/* CPP Library.
|
/* CPP Library.
|
Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
|
Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
|
1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008,
|
1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008,
|
2009, 2010, 2011 Free Software Foundation, Inc.
|
2009, 2010, 2011 Free Software Foundation, Inc.
|
Contributed by Per Bothner, 1994-95.
|
Contributed by Per Bothner, 1994-95.
|
Based on CCCP program by Paul Rubin, June 1986
|
Based on CCCP program by Paul Rubin, June 1986
|
Adapted to ANSI C, Richard Stallman, Jan 1987
|
Adapted to ANSI C, Richard Stallman, Jan 1987
|
|
|
This program is free software; you can redistribute it and/or modify it
|
This program is free software; you can redistribute it and/or modify it
|
under the terms of the GNU General Public License as published by the
|
under the terms of the GNU General Public License as published by the
|
Free Software Foundation; either version 3, or (at your option) any
|
Free Software Foundation; either version 3, or (at your option) any
|
later version.
|
later version.
|
|
|
This program is distributed in the hope that it will be useful,
|
This program is distributed in the hope that it will be useful,
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
GNU General Public License for more details.
|
GNU General Public License for more details.
|
|
|
You should have received a copy of the GNU General Public License
|
You should have received a copy of the GNU General Public License
|
along with this program; see the file COPYING3. If not see
|
along with this program; see the file COPYING3. If not see
|
<http://www.gnu.org/licenses/>. */
|
<http://www.gnu.org/licenses/>. */
|
|
|
#include "config.h"
|
#include "config.h"
|
#include "system.h"
|
#include "system.h"
|
#include "cpplib.h"
|
#include "cpplib.h"
|
#include "internal.h"
|
#include "internal.h"
|
#include "mkdeps.h"
|
#include "mkdeps.h"
|
#include "localedir.h"
|
#include "localedir.h"
|
#include "filenames.h"
|
#include "filenames.h"
|
|
|
static void init_library (void);
|
static void init_library (void);
|
static void mark_named_operators (cpp_reader *, int);
|
static void mark_named_operators (cpp_reader *, int);
|
static void read_original_filename (cpp_reader *);
|
static void read_original_filename (cpp_reader *);
|
static void read_original_directory (cpp_reader *);
|
static void read_original_directory (cpp_reader *);
|
static void post_options (cpp_reader *);
|
static void post_options (cpp_reader *);
|
|
|
/* If we have designated initializers (GCC >2.7) these tables can be
|
/* If we have designated initializers (GCC >2.7) these tables can be
|
initialized, constant data. Otherwise, they have to be filled in at
|
initialized, constant data. Otherwise, they have to be filled in at
|
runtime. */
|
runtime. */
|
#if HAVE_DESIGNATED_INITIALIZERS
|
#if HAVE_DESIGNATED_INITIALIZERS
|
|
|
#define init_trigraph_map() /* Nothing. */
|
#define init_trigraph_map() /* Nothing. */
|
#define TRIGRAPH_MAP \
|
#define TRIGRAPH_MAP \
|
__extension__ const uchar _cpp_trigraph_map[UCHAR_MAX + 1] = {
|
__extension__ const uchar _cpp_trigraph_map[UCHAR_MAX + 1] = {
|
|
|
#define END };
|
#define END };
|
#define s(p, v) [p] = v,
|
#define s(p, v) [p] = v,
|
|
|
#else
|
#else
|
|
|
#define TRIGRAPH_MAP uchar _cpp_trigraph_map[UCHAR_MAX + 1] = { 0 }; \
|
#define TRIGRAPH_MAP uchar _cpp_trigraph_map[UCHAR_MAX + 1] = { 0 }; \
|
static void init_trigraph_map (void) { \
|
static void init_trigraph_map (void) { \
|
unsigned char *x = _cpp_trigraph_map;
|
unsigned char *x = _cpp_trigraph_map;
|
|
|
#define END }
|
#define END }
|
#define s(p, v) x[p] = v;
|
#define s(p, v) x[p] = v;
|
|
|
#endif
|
#endif
|
|
|
TRIGRAPH_MAP
|
TRIGRAPH_MAP
|
s('=', '#') s(')', ']') s('!', '|')
|
s('=', '#') s(')', ']') s('!', '|')
|
s('(', '[') s('\'', '^') s('>', '}')
|
s('(', '[') s('\'', '^') s('>', '}')
|
s('/', '\\') s('<', '{') s('-', '~')
|
s('/', '\\') s('<', '{') s('-', '~')
|
END
|
END
|
|
|
#undef s
|
#undef s
|
#undef END
|
#undef END
|
#undef TRIGRAPH_MAP
|
#undef TRIGRAPH_MAP
|
|
|
/* A set of booleans indicating what CPP features each source language
|
/* A set of booleans indicating what CPP features each source language
|
requires. */
|
requires. */
|
struct lang_flags
|
struct lang_flags
|
{
|
{
|
char c99;
|
char c99;
|
char cplusplus;
|
char cplusplus;
|
char extended_numbers;
|
char extended_numbers;
|
char extended_identifiers;
|
char extended_identifiers;
|
char std;
|
char std;
|
char cplusplus_comments;
|
char cplusplus_comments;
|
char digraphs;
|
char digraphs;
|
char uliterals;
|
char uliterals;
|
char rliterals;
|
char rliterals;
|
char user_literals;
|
char user_literals;
|
};
|
};
|
|
|
static const struct lang_flags lang_defaults[] =
|
static const struct lang_flags lang_defaults[] =
|
{ /* c99 c++ xnum xid std // digr ulit rlit user_literals */
|
{ /* c99 c++ xnum xid std // digr ulit rlit user_literals */
|
/* GNUC89 */ { 0, 0, 1, 0, 0, 1, 1, 0, 0, 0 },
|
/* GNUC89 */ { 0, 0, 1, 0, 0, 1, 1, 0, 0, 0 },
|
/* GNUC99 */ { 1, 0, 1, 0, 0, 1, 1, 1, 1, 0 },
|
/* GNUC99 */ { 1, 0, 1, 0, 0, 1, 1, 1, 1, 0 },
|
/* GNUC11 */ { 1, 0, 1, 0, 0, 1, 1, 1, 1, 0 },
|
/* GNUC11 */ { 1, 0, 1, 0, 0, 1, 1, 1, 1, 0 },
|
/* STDC89 */ { 0, 0, 0, 0, 1, 0, 0, 0, 0, 0 },
|
/* STDC89 */ { 0, 0, 0, 0, 1, 0, 0, 0, 0, 0 },
|
/* STDC94 */ { 0, 0, 0, 0, 1, 0, 1, 0, 0, 0 },
|
/* STDC94 */ { 0, 0, 0, 0, 1, 0, 1, 0, 0, 0 },
|
/* STDC99 */ { 1, 0, 1, 0, 1, 1, 1, 0, 0, 0 },
|
/* STDC99 */ { 1, 0, 1, 0, 1, 1, 1, 0, 0, 0 },
|
