if none, it's not an Objective-C object or
class. */
if (basetype != NULL_TREE && TREE_CODE (basetype) == POINTER_TYPE)
basetype = TREE_TYPE (basetype);
else
return NULL_TREE;
 
/* Traverse typedefs. */
while (basetype != NULL_TREE
&& TREE_CODE (basetype) == RECORD_TYPE
&& OBJC_TYPE_NAME (basetype)
&& TREE_CODE (OBJC_TYPE_NAME (basetype)) == TYPE_DECL
&& DECL_ORIGINAL_TYPE (OBJC_TYPE_NAME (basetype)))
basetype = DECL_ORIGINAL_TYPE (OBJC_TYPE_NAME (basetype));
 
if (basetype != NULL_TREE && TYPED_OBJECT (basetype))
{
tree interface_type = TYPE_OBJC_INTERFACE (basetype);
tree protocol_list = TYPE_OBJC_PROTOCOL_LIST (basetype);
 
if (interface_type
&& (TREE_CODE (interface_type) == CLASS_INTERFACE_TYPE
|| TREE_CODE (interface_type) == CATEGORY_INTERFACE_TYPE
|| TREE_CODE (interface_type) == PROTOCOL_INTERFACE_TYPE))
{
/* Not sure 'rtype' could ever be a class here! Just
for safety we keep the checks. */
if (!IS_CLASS (rtype))
{
x = lookup_property (interface_type, property_ident);
 
if (x == NULL_TREE)
x = lookup_property_in_protocol_list (protocol_list,
property_ident);
}
 
if (x == NULL_TREE)
{
/* Try the dot-syntax without a declared property.
If we are inside a method implementation, it is
possible that they may refer to a setter/getter
that is not declared in the interface, but exists
locally in the implementation. In that case, get
the implementation context and use it. */
tree implementation = NULL_TREE;
 
if (objc_implementation_context
&& CLASS_NAME (objc_implementation_context)
== OBJC_TYPE_NAME (interface_type))
implementation = objc_implementation_context;
 
x = maybe_make_artificial_property_decl (interface_type,
implementation,
protocol_list,
property_ident,
IS_CLASS (rtype),
NULL_TREE);
}
else if (PROPERTY_OPTIONAL (x) && PROPERTY_READONLY (x))
{
tree implementation = NULL_TREE;
 
if (objc_implementation_context
&& CLASS_NAME (objc_implementation_context)
== OBJC_TYPE_NAME (interface_type))
implementation = objc_implementation_context;
 
x = maybe_make_artificial_property_decl (interface_type,
implementation,
protocol_list,
property_ident,
false,
PROPERTY_GETTER_NAME (x));
}
}
}
}
 
if (x)
{
tree expression;
tree getter_call;
tree deprecated_method_prototype = NULL_TREE;
 
/* We have an additional nasty problem here; if this
PROPERTY_REF needs to become a 'getter', then the conversion
from PROPERTY_REF into a getter call happens in gimplify,
after the selector table has already been generated and when
it is too late to add another selector to it. To work around
the problem, we always create the getter call at this stage,
which puts the selector in the table. Note that if the
PROPERTY_REF becomes a 'setter' instead of a 'getter', then
we have added a selector too many to the selector table.
This is a little inefficient.
 
Also note that method calls to 'self' and 'super' require the
context (self_decl, UOBJS_SUPER_decl,
objc_implementation_context etc) to be built correctly; this
is yet another reason why building the call at the gimplify
stage (when this context has been lost) is not very
practical. If we build it at this stage, we know it will
always be built correctly.
 
If the PROPERTY_HAS_NO_GETTER() (ie, it is an artificial
property decl created to deal with a dotsyntax not really
referring to an existing property) then do not try to build a
call to the getter as there is no getter. */
if (PROPERTY_HAS_NO_GETTER (x))
getter_call = NULL_TREE;
else
getter_call = objc_finish_message_expr
(object, PROPERTY_GETTER_NAME (x), NULL_TREE,
/* Disable the immediate deprecation warning if the getter
is deprecated, but record the fact that the getter is
deprecated by setting PROPERTY_REF_DEPRECATED_GETTER to
the method prototype. */
&deprecated_method_prototype);
 
expression = build4 (PROPERTY_REF, TREE_TYPE(x), object, x, getter_call,
deprecated_method_prototype);
SET_EXPR_LOCATION (expression, input_location);
TREE_SIDE_EFFECTS (expression) = 1;
 
return expression;
}
 
return NULL_TREE;
}
 
/* This hook routine is invoked by the parser when an expression such
as 'xxx.yyy' is parsed, and 'xxx' is a class name. This is the
Objective-C 2.0 dot-syntax applied to classes, so we need to
convert it into a setter/getter call on the class. */
tree
objc_build_class_component_ref (tree class_name, tree property_ident)
{
tree x = NULL_TREE;
tree object, rtype;
 
if (flag_objc1_only)
error_at (input_location, "the dot syntax is not available in Objective-C 1.0");
 
if (class_name == NULL_TREE || class_name == error_mark_node
|| TREE_CODE (class_name) != IDENTIFIER_NODE)
return error_mark_node;
 
if (property_ident == NULL_TREE || property_ident == error_mark_node
|| TREE_CODE (property_ident) != IDENTIFIER_NODE)
return NULL_TREE;
 
object = objc_get_class_reference (class_name);
if (!object)
{
/* We know that 'class_name' is an Objective-C class name as the
parser won't call this function if it is not. This is only a
double-check for safety. */
error_at (input_location, "could not find class %qE", class_name);
return error_mark_node;
}
 
rtype = lookup_interface (class_name);
if (!rtype)
{
/* Again, this should never happen, but we do check. */
error_at (input_location, "could not find interface for class %qE", class_name);
return error_mark_node;
}
else
{
if (TREE_DEPRECATED (rtype))
warning (OPT_Wdeprecated_declarations, "class %qE is deprecated", class_name);
}
 
x = maybe_make_artificial_property_decl (rtype, NULL_TREE, NULL_TREE,
property_ident,
true, NULL_TREE);
 
if (x)
{
tree expression;
tree getter_call;
tree deprecated_method_prototype = NULL_TREE;
 
if (PROPERTY_HAS_NO_GETTER (x))
getter_call = NULL_TREE;
else
getter_call = objc_finish_message_expr
(object, PROPERTY_GETTER_NAME (x), NULL_TREE,
&deprecated_method_prototype);
 
expression = build4 (PROPERTY_REF, TREE_TYPE(x), object, x, getter_call,
deprecated_method_prototype);
SET_EXPR_LOCATION (expression, input_location);
TREE_SIDE_EFFECTS (expression) = 1;
 
return expression;
}
else
{
error_at (input_location, "could not find setter/getter for %qE in class %qE",
property_ident, class_name);
return error_mark_node;
}
 
return NULL_TREE;
}
 
 
 
/* This is used because we don't want to expose PROPERTY_REF to the
C/C++ frontends. Maybe we should! */
bool
objc_is_property_ref (tree node)
{
if (node && TREE_CODE (node) == PROPERTY_REF)
return true;
else
return false;
}
 
/* This function builds a setter call for a PROPERTY_REF (real, for a
declared property, or artificial, for a dot-syntax accessor which
is not corresponding to a property). 'lhs' must be a PROPERTY_REF
(the caller must check this beforehand). 'rhs' is the value to
assign to the property. A plain setter call is returned, or
error_mark_node if the property is readonly. */
 
static tree
objc_build_setter_call (tree lhs, tree rhs)
{
tree object_expr = PROPERTY_REF_OBJECT (lhs);
tree property_decl = PROPERTY_REF_PROPERTY_DECL (lhs);
 
if (PROPERTY_READONLY (property_decl))
{
error ("readonly property can not be set");
return error_mark_node;
}
else
{
tree setter_argument = build_tree_list (NULL_TREE, rhs);
tree setter;
 
/* TODO: Check that the setter return type is 'void'. */
 
/* TODO: Decay arguments in C. */
setter = objc_finish_message_expr (object_expr,
PROPERTY_SETTER_NAME (property_decl),
setter_argument, NULL);
return setter;
}
 
/* Unreachable, but the compiler may not realize. */
return error_mark_node;
}
 
/* This hook routine is called when a MODIFY_EXPR is being built. We
check what is being modified; if it is a PROPERTY_REF, we need to
generate a 'setter' function call for the property. If this is not
a PROPERTY_REF, we return NULL_TREE and the C/C++ frontend will go
on creating their MODIFY_EXPR.
 
This is used for example if you write
 
object.count = 1;
 
where 'count' is a property. The left-hand side creates a
PROPERTY_REF, and then the compiler tries to generate a MODIFY_EXPR
to assign something to it. We intercept that here, and generate a
call to the 'setter' method instead. */
tree
objc_maybe_build_modify_expr (tree lhs, tree rhs)
{
if (lhs && TREE_CODE (lhs) == PROPERTY_REF)
{
/* Building a simple call to the setter method would work for cases such as
 
object.count = 1;
 
but wouldn't work for cases such as
 
count = object2.count = 1;
 
to get these to work with very little effort, we build a
compound statement which does the setter call (to set the
property to 'rhs'), but which can also be evaluated returning
the 'rhs'. If the 'rhs' has no side effects, we can simply
evaluate it twice, building
 
([object setProperty: rhs]; rhs)
 
If it has side effects, we put it in a temporary variable first,
so we create the following:
 
(temp = rhs; [object setProperty: temp]; temp)
 
setter_argument is rhs in the first case, and temp in the second
case.
*/
tree setter_argument;
 
/* s1, s2 and s3 are the tree statements that we need in the
compound expression. */
tree s1, s2, s3, compound_expr;
 
if (TREE_SIDE_EFFECTS (rhs))
{
tree bind;
 
/* Declare __objc_property_temp in a local bind. */
setter_argument = objc_create_temporary_var (TREE_TYPE (rhs), "__objc_property_temp");
DECL_SOURCE_LOCATION (setter_argument) = input_location;
bind = build3 (BIND_EXPR, void_type_node, setter_argument, NULL, NULL);
SET_EXPR_LOCATION (bind, input_location);
TREE_SIDE_EFFECTS (bind) = 1;
add_stmt (bind);
 
/* s1: x = rhs */
s1 = build_modify_expr (input_location, setter_argument, NULL_TREE,
NOP_EXPR,
input_location, rhs, NULL_TREE);
SET_EXPR_LOCATION (s1, input_location);
}
else
{
/* No s1. */
setter_argument = rhs;
s1 = NULL_TREE;
}
 
/* Now build the compound statement. */
 
/* s2: [object setProperty: x] */
s2 = objc_build_setter_call (lhs, setter_argument);
 
/* This happens if building the setter failed because the
property is readonly. */
if (s2 == error_mark_node)
return error_mark_node;
 
SET_EXPR_LOCATION (s2, input_location);
 
/* s3: x */
s3 = convert (TREE_TYPE (lhs), setter_argument);
 
/* Now build the compound statement (s1, s2, s3) or (s2, s3) as
appropriate. */
if (s1)
compound_expr = build_compound_expr (input_location, build_compound_expr (input_location, s1, s2), s3);
else
compound_expr = build_compound_expr (input_location, s2, s3);
 
/* Without this, with -Wall you get a 'valued computed is not
used' every time there is a "object.property = x" where the
value of the resulting MODIFY_EXPR is not used. That is
correct (maybe a more sophisticated implementation could
avoid generating the compound expression if not needed), but
we need to turn it off. */
TREE_NO_WARNING (compound_expr) = 1;
return compound_expr;
}
else
return NULL_TREE;
}
 
/* This hook is called by the frontend when one of the four unary
expressions PREINCREMENT_EXPR, POSTINCREMENT_EXPR,
PREDECREMENT_EXPR and POSTDECREMENT_EXPR is being built with an
argument which is a PROPERTY_REF. For example, this happens if you have
 
object.count++;
 
where 'count' is a property. We need to use the 'getter' and
'setter' for the property in an appropriate way to build the
appropriate expression. 'code' is the code for the expression (one
of the four mentioned above); 'argument' is the PROPERTY_REF, and
'increment' is how much we need to add or subtract. */
tree
objc_build_incr_expr_for_property_ref (location_t location,
enum tree_code code,
tree argument, tree increment)
{
/* Here are the expressions that we want to build:
 
For PREINCREMENT_EXPR / PREDECREMENT_EXPR:
(temp = [object property] +/- increment, [object setProperty: temp], temp)
 
For POSTINCREMENT_EXPR / POSTECREMENT_EXPR:
(temp = [object property], [object setProperty: temp +/- increment], temp) */
 
tree temp_variable_decl, bind;
/* s1, s2 and s3 are the tree statements that we need in the
compound expression. */
tree s1, s2, s3, compound_expr;
 
/* Safety check. */
if (!argument || TREE_CODE (argument) != PROPERTY_REF)
return error_mark_node;
 
/* Declare __objc_property_temp in a local bind. */
temp_variable_decl = objc_create_temporary_var (TREE_TYPE (argument), "__objc_property_temp");
DECL_SOURCE_LOCATION (temp_variable_decl) = location;
bind = build3 (BIND_EXPR, void_type_node, temp_variable_decl, NULL, NULL);
SET_EXPR_LOCATION (bind, location);
TREE_SIDE_EFFECTS (bind) = 1;
add_stmt (bind);
 
/* Now build the compound statement. */
 
/* Note that the 'getter' is generated at gimplify time; at this
time, we can simply put the property_ref (ie, argument) wherever
we want the getter ultimately to be. */
 
/* s1: __objc_property_temp = [object property] <+/- increment> */
switch (code)
{
case PREINCREMENT_EXPR:
/* __objc_property_temp = [object property] + increment */
s1 = build_modify_expr (location, temp_variable_decl, NULL_TREE,
NOP_EXPR,
location, build2 (PLUS_EXPR, TREE_TYPE (argument),
argument, increment), NULL_TREE);
break;
case PREDECREMENT_EXPR:
/* __objc_property_temp = [object property] - increment */
s1 = build_modify_expr (location, temp_variable_decl, NULL_TREE,
NOP_EXPR,
location, build2 (MINUS_EXPR, TREE_TYPE (argument),
argument, increment), NULL_TREE);
break;
case POSTINCREMENT_EXPR:
case POSTDECREMENT_EXPR:
/* __objc_property_temp = [object property] */
s1 = build_modify_expr (location, temp_variable_decl, NULL_TREE,
NOP_EXPR,
location, argument, NULL_TREE);
break;
default:
gcc_unreachable ();
}
 
/* s2: [object setProperty: __objc_property_temp <+/- increment>] */
switch (code)
{
case PREINCREMENT_EXPR:
case PREDECREMENT_EXPR:
/* [object setProperty: __objc_property_temp] */
s2 = objc_build_setter_call (argument, temp_variable_decl);
break;
case POSTINCREMENT_EXPR:
/* [object setProperty: __objc_property_temp + increment] */
s2 = objc_build_setter_call (argument,
build2 (PLUS_EXPR, TREE_TYPE (argument),
temp_variable_decl, increment));
break;
case POSTDECREMENT_EXPR:
/* [object setProperty: __objc_property_temp - increment] */
s2 = objc_build_setter_call (argument,
build2 (MINUS_EXPR, TREE_TYPE (argument),
temp_variable_decl, increment));
break;
default:
gcc_unreachable ();
}
 
/* This happens if building the setter failed because the property
is readonly. */
if (s2 == error_mark_node)
return error_mark_node;
 
SET_EXPR_LOCATION (s2, location);
 
/* s3: __objc_property_temp */
s3 = convert (TREE_TYPE (argument), temp_variable_decl);
 
/* Now build the compound statement (s1, s2, s3) */
compound_expr = build_compound_expr (location, build_compound_expr (location, s1, s2), s3);
 
/* Prevent C++ from warning with -Wall that "right operand of comma
operator has no effect". */
TREE_NO_WARNING (compound_expr) = 1;
return compound_expr;
}
 
tree
objc_build_method_signature (bool is_class_method, tree rettype, tree selector,
tree optparms, bool ellipsis)
{
if (is_class_method)
return build_method_decl (CLASS_METHOD_DECL, rettype, selector,
optparms, ellipsis);
else
return build_method_decl (INSTANCE_METHOD_DECL, rettype, selector,
optparms, ellipsis);
}
 
void
objc_add_method_declaration (bool is_class_method, tree decl, tree attributes)
{
if (!objc_interface_context)
{
/* PS: At the moment, due to how the parser works, it should be
impossible to get here. But it's good to have the check in
case the parser changes.
*/
fatal_error ("method declaration not in @interface context");
}
 
if (flag_objc1_only && attributes)
error_at (input_location, "method attributes are not available in Objective-C 1.0");
 
objc_decl_method_attributes (&decl, attributes, 0);
objc_add_method (objc_interface_context,
decl,
is_class_method,
objc_method_optional_flag);
}
 
/* Return 'true' if the method definition could be started, and
'false' if not (because we are outside an @implementation context).
EXPR is NULL or an expression that needs to be evaluated for the
side effects of array size expressions in the parameters.
*/
bool
objc_start_method_definition (bool is_class_method, tree decl, tree attributes,
tree expr)
{
if (!objc_implementation_context)
{
error ("method definition not in @implementation context");
return false;
}
 
if (decl != NULL_TREE && METHOD_SEL_NAME (decl) == error_mark_node)
return false;
 
#ifndef OBJCPLUS
/* Indicate no valid break/continue context by setting these variables
to some non-null, non-label value. We'll notice and emit the proper
error message in c_finish_bc_stmt. */
c_break_label = c_cont_label = size_zero_node;
#endif
 
if (attributes)
warning_at (input_location, 0, "method attributes can not be specified in @implementation context");
else
objc_decl_method_attributes (&decl, attributes, 0);
 
objc_add_method (objc_implementation_context,
decl,
is_class_method,
/* is optional */ false);
start_method_def (decl, expr);
return true;
}
 
void
objc_add_instance_variable (tree decl)
{
(void) add_instance_variable (objc_ivar_context,
objc_ivar_visibility,
decl);
}
 
/* Construct a C struct with same name as KLASS, a base struct with tag
SUPER_NAME (if any), and FIELDS indicated. */
 
static tree
objc_build_struct (tree klass, tree fields, tree super_name)
{
tree name = CLASS_NAME (klass);
tree s = objc_start_struct (name);
tree super = (super_name ? xref_tag (RECORD_TYPE, super_name) : NULL_TREE);
tree t;
VEC(tree,heap) *objc_info = NULL;
int i;
 
if (super)
{
/* Prepend a packed variant of the base class into the layout. This
is necessary to preserve ObjC ABI compatibility. */
tree base = build_decl (input_location,
FIELD_DECL, NULL_TREE, super);
tree field = TYPE_FIELDS (super);
 
while (field && DECL_CHAIN (field)
&& TREE_CODE (DECL_CHAIN (field)) == FIELD_DECL)
field = DECL_CHAIN (field);
 
/* For ObjC ABI purposes, the "packed" size of a base class is
the sum of the offset and the size (in bits) of the last field
in the class. */
DECL_SIZE (base)
= (field && TREE_CODE (field) == FIELD_DECL
? size_binop (PLUS_EXPR,
size_binop (PLUS_EXPR,
size_binop
(MULT_EXPR,
convert (bitsizetype,
DECL_FIELD_OFFSET (field)),
bitsize_int (BITS_PER_UNIT)),
DECL_FIELD_BIT_OFFSET (field)),
DECL_SIZE (field))
: bitsize_zero_node);
DECL_SIZE_UNIT (base)
= size_binop (FLOOR_DIV_EXPR, convert (sizetype, DECL_SIZE (base)),
size_int (BITS_PER_UNIT));
DECL_ARTIFICIAL (base) = 1;
DECL_ALIGN (base) = 1;
DECL_FIELD_CONTEXT (base) = s;
#ifdef OBJCPLUS
DECL_FIELD_IS_BASE (base) = 1;
 
if (fields)
TREE_NO_WARNING (fields) = 1; /* Suppress C++ ABI warnings -- we */
#endif /* are following the ObjC ABI here. */
DECL_CHAIN (base) = fields;
fields = base;
}
 
/* NB: Calling finish_struct() may cause type TYPE_OBJC_INFO
information in all variants of this RECORD_TYPE to be destroyed
(this is because the C frontend manipulates TYPE_LANG_SPECIFIC
for something else and then will change all variants to use the
same resulting TYPE_LANG_SPECIFIC, ignoring the fact that we use
it for ObjC protocols and that such propagation will make all
variants use the same objc_info), but it is therein that we store
protocol conformance info (e.g., 'NSObject <MyProtocol>').
Hence, we must save the ObjC-specific information before calling
finish_struct(), and then reinstate it afterwards. */
 
for (t = TYPE_MAIN_VARIANT (s); t; t = TYPE_NEXT_VARIANT (t))
{
INIT_TYPE_OBJC_INFO (t);
VEC_safe_push (tree, heap, objc_info, TYPE_OBJC_INFO (t));
}
 
s = objc_finish_struct (s, fields);
 
for (i = 0, t = TYPE_MAIN_VARIANT (s); t; t = TYPE_NEXT_VARIANT (t), i++)
{
/* We now want to restore the different TYPE_OBJC_INFO, but we
have the additional problem that the C frontend doesn't just
copy TYPE_LANG_SPECIFIC from one variant to the other; it
actually makes all of them the *same* TYPE_LANG_SPECIFIC. As
we need a different TYPE_OBJC_INFO for each (and
TYPE_OBJC_INFO is a field in TYPE_LANG_SPECIFIC), we need to
make a copy of each TYPE_LANG_SPECIFIC before we modify
TYPE_OBJC_INFO. */
if (TYPE_LANG_SPECIFIC (t))
{
/* Create a copy of TYPE_LANG_SPECIFIC. */
struct lang_type *old_lang_type = TYPE_LANG_SPECIFIC (t);
ALLOC_OBJC_TYPE_LANG_SPECIFIC (t);
memcpy (TYPE_LANG_SPECIFIC (t), old_lang_type,
SIZEOF_OBJC_TYPE_LANG_SPECIFIC);
}
else
{
/* Just create a new one. */
ALLOC_OBJC_TYPE_LANG_SPECIFIC (t);
}
/* Replace TYPE_OBJC_INFO with the saved one. This restores any
protocol information that may have been associated with the
type. */
TYPE_OBJC_INFO (t) = VEC_index (tree, objc_info, i);
/* Replace the IDENTIFIER_NODE with an actual @interface now
that we have it. */
TYPE_OBJC_INTERFACE (t) = klass;
}
VEC_free (tree, heap, objc_info);
 
/* Use TYPE_BINFO structures to point at the super class, if any. */
objc_xref_basetypes (s, super);
 
/* Mark this struct as a class template. */
CLASS_STATIC_TEMPLATE (klass) = s;
 
return s;
}
 
/* Mark DECL as being 'volatile' for purposes of Darwin
_setjmp()/_longjmp() exception handling. Called from
objc_mark_locals_volatile(). */
void
objc_volatilize_decl (tree decl)
{
/* Do not mess with variables that are 'static' or (already)
'volatile'. */
if (!TREE_THIS_VOLATILE (decl) && !TREE_STATIC (decl)
&& (TREE_CODE (decl) == VAR_DECL
|| TREE_CODE (decl) == PARM_DECL))
{
if (local_variables_to_volatilize == NULL)
local_variables_to_volatilize = VEC_alloc (tree, gc, 8);
 
VEC_safe_push (tree, gc, local_variables_to_volatilize, decl);
}
}
 
/* Called when parsing of a function completes; if any local variables
in the function were marked as variables to volatilize, change them
to volatile. We do this at the end of the function when the
warnings about discarding 'volatile' have already been produced.
We are making the variables as volatile just to force the compiler
to preserve them between setjmp/longjmp, but we don't want warnings
for them as they aren't really volatile. */
void
objc_finish_function (void)
{
/* If there are any local variables to volatilize, volatilize them. */
if (local_variables_to_volatilize)
{
int i;
tree decl;
FOR_EACH_VEC_ELT (tree, local_variables_to_volatilize, i, decl)
{
tree t = TREE_TYPE (decl);
 
t = build_qualified_type (t, TYPE_QUALS (t) | TYPE_QUAL_VOLATILE);
TREE_TYPE (decl) = t;
TREE_THIS_VOLATILE (decl) = 1;
TREE_SIDE_EFFECTS (decl) = 1;
DECL_REGISTER (decl) = 0;
#ifndef OBJCPLUS
C_DECL_REGISTER (decl) = 0;
#endif
}
 
/* Now we delete the vector. This sets it to NULL as well. */
VEC_free (tree, gc, local_variables_to_volatilize);
}
}
 
/* Check if protocol PROTO is adopted (directly or indirectly) by class CLS
(including its categories and superclasses) or by object type TYP.
Issue a warning if PROTO is not adopted anywhere and WARN is set. */
 
static bool
objc_lookup_protocol (tree proto, tree cls, tree typ, bool warn)
{
bool class_type = (cls != NULL_TREE);
 
while (cls)
{
tree c;
 
/* Check protocols adopted by the class and its categories. */
for (c = cls; c; c = CLASS_CATEGORY_LIST (c))
{
if (lookup_protocol_in_reflist (CLASS_PROTOCOL_LIST (c), proto))
return true;
}
 
/* Repeat for superclasses. */
cls = lookup_interface (CLASS_SUPER_NAME (cls));
}
 
/* Check for any protocols attached directly to the object type. */
if (TYPE_HAS_OBJC_INFO (typ))
{
if (lookup_protocol_in_reflist (TYPE_OBJC_PROTOCOL_LIST (typ), proto))
return true;
}
 
if (warn)
{
*errbuf = 0;
gen_type_name_0 (class_type ? typ : TYPE_POINTER_TO (typ));
/* NB: Types 'id' and 'Class' cannot reasonably be described as
"implementing" a given protocol, since they do not have an
implementation. */
if (class_type)
warning (0, "class %qs does not implement the %qE protocol",
identifier_to_locale (errbuf), PROTOCOL_NAME (proto));
else
warning (0, "type %qs does not conform to the %qE protocol",
identifier_to_locale (errbuf), PROTOCOL_NAME (proto));
}
 
return false;
}
 
/* Check if class RCLS and instance struct type RTYP conform to at least the
same protocols that LCLS and LTYP conform to. */
 
static bool
objc_compare_protocols (tree lcls, tree ltyp, tree rcls, tree rtyp, bool warn)
{
tree p;
bool have_lproto = false;
 
while (lcls)
{
/* NB: We do _not_ look at categories defined for LCLS; these may or
may not get loaded in, and therefore it is unreasonable to require
that RCLS/RTYP must implement any of their protocols. */
for (p = CLASS_PROTOCOL_LIST (lcls); p; p = TREE_CHAIN (p))
{
have_lproto = true;
 
if (!objc_lookup_protocol (TREE_VALUE (p), rcls, rtyp, warn))
return warn;
}
 
/* Repeat for superclasses. */
lcls = lookup_interface (CLASS_SUPER_NAME (lcls));
}
 
/* Check for any protocols attached directly to the object type. */
if (TYPE_HAS_OBJC_INFO (ltyp))
{
for (p = TYPE_OBJC_PROTOCOL_LIST (ltyp); p; p = TREE_CHAIN (p))
{
have_lproto = true;
 
if (!objc_lookup_protocol (TREE_VALUE (p), rcls, rtyp, warn))
return warn;
}
}
 
/* NB: If LTYP and LCLS have no protocols to search for, return 'true'
vacuously, _unless_ RTYP is a protocol-qualified 'id'. We can get
away with simply checking for 'id' or 'Class' (!RCLS), since this
routine will not get called in other cases. */
return have_lproto || (rcls != NULL_TREE);
}
 
/* Given two types TYPE1 and TYPE2, return their least common ancestor.
Both TYPE1 and TYPE2 must be pointers, and already determined to be
compatible by objc_compare_types() below. */
 
tree
objc_common_type (tree type1, tree type2)
{
tree inner1 = TREE_TYPE (type1), inner2 = TREE_TYPE (type2);
 
while (POINTER_TYPE_P (inner1))
{
inner1 = TREE_TYPE (inner1);
inner2 = TREE_TYPE (inner2);
}
 
/* If one type is derived from another, return the base type. */
if (DERIVED_FROM_P (inner1, inner2))
return type1;
else if (DERIVED_FROM_P (inner2, inner1))
return type2;
 
/* If both types are 'Class', return 'Class'. */
if (objc_is_class_id (inner1) && objc_is_class_id (inner2))
return objc_class_type;
 
/* Otherwise, return 'id'. */
return objc_object_type;
}
 
/* Determine if it is permissible to assign (if ARGNO is greater than -3)
an instance of RTYP to an instance of LTYP or to compare the two
(if ARGNO is equal to -3), per ObjC type system rules. Before
returning 'true', this routine may issue warnings related to, e.g.,
protocol conformance. When returning 'false', the routine must
produce absolutely no warnings; the C or C++ front-end will do so
instead, if needed. If either LTYP or RTYP is not an Objective-C
type, the routine must return 'false'.
 
The ARGNO parameter is encoded as follows:
>= 1 Parameter number (CALLEE contains function being called);
0 Return value;
-1 Assignment;
-2 Initialization;
-3 Comparison (LTYP and RTYP may match in either direction);
-4 Silent comparison (for C++ overload resolution);
-5 Silent "specialization" comparison for RTYP to be a "specialization"
of LTYP (a specialization means that RTYP is LTYP plus some constraints,
so that each object of type RTYP is also of type LTYP). This is used
when comparing property types. */
 
bool
objc_compare_types (tree ltyp, tree rtyp, int argno, tree callee)
{
tree lcls, rcls, lproto, rproto;
bool pointers_compatible;
 
/* We must be dealing with pointer types */
if (!POINTER_TYPE_P (ltyp) || !POINTER_TYPE_P (rtyp))
return false;
 
do
{
ltyp = TREE_TYPE (ltyp); /* Remove indirections. */
rtyp = TREE_TYPE (rtyp);
}
while (POINTER_TYPE_P (ltyp) && POINTER_TYPE_P (rtyp));
 
/* We must also handle function pointers, since ObjC is a bit more
lenient than C or C++ on this. */
if (TREE_CODE (ltyp) == FUNCTION_TYPE && TREE_CODE (rtyp) == FUNCTION_TYPE)
{
function_args_iterator liter, riter;
 
/* Return types must be covariant. */
if (!comptypes (TREE_TYPE (ltyp), TREE_TYPE (rtyp))
&& !objc_compare_types (TREE_TYPE (ltyp), TREE_TYPE (rtyp),
argno, callee))
return false;
 
/* Argument types must be contravariant. */
function_args_iter_init (&liter, ltyp);
function_args_iter_init (&riter, rtyp);
 
while (1)
{
ltyp = function_args_iter_cond (&liter);
rtyp = function_args_iter_cond (&riter);
 
/* If we've exhaused both lists simulateously, we're done. */
if (ltyp == NULL_TREE && rtyp == NULL_TREE)
break;
 
/* If one list is shorter than the other, they fail to match. */
if (ltyp == NULL_TREE || rtyp == NULL_TREE)
return false;
 
if (!comptypes (rtyp, ltyp)
&& !objc_compare_types (rtyp, ltyp, argno, callee))
return false;
 
function_args_iter_next (&liter);
function_args_iter_next (&riter);
}
 
return true;
}
 
/* Past this point, we are only interested in ObjC class instances,
or 'id' or 'Class'. */
if (TREE_CODE (ltyp) != RECORD_TYPE || TREE_CODE (rtyp) != RECORD_TYPE)
return false;
 
if (!objc_is_object_id (ltyp) && !objc_is_class_id (ltyp)
&& !TYPE_HAS_OBJC_INFO (ltyp))
return false;
 
if (!objc_is_object_id (rtyp) && !objc_is_class_id (rtyp)
&& !TYPE_HAS_OBJC_INFO (rtyp))
return false;
 
/* Past this point, we are committed to returning 'true' to the caller
(unless performing a silent comparison; see below). However, we can
still warn about type and/or protocol mismatches. */
 
if (TYPE_HAS_OBJC_INFO (ltyp))
{
lcls = TYPE_OBJC_INTERFACE (ltyp);
lproto = TYPE_OBJC_PROTOCOL_LIST (ltyp);
}
else
lcls = lproto = NULL_TREE;
 
if (TYPE_HAS_OBJC_INFO (rtyp))
{
rcls = TYPE_OBJC_INTERFACE (rtyp);
rproto = TYPE_OBJC_PROTOCOL_LIST (rtyp);
}
else
rcls = rproto = NULL_TREE;
 
/* If we could not find an @interface declaration, we must have
only seen a @class declaration; for purposes of type comparison,
treat it as a stand-alone (root) class. */
 
if (lcls && TREE_CODE (lcls) == IDENTIFIER_NODE)
lcls = NULL_TREE;
 
if (rcls && TREE_CODE (rcls) == IDENTIFIER_NODE)
rcls = NULL_TREE;
 
/* If either type is an unqualified 'id', we're done. This is because
an 'id' can be assigned to or from any type with no warnings. */
if (argno != -5)
{
if ((!lproto && objc_is_object_id (ltyp))
|| (!rproto && objc_is_object_id (rtyp)))
return true;
}
else
{
/* For property checks, though, an 'id' is considered the most
general type of object, hence if you try to specialize an
'NSArray *' (ltyp) property with an 'id' (rtyp) one, we need
to warn. */
if (!lproto && objc_is_object_id (ltyp))
return true;
}
 
pointers_compatible = (TYPE_MAIN_VARIANT (ltyp) == TYPE_MAIN_VARIANT (rtyp));
 
/* If the underlying types are the same, and at most one of them has
a protocol list, we do not need to issue any diagnostics. */
if (pointers_compatible && (!lproto || !rproto))
return true;
 
/* If exactly one of the types is 'Class', issue a diagnostic; any
exceptions of this rule have already been handled. */
if (objc_is_class_id (ltyp) ^ objc_is_class_id (rtyp))
pointers_compatible = false;
/* Otherwise, check for inheritance relations. */
else
{
if (!pointers_compatible)
{
/* Again, if any of the two is an 'id', we're satisfied,
unless we're comparing properties, in which case only an
'id' on the left-hand side (old property) is good
enough. */
if (argno != -5)
pointers_compatible
= (objc_is_object_id (ltyp) || objc_is_object_id (rtyp));
else
pointers_compatible = objc_is_object_id (ltyp);
}
 
if (!pointers_compatible)
pointers_compatible = DERIVED_FROM_P (ltyp, rtyp);
 
if (!pointers_compatible && (argno == -3 || argno == -4))
pointers_compatible = DERIVED_FROM_P (rtyp, ltyp);
}
 
/* If the pointers match modulo protocols, check for protocol conformance
mismatches. */
if (pointers_compatible)
{
pointers_compatible = objc_compare_protocols (lcls, ltyp, rcls, rtyp,
argno != -3);
 
if (!pointers_compatible && argno == -3)
pointers_compatible = objc_compare_protocols (rcls, rtyp, lcls, ltyp,
argno != -3);
}
 
if (!pointers_compatible)
{
/* The two pointers are not exactly compatible. Issue a warning, unless
we are performing a silent comparison, in which case return 'false'
instead. */
/* NB: For the time being, we shall make our warnings look like their
C counterparts. In the future, we may wish to make them more
ObjC-specific. */
switch (argno)
{
case -5:
case -4:
return false;
 
case -3:
warning (0, "comparison of distinct Objective-C types lacks a cast");
break;
 
case -2:
warning (0, "initialization from distinct Objective-C type");
break;
 
case -1:
warning (0, "assignment from distinct Objective-C type");
break;
 
case 0:
warning (0, "distinct Objective-C type in return");
break;
 
default:
warning (0, "passing argument %d of %qE from distinct "
"Objective-C type", argno, callee);
break;
}
}
 
return true;
}
 
/* This routine is similar to objc_compare_types except that function-pointers are
excluded. This is because, caller assumes that common types are of (id, Object*)
variety and calls objc_common_type to obtain a common type. There is no commonolty
between two function-pointers in this regard. */
 
bool
objc_have_common_type (tree ltyp, tree rtyp, int argno, tree callee)
{
if (objc_compare_types (ltyp, rtyp, argno, callee))
{
/* exclude function-pointer types. */
do
{
ltyp = TREE_TYPE (ltyp); /* Remove indirections. */
rtyp = TREE_TYPE (rtyp);
}
while (POINTER_TYPE_P (ltyp) && POINTER_TYPE_P (rtyp));
return !(TREE_CODE (ltyp) == FUNCTION_TYPE && TREE_CODE (rtyp) == FUNCTION_TYPE);
}
return false;
}
 
#ifndef OBJCPLUS
/* Determine if CHILD is derived from PARENT. The routine assumes that
both parameters are RECORD_TYPEs, and is non-reflexive. */
 
static bool
objc_derived_from_p (tree parent, tree child)
{
parent = TYPE_MAIN_VARIANT (parent);
 
for (child = TYPE_MAIN_VARIANT (child);
TYPE_BINFO (child) && BINFO_N_BASE_BINFOS (TYPE_BINFO (child));)
{
child = TYPE_MAIN_VARIANT (BINFO_TYPE (BINFO_BASE_BINFO
(TYPE_BINFO (child),
0)));
 
if (child == parent)
return true;
}
 
return false;
}
#endif
 
tree
objc_build_component_ref (tree datum, tree component)
{
/* If COMPONENT is NULL, the caller is referring to the anonymous
base class field. */
if (!component)
{
tree base = TYPE_FIELDS (TREE_TYPE (datum));
 
return build3 (COMPONENT_REF, TREE_TYPE (base), datum, base, NULL_TREE);
}
 
/* The 'build_component_ref' routine has been removed from the C++
front-end, but 'finish_class_member_access_expr' seems to be
a worthy substitute. */
#ifdef OBJCPLUS
return finish_class_member_access_expr (datum, component, false,
tf_warning_or_error);
#else
return build_component_ref (input_location, datum, component);
#endif
}
 
/* Recursively copy inheritance information rooted at BINFO. To do this,
we emulate the song and dance performed by cp/tree.c:copy_binfo(). */
 
static tree
objc_copy_binfo (tree binfo)
{
tree btype = BINFO_TYPE (binfo);
tree binfo2 = make_tree_binfo (BINFO_N_BASE_BINFOS (binfo));
tree base_binfo;
int ix;
 
BINFO_TYPE (binfo2) = btype;
BINFO_OFFSET (binfo2) = BINFO_OFFSET (binfo);
BINFO_BASE_ACCESSES (binfo2) = BINFO_BASE_ACCESSES (binfo);
 
/* Recursively copy base binfos of BINFO. */
for (ix = 0; BINFO_BASE_ITERATE (binfo, ix, base_binfo); ix++)
{
tree base_binfo2 = objc_copy_binfo (base_binfo);
 
BINFO_INHERITANCE_CHAIN (base_binfo2) = binfo2;
BINFO_BASE_APPEND (binfo2, base_binfo2);
}
 
return binfo2;
}
 
/* Record superclass information provided in BASETYPE for ObjC class REF.
This is loosely based on cp/decl.c:xref_basetypes(). */
 
static void
objc_xref_basetypes (tree ref, tree basetype)
{
tree binfo = make_tree_binfo (basetype ? 1 : 0);
 
TYPE_BINFO (ref) = binfo;
BINFO_OFFSET (binfo) = size_zero_node;
BINFO_TYPE (binfo) = ref;
 
if (basetype)
{
tree base_binfo = objc_copy_binfo (TYPE_BINFO (basetype));
 
BINFO_INHERITANCE_CHAIN (base_binfo) = binfo;
BINFO_BASE_ACCESSES (binfo) = VEC_alloc (tree, gc, 1);
BINFO_BASE_APPEND (binfo, base_binfo);
BINFO_BASE_ACCESS_APPEND (binfo, access_public_node);
}
}
 
/* Called from finish_decl. */
 
void
objc_check_decl (tree decl)
{
tree type = TREE_TYPE (decl);
 
if (TREE_CODE (type) != RECORD_TYPE)
return;
if (OBJC_TYPE_NAME (type) && (type = objc_is_class_name (OBJC_TYPE_NAME (type))))
error ("statically allocated instance of Objective-C class %qE",
type);
}
 
void
objc_check_global_decl (tree decl)
{
tree id = DECL_NAME (decl);
if (objc_is_class_name (id) && global_bindings_p())
error ("redeclaration of Objective-C class %qs", IDENTIFIER_POINTER (id));
}
 
/* Construct a PROTOCOLS-qualified variant of INTERFACE, where
INTERFACE may either name an Objective-C class, or refer to the
special 'id' or 'Class' types. If INTERFACE is not a valid ObjC
type, just return it unchanged. This function is often called when
PROTOCOLS is NULL_TREE, in which case we simply look up the
appropriate INTERFACE. */
 
tree
objc_get_protocol_qualified_type (tree interface, tree protocols)
{
/* If INTERFACE is not provided, default to 'id'. */
tree type = (interface ? objc_is_id (interface) : objc_object_type);
bool is_ptr = (type != NULL_TREE);
 
if (!is_ptr)
{
type = objc_is_class_name (interface);
 
if (type)
{
/* If looking at a typedef, retrieve the precise type it
describes. */
if (TREE_CODE (interface) == IDENTIFIER_NODE)
interface = identifier_global_value (interface);
 
type = ((interface && TREE_CODE (interface) == TYPE_DECL
&& DECL_ORIGINAL_TYPE (interface))
? DECL_ORIGINAL_TYPE (interface)
: xref_tag (RECORD_TYPE, type));
}
else
{
/* This case happens when we are given an 'interface' which
is not a valid class name. For example if a typedef was
used, and 'interface' really is the identifier of the
typedef, but when you resolve it you don't get an
Objective-C class, but something else, such as 'int'.
This is an error; protocols make no sense unless you use
them with Objective-C objects. */
error_at (input_location, "only Objective-C object types can be qualified with a protocol");
 
/* Try to recover. Ignore the invalid class name, and treat
the object as an 'id' to silence further warnings about
the class. */
type = objc_object_type;
is_ptr = true;
}
}
 
if (protocols)
{
type = build_variant_type_copy (type);
 
/* For pointers (i.e., 'id' or 'Class'), attach the protocol(s)
to the pointee. */
if (is_ptr)
{
tree orig_pointee_type = TREE_TYPE (type);
TREE_TYPE (type) = build_variant_type_copy (orig_pointee_type);
 
/* Set up the canonical type information. */
TYPE_CANONICAL (type)
= TYPE_CANONICAL (TYPE_POINTER_TO (orig_pointee_type));
 
TYPE_POINTER_TO (TREE_TYPE (type)) = type;
type = TREE_TYPE (type);
}
 
/* Look up protocols and install in lang specific list. */
DUP_TYPE_OBJC_INFO (type, TYPE_MAIN_VARIANT (type));
TYPE_OBJC_PROTOCOL_LIST (type) = lookup_and_install_protocols
(protocols, /* definition_required */ false);
 
/* For RECORD_TYPEs, point to the @interface; for 'id' and 'Class',
return the pointer to the new pointee variant. */
if (is_ptr)
type = TYPE_POINTER_TO (type);
else
TYPE_OBJC_INTERFACE (type)
= TYPE_OBJC_INTERFACE (TYPE_MAIN_VARIANT (type));
}
 
return type;
}
 
/* Check for circular dependencies in protocols. The arguments are
PROTO, the protocol to check, and LIST, a list of protocol it
conforms to. */
 
static void
check_protocol_recursively (tree proto, tree list)
{
tree p;
 
for (p = list; p; p = TREE_CHAIN (p))
{
tree pp = TREE_VALUE (p);
 
if (TREE_CODE (pp) == IDENTIFIER_NODE)
pp = lookup_protocol (pp, /* warn if deprecated */ false,
/* definition_required */ false);
 
if (pp == proto)
fatal_error ("protocol %qE has circular dependency",
PROTOCOL_NAME (pp));
if (pp)
check_protocol_recursively (proto, PROTOCOL_LIST (pp));
}
}
 
/* Look up PROTOCOLS, and return a list of those that are found. If
none are found, return NULL. Note that this function will emit a
warning if a protocol is found and is deprecated. If
'definition_required', then warn if the protocol is found but is
not defined (ie, if we only saw a forward-declaration of the
protocol (as in "@protocol NSObject;") not a real definition with
the list of methods). */
static tree
lookup_and_install_protocols (tree protocols, bool definition_required)
{
tree proto;
tree return_value = NULL_TREE;
 
if (protocols == error_mark_node)
return NULL;
 
for (proto = protocols; proto; proto = TREE_CHAIN (proto))
{
tree ident = TREE_VALUE (proto);
tree p = lookup_protocol (ident, /* warn_if_deprecated */ true,
definition_required);
 
if (p)
return_value = chainon (return_value,
build_tree_list (NULL_TREE, p));
else if (ident != error_mark_node)
error ("cannot find protocol declaration for %qE",
ident);
}
 
return return_value;
}
 
static void
build_common_objc_exception_stuff (void)
{
tree noreturn_list, nothrow_list, temp_type;
 
noreturn_list = tree_cons (get_identifier ("noreturn"), NULL, NULL);
nothrow_list = tree_cons (get_identifier ("nothrow"), NULL, NULL);
 
/* void objc_exception_throw(id) __attribute__((noreturn)); */
/* void objc_sync_enter(id); */
/* void objc_sync_exit(id); */
temp_type = build_function_type_list (void_type_node,
objc_object_type,
NULL_TREE);
objc_exception_throw_decl
= add_builtin_function (TAG_EXCEPTIONTHROW, temp_type, 0, NOT_BUILT_IN, NULL,
noreturn_list);
/* Make sure that objc_exception_throw (id) claims that it may throw an
exception. */
TREE_NOTHROW (objc_exception_throw_decl) = 0;
 
objc_sync_enter_decl
= add_builtin_function (TAG_SYNCENTER, temp_type, 0, NOT_BUILT_IN,
NULL, nothrow_list);
 
objc_sync_exit_decl
= add_builtin_function (TAG_SYNCEXIT, temp_type, 0, NOT_BUILT_IN,
NULL, nothrow_list);
}
 
/* Purpose: "play" parser, creating/installing representations
of the declarations that are required by Objective-C.
 
