/* CPP Library - lexical analysis.
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/* CPP Library - lexical analysis.
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Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009
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Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009
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Free Software Foundation, Inc.
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Free Software Foundation, Inc.
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Contributed by Per Bothner, 1994-95.
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Contributed by Per Bothner, 1994-95.
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Based on CCCP program by Paul Rubin, June 1986
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Based on CCCP program by Paul Rubin, June 1986
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Adapted to ANSI C, Richard Stallman, Jan 1987
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Adapted to ANSI C, Richard Stallman, Jan 1987
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Broken out to separate file, Zack Weinberg, Mar 2000
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Broken out to separate file, Zack Weinberg, Mar 2000
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|
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This program is free software; you can redistribute it and/or modify it
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 3, or (at your option) any
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Free Software Foundation; either version 3, or (at your option) any
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later version.
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later version.
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|
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This program is distributed in the hope that it will be useful,
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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|
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING3. If not see
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along with this program; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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<http://www.gnu.org/licenses/>. */
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|
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#include "config.h"
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#include "config.h"
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#include "system.h"
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#include "system.h"
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#include "cpplib.h"
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#include "cpplib.h"
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#include "internal.h"
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#include "internal.h"
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|
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enum spell_type
|
enum spell_type
|
{
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{
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SPELL_OPERATOR = 0,
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SPELL_OPERATOR = 0,
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SPELL_IDENT,
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SPELL_IDENT,
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SPELL_LITERAL,
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SPELL_LITERAL,
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SPELL_NONE
|
SPELL_NONE
|
};
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};
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|
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struct token_spelling
|
struct token_spelling
|
{
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{
|
enum spell_type category;
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enum spell_type category;
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const unsigned char *name;
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const unsigned char *name;
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};
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};
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|
|
static const unsigned char *const digraph_spellings[] =
|
static const unsigned char *const digraph_spellings[] =
|
{ UC"%:", UC"%:%:", UC"<:", UC":>", UC"<%", UC"%>" };
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{ UC"%:", UC"%:%:", UC"<:", UC":>", UC"<%", UC"%>" };
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|
|
#define OP(e, s) { SPELL_OPERATOR, UC s },
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#define OP(e, s) { SPELL_OPERATOR, UC s },
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#define TK(e, s) { SPELL_ ## s, UC #e },
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#define TK(e, s) { SPELL_ ## s, UC #e },
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static const struct token_spelling token_spellings[N_TTYPES] = { TTYPE_TABLE };
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static const struct token_spelling token_spellings[N_TTYPES] = { TTYPE_TABLE };
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#undef OP
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#undef OP
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#undef TK
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#undef TK
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|
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#define TOKEN_SPELL(token) (token_spellings[(token)->type].category)
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#define TOKEN_SPELL(token) (token_spellings[(token)->type].category)
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#define TOKEN_NAME(token) (token_spellings[(token)->type].name)
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#define TOKEN_NAME(token) (token_spellings[(token)->type].name)
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|
|
static void add_line_note (cpp_buffer *, const uchar *, unsigned int);
|
static void add_line_note (cpp_buffer *, const uchar *, unsigned int);
|
static int skip_line_comment (cpp_reader *);
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static int skip_line_comment (cpp_reader *);
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static void skip_whitespace (cpp_reader *, cppchar_t);
|
static void skip_whitespace (cpp_reader *, cppchar_t);
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static void lex_string (cpp_reader *, cpp_token *, const uchar *);
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static void lex_string (cpp_reader *, cpp_token *, const uchar *);
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static void save_comment (cpp_reader *, cpp_token *, const uchar *, cppchar_t);
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static void save_comment (cpp_reader *, cpp_token *, const uchar *, cppchar_t);
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static void store_comment (cpp_reader *, cpp_token *);
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static void store_comment (cpp_reader *, cpp_token *);
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static void create_literal (cpp_reader *, cpp_token *, const uchar *,
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static void create_literal (cpp_reader *, cpp_token *, const uchar *,
|
unsigned int, enum cpp_ttype);
|
unsigned int, enum cpp_ttype);
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static bool warn_in_comment (cpp_reader *, _cpp_line_note *);
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static bool warn_in_comment (cpp_reader *, _cpp_line_note *);
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static int name_p (cpp_reader *, const cpp_string *);
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static int name_p (cpp_reader *, const cpp_string *);
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static tokenrun *next_tokenrun (tokenrun *);
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static tokenrun *next_tokenrun (tokenrun *);
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|
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static _cpp_buff *new_buff (size_t);
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static _cpp_buff *new_buff (size_t);
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|
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|
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/* Utility routine:
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/* Utility routine:
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|
|
Compares, the token TOKEN to the NUL-terminated string STRING.