/* STDC11 */ { 1, 0, 1, 0, 1, 1, 1, 1, 0, 0 },
|
/* STDC11 */ { 1, 0, 1, 0, 1, 1, 1, 1, 0, 0 },
|
/* GNUCXX */ { 0, 1, 1, 0, 0, 1, 1, 0, 0, 0 },
|
/* GNUCXX */ { 0, 1, 1, 0, 0, 1, 1, 0, 0, 0 },
|
/* CXX98 */ { 0, 1, 1, 0, 1, 1, 1, 0, 0, 0 },
|
/* CXX98 */ { 0, 1, 1, 0, 1, 1, 1, 0, 0, 0 },
|
/* GNUCXX11 */ { 1, 1, 1, 0, 0, 1, 1, 1, 1, 1 },
|
/* GNUCXX11 */ { 1, 1, 1, 0, 0, 1, 1, 1, 1, 1 },
|
/* CXX11 */ { 1, 1, 1, 0, 1, 1, 1, 1, 1, 1 },
|
/* CXX11 */ { 1, 1, 1, 0, 1, 1, 1, 1, 1, 1 },
|
/* ASM */ { 0, 0, 1, 0, 0, 1, 0, 0, 0, 0 }
|
/* ASM */ { 0, 0, 1, 0, 0, 1, 0, 0, 0, 0 }
|
/* xid should be 1 for GNUC99, STDC99, GNUCXX, CXX98, GNUCXX11, and
|
/* xid should be 1 for GNUC99, STDC99, GNUCXX, CXX98, GNUCXX11, and
|
CXX11 when no longer experimental (when all uses of identifiers
|
CXX11 when no longer experimental (when all uses of identifiers
|
in the compiler have been audited for correct handling of
|
in the compiler have been audited for correct handling of
|
extended identifiers). */
|
extended identifiers). */
|
};
|
};
|
|
|
/* Sets internal flags correctly for a given language. */
|
/* Sets internal flags correctly for a given language. */
|
void
|
void
|
cpp_set_lang (cpp_reader *pfile, enum c_lang lang)
|
cpp_set_lang (cpp_reader *pfile, enum c_lang lang)
|
{
|
{
|
const struct lang_flags *l = &lang_defaults[(int) lang];
|
const struct lang_flags *l = &lang_defaults[(int) lang];
|
|
|
CPP_OPTION (pfile, lang) = lang;
|
CPP_OPTION (pfile, lang) = lang;
|
|
|
CPP_OPTION (pfile, c99) = l->c99;
|
CPP_OPTION (pfile, c99) = l->c99;
|
CPP_OPTION (pfile, cplusplus) = l->cplusplus;
|
CPP_OPTION (pfile, cplusplus) = l->cplusplus;
|
CPP_OPTION (pfile, extended_numbers) = l->extended_numbers;
|
CPP_OPTION (pfile, extended_numbers) = l->extended_numbers;
|
CPP_OPTION (pfile, extended_identifiers) = l->extended_identifiers;
|
CPP_OPTION (pfile, extended_identifiers) = l->extended_identifiers;
|
CPP_OPTION (pfile, std) = l->std;
|
CPP_OPTION (pfile, std) = l->std;
|
CPP_OPTION (pfile, trigraphs) = l->std;
|
CPP_OPTION (pfile, trigraphs) = l->std;
|
CPP_OPTION (pfile, cplusplus_comments) = l->cplusplus_comments;
|
CPP_OPTION (pfile, cplusplus_comments) = l->cplusplus_comments;
|
CPP_OPTION (pfile, digraphs) = l->digraphs;
|
CPP_OPTION (pfile, digraphs) = l->digraphs;
|
CPP_OPTION (pfile, uliterals) = l->uliterals;
|
CPP_OPTION (pfile, uliterals) = l->uliterals;
|
CPP_OPTION (pfile, rliterals) = l->rliterals;
|
CPP_OPTION (pfile, rliterals) = l->rliterals;
|
CPP_OPTION (pfile, user_literals) = l->user_literals;
|
CPP_OPTION (pfile, user_literals) = l->user_literals;
|
}
|
}
|
|
|
/* Initialize library global state. */
|
/* Initialize library global state. */
|
static void
|
static void
|
init_library (void)
|
init_library (void)
|
{
|
{
|
static int initialized = 0;
|
static int initialized = 0;
|
|
|
if (! initialized)
|
if (! initialized)
|
{
|
{
|
initialized = 1;
|
initialized = 1;
|
|
|
_cpp_init_lexer ();
|
_cpp_init_lexer ();
|
|
|
/* Set up the trigraph map. This doesn't need to do anything if
|
/* Set up the trigraph map. This doesn't need to do anything if
|
we were compiled with a compiler that supports C99 designated
|
we were compiled with a compiler that supports C99 designated
|
initializers. */
|
initializers. */
|
init_trigraph_map ();
|
init_trigraph_map ();
|
|
|
#ifdef ENABLE_NLS
|
#ifdef ENABLE_NLS
|
(void) bindtextdomain (PACKAGE, LOCALEDIR);
|
(void) bindtextdomain (PACKAGE, LOCALEDIR);
|
#endif
|
#endif
|
}
|
}
|
}
|
}
|
|
|
/* Initialize a cpp_reader structure. */
|
/* Initialize a cpp_reader structure. */
|
cpp_reader *
|
cpp_reader *
|
cpp_create_reader (enum c_lang lang, hash_table *table,
|
cpp_create_reader (enum c_lang lang, hash_table *table,
|
struct line_maps *line_table)
|
struct line_maps *line_table)
|
{
|
{
|
cpp_reader *pfile;
|
cpp_reader *pfile;
|
|
|
/* Initialize this instance of the library if it hasn't been already. */
|
/* Initialize this instance of the library if it hasn't been already. */
|
init_library ();
|
init_library ();
|
|
|
pfile = XCNEW (cpp_reader);
|
pfile = XCNEW (cpp_reader);
|
memset (&pfile->base_context, 0, sizeof (pfile->base_context));
|
memset (&pfile->base_context, 0, sizeof (pfile->base_context));
|
|
|
cpp_set_lang (pfile, lang);
|
cpp_set_lang (pfile, lang);
|
CPP_OPTION (pfile, warn_multichar) = 1;
|
CPP_OPTION (pfile, warn_multichar) = 1;
|
CPP_OPTION (pfile, discard_comments) = 1;
|
CPP_OPTION (pfile, discard_comments) = 1;
|
CPP_OPTION (pfile, discard_comments_in_macro_exp) = 1;
|
CPP_OPTION (pfile, discard_comments_in_macro_exp) = 1;
|
CPP_OPTION (pfile, tabstop) = 8;
|
CPP_OPTION (pfile, tabstop) = 8;
|
CPP_OPTION (pfile, operator_names) = 1;
|
CPP_OPTION (pfile, operator_names) = 1;
|
CPP_OPTION (pfile, warn_trigraphs) = 2;
|
CPP_OPTION (pfile, warn_trigraphs) = 2;
|
CPP_OPTION (pfile, warn_endif_labels) = 1;
|
CPP_OPTION (pfile, warn_endif_labels) = 1;
|
CPP_OPTION (pfile, cpp_warn_deprecated) = 1;
|
CPP_OPTION (pfile, cpp_warn_deprecated) = 1;
|
CPP_OPTION (pfile, cpp_warn_long_long) = 0;
|
CPP_OPTION (pfile, cpp_warn_long_long) = 0;
|
CPP_OPTION (pfile, dollars_in_ident) = 1;
|
CPP_OPTION (pfile, dollars_in_ident) = 1;
|
CPP_OPTION (pfile, warn_dollars) = 1;
|
CPP_OPTION (pfile, warn_dollars) = 1;
|
CPP_OPTION (pfile, warn_variadic_macros) = 1;
|
CPP_OPTION (pfile, warn_variadic_macros) = 1;
|
CPP_OPTION (pfile, warn_builtin_macro_redefined) = 1;
|
CPP_OPTION (pfile, warn_builtin_macro_redefined) = 1;
|
CPP_OPTION (pfile, warn_normalize) = normalized_C;
|
CPP_OPTION (pfile, warn_normalize) = normalized_C;