Model:
 
type_spec--------->sc_spec
(tree_list) (tree_list)
| |
| |
identifier_node identifier_node */
 
static void
synth_module_prologue (void)
{
tree type;
enum debug_info_type save_write_symbols = write_symbols;
const struct gcc_debug_hooks *const save_hooks = debug_hooks;
 
/* Suppress outputting debug symbols, because
dbxout_init hasn't been called yet. */
write_symbols = NO_DEBUG;
debug_hooks = &do_nothing_debug_hooks;
 
#ifdef OBJCPLUS
push_lang_context (lang_name_c); /* extern "C" */
#endif
 
/* The following are also defined in <objc/objc.h> and friends. */
 
objc_object_id = get_identifier (TAG_OBJECT);
objc_class_id = get_identifier (TAG_CLASS);
 
objc_object_reference = xref_tag (RECORD_TYPE, objc_object_id);
objc_class_reference = xref_tag (RECORD_TYPE, objc_class_id);
 
objc_object_type = build_pointer_type (objc_object_reference);
objc_class_type = build_pointer_type (objc_class_reference);
 
objc_object_name = get_identifier (OBJECT_TYPEDEF_NAME);
objc_class_name = get_identifier (CLASS_TYPEDEF_NAME);
 
/* Declare the 'id' and 'Class' typedefs. */
type = lang_hooks.decls.pushdecl (build_decl (input_location,
TYPE_DECL,
objc_object_name,
objc_object_type));
TREE_NO_WARNING (type) = 1;
 
type = lang_hooks.decls.pushdecl (build_decl (input_location,
TYPE_DECL,
objc_class_name,
objc_class_type));
TREE_NO_WARNING (type) = 1;
 
/* Forward-declare '@interface Protocol'. */
type = get_identifier (PROTOCOL_OBJECT_CLASS_NAME);
objc_declare_class (type);
objc_protocol_type = build_pointer_type (xref_tag (RECORD_TYPE, type));
 
/* Declare receiver type used for dispatching messages to 'super'. */
/* `struct objc_super *' */
objc_super_type = build_pointer_type (xref_tag (RECORD_TYPE,
get_identifier (TAG_SUPER)));
 
/* Declare pointers to method and ivar lists. */
objc_method_list_ptr = build_pointer_type
(xref_tag (RECORD_TYPE,
get_identifier (UTAG_METHOD_LIST)));
objc_method_proto_list_ptr
= build_pointer_type (xref_tag (RECORD_TYPE,
get_identifier (UTAG_METHOD_PROTOTYPE_LIST)));
objc_ivar_list_ptr = build_pointer_type
(xref_tag (RECORD_TYPE,
get_identifier (UTAG_IVAR_LIST)));
 
build_common_objc_exception_stuff ();
 
/* Set-up runtime-specific templates, message and exception stuff. */
(*runtime.initialize) ();
 
/* Declare objc_getProperty, object_setProperty and other property
accessor helpers. */
build_common_objc_property_accessor_helpers ();
 
/* Forward declare constant_string_id and constant_string_type. */
if (!constant_string_class_name)
constant_string_class_name = runtime.default_constant_string_class_name;
constant_string_id = get_identifier (constant_string_class_name);
objc_declare_class (constant_string_id);
 
/* Pre-build the following entities - for speed/convenience. */
self_id = get_identifier ("self");
ucmd_id = get_identifier ("_cmd");
 
/* Declare struct _objc_fast_enumeration_state { ... }; */
build_fast_enumeration_state_template ();
 
/* void objc_enumeration_mutation (id) */
type = build_function_type_list (void_type_node,
objc_object_type, NULL_TREE);
objc_enumeration_mutation_decl
= add_builtin_function (TAG_ENUMERATION_MUTATION, type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
TREE_NOTHROW (objc_enumeration_mutation_decl) = 0;
 
#ifdef OBJCPLUS
pop_lang_context ();
#endif
 
write_symbols = save_write_symbols;
debug_hooks = save_hooks;
}
 
/* --- const strings --- */
 
/* Ensure that the ivar list for NSConstantString/NXConstantString
(or whatever was specified via `-fconstant-string-class')
contains fields at least as large as the following three, so that
the runtime can stomp on them with confidence:
 
struct STRING_OBJECT_CLASS_NAME
{
Object isa;
char *cString;
unsigned int length;
}; */
 
static int
check_string_class_template (void)
{
tree field_decl = objc_get_class_ivars (constant_string_id);
 
#define AT_LEAST_AS_LARGE_AS(F, T) \
(F && TREE_CODE (F) == FIELD_DECL \
&& (TREE_INT_CST_LOW (TYPE_SIZE (TREE_TYPE (F))) \
>= TREE_INT_CST_LOW (TYPE_SIZE (T))))
 
if (!AT_LEAST_AS_LARGE_AS (field_decl, ptr_type_node))
return 0;
 
field_decl = DECL_CHAIN (field_decl);
if (!AT_LEAST_AS_LARGE_AS (field_decl, ptr_type_node))
return 0;
 
field_decl = DECL_CHAIN (field_decl);
return AT_LEAST_AS_LARGE_AS (field_decl, unsigned_type_node);
 
#undef AT_LEAST_AS_LARGE_AS
}
 
/* Avoid calling `check_string_class_template ()' more than once. */
static GTY(()) int string_layout_checked;
 
/* Construct an internal string layout to be used as a template for
creating NSConstantString/NXConstantString instances. */
 
static tree
objc_build_internal_const_str_type (void)
{
tree type = (*lang_hooks.types.make_type) (RECORD_TYPE);
tree fields = build_decl (input_location,
FIELD_DECL, NULL_TREE, ptr_type_node);
tree field = build_decl (input_location,
FIELD_DECL, NULL_TREE, ptr_type_node);
 
DECL_CHAIN (field) = fields; fields = field;
field = build_decl (input_location,
FIELD_DECL, NULL_TREE, unsigned_type_node);
DECL_CHAIN (field) = fields; fields = field;
/* NB: The finish_builtin_struct() routine expects FIELD_DECLs in
reverse order! */
finish_builtin_struct (type, "__builtin_ObjCString",
fields, NULL_TREE);
 
return type;
}
 
/* Custom build_string which sets TREE_TYPE! */
 
tree
my_build_string (int len, const char *str)
{
return fix_string_type (build_string (len, str));
}
 
/* Build a string with contents STR and length LEN and convert it to a
pointer. */
 
tree
my_build_string_pointer (int len, const char *str)
{
tree string = my_build_string (len, str);
tree ptrtype = build_pointer_type (TREE_TYPE (TREE_TYPE (string)));
return build1 (ADDR_EXPR, ptrtype, string);
}
 
static hashval_t
string_hash (const void *ptr)
{
const_tree const str = ((const struct string_descriptor *)ptr)->literal;
const unsigned char *p = (const unsigned char *) TREE_STRING_POINTER (str);
int i, len = TREE_STRING_LENGTH (str);
hashval_t h = len;
 
for (i = 0; i < len; i++)
h = ((h * 613) + p[i]);
 
return h;
}
 
static int
string_eq (const void *ptr1, const void *ptr2)
{
const_tree const str1 = ((const struct string_descriptor *)ptr1)->literal;
const_tree const str2 = ((const struct string_descriptor *)ptr2)->literal;
int len1 = TREE_STRING_LENGTH (str1);
 
return (len1 == TREE_STRING_LENGTH (str2)
&& !memcmp (TREE_STRING_POINTER (str1), TREE_STRING_POINTER (str2),
len1));
}
 
/* Given a chain of STRING_CST's, build a static instance of
NXConstantString which points at the concatenation of those
strings. We place the string object in the __string_objects
section of the __OBJC segment. The Objective-C runtime will
initialize the isa pointers of the string objects to point at the
NXConstantString class object. */
 
tree
objc_build_string_object (tree string)
{
tree constant_string_class;
int length;
tree addr;
struct string_descriptor *desc, key;
void **loc;
 
/* We should be passed a STRING_CST. */
gcc_checking_assert (TREE_CODE (string) == STRING_CST);
length = TREE_STRING_LENGTH (string) - 1;
 
/* The target may have different ideas on how to construct an ObjC string
literal. On Darwin (Mac OS X), for example, we may wish to obtain a
constant CFString reference instead.
At present, this is only supported for the NeXT runtime. */
if (flag_next_runtime
&& targetcm.objc_construct_string_object)
{
tree constructor = (*targetcm.objc_construct_string_object) (string);
if (constructor)
return build1 (NOP_EXPR, objc_object_type, constructor);
}
 
/* Check whether the string class being used actually exists and has the
correct ivar layout. */
if (!string_layout_checked)
{
string_layout_checked = -1;
constant_string_class = lookup_interface (constant_string_id);
internal_const_str_type = objc_build_internal_const_str_type ();
 
if (!constant_string_class
|| !(constant_string_type
= CLASS_STATIC_TEMPLATE (constant_string_class)))
error ("cannot find interface declaration for %qE",
constant_string_id);
/* The NSConstantString/NXConstantString ivar layout is now known. */
else if (!check_string_class_template ())
error ("interface %qE does not have valid constant string layout",
constant_string_id);
/* If the runtime can generate a literal reference to the string class,
don't need to run a constructor. */
else if (!(*runtime.setup_const_string_class_decl)())
error ("cannot find reference tag for class %qE", constant_string_id);
else
{
string_layout_checked = 1; /* Success! */
add_class_reference (constant_string_id);
}
}
 
if (string_layout_checked == -1)
return error_mark_node;
 
/* Perhaps we already constructed a constant string just like this one? */
key.literal = string;
loc = htab_find_slot (string_htab, &key, INSERT);
desc = (struct string_descriptor *) *loc;
 
if (!desc)
{
*loc = desc = ggc_alloc_string_descriptor ();
desc->literal = string;
desc->constructor =
(*runtime.build_const_string_constructor) (input_location, string, length);
}
 
addr = convert (build_pointer_type (constant_string_type),
build_unary_op (input_location,
ADDR_EXPR, desc->constructor, 1));
 
return addr;
}
 
/* Build a static constant CONSTRUCTOR
with type TYPE and elements ELTS. */
 
tree
objc_build_constructor (tree type, VEC(constructor_elt,gc) *elts)
{
tree constructor = build_constructor (type, elts);
 
TREE_CONSTANT (constructor) = 1;
TREE_STATIC (constructor) = 1;
TREE_READONLY (constructor) = 1;
 
#ifdef OBJCPLUS
/* Adjust for impedance mismatch. We should figure out how to build
CONSTRUCTORs that consistently please both the C and C++ gods. */
if (!VEC_index (constructor_elt, elts, 0)->index)
TREE_TYPE (constructor) = init_list_type_node;
#endif
 
return constructor;
}
 
/* Return the DECL of the string IDENT in the SECTION. */
 
tree
get_objc_string_decl (tree ident, enum string_section section)
{
tree chain;
 
switch (section)
{
case class_names:
chain = class_names_chain;
break;
case meth_var_names:
chain = meth_var_names_chain;
break;
case meth_var_types:
chain = meth_var_types_chain;
break;
case prop_names_attr:
chain = prop_names_attr_chain;
break;
default:
gcc_unreachable ();
}
 
for (; chain != 0; chain = TREE_CHAIN (chain))
if (TREE_VALUE (chain) == ident)
return (TREE_PURPOSE (chain));
 
/* We didn't find the entry. */
return NULL_TREE;
}
 
/* Create a class reference, but don't create a variable to reference
it. */
 
void
add_class_reference (tree ident)
{
tree chain;
 
if ((chain = cls_ref_chain))
{
tree tail;
do
{
if (ident == TREE_VALUE (chain))
return;
 
tail = chain;
chain = TREE_CHAIN (chain);
}
while (chain);
 
/* Append to the end of the list */
TREE_CHAIN (tail) = tree_cons (NULL_TREE, ident, NULL_TREE);
}
else
cls_ref_chain = tree_cons (NULL_TREE, ident, NULL_TREE);
}
 
/* Get a class reference, creating it if necessary. Also create the
reference variable. */
tree
objc_get_class_reference (tree ident)
{
tree orig_ident = (DECL_P (ident)
? DECL_NAME (ident)
: TYPE_P (ident)
? OBJC_TYPE_NAME (ident)
: ident);
bool local_scope = false;
 
#ifdef OBJCPLUS
if (processing_template_decl)
/* Must wait until template instantiation time. */
return build_min_nt (CLASS_REFERENCE_EXPR, ident);
#endif
 
if (TREE_CODE (ident) == TYPE_DECL)
ident = (DECL_ORIGINAL_TYPE (ident)
? DECL_ORIGINAL_TYPE (ident)
: TREE_TYPE (ident));
 
#ifdef OBJCPLUS
if (TYPE_P (ident)
&& CP_TYPE_CONTEXT (ident) != global_namespace)
local_scope = true;
#endif
 
if (local_scope || !(ident = objc_is_class_name (ident)))
{
error ("%qE is not an Objective-C class name or alias",
orig_ident);
return error_mark_node;
}
 
return (*runtime.get_class_reference) (ident);
}
 
void
objc_declare_alias (tree alias_ident, tree class_ident)
{
tree underlying_class;
 
#ifdef OBJCPLUS
if (current_namespace != global_namespace) {
error ("Objective-C declarations may only appear in global scope");
}
#endif /* OBJCPLUS */
 
if (!(underlying_class = objc_is_class_name (class_ident)))
warning (0, "cannot find class %qE", class_ident);
else if (objc_is_class_name (alias_ident))
warning (0, "class %qE already exists", alias_ident);
else
{
/* Implement @compatibility_alias as a typedef. */
#ifdef OBJCPLUS
push_lang_context (lang_name_c); /* extern "C" */
#endif
lang_hooks.decls.pushdecl (build_decl
(input_location,
TYPE_DECL,
alias_ident,
xref_tag (RECORD_TYPE, underlying_class)));
#ifdef OBJCPLUS
pop_lang_context ();
#endif
objc_map_put (alias_name_map, alias_ident, underlying_class);
}
}
 
void
objc_declare_class (tree identifier)
{
#ifdef OBJCPLUS
if (current_namespace != global_namespace) {
error ("Objective-C declarations may only appear in global scope");
}
#endif /* OBJCPLUS */
 
if (! objc_is_class_name (identifier))
{
tree record = lookup_name (identifier), type = record;
 
if (record)
{
if (TREE_CODE (record) == TYPE_DECL)
type = DECL_ORIGINAL_TYPE (record)
? DECL_ORIGINAL_TYPE (record)
: TREE_TYPE (record);
 
if (!TYPE_HAS_OBJC_INFO (type)
|| !TYPE_OBJC_INTERFACE (type))
{
error ("%qE redeclared as different kind of symbol",
identifier);
error ("previous declaration of %q+D",
record);
}
}
 
record = xref_tag (RECORD_TYPE, identifier);
INIT_TYPE_OBJC_INFO (record);
/* In the case of a @class declaration, we store the ident in
the TYPE_OBJC_INTERFACE. If later an @interface is found,
we'll replace the ident with the interface. */
TYPE_OBJC_INTERFACE (record) = identifier;
objc_map_put (class_name_map, identifier, NULL_TREE);
}
}
 
tree
objc_is_class_name (tree ident)
{
if (ident && TREE_CODE (ident) == IDENTIFIER_NODE)
{
tree t = identifier_global_value (ident);
if (t)
ident = t;
}
 
while (ident && TREE_CODE (ident) == TYPE_DECL && DECL_ORIGINAL_TYPE (ident))
ident = OBJC_TYPE_NAME (DECL_ORIGINAL_TYPE (ident));
 
if (ident && TREE_CODE (ident) == RECORD_TYPE)
ident = OBJC_TYPE_NAME (ident);
#ifdef OBJCPLUS
if (ident && TREE_CODE (ident) == TYPE_DECL)
{
tree type = TREE_TYPE (ident);
if (type && TREE_CODE (type) == TEMPLATE_TYPE_PARM)
return NULL_TREE;
ident = DECL_NAME (ident);
}
#endif
if (!ident || TREE_CODE (ident) != IDENTIFIER_NODE)
return NULL_TREE;
 
if (lookup_interface (ident))
return ident;
 
{
tree target;
 
target = objc_map_get (class_name_map, ident);
if (target != OBJC_MAP_NOT_FOUND)
return ident;
 
target = objc_map_get (alias_name_map, ident);
if (target != OBJC_MAP_NOT_FOUND)
return target;
}
 
return 0;
}
 
/* Check whether TYPE is either 'id' or 'Class'. */
 
tree
objc_is_id (tree type)
{
if (type && TREE_CODE (type) == IDENTIFIER_NODE)
{
tree t = identifier_global_value (type);
if (t)
type = t;
}
 
if (type && TREE_CODE (type) == TYPE_DECL)
type = TREE_TYPE (type);
 
/* NB: This function may be called before the ObjC front-end has
been initialized, in which case OBJC_OBJECT_TYPE will (still) be NULL. */
return (objc_object_type && type
&& (IS_ID (type) || IS_CLASS (type) || IS_SUPER (type))
? type
: NULL_TREE);
}
 
/* Check whether TYPE is either 'id', 'Class', or a pointer to an ObjC
class instance. This is needed by other parts of the compiler to
handle ObjC types gracefully. */
 
tree
objc_is_object_ptr (tree type)
{
tree ret;
 
type = TYPE_MAIN_VARIANT (type);
if (!POINTER_TYPE_P (type))
return 0;
 
ret = objc_is_id (type);
if (!ret)
ret = objc_is_class_name (TREE_TYPE (type));
 
return ret;
}
 
static int
objc_is_gcable_type (tree type, int or_strong_p)
{
tree name;
 
if (!TYPE_P (type))
return 0;
if (objc_is_id (TYPE_MAIN_VARIANT (type)))
return 1;
if (or_strong_p && lookup_attribute ("objc_gc", TYPE_ATTRIBUTES (type)))
return 1;
if (TREE_CODE (type) != POINTER_TYPE && TREE_CODE (type) != INDIRECT_REF)
return 0;
type = TREE_TYPE (type);
if (TREE_CODE (type) != RECORD_TYPE)
return 0;
name = TYPE_NAME (type);
return (objc_is_class_name (name) != NULL_TREE);
}
 
static tree
objc_substitute_decl (tree expr, tree oldexpr, tree newexpr)
{
if (expr == oldexpr)
return newexpr;
 
switch (TREE_CODE (expr))
{
case COMPONENT_REF:
return objc_build_component_ref
(objc_substitute_decl (TREE_OPERAND (expr, 0),
oldexpr,
newexpr),
DECL_NAME (TREE_OPERAND (expr, 1)));
case ARRAY_REF:
return build_array_ref (input_location,
objc_substitute_decl (TREE_OPERAND (expr, 0),
oldexpr,
newexpr),
TREE_OPERAND (expr, 1));
case INDIRECT_REF:
return build_indirect_ref (input_location,
objc_substitute_decl (TREE_OPERAND (expr, 0),
oldexpr,
newexpr), RO_ARROW);
default:
return expr;
}
}
 
static tree
objc_build_ivar_assignment (tree outervar, tree lhs, tree rhs)
{
tree func_params;
/* The LHS parameter contains the expression 'outervar->memberspec';
we need to transform it into '&((typeof(outervar) *) 0)->memberspec',
where memberspec may be arbitrarily complex (e.g., 'g->f.d[2].g[3]').
*/
tree offs
= objc_substitute_decl
(lhs, outervar, convert (TREE_TYPE (outervar), integer_zero_node));
tree func
= (flag_objc_direct_dispatch
? objc_assign_ivar_fast_decl
: objc_assign_ivar_decl);
 
offs = convert (integer_type_node, build_unary_op (input_location,
ADDR_EXPR, offs, 0));
offs = fold (offs);
func_params = tree_cons (NULL_TREE,
convert (objc_object_type, rhs),
tree_cons (NULL_TREE, convert (objc_object_type, outervar),
tree_cons (NULL_TREE, offs,
NULL_TREE)));
 
assemble_external (func);
return build_function_call (input_location, func, func_params);
}
 
static tree
objc_build_global_assignment (tree lhs, tree rhs)
{
tree func_params = tree_cons (NULL_TREE,
convert (objc_object_type, rhs),
tree_cons (NULL_TREE, convert (build_pointer_type (objc_object_type),
build_unary_op (input_location, ADDR_EXPR, lhs, 0)),
NULL_TREE));
 
assemble_external (objc_assign_global_decl);
return build_function_call (input_location,
objc_assign_global_decl, func_params);
}
 
static tree
objc_build_strong_cast_assignment (tree lhs, tree rhs)
{
tree func_params = tree_cons (NULL_TREE,
convert (objc_object_type, rhs),
tree_cons (NULL_TREE, convert (build_pointer_type (objc_object_type),
build_unary_op (input_location, ADDR_EXPR, lhs, 0)),
NULL_TREE));
 
assemble_external (objc_assign_strong_cast_decl);
return build_function_call (input_location,
objc_assign_strong_cast_decl, func_params);
}
 
static int
objc_is_gcable_p (tree expr)
{
return (TREE_CODE (expr) == COMPONENT_REF
? objc_is_gcable_p (TREE_OPERAND (expr, 1))
: TREE_CODE (expr) == ARRAY_REF
? (objc_is_gcable_p (TREE_TYPE (expr))
|| objc_is_gcable_p (TREE_OPERAND (expr, 0)))
: TREE_CODE (expr) == ARRAY_TYPE
? objc_is_gcable_p (TREE_TYPE (expr))
: TYPE_P (expr)
? objc_is_gcable_type (expr, 1)
: (objc_is_gcable_p (TREE_TYPE (expr))
|| (DECL_P (expr)
&& lookup_attribute ("objc_gc", DECL_ATTRIBUTES (expr)))));
}
 
static int
objc_is_ivar_reference_p (tree expr)
{
return (TREE_CODE (expr) == ARRAY_REF
? objc_is_ivar_reference_p (TREE_OPERAND (expr, 0))
: TREE_CODE (expr) == COMPONENT_REF
? TREE_CODE (TREE_OPERAND (expr, 1)) == FIELD_DECL
: 0);
}
 
static int
objc_is_global_reference_p (tree expr)
{
return (TREE_CODE (expr) == INDIRECT_REF || TREE_CODE (expr) == PLUS_EXPR
? objc_is_global_reference_p (TREE_OPERAND (expr, 0))
: DECL_P (expr)
? (DECL_FILE_SCOPE_P (expr) || TREE_STATIC (expr))
: 0);
}
 
tree
objc_generate_write_barrier (tree lhs, enum tree_code modifycode, tree rhs)
{
tree result = NULL_TREE, outer;
int strong_cast_p = 0, outer_gc_p = 0, indirect_p = 0;
 
/* This function is currently only used with the next runtime with
garbage collection enabled (-fobjc-gc). */
gcc_assert (flag_next_runtime);
 
/* See if we have any lhs casts, and strip them out. NB: The lvalue casts
will have been transformed to the form '*(type *)&expr'. */
if (TREE_CODE (lhs) == INDIRECT_REF)
{
outer = TREE_OPERAND (lhs, 0);
 
while (!strong_cast_p
&& (CONVERT_EXPR_P (outer)
|| TREE_CODE (outer) == NON_LVALUE_EXPR))
{
tree lhstype = TREE_TYPE (outer);
 
/* Descend down the cast chain, and record the first objc_gc
attribute found. */
if (POINTER_TYPE_P (lhstype))
{
tree attr
= lookup_attribute ("objc_gc",
TYPE_ATTRIBUTES (TREE_TYPE (lhstype)));
 
if (attr)
strong_cast_p = 1;
}
 
outer = TREE_OPERAND (outer, 0);
}
}
 
/* If we have a __strong cast, it trumps all else. */
if (strong_cast_p)
{
if (modifycode != NOP_EXPR)
goto invalid_pointer_arithmetic;
 
if (warn_assign_intercept)
warning (0, "strong-cast assignment has been intercepted");
 
result = objc_build_strong_cast_assignment (lhs, rhs);
 
goto exit_point;
}
 
/* the lhs must be of a suitable type, regardless of its underlying
structure. */
if (!objc_is_gcable_p (lhs))
goto exit_point;
 
outer = lhs;
 
while (outer
&& (TREE_CODE (outer) == COMPONENT_REF
|| TREE_CODE (outer) == ARRAY_REF))
outer = TREE_OPERAND (outer, 0);
 
if (TREE_CODE (outer) == INDIRECT_REF)
{
outer = TREE_OPERAND (outer, 0);
indirect_p = 1;
}
 
outer_gc_p = objc_is_gcable_p (outer);
 
/* Handle ivar assignments. */
if (objc_is_ivar_reference_p (lhs))
{
/* if the struct to the left of the ivar is not an Objective-C object (__strong
doesn't cut it here), the best we can do here is suggest a cast. */
if (!objc_is_gcable_type (TREE_TYPE (outer), 0))
{
/* We may still be able to use the global write barrier... */
if (!indirect_p && objc_is_global_reference_p (outer))
goto global_reference;
 
suggest_cast:
if (modifycode == NOP_EXPR)
{
if (warn_assign_intercept)
warning (0, "strong-cast may possibly be needed");
}
 
goto exit_point;
}
 
if (modifycode != NOP_EXPR)
goto invalid_pointer_arithmetic;
 
if (warn_assign_intercept)
warning (0, "instance variable assignment has been intercepted");
 
result = objc_build_ivar_assignment (outer, lhs, rhs);
 
goto exit_point;
}
 
/* Likewise, intercept assignment to global/static variables if their type is
GC-marked. */
if (objc_is_global_reference_p (outer))
{
if (indirect_p)
goto suggest_cast;
 
global_reference:
if (modifycode != NOP_EXPR)
{
invalid_pointer_arithmetic:
if (outer_gc_p)
warning (0, "pointer arithmetic for garbage-collected objects not allowed");
 
goto exit_point;
}
 
if (warn_assign_intercept)
warning (0, "global/static variable assignment has been intercepted");
 
result = objc_build_global_assignment (lhs, rhs);
}
 
/* In all other cases, fall back to the normal mechanism. */
exit_point:
return result;
}
 
/* Implementation of the table mapping a class name (as an identifier)
to a class node. The two public functions for it are
lookup_interface() and add_interface(). add_interface() is only
used in this file, so we can make it static. */
 
static GTY(()) objc_map_t interface_map;
 
static void
interface_hash_init (void)
{
interface_map = objc_map_alloc_ggc (200);
}
 
static tree
add_interface (tree class_name, tree name)
{
/* Put interfaces on list in reverse order. */
TREE_CHAIN (class_name) = interface_chain;
interface_chain = class_name;
 
/* Add it to the map. */
objc_map_put (interface_map, name, class_name);
 
return interface_chain;
}
 
tree
lookup_interface (tree ident)
{
#ifdef OBJCPLUS
if (ident && TREE_CODE (ident) == TYPE_DECL)
ident = DECL_NAME (ident);
#endif
 
if (ident == NULL_TREE || TREE_CODE (ident) != IDENTIFIER_NODE)
return NULL_TREE;
 
{
tree interface = objc_map_get (interface_map, ident);
 
if (interface == OBJC_MAP_NOT_FOUND)
return NULL_TREE;
else
return interface;
}
}
 
 
 
/* Implement @defs (<classname>) within struct bodies. */
 
tree
objc_get_class_ivars (tree class_name)
{
tree interface = lookup_interface (class_name);
 
if (interface)
return get_class_ivars (interface, true);
 
error ("cannot find interface declaration for %qE",
class_name);
 
return error_mark_node;
}
 
 
/* Functions used by the hashtable for field duplicates in
objc_detect_field_duplicates(). Ideally, we'd use a standard
key-value dictionary hashtable , and store as keys the field names,
and as values the actual declarations (used to print nice error
messages with the locations). But, the hashtable we are using only
allows us to store keys in the hashtable, without values (it looks
more like a set). So, we store the DECLs, but define equality as
DECLs having the same name, and hash as the hash of the name. */
static hashval_t
hash_instance_variable (const PTR p)
{
const_tree q = (const_tree)p;
return (hashval_t) ((intptr_t)(DECL_NAME (q)) >> 3);
}
 
static int
eq_instance_variable (const PTR p1, const PTR p2)
{
const_tree a = (const_tree)p1;
const_tree b = (const_tree)p2;
return DECL_NAME (a) == DECL_NAME (b);
}
 
/* Called when checking the variables in a struct. If we are not
doing the ivars list inside an @interface context, then return
false. Else, perform the check for duplicate ivars, then return
true. The check for duplicates checks if an instance variable with
the same name exists in the class or in a superclass. If
'check_superclasses_only' is set to true, then it is assumed that
checks for instance variables in the same class has already been
performed (this is the case for ObjC++) and only the instance
variables of superclasses are checked. */
bool
objc_detect_field_duplicates (bool check_superclasses_only)
{
if (!objc_collecting_ivars || !objc_interface_context
|| TREE_CODE (objc_interface_context) != CLASS_INTERFACE_TYPE)
return false;
 
/* We have two ways of doing this check:
 
"direct comparison": we iterate over the instance variables and
compare them directly. This works great for small numbers of
instance variables (such as 10 or 20), which are extremely common.
But it will potentially take forever for the pathological case with
a huge number (eg, 10k) of instance variables.
 
"hashtable": we use a hashtable, which requires a single sweep
through the list of instances variables. This is much slower for a
small number of variables, and we only use it for large numbers.
 
To decide which one to use, we need to get an idea of how many
instance variables we have to compare. */
{
unsigned int number_of_ivars_to_check = 0;
{
tree ivar;
for (ivar = CLASS_RAW_IVARS (objc_interface_context);
ivar; ivar = DECL_CHAIN (ivar))
{
/* Ignore anonymous ivars. */
if (DECL_NAME (ivar))
number_of_ivars_to_check++;
}
}
 
/* Exit if there is nothing to do. */
if (number_of_ivars_to_check == 0)
return true;
 
/* In case that there are only 1 or 2 instance variables to check,
we always use direct comparison. If there are more, it is
worth iterating over the instance variables in the superclass
to count how many there are (note that this has the same cost
as checking 1 instance variable by direct comparison, which is
why we skip this check in the case of 1 or 2 ivars and just do
the direct comparison) and then decide if it worth using a
hashtable. */
if (number_of_ivars_to_check > 2)
{
unsigned int number_of_superclass_ivars = 0;
{
tree interface;
for (interface = lookup_interface (CLASS_SUPER_NAME (objc_interface_context));
interface; interface = lookup_interface (CLASS_SUPER_NAME (interface)))
{
tree ivar;
for (ivar = CLASS_RAW_IVARS (interface);
ivar; ivar = DECL_CHAIN (ivar))
number_of_superclass_ivars++;
}
}
 
/* We use a hashtable if we have over 10k comparisons. */
if (number_of_ivars_to_check * (number_of_superclass_ivars
+ (number_of_ivars_to_check / 2))
> 10000)
{
/* First, build the hashtable by putting all the instance
variables of superclasses in it. */
htab_t htab = htab_create (37, hash_instance_variable,
eq_instance_variable, NULL);
tree interface;
for (interface = lookup_interface (CLASS_SUPER_NAME
(objc_interface_context));
interface; interface = lookup_interface
(CLASS_SUPER_NAME (interface)))
{
tree ivar;
for (ivar = CLASS_RAW_IVARS (interface); ivar;
ivar = DECL_CHAIN (ivar))
{
if (DECL_NAME (ivar) != NULL_TREE)
{
void **slot = htab_find_slot (htab, ivar, INSERT);
/* Do not check for duplicate instance
variables in superclasses. Errors have
already been generated. */
*slot = ivar;
}
}
}
 
/* Now, we go through all the instance variables in the
class, and check that they are not in the
hashtable. */
if (check_superclasses_only)
{
tree ivar;
for (ivar = CLASS_RAW_IVARS (objc_interface_context); ivar;
ivar = DECL_CHAIN (ivar))
{
if (DECL_NAME (ivar) != NULL_TREE)
{
tree duplicate_ivar = (tree)(htab_find (htab, ivar));
if (duplicate_ivar != HTAB_EMPTY_ENTRY)
{
error_at (DECL_SOURCE_LOCATION (ivar),
"duplicate instance variable %q+D",
ivar);
inform (DECL_SOURCE_LOCATION (duplicate_ivar),
"previous declaration of %q+D",
duplicate_ivar);
/* FIXME: Do we need the following ? */
/* DECL_NAME (ivar) = NULL_TREE; */
}
}
}
}
else
{
/* If we're checking for duplicates in the class as
well, we insert variables in the hashtable as we
check them, so if a duplicate follows, it will be
caught. */
tree ivar;
for (ivar = CLASS_RAW_IVARS (objc_interface_context); ivar;
ivar = DECL_CHAIN (ivar))
{
if (DECL_NAME (ivar) != NULL_TREE)
{
void **slot = htab_find_slot (htab, ivar, INSERT);
if (*slot)
{
tree duplicate_ivar = (tree)(*slot);
error_at (DECL_SOURCE_LOCATION (ivar),
"duplicate instance variable %q+D",
ivar);
inform (DECL_SOURCE_LOCATION (duplicate_ivar),
"previous declaration of %q+D",
duplicate_ivar);
/* FIXME: Do we need the following ? */
/* DECL_NAME (ivar) = NULL_TREE; */
}
*slot = ivar;
}
}
}
htab_delete (htab);
return true;
}
}
}
 
/* This is the "direct comparison" approach, which is used in most
non-pathological cases. */
{
/* Walk up to class hierarchy, starting with this class (this is
the external loop, because lookup_interface() is expensive, and
we want to do it few times). */
tree interface = objc_interface_context;
 
if (check_superclasses_only)
interface = lookup_interface (CLASS_SUPER_NAME (interface));
 
for ( ; interface; interface = lookup_interface
(CLASS_SUPER_NAME (interface)))
{
tree ivar_being_checked;
 
for (ivar_being_checked = CLASS_RAW_IVARS (objc_interface_context);
ivar_being_checked;
ivar_being_checked = DECL_CHAIN (ivar_being_checked))
{
tree decl;
 
/* Ignore anonymous ivars. */
if (DECL_NAME (ivar_being_checked) == NULL_TREE)
continue;
 
/* Note how we stop when we find the ivar we are checking
(this can only happen in the main class, not
superclasses), to avoid comparing things twice
(otherwise, for each ivar, you'd compare A to B then B
to A, and get duplicated error messages). */
for (decl = CLASS_RAW_IVARS (interface);
decl && decl != ivar_being_checked;
decl = DECL_CHAIN (decl))
{
if (DECL_NAME (ivar_being_checked) == DECL_NAME (decl))
{
error_at (DECL_SOURCE_LOCATION (ivar_being_checked),
"duplicate instance variable %q+D",
ivar_being_checked);
inform (DECL_SOURCE_LOCATION (decl),
"previous declaration of %q+D",
decl);
/* FIXME: Do we need the following ? */
/* DECL_NAME (ivar_being_checked) = NULL_TREE; */
}
}
}
}
}
return true;
}
 
/* Used by: build_private_template, continue_class,
and for @defs constructs. */
 
static tree
get_class_ivars (tree interface, bool inherited)
{
tree ivar_chain = copy_list (CLASS_RAW_IVARS (interface));
 
/* Both CLASS_RAW_IVARS and CLASS_IVARS contain a list of ivars declared
by the current class (i.e., they do not include super-class ivars).
However, the CLASS_IVARS list will be side-effected by a call to
finish_struct(), which will fill in field offsets. */
if (!CLASS_IVARS (interface))
CLASS_IVARS (interface) = ivar_chain;
 
if (!inherited)
return ivar_chain;
 
while (CLASS_SUPER_NAME (interface))
{
/* Prepend super-class ivars. */
interface = lookup_interface (CLASS_SUPER_NAME (interface));
ivar_chain = chainon (copy_list (CLASS_RAW_IVARS (interface)),
ivar_chain);
}
 
return ivar_chain;
}
 
void
objc_maybe_warn_exceptions (location_t loc)
{
/* -fobjc-exceptions is required to enable Objective-C exceptions.
For example, on Darwin, ObjC exceptions require a sufficiently
recent version of the runtime, so the user must ask for them
explicitly. On other platforms, at the moment -fobjc-exceptions
triggers -fexceptions which again is required for exceptions to
work. */
if (!flag_objc_exceptions)
{
/* Warn only once per compilation unit. */
static bool warned = false;
 
if (!warned)
{
error_at (loc, "%<-fobjc-exceptions%> is required to enable Objective-C exception syntax");
warned = true;
}
}
}
 
static struct objc_try_context *cur_try_context;
 
/* Called just after parsing the @try and its associated BODY. We now
must prepare for the tricky bits -- handling the catches and finally. */
 
void
objc_begin_try_stmt (location_t try_locus, tree body)
{
struct objc_try_context *c = XCNEW (struct objc_try_context);
c->outer = cur_try_context;
c->try_body = body;
c->try_locus = try_locus;
c->end_try_locus = input_location;
cur_try_context = c;
 
/* Collect the list of local variables. We'll mark them as volatile
at the end of compilation of this function to prevent them being
clobbered by setjmp/longjmp. */
if (flag_objc_sjlj_exceptions)
objc_mark_locals_volatile (NULL);
}
 
/* Called just after parsing "@catch (parm)". Open a binding level,
enter DECL into the binding level, and initialize it. Leave the
binding level open while the body of the compound statement is
parsed. If DECL is NULL_TREE, then we are compiling "@catch(...)"
which we compile as "@catch(id tmp_variable)". */
 
void
objc_begin_catch_clause (tree decl)
{
tree compound, type, t;
bool ellipsis = false;
 
/* Begin a new scope that the entire catch clause will live in. */
compound = c_begin_compound_stmt (true);
 
/* Create the appropriate declaration for the argument. */
if (decl == error_mark_node)
type = error_mark_node;
else
{
if (decl == NULL_TREE)
{
/* If @catch(...) was specified, create a temporary variable of
type 'id' and use it. */
decl = objc_create_temporary_var (objc_object_type, "__objc_generic_catch_var");
DECL_SOURCE_LOCATION (decl) = input_location;
/* ... but allow the runtime to differentiate between ellipsis and the
case of @catch (id xyz). */
ellipsis = true;
}
else
{
/* The parser passed in a PARM_DECL, but what we really want is a VAR_DECL. */
decl = build_decl (input_location,
VAR_DECL, DECL_NAME (decl), TREE_TYPE (decl));
}
lang_hooks.decls.pushdecl (decl);
 
/* Mark the declaration as used so you never any warnings whether
you use the exception argument or not. TODO: Implement a
-Wunused-exception-parameter flag, which would cause warnings
if exception parameter is not used. */
TREE_USED (decl) = 1;
DECL_READ_P (decl) = 1;
 
type = TREE_TYPE (decl);
}
 
/* Verify that the type of the catch is valid. It must be a pointer
to an Objective-C class, or "id" (which is catch-all). */
if (type == error_mark_node)
{
;/* Just keep going. */
}
else if (!objc_type_valid_for_messaging (type, false))
{
error ("@catch parameter is not a known Objective-C class type");
type = error_mark_node;
}
else if (TYPE_HAS_OBJC_INFO (TREE_TYPE (type))
&& TYPE_OBJC_PROTOCOL_LIST (TREE_TYPE (type)))
{
error ("@catch parameter can not be protocol-qualified");
type = error_mark_node;
}
else if (POINTER_TYPE_P (type) && objc_is_object_id (TREE_TYPE (type)))
/* @catch (id xyz) or @catch (...) but we note this for runtimes that
identify 'id'. */
;
else
{
/* If 'type' was built using typedefs, we need to get rid of
them and get a simple pointer to the class. */
bool is_typedef = false;
tree x = TYPE_MAIN_VARIANT (type);
 
/* Skip from the pointer to the pointee. */
if (TREE_CODE (x) == POINTER_TYPE)
x = TREE_TYPE (x);
 
/* Traverse typedef aliases */
while (TREE_CODE (x) == RECORD_TYPE && OBJC_TYPE_NAME (x)
&& TREE_CODE (OBJC_TYPE_NAME (x)) == TYPE_DECL
&& DECL_ORIGINAL_TYPE (OBJC_TYPE_NAME (x)))
{
is_typedef = true;
x = DECL_ORIGINAL_TYPE (OBJC_TYPE_NAME (x));
}
 
/* If it was a typedef, build a pointer to the final, original
class. */
if (is_typedef)
type = build_pointer_type (x);
 
if (cur_try_context->catch_list)
{
/* Examine previous @catch clauses and see if we've already
caught the type in question. */
tree_stmt_iterator i = tsi_start (cur_try_context->catch_list);
for (; !tsi_end_p (i); tsi_next (&i))
{
tree stmt = tsi_stmt (i);
t = CATCH_TYPES (stmt);
if (t == error_mark_node)
continue;
if (!t || DERIVED_FROM_P (TREE_TYPE (t), TREE_TYPE (type)))
{
warning (0, "exception of type %<%T%> will be caught",
TREE_TYPE (type));
warning_at (EXPR_LOCATION (stmt), 0, " by earlier handler for %<%T%>",
TREE_TYPE (t ? t : objc_object_type));
break;
}
}
}
}
 
t = (*runtime.begin_catch) (&cur_try_context, type, decl, compound, ellipsis);
add_stmt (t);
}
 
/* Called just after parsing the closing brace of a @catch clause. Close
the open binding level, and record a CATCH_EXPR for it. */
 
void
objc_finish_catch_clause (void)
{
tree c = cur_try_context->current_catch;
cur_try_context->current_catch = NULL;
cur_try_context->end_catch_locus = input_location;
 
CATCH_BODY (c) = c_end_compound_stmt (input_location, CATCH_BODY (c), 1);
 
(*runtime.finish_catch) (&cur_try_context, c);
}
 
/* Called after parsing a @finally clause and its associated BODY.
Record the body for later placement. */
 
void
objc_build_finally_clause (location_t finally_locus, tree body)
{
cur_try_context->finally_body = body;
cur_try_context->finally_locus = finally_locus;
cur_try_context->end_finally_locus = input_location;
}
 
/* Called to finalize a @try construct. */
 
tree
objc_finish_try_stmt (void)
{
struct objc_try_context *c = cur_try_context;
tree stmt;
 
if (c->catch_list == NULL && c->finally_body == NULL)
error ("%<@try%> without %<@catch%> or %<@finally%>");
 
stmt = (*runtime.finish_try_stmt) (&cur_try_context);
add_stmt (stmt);
 
cur_try_context = c->outer;
free (c);
return stmt;
}
 
tree
objc_build_throw_stmt (location_t loc, tree throw_expr)
{
bool rethrown = false;
 
objc_maybe_warn_exceptions (loc);
 
/* Don't waste time trying to build something if we're already dead. */
if (throw_expr == error_mark_node)
return error_mark_node;
 
if (throw_expr == NULL)
{
/* If we're not inside a @catch block, there is no "current
exception" to be rethrown. */
if (cur_try_context == NULL
|| cur_try_context->current_catch == NULL)
{
error_at (loc, "%<@throw%> (rethrow) used outside of a @catch block");
return error_mark_node;
}
 
/* Otherwise the object is still sitting in the EXC_PTR_EXPR
value that we get from the runtime. */
throw_expr = (*runtime.build_exc_ptr) (&cur_try_context);
rethrown = true;
}
else
{
if (!objc_type_valid_for_messaging (TREE_TYPE (throw_expr), true))
{
error_at (loc, "%<@throw%> argument is not an object");
return error_mark_node;
}
}
 
return (*runtime.build_throw_stmt) (loc, throw_expr, rethrown);
}
 
tree
objc_build_synchronized (location_t start_locus, tree object_expr, tree body)
{
/* object_expr should never be NULL; but in case it is, convert it to
error_mark_node. */
if (object_expr == NULL)
object_expr = error_mark_node;
 
/* Validate object_expr. If not valid, set it to error_mark_node. */
if (object_expr != error_mark_node)
{
if (!objc_type_valid_for_messaging (TREE_TYPE (object_expr), true))
{
error_at (start_locus, "%<@synchronized%> argument is not an object");
object_expr = error_mark_node;
}
}
 
if (object_expr == error_mark_node)
{
/* If we found an error, we simply ignore the '@synchronized'.
Compile the body so we can keep going with minimal
casualties. */
return add_stmt (body);
}
else
{
tree call;
tree args;
 
/* objc_sync_enter (object_expr); */
object_expr = save_expr (object_expr);
args = tree_cons (NULL, object_expr, NULL);
call = build_function_call (input_location,
objc_sync_enter_decl, args);
SET_EXPR_LOCATION (call, start_locus);
add_stmt (call);
 
/* Build "objc_sync_exit (object_expr);" but do not add it yet;
it goes inside the @finalize() clause. */
args = tree_cons (NULL, object_expr, NULL);
call = build_function_call (input_location,
objc_sync_exit_decl, args);
SET_EXPR_LOCATION (call, input_location);
 
/* @try { body; } */
objc_begin_try_stmt (start_locus, body);
 
/* @finally { objc_sync_exit (object_expr); } */
objc_build_finally_clause (input_location, call);
 
/* End of try statement. */
return objc_finish_try_stmt ();
}
}
 
/* Construct a C struct corresponding to ObjC class CLASS, with the same
name as the class:
 
struct <classname> {
struct _objc_class *isa;
...
}; */
 
static void
build_private_template (tree klass)
{
if (!CLASS_STATIC_TEMPLATE (klass))
{
tree record = objc_build_struct (klass,
get_class_ivars (klass, false),
CLASS_SUPER_NAME (klass));
 
/* Set the TREE_USED bit for this struct, so that stab generator
can emit stabs for this struct type. */
if (flag_debug_only_used_symbols && TYPE_STUB_DECL (record))
TREE_USED (TYPE_STUB_DECL (record)) = 1;
 
/* Copy the attributes from the class to the type. */
if (TREE_DEPRECATED (klass))
TREE_DEPRECATED (record) = 1;
}
}
 
/* Generate either '- .cxx_construct' or '- .cxx_destruct' for the
current class. */
#ifdef OBJCPLUS
static void
objc_generate_cxx_ctor_or_dtor (bool dtor)
{
tree fn, body, compound_stmt, ivar;
 
/* - (id) .cxx_construct { ... return self; } */
/* - (void) .cxx_construct { ... } */
 
objc_start_method_definition
(false /* is_class_method */,
objc_build_method_signature (false /* is_class_method */,
build_tree_list (NULL_TREE,
dtor
? void_type_node
: objc_object_type),
get_identifier (dtor
? TAG_CXX_DESTRUCT
: TAG_CXX_CONSTRUCT),
make_node (TREE_LIST),
false), NULL, NULL_TREE);
body = begin_function_body ();
compound_stmt = begin_compound_stmt (0);
 
ivar = CLASS_IVARS (implementation_template);
/* Destroy ivars in reverse order. */
if (dtor)
ivar = nreverse (copy_list (ivar));
 
for (; ivar; ivar = TREE_CHAIN (ivar))
{
if (TREE_CODE (ivar) == FIELD_DECL)
{
tree type = TREE_TYPE (ivar);
 
/* Call the ivar's default constructor or destructor. Do not
call the destructor unless a corresponding constructor call
has also been made (or is not needed). */
if (MAYBE_CLASS_TYPE_P (type)
&& (dtor
? (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type)
&& (!TYPE_NEEDS_CONSTRUCTING (type)
|| TYPE_HAS_DEFAULT_CONSTRUCTOR (type)))
: (TYPE_NEEDS_CONSTRUCTING (type)
&& TYPE_HAS_DEFAULT_CONSTRUCTOR (type))))
finish_expr_stmt
(build_special_member_call
(build_ivar_reference (DECL_NAME (ivar)),
dtor ? complete_dtor_identifier : complete_ctor_identifier,
NULL, type, LOOKUP_NORMAL, tf_warning_or_error));
}
}
 
/* The constructor returns 'self'. */
if (!dtor)
finish_return_stmt (self_decl);
 
finish_compound_stmt (compound_stmt);
finish_function_body (body);
fn = current_function_decl;
finish_function ();
objc_finish_method_definition (fn);
}
 
/* The following routine will examine the current @interface for any
non-POD C++ ivars requiring non-trivial construction and/or
destruction, and then synthesize special '- .cxx_construct' and/or
'- .cxx_destruct' methods which will run the appropriate
construction or destruction code. Note that ivars inherited from
super-classes are _not_ considered. */
static void
objc_generate_cxx_cdtors (void)
{
bool need_ctor = false, need_dtor = false;
tree ivar;
 
/* Error case, due to possibly an extra @end. */
if (!objc_implementation_context)
return;
 
/* We do not want to do this for categories, since they do not have
their own ivars. */
 
if (TREE_CODE (objc_implementation_context) != CLASS_IMPLEMENTATION_TYPE)
return;
 
/* First, determine if we even need a constructor and/or destructor. */
 
for (ivar = CLASS_IVARS (implementation_template); ivar;
ivar = TREE_CHAIN (ivar))
{
if (TREE_CODE (ivar) == FIELD_DECL)
{
tree type = TREE_TYPE (ivar);
 
if (MAYBE_CLASS_TYPE_P (type))
{
if (TYPE_NEEDS_CONSTRUCTING (type)
&& TYPE_HAS_DEFAULT_CONSTRUCTOR (type))
/* NB: If a default constructor is not available, we will not
be able to initialize this ivar; the add_instance_variable()
routine will already have warned about this. */
need_ctor = true;
 
if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type)
&& (!TYPE_NEEDS_CONSTRUCTING (type)
|| TYPE_HAS_DEFAULT_CONSTRUCTOR (type)))
/* NB: If a default constructor is not available, we will not
call the destructor either, for symmetry. */
need_dtor = true;
}
}
}
 
/* Generate '- .cxx_construct' if needed. */
 
if (need_ctor)
objc_generate_cxx_ctor_or_dtor (false);
 
/* Generate '- .cxx_destruct' if needed. */
 
if (need_dtor)
objc_generate_cxx_ctor_or_dtor (true);
 
/* The 'imp_list' variable points at an imp_entry record for the current
@implementation. Record the existence of '- .cxx_construct' and/or
'- .cxx_destruct' methods therein; it will be included in the
metadata for the class if the runtime needs it. */
imp_list->has_cxx_cdtors = (need_ctor || need_dtor);
}
#endif
 
static void
error_with_ivar (const char *message, tree decl)
{
error_at (DECL_SOURCE_LOCATION (decl), "%s %qs",
message, identifier_to_locale (gen_declaration (decl)));
 
}
 
static void
check_ivars (tree inter, tree imp)
{
tree intdecls = CLASS_RAW_IVARS (inter);
tree impdecls = CLASS_RAW_IVARS (imp);
 
while (1)
{
tree t1, t2;
 
#ifdef OBJCPLUS
if (intdecls && TREE_CODE (intdecls) == TYPE_DECL)
intdecls = TREE_CHAIN (intdecls);
#endif
if (intdecls == 0 && impdecls == 0)
break;
if (intdecls == 0 || impdecls == 0)
{
error ("inconsistent instance variable specification");
break;
}
 
t1 = TREE_TYPE (intdecls); t2 = TREE_TYPE (impdecls);
 
if (!comptypes (t1, t2)
|| !tree_int_cst_equal (DECL_INITIAL (intdecls),
DECL_INITIAL (impdecls)))
{
if (DECL_NAME (intdecls) == DECL_NAME (impdecls))
{
error_with_ivar ("conflicting instance variable type",
impdecls);
error_with_ivar ("previous declaration of",
intdecls);
}
else /* both the type and the name don't match */
{
error ("inconsistent instance variable specification");
break;
}
}
 
else if (DECL_NAME (intdecls) != DECL_NAME (impdecls))
{
error_with_ivar ("conflicting instance variable name",
impdecls);
error_with_ivar ("previous declaration of",
intdecls);
}
 
intdecls = DECL_CHAIN (intdecls);
impdecls = DECL_CHAIN (impdecls);
}
}
 
 
static void
mark_referenced_methods (void)
{
struct imp_entry *impent;
tree chain;
 
for (impent = imp_list; impent; impent = impent->next)
{
chain = CLASS_CLS_METHODS (impent->imp_context);
while (chain)
{
cgraph_mark_needed_node (
cgraph_get_create_node (METHOD_DEFINITION (chain)));
chain = DECL_CHAIN (chain);
}
 
chain = CLASS_NST_METHODS (impent->imp_context);
while (chain)
{
cgraph_mark_needed_node (
cgraph_get_create_node (METHOD_DEFINITION (chain)));
chain = DECL_CHAIN (chain);
}
}
}
 
/* If type is empty or only type qualifiers are present, add default
type of id (otherwise grokdeclarator will default to int). */
static inline tree
adjust_type_for_id_default (tree type)
{
if (!type)
type = make_node (TREE_LIST);
 
if (!TREE_VALUE (type))
TREE_VALUE (type) = objc_object_type;
else if (TREE_CODE (TREE_VALUE (type)) == RECORD_TYPE
&& TYPED_OBJECT (TREE_VALUE (type)))
error ("can not use an object as parameter to a method");
 
return type;
}
 
/* Return a KEYWORD_DECL built using the specified key_name, arg_type,
arg_name and attributes. (TODO: Rename KEYWORD_DECL to
OBJC_METHOD_PARM_DECL ?)
 
A KEYWORD_DECL is a tree representing the declaration of a
parameter of an Objective-C method. It is produced when parsing a
fragment of Objective-C method declaration of the form
 
keyworddecl:
selector ':' '(' typename ')' identifier
 
For example, take the Objective-C method
 
-(NSString *)pathForResource:(NSString *)resource ofType:(NSString *)type;
 
the two fragments "pathForResource:(NSString *)resource" and
"ofType:(NSString *)type" will generate a KEYWORD_DECL each. The
KEYWORD_DECL stores the 'key_name' (eg, identifier for
"pathForResource"), the 'arg_type' (eg, tree representing a
NSString *), the 'arg_name' (eg identifier for "resource") and
potentially some attributes (for example, a tree representing
__attribute__ ((unused)) if such an attribute was attached to a
certain parameter). You can access this information using the
TREE_TYPE (for arg_type), KEYWORD_ARG_NAME (for arg_name),
KEYWORD_KEY_NAME (for key_name), DECL_ATTRIBUTES (for attributes).
 