|
Compares, the token TOKEN to the NUL-terminated string STRING.
|
TOKEN must be a CPP_NAME. Returns 1 for equal, 0 for unequal. */
|
TOKEN must be a CPP_NAME. Returns 1 for equal, 0 for unequal. */
|
int
|
int
|
cpp_ideq (const cpp_token *token, const char *string)
|
cpp_ideq (const cpp_token *token, const char *string)
|
{
|
{
|
if (token->type != CPP_NAME)
|
if (token->type != CPP_NAME)
|
return 0;
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return 0;
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|
|
return !ustrcmp (NODE_NAME (token->val.node.node), (const uchar *) string);
|
return !ustrcmp (NODE_NAME (token->val.node.node), (const uchar *) string);
|
}
|
}
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|
|
/* Record a note TYPE at byte POS into the current cleaned logical
|
/* Record a note TYPE at byte POS into the current cleaned logical
|
line. */
|
line. */
|
static void
|
static void
|
add_line_note (cpp_buffer *buffer, const uchar *pos, unsigned int type)
|
add_line_note (cpp_buffer *buffer, const uchar *pos, unsigned int type)
|
{
|
{
|
if (buffer->notes_used == buffer->notes_cap)
|
if (buffer->notes_used == buffer->notes_cap)
|
{
|
{
|
buffer->notes_cap = buffer->notes_cap * 2 + 200;
|
buffer->notes_cap = buffer->notes_cap * 2 + 200;
|
buffer->notes = XRESIZEVEC (_cpp_line_note, buffer->notes,
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buffer->notes = XRESIZEVEC (_cpp_line_note, buffer->notes,
|
buffer->notes_cap);
|
buffer->notes_cap);
|
}
|
}
|
|
|
buffer->notes[buffer->notes_used].pos = pos;
|
buffer->notes[buffer->notes_used].pos = pos;
|
buffer->notes[buffer->notes_used].type = type;
|
buffer->notes[buffer->notes_used].type = type;
|
buffer->notes_used++;
|
buffer->notes_used++;
|
}
|
}
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|
|
/* Returns with a logical line that contains no escaped newlines or
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/* Returns with a logical line that contains no escaped newlines or
|
trigraphs. This is a time-critical inner loop. */
|
trigraphs. This is a time-critical inner loop. */
|
void
|
void
|
_cpp_clean_line (cpp_reader *pfile)
|
_cpp_clean_line (cpp_reader *pfile)
|
{
|
{
|
cpp_buffer *buffer;
|
cpp_buffer *buffer;
|
const uchar *s;
|
const uchar *s;
|
uchar c, *d, *p;
|
uchar c, *d, *p;
|
|
|
buffer = pfile->buffer;
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buffer = pfile->buffer;
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buffer->cur_note = buffer->notes_used = 0;
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buffer->cur_note = buffer->notes_used = 0;
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buffer->cur = buffer->line_base = buffer->next_line;
|
buffer->cur = buffer->line_base = buffer->next_line;
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buffer->need_line = false;
|
buffer->need_line = false;
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s = buffer->next_line - 1;
|
s = buffer->next_line - 1;
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|
|
if (!buffer->from_stage3)
|
if (!buffer->from_stage3)
|
{
|
{
|
const uchar *pbackslash = NULL;
|
const uchar *pbackslash = NULL;
|
|
|
/* Short circuit for the common case of an un-escaped line with
|
/* Short circuit for the common case of an un-escaped line with
|
no trigraphs. The primary win here is by not writing any
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no trigraphs. The primary win here is by not writing any
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data back to memory until we have to. */