|
|
|
/* Default CPP arithmetic to something sensible for the host for the
|
/* Default CPP arithmetic to something sensible for the host for the
|
benefit of dumb users like fix-header. */
|
benefit of dumb users like fix-header. */
|
CPP_OPTION (pfile, precision) = CHAR_BIT * sizeof (long);
|
CPP_OPTION (pfile, precision) = CHAR_BIT * sizeof (long);
|
CPP_OPTION (pfile, char_precision) = CHAR_BIT;
|
CPP_OPTION (pfile, char_precision) = CHAR_BIT;
|
CPP_OPTION (pfile, wchar_precision) = CHAR_BIT * sizeof (int);
|
CPP_OPTION (pfile, wchar_precision) = CHAR_BIT * sizeof (int);
|
CPP_OPTION (pfile, int_precision) = CHAR_BIT * sizeof (int);
|
CPP_OPTION (pfile, int_precision) = CHAR_BIT * sizeof (int);
|
CPP_OPTION (pfile, unsigned_char) = 0;
|
CPP_OPTION (pfile, unsigned_char) = 0;
|
CPP_OPTION (pfile, unsigned_wchar) = 1;
|
CPP_OPTION (pfile, unsigned_wchar) = 1;
|
CPP_OPTION (pfile, bytes_big_endian) = 1; /* does not matter */
|
CPP_OPTION (pfile, bytes_big_endian) = 1; /* does not matter */
|
|
|
/* Default to no charset conversion. */
|
/* Default to no charset conversion. */
|
CPP_OPTION (pfile, narrow_charset) = _cpp_default_encoding ();
|
CPP_OPTION (pfile, narrow_charset) = _cpp_default_encoding ();
|
CPP_OPTION (pfile, wide_charset) = 0;
|
CPP_OPTION (pfile, wide_charset) = 0;
|
|
|
/* Default the input character set to UTF-8. */
|
/* Default the input character set to UTF-8. */
|
CPP_OPTION (pfile, input_charset) = _cpp_default_encoding ();
|
CPP_OPTION (pfile, input_charset) = _cpp_default_encoding ();
|
|
|
/* A fake empty "directory" used as the starting point for files
|
/* A fake empty "directory" used as the starting point for files
|
looked up without a search path. Name cannot be '/' because we
|
looked up without a search path. Name cannot be '/' because we
|
don't want to prepend anything at all to filenames using it. All
|
don't want to prepend anything at all to filenames using it. All
|
other entries are correct zero-initialized. */
|
other entries are correct zero-initialized. */
|
pfile->no_search_path.name = (char *) "";
|
pfile->no_search_path.name = (char *) "";
|
|
|
/* Initialize the line map. */
|
/* Initialize the line map. */
|
pfile->line_table = line_table;
|
pfile->line_table = line_table;
|
|
|
/* Initialize lexer state. */
|
/* Initialize lexer state. */
|
pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments);
|
pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments);
|
|
|
/* Set up static tokens. */
|
/* Set up static tokens. */
|
pfile->avoid_paste.type = CPP_PADDING;
|
pfile->avoid_paste.type = CPP_PADDING;
|
pfile->avoid_paste.val.source = NULL;
|
pfile->avoid_paste.val.source = NULL;
|
pfile->eof.type = CPP_EOF;
|
pfile->eof.type = CPP_EOF;
|
pfile->eof.flags = 0;
|
pfile->eof.flags = 0;
|
|
|
/* Create a token buffer for the lexer. */
|
/* Create a token buffer for the lexer. */
|
_cpp_init_tokenrun (&pfile->base_run, 250);
|
_cpp_init_tokenrun (&pfile->base_run, 250);
|
pfile->cur_run = &pfile->base_run;
|
pfile->cur_run = &pfile->base_run;
|
pfile->cur_token = pfile->base_run.base;
|
pfile->cur_token = pfile->base_run.base;
|
|
|
/* Initialize the base context. */
|
/* Initialize the base context. */
|
pfile->context = &pfile->base_context;
|
pfile->context = &pfile->base_context;
|
pfile->base_context.c.macro = 0;
|
pfile->base_context.c.macro = 0;
|
pfile->base_context.prev = pfile->base_context.next = 0;
|
pfile->base_context.prev = pfile->base_context.next = 0;
|
|
|
/* Aligned and unaligned storage. */
|
/* Aligned and unaligned storage. */
|
pfile->a_buff = _cpp_get_buff (pfile, 0);
|
pfile->a_buff = _cpp_get_buff (pfile, 0);
|
pfile->u_buff = _cpp_get_buff (pfile, 0);
|
pfile->u_buff = _cpp_get_buff (pfile, 0);
|
|
|
/* Initialize table for push_macro/pop_macro. */
|
/* Initialize table for push_macro/pop_macro. */
|
pfile->pushed_macros = 0;
|
pfile->pushed_macros = 0;
|
|
|
/* Do not force token locations by default. */
|
/* Do not force token locations by default. */
|
pfile->forced_token_location_p = NULL;
|
pfile->forced_token_location_p = NULL;
|
|
|
/* The expression parser stack. */
|
/* The expression parser stack. */
|
_cpp_expand_op_stack (pfile);
|
_cpp_expand_op_stack (pfile);
|
|
|
/* Initialize the buffer obstack. */
|
/* Initialize the buffer obstack. */
|
_obstack_begin (&pfile->buffer_ob, 0, 0,
|
_obstack_begin (&pfile->buffer_ob, 0, 0,
|
(void *(*) (long)) xmalloc,
|
(void *(*) (long)) xmalloc,
|
(void (*) (void *)) free);
|
(void (*) (void *)) free);
|
|
|
_cpp_init_files (pfile);
|
_cpp_init_files (pfile);
|
|
|
_cpp_init_hashtable (pfile, table);
|
_cpp_init_hashtable (pfile, table);
|
|
|
return pfile;
|
return pfile;
|
}
|
}
|
|
|
/* Set the line_table entry in PFILE. This is called after reading a
|
/* Set the line_table entry in PFILE. This is called after reading a
|
PCH file, as the old line_table will be incorrect. */
|
PCH file, as the old line_table will be incorrect. */
|
void
|
void
|
cpp_set_line_map (cpp_reader *pfile, struct line_maps *line_table)
|
cpp_set_line_map (cpp_reader *pfile, struct line_maps *line_table)
|
{
|
{
|
pfile->line_table = line_table;
|
pfile->line_table = line_table;
|
}
|
}
|
|
|
/* Free resources used by PFILE. Accessing PFILE after this function
|
/* Free resources used by PFILE. Accessing PFILE after this function
|
returns leads to undefined behavior. Returns the error count. */
|
returns leads to undefined behavior. Returns the error count. */
|
void
|
void
|
cpp_destroy (cpp_reader *pfile)
|
cpp_destroy (cpp_reader *pfile)
|
{
|
{
|