'key_name' is an identifier node (and is optional as you can omit
it in Objective-C methods).
'arg_type' is a tree list (and is optional too if no parameter type
was specified).
'arg_name' is an identifier node and is required.
'attributes' is an optional tree containing parameter attributes. */
tree
objc_build_keyword_decl (tree key_name, tree arg_type,
tree arg_name, tree attributes)
{
tree keyword_decl;
 
if (flag_objc1_only && attributes)
error_at (input_location, "method argument attributes are not available in Objective-C 1.0");
 
/* If no type is specified, default to "id". */
arg_type = adjust_type_for_id_default (arg_type);
 
keyword_decl = make_node (KEYWORD_DECL);
 
TREE_TYPE (keyword_decl) = arg_type;
KEYWORD_ARG_NAME (keyword_decl) = arg_name;
KEYWORD_KEY_NAME (keyword_decl) = key_name;
DECL_ATTRIBUTES (keyword_decl) = attributes;
 
return keyword_decl;
}
 
/* Given a chain of keyword_decl's, synthesize the full keyword selector. */
static tree
build_keyword_selector (tree selector)
{
int len = 0;
tree key_chain, key_name;
char *buf;
 
/* Scan the selector to see how much space we'll need. */
for (key_chain = selector; key_chain; key_chain = TREE_CHAIN (key_chain))
{
switch (TREE_CODE (selector))
{
case KEYWORD_DECL:
key_name = KEYWORD_KEY_NAME (key_chain);
break;
case TREE_LIST:
key_name = TREE_PURPOSE (key_chain);
break;
default:
gcc_unreachable ();
}
 
if (key_name)
len += IDENTIFIER_LENGTH (key_name) + 1;
else
/* Just a ':' arg. */
len++;
}
 
buf = (char *) alloca (len + 1);
/* Start the buffer out as an empty string. */
buf[0] = '\0';
 
for (key_chain = selector; key_chain; key_chain = TREE_CHAIN (key_chain))
{
switch (TREE_CODE (selector))
{
case KEYWORD_DECL:
key_name = KEYWORD_KEY_NAME (key_chain);
break;
case TREE_LIST:
key_name = TREE_PURPOSE (key_chain);
/* The keyword decl chain will later be used as a function
argument chain. Unhook the selector itself so as to not
confuse other parts of the compiler. */
TREE_PURPOSE (key_chain) = NULL_TREE;
break;
default:
gcc_unreachable ();
}
 
if (key_name)
strcat (buf, IDENTIFIER_POINTER (key_name));
strcat (buf, ":");
}
 
return get_identifier_with_length (buf, len);
}
 
/* Used for declarations and definitions. */
 
static tree
build_method_decl (enum tree_code code, tree ret_type, tree selector,
tree add_args, bool ellipsis)
{
tree method_decl;
 
/* If no type is specified, default to "id". */
ret_type = adjust_type_for_id_default (ret_type);
 
/* Note how a method_decl has a TREE_TYPE which is not the function
type of the function implementing the method, but only the return
type of the method. We may want to change this, and store the
entire function type in there (eg, it may be used to simplify
dealing with attributes below). */
method_decl = make_node (code);
TREE_TYPE (method_decl) = ret_type;
 
/* If we have a keyword selector, create an identifier_node that
represents the full selector name (`:' included)... */
if (TREE_CODE (selector) == KEYWORD_DECL)
{
METHOD_SEL_NAME (method_decl) = build_keyword_selector (selector);
METHOD_SEL_ARGS (method_decl) = selector;
METHOD_ADD_ARGS (method_decl) = add_args;
METHOD_ADD_ARGS_ELLIPSIS_P (method_decl) = ellipsis;
}
else
{
METHOD_SEL_NAME (method_decl) = selector;
METHOD_SEL_ARGS (method_decl) = NULL_TREE;
METHOD_ADD_ARGS (method_decl) = NULL_TREE;
}
 
return method_decl;
}
 
/* This routine processes objective-c method attributes. */
 
static void
objc_decl_method_attributes (tree *node, tree attributes, int flags)
{
/* TODO: Replace the hackery below. An idea would be to store the
full function type in the method declaration (for example in
TREE_TYPE) and then expose ObjC method declarations to c-family
and they could deal with them by simply treating them as
functions. */
 
/* Because of the dangers in the hackery below, we filter out any
attribute that we do not know about. For the ones we know about,
we know that they work with the hackery. For the other ones,
there is no guarantee, so we have to filter them out. */
tree filtered_attributes = NULL_TREE;
 
if (attributes)
{
tree attribute;
for (attribute = attributes; attribute; attribute = TREE_CHAIN (attribute))
{
tree name = TREE_PURPOSE (attribute);
 
if (is_attribute_p ("deprecated", name)
|| is_attribute_p ("sentinel", name)
|| is_attribute_p ("noreturn", name))
{
/* An attribute that we support; add it to the filtered
attributes. */
filtered_attributes = chainon (filtered_attributes,
copy_node (attribute));
}
else if (is_attribute_p ("format", name))
{
/* "format" is special because before adding it to the
filtered attributes we need to adjust the specified
format by adding the hidden function parameters for
an Objective-C method (self, _cmd). */
tree new_attribute = copy_node (attribute);
 
/* Check the arguments specified with the attribute, and
modify them adding 2 for the two hidden arguments.
Note how this differs from C++; according to the
specs, C++ does not do it so you have to add the +1
yourself. For Objective-C, instead, the compiler
adds the +2 for you. */
 
/* The attribute arguments have not been checked yet, so
we need to be careful as they could be missing or
invalid. If anything looks wrong, we skip the
process and the compiler will complain about it later
when it validates the attribute. */
/* Check that we have at least three arguments. */
if (TREE_VALUE (new_attribute)
&& TREE_CHAIN (TREE_VALUE (new_attribute))
&& TREE_CHAIN (TREE_CHAIN (TREE_VALUE (new_attribute))))
{
tree second_argument = TREE_CHAIN (TREE_VALUE (new_attribute));
tree third_argument = TREE_CHAIN (second_argument);
tree number;
 
/* This is the second argument, the "string-index",
which specifies the index of the format string
argument. Add 2. */
number = TREE_VALUE (second_argument);
if (number
&& TREE_CODE (number) == INTEGER_CST
&& TREE_INT_CST_HIGH (number) == 0)
{
TREE_VALUE (second_argument)
= build_int_cst (integer_type_node,
TREE_INT_CST_LOW (number) + 2);
}
 
/* This is the third argument, the "first-to-check",
which specifies the index of the first argument to
check. This could be 0, meaning it is not available,
in which case we don't need to add 2. Add 2 if not
0. */
number = TREE_VALUE (third_argument);
if (number
&& TREE_CODE (number) == INTEGER_CST
&& TREE_INT_CST_HIGH (number) == 0
&& TREE_INT_CST_LOW (number) != 0)
{
TREE_VALUE (third_argument)
= build_int_cst (integer_type_node,
TREE_INT_CST_LOW (number) + 2);
}
}
filtered_attributes = chainon (filtered_attributes,
new_attribute);
}
else if (is_attribute_p ("nonnull", name))
{
/* We need to fixup all the argument indexes by adding 2
for the two hidden arguments of an Objective-C method
invocation, similat to what we do above for the
"format" attribute. */
/* FIXME: This works great in terms of implementing the
functionality, but the warnings that are produced by
nonnull do mention the argument index (while the
format ones don't). For example, you could get
"warning: null argument where non-null required
(argument 3)". Now in that message, "argument 3"
includes the 2 hidden arguments; it would be much
more friendly to call it "argument 1", as that would
be consistent with __attribute__ ((nonnnull (1))).
To do this, we'd need to have the C family code that
checks the arguments know about adding/removing 2 to
the argument index ... or alternatively we could
maybe store the "printable" argument index in
addition to the actual argument index ? Some
refactoring is needed to do this elegantly. */
tree new_attribute = copy_node (attribute);
tree argument = TREE_VALUE (attribute);
while (argument != NULL_TREE)
{
/* Get the value of the argument and add 2. */
tree number = TREE_VALUE (argument);
if (number
&& TREE_CODE (number) == INTEGER_CST
&& TREE_INT_CST_HIGH (number) == 0
&& TREE_INT_CST_LOW (number) != 0)
{
TREE_VALUE (argument)
= build_int_cst (integer_type_node,
TREE_INT_CST_LOW (number) + 2);
}
argument = TREE_CHAIN (argument);
}
 
filtered_attributes = chainon (filtered_attributes,
new_attribute);
}
else
warning (OPT_Wattributes, "%qE attribute directive ignored", name);
}
}
 
if (filtered_attributes)
{
/* This hackery changes the TREE_TYPE of the ObjC method
declaration to be a function type, so that decl_attributes
will treat the ObjC method as if it was a function. Some
attributes (sentinel, format) will be applied to the function
type, changing it in place; so after calling decl_attributes,
we extract the function type attributes and store them in
METHOD_TYPE_ATTRIBUTES. Some other attributes (noreturn,
deprecated) are applied directly to the method declaration
(by setting TREE_DEPRECATED and TREE_THIS_VOLATILE) so there
is nothing to do. */
tree saved_type = TREE_TYPE (*node);
TREE_TYPE (*node)
= build_function_type_for_method (TREE_VALUE (saved_type), *node,
METHOD_REF, 0);
decl_attributes (node, filtered_attributes, flags);
METHOD_TYPE_ATTRIBUTES (*node) = TYPE_ATTRIBUTES (TREE_TYPE (*node));
TREE_TYPE (*node) = saved_type;
}
}
 
bool
objc_method_decl (enum tree_code opcode)
{
return opcode == INSTANCE_METHOD_DECL || opcode == CLASS_METHOD_DECL;
}
 
/* Return a function type for METHOD with RETURN_TYPE. CONTEXT is
either METHOD_DEF or METHOD_REF, indicating whether we are defining a
method or calling one. SUPER_FLAG indicates whether this is a send
to super; this makes a difference for the NeXT calling sequence in
which the lookup and the method call are done together. If METHOD is
NULL, user-defined arguments (i.e., beyond self and _cmd) shall be
represented as varargs. */
 
tree
build_function_type_for_method (tree return_type, tree method,
int context, bool super_flag)
{
VEC(tree,gc) *argtypes = make_tree_vector ();
tree t, ftype;
bool is_varargs = false;
 
(*runtime.get_arg_type_list_base) (&argtypes, method, context, super_flag);
 
/* No actual method prototype given; remaining args passed as varargs. */
if (method == NULL_TREE)
{
is_varargs = true;
goto build_ftype;
}
 
for (t = METHOD_SEL_ARGS (method); t; t = DECL_CHAIN (t))
{
tree arg_type = TREE_VALUE (TREE_TYPE (t));
 
/* Decay argument types for the underlying C function as
appropriate. */
arg_type = objc_decay_parm_type (arg_type);
 
VEC_safe_push (tree, gc, argtypes, arg_type);
}
 
if (METHOD_ADD_ARGS (method))
{
for (t = TREE_CHAIN (METHOD_ADD_ARGS (method));
t; t = TREE_CHAIN (t))
{
tree arg_type = TREE_TYPE (TREE_VALUE (t));
 
arg_type = objc_decay_parm_type (arg_type);
 
VEC_safe_push (tree, gc, argtypes, arg_type);
}
 
if (METHOD_ADD_ARGS_ELLIPSIS_P (method))
is_varargs = true;
}
 
build_ftype:
if (is_varargs)
ftype = build_varargs_function_type_vec (return_type, argtypes);
else
ftype = build_function_type_vec (return_type, argtypes);
 
release_tree_vector (argtypes);
return ftype;
}
 
/* The 'method' argument is a tree; this tree could either be a single
method, which is returned, or could be a TREE_VEC containing a list
of methods. In that case, the first one is returned, and warnings
are issued as appropriate. */
static tree
check_duplicates (tree method, int methods, int is_class)
{
tree first_method;
size_t i;
 
if (method == NULL_TREE)
return NULL_TREE;
 
if (TREE_CODE (method) != TREE_VEC)
return method;
 
/* We have two or more methods with the same name but different
types. */
first_method = TREE_VEC_ELT (method, 0);
/* But just how different are those types? If
-Wno-strict-selector-match is specified, we shall not complain if
the differences are solely among types with identical size and
alignment. */
if (!warn_strict_selector_match)
{
for (i = 0; i < (size_t) TREE_VEC_LENGTH (method); i++)
if (!comp_proto_with_proto (first_method, TREE_VEC_ELT (method, i), 0))
goto issue_warning;
return first_method;
}
issue_warning:
if (methods)
{
bool type = TREE_CODE (first_method) == INSTANCE_METHOD_DECL;
warning_at (input_location, 0,
"multiple methods named %<%c%E%> found",
(is_class ? '+' : '-'),
METHOD_SEL_NAME (first_method));
inform (DECL_SOURCE_LOCATION (first_method), "using %<%c%s%>",
(type ? '-' : '+'),
identifier_to_locale (gen_method_decl (first_method)));
}
else
{
bool type = TREE_CODE (first_method) == INSTANCE_METHOD_DECL;
warning_at (input_location, 0,
"multiple selectors named %<%c%E%> found",
(is_class ? '+' : '-'),
METHOD_SEL_NAME (first_method));
inform (DECL_SOURCE_LOCATION (first_method), "found %<%c%s%>",
(type ? '-' : '+'),
identifier_to_locale (gen_method_decl (first_method)));
}
for (i = 0; i < (size_t) TREE_VEC_LENGTH (method); i++)
{
bool type = TREE_CODE (TREE_VEC_ELT (method, i)) == INSTANCE_METHOD_DECL;
inform (DECL_SOURCE_LOCATION (TREE_VEC_ELT (method, i)), "also found %<%c%s%>",
(type ? '-' : '+'),
identifier_to_locale (gen_method_decl (TREE_VEC_ELT (method, i))));
}
 
return first_method;
}
 
/* If RECEIVER is a class reference, return the identifier node for
the referenced class. RECEIVER is created by objc_get_class_reference,
so we check the exact form created depending on which runtimes are
used. */
 
static tree
receiver_is_class_object (tree receiver, int self, int super)
{
tree exp, arg;
 
/* The receiver is 'self' or 'super' in the context of a class method. */
if (objc_method_context
&& TREE_CODE (objc_method_context) == CLASS_METHOD_DECL
&& (self || super))
return (super
? CLASS_SUPER_NAME (implementation_template)
: CLASS_NAME (implementation_template));
 
/* The runtime might encapsulate things its own way. */
exp = (*runtime.receiver_is_class_object) (receiver);
if (exp)
return exp;
 
/* The receiver is a function call that returns an id. Check if
it is a call to objc_getClass, if so, pick up the class name.
 
This is required by the GNU runtime, which compiles
 
[NSObject alloc]
 
into
 
[objc_get_class ("NSObject") alloc];
 
and then, to check that the receiver responds to the +alloc
method, needs to be able to determine that the objc_get_class()
call returns the NSObject class and not just a generic Class
pointer.
 
But, traditionally this is enabled for all runtimes, not just the
GNU one, which means that the compiler is smarter than you'd
expect when dealing with objc_getClass(). For example, with the
Apple runtime, in the code
 
[objc_getClass ("NSObject") alloc];
 
the compiler will recognize the objc_getClass() call as special
(due to the code below) and so will know that +alloc is called on
the 'NSObject' class, and can perform the corresponding checks.
 
Programmers can disable this behaviour by casting the results of
objc_getClass() to 'Class' (this may seem weird because
objc_getClass() is already declared to return 'Class', but the
compiler treats it as a special function). This may be useful if
the class is never declared, and the compiler would complain
about a missing @interface for it. Then, you can do
 
[(Class)objc_getClass ("MyClassNeverDeclared") alloc];
 
to silence the warnings. */
if (TREE_CODE (receiver) == CALL_EXPR
&& (exp = CALL_EXPR_FN (receiver))
&& TREE_CODE (exp) == ADDR_EXPR
&& (exp = TREE_OPERAND (exp, 0))
&& TREE_CODE (exp) == FUNCTION_DECL
/* For some reason, we sometimes wind up with multiple FUNCTION_DECL
prototypes for objc_get_class(). Thankfully, they seem to share the
same function type. */
&& TREE_TYPE (exp) == TREE_TYPE (objc_get_class_decl)
&& !strcmp (IDENTIFIER_POINTER (DECL_NAME (exp)), runtime.tag_getclass)
/* We have a call to objc_get_class/objc_getClass! */
&& (arg = CALL_EXPR_ARG (receiver, 0)))
{
STRIP_NOPS (arg);
if (TREE_CODE (arg) == ADDR_EXPR
&& (arg = TREE_OPERAND (arg, 0))
&& TREE_CODE (arg) == STRING_CST)
/* Finally, we have the class name. */
return get_identifier (TREE_STRING_POINTER (arg));
}
return 0;
}
 
/* If we are currently building a message expr, this holds
the identifier of the selector of the message. This is
used when printing warnings about argument mismatches. */
 
static tree current_objc_message_selector = 0;
 
tree
objc_message_selector (void)
{
return current_objc_message_selector;
}
 
/* Construct an expression for sending a message.
MESS has the object to send to in TREE_PURPOSE
and the argument list (including selector) in TREE_VALUE.
 
(*(<abstract_decl>(*)())_msg)(receiver, selTransTbl[n], ...);
(*(<abstract_decl>(*)())_msgSuper)(receiver, selTransTbl[n], ...); */
 
tree
objc_build_message_expr (tree receiver, tree message_args)
{
tree sel_name;
#ifdef OBJCPLUS
tree args = TREE_PURPOSE (message_args);
#else
tree args = message_args;
#endif
tree method_params = NULL_TREE;
 
if (TREE_CODE (receiver) == ERROR_MARK || TREE_CODE (args) == ERROR_MARK)
return error_mark_node;
 
/* Obtain the full selector name. */
switch (TREE_CODE (args))
{
case IDENTIFIER_NODE:
/* A unary selector. */
sel_name = args;
break;
case TREE_LIST:
sel_name = build_keyword_selector (args);
break;
default:
gcc_unreachable ();
}
 
/* Build the parameter list to give to the method. */
if (TREE_CODE (args) == TREE_LIST)
#ifdef OBJCPLUS
method_params = chainon (args, TREE_VALUE (message_args));
#else
{
tree chain = args, prev = NULL_TREE;
 
/* We have a keyword selector--check for comma expressions. */
while (chain)
{
tree element = TREE_VALUE (chain);
 
/* We have a comma expression, must collapse... */
if (TREE_CODE (element) == TREE_LIST)
{
if (prev)
TREE_CHAIN (prev) = element;
else
args = element;
}
prev = chain;
chain = TREE_CHAIN (chain);
}
method_params = args;
}
#endif
 
#ifdef OBJCPLUS
if (processing_template_decl)
/* Must wait until template instantiation time. */
return build_min_nt (MESSAGE_SEND_EXPR, receiver, sel_name,
method_params);
#endif
 
return objc_finish_message_expr (receiver, sel_name, method_params, NULL);
}
 
/* Look up method SEL_NAME that would be suitable for receiver
of type 'id' (if IS_CLASS is zero) or 'Class' (if IS_CLASS is
nonzero), and report on any duplicates. */
 
static tree
lookup_method_in_hash_lists (tree sel_name, int is_class)
{
tree method_prototype = OBJC_MAP_NOT_FOUND;
 
if (!is_class)
method_prototype = objc_map_get (instance_method_map, sel_name);
if (method_prototype == OBJC_MAP_NOT_FOUND)
{
method_prototype = objc_map_get (class_method_map, sel_name);
is_class = 1;
 
if (method_prototype == OBJC_MAP_NOT_FOUND)
return NULL_TREE;
}
 
return check_duplicates (method_prototype, 1, is_class);
}
 
/* The 'objc_finish_message_expr' routine is called from within
'objc_build_message_expr' for non-template functions. In the case of
C++ template functions, it is called from 'build_expr_from_tree'
(in decl2.c) after RECEIVER and METHOD_PARAMS have been expanded.
 
If the DEPRECATED_METHOD_PROTOTYPE argument is NULL, then we warn
if the method being used is deprecated. If it is not NULL, instead
of deprecating, we set *DEPRECATED_METHOD_PROTOTYPE to the method
prototype that was used and is deprecated. This is useful for
getter calls that are always generated when compiling dot-syntax
expressions, even if they may not be used. In that case, we don't
want the warning immediately; we produce it (if needed) at gimplify
stage when we are sure that the deprecated getter is being
used. */
tree
objc_finish_message_expr (tree receiver, tree sel_name, tree method_params,
tree *deprecated_method_prototype)
{
tree method_prototype = NULL_TREE, rprotos = NULL_TREE, rtype;
tree retval, class_tree;
int self, super, have_cast;
 
/* We have used the receiver, so mark it as read. */
mark_exp_read (receiver);
 
/* Extract the receiver of the message, as well as its type
(where the latter may take the form of a cast or be inferred
from the implementation context). */
rtype = receiver;
while (TREE_CODE (rtype) == COMPOUND_EXPR
|| TREE_CODE (rtype) == MODIFY_EXPR
|| CONVERT_EXPR_P (rtype)
|| TREE_CODE (rtype) == COMPONENT_REF)
rtype = TREE_OPERAND (rtype, 0);
 
/* self is 1 if this is a message to self, 0 otherwise */
self = (rtype == self_decl);
 
/* super is 1 if this is a message to super, 0 otherwise. */
super = (rtype == UOBJC_SUPER_decl);
 
/* rtype is the type of the receiver. */
rtype = TREE_TYPE (receiver);
 
/* have_cast is 1 if the receiver is casted. */
have_cast = (TREE_CODE (receiver) == NOP_EXPR
|| (TREE_CODE (receiver) == COMPOUND_EXPR
&& !IS_SUPER (rtype)));
 
/* If we are calling [super dealloc], reset our warning flag. */
if (super && !strcmp ("dealloc", IDENTIFIER_POINTER (sel_name)))
should_call_super_dealloc = 0;
 
/* If the receiver is a class object, retrieve the corresponding
@interface, if one exists. class_tree is the class name
identifier, or NULL_TREE if this is not a class method or the
class name could not be determined (as in the case "Class c; [c
method];"). */
class_tree = receiver_is_class_object (receiver, self, super);
 
/* Now determine the receiver type (if an explicit cast has not been
provided). */
if (!have_cast)
{
if (class_tree)
{
/* We are here when we have no cast, and we have a class
name. So, this is a plain method to a class object, as
in [NSObject alloc]. Find the interface corresponding to
the class name. */
rtype = lookup_interface (class_tree);
 
if (rtype == NULL_TREE)
{
/* If 'rtype' is NULL_TREE at this point it means that
we have seen no @interface corresponding to that
class name, only a @class declaration (alternatively,
this was a call such as [objc_getClass("SomeClass")
alloc], where we've never seen the @interface of
SomeClass). So, we have a class name (class_tree)
but no actual details of the class methods. We won't
be able to check that the class responds to the
method, and we will have to guess the method
prototype. Emit a warning, then keep going (this
will use any method with a matching name, as if the
receiver was of type 'Class'). */
warning (0, "@interface of class %qE not found", class_tree);
}
}
/* Handle `self' and `super'. */
else if (super)
{
if (!CLASS_SUPER_NAME (implementation_template))
{
error ("no super class declared in @interface for %qE",
CLASS_NAME (implementation_template));
return error_mark_node;
}
rtype = lookup_interface (CLASS_SUPER_NAME (implementation_template));
}
else if (self)
rtype = lookup_interface (CLASS_NAME (implementation_template));
}
 
if (objc_is_id (rtype))
{
/* The receiver is of type 'id' or 'Class' (with or without some
protocols attached to it). */
 
/* We set class_tree to the identifier for 'Class' if this is a
class method, and to NULL_TREE if not. */
class_tree = (IS_CLASS (rtype) ? objc_class_name : NULL_TREE);
/* 'rprotos' is the list of protocols that the receiver
supports. */
rprotos = (TYPE_HAS_OBJC_INFO (TREE_TYPE (rtype))
? TYPE_OBJC_PROTOCOL_LIST (TREE_TYPE (rtype))
: NULL_TREE);
 
/* We have no information on the type, and we set it to
NULL_TREE. */
rtype = NULL_TREE;
 
/* If there are any protocols, check that the method we are
calling appears in the protocol list. If there are no
protocols, this is a message to 'id' or 'Class' and we accept
any method that exists. */
if (rprotos)
{
/* If messaging 'id <Protos>' or 'Class <Proto>', first
search in protocols themselves for the method
prototype. */
method_prototype
= lookup_method_in_protocol_list (rprotos, sel_name,
class_tree != NULL_TREE);
 
/* If messaging 'Class <Proto>' but did not find a class
method prototype, search for an instance method instead,
and warn about having done so. */
if (!method_prototype && !rtype && class_tree != NULL_TREE)
{
method_prototype
= lookup_method_in_protocol_list (rprotos, sel_name, 0);
 
if (method_prototype)
warning (0, "found %<-%E%> instead of %<+%E%> in protocol(s)",
sel_name, sel_name);
}
}
}
else if (rtype)
{
/* We have a receiver type which is more specific than 'id' or
'Class'. */
tree orig_rtype = rtype;
 
if (TREE_CODE (rtype) == POINTER_TYPE)
rtype = TREE_TYPE (rtype);
/* Traverse typedef aliases */
while (TREE_CODE (rtype) == RECORD_TYPE && OBJC_TYPE_NAME (rtype)
&& TREE_CODE (OBJC_TYPE_NAME (rtype)) == TYPE_DECL
&& DECL_ORIGINAL_TYPE (OBJC_TYPE_NAME (rtype)))
rtype = DECL_ORIGINAL_TYPE (OBJC_TYPE_NAME (rtype));
if (TYPED_OBJECT (rtype))
{
rprotos = TYPE_OBJC_PROTOCOL_LIST (rtype);
rtype = TYPE_OBJC_INTERFACE (rtype);
}
if (!rtype || TREE_CODE (rtype) == IDENTIFIER_NODE)
{
/* If we could not find an @interface declaration, we must
have only seen a @class declaration; so, we cannot say
anything more intelligent about which methods the
receiver will understand. Note that this only happens
for instance methods; for class methods to a class where
we have only seen a @class declaration,
lookup_interface() above would have set rtype to
NULL_TREE. */
if (rprotos)
{
/* We could not find an @interface declaration, yet, if
there are protocols attached to the type, we can
still look up the method in the protocols. Ie, we
are in the following case:
@class MyClass;
MyClass<MyProtocol> *x;
[x method];
If 'MyProtocol' has the method 'method', we can check
and retrieve the method prototype. */
method_prototype
= lookup_method_in_protocol_list (rprotos, sel_name, 0);
 
/* At this point, if we have found the method_prototype,
we are quite happy. The details of the class are
irrelevant. If we haven't found it, a warning will
have been produced that the method could not be found
in the protocol, and we won't produce further
warnings (please note that this means that "@class
MyClass; MyClass <MyProtocol> *x;" is exactly
equivalent to "id <MyProtocol> x", which isn't too
satisfactory but it's not easy to see how to do
better). */
}
else
{
if (rtype)
{
/* We could not find an @interface declaration, and
there are no protocols attached to the receiver,
so we can't complete the check that the receiver
responds to the method, and we can't retrieve the
method prototype. But, because the receiver has
a well-specified class, the programmer did want
this check to be performed. Emit a warning, then
keep going as if it was an 'id'. To remove the
warning, either include an @interface for the
class, or cast the receiver to 'id'. Note that
rtype is an IDENTIFIER_NODE at this point. */
warning (0, "@interface of class %qE not found", rtype);
}
}
 
rtype = NULL_TREE;
}
else if (TREE_CODE (rtype) == CLASS_INTERFACE_TYPE
|| TREE_CODE (rtype) == CLASS_IMPLEMENTATION_TYPE)
{
/* We have a valid ObjC class name with an associated
@interface. Look up the method name in the published
@interface for the class (and its superclasses). */
method_prototype
= lookup_method_static (rtype, sel_name, class_tree != NULL_TREE);
 
/* If the method was not found in the @interface, it may still
exist locally as part of the @implementation. */
if (!method_prototype && objc_implementation_context
&& CLASS_NAME (objc_implementation_context)
== OBJC_TYPE_NAME (rtype))
method_prototype
= lookup_method
((class_tree
? CLASS_CLS_METHODS (objc_implementation_context)
: CLASS_NST_METHODS (objc_implementation_context)),
sel_name);
 
/* If we haven't found a candidate method by now, try looking for
it in the protocol list. */
if (!method_prototype && rprotos)
method_prototype
= lookup_method_in_protocol_list (rprotos, sel_name,
class_tree != NULL_TREE);
}
else
{
/* We have a type, but it's not an Objective-C type (!). */
warning (0, "invalid receiver type %qs",
identifier_to_locale (gen_type_name (orig_rtype)));
/* After issuing the "invalid receiver" warning, perform method
lookup as if we were messaging 'id'. */
rtype = rprotos = NULL_TREE;
}
}
/* Note that rtype could also be NULL_TREE. This happens if we are
messaging a class by name, but the class was only
forward-declared using @class. */
 
/* For 'id' or 'Class' receivers, search in the global hash table as
a last resort. For all receivers, warn if protocol searches have
failed. */
if (!method_prototype)
{
if (rprotos)
warning (0, "%<%c%E%> not found in protocol(s)",
(class_tree ? '+' : '-'),
sel_name);
 
if (!rtype)
method_prototype
= lookup_method_in_hash_lists (sel_name, class_tree != NULL_TREE);
}
 
if (!method_prototype)
{
static bool warn_missing_methods = false;
 
if (rtype)
warning (0, "%qE may not respond to %<%c%E%>",
OBJC_TYPE_NAME (rtype),
(class_tree ? '+' : '-'),
sel_name);
/* If we are messaging an 'id' or 'Class' object and made it here,
then we have failed to find _any_ instance or class method,
respectively. */
else
warning (0, "no %<%c%E%> method found",
(class_tree ? '+' : '-'),
sel_name);
 
if (!warn_missing_methods)
{
warning_at (input_location,
0, "(Messages without a matching method signature");
warning_at (input_location,
0, "will be assumed to return %<id%> and accept");
warning_at (input_location,
0, "%<...%> as arguments.)");
warn_missing_methods = true;
}
}
else
{
/* Warn if the method is deprecated, but not if the receiver is
a generic 'id'. 'id' is used to cast an object to a generic
object of an unspecified class; in that case, we'll use
whatever method prototype we can find to get the method
argument and return types, but it is not appropriate to
produce deprecation warnings since we don't know the class
that the object will be of at runtime. The @interface(s) for
that class may not even be available to the compiler right
now, and it is perfectly possible that the method is marked
as non-deprecated in such @interface(s).
 
In practice this makes sense since casting an object to 'id'
is often used precisely to turn off warnings associated with
the object being of a particular class. */
if (TREE_DEPRECATED (method_prototype) && rtype != NULL_TREE)
{
if (deprecated_method_prototype)
*deprecated_method_prototype = method_prototype;
else
warn_deprecated_use (method_prototype, NULL_TREE);
}
}
 
/* Save the selector name for printing error messages. */
current_objc_message_selector = sel_name;
 
/* Build the method call.
TODO: Get the location from somewhere that will work for delayed
expansion. */
 
retval = (*runtime.build_objc_method_call) (input_location, method_prototype,
receiver, rtype, sel_name,
method_params, super);
 
current_objc_message_selector = 0;
 
return retval;
}
 
/* This routine creates a static variable used to implement @protocol(MyProtocol)
expression. This variable will be initialized to global protocol_t meta-data
pointer. */
 
/* This function is called by the parser when (and only when) a
@protocol() expression is found, in order to compile it. */
tree
objc_build_protocol_expr (tree protoname)
{
tree p = lookup_protocol (protoname, /* warn if deprecated */ true,
/* definition_required */ false);
 
if (!p)
{
error ("cannot find protocol declaration for %qE", protoname);
return error_mark_node;
}
 
return (*runtime.get_protocol_reference) (input_location, p);
}
 
/* This function is called by the parser when a @selector() expression
is found, in order to compile it. It is only called by the parser
and only to compile a @selector(). LOC is the location of the
@selector. */
tree
objc_build_selector_expr (location_t loc, tree selnamelist)
{
tree selname;
 
/* Obtain the full selector name. */
switch (TREE_CODE (selnamelist))
{
case IDENTIFIER_NODE:
/* A unary selector. */
selname = selnamelist;
break;
case TREE_LIST:
selname = build_keyword_selector (selnamelist);
break;
default:
gcc_unreachable ();
}
 
/* If we are required to check @selector() expressions as they
are found, check that the selector has been declared. */
if (warn_undeclared_selector)
{
/* Look the selector up in the list of all known class and
instance methods (up to this line) to check that the selector
exists. */
tree method;
 
/* First try with instance methods. */
method = objc_map_get (instance_method_map, selname);
 
/* If not found, try with class methods. */
if (method == OBJC_MAP_NOT_FOUND)
{
method = objc_map_get (class_method_map, selname);
 
/* If still not found, print out a warning. */
if (method == OBJC_MAP_NOT_FOUND)
warning (0, "undeclared selector %qE", selname);
}
}
 
/* The runtimes do this differently, most particularly, GNU has typed
selectors, whilst NeXT does not. */
return (*runtime.build_selector_reference) (loc, selname, NULL_TREE);
}
 
static tree
build_ivar_reference (tree id)
{
tree base;
if (TREE_CODE (objc_method_context) == CLASS_METHOD_DECL)
{
/* Historically, a class method that produced objects (factory
method) would assign `self' to the instance that it
allocated. This would effectively turn the class method into
an instance method. Following this assignment, the instance
variables could be accessed. That practice, while safe,
violates the simple rule that a class method should not refer
to an instance variable. It's better to catch the cases
where this is done unknowingly than to support the above
paradigm. */
warning (0, "instance variable %qE accessed in class method",
id);
self_decl = convert (objc_instance_type, self_decl); /* cast */
}
 
base = build_indirect_ref (input_location, self_decl, RO_ARROW);
return (*runtime.build_ivar_reference) (input_location, base, id);
}
 
static void
hash_init (void)
{
instance_method_map = objc_map_alloc_ggc (1000);
class_method_map = objc_map_alloc_ggc (1000);
 
class_name_map = objc_map_alloc_ggc (200);
alias_name_map = objc_map_alloc_ggc (200);
 
/* Initialize the hash table used to hold the constant string objects. */
string_htab = htab_create_ggc (31, string_hash,
string_eq, NULL);
}
 
/* Use the following to add a method to class_method_map or
instance_method_map. It will add the method, keyed by the
METHOD_SEL_NAME. If the method already exists, but with one or
more different prototypes, it will store a TREE_VEC in the map,
with the method prototypes in the vector. */
static void
insert_method_into_method_map (bool class_method, tree method)
{
tree method_name = METHOD_SEL_NAME (method);
tree existing_entry;
objc_map_t map;
 
if (class_method)
map = class_method_map;
else
map = instance_method_map;
 
/* Check if the method already exists in the map. */
existing_entry = objc_map_get (map, method_name);
 
/* If not, we simply add it to the map. */
if (existing_entry == OBJC_MAP_NOT_FOUND)
objc_map_put (map, method_name, method);
else
{
tree new_entry;
/* If an entry already exists, it's more complicated. We'll
have to check whether the method prototype is the same or
not. */
if (TREE_CODE (existing_entry) != TREE_VEC)
{
/* If the method prototypes are the same, there is nothing
to do. */
if (comp_proto_with_proto (method, existing_entry, 1))
return;
 
/* If not, create a vector to store both the method already
in the map, and the new one that we are adding. */
new_entry = make_tree_vec (2);
TREE_VEC_ELT (new_entry, 0) = existing_entry;
TREE_VEC_ELT (new_entry, 1) = method;
}
else
{
/* An entry already exists, and it's already a vector. This
means that at least 2 different method prototypes were
already found, and we're considering registering yet
another one. */
size_t i;
 
/* Check all the existing prototypes. If any matches the
one we need to add, there is nothing to do because it's
already there. */
for (i = 0; i < (size_t) TREE_VEC_LENGTH (existing_entry); i++)
if (comp_proto_with_proto (method, TREE_VEC_ELT (existing_entry, i), 1))
return;
 
/* Else, create a new, bigger vector and add the new method
at the end of it. This is inefficient but extremely
rare; in any sane program most methods have a single
prototype, and very few, if any, will have more than
2! */
new_entry = make_tree_vec (TREE_VEC_LENGTH (existing_entry) + 1);
/* Copy the methods from the existing vector. */
for (i = 0; i < (size_t) TREE_VEC_LENGTH (existing_entry); i++)
TREE_VEC_ELT (new_entry, i) = TREE_VEC_ELT (existing_entry, i);
/* Add the new method at the end. */
TREE_VEC_ELT (new_entry, i) = method;
}
 
/* Store the new vector in the map. */
objc_map_put (map, method_name, new_entry);
}
}
 
static tree
lookup_method (tree mchain, tree method)
{
tree key;
 
if (TREE_CODE (method) == IDENTIFIER_NODE)
key = method;
else
key = METHOD_SEL_NAME (method);
 
while (mchain)
{
if (METHOD_SEL_NAME (mchain) == key)
return mchain;
 
mchain = DECL_CHAIN (mchain);
}
return NULL_TREE;
}
 
/* Look up a class (if OBJC_LOOKUP_CLASS is set in FLAGS) or instance
method in INTERFACE, along with any categories and protocols
attached thereto. If method is not found, and the
OBJC_LOOKUP_NO_SUPER is _not_ set in FLAGS, recursively examine the
INTERFACE's superclass. If OBJC_LOOKUP_CLASS is set,
OBJC_LOOKUP_NO_SUPER is clear, and no suitable class method could
be found in INTERFACE or any of its superclasses, look for an
_instance_ method of the same name in the root class as a last
resort. This behaviour can be turned off by using
OBJC_LOOKUP_NO_INSTANCE_METHODS_OF_ROOT_CLASS.
 
If a suitable method cannot be found, return NULL_TREE. */
 
static tree
lookup_method_static (tree interface, tree ident, int flags)
{
tree meth = NULL_TREE, root_inter = NULL_TREE;
tree inter = interface;
int is_class = (flags & OBJC_LOOKUP_CLASS);
int no_superclasses = (flags & OBJC_LOOKUP_NO_SUPER);
int no_instance_methods_of_root_class = (flags & OBJC_LOOKUP_NO_INSTANCE_METHODS_OF_ROOT_CLASS);
 
while (inter)
{
tree chain = is_class ? CLASS_CLS_METHODS (inter) : CLASS_NST_METHODS (inter);
tree category = inter;
 
/* First, look up the method in the class itself. */
if ((meth = lookup_method (chain, ident)))
return meth;
 
/* Failing that, look for the method in each category of the class. */
while ((category = CLASS_CATEGORY_LIST (category)))
{
chain = is_class ? CLASS_CLS_METHODS (category) : CLASS_NST_METHODS (category);
 
/* Check directly in each category. */
if ((meth = lookup_method (chain, ident)))
return meth;
 
/* Failing that, check in each category's protocols. */
if (CLASS_PROTOCOL_LIST (category))
{
if ((meth = (lookup_method_in_protocol_list
(CLASS_PROTOCOL_LIST (category), ident, is_class))))
return meth;
}
}
 
/* If not found in categories, check in protocols of the main class. */
if (CLASS_PROTOCOL_LIST (inter))
{
if ((meth = (lookup_method_in_protocol_list
(CLASS_PROTOCOL_LIST (inter), ident, is_class))))
return meth;
}
 
/* If we were instructed not to look in superclasses, don't. */
if (no_superclasses)
return NULL_TREE;
 
/* Failing that, climb up the inheritance hierarchy. */
root_inter = inter;
inter = lookup_interface (CLASS_SUPER_NAME (inter));
}
while (inter);
 
if (is_class && !no_instance_methods_of_root_class)
{
/* If no class (factory) method was found, check if an _instance_
method of the same name exists in the root class. This is what
the Objective-C runtime will do. */
return lookup_method_static (root_inter, ident, 0);
}
else
{
/* If an instance method was not found, return 0. */
return NULL_TREE;
}
}
 
static tree
objc_add_method (tree klass, tree method, int is_class, bool is_optional)
{
tree existing_method = NULL_TREE;
 
/* The first thing we do is look up the method in the list of
methods already defined in the interface (or implementation). */
if (is_class)
existing_method = lookup_method (CLASS_CLS_METHODS (klass), method);
else
existing_method = lookup_method (CLASS_NST_METHODS (klass), method);
 
/* In the case of protocols, we have a second list of methods to
consider, the list of optional ones. */
if (TREE_CODE (klass) == PROTOCOL_INTERFACE_TYPE)
{
/* @required methods are added to the protocol's normal list.
@optional methods are added to the protocol's OPTIONAL lists.
Note that adding the methods to the optional lists disables
checking that the methods are implemented by classes
implementing the protocol, since these checks only use the
CLASS_CLS_METHODS and CLASS_NST_METHODS. */
 
/* First of all, if the method to add is @optional, and we found
it already existing as @required, emit an error. */
if (is_optional && existing_method)
{
error ("method %<%c%E%> declared %<@optional%> and %<@required%> at the same time",
(is_class ? '+' : '-'),
METHOD_SEL_NAME (existing_method));
inform (DECL_SOURCE_LOCATION (existing_method),
"previous declaration of %<%c%E%> as %<@required%>",
(is_class ? '+' : '-'),
METHOD_SEL_NAME (existing_method));
}
 
/* Now check the list of @optional methods if we didn't find the
method in the @required list. */
if (!existing_method)
{
if (is_class)
existing_method = lookup_method (PROTOCOL_OPTIONAL_CLS_METHODS (klass), method);
else
existing_method = lookup_method (PROTOCOL_OPTIONAL_NST_METHODS (klass), method);
 
if (!is_optional && existing_method)
{
error ("method %<%c%E%> declared %<@optional%> and %<@required%> at the same time",
(is_class ? '+' : '-'),
METHOD_SEL_NAME (existing_method));
inform (DECL_SOURCE_LOCATION (existing_method),
"previous declaration of %<%c%E%> as %<@optional%>",
(is_class ? '+' : '-'),
METHOD_SEL_NAME (existing_method));
}
}
}
 
/* If the method didn't exist already, add it. */
if (!existing_method)
{
if (is_optional)
{
if (is_class)
{
/* Put the method on the list in reverse order. */
TREE_CHAIN (method) = PROTOCOL_OPTIONAL_CLS_METHODS (klass);
PROTOCOL_OPTIONAL_CLS_METHODS (klass) = method;
}
else
{
TREE_CHAIN (method) = PROTOCOL_OPTIONAL_NST_METHODS (klass);
PROTOCOL_OPTIONAL_NST_METHODS (klass) = method;
}
}
else
{
if (is_class)
{
DECL_CHAIN (method) = CLASS_CLS_METHODS (klass);
CLASS_CLS_METHODS (klass) = method;
}
else
{
DECL_CHAIN (method) = CLASS_NST_METHODS (klass);
CLASS_NST_METHODS (klass) = method;
}
}
}
else
{
/* The method was already defined. Check that the types match
for an @interface for a class or category, or for a
@protocol. Give hard errors on methods with identical
selectors but differing argument and/or return types. We do
not do this for @implementations, because C/C++ will do it
for us (i.e., there will be duplicate function definition
errors). */
if ((TREE_CODE (klass) == CLASS_INTERFACE_TYPE
|| TREE_CODE (klass) == CATEGORY_INTERFACE_TYPE
/* Starting with GCC 4.6, we emit the same error for
protocols too. The situation is identical to
@interfaces as there is no possible meaningful reason
for defining the same method with different signatures
in the very same @protocol. If that was allowed,
whenever the protocol is used (both at compile and run
time) there wouldn't be any meaningful way to decide
which of the two method signatures should be used. */
|| TREE_CODE (klass) == PROTOCOL_INTERFACE_TYPE)
&& !comp_proto_with_proto (method, existing_method, 1))
{
error ("duplicate declaration of method %<%c%E%> with conflicting types",
(is_class ? '+' : '-'),
METHOD_SEL_NAME (existing_method));
inform (DECL_SOURCE_LOCATION (existing_method),
"previous declaration of %<%c%E%>",
(is_class ? '+' : '-'),
METHOD_SEL_NAME (existing_method));
}
}
 
if (is_class)
insert_method_into_method_map (true, method);
else
{
insert_method_into_method_map (false, method);
 
/* Instance methods in root classes (and categories thereof)
may act as class methods as a last resort. We also add
instance methods listed in @protocol declarations to
the class hash table, on the assumption that @protocols
may be adopted by root classes or categories. */
if (TREE_CODE (klass) == CATEGORY_INTERFACE_TYPE
|| TREE_CODE (klass) == CATEGORY_IMPLEMENTATION_TYPE)
klass = lookup_interface (CLASS_NAME (klass));
 
if (TREE_CODE (klass) == PROTOCOL_INTERFACE_TYPE
|| !CLASS_SUPER_NAME (klass))
insert_method_into_method_map (true, method);
}
 
return method;
}
 
static void
add_category (tree klass, tree category)
{
/* Put categories on list in reverse order. */
tree cat = lookup_category (klass, CLASS_SUPER_NAME (category));
 
if (cat)
{
warning (0, "duplicate interface declaration for category %<%E(%E)%>",
CLASS_NAME (klass),
CLASS_SUPER_NAME (category));
}
else
{
CLASS_CATEGORY_LIST (category) = CLASS_CATEGORY_LIST (klass);
CLASS_CATEGORY_LIST (klass) = category;
}
}
 
#ifndef OBJCPLUS
/* A flexible array member is a C99 extension where you can use
"type[]" at the end of a struct to mean a variable-length array.
 
In Objective-C, instance variables are fundamentally members of a
struct, but the struct can always be extended by subclassing; hence
we need to detect and forbid all instance variables declared using
flexible array members.
 
No check for this is needed in Objective-C++, since C++ does not
have flexible array members. */
 
/* Determine whether TYPE is a structure with a flexible array member,
a union containing such a structure (possibly recursively) or an
array of such structures or unions. These are all invalid as
instance variable. */
static bool
flexible_array_type_p (tree type)
{
tree x;
switch (TREE_CODE (type))
{
case RECORD_TYPE:
x = TYPE_FIELDS (type);
if (x == NULL_TREE)
return false;
while (DECL_CHAIN (x) != NULL_TREE)
x = DECL_CHAIN (x);
if (TREE_CODE (TREE_TYPE (x)) == ARRAY_TYPE
&& TYPE_SIZE (TREE_TYPE (x)) == NULL_TREE
&& TYPE_DOMAIN (TREE_TYPE (x)) != NULL_TREE
&& TYPE_MAX_VALUE (TYPE_DOMAIN (TREE_TYPE (x))) == NULL_TREE)
return true;
return false;
case UNION_TYPE:
for (x = TYPE_FIELDS (type); x != NULL_TREE; x = DECL_CHAIN (x))
{
if (flexible_array_type_p (TREE_TYPE (x)))
return true;
}
return false;
/* Note that we also check for arrays of something that uses a flexible array member. */
case ARRAY_TYPE:
if (flexible_array_type_p (TREE_TYPE (type)))
return true;
return false;
default:
return false;
}
}
#endif
 
/* Produce a printable version of an ivar name. This is only used
inside add_instance_variable. */
static const char *
printable_ivar_name (tree field_decl)
{
if (DECL_NAME (field_decl))
return identifier_to_locale (IDENTIFIER_POINTER (DECL_NAME (field_decl)));
else
return _("<unnamed>");
}
 
/* Called after parsing each instance variable declaration. Necessary to
preserve typedefs and implement public/private...
 
VISIBILITY is 1 for public, 0 for protected, and 2 for private. */
 
static tree
add_instance_variable (tree klass, objc_ivar_visibility_kind visibility,
tree field_decl)
{
tree field_type = TREE_TYPE (field_decl);
 
#ifdef OBJCPLUS
if (TREE_CODE (field_type) == REFERENCE_TYPE)
{
error ("illegal reference type specified for instance variable %qs",
printable_ivar_name (field_decl));
/* Return class as is without adding this ivar. */
return klass;
}
#endif
 
if (field_type == error_mark_node || !TYPE_SIZE (field_type)
|| TYPE_SIZE (field_type) == error_mark_node)
/* 'type[0]' is allowed, but 'type[]' is not! */
{
error ("instance variable %qs has unknown size",
printable_ivar_name (field_decl));
/* Return class as is without adding this ivar. */
return klass;
}
 
#ifndef OBJCPLUS
/* Also, in C reject a struct with a flexible array member. Ie,
 
struct A { int x; int[] y; };
 
@interface X
{
struct A instance_variable;
}
@end
 
is not valid because if the class is subclassed, we wouldn't be able
to calculate the offset of the next instance variable. */
if (flexible_array_type_p (field_type))
{
error ("instance variable %qs uses flexible array member",
printable_ivar_name (field_decl));
/* Return class as is without adding this ivar. */
return klass;
}
#endif
 
#ifdef OBJCPLUS
/* Check if the ivar being added has a non-POD C++ type. If so, we will
need to either (1) warn the user about it or (2) generate suitable
constructor/destructor call from '- .cxx_construct' or '- .cxx_destruct'
methods (if '-fobjc-call-cxx-cdtors' was specified). */
if (MAYBE_CLASS_TYPE_P (field_type)
&& (TYPE_NEEDS_CONSTRUCTING (field_type)
|| TYPE_HAS_NONTRIVIAL_DESTRUCTOR (field_type)
|| TYPE_POLYMORPHIC_P (field_type)))
{
tree type_name = OBJC_TYPE_NAME (field_type);
 
if (flag_objc_call_cxx_cdtors)
{
/* Since the ObjC runtime will be calling the constructors and
destructors for us, the only thing we can't handle is the lack
of a default constructor. */
if (TYPE_NEEDS_CONSTRUCTING (field_type)
&& !TYPE_HAS_DEFAULT_CONSTRUCTOR (field_type))
{
warning (0, "type %qE has no default constructor to call",
type_name);
 
/* If we cannot call a constructor, we should also avoid
calling the destructor, for symmetry. */
if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (field_type))
warning (0, "destructor for %qE shall not be run either",
type_name);
}
}
else
{
static bool warn_cxx_ivars = false;
 
if (TYPE_POLYMORPHIC_P (field_type))
{
/* Vtable pointers are Real Bad(tm), since Obj-C cannot
initialize them. */
error ("type %qE has virtual member functions", type_name);
error ("illegal aggregate type %qE specified "
"for instance variable %qs",
type_name, printable_ivar_name (field_decl));
/* Return class as is without adding this ivar. */
return klass;
}
 
/* User-defined constructors and destructors are not known to Obj-C
and hence will not be called. This may or may not be a problem. */
if (TYPE_NEEDS_CONSTRUCTING (field_type))
warning (0, "type %qE has a user-defined constructor", type_name);
if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (field_type))
warning (0, "type %qE has a user-defined destructor", type_name);
 
if (!warn_cxx_ivars)
{
warning (0, "C++ constructors and destructors will not "
"be invoked for Objective-C fields");
warn_cxx_ivars = true;
}
}
}
#endif
 
/* Overload the public attribute, it is not used for FIELD_DECLs. */
switch (visibility)
{
case OBJC_IVAR_VIS_PROTECTED:
TREE_PUBLIC (field_decl) = 0;
TREE_PRIVATE (field_decl) = 0;
TREE_PROTECTED (field_decl) = 1;
break;
 
case OBJC_IVAR_VIS_PACKAGE:
/* TODO: Implement the package variant. */
case OBJC_IVAR_VIS_PUBLIC:
TREE_PUBLIC (field_decl) = 1;
TREE_PRIVATE (field_decl) = 0;
TREE_PROTECTED (field_decl) = 0;
break;
 
case OBJC_IVAR_VIS_PRIVATE:
TREE_PUBLIC (field_decl) = 0;
TREE_PRIVATE (field_decl) = 1;
TREE_PROTECTED (field_decl) = 0;
break;
 
}
 
CLASS_RAW_IVARS (klass) = chainon (CLASS_RAW_IVARS (klass), field_decl);
 
return klass;
}
 
/* True if the ivar is private and we are not in its implementation. */
 
static int
is_private (tree decl)
{
return (TREE_PRIVATE (decl)
&& ! is_ivar (CLASS_IVARS (implementation_template),
DECL_NAME (decl)));
}
 
/* Searches all the instance variables of 'klass' and of its
superclasses for an instance variable whose name (identifier) is
'ivar_name_ident'. Return the declaration (DECL) of the instance
variable, if found, or NULL_TREE, if not found. */
static inline tree
ivar_of_class (tree klass, tree ivar_name_ident)
{
/* First, look up the ivar in CLASS_RAW_IVARS. */
tree decl_chain = CLASS_RAW_IVARS (klass);
 
for ( ; decl_chain; decl_chain = DECL_CHAIN (decl_chain))
if (DECL_NAME (decl_chain) == ivar_name_ident)
return decl_chain;
 
/* If not found, search up the class hierarchy. */
while (CLASS_SUPER_NAME (klass))
{
klass = lookup_interface (CLASS_SUPER_NAME (klass));
 
decl_chain = CLASS_RAW_IVARS (klass);
 
for ( ; decl_chain; decl_chain = DECL_CHAIN (decl_chain))
if (DECL_NAME (decl_chain) == ivar_name_ident)
return decl_chain;
}
 
return NULL_TREE;
}
 
/* We have an instance variable reference;, check to see if it is public. */
 
int
objc_is_public (tree expr, tree identifier)
{
tree basetype, decl;
 
#ifdef OBJCPLUS
if (processing_template_decl)
return 1;
#endif
 
if (TREE_TYPE (expr) == error_mark_node)
return 1;
 
basetype = TYPE_MAIN_VARIANT (TREE_TYPE (expr));
 
if (basetype && TREE_CODE (basetype) == RECORD_TYPE)
{
if (TYPE_HAS_OBJC_INFO (basetype) && TYPE_OBJC_INTERFACE (basetype))
{
tree klass = lookup_interface (OBJC_TYPE_NAME (basetype));
 
if (!klass)
{
error ("cannot find interface declaration for %qE",
OBJC_TYPE_NAME (basetype));
return 0;
}
 
if ((decl = ivar_of_class (klass, identifier)))
{
if (TREE_PUBLIC (decl))
return 1;
 
/* Important difference between the Stepstone translator:
all instance variables should be public within the context
of the implementation. */
if (objc_implementation_context
&& ((TREE_CODE (objc_implementation_context)
== CLASS_IMPLEMENTATION_TYPE)
|| (TREE_CODE (objc_implementation_context)
== CATEGORY_IMPLEMENTATION_TYPE)))
{
tree curtype = TYPE_MAIN_VARIANT
(CLASS_STATIC_TEMPLATE
(implementation_template));
 
if (basetype == curtype
|| DERIVED_FROM_P (basetype, curtype))
{
int priv = is_private (decl);
 
if (priv)
error ("instance variable %qE is declared private",
DECL_NAME (decl));
 
return !priv;
}
}
 
/* The 2.95.2 compiler sometimes allowed C functions to access
non-@public ivars. We will let this slide for now... */
if (!objc_method_context)
{
warning (0, "instance variable %qE is %s; "
"this will be a hard error in the future",
identifier,
TREE_PRIVATE (decl) ? "@private" : "@protected");
return 1;
}
 
error ("instance variable %qE is declared %s",
identifier,
TREE_PRIVATE (decl) ? "private" : "protected");
return 0;
}
}
}
 
return 1;
}
/* Make sure all methods in CHAIN (a list of method declarations from
an @interface or a @protocol) are in IMPLEMENTATION (the
implementation context). This is used to check for example that
all methods declared in an @interface were implemented in an
@implementation.
 