|
data back to memory until we have to. */
|
for (;;)
|
for (;;)
|
{
|
{
|
c = *++s;
|
c = *++s;
|
if (__builtin_expect (c == '\n', false)
|
if (__builtin_expect (c == '\n', false)
|
|| __builtin_expect (c == '\r', false))
|
|| __builtin_expect (c == '\r', false))
|
{
|
{
|
d = (uchar *) s;
|
d = (uchar *) s;
|
|
|
if (__builtin_expect (s == buffer->rlimit, false))
|
if (__builtin_expect (s == buffer->rlimit, false))
|
goto done;
|
goto done;
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|
|
/* DOS line ending? */
|
/* DOS line ending? */
|
if (__builtin_expect (c == '\r', false)
|
if (__builtin_expect (c == '\r', false)
|
&& s[1] == '\n')
|
&& s[1] == '\n')
|
{
|
{
|
s++;
|
s++;
|
if (s == buffer->rlimit)
|
if (s == buffer->rlimit)
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goto done;
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goto done;
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}
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}
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|
|
if (__builtin_expect (pbackslash == NULL, true))
|
if (__builtin_expect (pbackslash == NULL, true))
|
goto done;
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goto done;
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|
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/* Check for escaped newline. */
|
/* Check for escaped newline. */
|
p = d;
|
p = d;
|
while (is_nvspace (p[-1]))
|
while (is_nvspace (p[-1]))
|
p--;
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p--;
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if (p - 1 != pbackslash)
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if (p - 1 != pbackslash)
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goto done;
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goto done;
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|
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/* Have an escaped newline; process it and proceed to
|
/* Have an escaped newline; process it and proceed to
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the slow path. */
|
the slow path. */
|
add_line_note (buffer, p - 1, p != d ? ' ' : '\\');
|
add_line_note (buffer, p - 1, p != d ? ' ' : '\\');
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d = p - 2;
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d = p - 2;
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buffer->next_line = p - 1;
|
buffer->next_line = p - 1;
|
break;
|
break;
|
}
|
}
|
if (__builtin_expect (c == '\\', false))
|
if (__builtin_expect (c == '\\', false))
|
pbackslash = s;
|
pbackslash = s;
|
else if (__builtin_expect (c == '?', false)
|
else if (__builtin_expect (c == '?', false)
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&& __builtin_expect (s[1] == '?', false)
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&& __builtin_expect (s[1] == '?', false)
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&& _cpp_trigraph_map[s[2]])
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&& _cpp_trigraph_map[s[2]])
|
{
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{
|
/* Have a trigraph. We may or may not have to convert
|
/* Have a trigraph. We may or may not have to convert
|
it. Add a line note regardless, for -Wtrigraphs. */
|
it. Add a line note regardless, for -Wtrigraphs. */
|
add_line_note (buffer, s, s[2]);
|
add_line_note (buffer, s, s[2]);
|
if (CPP_OPTION (pfile, trigraphs))
|
if (CPP_OPTION (pfile, trigraphs))
|
{
|
{
|
/* We do, and that means we have to switch to the