cpp_context *context, *contextn;
|
cpp_context *context, *contextn;
|
struct def_pragma_macro *pmacro;
|
struct def_pragma_macro *pmacro;
|
tokenrun *run, *runn;
|
tokenrun *run, *runn;
|
int i;
|
int i;
|
|
|
free (pfile->op_stack);
|
free (pfile->op_stack);
|
|
|
while (CPP_BUFFER (pfile) != NULL)
|
while (CPP_BUFFER (pfile) != NULL)
|
_cpp_pop_buffer (pfile);
|
_cpp_pop_buffer (pfile);
|
|
|
free (pfile->out.base);
|
free (pfile->out.base);
|
|
|
if (pfile->macro_buffer)
|
if (pfile->macro_buffer)
|
{
|
{
|
free (pfile->macro_buffer);
|
free (pfile->macro_buffer);
|
pfile->macro_buffer = NULL;
|
pfile->macro_buffer = NULL;
|
pfile->macro_buffer_len = 0;
|
pfile->macro_buffer_len = 0;
|
}
|
}
|
|
|
if (pfile->deps)
|
if (pfile->deps)
|
deps_free (pfile->deps);
|
deps_free (pfile->deps);
|
obstack_free (&pfile->buffer_ob, 0);
|
obstack_free (&pfile->buffer_ob, 0);
|
|
|
_cpp_destroy_hashtable (pfile);
|
_cpp_destroy_hashtable (pfile);
|
_cpp_cleanup_files (pfile);
|
_cpp_cleanup_files (pfile);
|
_cpp_destroy_iconv (pfile);
|
_cpp_destroy_iconv (pfile);
|
|
|
_cpp_free_buff (pfile->a_buff);
|
_cpp_free_buff (pfile->a_buff);
|
_cpp_free_buff (pfile->u_buff);
|
_cpp_free_buff (pfile->u_buff);
|
_cpp_free_buff (pfile->free_buffs);
|
_cpp_free_buff (pfile->free_buffs);
|
|
|
for (run = &pfile->base_run; run; run = runn)
|
for (run = &pfile->base_run; run; run = runn)
|
{
|
{
|
runn = run->next;
|
runn = run->next;
|
free (run->base);
|
free (run->base);
|
if (run != &pfile->base_run)
|
if (run != &pfile->base_run)
|
free (run);
|
free (run);
|
}
|
}
|
|
|
for (context = pfile->base_context.next; context; context = contextn)
|
for (context = pfile->base_context.next; context; context = contextn)
|
{
|
{
|
contextn = context->next;
|
contextn = context->next;
|
free (context);
|
free (context);
|
}
|
}
|
|
|
if (pfile->comments.entries)
|
if (pfile->comments.entries)
|
{
|
{
|
for (i = 0; i < pfile->comments.count; i++)
|
for (i = 0; i < pfile->comments.count; i++)
|
free (pfile->comments.entries[i].comment);
|
free (pfile->comments.entries[i].comment);
|
|
|
free (pfile->comments.entries);
|
free (pfile->comments.entries);
|
}
|
}
|
if (pfile->pushed_macros)
|
if (pfile->pushed_macros)
|
{
|
{
|
do
|
do
|
{
|
{
|
pmacro = pfile->pushed_macros;
|
pmacro = pfile->pushed_macros;
|
pfile->pushed_macros = pmacro->next;
|
pfile->pushed_macros = pmacro->next;
|
free (pmacro->name);
|
free (pmacro->name);
|
free (pmacro);
|
free (pmacro);
|
}
|
}
|
while (pfile->pushed_macros);
|
while (pfile->pushed_macros);
|
}
|
}
|
|
|
free (pfile);
|
free (pfile);
|
}
|
}
|
|
|
/* This structure defines one built-in identifier. A node will be
|
/* This structure defines one built-in identifier. A node will be
|
entered in the hash table under the name NAME, with value VALUE.
|
entered in the hash table under the name NAME, with value VALUE.
|
|
|
There are two tables of these. builtin_array holds all the
|
There are two tables of these. builtin_array holds all the
|
"builtin" macros: these are handled by builtin_macro() in
|
"builtin" macros: these are handled by builtin_macro() in
|
macro.c. Builtin is somewhat of a misnomer -- the property of
|
macro.c. Builtin is somewhat of a misnomer -- the property of
|
interest is that these macros require special code to compute their
|
interest is that these macros require special code to compute their
|
expansions. The value is a "cpp_builtin_type" enumerator.
|
expansions. The value is a "cpp_builtin_type" enumerator.
|
|
|
operator_array holds the C++ named operators. These are keywords
|
operator_array holds the C++ named operators. These are keywords
|
which act as aliases for punctuators. In C++, they cannot be
|
which act as aliases for punctuators. In C++, they cannot be
|
altered through #define, and #if recognizes them as operators. In
|
altered through #define, and #if recognizes them as operators. In
|
C, these are not entered into the hash table at all (but see
|
C, these are not entered into the hash table at all (but see
|
<iso646.h>). The value is a token-type enumerator. */
|
<iso646.h>). The value is a token-type enumerator. */
|
struct builtin_macro
|
struct builtin_macro
|
{
|
{
|
const uchar *const name;
|
const uchar *const name;
|
const unsigned short len;
|
const unsigned short len;
|
const unsigned short value;
|
const unsigned short value;
|
const bool always_warn_if_redefined;
|
const bool always_warn_if_redefined;
|
};
|
};
|
|
|
#define B(n, t, f) { DSC(n), t, f }
|
#define B(n, t, f) { DSC(n), t, f }
|
static const struct builtin_macro builtin_array[] =
|
static const struct builtin_macro builtin_array[] =
|
{
|
{
|
B("__TIMESTAMP__", BT_TIMESTAMP, false),
|
B("__TIMESTAMP__", BT_TIMESTAMP, false),
|
B("__TIME__", BT_TIME, false),
|
B("__TIME__", BT_TIME, false),
|
B("__DATE__", BT_DATE, false),
|
B("__DATE__", BT_DATE, false),
|
B("__FILE__", BT_FILE, false),
|
B("__FILE__", BT_FILE, false),
|
B("__BASE_FILE__", BT_BASE_FILE, false),
|
B("__BASE_FILE__", BT_BASE_FILE, false),
|
B("__LINE__", BT_SPECLINE, true),
|
B("__LINE__", BT_SPECLINE, true),
|
B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL, true),
|
B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL, true),
|
B("__COUNTER__", BT_COUNTER, true),
|
B("__COUNTER__", BT_COUNTER, true),
|
/* Keep builtins not used for -traditional-cpp at the end, and
|
/* Keep builtins not used for -traditional-cpp at the end, and
|
update init_builtins() if any more are added. */
|
update init_builtins() if any more are added. */
|
B("_Pragma", BT_PRAGMA, true),
|
B("_Pragma", BT_PRAGMA, true),