Some special methods (property setters/getters) are special and if
they are not found in IMPLEMENTATION, we look them up in its
superclasses. */
 
static int
check_methods (tree chain, tree implementation, int mtype)
{
int first = 1;
tree list;
 
if (mtype == (int)'+')
list = CLASS_CLS_METHODS (implementation);
else
list = CLASS_NST_METHODS (implementation);
 
while (chain)
{
/* If the method is associated with a dynamic property, then it
is Ok not to have the method implementation, as it will be
generated dynamically at runtime. To decide if the method is
associated with a @dynamic property, we search the list of
@synthesize and @dynamic for this implementation, and look
for any @dynamic property with the same setter or getter name
as this method. */
tree x;
for (x = IMPL_PROPERTY_DECL (implementation); x; x = TREE_CHAIN (x))
if (PROPERTY_DYNAMIC (x)
&& (PROPERTY_GETTER_NAME (x) == METHOD_SEL_NAME (chain)
|| PROPERTY_SETTER_NAME (x) == METHOD_SEL_NAME (chain)))
break;
 
if (x != NULL_TREE)
{
chain = TREE_CHAIN (chain); /* next method... */
continue;
}
 
if (!lookup_method (list, chain))
{
/* If the method is a property setter/getter, we'll still
allow it to be missing if it is implemented by
'interface' or any of its superclasses. */
tree property = METHOD_PROPERTY_CONTEXT (chain);
if (property)
{
/* Note that since this is a property getter/setter, it
is obviously an instance method. */
tree interface = NULL_TREE;
 
/* For a category, first check the main class
@interface. */
if (TREE_CODE (implementation) == CATEGORY_IMPLEMENTATION_TYPE)
{
interface = lookup_interface (CLASS_NAME (implementation));
 
/* If the method is found in the main class, it's Ok. */
if (lookup_method (CLASS_NST_METHODS (interface), chain))
{
chain = DECL_CHAIN (chain);
continue;
}
 
/* Else, get the superclass. */
if (CLASS_SUPER_NAME (interface))
interface = lookup_interface (CLASS_SUPER_NAME (interface));
else
interface = NULL_TREE;
}
 
/* Get the superclass for classes. */
if (TREE_CODE (implementation) == CLASS_IMPLEMENTATION_TYPE)
{
if (CLASS_SUPER_NAME (implementation))
interface = lookup_interface (CLASS_SUPER_NAME (implementation));
else
interface = NULL_TREE;
}
 
/* Now, interface is the superclass, if any; go check it. */
if (interface)
{
if (lookup_method_static (interface, chain, 0))
{
chain = DECL_CHAIN (chain);
continue;
}
}
/* Else, fall through - warn. */
}
if (first)
{
switch (TREE_CODE (implementation))
{
case CLASS_IMPLEMENTATION_TYPE:
warning (0, "incomplete implementation of class %qE",
CLASS_NAME (implementation));
break;
case CATEGORY_IMPLEMENTATION_TYPE:
warning (0, "incomplete implementation of category %qE",
CLASS_SUPER_NAME (implementation));
break;
default:
gcc_unreachable ();
}
first = 0;
}
 
warning (0, "method definition for %<%c%E%> not found",
mtype, METHOD_SEL_NAME (chain));
}
 
chain = DECL_CHAIN (chain);
}
 
return first;
}
 
/* Check if KLASS, or its superclasses, explicitly conforms to PROTOCOL. */
 
static int
conforms_to_protocol (tree klass, tree protocol)
{
if (TREE_CODE (protocol) == PROTOCOL_INTERFACE_TYPE)
{
tree p = CLASS_PROTOCOL_LIST (klass);
while (p && TREE_VALUE (p) != protocol)
p = TREE_CHAIN (p);
 
if (!p)
{
tree super = (CLASS_SUPER_NAME (klass)
? lookup_interface (CLASS_SUPER_NAME (klass))
: NULL_TREE);
int tmp = super ? conforms_to_protocol (super, protocol) : 0;
if (!tmp)
return 0;
}
}
 
return 1;
}
 
/* Make sure all methods in CHAIN are accessible as MTYPE methods in
CONTEXT. This is one of two mechanisms to check protocol integrity. */
 
static int
check_methods_accessible (tree chain, tree context, int mtype)
{
int first = 1;
tree list;
tree base_context = context;
 
while (chain)
{
/* If the method is associated with a dynamic property, then it
is Ok not to have the method implementation, as it will be
generated dynamically at runtime. Search for any @dynamic
property with the same setter or getter name as this
method. TODO: Use a hashtable lookup. */
tree x;
for (x = IMPL_PROPERTY_DECL (base_context); x; x = TREE_CHAIN (x))
if (PROPERTY_DYNAMIC (x)
&& (PROPERTY_GETTER_NAME (x) == METHOD_SEL_NAME (chain)
|| PROPERTY_SETTER_NAME (x) == METHOD_SEL_NAME (chain)))
break;
 
if (x != NULL_TREE)
{
chain = TREE_CHAIN (chain); /* next method... */
continue;
}
 
context = base_context;
while (context)
{
if (mtype == '+')
list = CLASS_CLS_METHODS (context);
else
list = CLASS_NST_METHODS (context);
 
if (lookup_method (list, chain))
break;
 
switch (TREE_CODE (context))
{
case CLASS_IMPLEMENTATION_TYPE:
case CLASS_INTERFACE_TYPE:
context = (CLASS_SUPER_NAME (context)
? lookup_interface (CLASS_SUPER_NAME (context))
: NULL_TREE);
break;
case CATEGORY_IMPLEMENTATION_TYPE:
case CATEGORY_INTERFACE_TYPE:
context = (CLASS_NAME (context)
? lookup_interface (CLASS_NAME (context))
: NULL_TREE);
break;
default:
gcc_unreachable ();
}
}
 
if (context == NULL_TREE)
{
if (first)
{
switch (TREE_CODE (objc_implementation_context))
{
case CLASS_IMPLEMENTATION_TYPE:
warning (0, "incomplete implementation of class %qE",
CLASS_NAME (objc_implementation_context));
break;
case CATEGORY_IMPLEMENTATION_TYPE:
warning (0, "incomplete implementation of category %qE",
CLASS_SUPER_NAME (objc_implementation_context));
break;
default:
gcc_unreachable ();
}
first = 0;
}
warning (0, "method definition for %<%c%E%> not found",
mtype, METHOD_SEL_NAME (chain));
}
 
chain = TREE_CHAIN (chain); /* next method... */
}
return first;
}
 
/* Check whether the current interface (accessible via
'objc_implementation_context') actually implements protocol P, along
with any protocols that P inherits. */
 
static void
check_protocol (tree p, const char *type, tree name)
{
if (TREE_CODE (p) == PROTOCOL_INTERFACE_TYPE)
{
int f1, f2;
 
/* Ensure that all protocols have bodies! */
if (warn_protocol)
{
f1 = check_methods (PROTOCOL_CLS_METHODS (p),
objc_implementation_context,
'+');
f2 = check_methods (PROTOCOL_NST_METHODS (p),
objc_implementation_context,
'-');
}
else
{
f1 = check_methods_accessible (PROTOCOL_CLS_METHODS (p),
objc_implementation_context,
'+');
f2 = check_methods_accessible (PROTOCOL_NST_METHODS (p),
objc_implementation_context,
'-');
}
 
if (!f1 || !f2)
warning (0, "%s %qE does not fully implement the %qE protocol",
type, name, PROTOCOL_NAME (p));
}
 
/* Check protocols recursively. */
if (PROTOCOL_LIST (p))
{
tree subs = PROTOCOL_LIST (p);
tree super_class =
lookup_interface (CLASS_SUPER_NAME (implementation_template));
 
while (subs)
{
tree sub = TREE_VALUE (subs);
 
/* If the superclass does not conform to the protocols
inherited by P, then we must! */
if (!super_class || !conforms_to_protocol (super_class, sub))
check_protocol (sub, type, name);
subs = TREE_CHAIN (subs);
}
}
}
 
/* Check whether the current interface (accessible via
'objc_implementation_context') actually implements the protocols listed
in PROTO_LIST. */
 
static void
check_protocols (tree proto_list, const char *type, tree name)
{
for ( ; proto_list; proto_list = TREE_CHAIN (proto_list))
{
tree p = TREE_VALUE (proto_list);
 
check_protocol (p, type, name);
}
}
/* Make sure that the class CLASS_NAME is defined CODE says which kind
of thing CLASS_NAME ought to be. It can be CLASS_INTERFACE_TYPE,
CLASS_IMPLEMENTATION_TYPE, CATEGORY_INTERFACE_TYPE, or
CATEGORY_IMPLEMENTATION_TYPE. For a CATEGORY_INTERFACE_TYPE,
SUPER_NAME is the name of the category. For a class extension,
CODE is CATEGORY_INTERFACE_TYPE and SUPER_NAME is NULL_TREE. */
static tree
start_class (enum tree_code code, tree class_name, tree super_name,
tree protocol_list, tree attributes)
{
tree klass = NULL_TREE;
tree decl;
 
#ifdef OBJCPLUS
if (current_namespace != global_namespace)
{
error ("Objective-C declarations may only appear in global scope");
}
#endif /* OBJCPLUS */
 
if (objc_implementation_context)
{
warning (0, "%<@end%> missing in implementation context");
finish_class (objc_implementation_context);
objc_ivar_chain = NULL_TREE;
objc_implementation_context = NULL_TREE;
}
 
/* If this is a class extension, we'll be "reopening" the existing
CLASS_INTERFACE_TYPE, so in that case there is no need to create
a new node. */
if (code != CATEGORY_INTERFACE_TYPE || super_name != NULL_TREE)
{
klass = make_node (code);
TYPE_LANG_SLOT_1 (klass) = make_tree_vec (CLASS_LANG_SLOT_ELTS);
}
 
/* Check for existence of the super class, if one was specified. Note
that we must have seen an @interface, not just a @class. If we
are looking at a @compatibility_alias, traverse it first. */
if ((code == CLASS_INTERFACE_TYPE || code == CLASS_IMPLEMENTATION_TYPE)
&& super_name)
{
tree super = objc_is_class_name (super_name);
tree super_interface = NULL_TREE;
 
if (super)
super_interface = lookup_interface (super);
 
if (!super_interface)
{
error ("cannot find interface declaration for %qE, superclass of %qE",
super ? super : super_name,
class_name);
super_name = NULL_TREE;
}
else
{
if (TREE_DEPRECATED (super_interface))
warning (OPT_Wdeprecated_declarations, "class %qE is deprecated",
super);
super_name = super;
}
}
 
if (code != CATEGORY_INTERFACE_TYPE || super_name != NULL_TREE)
{
CLASS_NAME (klass) = class_name;
CLASS_SUPER_NAME (klass) = super_name;
CLASS_CLS_METHODS (klass) = NULL_TREE;
}
 
if (! objc_is_class_name (class_name)
&& (decl = lookup_name (class_name)))
{
error ("%qE redeclared as different kind of symbol",
class_name);
error ("previous declaration of %q+D",
decl);
}
 
switch (code)
{
case CLASS_IMPLEMENTATION_TYPE:
{
tree chain;
 
for (chain = implemented_classes; chain; chain = TREE_CHAIN (chain))
if (TREE_VALUE (chain) == class_name)
{
error ("reimplementation of class %qE",
class_name);
/* TODO: error message saying where it was previously
implemented. */
break;
}
if (chain == NULL_TREE)
implemented_classes = tree_cons (NULL_TREE, class_name,
implemented_classes);
}
 
/* Reset for multiple classes per file. */
method_slot = 0;
 
objc_implementation_context = klass;
 
/* Lookup the interface for this implementation. */
 
if (!(implementation_template = lookup_interface (class_name)))
{
warning (0, "cannot find interface declaration for %qE",
class_name);
add_interface (implementation_template = objc_implementation_context,
class_name);
}
 
/* If a super class has been specified in the implementation,
insure it conforms to the one specified in the interface. */
 
if (super_name
&& (super_name != CLASS_SUPER_NAME (implementation_template)))
{
tree previous_name = CLASS_SUPER_NAME (implementation_template);
error ("conflicting super class name %qE",
super_name);
if (previous_name)
error ("previous declaration of %qE", previous_name);
else
error ("previous declaration");
}
 
else if (! super_name)
{
CLASS_SUPER_NAME (objc_implementation_context)
= CLASS_SUPER_NAME (implementation_template);
}
break;
 
case CLASS_INTERFACE_TYPE:
if (lookup_interface (class_name))
#ifdef OBJCPLUS
error ("duplicate interface declaration for class %qE", class_name);
#else
warning (0, "duplicate interface declaration for class %qE", class_name);
#endif
else
add_interface (klass, class_name);
 
if (protocol_list)
CLASS_PROTOCOL_LIST (klass)
= lookup_and_install_protocols (protocol_list, /* definition_required */ true);
 
if (attributes)
{
tree attribute;
for (attribute = attributes; attribute; attribute = TREE_CHAIN (attribute))
{
tree name = TREE_PURPOSE (attribute);
 
/* TODO: Document what the objc_exception attribute is/does. */
/* We handle the 'deprecated' and (undocumented) 'objc_exception'
attributes. */
if (is_attribute_p ("deprecated", name))
TREE_DEPRECATED (klass) = 1;
else if (is_attribute_p ("objc_exception", name))
CLASS_HAS_EXCEPTION_ATTR (klass) = 1;
else
/* Warn about and ignore all others for now, but store them. */
warning (OPT_Wattributes, "%qE attribute directive ignored", name);
}
TYPE_ATTRIBUTES (klass) = attributes;
}
break;
 
case CATEGORY_INTERFACE_TYPE:
{
tree class_category_is_assoc_with;
 
/* For a category, class_name is really the name of the class that
the following set of methods will be associated with. We must
find the interface so that can derive the objects template. */
if (!(class_category_is_assoc_with = lookup_interface (class_name)))
{
error ("cannot find interface declaration for %qE",
class_name);
exit (FATAL_EXIT_CODE);
}
else
{
if (TREE_DEPRECATED (class_category_is_assoc_with))
warning (OPT_Wdeprecated_declarations, "class %qE is deprecated",
class_name);
 
if (super_name == NULL_TREE)
{
/* This is a class extension. Get the original
interface, and continue working on it. */
objc_in_class_extension = true;
klass = class_category_is_assoc_with;
 
if (protocol_list)
{
/* Append protocols to the original protocol
list. */
CLASS_PROTOCOL_LIST (klass)
= chainon (CLASS_PROTOCOL_LIST (klass),
lookup_and_install_protocols
(protocol_list,
/* definition_required */ true));
}
}
else
{
add_category (class_category_is_assoc_with, klass);
 
if (protocol_list)
CLASS_PROTOCOL_LIST (klass)
= lookup_and_install_protocols
(protocol_list, /* definition_required */ true);
}
}
}
break;
 
case CATEGORY_IMPLEMENTATION_TYPE:
/* Reset for multiple classes per file. */
method_slot = 0;
 
objc_implementation_context = klass;
 
/* For a category, class_name is really the name of the class that
the following set of methods will be associated with. We must
find the interface so that can derive the objects template. */
 
if (!(implementation_template = lookup_interface (class_name)))
{
error ("cannot find interface declaration for %qE",
class_name);
exit (FATAL_EXIT_CODE);
}
break;
default:
gcc_unreachable ();
}
return klass;
}
 
static tree
continue_class (tree klass)
{
switch (TREE_CODE (klass))
{
case CLASS_IMPLEMENTATION_TYPE:
case CATEGORY_IMPLEMENTATION_TYPE:
{
struct imp_entry *imp_entry;
 
/* Check consistency of the instance variables. */
 
if (CLASS_RAW_IVARS (klass))
check_ivars (implementation_template, klass);
 
/* code generation */
#ifdef OBJCPLUS
push_lang_context (lang_name_c);
#endif
build_private_template (implementation_template);
uprivate_record = CLASS_STATIC_TEMPLATE (implementation_template);
objc_instance_type = build_pointer_type (uprivate_record);
 
imp_entry = ggc_alloc_imp_entry ();
 
imp_entry->next = imp_list;
imp_entry->imp_context = klass;
imp_entry->imp_template = implementation_template;
ucls_super_ref = uucls_super_ref = NULL;
if (TREE_CODE (klass) == CLASS_IMPLEMENTATION_TYPE)
{
imp_entry->class_decl = (*runtime.class_decl) (klass);
imp_entry->meta_decl = (*runtime.metaclass_decl) (klass);
}
else
{
imp_entry->class_decl = (*runtime.category_decl) (klass);
imp_entry->meta_decl = NULL;
}
imp_entry->has_cxx_cdtors = 0;
 
/* Append to front and increment count. */
imp_list = imp_entry;
if (TREE_CODE (klass) == CLASS_IMPLEMENTATION_TYPE)
imp_count++;
else
cat_count++;
#ifdef OBJCPLUS
pop_lang_context ();
#endif /* OBJCPLUS */
 
return get_class_ivars (implementation_template, true);
break;
}
case CLASS_INTERFACE_TYPE:
{
if (objc_in_class_extension)
return NULL_TREE;
#ifdef OBJCPLUS
push_lang_context (lang_name_c);
#endif /* OBJCPLUS */
objc_collecting_ivars = 1;
build_private_template (klass);
objc_collecting_ivars = 0;
#ifdef OBJCPLUS
pop_lang_context ();
#endif /* OBJCPLUS */
return NULL_TREE;
break;
}
default:
return error_mark_node;
}
}
 
/* This routine builds name of the setter synthesized function. */
char *
objc_build_property_setter_name (tree ident)
{
/* TODO: Use alloca to allocate buffer of appropriate size. */
static char string[BUFSIZE];
sprintf (string, "set%s:", IDENTIFIER_POINTER (ident));
string[3] = TOUPPER (string[3]);
return string;
}
 
/* This routine prepares the declarations of the property accessor
helper functions (objc_getProperty(), etc) that are used when
@synthesize is used.
 
runtime-specific routines are built in the respective runtime
initialize functions. */
static void
build_common_objc_property_accessor_helpers (void)
{
tree type;
 
/* Declare the following function:
id
objc_getProperty (id self, SEL _cmd,
ptrdiff_t offset, BOOL is_atomic); */
type = build_function_type_list (objc_object_type,
objc_object_type,
objc_selector_type,
ptrdiff_type_node,
boolean_type_node,
NULL_TREE);
objc_getProperty_decl = add_builtin_function ("objc_getProperty",
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
TREE_NOTHROW (objc_getProperty_decl) = 0;
 
/* Declare the following function:
void
objc_setProperty (id self, SEL _cmd,
ptrdiff_t offset, id new_value,
BOOL is_atomic, BOOL should_copy); */
type = build_function_type_list (void_type_node,
objc_object_type,
objc_selector_type,
ptrdiff_type_node,
objc_object_type,
boolean_type_node,
boolean_type_node,
NULL_TREE);
objc_setProperty_decl = add_builtin_function ("objc_setProperty",
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
TREE_NOTHROW (objc_setProperty_decl) = 0;
}
 
/* This looks up an ivar in a class (including superclasses). */
static tree
lookup_ivar (tree interface, tree instance_variable_name)
{
while (interface)
{
tree decl_chain;
 
for (decl_chain = CLASS_IVARS (interface); decl_chain; decl_chain = DECL_CHAIN (decl_chain))
if (DECL_NAME (decl_chain) == instance_variable_name)
return decl_chain;
 
/* Not found. Search superclass if any. */
if (CLASS_SUPER_NAME (interface))
interface = lookup_interface (CLASS_SUPER_NAME (interface));
}
 
return NULL_TREE;
}
 
/* This routine synthesizes a 'getter' method. This is only called
for @synthesize properties. */
static void
objc_synthesize_getter (tree klass, tree class_methods ATTRIBUTE_UNUSED, tree property)
{
location_t location = DECL_SOURCE_LOCATION (property);
tree fn, decl;
tree body;
tree ret_val;
 
/* If user has implemented a getter with same name then do nothing. */
if (lookup_method (CLASS_NST_METHODS (objc_implementation_context),
PROPERTY_GETTER_NAME (property)))
return;
 
/* Find declaration of the property getter in the interface (or
superclass, or protocol). There must be one. */
decl = lookup_method_static (klass, PROPERTY_GETTER_NAME (property), 0);
 
/* If one not declared in the interface, this condition has already
been reported as user error (because property was not declared in
the interface). */
if (!decl)
return;
 
/* Adapt the 'decl'. Use the source location of the @synthesize
statement for error messages. */
decl = copy_node (decl);
DECL_SOURCE_LOCATION (decl) = location;
 
objc_start_method_definition (false /* is_class_method */, decl, NULL_TREE,
NULL_TREE);
body = c_begin_compound_stmt (true);
 
/* Now we need to decide how we build the getter. There are three
cases:
 
for 'copy' or 'retain' properties we need to use the
objc_getProperty() accessor helper which knows about retain and
copy. It supports both 'nonatomic' and 'atomic' access.
 
for 'nonatomic, assign' properties we can access the instance
variable directly. 'nonatomic' means we don't have to use locks,
and 'assign' means we don't have to worry about retain or copy.
If you combine the two, it means we can just access the instance
variable directly.
 
for 'atomic, assign' properties we use objc_copyStruct() (for the
next runtime) or objc_getPropertyStruct() (for the GNU runtime). */
switch (PROPERTY_ASSIGN_SEMANTICS (property))
{
case OBJC_PROPERTY_RETAIN:
case OBJC_PROPERTY_COPY:
{
/* We build "return objc_getProperty (self, _cmd, offset, is_atomic);" */
tree cmd, ivar, offset, is_atomic;
cmd = TREE_CHAIN (DECL_ARGUMENTS (current_function_decl));
 
/* Find the ivar to compute the offset. */
ivar = lookup_ivar (klass, PROPERTY_IVAR_NAME (property));
if (!ivar || is_private (ivar))
{
/* This should never happen. */
error_at (location,
"can not find instance variable associated with property");
ret_val = error_mark_node;
break;
}
offset = byte_position (ivar);
 
if (PROPERTY_NONATOMIC (property))
is_atomic = boolean_false_node;
else
is_atomic = boolean_true_node;
 
ret_val = build_function_call
(location,
/* Function prototype. */
objc_getProperty_decl,
/* Parameters. */
tree_cons /* self */
(NULL_TREE, self_decl,
tree_cons /* _cmd */
(NULL_TREE, cmd,
tree_cons /* offset */
(NULL_TREE, offset,
tree_cons /* is_atomic */
(NULL_TREE, is_atomic, NULL_TREE)))));
}
break;
case OBJC_PROPERTY_ASSIGN:
if (PROPERTY_NONATOMIC (property))
{
/* We build "return self->PROPERTY_IVAR_NAME;" */
ret_val = objc_lookup_ivar (NULL_TREE, PROPERTY_IVAR_NAME (property));
break;
}
else
{
/* We build
<property type> __objc_property_temp;
objc_getPropertyStruct (&__objc_property_temp,
&(self->PROPERTY_IVAR_NAME),
sizeof (type of self->PROPERTY_IVAR_NAME),
is_atomic,
false)
return __objc_property_temp;
 
For the NeXT runtime, we need to use objc_copyStruct
instead of objc_getPropertyStruct. */
tree objc_property_temp_decl, function_decl, function_call;
tree size_of, is_atomic;
 
objc_property_temp_decl = objc_create_temporary_var (TREE_TYPE (property), "__objc_property_temp");
DECL_SOURCE_LOCATION (objc_property_temp_decl) = location;
objc_property_temp_decl = lang_hooks.decls.pushdecl (objc_property_temp_decl);
 
/* sizeof (ivar type). Since the ivar and the property have
the same type, there is no need to lookup the ivar. */
size_of = c_sizeof_or_alignof_type (location, TREE_TYPE (property),
true /* is_sizeof */,
false /* complain */);
 
if (PROPERTY_NONATOMIC (property))
is_atomic = boolean_false_node;
else
is_atomic = boolean_true_node;
 
if (objc_copyStruct_decl)
function_decl = objc_copyStruct_decl;
else
function_decl = objc_getPropertyStruct_decl;
 
function_call = build_function_call
(location,
/* Function prototype. */
function_decl,
/* Parameters. */
tree_cons /* &__objc_property_temp_decl */
/* Warning: note that using build_fold_addr_expr_loc()
here causes invalid code to be generated. */
(NULL_TREE, build_unary_op (location, ADDR_EXPR, objc_property_temp_decl, 0),
tree_cons /* &(self->PROPERTY_IVAR_NAME); */
(NULL_TREE, build_fold_addr_expr_loc (location,
objc_lookup_ivar
(NULL_TREE, PROPERTY_IVAR_NAME (property))),
tree_cons /* sizeof (PROPERTY_IVAR) */
(NULL_TREE, size_of,
tree_cons /* is_atomic */
(NULL_TREE, is_atomic,
/* TODO: This is currently ignored by the GNU
runtime, but what about the next one ? */
tree_cons /* has_strong */
(NULL_TREE, boolean_true_node, NULL_TREE))))));
 
add_stmt (function_call);
 
ret_val = objc_property_temp_decl;
}
break;
default:
gcc_unreachable ();
}
 
gcc_assert (ret_val);
 
#ifdef OBJCPLUS
finish_return_stmt (ret_val);
#else
c_finish_return (location, ret_val, NULL_TREE);
#endif
 
add_stmt (c_end_compound_stmt (location, body, true));
fn = current_function_decl;
#ifdef OBJCPLUS
finish_function ();
#endif
objc_finish_method_definition (fn);
}
 
/* This routine synthesizes a 'setter' method. */
 
static void
objc_synthesize_setter (tree klass, tree class_methods ATTRIBUTE_UNUSED, tree property)
{
location_t location = DECL_SOURCE_LOCATION (property);
tree fn, decl;
tree body;
tree new_value, statement;
 
/* If user has implemented a setter with same name then do nothing. */
if (lookup_method (CLASS_NST_METHODS (objc_implementation_context),
PROPERTY_SETTER_NAME (property)))
return;
 
/* Find declaration of the property setter in the interface (or
superclass, or protocol). There must be one. */
decl = lookup_method_static (klass, PROPERTY_SETTER_NAME (property), 0);
 
/* If one not declared in the interface, this condition has already
been reported as user error (because property was not declared in
the interface). */
if (!decl)
return;
 
/* Adapt the 'decl'. Use the source location of the @synthesize
statement for error messages. */
decl = copy_node (decl);
DECL_SOURCE_LOCATION (decl) = DECL_SOURCE_LOCATION (property);
 
objc_start_method_definition (false /* is_class_method */, decl, NULL_TREE,
NULL_TREE);
 
body = c_begin_compound_stmt (true);
 
/* The 'new_value' is the only argument to the method, which is the
3rd argument of the function, after self and _cmd. We use twice
TREE_CHAIN to move forward two arguments. */
new_value = TREE_CHAIN (TREE_CHAIN (DECL_ARGUMENTS (current_function_decl)));
 
/* This would presumably happen if the user has specified a
prototype for the setter that does not have an argument! */
if (new_value == NULL_TREE)
{
/* TODO: This should be caught much earlier than this. */
error_at (DECL_SOURCE_LOCATION (decl), "invalid setter, it must have one argument");
/* Try to recover somehow. */
new_value = error_mark_node;
}
 
/* Now we need to decide how we build the setter. There are three
cases:
 
for 'copy' or 'retain' properties we need to use the
objc_setProperty() accessor helper which knows about retain and
copy. It supports both 'nonatomic' and 'atomic' access.
 
for 'nonatomic, assign' properties we can access the instance
variable directly. 'nonatomic' means we don't have to use locks,
and 'assign' means we don't have to worry about retain or copy.
If you combine the two, it means we can just access the instance
variable directly.
 
for 'atomic, assign' properties we use objc_copyStruct() (for the
next runtime) or objc_setPropertyStruct() (for the GNU runtime). */
switch (PROPERTY_ASSIGN_SEMANTICS (property))
{
case OBJC_PROPERTY_RETAIN:
case OBJC_PROPERTY_COPY:
{
/* We build "objc_setProperty (self, _cmd, new_value, offset, is_atomic, should_copy);" */
tree cmd, ivar, offset, is_atomic, should_copy;
cmd = TREE_CHAIN (DECL_ARGUMENTS (current_function_decl));
 
/* Find the ivar to compute the offset. */
ivar = lookup_ivar (klass, PROPERTY_IVAR_NAME (property));
if (!ivar || is_private (ivar))
{
error_at (location,
"can not find instance variable associated with property");
statement = error_mark_node;
break;
}
offset = byte_position (ivar);
 
if (PROPERTY_NONATOMIC (property))
is_atomic = boolean_false_node;
else
is_atomic = boolean_true_node;
 
if (PROPERTY_ASSIGN_SEMANTICS (property) == OBJC_PROPERTY_COPY)
should_copy = boolean_true_node;
else
should_copy = boolean_false_node;
 
statement = build_function_call
(location,
/* Function prototype. */
objc_setProperty_decl,
/* Parameters. */
tree_cons /* self */
(NULL_TREE, self_decl,
tree_cons /* _cmd */
(NULL_TREE, cmd,
tree_cons /* offset */
(NULL_TREE, offset,
tree_cons /* new_value */
(NULL_TREE, new_value,
tree_cons /* is_atomic */
(NULL_TREE, is_atomic,
tree_cons /* should_copy */
(NULL_TREE, should_copy, NULL_TREE)))))));
}
break;
case OBJC_PROPERTY_ASSIGN:
if (PROPERTY_NONATOMIC (property))
{
/* We build "self->PROPERTY_IVAR_NAME = new_value;" */
statement = build_modify_expr
(location,
objc_lookup_ivar (NULL_TREE, PROPERTY_IVAR_NAME (property)),
NULL_TREE, NOP_EXPR,
location, new_value, NULL_TREE);
break;
}
else
{
/* We build
objc_setPropertyStruct (&(self->PROPERTY_IVAR_NAME),
&new_value,
sizeof (type of self->PROPERTY_IVAR_NAME),
is_atomic,
false)
 
For the NeXT runtime, we need to use objc_copyStruct
instead of objc_getPropertyStruct. */
tree function_decl, size_of, is_atomic;
 
/* sizeof (ivar type). Since the ivar and the property have
the same type, there is no need to lookup the ivar. */
size_of = c_sizeof_or_alignof_type (location, TREE_TYPE (property),
true /* is_sizeof */,
false /* complain */);
 
if (PROPERTY_NONATOMIC (property))
is_atomic = boolean_false_node;
else
is_atomic = boolean_true_node;
 
if (objc_copyStruct_decl)
function_decl = objc_copyStruct_decl;
else
function_decl = objc_setPropertyStruct_decl;
 
statement = build_function_call
(location,
/* Function prototype. */
function_decl,
/* Parameters. */
tree_cons /* &(self->PROPERTY_IVAR_NAME); */
(NULL_TREE, build_fold_addr_expr_loc (location,
objc_lookup_ivar
(NULL_TREE, PROPERTY_IVAR_NAME (property))),
tree_cons /* &new_value */
(NULL_TREE, build_fold_addr_expr_loc (location, new_value),
tree_cons /* sizeof (PROPERTY_IVAR) */
(NULL_TREE, size_of,
tree_cons /* is_atomic */
(NULL_TREE, is_atomic,
/* TODO: This is currently ignored by the GNU
runtime, but what about the next one ? */
tree_cons /* has_strong */
(NULL_TREE, boolean_true_node, NULL_TREE))))));
}
break;
default:
gcc_unreachable ();
}
gcc_assert (statement);
 
add_stmt (statement);
add_stmt (c_end_compound_stmt (location, body, true));
fn = current_function_decl;
#ifdef OBJCPLUS
finish_function ();
#endif
objc_finish_method_definition (fn);
}
 
/* This function is a sub-routine of objc_add_synthesize_declaration.
It is called for each property to synthesize once we have
determined that the context is Ok. */
static void
objc_add_synthesize_declaration_for_property (location_t location, tree interface,
tree property_name, tree ivar_name)
{
/* Find the @property declaration. */
tree property;
tree x;
 
/* Check that synthesize or dynamic has not already been used for
the same property. */
for (property = IMPL_PROPERTY_DECL (objc_implementation_context); property; property = TREE_CHAIN (property))
if (PROPERTY_NAME (property) == property_name)
{
location_t original_location = DECL_SOURCE_LOCATION (property);
 
if (PROPERTY_DYNAMIC (property))
error_at (location, "property %qs already specified in %<@dynamic%>",
IDENTIFIER_POINTER (property_name));
else
error_at (location, "property %qs already specified in %<@synthesize%>",
IDENTIFIER_POINTER (property_name));
 
if (original_location != UNKNOWN_LOCATION)
inform (original_location, "originally specified here");
return;
}
 
/* Check that the property is declared in the interface. It could
also be declared in a superclass or protocol. */
property = lookup_property (interface, property_name);
 
if (!property)
{
error_at (location, "no declaration of property %qs found in the interface",
IDENTIFIER_POINTER (property_name));
return;
}
else
{
/* We have to copy the property, because we want to chain it to
the implementation context, and we want to store the source
location of the @synthesize, not of the original
@property. */
property = copy_node (property);
DECL_SOURCE_LOCATION (property) = location;
}
 
/* Determine PROPERTY_IVAR_NAME. */
if (ivar_name == NULL_TREE)
ivar_name = property_name;
 
/* Check that the instance variable exists. You can only use an
instance variable from the same class, not one from the
superclass (this makes sense as it allows us to check that an
instance variable is only used in one synthesized property). */
{
tree ivar = is_ivar (CLASS_IVARS (interface), ivar_name);
tree type_of_ivar;
if (!ivar)
{
error_at (location, "ivar %qs used by %<@synthesize%> declaration must be an existing ivar",
IDENTIFIER_POINTER (property_name));
return;
}
 
if (DECL_BIT_FIELD_TYPE (ivar))
type_of_ivar = DECL_BIT_FIELD_TYPE (ivar);
else
type_of_ivar = TREE_TYPE (ivar);
 
/* If the instance variable has a different C type, we throw an error ... */
if (!comptypes (TREE_TYPE (property), type_of_ivar)
/* ... unless the property is readonly, in which case we allow
the instance variable to be more specialized (this means we
can generate the getter all right and it works). */
&& (!PROPERTY_READONLY (property)
|| !objc_compare_types (TREE_TYPE (property),
type_of_ivar, -5, NULL_TREE)))
{
location_t original_location = DECL_SOURCE_LOCATION (ivar);
 
error_at (location, "property %qs is using instance variable %qs of incompatible type",
IDENTIFIER_POINTER (property_name),
IDENTIFIER_POINTER (ivar_name));
 
if (original_location != UNKNOWN_LOCATION)
inform (original_location, "originally specified here");
}
 
/* If the instance variable is a bitfield, the property must be
'assign', 'nonatomic' because the runtime getter/setter helper
do not work with bitfield instance variables. */
if (DECL_BIT_FIELD_TYPE (ivar))
{
/* If there is an error, we return and not generate any
getter/setter because trying to set up the runtime
getter/setter helper calls with bitfields is at high risk
of ICE. */
 
if (PROPERTY_ASSIGN_SEMANTICS (property) != OBJC_PROPERTY_ASSIGN)
{
location_t original_location = DECL_SOURCE_LOCATION (ivar);
 
error_at (location, "'assign' property %qs is using bit-field instance variable %qs",
IDENTIFIER_POINTER (property_name),
IDENTIFIER_POINTER (ivar_name));
 
if (original_location != UNKNOWN_LOCATION)
inform (original_location, "originally specified here");
return;
}
 
if (!PROPERTY_NONATOMIC (property))
{
location_t original_location = DECL_SOURCE_LOCATION (ivar);
 
error_at (location, "'atomic' property %qs is using bit-field instance variable %qs",
IDENTIFIER_POINTER (property_name),
IDENTIFIER_POINTER (ivar_name));
 
if (original_location != UNKNOWN_LOCATION)
inform (original_location, "originally specified here");
return;
}
}
}
 
/* Check that no other property is using the same instance
variable. */
for (x = IMPL_PROPERTY_DECL (objc_implementation_context); x; x = TREE_CHAIN (x))
if (PROPERTY_IVAR_NAME (x) == ivar_name)
{
location_t original_location = DECL_SOURCE_LOCATION (x);
 
error_at (location, "property %qs is using the same instance variable as property %qs",
IDENTIFIER_POINTER (property_name),
IDENTIFIER_POINTER (PROPERTY_NAME (x)));
 
if (original_location != UNKNOWN_LOCATION)
inform (original_location, "originally specified here");
 
/* We keep going on. This won't cause the compiler to fail;
the failure would most likely be at runtime. */
}
 
/* Note that a @synthesize (and only a @synthesize) always sets
PROPERTY_IVAR_NAME to a non-NULL_TREE. You can recognize a
@synthesize by that. */
PROPERTY_IVAR_NAME (property) = ivar_name;
 
/* PROPERTY_SETTER_NAME and PROPERTY_GETTER_NAME are copied from the
original declaration; they are always set (with the exception of
PROPERTY_SETTER_NAME not being set if PROPERTY_READONLY == 1). */
 
/* Add the property to the list of properties for current implementation. */
TREE_CHAIN (property) = IMPL_PROPERTY_DECL (objc_implementation_context);
IMPL_PROPERTY_DECL (objc_implementation_context) = property;
 
/* Note how we don't actually synthesize the getter/setter here; it
would be very natural, but we may miss the fact that the user has
implemented his own getter/setter later on in the @implementation
(in which case we shouldn't generate getter/setter). We wait
until we have parsed it all before generating the code. */
}
 
/* This function is called by the parser after a @synthesize
expression is parsed. 'location' is the location of the
@synthesize expression, and 'property_and_ivar_list' is a chained
list of the property and ivar names. */
void
objc_add_synthesize_declaration (location_t location, tree property_and_ivar_list)
{
tree interface, chain;
 
if (flag_objc1_only)
error_at (input_location, "%<@synthesize%> is not available in Objective-C 1.0");
 
if (property_and_ivar_list == error_mark_node)
return;
 
if (!objc_implementation_context)
{
/* We can get here only in Objective-C; the Objective-C++ parser
detects the problem while parsing, outputs the error
"misplaced '@synthesize' Objective-C++ construct" and skips
the declaration. */
error_at (location, "%<@synthesize%> not in @implementation context");
return;
}
 
if (TREE_CODE (objc_implementation_context) == CATEGORY_IMPLEMENTATION_TYPE)
{
error_at (location, "%<@synthesize%> can not be used in categories");
return;
}
 
interface = lookup_interface (CLASS_NAME (objc_implementation_context));
if (!interface)
{
/* I can't see how this could happen, but it is good as a safety check. */
error_at (location,
"%<@synthesize%> requires the @interface of the class to be available");
return;
}
 
/* Now, iterate over the properties and do each of them. */
for (chain = property_and_ivar_list; chain; chain = TREE_CHAIN (chain))
{
objc_add_synthesize_declaration_for_property (location, interface, TREE_VALUE (chain),
TREE_PURPOSE (chain));
}
}
 
/* This function is a sub-routine of objc_add_dynamic_declaration. It
is called for each property to mark as dynamic once we have
determined that the context is Ok. */
static void
objc_add_dynamic_declaration_for_property (location_t location, tree interface,
tree property_name)
{
/* Find the @property declaration. */
tree property;
 
/* Check that synthesize or dynamic has not already been used for
the same property. */
for (property = IMPL_PROPERTY_DECL (objc_implementation_context); property; property = TREE_CHAIN (property))
if (PROPERTY_NAME (property) == property_name)
{
location_t original_location = DECL_SOURCE_LOCATION (property);
 
if (PROPERTY_DYNAMIC (property))
error_at (location, "property %qs already specified in %<@dynamic%>",
IDENTIFIER_POINTER (property_name));
else
error_at (location, "property %qs already specified in %<@synthesize%>",
IDENTIFIER_POINTER (property_name));
 
if (original_location != UNKNOWN_LOCATION)
inform (original_location, "originally specified here");
return;
}
 
/* Check that the property is declared in the interface. It could
also be declared in a superclass or protocol. */
property = lookup_property (interface, property_name);
 
if (!property)
{
error_at (location, "no declaration of property %qs found in the interface",
IDENTIFIER_POINTER (property_name));
return;
}
else
{
/* We have to copy the property, because we want to chain it to
the implementation context, and we want to store the source
location of the @synthesize, not of the original
@property. */
property = copy_node (property);
DECL_SOURCE_LOCATION (property) = location;
}
 
/* Note that a @dynamic (and only a @dynamic) always sets
PROPERTY_DYNAMIC to 1. You can recognize a @dynamic by that.
(actually, as explained above, PROPERTY_DECL generated by
@property and associated with a @dynamic property are also marked
as PROPERTY_DYNAMIC). */
PROPERTY_DYNAMIC (property) = 1;
 
/* Add the property to the list of properties for current implementation. */
TREE_CHAIN (property) = IMPL_PROPERTY_DECL (objc_implementation_context);
IMPL_PROPERTY_DECL (objc_implementation_context) = property;
}
 
/* This function is called by the parser after a @dynamic expression
is parsed. 'location' is the location of the @dynamic expression,
and 'property_list' is a chained list of all the property
names. */
void
objc_add_dynamic_declaration (location_t location, tree property_list)
{
tree interface, chain;
 
if (flag_objc1_only)
error_at (input_location, "%<@dynamic%> is not available in Objective-C 1.0");
 
if (property_list == error_mark_node)
return;
 
if (!objc_implementation_context)
{
/* We can get here only in Objective-C; the Objective-C++ parser
detects the problem while parsing, outputs the error
"misplaced '@dynamic' Objective-C++ construct" and skips the
declaration. */
error_at (location, "%<@dynamic%> not in @implementation context");
return;
}
 
/* @dynamic is allowed in categories. */
switch (TREE_CODE (objc_implementation_context))
{
case CLASS_IMPLEMENTATION_TYPE:
interface = lookup_interface (CLASS_NAME (objc_implementation_context));
break;
case CATEGORY_IMPLEMENTATION_TYPE:
interface = lookup_category (implementation_template,
CLASS_SUPER_NAME (objc_implementation_context));
break;
default:
gcc_unreachable ();
}
 
if (!interface)
{
/* I can't see how this could happen, but it is good as a safety check. */
error_at (location,
"%<@dynamic%> requires the @interface of the class to be available");
return;
}
 
/* Now, iterate over the properties and do each of them. */
for (chain = property_list; chain; chain = TREE_CHAIN (chain))
{
objc_add_dynamic_declaration_for_property (location, interface, TREE_VALUE (chain));
}
}
 
/* Main routine to generate code/data for all the property information for
current implementation (class or category). CLASS is the interface where
ivars are declared. CLASS_METHODS is where methods are found which
could be a class or a category depending on whether we are implementing
property of a class or a category. */
 
static void
objc_gen_property_data (tree klass, tree class_methods)
{
tree x;
 
for (x = IMPL_PROPERTY_DECL (objc_implementation_context); x; x = TREE_CHAIN (x))
{
/* @dynamic property - nothing to check or synthesize. */
if (PROPERTY_DYNAMIC (x))
continue;
 
/* @synthesize property - need to synthesize the accessors. */
if (PROPERTY_IVAR_NAME (x))
{
objc_synthesize_getter (klass, class_methods, x);
 
if (PROPERTY_READONLY (x) == 0)
objc_synthesize_setter (klass, class_methods, x);
 
continue;
}
 
gcc_unreachable ();
}
}
 
/* This is called once we see the "@end" in an interface/implementation. */
 
static void
finish_class (tree klass)
{
switch (TREE_CODE (klass))
{
case CLASS_IMPLEMENTATION_TYPE:
{
/* All metadata generation is done in runtime.generate_metadata(). */
 
/* Generate what needed for property; setters, getters, etc. */
objc_gen_property_data (implementation_template, implementation_template);
 
if (implementation_template != objc_implementation_context)
{
/* Ensure that all method listed in the interface contain bodies. */
check_methods (CLASS_CLS_METHODS (implementation_template),
objc_implementation_context, '+');
check_methods (CLASS_NST_METHODS (implementation_template),
objc_implementation_context, '-');
 
if (CLASS_PROTOCOL_LIST (implementation_template))
check_protocols (CLASS_PROTOCOL_LIST (implementation_template),
"class",
CLASS_NAME (objc_implementation_context));
}
break;
}
case CATEGORY_IMPLEMENTATION_TYPE:
{
tree category = lookup_category (implementation_template, CLASS_SUPER_NAME (klass));
 
if (category)
{
/* Generate what needed for property; setters, getters, etc. */
objc_gen_property_data (implementation_template, category);
 
/* Ensure all method listed in the interface contain bodies. */
check_methods (CLASS_CLS_METHODS (category),
objc_implementation_context, '+');
check_methods (CLASS_NST_METHODS (category),
objc_implementation_context, '-');
 
if (CLASS_PROTOCOL_LIST (category))
check_protocols (CLASS_PROTOCOL_LIST (category),
"category",
CLASS_SUPER_NAME (objc_implementation_context));
}
break;
}
case CLASS_INTERFACE_TYPE:
case CATEGORY_INTERFACE_TYPE:
case PROTOCOL_INTERFACE_TYPE:
{
/* Process properties of the class. */
tree x;
for (x = CLASS_PROPERTY_DECL (objc_interface_context); x; x = TREE_CHAIN (x))
{
/* Now we check that the appropriate getter is declared,
and if not, we declare one ourselves. */
tree getter_decl = lookup_method (CLASS_NST_METHODS (klass),
PROPERTY_GETTER_NAME (x));
 
if (getter_decl)
{
/* TODO: Check that the declaration is consistent with the property. */
;
}
else
{
/* Generate an instance method declaration for the
getter; for example "- (id) name;". In general it
will be of the form
-(type)property_getter_name; */
tree rettype = build_tree_list (NULL_TREE, TREE_TYPE (x));
getter_decl = build_method_decl (INSTANCE_METHOD_DECL,
rettype, PROPERTY_GETTER_NAME (x),
NULL_TREE, false);
if (PROPERTY_OPTIONAL (x))
objc_add_method (objc_interface_context, getter_decl, false, true);
else
objc_add_method (objc_interface_context, getter_decl, false, false);
TREE_DEPRECATED (getter_decl) = TREE_DEPRECATED (x);
METHOD_PROPERTY_CONTEXT (getter_decl) = x;
}
 
if (PROPERTY_READONLY (x) == 0)
{
/* Now we check that the appropriate setter is declared,
and if not, we declare on ourselves. */
tree setter_decl = lookup_method (CLASS_NST_METHODS (klass),
PROPERTY_SETTER_NAME (x));
 
if (setter_decl)
{
/* TODO: Check that the declaration is consistent with the property. */
;
}
else
{
/* The setter name is something like 'setName:'.
We need the substring 'setName' to build the
method declaration due to how the declaration
works. TODO: build_method_decl() will then
generate back 'setName:' from 'setName'; it
would be more efficient to hook into there. */
const char *full_setter_name = IDENTIFIER_POINTER (PROPERTY_SETTER_NAME (x));
size_t length = strlen (full_setter_name);
char *setter_name = (char *) alloca (length);
tree ret_type, selector, arg_type, arg_name;
 
strcpy (setter_name, full_setter_name);
setter_name[length - 1] = '\0';
ret_type = build_tree_list (NULL_TREE, void_type_node);
arg_type = build_tree_list (NULL_TREE, TREE_TYPE (x));
arg_name = get_identifier ("_value");
selector = objc_build_keyword_decl (get_identifier (setter_name),
arg_type, arg_name, NULL);
setter_decl = build_method_decl (INSTANCE_METHOD_DECL,
ret_type, selector,
build_tree_list (NULL_TREE, NULL_TREE),
false);
if (PROPERTY_OPTIONAL (x))
objc_add_method (objc_interface_context, setter_decl, false, true);
else
objc_add_method (objc_interface_context, setter_decl, false, false);
TREE_DEPRECATED (setter_decl) = TREE_DEPRECATED (x);
METHOD_PROPERTY_CONTEXT (setter_decl) = x;
}
}
}
break;
}
default:
gcc_unreachable ();
break;
}
}
 
static tree
add_protocol (tree protocol)
{
/* Put protocol on list in reverse order. */
TREE_CHAIN (protocol) = protocol_chain;
protocol_chain = protocol;
return protocol_chain;
}
 