|
/* We do, and that means we have to switch to the
|
slow path. */
|
slow path. */
|
d = (uchar *) s;
|
d = (uchar *) s;
|
*d = _cpp_trigraph_map[s[2]];
|
*d = _cpp_trigraph_map[s[2]];
|
s += 2;
|
s += 2;
|
break;
|
break;
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
|
|
for (;;)
|
for (;;)
|
{
|
{
|
c = *++s;
|
c = *++s;
|
*++d = c;
|
*++d = c;
|
|
|
if (c == '\n' || c == '\r')
|
if (c == '\n' || c == '\r')
|
{
|
{
|
/* Handle DOS line endings. */
|
/* Handle DOS line endings. */
|
if (c == '\r' && s != buffer->rlimit && s[1] == '\n')
|
if (c == '\r' && s != buffer->rlimit && s[1] == '\n')
|
s++;
|
s++;
|
if (s == buffer->rlimit)
|
if (s == buffer->rlimit)
|
break;
|
break;
|
|
|
/* Escaped? */
|
/* Escaped? */
|
p = d;
|
p = d;
|
while (p != buffer->next_line && is_nvspace (p[-1]))
|
while (p != buffer->next_line && is_nvspace (p[-1]))
|
p--;
|
p--;
|
if (p == buffer->next_line || p[-1] != '\\')
|
if (p == buffer->next_line || p[-1] != '\\')
|
break;
|
break;
|
|
|
add_line_note (buffer, p - 1, p != d ? ' ': '\\');
|
add_line_note (buffer, p - 1, p != d ? ' ': '\\');
|
d = p - 2;
|
d = p - 2;
|
buffer->next_line = p - 1;
|
buffer->next_line = p - 1;
|
}
|
}
|
else if (c == '?' && s[1] == '?' && _cpp_trigraph_map[s[2]])
|
else if (c == '?' && s[1] == '?' && _cpp_trigraph_map[s[2]])
|
{
|
{
|
/* Add a note regardless, for the benefit of -Wtrigraphs. */
|
/* Add a note regardless, for the benefit of -Wtrigraphs. */
|
add_line_note (buffer, d, s[2]);
|
add_line_note (buffer, d, s[2]);
|
if (CPP_OPTION (pfile, trigraphs))
|
if (CPP_OPTION (pfile, trigraphs))
|
{
|
{
|
*d = _cpp_trigraph_map[s[2]];
|
*d = _cpp_trigraph_map[s[2]];
|
s += 2;
|
s += 2;
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
else
|
else
|
{
|
{
|
do
|
do
|
s++;
|
s++;
|
while (*s != '\n' && *s != '\r');
|
while (*s != '\n' && *s != '\r');
|
d = (uchar *) s;
|
d = (uchar *) s;
|
|
|
/* Handle DOS line endings. */
|
/* Handle DOS line endings. */
|
if (*s == '\r' && s != buffer->rlimit && s[1] == '\n')
|
if (*s == '\r' && s != buffer->rlimit && s[1] == '\n')
|
s++;
|
s++;
|
}
|
}
|
|
|
done:
|
done:
|
*d = '\n';
|
*d = '\n';
|
/* A sentinel note that should never be processed. */
|
/* A sentinel note that should never be processed. */
|
add_line_note (buffer, d + 1, '\n');
|
add_line_note (buffer, d + 1, '\n');
|
buffer->next_line = s + 1;
|
buffer->next_line = s + 1;
|
}
|
}
|
|
|
/* Return true if the trigraph indicated by NOTE should be warned
|
/* Return true if the trigraph indicated by NOTE should be warned
|
about in a comment. */
|
about in a comment. */
|
static bool
|
static bool
|
warn_in_comment (cpp_reader *pfile, _cpp_line_note *note)
|
warn_in_comment (cpp_reader *pfile, _cpp_line_note *note)
|
{
|
{
|
const uchar *p;
|
const uchar *p;
|
|
|
/* Within comments we don't warn about trigraphs, unless the
|
/* Within comments we don't warn about trigraphs, unless the
|
trigraph forms an escaped newline, as that may change
|
trigraph forms an escaped newline, as that may change
|
behavior. */
|
behavior. */
|
if (note->type != '/')
|
if (note->type != '/')
|
return false;
|
return false;
|
|
|
/* If -trigraphs, then this was an escaped newline iff the next note
|
/* If -trigraphs, then this was an escaped newline iff the next note
|
is coincident. */
|
is coincident. */
|
if (CPP_OPTION (pfile, trigraphs))
|
if (CPP_OPTION (pfile, trigraphs))
|
return note[1].pos == note->pos;
|
return note[1].pos == note->pos;
|
|
|
/* Otherwise, see if this forms an escaped newline. */
|
/* Otherwise, see if this forms an escaped newline. */