|
B("__STDC__", BT_STDC, true),
|
B("__STDC__", BT_STDC, true),
|
};
|
};
|
#undef B
|
#undef B
|
|
|
struct builtin_operator
|
struct builtin_operator
|
{
|
{
|
const uchar *const name;
|
const uchar *const name;
|
const unsigned short len;
|
const unsigned short len;
|
const unsigned short value;
|
const unsigned short value;
|
};
|
};
|
|
|
#define B(n, t) { DSC(n), t }
|
#define B(n, t) { DSC(n), t }
|
static const struct builtin_operator operator_array[] =
|
static const struct builtin_operator operator_array[] =
|
{
|
{
|
B("and", CPP_AND_AND),
|
B("and", CPP_AND_AND),
|
B("and_eq", CPP_AND_EQ),
|
B("and_eq", CPP_AND_EQ),
|
B("bitand", CPP_AND),
|
B("bitand", CPP_AND),
|
B("bitor", CPP_OR),
|
B("bitor", CPP_OR),
|
B("compl", CPP_COMPL),
|
B("compl", CPP_COMPL),
|
B("not", CPP_NOT),
|
B("not", CPP_NOT),
|
B("not_eq", CPP_NOT_EQ),
|
B("not_eq", CPP_NOT_EQ),
|
B("or", CPP_OR_OR),
|
B("or", CPP_OR_OR),
|
B("or_eq", CPP_OR_EQ),
|
B("or_eq", CPP_OR_EQ),
|
B("xor", CPP_XOR),
|
B("xor", CPP_XOR),
|
B("xor_eq", CPP_XOR_EQ)
|
B("xor_eq", CPP_XOR_EQ)
|
};
|
};
|
#undef B
|
#undef B
|
|
|
/* Mark the C++ named operators in the hash table. */
|
/* Mark the C++ named operators in the hash table. */
|
static void
|
static void
|
mark_named_operators (cpp_reader *pfile, int flags)
|
mark_named_operators (cpp_reader *pfile, int flags)
|
{
|
{
|
const struct builtin_operator *b;
|
const struct builtin_operator *b;
|
|
|
for (b = operator_array;
|
for (b = operator_array;
|
b < (operator_array + ARRAY_SIZE (operator_array));
|
b < (operator_array + ARRAY_SIZE (operator_array));
|
b++)
|
b++)
|
{
|
{
|
cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len);
|
cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len);
|
hp->flags |= flags;
|
hp->flags |= flags;
|
hp->is_directive = 0;
|
hp->is_directive = 0;
|
hp->directive_index = b->value;
|
hp->directive_index = b->value;
|
}
|
}
|
}
|
}
|
|
|
/* Helper function of cpp_type2name. Return the string associated with
|
/* Helper function of cpp_type2name. Return the string associated with
|
named operator TYPE. */
|
named operator TYPE. */
|
const char *
|
const char *
|
cpp_named_operator2name (enum cpp_ttype type)
|
cpp_named_operator2name (enum cpp_ttype type)
|
{
|
{
|
const struct builtin_operator *b;
|
const struct builtin_operator *b;
|
|
|
for (b = operator_array;
|
for (b = operator_array;
|
b < (operator_array + ARRAY_SIZE (operator_array));
|
b < (operator_array + ARRAY_SIZE (operator_array));
|
b++)
|
b++)
|
{
|
{
|
if (type == b->value)
|
if (type == b->value)
|
return (const char *) b->name;
|
return (const char *) b->name;
|
}
|
}
|
|
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
void
|
void
|
cpp_init_special_builtins (cpp_reader *pfile)
|
cpp_init_special_builtins (cpp_reader *pfile)
|
{
|
{
|
const struct builtin_macro *b;
|
const struct builtin_macro *b;
|
size_t n = ARRAY_SIZE (builtin_array);
|
size_t n = ARRAY_SIZE (builtin_array);
|
|
|
if (CPP_OPTION (pfile, traditional))
|
if (CPP_OPTION (pfile, traditional))
|
n -= 2;
|
n -= 2;
|
else if (! CPP_OPTION (pfile, stdc_0_in_system_headers)
|
else if (! CPP_OPTION (pfile, stdc_0_in_system_headers)
|
|| CPP_OPTION (pfile, std))
|
|| CPP_OPTION (pfile, std))
|
n--;
|
n--;
|
|
|
for (b = builtin_array; b < builtin_array + n; b++)
|
for (b = builtin_array; b < builtin_array + n; b++)
|
{
|
{
|
cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len);
|
cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len);
|
hp->type = NT_MACRO;
|
hp->type = NT_MACRO;
|
hp->flags |= NODE_BUILTIN;
|
hp->flags |= NODE_BUILTIN;
|
if (b->always_warn_if_redefined
|
if (b->always_warn_if_redefined
|
|| CPP_OPTION (pfile, warn_builtin_macro_redefined))
|
|| CPP_OPTION (pfile, warn_builtin_macro_redefined))
|
hp->flags |= NODE_WARN;
|
hp->flags |= NODE_WARN;
|
hp->value.builtin = (enum cpp_builtin_type) b->value;
|
hp->value.builtin = (enum cpp_builtin_type) b->value;
|
}
|
}
|
}
|
}
|
|
|
/* Read the builtins table above and enter them, and language-specific
|
/* Read the builtins table above and enter them, and language-specific
|
macros, into the hash table. HOSTED is true if this is a hosted
|
macros, into the hash table. HOSTED is true if this is a hosted
|
environment. */
|
environment. */
|
void
|
void
|
cpp_init_builtins (cpp_reader *pfile, int hosted)
|
cpp_init_builtins (cpp_reader *pfile, int hosted)
|
{
|
{
|
cpp_init_special_builtins (pfile);
|
cpp_init_special_builtins (pfile);
|
|
|
if (!CPP_OPTION (pfile, traditional)
|
if (!CPP_OPTION (pfile, traditional)
|
&& (! CPP_OPTION (pfile, stdc_0_in_system_headers)
|
&& (! CPP_OPTION (pfile, stdc_0_in_system_headers)
|
|| CPP_OPTION (pfile, std)))
|
|| CPP_OPTION (pfile, std)))
|
_cpp_define_builtin (pfile, "__STDC__ 1");
|
_cpp_define_builtin (pfile, "__STDC__ 1");
|
|
|
if (CPP_OPTION (pfile, cplusplus))
|
if (CPP_OPTION (pfile, cplusplus))
|
{
|
{
|
if (CPP_OPTION (pfile, lang) == CLK_CXX11
|
if (CPP_OPTION (pfile, lang) == CLK_CXX11
|
|| CPP_OPTION (pfile, lang) == CLK_GNUCXX11)
|
|| CPP_OPTION (pfile, lang) == CLK_GNUCXX11)
|
_cpp_define_builtin (pfile, "__cplusplus 201103L");
|
_cpp_define_builtin (pfile, "__cplusplus 201103L");
|
else
|
else
|
_cpp_define_builtin (pfile, "__cplusplus 199711L");
|
_cpp_define_builtin (pfile, "__cplusplus 199711L");
|
}
|
}
|
else if (CPP_OPTION (pfile, lang) == CLK_ASM)
|
else if (CPP_OPTION (pfile, lang) == CLK_ASM)
|
_cpp_define_builtin (pfile, "__ASSEMBLER__ 1");
|
_cpp_define_builtin (pfile, "__ASSEMBLER__ 1");
|
else if (CPP_OPTION (pfile, lang) == CLK_STDC94)