/* Check that a protocol is defined, and, recursively, that all
protocols that this protocol conforms to are defined too. */
static void
check_that_protocol_is_defined (tree protocol)
{
if (!PROTOCOL_DEFINED (protocol))
warning (0, "definition of protocol %qE not found",
PROTOCOL_NAME (protocol));
 
/* If the protocol itself conforms to other protocols, check them
too, recursively. */
if (PROTOCOL_LIST (protocol))
{
tree p;
 
for (p = PROTOCOL_LIST (protocol); p; p = TREE_CHAIN (p))
check_that_protocol_is_defined (TREE_VALUE (p));
}
}
 
/* Looks up a protocol. If 'warn_if_deprecated' is true, a warning is
emitted if the protocol is deprecated. If 'definition_required' is
true, a warning is emitted if a full @protocol definition has not
been seen. */
static tree
lookup_protocol (tree ident, bool warn_if_deprecated, bool definition_required)
{
tree chain;
 
for (chain = protocol_chain; chain; chain = TREE_CHAIN (chain))
if (ident == PROTOCOL_NAME (chain))
{
if (warn_if_deprecated && TREE_DEPRECATED (chain))
{
/* It would be nice to use warn_deprecated_use() here, but
we are using TREE_CHAIN (which is supposed to be the
TYPE_STUB_DECL for a TYPE) for something different. */
warning (OPT_Wdeprecated_declarations, "protocol %qE is deprecated",
PROTOCOL_NAME (chain));
}
 
if (definition_required)
check_that_protocol_is_defined (chain);
 
return chain;
}
 
return NULL_TREE;
}
 
/* This function forward declares the protocols named by NAMES. If
they are already declared or defined, the function has no effect. */
 
void
objc_declare_protocol (tree name, tree attributes)
{
bool deprecated = false;
 
#ifdef OBJCPLUS
if (current_namespace != global_namespace) {
error ("Objective-C declarations may only appear in global scope");
}
#endif /* OBJCPLUS */
 
/* Determine if 'deprecated', the only attribute we recognize for
protocols, was used. Ignore all other attributes. */
if (attributes)
{
tree attribute;
for (attribute = attributes; attribute; attribute = TREE_CHAIN (attribute))
{
tree name = TREE_PURPOSE (attribute);
 
if (is_attribute_p ("deprecated", name))
deprecated = true;
else
warning (OPT_Wattributes, "%qE attribute directive ignored", name);
}
}
 
if (lookup_protocol (name, /* warn if deprecated */ false,
/* definition_required */ false) == NULL_TREE)
{
tree protocol = make_node (PROTOCOL_INTERFACE_TYPE);
 
TYPE_LANG_SLOT_1 (protocol)
= make_tree_vec (PROTOCOL_LANG_SLOT_ELTS);
PROTOCOL_NAME (protocol) = name;
PROTOCOL_LIST (protocol) = NULL_TREE;
add_protocol (protocol);
PROTOCOL_DEFINED (protocol) = 0;
PROTOCOL_FORWARD_DECL (protocol) = NULL_TREE;
 
if (attributes)
{
/* TODO: Do we need to store the attributes here ? */
TYPE_ATTRIBUTES (protocol) = attributes;
if (deprecated)
TREE_DEPRECATED (protocol) = 1;
}
}
}
 
static tree
start_protocol (enum tree_code code, tree name, tree list, tree attributes)
{
tree protocol;
bool deprecated = false;
 
#ifdef OBJCPLUS
if (current_namespace != global_namespace) {
error ("Objective-C declarations may only appear in global scope");
}
#endif /* OBJCPLUS */
 
/* Determine if 'deprecated', the only attribute we recognize for
protocols, was used. Ignore all other attributes. */
if (attributes)
{
tree attribute;
for (attribute = attributes; attribute; attribute = TREE_CHAIN (attribute))
{
tree name = TREE_PURPOSE (attribute);
 
if (is_attribute_p ("deprecated", name))
deprecated = true;
else
warning (OPT_Wattributes, "%qE attribute directive ignored", name);
}
}
 
protocol = lookup_protocol (name, /* warn_if_deprecated */ false,
/* definition_required */ false);
 
if (!protocol)
{
protocol = make_node (code);
TYPE_LANG_SLOT_1 (protocol) = make_tree_vec (PROTOCOL_LANG_SLOT_ELTS);
 
PROTOCOL_NAME (protocol) = name;
PROTOCOL_LIST (protocol) = lookup_and_install_protocols (list, /* definition_required */ false);
add_protocol (protocol);
PROTOCOL_DEFINED (protocol) = 1;
PROTOCOL_FORWARD_DECL (protocol) = NULL_TREE;
 
check_protocol_recursively (protocol, list);
}
else if (! PROTOCOL_DEFINED (protocol))
{
PROTOCOL_DEFINED (protocol) = 1;
PROTOCOL_LIST (protocol) = lookup_and_install_protocols (list, /* definition_required */ false);
 
check_protocol_recursively (protocol, list);
}
else
{
warning (0, "duplicate declaration for protocol %qE",
name);
}
 
if (attributes)
{
TYPE_ATTRIBUTES (protocol) = attributes;
if (deprecated)
TREE_DEPRECATED (protocol) = 1;
}
 
return protocol;
}
 
/* Decay array and function parameters into pointers. */
 
static tree
objc_decay_parm_type (tree type)
{
if (TREE_CODE (type) == ARRAY_TYPE || TREE_CODE (type) == FUNCTION_TYPE)
type = build_pointer_type (TREE_CODE (type) == ARRAY_TYPE
? TREE_TYPE (type)
: type);
 
return type;
}
 
static GTY(()) tree objc_parmlist = NULL_TREE;
 
/* Append PARM to a list of formal parameters of a method, making a necessary
array-to-pointer adjustment along the way. */
 
void
objc_push_parm (tree parm)
{
tree type;
 
if (TREE_TYPE (parm) == error_mark_node)
{
objc_parmlist = chainon (objc_parmlist, parm);
return;
}
 
/* Decay arrays and functions into pointers. */
type = objc_decay_parm_type (TREE_TYPE (parm));
 
/* If the parameter type has been decayed, a new PARM_DECL needs to be
built as well. */
if (type != TREE_TYPE (parm))
parm = build_decl (input_location, PARM_DECL, DECL_NAME (parm), type);
 
DECL_ARG_TYPE (parm)
= lang_hooks.types.type_promotes_to (TREE_TYPE (parm));
 
/* Record constancy and volatility. */
c_apply_type_quals_to_decl
((TYPE_READONLY (TREE_TYPE (parm)) ? TYPE_QUAL_CONST : 0)
| (TYPE_RESTRICT (TREE_TYPE (parm)) ? TYPE_QUAL_RESTRICT : 0)
| (TYPE_VOLATILE (TREE_TYPE (parm)) ? TYPE_QUAL_VOLATILE : 0), parm);
 
objc_parmlist = chainon (objc_parmlist, parm);
}
 
/* Retrieve the formal parameter list constructed via preceding calls to
objc_push_parm(). */
 
#ifdef OBJCPLUS
tree
objc_get_parm_info (int have_ellipsis ATTRIBUTE_UNUSED,
tree expr ATTRIBUTE_UNUSED)
{
tree parm_info = objc_parmlist;
objc_parmlist = NULL_TREE;
 
return parm_info;
}
#else
struct c_arg_info *
objc_get_parm_info (int have_ellipsis, tree expr)
{
tree parm_info = objc_parmlist;
struct c_arg_info *arg_info;
/* The C front-end requires an elaborate song and dance at
this point. */
push_scope ();
declare_parm_level ();
while (parm_info)
{
tree next = DECL_CHAIN (parm_info);
 
DECL_CHAIN (parm_info) = NULL_TREE;
parm_info = pushdecl (parm_info);
finish_decl (parm_info, input_location, NULL_TREE, NULL_TREE, NULL_TREE);
parm_info = next;
}
arg_info = get_parm_info (have_ellipsis, expr);
pop_scope ();
objc_parmlist = NULL_TREE;
return arg_info;
}
#endif
 
/* Synthesize the formal parameters 'id self' and 'SEL _cmd' needed for ObjC
method definitions. In the case of instance methods, we can be more
specific as to the type of 'self'. */
 
static void
synth_self_and_ucmd_args (void)
{
tree self_type;
 
if (objc_method_context
&& TREE_CODE (objc_method_context) == INSTANCE_METHOD_DECL)
self_type = objc_instance_type;
else
/* Really a `struct objc_class *'. However, we allow people to
assign to self, which changes its type midstream. */
self_type = objc_object_type;
 
/* id self; */
objc_push_parm (build_decl (input_location,
PARM_DECL, self_id, self_type));
 
/* SEL _cmd; */
objc_push_parm (build_decl (input_location,
PARM_DECL, ucmd_id, objc_selector_type));
}
 
/* Transform an Objective-C method definition into a static C function
definition, synthesizing the first two arguments, "self" and "_cmd",
in the process. EXPR is NULL or an expression that needs to be
evaluated for the side effects of array size expressions in the
parameters. */
 
static void
start_method_def (tree method, tree expr)
{
tree parmlist;
#ifdef OBJCPLUS
tree parm_info;
#else
struct c_arg_info *parm_info;
#endif
int have_ellipsis = 0;
 
/* If we are defining a "dealloc" method in a non-root class, we
will need to check if a [super dealloc] is missing, and warn if
it is. */
if(CLASS_SUPER_NAME (objc_implementation_context)
&& !strcmp ("dealloc", IDENTIFIER_POINTER (METHOD_SEL_NAME (method))))
should_call_super_dealloc = 1;
else
should_call_super_dealloc = 0;
 
/* Required to implement _msgSuper. */
objc_method_context = method;
UOBJC_SUPER_decl = NULL_TREE;
 
/* Generate prototype declarations for arguments..."new-style". */
synth_self_and_ucmd_args ();
 
/* Generate argument declarations if a keyword_decl. */
parmlist = METHOD_SEL_ARGS (method);
while (parmlist)
{
/* parmlist is a KEYWORD_DECL. */
tree type = TREE_VALUE (TREE_TYPE (parmlist));
tree parm;
 
parm = build_decl (input_location,
PARM_DECL, KEYWORD_ARG_NAME (parmlist), type);
decl_attributes (&parm, DECL_ATTRIBUTES (parmlist), 0);
objc_push_parm (parm);
parmlist = DECL_CHAIN (parmlist);
}
 
if (METHOD_ADD_ARGS (method))
{
tree akey;
 
for (akey = TREE_CHAIN (METHOD_ADD_ARGS (method));
akey; akey = TREE_CHAIN (akey))
{
objc_push_parm (TREE_VALUE (akey));
}
 
if (METHOD_ADD_ARGS_ELLIPSIS_P (method))
have_ellipsis = 1;
}
 
parm_info = objc_get_parm_info (have_ellipsis, expr);
 
really_start_method (objc_method_context, parm_info);
}
 
/* Return 1 if TYPE1 is equivalent to TYPE2 for purposes of method
overloading. */
static int
objc_types_are_equivalent (tree type1, tree type2)
{
if (type1 == type2)
return 1;
 
/* Strip away indirections. */
while ((TREE_CODE (type1) == ARRAY_TYPE || TREE_CODE (type1) == POINTER_TYPE)
&& (TREE_CODE (type1) == TREE_CODE (type2)))
type1 = TREE_TYPE (type1), type2 = TREE_TYPE (type2);
if (TYPE_MAIN_VARIANT (type1) != TYPE_MAIN_VARIANT (type2))
return 0;
 
/* Compare the protocol lists. */
type1 = (TYPE_HAS_OBJC_INFO (type1)
? TYPE_OBJC_PROTOCOL_LIST (type1)
: NULL_TREE);
type2 = (TYPE_HAS_OBJC_INFO (type2)
? TYPE_OBJC_PROTOCOL_LIST (type2)
: NULL_TREE);
 
/* If there are no protocols (most common case), the types are
identical. */
if (type1 == NULL_TREE && type2 == NULL_TREE)
return 1;
 
/* If one has protocols, and the other one hasn't, they are not
identical. */
if ((type1 == NULL_TREE && type2 != NULL_TREE)
|| (type1 != NULL_TREE && type2 == NULL_TREE))
return 0;
else
{
/* Else, both have protocols, and we need to do the full
comparison. It is possible that either type1 or type2
contain some duplicate protocols in the list, so we can't
even just compare list_length as a first check. */
tree t;
 
for (t = type2; t; t = TREE_CHAIN (t))
if (!lookup_protocol_in_reflist (type1, TREE_VALUE (t)))
return 0;
 
for (t = type1; t; t = TREE_CHAIN (t))
if (!lookup_protocol_in_reflist (type2, TREE_VALUE (t)))
return 0;
 
return 1;
}
}
 
/* Return 1 if TYPE1 has the same size and alignment as TYPE2. */
 
static int
objc_types_share_size_and_alignment (tree type1, tree type2)
{
return (simple_cst_equal (TYPE_SIZE (type1), TYPE_SIZE (type2))
&& TYPE_ALIGN (type1) == TYPE_ALIGN (type2));
}
 
/* Return 1 if PROTO1 is equivalent to PROTO2
for purposes of method overloading. Ordinarily, the type signatures
should match up exactly, unless STRICT is zero, in which case we
shall allow differences in which the size and alignment of a type
is the same. */
 
static int
comp_proto_with_proto (tree proto1, tree proto2, int strict)
{
tree type1, type2;
 
/* The following test is needed in case there are hashing
collisions. */
if (METHOD_SEL_NAME (proto1) != METHOD_SEL_NAME (proto2))
return 0;
 
/* Compare return types. */
type1 = TREE_VALUE (TREE_TYPE (proto1));
type2 = TREE_VALUE (TREE_TYPE (proto2));
 
if (!objc_types_are_equivalent (type1, type2)
&& (strict || !objc_types_share_size_and_alignment (type1, type2)))
return 0;
 
/* Compare argument types. */
 
/* The first argument (objc_object_type) is always the same, no need
to compare. */
 
/* The second argument (objc_selector_type) is always the same, no
need to compare. */
 
/* Compare the other arguments. */
{
tree arg1, arg2;
 
/* Compare METHOD_SEL_ARGS. */
for (arg1 = METHOD_SEL_ARGS (proto1), arg2 = METHOD_SEL_ARGS (proto2);
arg1 && arg2;
arg1 = DECL_CHAIN (arg1), arg2 = DECL_CHAIN (arg2))
{
type1 = TREE_VALUE (TREE_TYPE (arg1));
type2 = TREE_VALUE (TREE_TYPE (arg2));
 
/* FIXME: Do we need to decay argument types to compare them ? */
type1 = objc_decay_parm_type (type1);
type2 = objc_decay_parm_type (type2);
 
if (!objc_types_are_equivalent (type1, type2)
&& (strict || !objc_types_share_size_and_alignment (type1, type2)))
return 0;
}
 
/* The loop ends when arg1 or arg2 are NULL. Make sure they are
both NULL. */
if (arg1 != arg2)
return 0;
 
/* Compare METHOD_ADD_ARGS. */
if ((METHOD_ADD_ARGS (proto1) && !METHOD_ADD_ARGS (proto2))
|| (METHOD_ADD_ARGS (proto2) && !METHOD_ADD_ARGS (proto1)))
return 0;
 
if (METHOD_ADD_ARGS (proto1))
{
for (arg1 = TREE_CHAIN (METHOD_ADD_ARGS (proto1)), arg2 = TREE_CHAIN (METHOD_ADD_ARGS (proto2));
arg1 && arg2;
arg1 = TREE_CHAIN (arg1), arg2 = TREE_CHAIN (arg2))
{
type1 = TREE_TYPE (TREE_VALUE (arg1));
type2 = TREE_TYPE (TREE_VALUE (arg2));
 
/* FIXME: Do we need to decay argument types to compare them ? */
type1 = objc_decay_parm_type (type1);
type2 = objc_decay_parm_type (type2);
 
if (!objc_types_are_equivalent (type1, type2)
&& (strict || !objc_types_share_size_and_alignment (type1, type2)))
return 0;
}
}
 
/* The loop ends when arg1 or arg2 are NULL. Make sure they are
both NULL. */
if (arg1 != arg2)
return 0;
 
/* Compare METHOD_ADD_ARGS_ELLIPSIS_P. */
if (METHOD_ADD_ARGS_ELLIPSIS_P (proto1) != METHOD_ADD_ARGS_ELLIPSIS_P (proto2))
return 0;
}
 
/* Success. */
return 1;
}
 
/* This routine returns true if TYPE is a valid objc object type,
suitable for messaging; false otherwise. If 'accept_class' is
'true', then a Class object is considered valid for messaging and
'true' is returned if 'type' refers to a Class. If 'accept_class'
is 'false', then a Class object is not considered valid for
messaging and 'false' is returned in that case. */
 
static bool
objc_type_valid_for_messaging (tree type, bool accept_classes)
{
if (!POINTER_TYPE_P (type))
return false;
 
/* Remove the pointer indirection; don't remove more than one
otherwise we'd consider "NSObject **" a valid type for messaging,
which it isn't. */
type = TREE_TYPE (type);
 
if (TREE_CODE (type) != RECORD_TYPE)
return false;
 
if (objc_is_object_id (type))
return true;
 
if (objc_is_class_id (type))
return accept_classes;
 
if (TYPE_HAS_OBJC_INFO (type))
return true;
 
return false;
}
 
void
objc_start_function (tree name, tree type, tree attrs,
#ifdef OBJCPLUS
tree params
#else
struct c_arg_info *params
#endif
)
{
tree fndecl = build_decl (input_location,
FUNCTION_DECL, name, type);
 
#ifdef OBJCPLUS
DECL_ARGUMENTS (fndecl) = params;
DECL_INITIAL (fndecl) = error_mark_node;
DECL_EXTERNAL (fndecl) = 0;
TREE_STATIC (fndecl) = 1;
retrofit_lang_decl (fndecl);
cplus_decl_attributes (&fndecl, attrs, 0);
start_preparsed_function (fndecl, attrs, /*flags=*/SF_DEFAULT);
#else
current_function_returns_value = 0; /* Assume, until we see it does. */
current_function_returns_null = 0;
decl_attributes (&fndecl, attrs, 0);
announce_function (fndecl);
DECL_INITIAL (fndecl) = error_mark_node;
DECL_EXTERNAL (fndecl) = 0;
TREE_STATIC (fndecl) = 1;
current_function_decl = pushdecl (fndecl);
push_scope ();
declare_parm_level ();
DECL_RESULT (current_function_decl)
= build_decl (input_location,
RESULT_DECL, NULL_TREE,
TREE_TYPE (TREE_TYPE (current_function_decl)));
DECL_ARTIFICIAL (DECL_RESULT (current_function_decl)) = 1;
DECL_IGNORED_P (DECL_RESULT (current_function_decl)) = 1;
start_fname_decls ();
store_parm_decls_from (params);
#endif
 
TREE_USED (current_function_decl) = 1;
}
 
/* - Generate an identifier for the function. the format is "_n_cls",
where 1 <= n <= nMethods, and cls is the name the implementation we
are processing.
- Install the return type from the method declaration.
- If we have a prototype, check for type consistency. */
 
static void
really_start_method (tree method,
#ifdef OBJCPLUS
tree parmlist
#else
struct c_arg_info *parmlist
#endif
)
{
tree ret_type, meth_type;
tree method_id;
const char *sel_name, *class_name, *cat_name;
char *buf;
 
/* Synth the storage class & assemble the return type. */
ret_type = TREE_VALUE (TREE_TYPE (method));
 
sel_name = IDENTIFIER_POINTER (METHOD_SEL_NAME (method));
class_name = IDENTIFIER_POINTER (CLASS_NAME (objc_implementation_context));
cat_name = ((TREE_CODE (objc_implementation_context)
== CLASS_IMPLEMENTATION_TYPE)
? NULL
: IDENTIFIER_POINTER (CLASS_SUPER_NAME (objc_implementation_context)));
method_slot++;
 
/* Make sure this is big enough for any plausible method label. */
buf = (char *) alloca (50 + strlen (sel_name) + strlen (class_name)
+ (cat_name ? strlen (cat_name) : 0));
 
OBJC_GEN_METHOD_LABEL (buf, TREE_CODE (method) == INSTANCE_METHOD_DECL,
class_name, cat_name, sel_name, method_slot);
 
method_id = get_identifier (buf);
 
#ifdef OBJCPLUS
/* Objective-C methods cannot be overloaded, so we don't need
the type encoding appended. It looks bad anyway... */
push_lang_context (lang_name_c);
#endif
 
meth_type = build_function_type_for_method (ret_type, method, METHOD_DEF, 0);
objc_start_function (method_id, meth_type, NULL_TREE, parmlist);
 
/* Set self_decl from the first argument. */
self_decl = DECL_ARGUMENTS (current_function_decl);
 
/* Suppress unused warnings. */
TREE_USED (self_decl) = 1;
DECL_READ_P (self_decl) = 1;
TREE_USED (DECL_CHAIN (self_decl)) = 1;
DECL_READ_P (DECL_CHAIN (self_decl)) = 1;
#ifdef OBJCPLUS
pop_lang_context ();
#endif
 
METHOD_DEFINITION (method) = current_function_decl;
 
/* Check consistency...start_function, pushdecl, duplicate_decls. */
 
if (implementation_template != objc_implementation_context)
{
tree proto
= lookup_method_static (implementation_template,
METHOD_SEL_NAME (method),
((TREE_CODE (method) == CLASS_METHOD_DECL)
| OBJC_LOOKUP_NO_SUPER));
 
if (proto)
{
if (!comp_proto_with_proto (method, proto, 1))
{
bool type = TREE_CODE (method) == INSTANCE_METHOD_DECL;
 
warning_at (DECL_SOURCE_LOCATION (method), 0,
"conflicting types for %<%c%s%>",
(type ? '-' : '+'),
identifier_to_locale (gen_method_decl (method)));
inform (DECL_SOURCE_LOCATION (proto),
"previous declaration of %<%c%s%>",
(type ? '-' : '+'),
identifier_to_locale (gen_method_decl (proto)));
}
else
{
/* If the method in the @interface was deprecated, mark
the implemented method as deprecated too. It should
never be used for messaging (when the deprecation
warnings are produced), but just in case. */
if (TREE_DEPRECATED (proto))
TREE_DEPRECATED (method) = 1;
 
/* If the method in the @interface was marked as
'noreturn', mark the function implementing the method
as 'noreturn' too. */
TREE_THIS_VOLATILE (current_function_decl) = TREE_THIS_VOLATILE (proto);
}
}
else
{
/* We have a method @implementation even though we did not
see a corresponding @interface declaration (which is allowed
by Objective-C rules). Go ahead and place the method in
the @interface anyway, so that message dispatch lookups
will see it. */
tree interface = implementation_template;
 
if (TREE_CODE (objc_implementation_context)
== CATEGORY_IMPLEMENTATION_TYPE)
interface = lookup_category
(interface,
CLASS_SUPER_NAME (objc_implementation_context));
 
if (interface)
objc_add_method (interface, copy_node (method),
TREE_CODE (method) == CLASS_METHOD_DECL,
/* is_optional= */ false);
}
}
}
 
static void *UOBJC_SUPER_scope = 0;
 
/* _n_Method (id self, SEL sel, ...)
{
struct objc_super _S;
_msgSuper ((_S.self = self, _S.class = _cls, &_S), ...);
} */
 
static tree
get_super_receiver (void)
{
if (objc_method_context)
{
tree super_expr, super_expr_list, class_expr;
bool inst_meth;
if (!UOBJC_SUPER_decl)
{
UOBJC_SUPER_decl = build_decl (input_location,
VAR_DECL, get_identifier (TAG_SUPER),
objc_super_template);
/* This prevents `unused variable' warnings when compiling with -Wall. */
TREE_USED (UOBJC_SUPER_decl) = 1;
DECL_READ_P (UOBJC_SUPER_decl) = 1;
lang_hooks.decls.pushdecl (UOBJC_SUPER_decl);
finish_decl (UOBJC_SUPER_decl, input_location, NULL_TREE, NULL_TREE,
NULL_TREE);
UOBJC_SUPER_scope = objc_get_current_scope ();
}
 
/* Set receiver to self. */
super_expr = objc_build_component_ref (UOBJC_SUPER_decl, self_id);
super_expr = build_modify_expr (input_location, super_expr, NULL_TREE,
NOP_EXPR, input_location, self_decl,
NULL_TREE);
super_expr_list = super_expr;
 
/* Set class to begin searching. */
/* Get the ident for the superclass class field & build a ref to it.
??? maybe we should just name the field the same for all runtimes. */
super_expr = (*runtime.super_superclassfield_ident) ();
super_expr = objc_build_component_ref (UOBJC_SUPER_decl, super_expr);
 
gcc_assert (imp_list->imp_context == objc_implementation_context
&& imp_list->imp_template == implementation_template);
inst_meth = (TREE_CODE (objc_method_context) == INSTANCE_METHOD_DECL);
 
if (TREE_CODE (objc_implementation_context) == CLASS_IMPLEMENTATION_TYPE)
class_expr = (*runtime.get_class_super_ref) (input_location,
imp_list, inst_meth);
else
/* We have a category. */
{
tree super_name = CLASS_SUPER_NAME (imp_list->imp_template);
tree super_class;
 
/* Barf if super used in a category of a root object. */
if (!super_name)
{
error ("no super class declared in interface for %qE",
CLASS_NAME (imp_list->imp_template));
return error_mark_node;
}
 
super_class = (*runtime.get_category_super_ref) (input_location,
imp_list, inst_meth);
class_expr = build_c_cast (input_location,
TREE_TYPE (super_expr), super_class);
}
 
super_expr = build_modify_expr (input_location, super_expr, NULL_TREE,
NOP_EXPR,
input_location, class_expr, NULL_TREE);
 
super_expr_list = build_compound_expr (input_location,
super_expr_list, super_expr);
 
super_expr = build_unary_op (input_location,
ADDR_EXPR, UOBJC_SUPER_decl, 0);
super_expr_list = build_compound_expr (input_location,
super_expr_list, super_expr);
 
return super_expr_list;
}
else
{
error ("[super ...] must appear in a method context");
return error_mark_node;
}
}
 
/* When exiting a scope, sever links to a 'super' declaration (if any)
therein contained. */
 
void
objc_clear_super_receiver (void)
{
if (objc_method_context
&& UOBJC_SUPER_scope == objc_get_current_scope ())
{
UOBJC_SUPER_decl = 0;
UOBJC_SUPER_scope = 0;
}
}
 
void
objc_finish_method_definition (tree fndecl)
{
/* We cannot validly inline ObjC methods, at least not without a language
extension to declare that a method need not be dynamically
dispatched, so suppress all thoughts of doing so. */
DECL_UNINLINABLE (fndecl) = 1;
 
#ifndef OBJCPLUS
/* The C++ front-end will have called finish_function() for us. */
finish_function ();
#endif
 
METHOD_ENCODING (objc_method_context)
= encode_method_prototype (objc_method_context);
 
/* Required to implement _msgSuper. This must be done AFTER finish_function,
since the optimizer may find "may be used before set" errors. */
objc_method_context = NULL_TREE;
 
if (should_call_super_dealloc)
warning (0, "method possibly missing a [super dealloc] call");
}
 
/* Given a tree DECL node, produce a printable description of it in the given
buffer, overwriting the buffer. */
 
static char *
gen_declaration (tree decl)
{
errbuf[0] = '\0';
 
if (DECL_P (decl))
{
gen_type_name_0 (TREE_TYPE (decl));
 
if (DECL_NAME (decl))
{
if (!POINTER_TYPE_P (TREE_TYPE (decl)))
strcat (errbuf, " ");
 
strcat (errbuf, IDENTIFIER_POINTER (DECL_NAME (decl)));
}
 
if (DECL_INITIAL (decl)
&& TREE_CODE (DECL_INITIAL (decl)) == INTEGER_CST)
sprintf (errbuf + strlen (errbuf), ": " HOST_WIDE_INT_PRINT_DEC,
TREE_INT_CST_LOW (DECL_INITIAL (decl)));
}
 
return errbuf;
}
 
/* Given a tree TYPE node, produce a printable description of it in the given
buffer, overwriting the buffer. */
 
static char *
gen_type_name_0 (tree type)
{
tree orig = type, proto;
 
if (TYPE_P (type) && TYPE_NAME (type))
type = TYPE_NAME (type);
else if (POINTER_TYPE_P (type) || TREE_CODE (type) == ARRAY_TYPE)
{
tree inner = TREE_TYPE (type);
 
while (TREE_CODE (inner) == ARRAY_TYPE)
inner = TREE_TYPE (inner);
 
gen_type_name_0 (inner);
 
if (!POINTER_TYPE_P (inner))
strcat (errbuf, " ");
 
if (POINTER_TYPE_P (type))
strcat (errbuf, "*");
else
while (type != inner)
{
strcat (errbuf, "[");
 
if (TYPE_DOMAIN (type))
{
char sz[20];
 
sprintf (sz, HOST_WIDE_INT_PRINT_DEC,
(TREE_INT_CST_LOW
(TYPE_MAX_VALUE (TYPE_DOMAIN (type))) + 1));
strcat (errbuf, sz);
}
 
strcat (errbuf, "]");
type = TREE_TYPE (type);
}
 
goto exit_function;
}
 
if (TREE_CODE (type) == TYPE_DECL && DECL_NAME (type))
type = DECL_NAME (type);
 
strcat (errbuf, TREE_CODE (type) == IDENTIFIER_NODE
? IDENTIFIER_POINTER (type)
: "");
 
/* For 'id' and 'Class', adopted protocols are stored in the pointee. */
if (objc_is_id (orig))
orig = TREE_TYPE (orig);
 
proto = TYPE_HAS_OBJC_INFO (orig) ? TYPE_OBJC_PROTOCOL_LIST (orig) : NULL_TREE;
 
if (proto)
{
strcat (errbuf, " <");
 
while (proto) {
strcat (errbuf,
IDENTIFIER_POINTER (PROTOCOL_NAME (TREE_VALUE (proto))));
proto = TREE_CHAIN (proto);
strcat (errbuf, proto ? ", " : ">");
}
}
 
exit_function:
return errbuf;
}
 
static char *
gen_type_name (tree type)
{
errbuf[0] = '\0';
 
return gen_type_name_0 (type);
}
 
/* Given a method tree, put a printable description into the given
buffer (overwriting) and return a pointer to the buffer. */
 
static char *
gen_method_decl (tree method)
{
tree chain;
 
strcpy (errbuf, "("); /* NB: Do _not_ call strcat() here. */
gen_type_name_0 (TREE_VALUE (TREE_TYPE (method)));
strcat (errbuf, ")");
chain = METHOD_SEL_ARGS (method);
 
if (chain)
{
/* We have a chain of keyword_decls. */
do
{
if (KEYWORD_KEY_NAME (chain))
strcat (errbuf, IDENTIFIER_POINTER (KEYWORD_KEY_NAME (chain)));
 
strcat (errbuf, ":(");
gen_type_name_0 (TREE_VALUE (TREE_TYPE (chain)));
strcat (errbuf, ")");
 
strcat (errbuf, IDENTIFIER_POINTER (KEYWORD_ARG_NAME (chain)));
if ((chain = DECL_CHAIN (chain)))
strcat (errbuf, " ");
}
while (chain);
 
if (METHOD_ADD_ARGS (method))
{
chain = TREE_CHAIN (METHOD_ADD_ARGS (method));
 
/* Know we have a chain of parm_decls. */
while (chain)
{
strcat (errbuf, ", ");
gen_type_name_0 (TREE_TYPE (TREE_VALUE (chain)));
chain = TREE_CHAIN (chain);
}
 
if (METHOD_ADD_ARGS_ELLIPSIS_P (method))
strcat (errbuf, ", ...");
}
}
 
else
/* We have a unary selector. */
strcat (errbuf, IDENTIFIER_POINTER (METHOD_SEL_NAME (method)));
 
return errbuf;
}
/* Debug info. */
 
 
/* Dump an @interface declaration of the supplied class CHAIN to the
supplied file FP. Used to implement the -gen-decls option (which
prints out an @interface declaration of all classes compiled in
this run); potentially useful for debugging the compiler too. */
void
dump_interface (FILE *fp, tree chain)
{
/* FIXME: A heap overflow here whenever a method (or ivar)
declaration is so long that it doesn't fit in the buffer. The
code and all the related functions should be rewritten to avoid
using fixed size buffers. */
const char *my_name = IDENTIFIER_POINTER (CLASS_NAME (chain));
tree ivar_decls = CLASS_RAW_IVARS (chain);
tree nst_methods = CLASS_NST_METHODS (chain);
tree cls_methods = CLASS_CLS_METHODS (chain);
 
fprintf (fp, "\n@interface %s", my_name);
 
/* CLASS_SUPER_NAME is used to store the superclass name for
classes, and the category name for categories. */
if (CLASS_SUPER_NAME (chain))
{
const char *name = IDENTIFIER_POINTER (CLASS_SUPER_NAME (chain));
 
switch (TREE_CODE (chain))
{
case CATEGORY_IMPLEMENTATION_TYPE:
case CATEGORY_INTERFACE_TYPE:
fprintf (fp, " (%s)\n", name);
break;
default:
fprintf (fp, " : %s\n", name);
break;
}
}
else
fprintf (fp, "\n");
 
/* FIXME - the following doesn't seem to work at the moment. */
if (ivar_decls)
{
fprintf (fp, "{\n");
do
{
fprintf (fp, "\t%s;\n", gen_declaration (ivar_decls));
ivar_decls = TREE_CHAIN (ivar_decls);
}
while (ivar_decls);
fprintf (fp, "}\n");
}
 
while (nst_methods)
{
fprintf (fp, "- %s;\n", gen_method_decl (nst_methods));
nst_methods = TREE_CHAIN (nst_methods);
}
 
while (cls_methods)
{
fprintf (fp, "+ %s;\n", gen_method_decl (cls_methods));
cls_methods = TREE_CHAIN (cls_methods);
}
 
fprintf (fp, "@end\n");
}
 
#if 0
/* Produce the pretty printing for an Objective-C method. This is
currently unused, but could be handy while reorganizing the pretty
printing to be more robust. */
static const char *
objc_pretty_print_method (bool is_class_method,
const char *class_name,
const char *category_name,
const char *selector)
{
if (category_name)
{
char *result = XNEWVEC (char, strlen (class_name) + strlen (category_name)
+ strlen (selector) + 7);
 
if (is_class_method)
sprintf (result, "+[%s(%s) %s]", class_name, category_name, selector);
else
sprintf (result, "-[%s(%s) %s]", class_name, category_name, selector);
 
return result;
}
else
{
char *result = XNEWVEC (char, strlen (class_name)
+ strlen (selector) + 5);
 
if (is_class_method)
sprintf (result, "+[%s %s]", class_name, selector);
else
sprintf (result, "-[%s %s]", class_name, selector);
 
return result;
}
}
#endif
 
/* Demangle function for Objective-C. Attempt to demangle the
function name associated with a method (eg, going from
"_i_NSObject__class" to "-[NSObject class]"); usually for the
purpose of pretty printing or error messages. Return the demangled
name, or NULL if the string is not an Objective-C mangled method
name.
 
Because of how the mangling is done, any method that has a '_' in
its original name is at risk of being demangled incorrectly. In
some cases there are multiple valid ways to demangle a method name
and there is no way we can decide.
 
TODO: objc_demangle() can't always get it right; the right way to
get this correct for all method names would be to store the
Objective-C method name somewhere in the function decl. Then,
there is no demangling to do; we'd just pull the method name out of
the decl. As an additional bonus, when printing error messages we
could check for such a method name, and if we find it, we know the
function is actually an Objective-C method and we could print error
messages saying "In method '+[NSObject class]" instead of "In
function '+[NSObject class]" as we do now. */
static const char *
objc_demangle (const char *mangled)
{
char *demangled, *cp;
 
/* First of all, if the name is too short it can't be an Objective-C
mangled method name. */
if (mangled[0] == '\0' || mangled[1] == '\0' || mangled[2] == '\0')
return NULL;
 
/* If the name looks like an already demangled one, return it
unchanged. This should only happen on Darwin, where method names
are mangled differently into a pretty-print form (such as
'+[NSObject class]', see darwin.h). In that case, demangling is
a no-op, but we need to return the demangled name if it was an
ObjC one, and return NULL if not. We should be safe as no C/C++
function can start with "-[" or "+[". */
if ((mangled[0] == '-' || mangled[0] == '+')
&& (mangled[1] == '['))
return mangled;
 
if (mangled[0] == '_' &&
(mangled[1] == 'i' || mangled[1] == 'c') &&
mangled[2] == '_')
{
cp = demangled = XNEWVEC (char, strlen(mangled) + 2);
if (mangled[1] == 'i')
*cp++ = '-'; /* for instance method */
else
*cp++ = '+'; /* for class method */
*cp++ = '['; /* opening left brace */
strcpy(cp, mangled+3); /* tack on the rest of the mangled name */
while (*cp && *cp == '_')
cp++; /* skip any initial underbars in class name */
cp = strchr(cp, '_'); /* find first non-initial underbar */
if (cp == NULL)
{
free(demangled); /* not mangled name */
return NULL;
}
if (cp[1] == '_') /* easy case: no category name */
{
*cp++ = ' '; /* replace two '_' with one ' ' */
strcpy(cp, mangled + (cp - demangled) + 2);
}
else
{
*cp++ = '('; /* less easy case: category name */
cp = strchr(cp, '_');
if (cp == 0)
{
free(demangled); /* not mangled name */
return NULL;
}
*cp++ = ')';
*cp++ = ' '; /* overwriting 1st char of method name... */
strcpy(cp, mangled + (cp - demangled)); /* get it back */
}
/* Now we have the method name. We need to generally replace
'_' with ':' but trying to preserve '_' if it could only have
been in the mangled string because it was already in the
original name. In cases where it's ambiguous, we assume that
any '_' originated from a ':'. */
 
/* Initial '_'s in method name can't have been generating by
converting ':'s. Skip them. */
while (*cp && *cp == '_')
cp++;
 
/* If the method name does not end with '_', then it has no
arguments and there was no replacement of ':'s with '_'s
during mangling. Check for that case, and skip any
replacement if so. This at least guarantees that methods
with no arguments are always demangled correctly (unless the
original name ends with '_'). */
if (*(mangled + strlen (mangled) - 1) != '_')
{
/* Skip to the end. */
for (; *cp; cp++)
;
}
else
{
/* Replace remaining '_' with ':'. This may get it wrong if
there were '_'s in the original name. In most cases it
is impossible to disambiguate. */
for (; *cp; cp++)
if (*cp == '_')
*cp = ':';
}
*cp++ = ']'; /* closing right brace */
*cp++ = 0; /* string terminator */
return demangled;
}
else
return NULL; /* not an objc mangled name */
}
 
/* Try to pretty-print a decl. If the 'decl' is an Objective-C
specific decl, return the printable name for it. If not, return
NULL. */
const char *
objc_maybe_printable_name (tree decl, int v ATTRIBUTE_UNUSED)
{
switch (TREE_CODE (decl))
{
case FUNCTION_DECL:
return objc_demangle (IDENTIFIER_POINTER (DECL_NAME (decl)));
break;
 
/* The following happens when we are printing a deprecation
warning for a method. The warn_deprecation() will end up
trying to print the decl for INSTANCE_METHOD_DECL or
CLASS_METHOD_DECL. It would be nice to be able to print
"-[NSObject autorelease] is deprecated", but to do that, we'd
need to store the class and method name in the method decl,
which we currently don't do. For now, just return the name
of the method. We don't return NULL, because that may
trigger further attempts to pretty-print the decl in C/C++,
but they wouldn't know how to pretty-print it. */
case INSTANCE_METHOD_DECL:
case CLASS_METHOD_DECL:
return IDENTIFIER_POINTER (DECL_NAME (decl));
break;
/* This happens when printing a deprecation warning for a
property. We may want to consider some sort of pretty
printing (eg, include the class name where it was declared
?). */
case PROPERTY_DECL:
return IDENTIFIER_POINTER (PROPERTY_NAME (decl));
break;
default:
return NULL;
break;
}
}
 
/* Return a printable name for 'decl'. This first tries
objc_maybe_printable_name(), and if that fails, it returns the name
in the decl. This is used as LANG_HOOKS_DECL_PRINTABLE_NAME for
Objective-C; in Objective-C++, setting the hook is not enough
because lots of C++ Front-End code calls cxx_printable_name,
dump_decl and other C++ functions directly. So instead we have
modified dump_decl to call objc_maybe_printable_name directly. */
const char *
objc_printable_name (tree decl, int v)
{
const char *demangled_name = objc_maybe_printable_name (decl, v);
 
if (demangled_name != NULL)
return demangled_name;
else
return IDENTIFIER_POINTER (DECL_NAME (decl));
}
 
/* Routine is called to issue diagnostic when reference to a private
ivar is made and no other variable with same name is found in
current scope. */
bool
objc_diagnose_private_ivar (tree id)
{
tree ivar;
if (!objc_method_context)
return false;
ivar = is_ivar (objc_ivar_chain, id);
if (ivar && is_private (ivar))
{
error ("instance variable %qs is declared private",
IDENTIFIER_POINTER (id));
return true;
}
return false;
}
 
/* Look up ID as an instance variable. OTHER contains the result of
the C or C++ lookup, which we may want to use instead. */
/* To use properties inside an instance method, use self.property. */
tree
objc_lookup_ivar (tree other, tree id)
{
tree ivar;
 
/* If we are not inside of an ObjC method, ivar lookup makes no sense. */
if (!objc_method_context)
return other;
 
if (!strcmp (IDENTIFIER_POINTER (id), "super"))
/* We have a message to super. */
return get_super_receiver ();
 
/* In a class method, look up an instance variable only as a last
resort. */
if (TREE_CODE (objc_method_context) == CLASS_METHOD_DECL
&& other && other != error_mark_node)
return other;
 
/* Look up the ivar, but do not use it if it is not accessible. */
ivar = is_ivar (objc_ivar_chain, id);
 
if (!ivar || is_private (ivar))
return other;
 
/* In an instance method, a local variable (or parameter) may hide the
instance variable. */
if (TREE_CODE (objc_method_context) == INSTANCE_METHOD_DECL
&& other && other != error_mark_node
#ifdef OBJCPLUS
&& CP_DECL_CONTEXT (other) != global_namespace)
#else
&& !DECL_FILE_SCOPE_P (other))
#endif
{
warning (0, "local declaration of %qE hides instance variable", id);
 
return other;
}
 
/* At this point, we are either in an instance method with no obscuring
local definitions, or in a class method with no alternate definitions
at all. */
return build_ivar_reference (id);
}
 
/* Possibly rewrite a function CALL into an OBJ_TYPE_REF expression. This
needs to be done if we are calling a function through a cast. */
 
tree
objc_rewrite_function_call (tree function, tree first_param)
{
if (TREE_CODE (function) == NOP_EXPR
&& TREE_CODE (TREE_OPERAND (function, 0)) == ADDR_EXPR
&& TREE_CODE (TREE_OPERAND (TREE_OPERAND (function, 0), 0))
== FUNCTION_DECL)
{
function = build3 (OBJ_TYPE_REF, TREE_TYPE (function),
TREE_OPERAND (function, 0),
first_param, size_zero_node);
}
 
return function;
}
 
/* This is called to "gimplify" a PROPERTY_REF node. It builds the
corresponding 'getter' function call. Note that we assume the
PROPERTY_REF to be valid since we generated it while parsing. */
static void
objc_gimplify_property_ref (tree *expr_p)
{
tree getter = PROPERTY_REF_GETTER_CALL (*expr_p);
tree call_exp;
 
if (getter == NULL_TREE)
{
tree property_decl = PROPERTY_REF_PROPERTY_DECL (*expr_p);
/* This can happen if DECL_ARTIFICIAL (*expr_p), but
should be impossible for real properties, which always
have a getter. */
error_at (EXPR_LOCATION (*expr_p), "no %qs getter found",
IDENTIFIER_POINTER (PROPERTY_NAME (property_decl)));
/* Try to recover from the error to prevent an ICE. We take
zero and cast it to the type of the property. */
*expr_p = convert (TREE_TYPE (property_decl),
integer_zero_node);
return;
}
 
if (PROPERTY_REF_DEPRECATED_GETTER (*expr_p))
{
/* PROPERTY_REF_DEPRECATED_GETTER contains the method prototype
that is deprecated. */
warn_deprecated_use (PROPERTY_REF_DEPRECATED_GETTER (*expr_p),
NULL_TREE);
}
 
call_exp = getter;
#ifdef OBJCPLUS
/* In C++, a getter which returns an aggregate value results in a
target_expr which initializes a temporary to the call
expression. */
if (TREE_CODE (getter) == TARGET_EXPR)
{
gcc_assert (MAYBE_CLASS_TYPE_P (TREE_TYPE (getter)));
gcc_assert (TREE_CODE (TREE_OPERAND (getter, 0)) == VAR_DECL);
call_exp = TREE_OPERAND (getter, 1);
}
#endif
gcc_assert (TREE_CODE (call_exp) == CALL_EXPR);
 
*expr_p = call_exp;
}
 
/* This is called when "gimplifying" the trees. We need to gimplify
the Objective-C/Objective-C++ specific trees, then hand over the
process to C/C++. */
int
objc_gimplify_expr (tree *expr_p, gimple_seq *pre_p, gimple_seq *post_p)
{
enum tree_code code = TREE_CODE (*expr_p);
switch (code)
{
/* Look for the special case of OBJC_TYPE_REF with the address
of a function in OBJ_TYPE_REF_EXPR (presumably objc_msgSend
or one of its cousins). */
case OBJ_TYPE_REF:
if (TREE_CODE (OBJ_TYPE_REF_EXPR (*expr_p)) == ADDR_EXPR
&& TREE_CODE (TREE_OPERAND (OBJ_TYPE_REF_EXPR (*expr_p), 0))
== FUNCTION_DECL)
{
enum gimplify_status r0, r1;
 
/* Postincrements in OBJ_TYPE_REF_OBJECT don't affect the
value of the OBJ_TYPE_REF, so force them to be emitted
during subexpression evaluation rather than after the
OBJ_TYPE_REF. This permits objc_msgSend calls in
Objective C to use direct rather than indirect calls when
the object expression has a postincrement. */
r0 = gimplify_expr (&OBJ_TYPE_REF_OBJECT (*expr_p), pre_p, NULL,
is_gimple_val, fb_rvalue);
r1 = gimplify_expr (&OBJ_TYPE_REF_EXPR (*expr_p), pre_p, post_p,
is_gimple_val, fb_rvalue);
 
return MIN (r0, r1);
}
break;
case PROPERTY_REF:
objc_gimplify_property_ref (expr_p);
/* Do not return yet; let C/C++ gimplify the resulting expression. */
break;
default:
break;
}
 
#ifdef OBJCPLUS
return (enum gimplify_status) cp_gimplify_expr (expr_p, pre_p, post_p);
#else
return (enum gimplify_status) c_gimplify_expr (expr_p, pre_p, post_p);
#endif
}
 
/* --- FAST ENUMERATION --- */
/* Begin code generation for fast enumeration (foreach) ... */
 
/* Defines
 
struct __objcFastEnumerationState
{
unsigned long state;
id *itemsPtr;
unsigned long *mutationsPtr;
unsigned long extra[5];
};
 
Confusingly enough, NSFastEnumeration is then defined by libraries
to be the same structure.
*/
 
static void
build_fast_enumeration_state_template (void)
{
tree decls, *chain = NULL;
 
/* { */
objc_fast_enumeration_state_template = objc_start_struct (get_identifier
(TAG_FAST_ENUMERATION_STATE));
 
/* unsigned long state; */
decls = add_field_decl (long_unsigned_type_node, "state", &chain);
 
/* id *itemsPtr; */
add_field_decl (build_pointer_type (objc_object_type),
"itemsPtr", &chain);
 
/* unsigned long *mutationsPtr; */
add_field_decl (build_pointer_type (long_unsigned_type_node),
"mutationsPtr", &chain);
 
/* unsigned long extra[5]; */
add_field_decl (build_sized_array_type (long_unsigned_type_node, 5),
"extra", &chain);
 
/* } */
objc_finish_struct (objc_fast_enumeration_state_template, decls);
}
 
/*
'objc_finish_foreach_loop()' generates the code for an Objective-C
foreach loop. The 'location' argument is the location of the 'for'
that starts the loop. The 'object_expression' is the expression of
the 'object' that iterates; the 'collection_expression' is the
expression of the collection that we iterate over (we need to make
sure we evaluate this only once); the 'for_body' is the set of
statements to be executed in each iteration; 'break_label' and
'continue_label' are the break and continue labels which we need to
emit since the <statements> may be jumping to 'break_label' (if they
contain 'break') or to 'continue_label' (if they contain
'continue').
 
The syntax is
 
for (<object expression> in <collection expression>)
<statements>
 
which is compiled into the following blurb:
 
{
id __objc_foreach_collection;
__objc_fast_enumeration_state __objc_foreach_enum_state;
unsigned long __objc_foreach_batchsize;
id __objc_foreach_items[16];
__objc_foreach_collection = <collection expression>;
__objc_foreach_enum_state = { 0 };
__objc_foreach_batchsize = [__objc_foreach_collection countByEnumeratingWithState: &__objc_foreach_enum_state objects: __objc_foreach_items count: 16];
 
if (__objc_foreach_batchsize == 0)
<object expression> = nil;
else
{
unsigned long __objc_foreach_mutations_pointer = *__objc_foreach_enum_state.mutationsPtr;
next_batch:
{
unsigned long __objc_foreach_index;
__objc_foreach_index = 0;
 
next_object:
if (__objc_foreach_mutation_pointer != *__objc_foreach_enum_state.mutationsPtr) objc_enumeration_mutation (<collection expression>);
<object expression> = enumState.itemsPtr[__objc_foreach_index];
<statements> [PS: inside <statments>, 'break' jumps to break_label and 'continue' jumps to continue_label]
 
continue_label:
__objc_foreach_index++;
if (__objc_foreach_index < __objc_foreach_batchsize) goto next_object;
__objc_foreach_batchsize = [__objc_foreach_collection countByEnumeratingWithState: &__objc_foreach_enum_state objects: __objc_foreach_items count: 16];
}
if (__objc_foreach_batchsize != 0) goto next_batch;
<object expression> = nil;
break_label:
}
}
 
'statements' may contain a 'continue' or 'break' instruction, which
the user expects to 'continue' or 'break' the entire foreach loop.
We are provided the labels that 'break' and 'continue' jump to, so
we place them where we want them to jump to when they pick them.
 
Optimization TODO: we could cache the IMP of
countByEnumeratingWithState:objects:count:.
*/
 
/* If you need to debug objc_finish_foreach_loop(), uncomment the following line. */
/* #define DEBUG_OBJC_FINISH_FOREACH_LOOP 1 */
 
#ifdef DEBUG_OBJC_FINISH_FOREACH_LOOP
#include "tree-pretty-print.h"
#endif
 
void
objc_finish_foreach_loop (location_t location, tree object_expression, tree collection_expression, tree for_body,
tree break_label, tree continue_label)
{
/* A tree representing the __objcFastEnumerationState struct type,
or NSFastEnumerationState struct, whatever we are using. */
tree objc_fast_enumeration_state_type;
 
/* The trees representing the declarations of each of the local variables. */
tree objc_foreach_collection_decl;
tree objc_foreach_enum_state_decl;
tree objc_foreach_items_decl;
tree objc_foreach_batchsize_decl;
tree objc_foreach_mutations_pointer_decl;
tree objc_foreach_index_decl;
 
/* A tree representing the selector countByEnumeratingWithState:objects:count:. */
tree selector_name;
 
/* A tree representing the local bind. */
tree bind;
 
/* A tree representing the external 'if (__objc_foreach_batchsize)' */
tree first_if;
 
/* A tree representing the 'else' part of 'first_if' */
tree first_else;
 
/* A tree representing the 'next_batch' label. */
tree next_batch_label_decl;
 
/* A tree representing the binding after the 'next_batch' label. */
tree next_batch_bind;
 
/* A tree representing the 'next_object' label. */
tree next_object_label_decl;
 
/* Temporary variables. */
tree t;
int i;
 
if (flag_objc1_only)
error_at (location, "fast enumeration is not available in Objective-C 1.0");
 
if (object_expression == error_mark_node)
return;
 
if (collection_expression == error_mark_node)
return;
 
if (!objc_type_valid_for_messaging (TREE_TYPE (object_expression), true))
{
error_at (location, "iterating variable in fast enumeration is not an object");
return;
}
 
if (!objc_type_valid_for_messaging (TREE_TYPE (collection_expression), true))
{
error_at (location, "collection in fast enumeration is not an object");
return;
}
 
/* TODO: Check that object_expression is either a variable
declaration, or an lvalue. */
 
/* This kludge is an idea from apple. We use the
__objcFastEnumerationState struct implicitly defined by the
compiler, unless a NSFastEnumerationState struct has been defined
(by a Foundation library such as GNUstep Base) in which case, we
use that one.
*/
objc_fast_enumeration_state_type = objc_fast_enumeration_state_template;
{
tree objc_NSFastEnumeration_type = lookup_name (get_identifier ("NSFastEnumerationState"));
 
if (objc_NSFastEnumeration_type)
{
/* TODO: We really need to check that
objc_NSFastEnumeration_type is the same as ours! */
if (TREE_CODE (objc_NSFastEnumeration_type) == TYPE_DECL)
{
/* If it's a typedef, use the original type. */
if (DECL_ORIGINAL_TYPE (objc_NSFastEnumeration_type))
objc_fast_enumeration_state_type = DECL_ORIGINAL_TYPE (objc_NSFastEnumeration_type);
else
objc_fast_enumeration_state_type = TREE_TYPE (objc_NSFastEnumeration_type);
}
}
}
 
/* { */
/* Done by c-parser.c. */
 
/* type object; */
/* Done by c-parser.c. */
 
/* Disable warnings that 'object' is unused. For example the code
 
for (id object in collection)
i++;
 
which can be used to count how many objects there are in the
collection is fine and should generate no warnings even if
'object' is technically unused. */
TREE_USED (object_expression) = 1;
if (DECL_P (object_expression))
DECL_READ_P (object_expression) = 1;
 
/* id __objc_foreach_collection */
objc_foreach_collection_decl = objc_create_temporary_var (objc_object_type, "__objc_foreach_collection");
 
/* __objcFastEnumerationState __objc_foreach_enum_state; */
objc_foreach_enum_state_decl = objc_create_temporary_var (objc_fast_enumeration_state_type, "__objc_foreach_enum_state");
TREE_CHAIN (objc_foreach_enum_state_decl) = objc_foreach_collection_decl;
 
/* id __objc_foreach_items[16]; */
objc_foreach_items_decl = objc_create_temporary_var (build_sized_array_type (objc_object_type, 16), "__objc_foreach_items");
TREE_CHAIN (objc_foreach_items_decl) = objc_foreach_enum_state_decl;
 
/* unsigned long __objc_foreach_batchsize; */
objc_foreach_batchsize_decl = objc_create_temporary_var (long_unsigned_type_node, "__objc_foreach_batchsize");
TREE_CHAIN (objc_foreach_batchsize_decl) = objc_foreach_items_decl;
 
/* Generate the local variable binding. */
bind = build3 (BIND_EXPR, void_type_node, objc_foreach_batchsize_decl, NULL, NULL);
SET_EXPR_LOCATION (bind, location);
TREE_SIDE_EFFECTS (bind) = 1;
 
/* __objc_foreach_collection = <collection expression>; */
t = build2 (MODIFY_EXPR, void_type_node, objc_foreach_collection_decl, collection_expression);
SET_EXPR_LOCATION (t, location);
append_to_statement_list (t, &BIND_EXPR_BODY (bind));
/* We have used 'collection_expression'. */
mark_exp_read (collection_expression);
 
/* __objc_foreach_enum_state.state = 0; */
t = build2 (MODIFY_EXPR, void_type_node, objc_build_component_ref (objc_foreach_enum_state_decl,
get_identifier ("state")),
build_int_cst (long_unsigned_type_node, 0));
SET_EXPR_LOCATION (t, location);
append_to_statement_list (t, &BIND_EXPR_BODY (bind));
 
/* __objc_foreach_enum_state.itemsPtr = NULL; */
t = build2 (MODIFY_EXPR, void_type_node, objc_build_component_ref (objc_foreach_enum_state_decl,
get_identifier ("itemsPtr")),
null_pointer_node);
SET_EXPR_LOCATION (t, location);
append_to_statement_list (t, &BIND_EXPR_BODY (bind));
 
/* __objc_foreach_enum_state.mutationsPtr = NULL; */
t = build2 (MODIFY_EXPR, void_type_node, objc_build_component_ref (objc_foreach_enum_state_decl,
get_identifier ("mutationsPtr")),
null_pointer_node);
SET_EXPR_LOCATION (t, location);
append_to_statement_list (t, &BIND_EXPR_BODY (bind));
 
/* __objc_foreach_enum_state.extra[0] = 0; */
/* __objc_foreach_enum_state.extra[1] = 0; */
/* __objc_foreach_enum_state.extra[2] = 0; */
/* __objc_foreach_enum_state.extra[3] = 0; */
/* __objc_foreach_enum_state.extra[4] = 0; */
for (i = 0; i < 5 ; i++)
{
t = build2 (MODIFY_EXPR, void_type_node,
build_array_ref (location, objc_build_component_ref (objc_foreach_enum_state_decl,
get_identifier ("extra")),
build_int_cst (NULL_TREE, i)),
build_int_cst (long_unsigned_type_node, 0));
SET_EXPR_LOCATION (t, location);
append_to_statement_list (t, &BIND_EXPR_BODY (bind));
}
 
/* __objc_foreach_batchsize = [__objc_foreach_collection countByEnumeratingWithState: &__objc_foreach_enum_state objects: __objc_foreach_items count: 16]; */
selector_name = get_identifier ("countByEnumeratingWithState:objects:count:");
#ifdef OBJCPLUS
t = objc_finish_message_expr (objc_foreach_collection_decl, selector_name,
/* Parameters. */
tree_cons /* &__objc_foreach_enum_state */
(NULL_TREE, build_fold_addr_expr_loc (location, objc_foreach_enum_state_decl),
tree_cons /* __objc_foreach_items */
(NULL_TREE, objc_foreach_items_decl,
tree_cons /* 16 */
(NULL_TREE, build_int_cst (NULL_TREE, 16), NULL_TREE))), NULL);
#else
/* In C, we need to decay the __objc_foreach_items array that we are passing. */
{
struct c_expr array;
array.value = objc_foreach_items_decl;
t = objc_finish_message_expr (objc_foreach_collection_decl, selector_name,
/* Parameters. */
tree_cons /* &__objc_foreach_enum_state */
(NULL_TREE, build_fold_addr_expr_loc (location, objc_foreach_enum_state_decl),
tree_cons /* __objc_foreach_items */
(NULL_TREE, default_function_array_conversion (location, array).value,
tree_cons /* 16 */
(NULL_TREE, build_int_cst (NULL_TREE, 16), NULL_TREE))), NULL);
}
#endif
t = build2 (MODIFY_EXPR, void_type_node, objc_foreach_batchsize_decl,
convert (long_unsigned_type_node, t));
SET_EXPR_LOCATION (t, location);
append_to_statement_list (t, &BIND_EXPR_BODY (bind));
 
/* if (__objc_foreach_batchsize == 0) */
first_if = build3 (COND_EXPR, void_type_node,
/* Condition. */
c_fully_fold
(c_common_truthvalue_conversion
(location,
build_binary_op (location,
EQ_EXPR,
objc_foreach_batchsize_decl,
build_int_cst (long_unsigned_type_node, 0), 1)),
false, NULL),
/* Then block (we fill it in later). */
NULL_TREE,
/* Else block (we fill it in later). */
NULL_TREE);
SET_EXPR_LOCATION (first_if, location);
append_to_statement_list (first_if, &BIND_EXPR_BODY (bind));
 
/* then <object expression> = nil; */
t = build2 (MODIFY_EXPR, void_type_node, object_expression, convert (objc_object_type, null_pointer_node));
SET_EXPR_LOCATION (t, location);
COND_EXPR_THEN (first_if) = t;
 
/* Now we build the 'else' part of the if; once we finish building
it, we attach it to first_if as the 'else' part. */
 
/* else */
/* { */
 
/* unsigned long __objc_foreach_mutations_pointer; */
objc_foreach_mutations_pointer_decl = objc_create_temporary_var (long_unsigned_type_node, "__objc_foreach_mutations_pointer");
 
/* Generate the local variable binding. */
first_else = build3 (BIND_EXPR, void_type_node, objc_foreach_mutations_pointer_decl, NULL, NULL);
SET_EXPR_LOCATION (first_else, location);
TREE_SIDE_EFFECTS (first_else) = 1;
 
/* __objc_foreach_mutations_pointer = *__objc_foreach_enum_state.mutationsPtr; */
t = build2 (MODIFY_EXPR, void_type_node, objc_foreach_mutations_pointer_decl,
build_indirect_ref (location, objc_build_component_ref (objc_foreach_enum_state_decl,
get_identifier ("mutationsPtr")),
RO_UNARY_STAR));
SET_EXPR_LOCATION (t, location);
append_to_statement_list (t, &BIND_EXPR_BODY (first_else));
 
/* next_batch: */
next_batch_label_decl = create_artificial_label (location);
t = build1 (LABEL_EXPR, void_type_node, next_batch_label_decl);
SET_EXPR_LOCATION (t, location);
append_to_statement_list (t, &BIND_EXPR_BODY (first_else));
 
/* { */
 
/* unsigned long __objc_foreach_index; */
objc_foreach_index_decl = objc_create_temporary_var (long_unsigned_type_node, "__objc_foreach_index");
 
/* Generate the local variable binding. */
next_batch_bind = build3 (BIND_EXPR, void_type_node, objc_foreach_index_decl, NULL, NULL);
SET_EXPR_LOCATION (next_batch_bind, location);
TREE_SIDE_EFFECTS (next_batch_bind) = 1;
append_to_statement_list (next_batch_bind, &BIND_EXPR_BODY (first_else));
 
/* __objc_foreach_index = 0; */
t = build2 (MODIFY_EXPR, void_type_node, objc_foreach_index_decl,
build_int_cst (long_unsigned_type_node, 0));
SET_EXPR_LOCATION (t, location);
append_to_statement_list (t, &BIND_EXPR_BODY (next_batch_bind));
 
/* next_object: */
next_object_label_decl = create_artificial_label (location);
t = build1 (LABEL_EXPR, void_type_node, next_object_label_decl);
SET_EXPR_LOCATION (t, location);
append_to_statement_list (t, &BIND_EXPR_BODY (next_batch_bind));
 
/* if (__objc_foreach_mutation_pointer != *__objc_foreach_enum_state.mutationsPtr) objc_enumeration_mutation (<collection expression>); */
t = build3 (COND_EXPR, void_type_node,
/* Condition. */
c_fully_fold
(c_common_truthvalue_conversion
(location,
build_binary_op
(location,
NE_EXPR,
objc_foreach_mutations_pointer_decl,
build_indirect_ref (location,
objc_build_component_ref (objc_foreach_enum_state_decl,
get_identifier ("mutationsPtr")),
RO_UNARY_STAR), 1)),
false, NULL),
/* Then block. */
build_function_call (input_location,
objc_enumeration_mutation_decl,
tree_cons (NULL, collection_expression, NULL)),
/* Else block. */
NULL_TREE);
SET_EXPR_LOCATION (t, location);
append_to_statement_list (t, &BIND_EXPR_BODY (next_batch_bind));
 
/* <object expression> = enumState.itemsPtr[__objc_foreach_index]; */
t = build2 (MODIFY_EXPR, void_type_node, object_expression,
build_array_ref (location, objc_build_component_ref (objc_foreach_enum_state_decl,
get_identifier ("itemsPtr")),
objc_foreach_index_decl));
SET_EXPR_LOCATION (t, location);
append_to_statement_list (t, &BIND_EXPR_BODY (next_batch_bind));
 
/* <statements> [PS: in <statments>, 'break' jumps to break_label and 'continue' jumps to continue_label] */
append_to_statement_list (for_body, &BIND_EXPR_BODY (next_batch_bind));
 
/* continue_label: */
if (continue_label)
{
t = build1 (LABEL_EXPR, void_type_node, continue_label);
SET_EXPR_LOCATION (t, location);
append_to_statement_list (t, &BIND_EXPR_BODY (next_batch_bind));
}
 
/* __objc_foreach_index++; */
t = build2 (MODIFY_EXPR, void_type_node, objc_foreach_index_decl,
build_binary_op (location,
PLUS_EXPR,
objc_foreach_index_decl,
build_int_cst (long_unsigned_type_node, 1), 1));
SET_EXPR_LOCATION (t, location);
append_to_statement_list (t, &BIND_EXPR_BODY (next_batch_bind));
 
/* if (__objc_foreach_index < __objc_foreach_batchsize) goto next_object; */
t = build3 (COND_EXPR, void_type_node,
/* Condition. */
c_fully_fold
(c_common_truthvalue_conversion
(location,
build_binary_op (location,
LT_EXPR,
objc_foreach_index_decl,
objc_foreach_batchsize_decl, 1)),
false, NULL),
/* Then block. */
build1 (GOTO_EXPR, void_type_node, next_object_label_decl),
/* Else block. */
NULL_TREE);
SET_EXPR_LOCATION (t, location);
append_to_statement_list (t, &BIND_EXPR_BODY (next_batch_bind));
 
/* __objc_foreach_batchsize = [__objc_foreach_collection countByEnumeratingWithState: &__objc_foreach_enum_state objects: __objc_foreach_items count: 16]; */
#ifdef OBJCPLUS
t = objc_finish_message_expr (objc_foreach_collection_decl, selector_name,
/* Parameters. */
tree_cons /* &__objc_foreach_enum_state */
(NULL_TREE, build_fold_addr_expr_loc (location, objc_foreach_enum_state_decl),
tree_cons /* __objc_foreach_items */
(NULL_TREE, objc_foreach_items_decl,
tree_cons /* 16 */
(NULL_TREE, build_int_cst (NULL_TREE, 16), NULL_TREE))), NULL);
#else
/* In C, we need to decay the __objc_foreach_items array that we are passing. */
{
struct c_expr array;
array.value = objc_foreach_items_decl;
t = objc_finish_message_expr (objc_foreach_collection_decl, selector_name,
/* Parameters. */
tree_cons /* &__objc_foreach_enum_state */
(NULL_TREE, build_fold_addr_expr_loc (location, objc_foreach_enum_state_decl),
tree_cons /* __objc_foreach_items */
(NULL_TREE, default_function_array_conversion (location, array).value,
tree_cons /* 16 */
(NULL_TREE, build_int_cst (NULL_TREE, 16), NULL_TREE))), NULL);
}
#endif
t = build2 (MODIFY_EXPR, void_type_node, objc_foreach_batchsize_decl,
convert (long_unsigned_type_node, t));
SET_EXPR_LOCATION (t, location);
append_to_statement_list (t, &BIND_EXPR_BODY (next_batch_bind));
 
/* } */
 
/* if (__objc_foreach_batchsize != 0) goto next_batch; */
t = build3 (COND_EXPR, void_type_node,
/* Condition. */
c_fully_fold
(c_common_truthvalue_conversion
(location,
build_binary_op (location,
NE_EXPR,
objc_foreach_batchsize_decl,
build_int_cst (long_unsigned_type_node, 0), 1)),
false, NULL),
/* Then block. */
build1 (GOTO_EXPR, void_type_node, next_batch_label_decl),
/* Else block. */
NULL_TREE);
SET_EXPR_LOCATION (t, location);
append_to_statement_list (t, &BIND_EXPR_BODY (first_else));
 
/* <object expression> = nil; */
t = build2 (MODIFY_EXPR, void_type_node, object_expression, convert (objc_object_type, null_pointer_node));
SET_EXPR_LOCATION (t, location);
append_to_statement_list (t, &BIND_EXPR_BODY (first_else));
 
/* break_label: */
if (break_label)
{
t = build1 (LABEL_EXPR, void_type_node, break_label);
SET_EXPR_LOCATION (t, location);
append_to_statement_list (t, &BIND_EXPR_BODY (first_else));
}
 
/* } */
COND_EXPR_ELSE (first_if) = first_else;
 
/* Do the whole thing. */
add_stmt (bind);
 
#ifdef DEBUG_OBJC_FINISH_FOREACH_LOOP
/* This will print to stderr the whole blurb generated by the
compiler while compiling (assuming the compiler doesn't crash
before getting here).
*/
debug_generic_stmt (bind);
#endif
 
/* } */
/* Done by c-parser.c */
}
 
/* --- SUPPORT FOR FORMAT ARG CHECKING --- */
/* Return true if we have an NxString object pointer. */
 
bool
objc_string_ref_type_p (tree strp)
{
tree tmv;
if (!strp || TREE_CODE (strp) != POINTER_TYPE)
return false;
 
tmv = TYPE_MAIN_VARIANT (TREE_TYPE (strp));
tmv = OBJC_TYPE_NAME (tmv);
return (tmv
&& TREE_CODE (tmv) == IDENTIFIER_NODE
&& IDENTIFIER_POINTER (tmv)
&& !strncmp (IDENTIFIER_POINTER (tmv), "NSString", 8));
}
 
/* At present the behavior of this is undefined and it does nothing. */
void
objc_check_format_arg (tree ARG_UNUSED (format_arg),
tree ARG_UNUSED (args_list))
{
}
 
void
objc_common_init_ts (void)
{
c_common_init_ts ();
 
MARK_TS_DECL_NON_COMMON (CLASS_METHOD_DECL);
MARK_TS_DECL_NON_COMMON (INSTANCE_METHOD_DECL);
MARK_TS_DECL_NON_COMMON (KEYWORD_DECL);
MARK_TS_DECL_NON_COMMON (PROPERTY_DECL);
 
MARK_TS_COMMON (CLASS_INTERFACE_TYPE);
MARK_TS_COMMON (PROTOCOL_INTERFACE_TYPE);
MARK_TS_COMMON (CLASS_IMPLEMENTATION_TYPE);
 
MARK_TS_TYPED (MESSAGE_SEND_EXPR);
MARK_TS_TYPED (PROPERTY_REF);
}
 
#include "gt-objc-objc-act.h"
/gcc/objc/objc-runtime-hooks.h
0,0 → 1,111
/* Hooks to abstract the runtime meta-data generation for Objective C.
Copyright (C) 2011 Free Software Foundation, Inc.
Contributed by Iain Sandoe
 
This file is part of GCC.
 
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
 
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
 
#ifndef _OBJC_RUNTIME_HOOKS_H_
#define _OBJC_RUNTIME_HOOKS_H_
 
/* A set of hooks for the front end to obtain runtime-specific actions. */
 
/* Objective-C supports several runtime library variants:
 
"GNU" runtime selected by -fgnu-runtime (currently at ABI version 8).
"NeXT" runtime (selected by -fnext-runtime) and installed on OSX/Darwin
systems at API version 1 (for m32 code) and version 2 (for m64 code).
 
The runtimes require different data types/layouts, method call mechanisms
and so on, and the purpose of this interface is to abstract such
differences from the parser's perspective. */
 
/* TODO: Do we want the initial underscore ? */
typedef struct _objc_runtime_hooks_r
{
/* TODO: Expand comments in this file. */
 
/* Initialize for this runtime. */
void (*initialize) (void);
const char *default_constant_string_class_name;
 
/* FIXME: Having to check this name should not be necessary. */
const char *tag_getclass;
/* id for superclass class field - named differently in the existing
runtimes. */
tree (*super_superclassfield_ident) (void);
 
/* Obtain a class decl for the identifier. */
tree (*class_decl) (tree);
/* Obtain a metaclass decl for the identifier. */
tree (*metaclass_decl) (tree);
/* Obtain a category decl for the identifier. */
tree (*category_decl) (tree);
/* Obtain a protocol decl for the identifier. */
tree (*protocol_decl) (tree);
/* Obtain a string decl, to be placed in the nominated string-section. */
tree (*string_decl) (tree, const char *, string_section);
 
/* Obtain a class reference, generating the fwd def. if necessary. */
tree (*get_class_reference) (tree);
/* build/get selector reference. */
tree (*build_selector_reference) (location_t, tree, tree);
/* Get a protocol reference, generating the forward def. if necessary. */
tree (*get_protocol_reference) (location_t, tree);
/* Get an ivar ref. re the base. */
tree (*build_ivar_reference) (location_t, tree, tree);
/* Get a reference to {meta}class' super. */
tree (*get_class_super_ref) (location_t, struct imp_entry *, bool);
/* Get a reference to Category {meta}class' super. */
tree (*get_category_super_ref) (location_t, struct imp_entry *, bool);
 
/* Receiver is class Object, check runtime-specific. */
tree (*receiver_is_class_object) (tree);
/* Get the start of a method argument type list (receiver, _cmd). */
void (*get_arg_type_list_base) (VEC(tree,gc) **, tree, int, int);
/* Build method call. */
tree (*build_objc_method_call) (location_t, tree, tree, tree, tree, tree, int);
 
/* Check for or otherwise handle a request to check that the constant
string class reference is set-up & OK. */
bool (*setup_const_string_class_decl) (void);
/* Return the tree reprenting a const string constructor for the arg.
Most of the data are in global trees. */
tree (*build_const_string_constructor) (location_t, tree, int);
 
/* Exceptions. */
tree (*build_throw_stmt) (location_t, tree, bool);
tree (*build_exc_ptr) (struct objc_try_context **);
tree (*begin_catch) (struct objc_try_context **, tree, tree, tree, bool);
void (*finish_catch) (struct objc_try_context **, tree);
tree (*finish_try_stmt) (struct objc_try_context **);
 
/* Emit all the metadata required by the runtime - based on the tables built
during parsing. */
void (*generate_metadata) (void);
 
} objc_runtime_hooks;
 
/* For shared support that needs to access these. */
extern objc_runtime_hooks runtime;
 
/* One per runtime at present.
TODO: Make into some kind of configury-generated table. */
extern bool objc_gnu_runtime_abi_01_init (objc_runtime_hooks *);
extern bool objc_next_runtime_abi_01_init (objc_runtime_hooks *);
extern bool objc_next_runtime_abi_02_init (objc_runtime_hooks *);
 
#endif /* _OBJC_RUNTIME_HOOKS_H_ */
/gcc/objc/objc-tree.def
0,0 → 1,77
/* This file contains the definitions and documentation for the
additional tree codes used in the Objective C front end (see tree.def
for the standard codes).
Copyright (C) 1990, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2007, 2010
Free Software Foundation, Inc.
 
This file is part of GCC.
 
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
 
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
 
 
/* Objective-C types. */
DEFTREECODE (CLASS_INTERFACE_TYPE, "class_interface_type", tcc_type, 0)
DEFTREECODE (CLASS_IMPLEMENTATION_TYPE, "class_implementation_type",
tcc_type, 0)
DEFTREECODE (CATEGORY_INTERFACE_TYPE, "category_interface_type", tcc_type, 0)
DEFTREECODE (CATEGORY_IMPLEMENTATION_TYPE,"category_implementation_type",
tcc_type, 0)
DEFTREECODE (PROTOCOL_INTERFACE_TYPE, "protocol_interface_type", tcc_type, 0)
 
/* Objective-C decls. */
DEFTREECODE (KEYWORD_DECL, "keyword_decl", tcc_declaration, 0)
DEFTREECODE (INSTANCE_METHOD_DECL, "instance_method_decl", tcc_declaration, 0)
DEFTREECODE (CLASS_METHOD_DECL, "class_method_decl", tcc_declaration, 0)
DEFTREECODE (PROPERTY_DECL, "property_decl", tcc_declaration, 0)
 
/* Objective-C expressions. */
DEFTREECODE (MESSAGE_SEND_EXPR, "message_send_expr", tcc_expression, 3)
DEFTREECODE (CLASS_REFERENCE_EXPR, "class_reference_expr", tcc_expression, 1)
 
/* This tree is used to represent the expression 'object.property',
where 'object' is an Objective-C object and 'property' is an
Objective-C property. Operand 0 is the object (the tree
representing the expression), and Operand 1 is the property (the
PROPERTY_DECL). Operand 2 is the 'getter' call, ready to be used;
we pregenerate it because it is hard to generate it properly later
on. Operand 3 records whether using the 'getter' call should
generate a deprecation warning or not.
 
A PROPERTY_REF tree needs to be transformed into 'setter' and
'getter' calls at some point; at the moment this happens in two
places:
 
* if we detect that a modify expression is being applied to a
PROPERTY_REF, then we transform that into a 'getter' call (this
happens in build_modify_expr() or cp_build_modify_expr()).
 
* else, it will remain as a PROPERTY_REF until we get to
gimplification; at that point, we convert each PROPERTY_REF into
a 'getter' call during ObjC/ObjC++ gimplify. At that point, it
is quite hard to build a 'getter' call, but we have already built
it and we just need to swap Operand 2 in, and emit the deprecation
warnings from Operand 3 if needed.
 
Please note that when the Objective-C 2.0 "dot-syntax" 'object.component'
is encountered, where 'component' is not a property but there are valid
setter/getter methods for it, an artificial PROPERTY_DECL is generated
and used in the PROPERTY_REF. */
DEFTREECODE (PROPERTY_REF, "property_ref", tcc_expression, 4)
 
/*
Local variables:
mode:c
End:
*/
/gcc/objc/objc-act.h
0,0 → 1,734
/* Declarations for objc-act.c.
Copyright (C) 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009,
2010, 2011 Free Software Foundation, Inc.
 
This file is part of GCC.
 
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
 
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
 
 
#ifndef GCC_OBJC_ACT_H
#define GCC_OBJC_ACT_H
 
/*** Language hooks ***/
 
bool objc_init (void);
const char *objc_printable_name (tree, int);
int objc_gimplify_expr (tree *, gimple_seq *, gimple_seq *);
void objc_common_init_ts (void);
 
/* NB: The remaining public functions are prototyped in c-common.h, for the
benefit of stub-objc.c and objc-act.c. */
 
/* Objective-C structures */
 
#define CLASS_LANG_SLOT_ELTS 7
#define PROTOCOL_LANG_SLOT_ELTS 7
#define OBJC_INFO_SLOT_ELTS 2
 
/* KEYWORD_DECL */
#define KEYWORD_KEY_NAME(DECL) ((DECL)->decl_minimal.name)
#define KEYWORD_ARG_NAME(DECL) ((DECL)->decl_non_common.arguments)
 
/* INSTANCE_METHOD_DECL, CLASS_METHOD_DECL */
#define METHOD_SEL_NAME(DECL) ((DECL)->decl_minimal.name)
#define METHOD_SEL_ARGS(DECL) ((DECL)->decl_non_common.arguments)
#define METHOD_ADD_ARGS(DECL) ((DECL)->decl_non_common.result)
#define METHOD_ADD_ARGS_ELLIPSIS_P(DECL) ((DECL)->decl_common.lang_flag_0)
#define METHOD_DEFINITION(DECL) ((DECL)->decl_common.initial)
#define METHOD_ENCODING(DECL) ((DECL)->decl_minimal.context)
#define METHOD_TYPE_ATTRIBUTES(DECL) ((DECL)->decl_common.abstract_origin)
#define METHOD_PROPERTY_CONTEXT(DECL) ((DECL)->decl_common.size_unit)
 
 
/* PROPERTY_DECL. A PROPERTY_DECL repesents a @property declaration
(when attached to the list of properties of an interface) or a
@synthesize or @dynamic declaration (when attached to the list of
properties of an implementation). */
 
/* TREE_TYPE is the type (int, float, etc) of the property. */
 
/* DECL_ARTIFICIAL is set to 1 if the PROPERTY_DECL is an artificial
property declaration created when the dot-syntax object.component
is used with no actual @property matching the component, but a
valid getter/setter. */
 
/* PROPERTY_NAME is the name of the property. */
#define PROPERTY_NAME(DECL) DECL_NAME(DECL)
 
/* PROPERTY_GETTER_NAME is the identifier of the getter method. */
#define PROPERTY_GETTER_NAME(DECL) ((DECL)->decl_non_common.arguments)
 
/* PROPERTY_SETTER_NAME is the identifier of the setter method. */
#define PROPERTY_SETTER_NAME(DECL) ((DECL)->decl_non_common.result)
 
/* PROPERTY_READONLY can be 0 or 1. */
#define PROPERTY_READONLY(DECL) DECL_LANG_FLAG_0 (DECL)
 
/* PROPERTY_NONATOMIC can be 0 or 1. */
#define PROPERTY_NONATOMIC(DECL) DECL_LANG_FLAG_1 (DECL)
 
typedef enum objc_property_assign_semantics {
OBJC_PROPERTY_ASSIGN = 1,
OBJC_PROPERTY_RETAIN = 2,
OBJC_PROPERTY_COPY = 3
} objc_property_assign_semantics;
 
/* PROPERTY_ASSIGN_SEMANTICS can be OBJC_PROPERTY_ASSIGN,
OBJC_PROPERTY_RETAIN or OBJC_PROPERTY_COPY. We need an integer to
store it, so we hijack the alignment, that properties don't
have. */
#define PROPERTY_ASSIGN_SEMANTICS(DECL) ((DECL)->decl_common.align)
 
/* PROPERTY_IVAR_NAME is the identifier of the instance variable.
This is set only if the PROPERTY_DECL represents a @synthesize;
otherwise, it is set to TREE_NULL. */
#define PROPERTY_IVAR_NAME(DECL) ((DECL)->decl_common.initial)
 
/* PROPERTY_DYNAMIC can be 0 or 1. This is 1 if the PROPERTY_DECL
represents a @dynamic; otherwise, it is set to 0. */
#define PROPERTY_DYNAMIC(DECL) DECL_LANG_FLAG_2 (DECL)
 
/* PROPERTY_HAS_NO_GETTER can be 0 or 1. Normally it is 0, but if
this is an artificial PROPERTY_DECL that we generate even without a
getter, it is set to 1. */
#define PROPERTY_HAS_NO_GETTER(DECL) DECL_LANG_FLAG_3 (DECL)
 
/* PROPERTY_HAS_NO_SETTER can be 0 or 1. Normally it is 0, but if
this is an artificial PROPERTY_DECL that we generate even without a
setter, it is set to 1. */
#define PROPERTY_HAS_NO_SETTER(DECL) DECL_LANG_FLAG_4 (DECL)
 
/* PROPERTY_OPTIONAL can be 0 or 1. Normally it is 0, but if this is
a property declared as @optional in a @protocol, then it is set to
1. */
#define PROPERTY_OPTIONAL(DECL) DECL_LANG_FLAG_5 (DECL)
 
/* PROPERTY_REF. A PROPERTY_REF represents an 'object.property'
expression. It is normally used for property access, but when
the Objective-C 2.0 "dot-syntax" (object.component) is used
with no matching property, a PROPERTY_REF is still created to
represent it, with an artificial PROPERTY_DECL. */
 
/* PROPERTY_REF_OBJECT is the object whose property we are
accessing. */
#define PROPERTY_REF_OBJECT(NODE) TREE_OPERAND (PROPERTY_REF_CHECK (NODE), 0)
 
/* PROPERTY_REF_PROPERTY_DECL is the PROPERTY_DECL for the property
used in the expression. From it, you can get the property type,
and the getter/setter names. This PROPERTY_DECL could be artificial
if we are processing an 'object.component' syntax with no matching
declared property. */
#define PROPERTY_REF_PROPERTY_DECL(NODE) TREE_OPERAND (PROPERTY_REF_CHECK (NODE), 1)
 
/* PROPERTY_REF_GETTER_CALL is the getter call expression, ready to
use at gimplify time if needed. Generating the getter call
requires modifying the selector table, and, in the case of
self/super, requires the context to be generated correctly. The
gimplify stage is too late to do these things, so we generate the
getter call earlier instead, and keep it here in case we need to
use it. */
#define PROPERTY_REF_GETTER_CALL(NODE) TREE_OPERAND (PROPERTY_REF_CHECK (NODE), 2)
 
/* PROPERTY_REF_DEPRECATED_GETTER is normally set to NULL_TREE. If
the property getter is deprecated, it is set to the method
prototype for it, which is used to generate the deprecation warning
when the getter is used. */
#define PROPERTY_REF_DEPRECATED_GETTER(NODE) TREE_OPERAND (PROPERTY_REF_CHECK (NODE), 3)
 
/* CLASS_INTERFACE_TYPE, CLASS_IMPLEMENTATION_TYPE,
CATEGORY_INTERFACE_TYPE, CATEGORY_IMPLEMENTATION_TYPE,
PROTOCOL_INTERFACE_TYPE */
/* CLASS_NAME is the name of the class. */
#define CLASS_NAME(CLASS) (TYPE_NAME (CLASS))
/* CLASS_SUPER_NAME is the name of the superclass, or, in the case of
categories, it is the name of the category itself. */
#define CLASS_SUPER_NAME(CLASS) (TYPE_CONTEXT (CLASS))
#define CLASS_IVARS(CLASS) TREE_VEC_ELT (TYPE_LANG_SLOT_1 (CLASS), 0)
#define CLASS_RAW_IVARS(CLASS) TREE_VEC_ELT (TYPE_LANG_SLOT_1 (CLASS), 1)
#define CLASS_NST_METHODS(CLASS) (TYPE_MINVAL (CLASS))
#define CLASS_CLS_METHODS(CLASS) (TYPE_MAXVAL (CLASS))
#define CLASS_STATIC_TEMPLATE(CLASS) TREE_VEC_ELT (TYPE_LANG_SLOT_1 (CLASS), 2)
#define CLASS_CATEGORY_LIST(CLASS) TREE_VEC_ELT (TYPE_LANG_SLOT_1 (CLASS), 3)
#define CLASS_PROTOCOL_LIST(CLASS) TREE_VEC_ELT (TYPE_LANG_SLOT_1 (CLASS), 4)
#define TOTAL_CLASS_RAW_IVARS(CLASS) TREE_VEC_ELT (TYPE_LANG_SLOT_1 (CLASS), 5)
#define CLASS_HAS_EXCEPTION_ATTR(CLASS) (TYPE_LANG_FLAG_0 (CLASS))
 
#define PROTOCOL_NAME(CLASS) (TYPE_NAME (CLASS))
#define PROTOCOL_LIST(CLASS) TREE_VEC_ELT (TYPE_LANG_SLOT_1 (CLASS), 0)
#define PROTOCOL_NST_METHODS(CLASS) (TYPE_MINVAL (CLASS))
#define PROTOCOL_CLS_METHODS(CLASS) (TYPE_MAXVAL (CLASS))
#define PROTOCOL_FORWARD_DECL(CLASS) TREE_VEC_ELT (TYPE_LANG_SLOT_1 (CLASS), 1)
#define PROTOCOL_DEFINED(CLASS) TREE_USED (CLASS)
#define PROTOCOL_OPTIONAL_CLS_METHODS(CLASS) TREE_VEC_ELT (TYPE_LANG_SLOT_1 (CLASS), 2)
#define PROTOCOL_OPTIONAL_NST_METHODS(CLASS) TREE_VEC_ELT (TYPE_LANG_SLOT_1 (CLASS), 3)
 
/* For CATEGORY_INTERFACE_TYPE, CLASS_INTERFACE_TYPE or PROTOCOL_INTERFACE_TYPE */
#define CLASS_PROPERTY_DECL(CLASS) TREE_VEC_ELT (TYPE_LANG_SLOT_1 (CLASS), 6)
/* For CLASS_IMPLEMENTATION_TYPE or CATEGORY_IMPLEMENTATION_TYPE. */
#define IMPL_PROPERTY_DECL(CLASS) TREE_VEC_ELT (TYPE_LANG_SLOT_1 (CLASS), 6)
 
/* TREE_DEPRECATED is used for a CLASS_INTERFACE_TYPE or PROTOCOL_INTERFACE_TYPE. */
 
/* TYPE_ATTRIBUTES is used for a CLASS_INTERFACE_TYPE or PROTOCOL_INTERFACE_TYPE. */
 
/* ObjC-specific information pertaining to RECORD_TYPEs are stored in
the LANG_SPECIFIC structures, which may itself need allocating first. */
 
/* The following three macros must be overridden (in objcp/objcp-decl.h)
for Objective-C++. */
#define TYPE_OBJC_INFO(TYPE) TYPE_LANG_SPECIFIC (TYPE)->objc_info
#define SIZEOF_OBJC_TYPE_LANG_SPECIFIC sizeof (struct lang_type)
#define ALLOC_OBJC_TYPE_LANG_SPECIFIC(NODE) \
do { \
TYPE_LANG_SPECIFIC (NODE) \
= ggc_alloc_cleared_lang_type (sizeof (struct lang_type)); \
} while (0)
 
#define TYPE_HAS_OBJC_INFO(TYPE) \
(TYPE_LANG_SPECIFIC (TYPE) && TYPE_OBJC_INFO (TYPE))
#define TYPE_OBJC_INTERFACE(TYPE) TREE_VEC_ELT (TYPE_OBJC_INFO (TYPE), 0)
#define TYPE_OBJC_PROTOCOL_LIST(TYPE) TREE_VEC_ELT (TYPE_OBJC_INFO (TYPE), 1)
 
 
#define INIT_TYPE_OBJC_INFO(TYPE) \
do \
{ \
if (!TYPE_LANG_SPECIFIC (TYPE)) \
ALLOC_OBJC_TYPE_LANG_SPECIFIC(TYPE); \
if (!TYPE_OBJC_INFO (TYPE)) \
TYPE_OBJC_INFO (TYPE) \
= make_tree_vec (OBJC_INFO_SLOT_ELTS); \
} \
while (0)
 
#define DUP_TYPE_OBJC_INFO(DST, SRC) \
do \
{ \
ALLOC_OBJC_TYPE_LANG_SPECIFIC(DST); \
if (TYPE_LANG_SPECIFIC (SRC)) \
memcpy (TYPE_LANG_SPECIFIC (DST), \
TYPE_LANG_SPECIFIC (SRC), \
SIZEOF_OBJC_TYPE_LANG_SPECIFIC); \
TYPE_OBJC_INFO (DST) \
= make_tree_vec (OBJC_INFO_SLOT_ELTS); \
} \
while (0)
 
#define TYPED_OBJECT(TYPE) \
(TREE_CODE (TYPE) == RECORD_TYPE \
&& TYPE_HAS_OBJC_INFO (TYPE) \
&& TYPE_OBJC_INTERFACE (TYPE))
#define OBJC_TYPE_NAME(TYPE) TYPE_NAME(TYPE)
#define OBJC_SET_TYPE_NAME(TYPE, NAME) (TYPE_NAME (TYPE) = NAME)
 
/* Hash tables to manage the global pool of method prototypes. */
 
typedef struct hashed_entry *hash;
typedef struct hashed_attribute *attr;
 
struct GTY(()) hashed_attribute {
attr next;
tree value;
};
 
struct GTY(()) hashed_entry {
attr list;
hash next;
tree key;
};
 
#define SIZEHASHTABLE 257
 
/* An array of all the local variables in the current function that
need to be marked as volatile. */
extern GTY(()) VEC(tree,gc) *local_variables_to_volatilize;
 
/* Objective-C/Objective-C++ @implementation list. */
 
struct GTY(()) imp_entry {
struct imp_entry *next;
tree imp_context;
tree imp_template;
tree class_decl; /* _OBJC[_v2]_CLASS/CATEGORY_<my_name>; */
tree meta_decl; /* _OBJC[_v2]_METACLASS_<my_name>; */
BOOL_BITFIELD has_cxx_cdtors : 1;
};
 
extern GTY(()) struct imp_entry *imp_list;
extern GTY(()) int imp_count; /* `@implementation' */
extern GTY(()) int cat_count; /* `@category' */
 
extern GTY(()) objc_ivar_visibility_kind objc_ivar_visibility;
 
/* Objective-C/Objective-C++ global tree enumeration. */
 
enum objc_tree_index
{
OCTI_STATIC_NST,
OCTI_STATIC_NST_DECL,
OCTI_SELF_ID,
OCTI_UCMD_ID,
 
OCTI_SELF_DECL,
OCTI_UMSG_DECL,
OCTI_UMSG_FAST_DECL,
OCTI_UMSG_SUPER_DECL,
OCTI_UMSG_STRET_DECL,
OCTI_UMSG_SUPER_STRET_DECL,
OCTI_GET_CLASS_DECL,
OCTI_GET_MCLASS_DECL,
OCTI_SUPER_TYPE,
OCTI_SEL_TYPE,
OCTI_ID_TYPE,
OCTI_CLS_TYPE,
OCTI_NST_TYPE,
OCTI_PROTO_TYPE,
 
OCTI_INTF_CHAIN,
OCTI_PROTO_CHAIN,
OCTI_IMPL_CHAIN,
OCTI_CLS_REF_CHAIN,
OCTI_SEL_REF_CHAIN,
OCTI_IVAR_CHAIN,
OCTI_CLS_NAMES_CHAIN,
OCTI_METH_VAR_NAMES_CHAIN,
OCTI_METH_VAR_TYPES_CHAIN,
 
OCTI_SYMBOLS_DECL,
OCTI_NST_VAR_DECL,
OCTI_CLS_VAR_DECL,
OCTI_NST_METH_DECL,
OCTI_CLS_METH_DECL,
OCTI_CLS_DECL,
OCTI_MCLS_DECL,
OCTI_SEL_TABLE_DECL,
OCTI_MODULES_DECL,
OCTI_GNU_INIT_DECL,
 
OCTI_INTF_CTX,
OCTI_IMPL_CTX,
OCTI_METH_CTX,
OCTI_IVAR_CTX,
 
OCTI_IMPL_TEMPL,
OCTI_CLS_TEMPL,
OCTI_CAT_TEMPL,
OCTI_UPRIV_REC,
OCTI_PROTO_TEMPL,
OCTI_SEL_TEMPL,
OCTI_UCLS_SUPER_REF,
OCTI_UUCLS_SUPER_REF,
OCTI_METH_TEMPL,
OCTI_IVAR_TEMPL,
OCTI_METH_LIST_TEMPL,
OCTI_METH_PROTO_LIST_TEMPL,
OCTI_IVAR_LIST_TEMPL,
OCTI_SYMTAB_TEMPL,
OCTI_MODULE_TEMPL,
OCTI_SUPER_TEMPL,
OCTI_OBJ_REF,
OCTI_CLS_REF,
OCTI_METH_PROTO_TEMPL,
OCTI_FUNCTION1_TEMPL,
OCTI_FUNCTION2_TEMPL,
 
OCTI_OBJ_ID,
OCTI_CLS_ID,
OCTI_ID_NAME,
OCTI_CLASS_NAME,
OCTI_CNST_STR_ID,
OCTI_CNST_STR_TYPE,
OCTI_CNST_STR_GLOB_ID,
OCTI_STRING_CLASS_DECL,
OCTI_INTERNAL_CNST_STR_TYPE,
OCTI_SUPER_DECL,
OCTI_SUPER_SUPERFIELD_ID,
OCTI_UMSG_NONNIL_DECL,
OCTI_UMSG_NONNIL_STRET_DECL,
OCTI_STORAGE_CLS,
OCTI_EXCEPTION_EXTRACT_DECL,
OCTI_EXCEPTION_TRY_ENTER_DECL,
OCTI_EXCEPTION_TRY_EXIT_DECL,
OCTI_EXCEPTION_MATCH_DECL,
OCTI_EXCEPTION_THROW_DECL,
OCTI_SYNC_ENTER_DECL,
OCTI_SYNC_EXIT_DECL,
OCTI_SETJMP_DECL,
OCTI_EXCDATA_TEMPL,
OCTI_STACK_EXCEPTION_DATA_DECL,
OCTI_LOCAL_EXCEPTION_DECL,
OCTI_RETHROW_EXCEPTION_DECL,
OCTI_EVAL_ONCE_DECL,
OCTI_CATCH_TYPE,
OCTI_EXECCLASS_DECL,
 
OCTI_ASSIGN_IVAR_DECL,
OCTI_ASSIGN_IVAR_FAST_DECL,
OCTI_ASSIGN_GLOBAL_DECL,
OCTI_ASSIGN_STRONGCAST_DECL,
 
OCTI_FAST_ENUM_STATE_TEMP,
OCTI_ENUM_MUTATION_DECL,
 
OCTI_GET_PROPERTY_DECL,
OCTI_SET_PROPERTY_DECL,
OCTI_COPY_STRUCT_DECL,
OCTI_GET_PROPERTY_STRUCT_DECL,
OCTI_SET_PROPERTY_STRUCT_DECL,
 
/* TODO: Add comment. */
/* "V1" stuff. */
OCTI_V1_PROP_LIST_TEMPL,
OCTI_V1_PROP_NAME_ATTR_CHAIN,
 
OCTI_MAX
};
 
extern GTY(()) tree objc_global_trees[OCTI_MAX];
 
/* List of classes with list of their static instances. */
#define objc_static_instances objc_global_trees[OCTI_STATIC_NST]
 
/* The declaration of the array administrating the static instances. */
#define static_instances_decl objc_global_trees[OCTI_STATIC_NST_DECL]
 
/* Some commonly used instances of "identifier_node". */
 
#define self_id objc_global_trees[OCTI_SELF_ID]
#define ucmd_id objc_global_trees[OCTI_UCMD_ID]
 
#define self_decl objc_global_trees[OCTI_SELF_DECL]
#define umsg_decl objc_global_trees[OCTI_UMSG_DECL]
#define umsg_fast_decl objc_global_trees[OCTI_UMSG_FAST_DECL]
#define umsg_super_decl objc_global_trees[OCTI_UMSG_SUPER_DECL]
#define umsg_stret_decl objc_global_trees[OCTI_UMSG_STRET_DECL]
#define umsg_super_stret_decl objc_global_trees[OCTI_UMSG_SUPER_STRET_DECL]
#define objc_get_class_decl objc_global_trees[OCTI_GET_CLASS_DECL]
#define objc_get_meta_class_decl \
objc_global_trees[OCTI_GET_MCLASS_DECL]
 
#define objc_super_type objc_global_trees[OCTI_SUPER_TYPE]
#define objc_selector_type objc_global_trees[OCTI_SEL_TYPE]
#define objc_object_type objc_global_trees[OCTI_ID_TYPE]
#define objc_class_type objc_global_trees[OCTI_CLS_TYPE]
#define objc_instance_type objc_global_trees[OCTI_NST_TYPE]
#define objc_protocol_type objc_global_trees[OCTI_PROTO_TYPE]
 
/* Type checking macros. */
 
#define IS_ID(TYPE) \
(TREE_CODE (TYPE) == POINTER_TYPE \
&& (TYPE_MAIN_VARIANT (TREE_TYPE (TYPE)) \
== TREE_TYPE (objc_object_type)))
 
#define IS_CLASS(TYPE) \
(TREE_CODE (TYPE) == POINTER_TYPE \
&& (TYPE_MAIN_VARIANT (TREE_TYPE (TYPE)) \
== TREE_TYPE (objc_class_type)))
 
#define IS_PROTOCOL_QUALIFIED_UNTYPED(TYPE) \
((IS_ID (TYPE) || IS_CLASS (TYPE)) \
&& TYPE_HAS_OBJC_INFO (TREE_TYPE (TYPE)) \
&& TYPE_OBJC_PROTOCOL_LIST (TREE_TYPE (TYPE)))
 
#define IS_SUPER(TYPE) \
(TREE_CODE (TYPE) == POINTER_TYPE \
&& TREE_TYPE (TYPE) == objc_super_template)
 
#define interface_chain objc_global_trees[OCTI_INTF_CHAIN]
#define protocol_chain objc_global_trees[OCTI_PROTO_CHAIN]
#define implemented_classes objc_global_trees[OCTI_IMPL_CHAIN]
 
/* Chains to manage selectors that are referenced and defined in the
module. */
 
#define cls_ref_chain objc_global_trees[OCTI_CLS_REF_CHAIN] /* Classes referenced. */
#define sel_ref_chain objc_global_trees[OCTI_SEL_REF_CHAIN] /* Selectors referenced. */
#define objc_ivar_chain objc_global_trees[OCTI_IVAR_CHAIN]
 
/* Chains to manage uniquing of strings. */
 
#define class_names_chain objc_global_trees[OCTI_CLS_NAMES_CHAIN]
#define meth_var_names_chain objc_global_trees[OCTI_METH_VAR_NAMES_CHAIN]
#define meth_var_types_chain objc_global_trees[OCTI_METH_VAR_TYPES_CHAIN]
 