|
else if (CPP_OPTION (pfile, lang) == CLK_STDC94)
|
_cpp_define_builtin (pfile, "__STDC_VERSION__ 199409L");
|
_cpp_define_builtin (pfile, "__STDC_VERSION__ 199409L");
|
else if (CPP_OPTION (pfile, lang) == CLK_STDC11
|
else if (CPP_OPTION (pfile, lang) == CLK_STDC11
|
|| CPP_OPTION (pfile, lang) == CLK_GNUC11)
|
|| CPP_OPTION (pfile, lang) == CLK_GNUC11)
|
_cpp_define_builtin (pfile, "__STDC_VERSION__ 201112L");
|
_cpp_define_builtin (pfile, "__STDC_VERSION__ 201112L");
|
else if (CPP_OPTION (pfile, c99))
|
else if (CPP_OPTION (pfile, c99))
|
_cpp_define_builtin (pfile, "__STDC_VERSION__ 199901L");
|
_cpp_define_builtin (pfile, "__STDC_VERSION__ 199901L");
|
|
|
if (CPP_OPTION (pfile, uliterals)
|
if (CPP_OPTION (pfile, uliterals)
|
&& !CPP_OPTION (pfile, cplusplus))
|
&& !CPP_OPTION (pfile, cplusplus))
|
{
|
{
|
_cpp_define_builtin (pfile, "__STDC_UTF_16__ 1");
|
_cpp_define_builtin (pfile, "__STDC_UTF_16__ 1");
|
_cpp_define_builtin (pfile, "__STDC_UTF_32__ 1");
|
_cpp_define_builtin (pfile, "__STDC_UTF_32__ 1");
|
}
|
}
|
|
|
if (hosted)
|
if (hosted)
|
_cpp_define_builtin (pfile, "__STDC_HOSTED__ 1");
|
_cpp_define_builtin (pfile, "__STDC_HOSTED__ 1");
|
else
|
else
|
_cpp_define_builtin (pfile, "__STDC_HOSTED__ 0");
|
_cpp_define_builtin (pfile, "__STDC_HOSTED__ 0");
|
|
|
if (CPP_OPTION (pfile, objc))
|
if (CPP_OPTION (pfile, objc))
|
_cpp_define_builtin (pfile, "__OBJC__ 1");
|
_cpp_define_builtin (pfile, "__OBJC__ 1");
|
}
|
}
|
|
|
/* Sanity-checks are dependent on command-line options, so it is
|
/* Sanity-checks are dependent on command-line options, so it is
|
called as a subroutine of cpp_read_main_file (). */
|
called as a subroutine of cpp_read_main_file (). */
|
#if ENABLE_CHECKING
|
#if ENABLE_CHECKING
|
static void sanity_checks (cpp_reader *);
|
static void sanity_checks (cpp_reader *);
|
static void sanity_checks (cpp_reader *pfile)
|
static void sanity_checks (cpp_reader *pfile)
|
{
|
{
|
cppchar_t test = 0;
|
cppchar_t test = 0;
|
size_t max_precision = 2 * CHAR_BIT * sizeof (cpp_num_part);
|
size_t max_precision = 2 * CHAR_BIT * sizeof (cpp_num_part);
|
|
|
/* Sanity checks for assumptions about CPP arithmetic and target
|
/* Sanity checks for assumptions about CPP arithmetic and target
|
type precisions made by cpplib. */
|
type precisions made by cpplib. */
|
test--;
|
test--;
|
if (test < 1)
|
if (test < 1)
|
cpp_error (pfile, CPP_DL_ICE, "cppchar_t must be an unsigned type");
|
cpp_error (pfile, CPP_DL_ICE, "cppchar_t must be an unsigned type");
|
|
|
if (CPP_OPTION (pfile, precision) > max_precision)
|
if (CPP_OPTION (pfile, precision) > max_precision)
|
cpp_error (pfile, CPP_DL_ICE,
|
cpp_error (pfile, CPP_DL_ICE,
|
"preprocessor arithmetic has maximum precision of %lu bits;"
|
"preprocessor arithmetic has maximum precision of %lu bits;"
|
" target requires %lu bits",
|
" target requires %lu bits",
|
(unsigned long) max_precision,
|
(unsigned long) max_precision,
|
(unsigned long) CPP_OPTION (pfile, precision));
|
(unsigned long) CPP_OPTION (pfile, precision));
|
|
|
if (CPP_OPTION (pfile, precision) < CPP_OPTION (pfile, int_precision))
|
if (CPP_OPTION (pfile, precision) < CPP_OPTION (pfile, int_precision))
|
cpp_error (pfile, CPP_DL_ICE,
|
cpp_error (pfile, CPP_DL_ICE,
|
"CPP arithmetic must be at least as precise as a target int");
|
"CPP arithmetic must be at least as precise as a target int");
|
|
|
if (CPP_OPTION (pfile, char_precision) < 8)
|
if (CPP_OPTION (pfile, char_precision) < 8)
|
cpp_error (pfile, CPP_DL_ICE, "target char is less than 8 bits wide");
|
cpp_error (pfile, CPP_DL_ICE, "target char is less than 8 bits wide");
|
|
|
if (CPP_OPTION (pfile, wchar_precision) < CPP_OPTION (pfile, char_precision))
|
if (CPP_OPTION (pfile, wchar_precision) < CPP_OPTION (pfile, char_precision))
|
cpp_error (pfile, CPP_DL_ICE,
|
cpp_error (pfile, CPP_DL_ICE,
|
"target wchar_t is narrower than target char");
|
"target wchar_t is narrower than target char");
|
|
|
if (CPP_OPTION (pfile, int_precision) < CPP_OPTION (pfile, char_precision))
|
if (CPP_OPTION (pfile, int_precision) < CPP_OPTION (pfile, char_precision))
|
cpp_error (pfile, CPP_DL_ICE,
|
cpp_error (pfile, CPP_DL_ICE,
|
"target int is narrower than target char");
|
"target int is narrower than target char");
|
|
|
/* This is assumed in eval_token() and could be fixed if necessary. */
|
/* This is assumed in eval_token() and could be fixed if necessary. */
|
if (sizeof (cppchar_t) > sizeof (cpp_num_part))
|
if (sizeof (cppchar_t) > sizeof (cpp_num_part))
|
cpp_error (pfile, CPP_DL_ICE,
|
cpp_error (pfile, CPP_DL_ICE,
|
"CPP half-integer narrower than CPP character");
|
"CPP half-integer narrower than CPP character");
|
|
|
if (CPP_OPTION (pfile, wchar_precision) > BITS_PER_CPPCHAR_T)
|
if (CPP_OPTION (pfile, wchar_precision) > BITS_PER_CPPCHAR_T)
|
cpp_error (pfile, CPP_DL_ICE,
|
cpp_error (pfile, CPP_DL_ICE,
|
"CPP on this host cannot handle wide character constants over"
|
"CPP on this host cannot handle wide character constants over"
|
" %lu bits, but the target requires %lu bits",
|
" %lu bits, but the target requires %lu bits",
|
(unsigned long) BITS_PER_CPPCHAR_T,
|
(unsigned long) BITS_PER_CPPCHAR_T,
|
(unsigned long) CPP_OPTION (pfile, wchar_precision));
|
(unsigned long) CPP_OPTION (pfile, wchar_precision));
|
}
|
}
|
#else
|
#else
|
# define sanity_checks(PFILE)
|
# define sanity_checks(PFILE)
|
#endif
|
#endif
|
|
|
/* This is called after options have been parsed, and partially
|
/* This is called after options have been parsed, and partially
|
processed. */
|
processed. */
|
void
|
void
|
cpp_post_options (cpp_reader *pfile)
|
cpp_post_options (cpp_reader *pfile)
|
{
|
{
|
int flags;
|
int flags;
|
|
|
sanity_checks (pfile);
|
sanity_checks (pfile);
|
|
|
post_options (pfile);
|
post_options (pfile);
|
|
|
/* Mark named operators before handling command line macros. */
|
/* Mark named operators before handling command line macros. */
|
flags = 0;
|
flags = 0;
|
if (CPP_OPTION (pfile, cplusplus) && CPP_OPTION (pfile, operator_names))
|
if (CPP_OPTION (pfile, cplusplus) && CPP_OPTION (pfile, operator_names))
|
flags |= NODE_OPERATOR;
|
flags |= NODE_OPERATOR;
|
if (CPP_OPTION (pfile, warn_cxx_operator_names))
|
if (CPP_OPTION (pfile, warn_cxx_operator_names))
|
flags |= NODE_DIAGNOSTIC | NODE_WARN_OPERATOR;
|
flags |= NODE_DIAGNOSTIC | NODE_WARN_OPERATOR;
|
if (flags != 0)
|
if (flags != 0)
|
mark_named_operators (pfile, flags);
|
mark_named_operators (pfile, flags);
|
}
|
}
|
|
|
/* Setup for processing input from the file named FNAME, or stdin if
|
/* Setup for processing input from the file named FNAME, or stdin if
|
it is the empty string. Return the original filename
|
it is the empty string. Return the original filename
|
on success (e.g. foo.i->foo.c), or NULL on failure. */
|
on success (e.g. foo.i->foo.c), or NULL on failure. */
|
const char *
|
const char *
|
cpp_read_main_file (cpp_reader *pfile, const char *fname)
|
cpp_read_main_file (cpp_reader *pfile, const char *fname)
|
{
|
{
|
if (CPP_OPTION (pfile, deps.style) != DEPS_NONE)
|
if (CPP_OPTION (pfile, deps.style) != DEPS_NONE)
|
{
|
{
|
if (!pfile->deps)
|
if (!pfile->deps)
|
pfile->deps = deps_init ();
|
pfile->deps = deps_init ();
|
|
|
/* Set the default target (if there is none already). */
|
/* Set the default target (if there is none already). */
|
deps_add_default_target (pfile->deps, fname);
|
deps_add_default_target (pfile->deps, fname);
|
}
|
}
|
|
|
pfile->main_file
|
pfile->main_file
|
= _cpp_find_file (pfile, fname, &pfile->no_search_path, false, 0);
|
= _cpp_find_file (pfile, fname, &pfile->no_search_path, false, 0);
|
if (_cpp_find_failed (pfile->main_file))
|
if (_cpp_find_failed (pfile->main_file))
|
return NULL;
|
return NULL;
|
|
|
_cpp_stack_file (pfile, pfile->main_file, false);
|
_cpp_stack_file (pfile, pfile->main_file, false);
|
|
|
/* For foo.i, read the original filename foo.c now, for the benefit
|
/* For foo.i, read the original filename foo.c now, for the benefit
|
of the front ends. */
|
of the front ends. */
|
if (CPP_OPTION (pfile, preprocessed))
|
if (CPP_OPTION (pfile, preprocessed))
|
{
|
{
|
read_original_filename (pfile);
|
read_original_filename (pfile);
|
fname =
|
fname =
|
ORDINARY_MAP_FILE_NAME
|
ORDINARY_MAP_FILE_NAME
|
((LINEMAPS_LAST_ORDINARY_MAP (pfile->line_table)));
|
((LINEMAPS_LAST_ORDINARY_MAP (pfile->line_table)));
|
}
|
}
|
return fname;
|
return fname;
|
}
|
}
|
|
|
/* For preprocessed files, if the first tokens are of the form # NUM.
|
/* For preprocessed files, if the first tokens are of the form # NUM.
|
handle the directive so we know the original file name. This will
|
handle the directive so we know the original file name. This will
|
generate file_change callbacks, which the front ends must handle
|
generate file_change callbacks, which the front ends must handle
|
appropriately given their state of initialization. */
|
appropriately given their state of initialization. */
|
static void
|
static void
|
read_original_filename (cpp_reader *pfile)
|
read_original_filename (cpp_reader *pfile)
|
{
|
{
|
const cpp_token *token, *token1;
|
const cpp_token *token, *token1;
|
|
|
/* Lex ahead; if the first tokens are of the form # NUM, then
|
/* Lex ahead; if the first tokens are of the form # NUM, then
|
process the directive, otherwise back up. */
|
process the directive, otherwise back up. */
|
token = _cpp_lex_direct (pfile);
|
token = _cpp_lex_direct (pfile);
|
if (token->type == CPP_HASH)
|
if (token->type == CPP_HASH)
|
{
|
{
|
pfile->state.in_directive = 1;
|
pfile->state.in_directive = 1;
|
token1 = _cpp_lex_direct (pfile);
|
token1 = _cpp_lex_direct (pfile);
|
_cpp_backup_tokens (pfile, 1);
|
_cpp_backup_tokens (pfile, 1);
|
pfile->state.in_directive = 0;
|
pfile->state.in_directive = 0;
|
|
|
/* If it's a #line directive, handle it. */
|
/* If it's a #line directive, handle it. */
|
if (token1->type == CPP_NUMBER
|
if (token1->type == CPP_NUMBER
|
&& _cpp_handle_directive (pfile, token->flags & PREV_WHITE))
|
&& _cpp_handle_directive (pfile, token->flags & PREV_WHITE))
|
{
|
{
|
read_original_directory (pfile);
|
read_original_directory (pfile);
|
return;
|
return;
|
}
|
}
|
}
|
}
|
|
|
/* Backup as if nothing happened. */
|
/* Backup as if nothing happened. */
|
_cpp_backup_tokens (pfile, 1);
|
_cpp_backup_tokens (pfile, 1);
|
}
|
}
|
|
|
/* For preprocessed files, if the tokens following the first filename
|
/* For preprocessed files, if the tokens following the first filename
|
line is of the form # <line> "/path/name//", handle the
|
line is of the form # <line> "/path/name//", handle the
|
directive so we know the original current directory. */
|
directive so we know the original current directory. */
|
static void
|
static void
|
read_original_directory (cpp_reader *pfile)
|
read_original_directory (cpp_reader *pfile)
|
{
|
{
|
const cpp_token *hash, *token;
|
const cpp_token *hash, *token;
|
|
|
/* Lex ahead; if the first tokens are of the form # NUM, then
|
/* Lex ahead; if the first tokens are of the form # NUM, then
|
process the directive, otherwise back up. */
|
process the directive, otherwise back up. */