 
/* Backend data declarations. */
 
#define UOBJC_SYMBOLS_decl objc_global_trees[OCTI_SYMBOLS_DECL]
#define UOBJC_INSTANCE_VARIABLES_decl objc_global_trees[OCTI_NST_VAR_DECL]
#define UOBJC_CLASS_VARIABLES_decl objc_global_trees[OCTI_CLS_VAR_DECL]
#define UOBJC_INSTANCE_METHODS_decl objc_global_trees[OCTI_NST_METH_DECL]
#define UOBJC_CLASS_METHODS_decl objc_global_trees[OCTI_CLS_METH_DECL]
#define UOBJC_CLASS_decl objc_global_trees[OCTI_CLS_DECL]
#define UOBJC_METACLASS_decl objc_global_trees[OCTI_MCLS_DECL]
#define UOBJC_SELECTOR_TABLE_decl objc_global_trees[OCTI_SEL_TABLE_DECL]
#define UOBJC_MODULES_decl objc_global_trees[OCTI_MODULES_DECL]
#define GNU_INIT_decl objc_global_trees[OCTI_GNU_INIT_DECL]
 
/* The following are used when compiling a class implementation.
implementation_template will normally be an interface, however if
none exists this will be equal to objc_implementation_context...it is
set in start_class. */
 
#define objc_interface_context objc_global_trees[OCTI_INTF_CTX]
#define objc_implementation_context objc_global_trees[OCTI_IMPL_CTX]
#define objc_method_context objc_global_trees[OCTI_METH_CTX]
#define objc_ivar_context objc_global_trees[OCTI_IVAR_CTX]
 
#define implementation_template objc_global_trees[OCTI_IMPL_TEMPL]
#define objc_class_template objc_global_trees[OCTI_CLS_TEMPL]
#define objc_category_template objc_global_trees[OCTI_CAT_TEMPL]
#define uprivate_record objc_global_trees[OCTI_UPRIV_REC]
#define objc_protocol_template objc_global_trees[OCTI_PROTO_TEMPL]
#define objc_selector_template objc_global_trees[OCTI_SEL_TEMPL]
#define ucls_super_ref objc_global_trees[OCTI_UCLS_SUPER_REF]
#define uucls_super_ref objc_global_trees[OCTI_UUCLS_SUPER_REF]
 
#define umsg_nonnil_decl objc_global_trees[OCTI_UMSG_NONNIL_DECL]
#define umsg_nonnil_stret_decl objc_global_trees[OCTI_UMSG_NONNIL_STRET_DECL]
#define objc_storage_class objc_global_trees[OCTI_STORAGE_CLS]
#define objc_exception_extract_decl \
objc_global_trees[OCTI_EXCEPTION_EXTRACT_DECL]
#define objc_exception_try_enter_decl \
objc_global_trees[OCTI_EXCEPTION_TRY_ENTER_DECL]
#define objc_exception_try_exit_decl \
objc_global_trees[OCTI_EXCEPTION_TRY_EXIT_DECL]
#define objc_exception_match_decl \
objc_global_trees[OCTI_EXCEPTION_MATCH_DECL]
#define objc_exception_throw_decl \
objc_global_trees[OCTI_EXCEPTION_THROW_DECL]
#define objc_sync_enter_decl objc_global_trees[OCTI_SYNC_ENTER_DECL]
#define objc_sync_exit_decl objc_global_trees[OCTI_SYNC_EXIT_DECL]
#define objc_exception_data_template \
objc_global_trees[OCTI_EXCDATA_TEMPL]
#define objc_setjmp_decl objc_global_trees[OCTI_SETJMP_DECL]
#define objc_stack_exception_data \
objc_global_trees[OCTI_STACK_EXCEPTION_DATA_DECL]
#define objc_caught_exception objc_global_trees[OCTI_LOCAL_EXCEPTION_DECL]
#define objc_rethrow_exception objc_global_trees[OCTI_RETHROW_EXCEPTION_DECL]
#define objc_eval_once objc_global_trees[OCTI_EVAL_ONCE_DECL]
#define objc_catch_type objc_global_trees[OCTI_CATCH_TYPE]
 
#define execclass_decl objc_global_trees[OCTI_EXECCLASS_DECL]
 
#define objc_assign_ivar_decl objc_global_trees[OCTI_ASSIGN_IVAR_DECL]
#define objc_assign_ivar_fast_decl \
objc_global_trees[OCTI_ASSIGN_IVAR_FAST_DECL]
#define objc_assign_global_decl objc_global_trees[OCTI_ASSIGN_GLOBAL_DECL]
#define objc_assign_strong_cast_decl \
objc_global_trees[OCTI_ASSIGN_STRONGCAST_DECL]
 
#define objc_method_template objc_global_trees[OCTI_METH_TEMPL]
#define objc_ivar_template objc_global_trees[OCTI_IVAR_TEMPL]
#define objc_method_list_ptr objc_global_trees[OCTI_METH_LIST_TEMPL]
#define objc_method_proto_list_ptr \
objc_global_trees[OCTI_METH_PROTO_LIST_TEMPL]
#define objc_ivar_list_ptr objc_global_trees[OCTI_IVAR_LIST_TEMPL]
#define objc_symtab_template objc_global_trees[OCTI_SYMTAB_TEMPL]
#define objc_module_template objc_global_trees[OCTI_MODULE_TEMPL]
#define objc_super_template objc_global_trees[OCTI_SUPER_TEMPL]
#define objc_object_reference objc_global_trees[OCTI_OBJ_REF]
#define objc_class_reference objc_global_trees[OCTI_CLS_REF]
#define objc_method_prototype_template \
objc_global_trees[OCTI_METH_PROTO_TEMPL]
#define function1_template objc_global_trees[OCTI_FUNCTION1_TEMPL]
#define function2_template objc_global_trees[OCTI_FUNCTION2_TEMPL]
 
#define objc_object_id objc_global_trees[OCTI_OBJ_ID]
#define objc_class_id objc_global_trees[OCTI_CLS_ID]
#define objc_object_name objc_global_trees[OCTI_ID_NAME]
#define objc_class_name objc_global_trees[OCTI_CLASS_NAME]
 
/* Constant string classes. */
#define constant_string_id objc_global_trees[OCTI_CNST_STR_ID]
#define constant_string_type objc_global_trees[OCTI_CNST_STR_TYPE]
#define constant_string_global_id \
objc_global_trees[OCTI_CNST_STR_GLOB_ID]
#define string_class_decl objc_global_trees[OCTI_STRING_CLASS_DECL]
#define internal_const_str_type objc_global_trees[OCTI_INTERNAL_CNST_STR_TYPE]
 
#define UOBJC_SUPER_decl objc_global_trees[OCTI_SUPER_DECL]
#define super_superclassfield_id \
objc_global_trees[OCTI_SUPER_SUPERFIELD_ID]
 
#define objc_fast_enumeration_state_template \
objc_global_trees[OCTI_FAST_ENUM_STATE_TEMP]
#define objc_enumeration_mutation_decl \
objc_global_trees[OCTI_ENUM_MUTATION_DECL]
 
/* Declarations of functions used when synthesizing property
accessors. */
#define objc_getProperty_decl objc_global_trees[OCTI_GET_PROPERTY_DECL]
#define objc_setProperty_decl objc_global_trees[OCTI_SET_PROPERTY_DECL]
#define objc_copyStruct_decl objc_global_trees[OCTI_COPY_STRUCT_DECL]
#define objc_getPropertyStruct_decl \
objc_global_trees[OCTI_GET_PROPERTY_STRUCT_DECL]
#define objc_setPropertyStruct_decl \
objc_global_trees[OCTI_SET_PROPERTY_STRUCT_DECL]
 
/* TODO: Add comment. */
/* V1 stuff. */
#define objc_prop_list_ptr objc_global_trees[OCTI_V1_PROP_LIST_TEMPL]
#define prop_names_attr_chain objc_global_trees[OCTI_V1_PROP_NAME_ATTR_CHAIN]
 
/* Reserved tag definitions. */
 
#define OBJECT_TYPEDEF_NAME "id"
#define CLASS_TYPEDEF_NAME "Class"
 
#define TAG_OBJECT "objc_object"
#define TAG_CLASS "objc_class"
#define TAG_SUPER "objc_super"
#define TAG_SELECTOR "objc_selector"
 
#define UTAG_CLASS "_objc_class"
#define UTAG_IVAR "_objc_ivar"
#define UTAG_IVAR_LIST "_objc_ivar_list"
#define UTAG_METHOD "_objc_method"
#define UTAG_METHOD_LIST "_objc_method_list"
#define UTAG_CATEGORY "_objc_category"
#define UTAG_MODULE "_objc_module"
#define UTAG_SYMTAB "_objc_symtab"
#define UTAG_SUPER "_objc_super"
#define UTAG_SELECTOR "_objc_selector"
 
#define UTAG_PROTOCOL "_objc_protocol"
#define UTAG_METHOD_PROTOTYPE "_objc_method_prototype"
#define UTAG_METHOD_PROTOTYPE_LIST "_objc__method_prototype_list"
 
#define PROTOCOL_OBJECT_CLASS_NAME "Protocol"
 
#define TAG_EXCEPTIONTHROW "objc_exception_throw"
#define TAG_SYNCENTER "objc_sync_enter"
#define TAG_SYNCEXIT "objc_sync_exit"
 
/* Really should be NeXT private. */
#define UTAG_EXCDATA "_objc_exception_data"
 
#define TAG_CXX_CONSTRUCT ".cxx_construct"
#define TAG_CXX_DESTRUCT ".cxx_destruct"
 
#define TAG_ENUMERATION_MUTATION "objc_enumerationMutation"
#define TAG_FAST_ENUMERATION_STATE "__objcFastEnumerationState"
 
typedef enum string_section
{
class_names, /* class, category, protocol, module names */
meth_var_names, /* method and variable names */
meth_var_types, /* method and variable type descriptors */
prop_names_attr /* property names and their attributes. */
} string_section;
 
#define METHOD_DEF 0
#define METHOD_REF 1
 
#define BUFSIZE 1024
 
#define CLS_FACTORY 0x0001L
#define CLS_META 0x0002L
 
/* Runtime metadata flags - ??? apparently unused. */
 
#define OBJC_MODIFIER_STATIC 0x00000001
#define OBJC_MODIFIER_FINAL 0x00000002
#define OBJC_MODIFIER_PUBLIC 0x00000004
#define OBJC_MODIFIER_PRIVATE 0x00000008
#define OBJC_MODIFIER_PROTECTED 0x00000010
#define OBJC_MODIFIER_NATIVE 0x00000020
#define OBJC_MODIFIER_SYNCHRONIZED 0x00000040
#define OBJC_MODIFIER_ABSTRACT 0x00000080
#define OBJC_MODIFIER_VOLATILE 0x00000100
#define OBJC_MODIFIER_TRANSIENT 0x00000200
#define OBJC_MODIFIER_NONE_SPECIFIED 0x80000000
 
/* Exception handling constructs. We begin by having the parser do most
of the work and passing us blocks.
This allows us to handle different exceptions implementations. */
 
/* Stack of open try blocks. */
 
struct objc_try_context
{
struct objc_try_context *outer;
 
/* Statements (or statement lists) as processed by the parser. */
tree try_body;
tree finally_body;
 
/* Some file position locations. */
location_t try_locus;
location_t end_try_locus;
location_t end_catch_locus;
location_t finally_locus;
location_t end_finally_locus;
 
/* A STATEMENT_LIST of CATCH_EXPRs, appropriate for sticking into op1
of a TRY_CATCH_EXPR. Even when doing Darwin setjmp. */
tree catch_list;
 
/* The CATCH_EXPR of an open @catch clause. */
tree current_catch;
 
/* The VAR_DECL holding __builtin_eh_pointer (or equivalent). */
tree caught_decl;
tree stack_decl;
tree rethrow_decl;
};
 
/* A small number of routines used by the FE parser and the runtime code
generators. Put here as inlines for efficiency in non-lto builds rather
than making them externs. */
 
extern tree objc_create_temporary_var (tree, const char *);
 
#define objc_is_object_id(TYPE) (OBJC_TYPE_NAME (TYPE) == objc_object_id)
#define objc_is_class_id(TYPE) (OBJC_TYPE_NAME (TYPE) == objc_class_id)
 
/* Retrieve category interface CAT_NAME (if any) associated with CLASS. */
static inline tree
lookup_category (tree klass, tree cat_name)
{
tree category = CLASS_CATEGORY_LIST (klass);
 
while (category && CLASS_SUPER_NAME (category) != cat_name)
category = CLASS_CATEGORY_LIST (category);
return category;
}
 
/* Count only the fields occurring in T. */
static inline int
ivar_list_length (tree t)
{
int count = 0;
 
for (; t; t = DECL_CHAIN (t))
if (TREE_CODE (t) == FIELD_DECL)
++count;
 
return count;
}
 
static inline tree
is_ivar (tree decl_chain, tree ident)
{
for ( ; decl_chain; decl_chain = DECL_CHAIN (decl_chain))
if (DECL_NAME (decl_chain) == ident)
return decl_chain;
return NULL_TREE;
}
 
#endif /* GCC_OBJC_ACT_H */
/gcc/objc/objc-map.c
0,0 → 1,161
/* objc-map.c -- Implementation of map data structures for ObjC compiler
Copyright 2011 Free Software Foundation, Inc.
Written by Nicola Pero <nicola.pero@meta-innovation.com>
 
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser Public License as published by the
Free Software Foundation; either version 3, or (at your option) any
later version.
 
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser Public License for more details.
 
You should have received a copy of the GNU Lesser Public License
along with this program; if not, write to the Free Software
Foundation, 51 Franklin Street - Fifth Floor,
Boston, MA 02110-1301, USA. */
 
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tree.h"
#include "ggc.h"
#include "objc-map.h"
 
#define OUT_OF_MEMORY { fprintf (stderr, "Out of memory\n"); abort (); }
 
static
size_t
ATTRIBUTE_PURE
next_power_of_two (size_t x)
{
size_t result = 1;
 
if (x < 2)
return 2;
 
/* Avoid the long calculation if x is already a power of two. Since
we internally always increase/shrink tables by powers of 2, the
calculation should only be done once, when the table is first
set up. */
if ((x & (x - 1)) == 0)
return x;
 
/* Calculate log_2 by counting how many times we can divide by 2
before reaching 0. */
while (x > 0)
{
x = x >> 1;
result = result << 1;
}
return result;
}
 
objc_map_t
objc_map_alloc_ggc (size_t initial_capacity)
{
objc_map_t map = (objc_map_t) ggc_internal_cleared_vec_alloc_stat (1, sizeof (struct objc_map_private));
if (map == NULL)
OUT_OF_MEMORY;
initial_capacity = next_power_of_two (initial_capacity);
map->number_of_slots = initial_capacity;
map->mask = initial_capacity - 1;
map->maximum_load_factor = 70;
map->max_number_of_non_empty_slots = (initial_capacity * map->maximum_load_factor) / 100;
 
map->slots = (tree *)ggc_internal_cleared_vec_alloc_stat (initial_capacity, sizeof (tree));
map->values = (tree *)ggc_internal_cleared_vec_alloc_stat (initial_capacity, sizeof (tree));
 
if (map->slots == NULL)
OUT_OF_MEMORY;
if (map->values == NULL)
OUT_OF_MEMORY;
 
return map;
}
 
void
objc_map_set_maximum_load_factor (objc_map_t map, int number_between_zero_and_one_hundred)
{
if (map->number_of_non_empty_slots != 0)
return;
 
map->maximum_load_factor = number_between_zero_and_one_hundred;
map->max_number_of_non_empty_slots = (map->number_of_slots * number_between_zero_and_one_hundred) / 100;
}
 
int
objc_map_maximum_load_factor (objc_map_t map)
{
return map->maximum_load_factor;
}
 
static void
objc_map_private_resize (objc_map_t map, size_t new_number_of_slots)
{
tree *old_slots = map->slots;
tree *old_values = map->values;
size_t i, old_number_of_slots = map->number_of_slots;
if (new_number_of_slots < (map->number_of_non_empty_slots))
new_number_of_slots = 2 * map->number_of_non_empty_slots;
 
new_number_of_slots = next_power_of_two (new_number_of_slots);
map->number_of_slots = new_number_of_slots;
map->mask = map->number_of_slots - 1;
map->max_number_of_non_empty_slots = (map->number_of_slots * map->maximum_load_factor) / 100;
 
 
map->slots = (tree *)ggc_internal_cleared_vec_alloc_stat (map->number_of_slots, sizeof (tree));
map->values = (tree *)ggc_internal_cleared_vec_alloc_stat (map->number_of_slots, sizeof (tree));
 
if (map->slots == NULL)
OUT_OF_MEMORY;
 
if (map->values == NULL)
OUT_OF_MEMORY;
 
for (i = 0; i < old_number_of_slots; i++)
if (old_slots[i] != OBJC_MAP_PRIVATE_EMPTY_SLOT)
{
size_t k = IDENTIFIER_HASH_VALUE (old_slots[i]) & map->mask;
if (map->slots[k] == OBJC_MAP_PRIVATE_EMPTY_SLOT)
{
map->slots[k] = old_slots[i];
map->values[k] = old_values[i];
}
else
{
size_t j = 1;
while (1)
{
k = (k + j) & map->mask;
if (map->slots[k] == OBJC_MAP_PRIVATE_EMPTY_SLOT)
{
map->slots[k] = old_slots[i];
map->values[k] = old_values[i];
break;
}
j++;
}
}
}
 
ggc_free (old_slots);
ggc_free (old_values);
}
 
void
objc_map_private_grow (struct objc_map_private *map)
{
objc_map_private_resize (map, map->number_of_slots * 2);
}
 
#include "gt-objc-objc-map.h"
/gcc/objc/objc-lang.c
0,0 → 1,60
/* Language-dependent hooks for Objective-C.
Copyright 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2010, 2011
Free Software Foundation, Inc.
Contributed by Ziemowit Laski <zlaski@apple.com>
 
This file is part of GCC.
 
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
 
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
 
 
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "tree.h"
#include "c-tree.h"
#include "c-family/c-common.h"
#include "c-family/c-objc.h"
#include "ggc.h"
#include "objc-act.h"
#include "langhooks.h"
#include "langhooks-def.h"
#include "c-objc-common.h"
#include "c-lang.h"
 
enum c_language_kind c_language = clk_objc;
 
/* Lang hooks common to C and ObjC are declared in c-objc-common.h;
consequently, there should be very few hooks below. */
 
#undef LANG_HOOKS_NAME
#define LANG_HOOKS_NAME "GNU Objective-C"
#undef LANG_HOOKS_INIT
#define LANG_HOOKS_INIT objc_init
#undef LANG_HOOKS_DECL_PRINTABLE_NAME
#define LANG_HOOKS_DECL_PRINTABLE_NAME objc_printable_name
#undef LANG_HOOKS_GIMPLIFY_EXPR
#define LANG_HOOKS_GIMPLIFY_EXPR objc_gimplify_expr
#undef LANG_HOOKS_INIT_TS
#define LANG_HOOKS_INIT_TS objc_common_init_ts
 
/* Each front end provides its own lang hook initializer. */
struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
 
/* Lang hook routines common to C and ObjC appear in c-objc-common.c;
there should be very few (if any) routines below. */
 
#include "gtype-objc.h"
/gcc/objc/objc-gnu-runtime-abi-01.c
0,0 → 1,2271
/* GNU Runtime ABI version 8
Copyright (C) 2011 Free Software Foundation, Inc.
Contributed by Iain Sandoe (split from objc-act.c)
 
This file is part of GCC.
 
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
 
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
 
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tree.h"
 
#ifdef OBJCPLUS
#include "cp-tree.h"
#else
#include "c-tree.h"
#include "c-lang.h"
#endif
 
#include "langhooks.h"
#include "c-family/c-objc.h"
#include "objc-act.h"
 
/* When building Objective-C++, we are not linking against the C front-end
and so need to replicate the C tree-construction functions in some way. */
#ifdef OBJCPLUS
#define OBJCP_REMAP_FUNCTIONS
#include "objcp-decl.h"
#endif /* OBJCPLUS */
 
#include "toplev.h"
#include "ggc.h"
#include "tree-iterator.h"
 
#include "objc-runtime-hooks.h"
#include "objc-runtime-shared-support.h"
#include "objc-encoding.h"
 
/* GNU runtime private definitions. */
#define DEF_CONSTANT_STRING_CLASS_NAME "NXConstantString"
 
#define TAG_GETCLASS "objc_get_class"
#define TAG_GETMETACLASS "objc_get_meta_class"
 
#define TAG_MSGSEND "objc_msg_lookup"
#define TAG_MSGSENDSUPER "objc_msg_lookup_super"
 
/* GNU-specific tags. */
 
#define TAG_EXECCLASS "__objc_exec_class"
#define TAG_GNUINIT "__objc_gnu_init"
 
/* The version identifies which language generation and runtime
the module (file) was compiled for, and is recorded in the
module descriptor. */
#define OBJC_VERSION 8
 
#define PROTOCOL_VERSION 2
 
/* This macro provides a method of removing ambiguity between runtimes
when LTO is in use on targets supporting multiple runtimes.
 
For example, at present, any target that includes an implementation of
the NeXT runtime needs to place Objective-C meta-data into specific
named sections. This should _not_ be done for the GNU runtime, and the
folowing macro is used to attach Objective-C private attributes that may
be used to identify the runtime for which the meta-data are intended. */
 
#define OBJCMETA(DECL,VERS,KIND) \
if (VERS) \
DECL_ATTRIBUTES (DECL) = build_tree_list ((VERS), (KIND));
 
static void gnu_runtime_01_initialize (void);
 
static void build_selector_template (void);
 
static tree gnu_runtime_abi_01_super_superclassfield_id (void);
 
static tree gnu_runtime_abi_01_class_decl (tree);
static tree gnu_runtime_abi_01_metaclass_decl (tree);
static tree gnu_runtime_abi_01_category_decl (tree);
static tree gnu_runtime_abi_01_protocol_decl (tree);
static tree gnu_runtime_abi_01_string_decl (tree, const char *, string_section);
 
static tree gnu_runtime_abi_01_get_class_reference (tree);
static tree gnu_runtime_abi_01_build_typed_selector_reference (location_t, tree,
tree);
static tree gnu_runtime_abi_01_get_protocol_reference (location_t, tree);
static tree gnu_runtime_abi_01_build_ivar_ref (location_t, tree, tree);
static tree gnu_runtime_abi_01_get_class_super_ref (location_t, struct imp_entry *, bool);
static tree gnu_runtime_abi_01_get_category_super_ref (location_t, struct imp_entry *, bool);
 
static tree gnu_runtime_abi_01_receiver_is_class_object (tree);
static void gnu_runtime_abi_01_get_arg_type_list_base (VEC(tree,gc) **, tree,
int, int);
static tree gnu_runtime_abi_01_build_objc_method_call (location_t, tree, tree,
tree, tree, tree, int);
 
static bool gnu_runtime_abi_01_setup_const_string_class_decl (void);
static tree gnu_runtime_abi_01_build_const_string_constructor (location_t, tree,int);
 
static void objc_generate_v1_gnu_metadata (void);
 
static tree objc_eh_runtime_type (tree type);
static tree objc_eh_personality (void);
static tree objc_build_exc_ptr (struct objc_try_context **);
static tree build_throw_stmt (location_t, tree, bool);
static tree begin_catch (struct objc_try_context **, tree, tree, tree, bool);
static void finish_catch (struct objc_try_context **, tree);
static tree finish_try_stmt (struct objc_try_context **);
 
bool
objc_gnu_runtime_abi_01_init (objc_runtime_hooks *rthooks)
{
/* GNU runtime does not need the compiler to change code in order to do GC. */
if (flag_objc_gc)
{
warning_at (0, 0, "%<-fobjc-gc%> is ignored for %<-fgnu-runtime%>");
flag_objc_gc = 0;
}
 
/* Although I guess we could, we don't currently support SJLJ exceptions for the
GNU runtime. */
if (flag_objc_sjlj_exceptions)
{
inform (UNKNOWN_LOCATION, "%<-fobjc-sjlj-exceptions%> is ignored for %<-fgnu-runtime%>");
flag_objc_sjlj_exceptions = 0;
}
 
/* TODO: Complain if -fobjc-abi-version=N was used. */
 
/* TODO: Complain if -fobj-nilcheck was used. */
 
rthooks->initialize = gnu_runtime_01_initialize;
rthooks->default_constant_string_class_name = DEF_CONSTANT_STRING_CLASS_NAME;
rthooks->tag_getclass = TAG_GETCLASS;
rthooks->super_superclassfield_ident = gnu_runtime_abi_01_super_superclassfield_id;
 
rthooks->class_decl = gnu_runtime_abi_01_class_decl;
rthooks->metaclass_decl = gnu_runtime_abi_01_metaclass_decl;
rthooks->category_decl = gnu_runtime_abi_01_category_decl;
rthooks->protocol_decl = gnu_runtime_abi_01_protocol_decl;
rthooks->string_decl = gnu_runtime_abi_01_string_decl;
 
rthooks->get_class_reference = gnu_runtime_abi_01_get_class_reference;
rthooks->build_selector_reference = gnu_runtime_abi_01_build_typed_selector_reference;
rthooks->get_protocol_reference = gnu_runtime_abi_01_get_protocol_reference;
rthooks->build_ivar_reference = gnu_runtime_abi_01_build_ivar_ref;
rthooks->get_class_super_ref = gnu_runtime_abi_01_get_class_super_ref;
rthooks->get_category_super_ref = gnu_runtime_abi_01_get_category_super_ref;
 
rthooks->receiver_is_class_object = gnu_runtime_abi_01_receiver_is_class_object;
rthooks->get_arg_type_list_base = gnu_runtime_abi_01_get_arg_type_list_base;
rthooks->build_objc_method_call = gnu_runtime_abi_01_build_objc_method_call;
 
rthooks->setup_const_string_class_decl =
gnu_runtime_abi_01_setup_const_string_class_decl;
rthooks->build_const_string_constructor =
gnu_runtime_abi_01_build_const_string_constructor;
 
rthooks->build_throw_stmt = build_throw_stmt;
rthooks->build_exc_ptr = objc_build_exc_ptr;
rthooks->begin_catch = begin_catch;
rthooks->finish_catch = finish_catch;
rthooks->finish_try_stmt = finish_try_stmt;
 
rthooks->generate_metadata = objc_generate_v1_gnu_metadata;
return true;
}
 
static void build_selector_table_decl (void);
static void build_class_template (void);
static void build_category_template (void);
static void build_protocol_template (void);
 
static GTY(()) tree objc_meta;
static GTY(()) tree meta_base;
 
static void gnu_runtime_01_initialize (void)
{
tree type, ftype, IMP_type;
 
/* We do not need to mark GNU ObjC metadata for different sections,
however, we do need to make sure that it is not mistaken for NeXT
metadata. */
objc_meta = get_identifier ("OBJC1METG");
meta_base = get_identifier ("NONE");
 
/* Declare type of selector-objects that represent an operation name. */
/* `const struct objc_selector *' */
type = xref_tag (RECORD_TYPE, get_identifier (TAG_SELECTOR));
type = build_qualified_type (type, TYPE_QUAL_CONST);
objc_selector_type = build_pointer_type (type);
 
/* typedef id (*IMP)(id, SEL, ...); */
ftype = build_varargs_function_type_list (objc_object_type,
objc_object_type,
objc_selector_type,
NULL_TREE);
 
IMP_type = build_pointer_type (ftype);
 
build_class_template ();
build_super_template ();
build_protocol_template ();
build_category_template ();
 
/* GNU runtime messenger entry points. */
/* TREE_NOTHROW is cleared for the message-sending functions,
because the function that gets called can throw in Obj-C++, or
could itself call something that can throw even in Obj-C. */
 
/* IMP objc_msg_lookup (id, SEL); */
type = build_function_type_list (IMP_type,
objc_object_type,
objc_selector_type,
NULL_TREE);
 
umsg_decl = add_builtin_function (TAG_MSGSEND,
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
TREE_NOTHROW (umsg_decl) = 0;
 
/* IMP objc_msg_lookup_super (struct objc_super *, SEL); */
type = build_function_type_list (IMP_type,
objc_super_type,
objc_selector_type,
NULL_TREE);
 
umsg_super_decl = add_builtin_function (TAG_MSGSENDSUPER,
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
TREE_NOTHROW (umsg_super_decl) = 0;
 
/* The following GNU runtime entry point is called to initialize
each module:
 
__objc_exec_class (void *); */
type = build_function_type_list (void_type_node,
ptr_type_node,
NULL_TREE);
 
execclass_decl = add_builtin_function (TAG_EXECCLASS,
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
 
type = build_function_type_list (objc_object_type,
const_string_type_node,
NULL_TREE);
 
/* id objc_getClass (const char *); */
objc_get_class_decl
= add_builtin_function (TAG_GETCLASS, type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
 
/* id objc_getMetaClass (const char *); */
objc_get_meta_class_decl = add_builtin_function (TAG_GETMETACLASS, type,
0, NOT_BUILT_IN, NULL,
NULL_TREE);
 
/* static SEL _OBJC_SELECTOR_TABLE[]; */
build_selector_table_decl ();
 
/* Stuff for properties.
The codegen relies on this being NULL for GNU. */
objc_copyStruct_decl = NULL_TREE;
 
/* This is the type of all of the following functions
bjc_getPropertyStruct() and objc_setPropertyStruct(). */
type = build_function_type_list (void_type_node,
ptr_type_node,
const_ptr_type_node,
ptrdiff_type_node,
boolean_type_node,
boolean_type_node,
NULL_TREE);
 
/* Declare the following function:
void
objc_getPropertyStruct (void *destination, const void *source,
ptrdiff_t size, BOOL is_atomic, BOOL has_strong); */
objc_getPropertyStruct_decl = add_builtin_function ("objc_getPropertyStruct",
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
TREE_NOTHROW (objc_getPropertyStruct_decl) = 0;
/* Declare the following function:
void
objc_setPropertyStruct (void *destination, const void *source,
ptrdiff_t size, BOOL is_atomic, BOOL has_strong); */
objc_setPropertyStruct_decl = add_builtin_function ("objc_setPropertyStruct",
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
TREE_NOTHROW (objc_setPropertyStruct_decl) = 0;
 
using_eh_for_cleanups ();
lang_hooks.eh_runtime_type = objc_eh_runtime_type;
lang_hooks.eh_personality = objc_eh_personality;
}
 
/* --- templates --- */
/* struct _objc_selector {
SEL sel_id;
char *sel_type;
}; */
 
static void
build_selector_template (void)
{
tree decls, *chain = NULL;
 
objc_selector_template = objc_start_struct (get_identifier (UTAG_SELECTOR));
 
/* SEL sel_id; */
decls = add_field_decl (objc_selector_type, "sel_id", &chain);
 
/* char *sel_type; */
add_field_decl (string_type_node, "sel_type", &chain);
 
objc_finish_struct (objc_selector_template, decls);
}
 
/* struct _objc_class {
struct _objc_class *isa;
struct _objc_class *super_class;
char *name;
long version;
long info;
long instance_size;
struct _objc_ivar_list *ivars;
struct _objc_method_list *methods;
struct sarray *dtable;
struct _objc_class *subclass_list;
struct _objc_class *sibling_class;
struct _objc_protocol_list *protocols;
void *gc_object_type;
}; */
 
static void
build_class_template (void)
{
tree ptype, decls, *chain = NULL;
 
objc_class_template = objc_start_struct (get_identifier (UTAG_CLASS));
 
/* struct _objc_class *isa; */
decls = add_field_decl (build_pointer_type (objc_class_template),
"isa", &chain);
 
/* struct _objc_class *super_class; */
add_field_decl (build_pointer_type (objc_class_template),
"super_class", &chain);
 
/* char *name; */
add_field_decl (string_type_node, "name", &chain);
 
/* long version; */
add_field_decl (long_integer_type_node, "version", &chain);
 
/* long info; */
add_field_decl (long_integer_type_node, "info", &chain);
 
/* long instance_size; */
add_field_decl (long_integer_type_node, "instance_size", &chain);
 
/* struct _objc_ivar_list *ivars; */
add_field_decl (objc_ivar_list_ptr,"ivars", &chain);
 
/* struct _objc_method_list *methods; */
add_field_decl (objc_method_list_ptr, "methods", &chain);
 
/* struct sarray *dtable; */
ptype = build_pointer_type(xref_tag (RECORD_TYPE,
get_identifier ("sarray")));
add_field_decl (ptype, "dtable", &chain);
 
/* struct objc_class *subclass_list; */
ptype = build_pointer_type (objc_class_template);
add_field_decl (ptype, "subclass_list", &chain);
 
/* struct objc_class *sibling_class; */
ptype = build_pointer_type (objc_class_template);
add_field_decl (ptype, "sibling_class", &chain);
 
/* struct _objc_protocol **protocol_list; */
ptype = build_pointer_type (build_pointer_type
(xref_tag (RECORD_TYPE,
get_identifier (UTAG_PROTOCOL))));
add_field_decl (ptype, "protocol_list", &chain);
 
/* void *gc_object_type; */
add_field_decl (build_pointer_type (void_type_node),
"gc_object_type", &chain);
 
objc_finish_struct (objc_class_template, decls);
}
 
/* struct _objc_category {
char *category_name;
char *class_name;
struct _objc_method_list *instance_methods;
struct _objc_method_list *class_methods;
struct _objc_protocol_list *protocols;
}; */
 
static void
build_category_template (void)
{
tree ptype, decls, *chain = NULL;
 
objc_category_template = objc_start_struct (get_identifier (UTAG_CATEGORY));
 
/* char *category_name; */
decls = add_field_decl (string_type_node, "category_name", &chain);
 
/* char *class_name; */
add_field_decl (string_type_node, "class_name", &chain);
 
/* struct _objc_method_list *instance_methods; */
add_field_decl (objc_method_list_ptr, "instance_methods", &chain);
 
/* struct _objc_method_list *class_methods; */
add_field_decl (objc_method_list_ptr, "class_methods", &chain);
 
/* struct _objc_protocol **protocol_list; */
ptype = build_pointer_type (build_pointer_type (objc_protocol_template));
add_field_decl (ptype, "protocol_list", &chain);
 
objc_finish_struct (objc_category_template, decls);
}
 
/* struct _objc_protocol {
struct _objc_class *isa;
char *protocol_name;
struct _objc_protocol **protocol_list;
struct _objc__method_prototype_list *instance_methods;
struct _objc__method_prototype_list *class_methods;
}; */
 
static void
build_protocol_template (void)
{
tree ptype, decls, *chain = NULL;
 
objc_protocol_template = objc_start_struct (get_identifier (UTAG_PROTOCOL));
 
/* struct _objc_class *isa; */
ptype = build_pointer_type (xref_tag (RECORD_TYPE,
get_identifier (UTAG_CLASS)));
decls = add_field_decl (ptype, "isa", &chain);
 
/* char *protocol_name; */
add_field_decl (string_type_node, "protocol_name", &chain);
 
/* struct _objc_protocol **protocol_list; */
ptype = build_pointer_type (build_pointer_type (objc_protocol_template));
add_field_decl (ptype, "protocol_list", &chain);
 
/* struct _objc__method_prototype_list *instance_methods; */
add_field_decl (objc_method_proto_list_ptr, "instance_methods", &chain);
 
/* struct _objc__method_prototype_list *class_methods; */
add_field_decl (objc_method_proto_list_ptr, "class_methods", &chain);
 
objc_finish_struct (objc_protocol_template, decls);
}
 
/* --- names, decls + identifers --- */
 
static void
build_selector_table_decl (void)
{
tree temp;
 
build_selector_template ();
temp = build_array_type (objc_selector_template, NULL_TREE);
 
UOBJC_SELECTOR_TABLE_decl = start_var_decl (temp, "_OBJC_SELECTOR_TABLE");
OBJCMETA (UOBJC_SELECTOR_TABLE_decl, objc_meta, meta_base);
}
 
 
static tree
gnu_runtime_abi_01_super_superclassfield_id (void)
{
if (!super_superclassfield_id)
super_superclassfield_id = get_identifier ("super_class");
return super_superclassfield_id;
}
 
 
static tree
gnu_runtime_abi_01_class_decl (tree klass)
{
tree decl;
char buf[BUFSIZE];
snprintf (buf, BUFSIZE, "_OBJC_Class_%s",
IDENTIFIER_POINTER (CLASS_NAME (klass)));
decl = start_var_decl (objc_class_template, buf);
OBJCMETA (decl, objc_meta, meta_base);
return decl;
}
 
static tree
gnu_runtime_abi_01_metaclass_decl (tree klass)
{
tree decl;
char buf[BUFSIZE];
snprintf (buf, BUFSIZE, "_OBJC_MetaClass_%s",
IDENTIFIER_POINTER (CLASS_NAME (klass)));
decl = start_var_decl (objc_class_template, buf);
OBJCMETA (decl, objc_meta, meta_base);
return decl;
}
 
static tree
gnu_runtime_abi_01_category_decl (tree klass)
{
tree decl;
char buf[BUFSIZE];
snprintf (buf, BUFSIZE, "_OBJC_Category_%s_on_%s",
IDENTIFIER_POINTER (CLASS_SUPER_NAME (klass)),
IDENTIFIER_POINTER (CLASS_NAME (klass)));
decl = start_var_decl (objc_category_template, buf);
OBJCMETA (decl, objc_meta, meta_base);
return decl;
}
 
static tree
gnu_runtime_abi_01_protocol_decl (tree p)
{
tree decl;
char buf[BUFSIZE];
 
/* static struct _objc_protocol _OBJC_Protocol_<mumble>; */
snprintf (buf, BUFSIZE, "_OBJC_Protocol_%s",
IDENTIFIER_POINTER (PROTOCOL_NAME (p)));
decl = start_var_decl (objc_protocol_template, buf);
OBJCMETA (decl, objc_meta, meta_base);
return decl;
}
 
static tree
gnu_runtime_abi_01_string_decl (tree type, const char *name,
string_section where ATTRIBUTE_UNUSED)
{
tree decl = start_var_decl (type, name);
OBJCMETA (decl, objc_meta, meta_base);
return decl;
}
 
/* --- entry --- */
 
static tree
gnu_runtime_abi_01_get_class_reference (tree ident)
{
tree params;
 
add_class_reference (ident);
 
params = build_tree_list (NULL_TREE, my_build_string_pointer
(IDENTIFIER_LENGTH (ident) + 1,
IDENTIFIER_POINTER (ident)));
 
/* FIXME: Do we need this assemble_external() ? */
/* assemble_external (objc_get_class_decl);*/
return build_function_call (input_location, objc_get_class_decl, params);
}
 
/* Used by build_function_type_for_method. Append the types for
receiver & _cmd at the start of a method argument list to ARGTYPES.
CONTEXT is either METHOD_DEF or METHOD_REF, saying whether we are
trying to define a method or call one. SUPERFLAG says this is for a
send to super. METH may be NULL, in the case that there is no
prototype. */
 
static void
gnu_runtime_abi_01_get_arg_type_list_base (VEC(tree,gc) **argtypes, tree meth,
int context,
int superflag ATTRIBUTE_UNUSED)
{
tree receiver_type;
 
if (context == METHOD_DEF && TREE_CODE (meth) == INSTANCE_METHOD_DECL)
receiver_type = objc_instance_type;
else
receiver_type = objc_object_type;
 
VEC_safe_push (tree, gc, *argtypes, receiver_type);
/* Selector type - will eventually change to `int'. */
VEC_safe_push (tree, gc, *argtypes, objc_selector_type);
}
 
/* Unused for GNU runtime. */
static tree
gnu_runtime_abi_01_receiver_is_class_object (tree a ATTRIBUTE_UNUSED)
{
return NULL_TREE;
}
 
/* sel_ref_chain is a list whose "value" fields will be instances of
identifier_node that represent the selector. LOC is the location of
the @selector. */
 
static tree
gnu_runtime_abi_01_build_typed_selector_reference (location_t loc, tree ident,
tree prototype)
{
tree *chain = &sel_ref_chain;
tree expr;
int index = 0;
 
while (*chain)
{
/* When we do a lookup for @selector () we have no idea of the
prototype - so match the first we find. */
if (TREE_VALUE (*chain) == ident
&& (!prototype || TREE_PURPOSE (*chain) == prototype))
goto return_at_index;
 
index++;
chain = &TREE_CHAIN (*chain);
}
 
*chain = tree_cons (prototype, ident, NULL_TREE);
 
/* TODO: Use a vec and keep this in it to (a) avoid re-creating and
(b) provide better diagnostics for the first time an undefined
selector is used. */
return_at_index:
expr = build_unary_op (loc, ADDR_EXPR,
build_array_ref (loc, UOBJC_SELECTOR_TABLE_decl,
build_int_cst (NULL_TREE, index)),
1);
return convert (objc_selector_type, expr);
}
 
/* Build a tree expression to send OBJECT the operation SELECTOR,
looking up the method on object LOOKUP_OBJECT (often same as OBJECT),
assuming the method has prototype METHOD_PROTOTYPE.
(That is an INSTANCE_METHOD_DECL or CLASS_METHOD_DECL.)
LOC is the location of the expression to build.
Use METHOD_PARAMS as list of args to pass to the method.
If SUPER_FLAG is nonzero, we look up the superclass's method. */
 
static tree
build_objc_method_call (location_t loc, int super_flag, tree method_prototype,
tree lookup_object, tree selector,
tree method_params)
{
tree sender = (super_flag ? umsg_super_decl
: (flag_objc_direct_dispatch ? umsg_fast_decl
: umsg_decl));
tree rcv_p = (super_flag ? objc_super_type : objc_object_type);
VEC(tree, gc) *parms;
VEC(tree, gc) *tv;
unsigned nparm = (method_params ? list_length (method_params) : 0);
 
/* If a prototype for the method to be called exists, then cast
the sender's return type and arguments to match that of the method.
Otherwise, leave sender as is. */
tree ret_type
= (method_prototype
? TREE_VALUE (TREE_TYPE (method_prototype))
: objc_object_type);
tree ftype
= build_function_type_for_method (ret_type, method_prototype,
METHOD_REF, super_flag);
tree sender_cast;
tree method, t;
 
if (method_prototype && METHOD_TYPE_ATTRIBUTES (method_prototype))
ftype = build_type_attribute_variant (ftype,
METHOD_TYPE_ATTRIBUTES
(method_prototype));
 
sender_cast = build_pointer_type (ftype);
 
lookup_object = build_c_cast (loc, rcv_p, lookup_object);
 
/* Use SAVE_EXPR to avoid evaluating the receiver twice. */
lookup_object = save_expr (lookup_object);
 
/* Param list + 2 slots for object and selector. */
parms = VEC_alloc (tree, gc, nparm + 2);
tv = VEC_alloc (tree, gc, 2);
 
/* First, call the lookup function to get a pointer to the method,
then cast the pointer, then call it with the method arguments. */
VEC_quick_push (tree, tv, lookup_object);
VEC_quick_push (tree, tv, selector);
method = build_function_call_vec (loc, sender, tv, NULL);
VEC_free (tree, gc, tv);
 
/* Pass the appropriate object to the method. */
VEC_quick_push (tree, parms, (super_flag ? self_decl : lookup_object));
 
/* Pass the selector to the method. */
VEC_quick_push (tree, parms, selector);
/* Now append the remainder of the parms. */
if (nparm)
for (; method_params; method_params = TREE_CHAIN (method_params))
VEC_quick_push (tree, parms, TREE_VALUE (method_params));
 
/* Build an obj_type_ref, with the correct cast for the method call. */
t = build3 (OBJ_TYPE_REF, sender_cast, method, lookup_object, size_zero_node);
t = build_function_call_vec (loc, t, parms, NULL);
VEC_free (tree, gc, parms);
return t;
}
 
static tree
gnu_runtime_abi_01_build_objc_method_call (location_t loc,
tree method_prototype,
tree receiver,
tree rtype ATTRIBUTE_UNUSED,
tree sel_name,
tree method_params,
int super ATTRIBUTE_UNUSED)
{
tree selector =
gnu_runtime_abi_01_build_typed_selector_reference (loc,
sel_name,
method_prototype);
 
return build_objc_method_call (loc, super, method_prototype, receiver,
selector, method_params);
}
 
static tree
gnu_runtime_abi_01_get_protocol_reference (location_t loc, tree p)
{
tree expr, protocol_struct_type, *chain;
if (!PROTOCOL_FORWARD_DECL (p))
PROTOCOL_FORWARD_DECL (p) = gnu_runtime_abi_01_protocol_decl (p);
 
expr = build_unary_op (loc, ADDR_EXPR, PROTOCOL_FORWARD_DECL (p), 0);
 
/* ??? Ideally we'd build the reference with objc_protocol_type directly,
if we have it, rather than converting it here. */
expr = convert (objc_protocol_type, expr);
 
/* The @protocol() expression is being compiled into a pointer to a
statically allocated instance of the Protocol class. To become
usable at runtime, the 'isa' pointer of the instance need to be
fixed up at runtime by the runtime library, to point to the
actual 'Protocol' class. */
 
/* For the GNU runtime, put the static Protocol instance in the list
of statically allocated instances, so that we make sure that its
'isa' pointer is fixed up at runtime by the GNU runtime library
to point to the Protocol class (at runtime, when loading the
module, the GNU runtime library loops on the statically allocated
instances (as found in the defs field in objc_symtab) and fixups
all the 'isa' pointers of those objects). */
 
/* This type is a struct containing the fields of a Protocol
object. (Cfr. objc_protocol_type instead is the type of a pointer
to such a struct). */
protocol_struct_type = xref_tag (RECORD_TYPE,
get_identifier (PROTOCOL_OBJECT_CLASS_NAME));
 
/* Look for the list of Protocol statically allocated instances
to fixup at runtime. Create a new list to hold Protocol
statically allocated instances, if the list is not found. At
present there is only another list, holding NSConstantString
static instances to be fixed up at runtime. */
 
for (chain = &objc_static_instances;
*chain && TREE_VALUE (*chain) != protocol_struct_type;
chain = &TREE_CHAIN (*chain));
 
if (!*chain)
{
*chain = tree_cons (NULL_TREE, protocol_struct_type, NULL_TREE);
add_objc_string (OBJC_TYPE_NAME (protocol_struct_type),
class_names);
}
 
/* Add this statically allocated instance to the Protocol list. */
TREE_PURPOSE (*chain) = tree_cons (NULL_TREE,
PROTOCOL_FORWARD_DECL (p),
TREE_PURPOSE (*chain));
return expr;
}
 
/* For ABI 8 an IVAR is just a fixed offset in the class struct. */
 
static tree
gnu_runtime_abi_01_build_ivar_ref (location_t loc ATTRIBUTE_UNUSED,
tree base, tree id)
{
return objc_build_component_ref (base, id);
}
 
/* We build super class references as we need them (but keep them once
built for the sake of efficiency). */
 
static tree
gnu_runtime_abi_01_get_class_super_ref (location_t loc ATTRIBUTE_UNUSED,
struct imp_entry *imp, bool inst_meth)
{
if (inst_meth)
{
if (!ucls_super_ref)
ucls_super_ref =
objc_build_component_ref (imp->class_decl,
get_identifier ("super_class"));
return ucls_super_ref;
}
else
{
if (!uucls_super_ref)
uucls_super_ref =
objc_build_component_ref (imp->meta_decl,
get_identifier ("super_class"));
return uucls_super_ref;
}
}
 
static tree
gnu_runtime_abi_01_get_category_super_ref (location_t loc ATTRIBUTE_UNUSED,
struct imp_entry *imp, bool inst_meth)
{
tree super_name = CLASS_SUPER_NAME (imp->imp_template);
tree super_class;
 
add_class_reference (super_name);
super_class = (inst_meth ? objc_get_class_decl : objc_get_meta_class_decl);
/* FIXME: Do we need this assemble_external() ? */
/* assemble_external (super_class);*/
super_name = my_build_string_pointer (IDENTIFIER_LENGTH (super_name) + 1,
IDENTIFIER_POINTER (super_name));
/* super_class = get_{meta_}class("CLASS_SUPER_NAME"); */
return build_function_call (input_location,
super_class,
build_tree_list (NULL_TREE, super_name));
}
 
static bool
gnu_runtime_abi_01_setup_const_string_class_decl (void)
{
/* Do nothing, and create no error. */
return true;
}
 
/* Declare a static instance of CLASS_DECL initialized by CONSTRUCTOR. */
 
static GTY(()) int num_static_inst;
 
static tree
objc_add_static_instance (tree constructor, tree class_decl)
{
tree *chain, decl;
char buf[BUFSIZE];
 
/* Find the list of static instances for the CLASS_DECL. Create one if
not found. */
for (chain = &objc_static_instances;
*chain && TREE_VALUE (*chain) != class_decl;
chain = &TREE_CHAIN (*chain));
if (!*chain)
{
*chain = tree_cons (NULL_TREE, class_decl, NULL_TREE);
add_objc_string (OBJC_TYPE_NAME (class_decl), class_names);
}
 
snprintf (buf, BUFSIZE, "_OBJC_INSTANCE_%d", num_static_inst++);
decl = build_decl (input_location,
VAR_DECL, get_identifier (buf), class_decl);
TREE_STATIC (decl) = 1;
DECL_ARTIFICIAL (decl) = 1;
TREE_USED (decl) = 1;
DECL_INITIAL (decl) = constructor;
DECL_CONTEXT (decl) = NULL;
OBJCMETA (decl, objc_meta, meta_base);
 
/* We may be writing something else just now.
Postpone till end of input. */
DECL_DEFER_OUTPUT (decl) = 1;
pushdecl_top_level (decl);
rest_of_decl_compilation (decl, 1, 0);
 
/* Add the DECL to the head of this CLASS' list. */
TREE_PURPOSE (*chain) = tree_cons (NULL_TREE, decl, TREE_PURPOSE (*chain));
 
return decl;
}
 
static tree
gnu_runtime_abi_01_build_const_string_constructor (location_t loc, tree string,
int length)
{
tree constructor, fields;
VEC(constructor_elt,gc) *v = NULL;
 
/* GNU: (NXConstantString *) & ((__builtin_ObjCString) { NULL, string, length }) */
fields = TYPE_FIELDS (internal_const_str_type);
CONSTRUCTOR_APPEND_ELT (v, fields, build_int_cst (NULL_TREE, 0));
 
fields = DECL_CHAIN (fields);
CONSTRUCTOR_APPEND_ELT (v, fields, build_unary_op (loc,
ADDR_EXPR, string, 1));
 
fields = DECL_CHAIN (fields);
CONSTRUCTOR_APPEND_ELT (v, fields, build_int_cst (NULL_TREE, length));
constructor = objc_build_constructor (internal_const_str_type, v);
 
constructor = objc_add_static_instance (constructor, constant_string_type);
return constructor;
}
 
/* --- metadata - module initializer --- */
 
/* The GNU runtime requires us to provide a static initializer function
for each module:
 
static void __objc_gnu_init (void) {
__objc_exec_class (&L_OBJC_MODULES);
} */
 
 
static void
build_module_initializer_routine (void)
{
tree body;
 