|
hash = _cpp_lex_direct (pfile);
|
hash = _cpp_lex_direct (pfile);
|
if (hash->type != CPP_HASH)
|
if (hash->type != CPP_HASH)
|
{
|
{
|
_cpp_backup_tokens (pfile, 1);
|
_cpp_backup_tokens (pfile, 1);
|
return;
|
return;
|
}
|
}
|
|
|
token = _cpp_lex_direct (pfile);
|
token = _cpp_lex_direct (pfile);
|
|
|
if (token->type != CPP_NUMBER)
|
if (token->type != CPP_NUMBER)
|
{
|
{
|
_cpp_backup_tokens (pfile, 2);
|
_cpp_backup_tokens (pfile, 2);
|
return;
|
return;
|
}
|
}
|
|
|
token = _cpp_lex_direct (pfile);
|
token = _cpp_lex_direct (pfile);
|
|
|
if (token->type != CPP_STRING
|
if (token->type != CPP_STRING
|
|| ! (token->val.str.len >= 5
|
|| ! (token->val.str.len >= 5
|
&& IS_DIR_SEPARATOR (token->val.str.text[token->val.str.len-2])
|
&& IS_DIR_SEPARATOR (token->val.str.text[token->val.str.len-2])
|
&& IS_DIR_SEPARATOR (token->val.str.text[token->val.str.len-3])))
|
&& IS_DIR_SEPARATOR (token->val.str.text[token->val.str.len-3])))
|
{
|
{
|
_cpp_backup_tokens (pfile, 3);
|
_cpp_backup_tokens (pfile, 3);
|
return;
|
return;
|
}
|
}
|
|
|
if (pfile->cb.dir_change)
|
if (pfile->cb.dir_change)
|
{
|
{
|
char *debugdir = (char *) alloca (token->val.str.len - 3);
|
char *debugdir = (char *) alloca (token->val.str.len - 3);
|
|
|
memcpy (debugdir, (const char *) token->val.str.text + 1,
|
memcpy (debugdir, (const char *) token->val.str.text + 1,
|
token->val.str.len - 4);
|
token->val.str.len - 4);
|
debugdir[token->val.str.len - 4] = '\0';
|
debugdir[token->val.str.len - 4] = '\0';
|
|
|
pfile->cb.dir_change (pfile, debugdir);
|
pfile->cb.dir_change (pfile, debugdir);
|
}
|
}
|
}
|
}
|
|
|
/* This is called at the end of preprocessing. It pops the last
|
/* This is called at the end of preprocessing. It pops the last
|
buffer and writes dependency output.
|
buffer and writes dependency output.
|
|
|
Maybe it should also reset state, such that you could call
|
Maybe it should also reset state, such that you could call
|
cpp_start_read with a new filename to restart processing. */
|
cpp_start_read with a new filename to restart processing. */
|
void
|
void
|
cpp_finish (cpp_reader *pfile, FILE *deps_stream)
|
cpp_finish (cpp_reader *pfile, FILE *deps_stream)
|
{
|
{
|
/* Warn about unused macros before popping the final buffer. */
|
/* Warn about unused macros before popping the final buffer. */
|
if (CPP_OPTION (pfile, warn_unused_macros))
|
if (CPP_OPTION (pfile, warn_unused_macros))
|
cpp_forall_identifiers (pfile, _cpp_warn_if_unused_macro, NULL);
|
cpp_forall_identifiers (pfile, _cpp_warn_if_unused_macro, NULL);
|
|
|
/* lex.c leaves the final buffer on the stack. This it so that
|
/* lex.c leaves the final buffer on the stack. This it so that
|
it returns an unending stream of CPP_EOFs to the client. If we
|
it returns an unending stream of CPP_EOFs to the client. If we
|
popped the buffer, we'd dereference a NULL buffer pointer and
|
popped the buffer, we'd dereference a NULL buffer pointer and
|
segfault. It's nice to allow the client to do worry-free excess
|
segfault. It's nice to allow the client to do worry-free excess
|
cpp_get_token calls. */
|
cpp_get_token calls. */
|
while (pfile->buffer)
|
while (pfile->buffer)
|
_cpp_pop_buffer (pfile);
|
_cpp_pop_buffer (pfile);
|
|
|
if (CPP_OPTION (pfile, deps.style) != DEPS_NONE
|
if (CPP_OPTION (pfile, deps.style) != DEPS_NONE
|
&& deps_stream)
|
&& deps_stream)
|
{
|
{
|
deps_write (pfile->deps, deps_stream, 72);
|
deps_write (pfile->deps, deps_stream, 72);
|
|
|
if (CPP_OPTION (pfile, deps.phony_targets))
|
if (CPP_OPTION (pfile, deps.phony_targets))
|
deps_phony_targets (pfile->deps, deps_stream);
|
deps_phony_targets (pfile->deps, deps_stream);
|
}
|
}
|
|
|
/* Report on headers that could use multiple include guards. */
|
/* Report on headers that could use multiple include guards. */
|
if (CPP_OPTION (pfile, print_include_names))
|
if (CPP_OPTION (pfile, print_include_names))
|
_cpp_report_missing_guards (pfile);
|
_cpp_report_missing_guards (pfile);
|
}
|
}
|
|
|
static void
|
static void
|
post_options (cpp_reader *pfile)
|
post_options (cpp_reader *pfile)
|
{
|
{
|
/* -Wtraditional is not useful in C++ mode. */
|
/* -Wtraditional is not useful in C++ mode. */
|
if (CPP_OPTION (pfile, cplusplus))
|
if (CPP_OPTION (pfile, cplusplus))
|
CPP_OPTION (pfile, cpp_warn_traditional) = 0;
|
CPP_OPTION (pfile, cpp_warn_traditional) = 0;
|
|
|
/* Permanently disable macro expansion if we are rescanning
|
/* Permanently disable macro expansion if we are rescanning
|
preprocessed text. Read preprocesed source in ISO mode. */
|
preprocessed text. Read preprocesed source in ISO mode. */
|
if (CPP_OPTION (pfile, preprocessed))
|
if (CPP_OPTION (pfile, preprocessed))
|
{
|
{
|
if (!CPP_OPTION (pfile, directives_only))
|
if (!CPP_OPTION (pfile, directives_only))
|
pfile->state.prevent_expansion = 1;
|
pfile->state.prevent_expansion = 1;
|
CPP_OPTION (pfile, traditional) = 0;
|
CPP_OPTION (pfile, traditional) = 0;
|
}
|
}
|
|
|
if (CPP_OPTION (pfile, warn_trigraphs) == 2)
|
if (CPP_OPTION (pfile, warn_trigraphs) == 2)
|
CPP_OPTION (pfile, warn_trigraphs) = !CPP_OPTION (pfile, trigraphs);
|
CPP_OPTION (pfile, warn_trigraphs) = !CPP_OPTION (pfile, trigraphs);
|
|
|
if (CPP_OPTION (pfile, traditional))
|
if (CPP_OPTION (pfile, traditional))
|
{
|
{
|
CPP_OPTION (pfile, cplusplus_comments) = 0;
|
CPP_OPTION (pfile, cplusplus_comments) = 0;
|
|
|
CPP_OPTION (pfile, trigraphs) = 0;
|
CPP_OPTION (pfile, trigraphs) = 0;
|
CPP_OPTION (pfile, warn_trigraphs) = 0;
|
CPP_OPTION (pfile, warn_trigraphs) = 0;
|
}
|
}
|
}
|
}
|
|
|