#ifdef OBJCPLUS
push_lang_context (lang_name_c); /* extern "C" */
#endif
 
objc_push_parm (build_decl (input_location,
PARM_DECL, NULL_TREE, void_type_node));
#ifdef OBJCPLUS
objc_start_function (get_identifier (TAG_GNUINIT),
build_function_type_list (void_type_node, NULL_TREE),
NULL_TREE, NULL_TREE);
#else
objc_start_function (get_identifier (TAG_GNUINIT),
build_function_type_list (void_type_node, NULL_TREE),
NULL_TREE, objc_get_parm_info (0, NULL_TREE));
#endif
body = c_begin_compound_stmt (true);
add_stmt (build_function_call
(input_location,
execclass_decl,
build_tree_list
(NULL_TREE,
build_unary_op (input_location, ADDR_EXPR,
UOBJC_MODULES_decl, 0))));
add_stmt (c_end_compound_stmt (input_location, body, true));
 
TREE_PUBLIC (current_function_decl) = 0;
 
#ifndef OBJCPLUS
/* For Objective-C++, we will need to call __objc_gnu_init
from objc_generate_static_init_call() below. */
DECL_STATIC_CONSTRUCTOR (current_function_decl) = 1;
#endif
 
GNU_INIT_decl = current_function_decl;
finish_function ();
 
#ifdef OBJCPLUS
pop_lang_context ();
#endif
}
 
#ifdef OBJCPLUS
/* Return 1 if the __objc_gnu_init function has been synthesized and needs
to be called by the module initializer routine. */
 
int
objc_static_init_needed_p (void)
{
return (GNU_INIT_decl != NULL_TREE);
}
 
/* Generate a call to the __objc_gnu_init initializer function. */
 
tree
objc_generate_static_init_call (tree ctors ATTRIBUTE_UNUSED)
{
add_stmt (build_stmt (input_location, EXPR_STMT,
build_function_call (input_location,
GNU_INIT_decl, NULL_TREE)));
 
return ctors;
}
#endif /* OBJCPLUS */
 
/* --- Output GNU Meta-data --- */
 
static void
generate_classref_translation_entry (tree chain)
{
tree expr, decl, type;
 
decl = TREE_PURPOSE (chain);
type = TREE_TYPE (decl);
 
expr = add_objc_string (TREE_VALUE (chain), class_names);
expr = convert (type, expr); /* cast! */
 
/* This is a class reference. It is re-written by the runtime,
but will be optimized away unless we force it. */
DECL_PRESERVE_P (decl) = 1;
OBJCMETA (decl, objc_meta, meta_base);
finish_var_decl (decl, expr);
return;
}
 
 
static void
handle_impent (struct imp_entry *impent)
{
char *string;
 
/* objc_implementation_context = impent->imp_context;
implementation_template = impent->imp_template;*/
 
switch (TREE_CODE (impent->imp_context))
{
case CLASS_IMPLEMENTATION_TYPE:
{
const char *const class_name =
IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context));
 
string = (char *) alloca (strlen (class_name) + 30);
 
sprintf (string, "__objc_class_name_%s", class_name);
break;
}
case CATEGORY_IMPLEMENTATION_TYPE:
{
const char *const class_name =
IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context));
const char *const class_super_name =
IDENTIFIER_POINTER (CLASS_SUPER_NAME (impent->imp_context));
 
string = (char *) alloca (strlen (class_name)
+ strlen (class_super_name) + 30);
 
/* Do the same for categories. Even though no references to
these symbols are generated automatically by the compiler,
it gives you a handle to pull them into an archive by
hand. */
sprintf (string, "*__objc_category_name_%s_%s", class_name, class_super_name);
break;
}
default:
return;
}
 
{
tree decl, init;
 
init = integer_zero_node;
decl = build_decl (input_location,
VAR_DECL, get_identifier (string), TREE_TYPE (init));
TREE_PUBLIC (decl) = 1;
TREE_READONLY (decl) = 1;
TREE_USED (decl) = 1;
TREE_CONSTANT (decl) = 1;
DECL_CONTEXT (decl) = NULL_TREE;
DECL_ARTIFICIAL (decl) = 1;
TREE_STATIC (decl) = 1;
DECL_INITIAL (decl) = error_mark_node; /* A real initializer is coming... */
/* We must force the reference. */
DECL_PRESERVE_P (decl) = 1;
 
finish_var_decl(decl, init) ;
}
}
 
tree
build_protocol_initializer (tree type, tree protocol_name, tree protocol_list,
tree inst_methods, tree class_methods)
{
tree expr, ttyp;
location_t loc;
VEC(constructor_elt,gc) *inits = NULL;
 
/* TODO: pass the loc in or find it from args. */
loc = input_location;
ttyp = build_pointer_type (xref_tag (RECORD_TYPE,
get_identifier (UTAG_CLASS)));
/* Filling the "isa" in with a version allows the runtime system to
detect this ... */
expr = build_int_cst (ttyp, PROTOCOL_VERSION);
 
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr);
 
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, protocol_name);
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, protocol_list);
 
ttyp = objc_method_proto_list_ptr;
if (inst_methods)
expr = convert (ttyp, build_unary_op (loc, ADDR_EXPR, inst_methods, 0));
else
expr = convert (ttyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr);
 
if (class_methods)
expr = convert (ttyp, build_unary_op (loc, ADDR_EXPR, class_methods, 0));
else
expr = convert (ttyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr);
 
return objc_build_constructor (type, inits);
}
 
static tree
generate_protocol_list (tree i_or_p, tree klass_ctxt)
{
tree array_type, ptype, refs_decl, lproto, e, plist;
VEC(constructor_elt,gc) *v = NULL;
char buf[BUFSIZE];
int size = 0;
 
switch (TREE_CODE (i_or_p))
{
case CLASS_INTERFACE_TYPE:
case CATEGORY_INTERFACE_TYPE:
plist = CLASS_PROTOCOL_LIST (i_or_p);
break;
case PROTOCOL_INTERFACE_TYPE:
plist = PROTOCOL_LIST (i_or_p);
break;
default:
gcc_unreachable ();
}
 
/* Compute size. */
for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto))
if (TREE_CODE (TREE_VALUE (lproto)) == PROTOCOL_INTERFACE_TYPE
&& PROTOCOL_FORWARD_DECL (TREE_VALUE (lproto)))
size++;
 
/* Build initializer. */
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, build_int_cst (NULL_TREE, 0));
e = build_int_cst (build_pointer_type (objc_protocol_template), size);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, e);
 
for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto))
{
tree pval = TREE_VALUE (lproto);
 
if (TREE_CODE (pval) == PROTOCOL_INTERFACE_TYPE
&& PROTOCOL_FORWARD_DECL (pval))
{
tree fwref = PROTOCOL_FORWARD_DECL (pval);
location_t loc = DECL_SOURCE_LOCATION (fwref) ;
e = build_unary_op (loc, ADDR_EXPR, fwref, 0);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, e);
}
}
 
/* static struct objc_protocol *refs[n]; */
 
switch (TREE_CODE (i_or_p))
{
case PROTOCOL_INTERFACE_TYPE:
snprintf (buf, BUFSIZE, "_OBJC_ProtocolRefs_%s",
IDENTIFIER_POINTER (PROTOCOL_NAME (i_or_p)));
break;
case CLASS_INTERFACE_TYPE:
snprintf (buf, BUFSIZE, "_OBJC_ClassProtocols_%s",
IDENTIFIER_POINTER (CLASS_NAME (i_or_p)));
break;
case CATEGORY_INTERFACE_TYPE:
snprintf (buf, BUFSIZE, "_OBJC_CategoryProtocols_%s_%s",
IDENTIFIER_POINTER (CLASS_NAME (klass_ctxt)),
IDENTIFIER_POINTER (CLASS_SUPER_NAME (klass_ctxt)));
break;
default:
gcc_unreachable ();
}
 
ptype = build_pointer_type (objc_protocol_template);
array_type = build_sized_array_type (ptype, size + 3);
refs_decl = start_var_decl (array_type, buf);
OBJCMETA (refs_decl, objc_meta, meta_base);
finish_var_decl (refs_decl,
objc_build_constructor (TREE_TYPE (refs_decl), v));
 
return refs_decl;
}
 
static tree
generate_v1_meth_descriptor_table (tree chain, tree protocol, const char *prefix)
{
tree method_list_template, initlist, decl;
int size;
VEC(constructor_elt,gc) *v = NULL;
char buf[BUFSIZE];
 
if (!chain || !prefix)
return NULL_TREE;
 
if (!objc_method_prototype_template)
objc_method_prototype_template = build_method_prototype_template ();
 
size = list_length (chain);
method_list_template =
build_method_prototype_list_template (objc_method_prototype_template,
size);
snprintf (buf, BUFSIZE, "%s_%s", prefix,
IDENTIFIER_POINTER (PROTOCOL_NAME (protocol)));
 
decl = start_var_decl (method_list_template, buf);
 
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, build_int_cst (NULL_TREE, size));
initlist =
build_descriptor_table_initializer (objc_method_prototype_template,
chain);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, initlist);
OBJCMETA (decl, objc_meta, meta_base);
finish_var_decl (decl, objc_build_constructor (method_list_template, v));
return decl;
}
 
/* For each protocol which was referenced either from a @protocol()
expression, or because a class/category implements it (then a
pointer to the protocol is stored in the struct describing the
class/category), we create a statically allocated instance of the
Protocol class. The code is written in such a way as to generate
as few Protocol objects as possible; we generate a unique Protocol
instance for each protocol, and we don't generate a Protocol
instance if the protocol is never referenced (either from a
@protocol() or from a class/category implementation). These
statically allocated objects can be referred to via the static
(that is, private to this module) symbols _OBJC_PROTOCOL_n.
 
The statically allocated Protocol objects that we generate here
need to be fixed up at runtime in order to be used: the 'isa'
pointer of the objects need to be set up to point to the 'Protocol'
class, as known at runtime.
 
The GNU runtime fixes up all protocols before user code from the module
is executed; it requires pointers to those symbols
to be put in the objc_symtab (which is then passed as argument to
the function __objc_exec_class() which the compiler sets up to be
executed automatically when the module is loaded); setup of those
Protocol objects happen in two ways in the GNU runtime: all
Protocol objects referred to by a class or category implementation
are fixed up when the class/category is loaded; all Protocol
objects referred to by a @protocol() expression are added by the
compiler to the list of statically allocated instances to fixup
(the same list holding the statically allocated constant string
objects). Because, as explained above, the compiler generates as
few Protocol objects as possible, some Protocol object might end up
being referenced multiple times when compiled with the GNU runtime,
and end up being fixed up multiple times at runtime initialization.
But that doesn't hurt, it's just a little inefficient. */
 
static void
generate_protocols (void)
{
tree p, encoding;
tree decl;
tree initlist, protocol_name_expr, refs_decl, refs_expr;
 
/* If a protocol was directly referenced, pull in indirect references. */
for (p = protocol_chain; p; p = TREE_CHAIN (p))
if (PROTOCOL_FORWARD_DECL (p) && PROTOCOL_LIST (p))
generate_protocol_references (PROTOCOL_LIST (p));
 
for (p = protocol_chain; p; p = TREE_CHAIN (p))
{
tree nst_methods = PROTOCOL_NST_METHODS (p);
tree cls_methods = PROTOCOL_CLS_METHODS (p);
 
/* If protocol wasn't referenced, don't generate any code. */
decl = PROTOCOL_FORWARD_DECL (p);
 
if (!decl)
continue;
 
/* Make sure we link in the Protocol class. */
add_class_reference (get_identifier (PROTOCOL_OBJECT_CLASS_NAME));
 
while (nst_methods)
{
if (! METHOD_ENCODING (nst_methods))
{
encoding = encode_method_prototype (nst_methods);
METHOD_ENCODING (nst_methods) = encoding;
}
nst_methods = DECL_CHAIN (nst_methods);
}
 
UOBJC_INSTANCE_METHODS_decl =
generate_v1_meth_descriptor_table (PROTOCOL_NST_METHODS (p), p,
"_OBJC_PROTOCOL_INSTANCE_METHODS");
 
while (cls_methods)
{
if (! METHOD_ENCODING (cls_methods))
{
encoding = encode_method_prototype (cls_methods);
METHOD_ENCODING (cls_methods) = encoding;
}
 
cls_methods = DECL_CHAIN (cls_methods);
}
 
UOBJC_CLASS_METHODS_decl =
generate_v1_meth_descriptor_table (PROTOCOL_CLS_METHODS (p), p,
"_OBJC_PROTOCOL_CLASS_METHODS");
/* generate_method_descriptors (p);*/
 
if (PROTOCOL_LIST (p))
refs_decl = generate_protocol_list (p, NULL_TREE);
else
refs_decl = 0;
 
/* static struct objc_protocol _OBJC_PROTOCOL_<mumble>; */
protocol_name_expr = add_objc_string (PROTOCOL_NAME (p), class_names);
 
if (refs_decl)
refs_expr = convert (build_pointer_type (build_pointer_type
(objc_protocol_template)),
build_unary_op (input_location,
ADDR_EXPR, refs_decl, 0));
else
refs_expr = build_int_cst (NULL_TREE, 0);
 
/* UOBJC_INSTANCE_METHODS_decl/UOBJC_CLASS_METHODS_decl are set
by generate_method_descriptors, which is called above. */
initlist = build_protocol_initializer (TREE_TYPE (decl),
protocol_name_expr, refs_expr,
UOBJC_INSTANCE_METHODS_decl,
UOBJC_CLASS_METHODS_decl);
finish_var_decl (decl, initlist);
}
}
 
static tree
generate_dispatch_table (tree chain, const char *name)
{
tree decl, method_list_template, initlist;
VEC(constructor_elt,gc) *v = NULL;
int size = list_length (chain);
 
if (!objc_method_template)
objc_method_template = build_method_template ();
 
method_list_template = build_method_list_template (objc_method_template,
size);
initlist = build_dispatch_table_initializer (objc_method_template, chain);
 
decl = start_var_decl (method_list_template, name);
 
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, integer_zero_node);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
build_int_cst (integer_type_node, size));
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, initlist);
 
OBJCMETA (decl, objc_meta, meta_base);
finish_var_decl (decl,
objc_build_constructor (TREE_TYPE (decl), v));
 
return decl;
}
 
/* Init a category. */
static tree
build_category_initializer (tree type, tree cat_name, tree class_name,
tree inst_methods, tree class_methods,
tree protocol_list)
{
tree expr, ltyp;
location_t loc;
VEC(constructor_elt,gc) *v = NULL;
 
/* TODO: pass the loc in or find it from args. */
/* TODO: pass the loc in or find it from args. */
loc = UNKNOWN_LOCATION;
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, cat_name);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, class_name);
 
ltyp = objc_method_list_ptr;
if (inst_methods)
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, inst_methods, 0));
else
expr = convert (ltyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
 
if (class_methods)
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, class_methods, 0));
else
expr = convert (ltyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
 
/* protocol_list = */
ltyp = build_pointer_type (build_pointer_type (objc_protocol_template));
if (protocol_list)
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, protocol_list, 0));
else
expr = convert (ltyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
 
return objc_build_constructor (type, v);
}
 
/* static struct objc_category _OBJC_CATEGORY_<name> = { ... }; */
 
static void
generate_category (struct imp_entry *impent)
{
tree initlist, cat_name_expr, class_name_expr;
tree protocol_decl, category, cat_decl;
tree inst_methods = NULL_TREE, class_methods = NULL_TREE;
tree cat = impent->imp_context;
char buf[BUFSIZE];
 
cat_decl = impent->class_decl;
 
add_class_reference (CLASS_NAME (cat));
cat_name_expr = add_objc_string (CLASS_SUPER_NAME (cat), class_names);
 
class_name_expr = add_objc_string (CLASS_NAME (cat), class_names);
 
category = lookup_category (impent->imp_template, CLASS_SUPER_NAME (cat));
 
if (category && CLASS_PROTOCOL_LIST (category))
{
generate_protocol_references (CLASS_PROTOCOL_LIST (category));
protocol_decl = generate_protocol_list (category, cat);
}
else
protocol_decl = 0;
 
if (CLASS_NST_METHODS (cat))
{
snprintf (buf, BUFSIZE, "_OBJC_CategoryInstanceMethods_%s_%s",
IDENTIFIER_POINTER (CLASS_NAME (cat)),
IDENTIFIER_POINTER (CLASS_SUPER_NAME (cat)));
inst_methods = generate_dispatch_table (CLASS_NST_METHODS (cat), buf);
}
 
if (CLASS_CLS_METHODS (cat))
{
snprintf (buf, BUFSIZE, "_OBJC_CategoryClassMethods_%s_%s",
IDENTIFIER_POINTER (CLASS_NAME (cat)),
IDENTIFIER_POINTER (CLASS_SUPER_NAME (cat)));
class_methods = generate_dispatch_table (CLASS_CLS_METHODS (cat), buf);
}
 
initlist = build_category_initializer (TREE_TYPE (cat_decl),
cat_name_expr, class_name_expr,
inst_methods, class_methods,
protocol_decl);
/* Finish and initialize the forward decl. */
finish_var_decl (cat_decl, initlist);
impent->class_decl = cat_decl;
}
 
/* struct _objc_class {
struct objc_class *isa;
struct objc_class *super_class;
char *name;
long version;
long info;
long instance_size;
struct objc_ivar_list *ivars;
struct objc_method_list *methods;
struct sarray *dtable;
struct objc_class *subclass_list;
struct objc_class *sibling_class;
struct objc_protocol_list *protocols;
void *gc_object_type;
}; */
 
static tree
build_shared_structure_initializer (tree type, tree isa, tree super,
tree name, tree size, int status,
tree dispatch_table, tree ivar_list,
tree protocol_list)
{
tree expr, ltyp;
VEC(constructor_elt,gc) *v = NULL;
 
/* isa = */
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, isa);
 
/* super_class = */
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, super);
 
/* name = */
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, default_conversion (name));
 
/* version = */
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
build_int_cst (long_integer_type_node, 0));
 
/* info = */
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
build_int_cst (long_integer_type_node, status));
 
/* instance_size = */
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
convert (long_integer_type_node, size));
 
/* objc_ivar_list = */
if (!ivar_list)
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
build_int_cst (objc_ivar_list_ptr, 0));
else
{
expr = convert (objc_ivar_list_ptr,
build_unary_op (input_location, ADDR_EXPR,
ivar_list, 0));
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
}
 
/* objc_method_list = */
if (!dispatch_table)
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
convert (objc_method_list_ptr, null_pointer_node));
else
{
expr = convert (objc_method_list_ptr,
build_unary_op (input_location, ADDR_EXPR,
dispatch_table, 0));
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
}
 
/* FIXME: Remove NeXT runtime code. */
if (flag_next_runtime)
{
ltyp = build_pointer_type (xref_tag (RECORD_TYPE,
get_identifier ("objc_cache")));
/* method_cache = */
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, convert (ltyp, null_pointer_node));
}
else
{
/* dtable = */
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, build_int_cst (NULL_TREE, 0));
 
/* subclass_list = */
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, build_int_cst (NULL_TREE, 0));
 
/* sibling_class = */
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, build_int_cst (NULL_TREE, 0));
}
 
/* protocol_list = */
ltyp = build_pointer_type (build_pointer_type (objc_protocol_template));
if (! protocol_list)
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, build_int_cst (ltyp, 0));
else
{
expr = convert (ltyp,
build_unary_op (input_location, ADDR_EXPR,
protocol_list, 0));
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
}
 
/* FIXME: Remove NeXT runtime code. */
if (flag_next_runtime)
/* sel_id = NULL */
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, build_int_cst (NULL_TREE, 0));
 
/* gc_object_type = NULL */
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, build_int_cst (NULL_TREE, 0));
 
return objc_build_constructor (type, v);
}
 
 
static tree
generate_ivars_list (tree chain, const char *name)
{
tree initlist, ivar_list_template, decl;
int size;
VEC(constructor_elt,gc) *inits = NULL;
 
if (!chain)
return NULL_TREE;
 
if (!objc_ivar_template)
objc_ivar_template = build_ivar_template ();
 
size = ivar_list_length (chain);
 
generating_instance_variables = 1;
ivar_list_template = build_ivar_list_template (objc_ivar_template, size);
initlist = build_ivar_list_initializer (objc_ivar_template, chain);
generating_instance_variables = 0;
 
decl = start_var_decl (ivar_list_template, name);
 
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, build_int_cst (NULL_TREE, size));
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, initlist);
 
OBJCMETA (decl, objc_meta, meta_base);
finish_var_decl (decl,
objc_build_constructor (TREE_TYPE (decl), inits));
 
return decl;
}
 
/* static struct objc_class _OBJC_METACLASS_Foo={ ... };
static struct objc_class _OBJC_CLASS_Foo={ ... }; */
 
static void
generate_class_structures (struct imp_entry *impent)
{
tree name_expr, super_expr, root_expr, class_decl, meta_decl;
tree my_root_id, my_super_id;
tree cast_type, initlist, protocol_decl;
tree inst_methods = NULL_TREE, class_methods = NULL_TREE;
tree chain, inst_ivars = NULL_TREE, class_ivars = NULL_TREE;
location_t loc;
char buf[BUFSIZE];
int cls_flags = 0 ;
 
/* objc_implementation_context = impent->imp_context;
implementation_template = impent->imp_template;*/
class_decl = impent->class_decl;
meta_decl = impent->meta_decl;
/* UOBJC_CLASS_decl = impent->class_decl;
UOBJC_METACLASS_decl = impent->meta_decl;*/
 
loc = DECL_SOURCE_LOCATION (impent->class_decl);
 
my_super_id = CLASS_SUPER_NAME (impent->imp_template);
if (my_super_id)
{
add_class_reference (my_super_id);
 
/* Compute "my_root_id" - this is required for code generation.
the "isa" for all meta class structures points to the root of
the inheritance hierarchy (e.g. "__Object")... */
my_root_id = my_super_id;
do
{
tree my_root_int = lookup_interface (my_root_id);
 
if (my_root_int && CLASS_SUPER_NAME (my_root_int))
my_root_id = CLASS_SUPER_NAME (my_root_int);
else
break;
}
while (1);
}
else
/* No super class. */
my_root_id = CLASS_NAME (impent->imp_template);
 
cast_type = build_pointer_type (objc_class_template);
name_expr = add_objc_string (CLASS_NAME (impent->imp_template),
class_names);
 
/* Install class `isa' and `super' pointers at runtime. */
if (my_super_id)
super_expr = add_objc_string (my_super_id, class_names);
else
super_expr = null_pointer_node;
 
super_expr = build_c_cast (loc, cast_type, super_expr);
 
root_expr = add_objc_string (my_root_id, class_names);
root_expr = build_c_cast (loc, cast_type, root_expr);
 
if (CLASS_PROTOCOL_LIST (impent->imp_template))
{
generate_protocol_references (CLASS_PROTOCOL_LIST (impent->imp_template));
protocol_decl = generate_protocol_list (impent->imp_template,
impent->imp_context);
}
else
protocol_decl = NULL_TREE;
 
if (CLASS_CLS_METHODS (impent->imp_context))
{
snprintf (buf, BUFSIZE, "_OBJC_ClassMethods_%s",
IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)));
class_methods = generate_dispatch_table (CLASS_CLS_METHODS (impent->imp_context),
buf);
}
 
if (CLASS_SUPER_NAME (impent->imp_template) == NULL_TREE
&& (chain = TYPE_FIELDS (objc_class_template)))
{
snprintf (buf, BUFSIZE, "_OBJC_ClassIvars_%s",
IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)));
class_ivars = generate_ivars_list (chain, buf);
}
 
/* static struct objc_class _OBJC_METACLASS_Foo = { ... }; */
 
initlist =
build_shared_structure_initializer
(TREE_TYPE (meta_decl),
root_expr, super_expr, name_expr,
convert (integer_type_node,
TYPE_SIZE_UNIT (objc_class_template)),
CLS_META, class_methods, class_ivars,
protocol_decl);
 
finish_var_decl (meta_decl, initlist);
impent->meta_decl = meta_decl;
 
/* static struct objc_class _OBJC_CLASS_Foo={ ... }; */
if (CLASS_NST_METHODS (impent->imp_context))
{
snprintf (buf, BUFSIZE, "_OBJC_InstanceMethods_%s",
IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)));
inst_methods = generate_dispatch_table (CLASS_NST_METHODS (impent->imp_context),
buf);
}
 
if ((chain = CLASS_IVARS (impent->imp_template)))
{
snprintf (buf, BUFSIZE, "_OBJC_InstanceIvars_%s",
IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)));
inst_ivars = generate_ivars_list (chain, buf);
}
 
initlist =
build_shared_structure_initializer
(TREE_TYPE (class_decl),
build_unary_op (loc, ADDR_EXPR, meta_decl, 0),
super_expr, name_expr,
convert (integer_type_node,
TYPE_SIZE_UNIT (CLASS_STATIC_TEMPLATE
(impent->imp_template))),
CLS_FACTORY | cls_flags, inst_methods, inst_ivars,
protocol_decl);
 
finish_var_decl (class_decl, initlist);
impent->class_decl = class_decl;
}
 
/* --- Output GNU Metadata --- */
 
/* TODO: Make this into an array of refs. */
static void
handle_class_ref (tree chain)
{
const char *name = IDENTIFIER_POINTER (TREE_VALUE (chain));
char *string = (char *) alloca (strlen (name) + 30);
tree decl;
tree exp;
 
sprintf (string, "__objc_class_name_%s", name);
 
/* Make a decl for this name, so we can use its address in a tree. */
decl = build_decl (input_location,
VAR_DECL, get_identifier (string), TREE_TYPE (integer_zero_node));
DECL_EXTERNAL (decl) = 1;
TREE_PUBLIC (decl) = 1;
DECL_CONTEXT (decl) = NULL_TREE;
finish_var_decl (decl, 0);
 
/* Make a decl for the address. */
sprintf (string, "__objc_class_ref_%s", name);
exp = build1 (ADDR_EXPR, string_type_node, decl);
decl = build_decl (input_location,
VAR_DECL, get_identifier (string), string_type_node);
TREE_STATIC (decl) = 1;
TREE_USED (decl) = 1;
DECL_READ_P (decl) = 1;
DECL_ARTIFICIAL (decl) = 1;
DECL_INITIAL (decl) = error_mark_node;
 
/* We must force the reference. */
DECL_PRESERVE_P (decl) = 1;
 
DECL_CONTEXT (decl) = NULL_TREE;
finish_var_decl (decl, exp);
}
 
static tree
get_proto_encoding (tree proto)
{
tree encoding;
if (proto)
{
if (! METHOD_ENCODING (proto))
{
encoding = encode_method_prototype (proto);
METHOD_ENCODING (proto) = encoding;
}
else
encoding = METHOD_ENCODING (proto);
 
return add_objc_string (encoding, meth_var_types);
}
else
return build_int_cst (NULL_TREE, 0);
}
 
static void
build_gnu_selector_translation_table (void)
{
tree chain, expr;
VEC(constructor_elt,gc) *inits = NULL;
VEC(constructor_elt,gc) *v ;
 
/* Cause the selector table (previously forward-declared)
to be actually output. */
 
for (chain = sel_ref_chain; chain; chain = TREE_CHAIN (chain))
{
tree encoding;
if (warn_selector)
{
/* TODO: improve on the location for the diagnostic. */
location_t loc = input_location;
diagnose_missing_method (TREE_VALUE (chain), loc);
}
 
v = NULL;
expr = build_selector (TREE_VALUE (chain));
encoding = get_proto_encoding (TREE_PURPOSE (chain));
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, encoding);
expr = objc_build_constructor (objc_selector_template, v);
 
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr);
} /* each element in the chain */
 
/* List terminator. */
v = NULL;
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, integer_zero_node);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, integer_zero_node);
expr = objc_build_constructor (objc_selector_template, v);
 
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr);
expr = objc_build_constructor (TREE_TYPE (UOBJC_SELECTOR_TABLE_decl),
inits);
finish_var_decl (UOBJC_SELECTOR_TABLE_decl, expr);
}
 
/* Output references to all statically allocated objects. Return the DECL
for the array built. */
 
static void
generate_static_references (void)
{
tree expr = NULL_TREE;
tree class_name, klass, decl;
tree cl_chain, in_chain, type
= build_array_type (build_pointer_type (void_type_node), NULL_TREE);
int num_inst, num_class;
char buf[BUFSIZE];
VEC(constructor_elt,gc) *decls = NULL;
 
/* FIXME: Remove NeXT runtime code. */
if (flag_next_runtime)
gcc_unreachable ();
 
for (cl_chain = objc_static_instances, num_class = 0;
cl_chain; cl_chain = TREE_CHAIN (cl_chain), num_class++)
{
VEC(constructor_elt,gc) *v = NULL;
 
for (num_inst = 0, in_chain = TREE_PURPOSE (cl_chain);
in_chain; num_inst++, in_chain = TREE_CHAIN (in_chain));
 
snprintf (buf, BUFSIZE, "_OBJC_STATIC_INSTANCES_%d", num_class);
decl = start_var_decl (type, buf);
 
/* Output {class_name, ...}. */
klass = TREE_VALUE (cl_chain);
class_name = get_objc_string_decl (OBJC_TYPE_NAME (klass), class_names);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
build_unary_op (input_location,
ADDR_EXPR, class_name, 1));
 
/* Output {..., instance, ...}. */
for (in_chain = TREE_PURPOSE (cl_chain);
in_chain; in_chain = TREE_CHAIN (in_chain))
{
expr = build_unary_op (input_location,
ADDR_EXPR, TREE_VALUE (in_chain), 1);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
}
 
/* Output {..., NULL}. */
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, build_int_cst (NULL_TREE, 0));
 
expr = objc_build_constructor (TREE_TYPE (decl), v);
OBJCMETA (decl, objc_meta, meta_base);
finish_var_decl (decl, expr);
CONSTRUCTOR_APPEND_ELT (decls, NULL_TREE,
build_unary_op (input_location,
ADDR_EXPR, decl, 1));
}
 
CONSTRUCTOR_APPEND_ELT (decls, NULL_TREE, build_int_cst (NULL_TREE, 0));
expr = objc_build_constructor (type, decls);
static_instances_decl = start_var_decl (type, "_OBJC_STATIC_INSTANCES");
OBJCMETA (static_instances_decl, objc_meta, meta_base);
finish_var_decl (static_instances_decl, expr);
}
 
/* Create the initial value for the `defs' field of _objc_symtab.
This is a CONSTRUCTOR. */
 
static tree
init_def_list (tree type)
{
tree expr;
struct imp_entry *impent;
location_t loc;
VEC(constructor_elt,gc) *v = NULL;
 
if (imp_count)
for (impent = imp_list; impent; impent = impent->next)
{
if (TREE_CODE (impent->imp_context) == CLASS_IMPLEMENTATION_TYPE)
{
loc = DECL_SOURCE_LOCATION (impent->class_decl);
expr = build_unary_op (loc,
ADDR_EXPR, impent->class_decl, 0);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
}
}
 
if (cat_count)
for (impent = imp_list; impent; impent = impent->next)
{
if (TREE_CODE (impent->imp_context) == CATEGORY_IMPLEMENTATION_TYPE)
{
loc = DECL_SOURCE_LOCATION (impent->class_decl);
expr = build_unary_op (loc,
ADDR_EXPR, impent->class_decl, 0);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
}
}
 
loc = UNKNOWN_LOCATION;
/* statics = { ..., _OBJC_STATIC_INSTANCES, ... } */
if (static_instances_decl)
expr = build_unary_op (loc, ADDR_EXPR, static_instances_decl, 0);
else
expr = integer_zero_node;
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
 
return objc_build_constructor (type, v);
}
 
/* Take care of defining and initializing _OBJC_SYMBOLS. */
 
/* Predefine the following data type:
 
struct _objc_symtab
{
long sel_ref_cnt;
SEL *refs;
short cls_def_cnt;
short cat_def_cnt;
void *defs[cls_def_cnt + cat_def_cnt];
}; */
 
static void
build_objc_symtab_template (void)
{
tree fields, array_type, *chain = NULL;
int index;
 
objc_symtab_template = objc_start_struct (get_identifier (UTAG_SYMTAB));
 
/* long sel_ref_cnt; */
fields = add_field_decl (long_integer_type_node, "sel_ref_cnt", &chain);
 
/* SEL *refs; */
add_field_decl (build_pointer_type (objc_selector_type), "refs", &chain);
 
/* short cls_def_cnt; */
add_field_decl (short_integer_type_node, "cls_def_cnt", &chain);
 
/* short cat_def_cnt; */
add_field_decl (short_integer_type_node, "cat_def_cnt", &chain);
 
/* Note that padding will be added here on LP64. */
 
/* void *defs[imp_count + cat_count (+ 1)]; */
/* NB: The index is one less than the size of the array. */
index = imp_count + cat_count;
array_type = build_sized_array_type (ptr_type_node, index + 1);
add_field_decl (array_type, "defs", &chain);
 
objc_finish_struct (objc_symtab_template, fields);
}
/* Construct the initial value for all of _objc_symtab. */
 
static tree
init_objc_symtab (tree type)
{
tree field, expr, ltyp;
location_t loc;
VEC(constructor_elt,gc) *v = NULL;
 
loc = UNKNOWN_LOCATION;
 
/* sel_ref_cnt = { ..., 5, ... } */
 
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
build_int_cst (long_integer_type_node, 0));
 
/* refs = { ..., _OBJC_SELECTOR_TABLE, ... } */
 
ltyp = build_pointer_type (objc_selector_type);
if (sel_ref_chain)
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR,
UOBJC_SELECTOR_TABLE_decl, 1));
else
expr = convert (ltyp, null_pointer_node);
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
 
/* cls_def_cnt = { ..., 5, ... } */
 
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
build_int_cst (short_integer_type_node, imp_count));
 
/* cat_def_cnt = { ..., 5, ... } */
 
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
build_int_cst (short_integer_type_node, cat_count));
 
/* cls_def = { ..., { &Foo, &Bar, ...}, ... } */
 
field = TYPE_FIELDS (type);
field = DECL_CHAIN (DECL_CHAIN (DECL_CHAIN (DECL_CHAIN (field))));
 
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, init_def_list (TREE_TYPE (field)));
 
return objc_build_constructor (type, v);
}
 
/* Create the declaration of _OBJC_SYMBOLS, with type `struct _objc_symtab'
and initialized appropriately. */
 
static void
generate_objc_symtab_decl (void)
{
build_objc_symtab_template ();
UOBJC_SYMBOLS_decl = start_var_decl (objc_symtab_template, "_OBJC_SYMBOLS");
OBJCMETA (UOBJC_SYMBOLS_decl, objc_meta, meta_base);
finish_var_decl (UOBJC_SYMBOLS_decl,
init_objc_symtab (TREE_TYPE (UOBJC_SYMBOLS_decl)));
}
 
static void
objc_generate_v1_gnu_metadata (void)
{
struct imp_entry *impent;
tree chain;
 
/* Process the static instances here because initialization of objc_symtab
depends on them. */
if (objc_static_instances)
generate_static_references ();
 
objc_implementation_context =
implementation_template =
UOBJC_CLASS_decl =
UOBJC_METACLASS_decl = NULL_TREE;
 
for (impent = imp_list; impent; impent = impent->next)
{
/* If -gen-decls is present, Dump the @interface of each class.
TODO: Dump the classes in the order they were found, rather than in
reverse order as we are doing now. */
if (flag_gen_declaration)
dump_interface (gen_declaration_file, impent->imp_context);
 
/* all of the following reference the string pool... */
if (TREE_CODE (impent->imp_context) == CLASS_IMPLEMENTATION_TYPE)
generate_class_structures (impent);
else
generate_category (impent);
}
 
/* If we are using an array of selectors, we must always
finish up the array decl even if no selectors were used. */
build_gnu_selector_translation_table ();
 
if (protocol_chain)
generate_protocols ();
 
/* Arrange for ObjC data structures to be initialized at run time. */
/* FIXME: Have some more elegant way to determine if we need to
generate objc_symtab_decl or not, instead of checking these
global symbols. */
if (imp_list || class_names_chain
|| meth_var_names_chain || meth_var_types_chain || sel_ref_chain
|| prop_names_attr_chain)
generate_objc_symtab_decl ();
 
if (imp_list || class_names_chain || objc_static_instances
|| meth_var_names_chain || meth_var_types_chain || sel_ref_chain)
{
/* Make sure that the meta-data are identified as being
GNU-runtime. */
build_module_descriptor (OBJC_VERSION,
build_tree_list (objc_meta, meta_base));
build_module_initializer_routine ();
}
 
/* Dump the class references. This forces the appropriate classes
to be linked into the executable image, preserving unix archive
semantics. This can be removed when we move to a more dynamically
linked environment. */
 
for (chain = cls_ref_chain; chain; chain = TREE_CHAIN (chain))
{
handle_class_ref (chain);
if (TREE_PURPOSE (chain))
generate_classref_translation_entry (chain);
}
 
for (impent = imp_list; impent; impent = impent->next)
handle_impent (impent);
 
generate_strings ();
}
 
/* --- exceptions --- */
 
static GTY(()) tree objc_eh_personality_decl;
 
static tree
objc_eh_runtime_type (tree type)
{
tree ident, eh_id, decl, str;
 
if (type == error_mark_node
|| errorcount || sorrycount)
{
/* Use 'ErrorMarkNode' as class name when error_mark_node is found
to prevent an ICE. Note that we know that the compiler will
terminate with an error and this 'ErrorMarkNode' class name will
never be actually used. */
ident = get_identifier ("ErrorMarkNode");
goto make_err_class;
}
 
if (POINTER_TYPE_P (type) && objc_is_object_id (TREE_TYPE (type)))
/* We don't want to identify 'id' for GNU. Instead, build a 0
entry in the exceptions table. */
return null_pointer_node;
 
if (!POINTER_TYPE_P (type) || !TYPED_OBJECT (TREE_TYPE (type)))
{
#ifdef OBJCPLUS
/* This routine is also called for c++ catch clauses; in which case,
we use the c++ typeinfo decl. */
return build_eh_type_type (type);
#else
error ("non-objective-c type '%T' cannot be caught", type);
ident = get_identifier ("ErrorMarkNode");
goto make_err_class;
#endif
}
else
ident = OBJC_TYPE_NAME (TREE_TYPE (type));
 
make_err_class:
/* If this class was already referenced, then it will be output during
meta-data emission, so we don't need to do it here. */
decl = get_objc_string_decl (ident, class_names);
eh_id = add_objc_string (ident, class_names);
if (!decl)
{
/* Not found ... so we need to build it - from the freshly-entered id. */
decl = get_objc_string_decl (ident, class_names);
str = my_build_string (IDENTIFIER_LENGTH (ident) + 1,
IDENTIFIER_POINTER (ident));
/* We have to finalize this var here, because this might be called after
all the other metadata strings have been emitted. */
finish_var_decl (decl, str);
}
return eh_id;
}
 
static tree
objc_eh_personality (void)
{
if (!objc_eh_personality_decl)
#ifndef OBJCPLUS
objc_eh_personality_decl = build_personality_function ("gnu_objc");
#else
objc_eh_personality_decl = build_personality_function ("gxx");
#endif
return objc_eh_personality_decl;
}
 
/* -- interfaces --- */
 
static tree
build_throw_stmt (location_t loc, tree throw_expr, bool rethrown ATTRIBUTE_UNUSED)
{
tree t;
VEC(tree, gc) *parms = VEC_alloc (tree, gc, 1);
/* A throw is just a call to the runtime throw function with the
object as a parameter. */
VEC_quick_push (tree, parms, throw_expr);
t = build_function_call_vec (loc, objc_exception_throw_decl, parms, NULL);
VEC_free (tree, gc, parms);
return add_stmt (t);
}
 
/* Build __builtin_eh_pointer. */
 
static tree
objc_build_exc_ptr (struct objc_try_context **x ATTRIBUTE_UNUSED)
{
tree t;
t = builtin_decl_explicit (BUILT_IN_EH_POINTER);
t = build_call_expr (t, 1, integer_zero_node);
return fold_convert (objc_object_type, t);
}
 
static tree
begin_catch (struct objc_try_context **cur_try_context, tree type,
tree decl, tree compound, bool ellipsis ATTRIBUTE_UNUSED)
{
tree t;
/* Record the data for the catch in the try context so that we can
finalize it later. */
if (ellipsis)
t = build_stmt (input_location, CATCH_EXPR, NULL, compound);
else
t = build_stmt (input_location, CATCH_EXPR, type, compound);
(*cur_try_context)->current_catch = t;
 
/* Initialize the decl from the EXC_PTR_EXPR we get from the runtime. */
t = objc_build_exc_ptr (cur_try_context);
t = convert (TREE_TYPE (decl), t);
return build2 (MODIFY_EXPR, void_type_node, decl, t);
}
 
static void
finish_catch (struct objc_try_context **cur_try_context, tree current_catch)
{
append_to_statement_list (current_catch, &((*cur_try_context)->catch_list));
}
 
static tree
finish_try_stmt (struct objc_try_context **cur_try_context)
{
struct objc_try_context *c = *cur_try_context;
tree stmt = c->try_body;
if (c->catch_list)
stmt = build_stmt (c->try_locus, TRY_CATCH_EXPR, stmt, c->catch_list);
if (c->finally_body)
stmt = build_stmt (c->try_locus, TRY_FINALLY_EXPR, stmt, c->finally_body);
return stmt;
}
 
#include "gt-objc-objc-gnu-runtime-abi-01.h"
/gcc/objc/objc-map.h
0,0 → 1,309
/* objc-map.h -- Implementation of map data structures for ObjC compiler
Copyright 2011 Free Software Foundation, Inc.
Written by Nicola Pero <nicola.pero@meta-innovation.com>
 
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser Public License as published by the
Free Software Foundation; either version 3, or (at your option) any
later version.
 
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser Public License for more details.
 
You should have received a copy of the GNU Lesser Public License
along with this program; if not, write to the Free Software
Foundation, 51 Franklin Street - Fifth Floor,
Boston, MA 02110-1301, USA. */
 
#ifndef OBJC_MAP_H
#define OBJC_MAP_H
 
/* A map is a data structure that maps a key to a value. In this file
we currently have maps that can map a GCC identifier (a tree) to
some other GCC tree. This is what the ObjC frontend mostly needs:
being able to look up an identifier into an ObjC data structure. A
typical usage is mapping ObjC class names (as identifiers) to a
tree representing the class.
 
This implementation is fast. :-) */
 
/**
** Private definitions.
**/
 
/* We include private declaration and definitions that are required to
provide the implementation of inline functions. You should ignore
these definitions (and the implementation of the inline functions)
as they are not part of the public API and may change. */
typedef unsigned int objc_map_private_hash_t;
 
/* This is used as sentinel. */
#define OBJC_MAP_PRIVATE_EMPTY_SLOT (tree)0
 
struct GTY(()) objc_map_private {
/* Total number of slots. This is the maximum number of elements
that can be currently stored in the map before resizing. This is
the number of slots in the C array. Important: this is
guaranteed to be a power of 2. When we create (or resize) the
map, we round up the size to the next power of 2. This allows us
to convert a hash to a position in the hashtable by simply doing
"position = hash & mask", where mask is number_of_slots - 1
instead of using a modulo (which requires a division). */
size_t number_of_slots;
 
/* This is number_of_slots - 1, precomputed. */
size_t mask;
 
/* Number of slots that are not empty (ie, that are active). We
keep counts using this variable which can easily be checked
against max_number_of_non_empty_slots. */
size_t number_of_non_empty_slots;
 
/* This is the load factor limit. When the number of non empty
slots equals this number, we need to resize the array. This is
calculated once, when the slots are resized, and then kept cached
so it can be compared quickly when elements are added. */
size_t max_number_of_non_empty_slots;
 
/* The maximum load factor. */
int maximum_load_factor;
 
/* These are the keys. */
tree * GTY ((length ("%h.number_of_slots"))) slots;
 
/* These are the values. values[i] is the the value corresponding
to slots[i]. */
tree * GTY ((length ("%h.number_of_slots"))) values;
};
 
/* Private functions used to resize the map. They may be called by
the inline functions when adding elements. */
extern void
objc_map_private_grow (struct objc_map_private *map);
 
 
/**
** The definition of a map.
**/
typedef struct objc_map_private *objc_map_t;
 
 
/**
** Creating a map.
**/
 
/* objc_map_alloc_ggc() creates a new map which is under GGC. The initial
capacity must be specified as an argument; this is used to size the map
when it is created. */
objc_map_t objc_map_alloc_ggc (size_t initial_capacity);
 
/**
** Performance tuning.
**/
 
/* Set a maximum load factor for the data structure. This is the main
tuning parameter to improve performance (at the expense of
memory). */
void objc_map_set_maximum_load_factor (objc_map_t map, int number_between_zero_and_one_hundred);
 
/* Read the maximum load factor. */
int objc_map_maximum_load_factor (objc_map_t map);
 
 
/**
** Getting the value corresponding to a key.
**/
 
/* This is the value returned by objc_map_get() when the value
corresponding to a key is not found. */
#define OBJC_MAP_NOT_FOUND (tree)1
 
/* objc_map_get() returns the value associated with a certain key,
or OBJC_MAP_NOT_FOUND if there is no value associated with that key.
Note that you can also use it to simply check if the map contains a
pair with a certain key; just compare the result of calling
objc_map_get() to OBJC_MAP_NOT_FOUND.
 
It is essential to always check the results of the call to make
sure it is not OBJC_MAP_NOT_FOUND.
 
NULL is a valid value, so a key can be inserted into a map with
value NULL, and objc_map_get() will return NULL in that case.
So a result of NULL means that they key *was* found, and the value
associated with it was NULL. */
static inline tree
objc_map_get (objc_map_t map, /* struct tree_identifier * */tree key)
{
/* The inline implementation is private and may change without notice. */
objc_map_private_hash_t hash = IDENTIFIER_HASH_VALUE (key);
size_t i = hash & map->mask;
size_t j = 1;
 
if (map->slots[i] == OBJC_MAP_PRIVATE_EMPTY_SLOT)
return OBJC_MAP_NOT_FOUND;
 
if (map->slots[i] == key)
return map->values[i];
while (1)
{
i = (i + j) & map->mask;
if (map->slots[i] == OBJC_MAP_PRIVATE_EMPTY_SLOT)
return OBJC_MAP_NOT_FOUND;
if (map->slots[i] == key)
return map->values[i];
 
j++;
}
}
 
/* objc_map_put() puts a key/value pair into the map. If the map does
not contain the key, it is added to it with the specified value.
If the map already contains the key, the previous value is replaced
with the new one.
 
You can use any identifier as key, with the exception of NULL.
 
You can use any tree as value, including NULL. */
static inline
void objc_map_put (objc_map_t map, /*struct tree_identifier * */tree key, tree value)
{
/* The inline implementation is private and may change without notice. */
objc_map_private_hash_t hash = IDENTIFIER_HASH_VALUE (key);
size_t i, j = 0;
 
if (map->number_of_non_empty_slots == map->max_number_of_non_empty_slots)
objc_map_private_grow (map);
 
i = hash & map->mask;
while (1)
{
if (map->slots[i] == OBJC_MAP_PRIVATE_EMPTY_SLOT)
{
map->number_of_non_empty_slots++;
map->slots[i] = key;
map->values[i] = value;
return;
}
if (map->slots[i] == key)
{
map->values[i] = value;
return;
}
 
j++;
i = (i + j) & map->mask;
}
}
 
/**
** Iterating over a map using an iterator.
**/
 
/* When using iterators you can iterate directly on the elements in
the map, and take an action over each one.
 
Here is how you iterate over a hmap_pointer using iterators:
 
objc_map_iterator_t i;
 
objc_map_iterator_initialize (map, &i);
 
while (objc_map_iterator_move_to_next (map, &i))
{
tree p = objc_map_iterator_current_key (map, i);
tree q = objc_map_iterator_current_value (map, i);
 
... do something with p and q ...
}
 
You'll notice that the functions that modify the iterator (to
initialize it, or move it to the next element) take a pointer to it
as argument (as in "&i"), while the functions that only read its
state (to read the current key/value, or remove the current
key/value from the map) take it as a direct argument (as in "i").
 
Note that all the objc_map_iterator_*() functions are inline and if
you follow the pattern above, the compiler should be able to inline
everything into a very efficient loop, roughly equivalent to
hand-writing a C loop that iterates directly onto the hmap_pointer
internal data structures. */
 
/* A objc_map_iterator_t variable encapsulates the state of an
iteration. The fact that this is actually a size_t (pointing to
the index of the slot that we return next) is an internal, private
detail of the implementation and may change without notice. */
typedef size_t objc_map_iterator_t;
 
/* Initialize an iterator to iterate over the specified objc_map. You
must use this before starting the iteration, to get a working
iterator. */
static inline
void
objc_map_iterator_initialize (objc_map_t map ATTRIBUTE_UNUSED, objc_map_iterator_t *i)
{
/* The inline implementation is private and may change without notice. */
/* This is trivial, but the same API would work to initialize more
complicated iterators. */
*i = 0;
}
 
#define OBJC_MAP_FAILURE 0
#define OBJC_MAP_SUCCESS 1
 
/* Move the iterator to the next key/value pair, and return
OBJC_MAP_SUCCESS if there is such a key/value pair, and
OBJC_MAP_FAILURE if there are no more ones. The iterator must have
been initialized using objc_map_iterator_initialize(). Note that
because this function is modifying the iterator, you need to pass a
pointer to it. */
static inline
int
objc_map_iterator_move_to_next (objc_map_t map, objc_map_iterator_t *i)
{
/* The inline implementation is private and may change without notice. */
while (1)
{
void *slot;
if (*i == map->number_of_slots)
return OBJC_MAP_FAILURE;
slot = map->slots[*i];
*i = *i + 1;
if (slot != OBJC_MAP_PRIVATE_EMPTY_SLOT)
return OBJC_MAP_SUCCESS;
}
}
 
/* Return the current key. You can only call it after you have called
objc_map_iterator_move_to_next() at least once (to move to the
first element), and only if the last call returned
OBJC_MAP_SUCCESS. The behaviour is otherwise undefined, probably a
segmentation fault. */
static inline
tree
objc_map_iterator_current_key (objc_map_t map, objc_map_iterator_t i)
{
/* The inline implementation is private and may change without notice. */
return map->slots[i - 1];
}
 
/* Return the current value. You can only call it after you have
called objc_map_iterator_move_to_next() at least once (to move to
the first element), and only if the last call returned
OBJC_MAP_SUCCESS. The behaviour is otherwise undefined, probably a
segmentation fault. */
static inline
tree
objc_map_iterator_current_value (objc_map_t map, objc_map_iterator_t i)
{
/* The inline implementation is private and may change without notice. */
return map->values[i - 1];
}
 
#endif /* OBJC_MAP_H */

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.