|
p = note->pos + 3;
|
p = note->pos + 3;
|
while (is_nvspace (*p))
|
while (is_nvspace (*p))
|
p++;
|
p++;
|
|
|
/* There might have been escaped newlines between the trigraph and the
|
/* There might have been escaped newlines between the trigraph and the
|
newline we found. Hence the position test. */
|
newline we found. Hence the position test. */
|
return (*p == '\n' && p < note[1].pos);
|
return (*p == '\n' && p < note[1].pos);
|
}
|
}
|
|
|
/* Process the notes created by add_line_note as far as the current
|
/* Process the notes created by add_line_note as far as the current
|
location. */
|
location. */
|
void
|
void
|
_cpp_process_line_notes (cpp_reader *pfile, int in_comment)
|
_cpp_process_line_notes (cpp_reader *pfile, int in_comment)
|
{
|
{
|
cpp_buffer *buffer = pfile->buffer;
|
cpp_buffer *buffer = pfile->buffer;
|
|
|
for (;;)
|
for (;;)
|
{
|
{
|
_cpp_line_note *note = &buffer->notes[buffer->cur_note];
|
_cpp_line_note *note = &buffer->notes[buffer->cur_note];
|
unsigned int col;
|
unsigned int col;
|
|
|
if (note->pos > buffer->cur)
|
if (note->pos > buffer->cur)
|
break;
|
break;
|
|
|
buffer->cur_note++;
|
buffer->cur_note++;
|
col = CPP_BUF_COLUMN (buffer, note->pos + 1);
|
col = CPP_BUF_COLUMN (buffer, note->pos + 1);
|
|
|
if (note->type == '\\' || note->type == ' ')
|
if (note->type == '\\' || note->type == ' ')
|
{
|
{
|
if (note->type == ' ' && !in_comment)
|
if (note->type == ' ' && !in_comment)
|
cpp_error_with_line (pfile, CPP_DL_WARNING, pfile->line_table->highest_line, col,
|
cpp_error_with_line (pfile, CPP_DL_WARNING, pfile->line_table->highest_line, col,
|
"backslash and newline separated by space");
|
"backslash and newline separated by space");
|
|
|
if (buffer->next_line > buffer->rlimit)
|
if (buffer->next_line > buffer->rlimit)
|
{
|
{
|
cpp_error_with_line (pfile, CPP_DL_PEDWARN, pfile->line_table->highest_line, col,
|
cpp_error_with_line (pfile, CPP_DL_PEDWARN, pfile->line_table->highest_line, col,
|
"backslash-newline at end of file");
|
"backslash-newline at end of file");
|
/* Prevent "no newline at end of file" warning. */
|
/* Prevent "no newline at end of file" warning. */
|
buffer->next_line = buffer->rlimit;
|
buffer->next_line = buffer->rlimit;
|
}
|
}
|
|
|
buffer->line_base = note->pos;
|
buffer->line_base = note->pos;
|
CPP_INCREMENT_LINE (pfile, 0);
|
CPP_INCREMENT_LINE (pfile, 0);
|
}
|
}
|
else if (_cpp_trigraph_map[note->type])
|
else if (_cpp_trigraph_map[note->type])
|
{
|
{
|
if (CPP_OPTION (pfile, warn_trigraphs)
|
if (CPP_OPTION (pfile, warn_trigraphs)
|
&& (!in_comment || warn_in_comment (pfile, note)))
|
&& (!in_comment || warn_in_comment (pfile, note)))
|
{
|
{
|
if (CPP_OPTION (pfile, trigraphs))
|
if (CPP_OPTION (pfile, trigraphs))
|
cpp_error_with_line (pfile, CPP_DL_WARNING, pfile->line_table->highest_line, col,
|
cpp_error_with_line (pfile, CPP_DL_WARNING, pfile->line_table->highest_line, col,
|
"trigraph ??%c converted to %c",
|
"trigraph ??%c converted to %c",
|
note->type,
|
note->type,
|
(int) _cpp_trigraph_map[note->type]);
|
(int) _cpp_trigraph_map[note->type]);
|
else
|
else
|
{
|
{
|
cpp_error_with_line
|
cpp_error_with_line
|
(pfile, CPP_DL_WARNING, pfile->line_table->highest_line, col,
|
(pfile, CPP_DL_WARNING, pfile->line_table->highest_line, col,
|
"trigraph ??%c ignored, use -trigraphs to enable",
|
"trigraph ??%c ignored, use -trigraphs to enable",
|
note->type);
|
note->type);
|
}
|
}
|
}
|
}
|
}
|
}
|
else if (note->type == 0)
|
else if (note->type == 0)
|
/* Already processed in lex_raw_string. */;
|
/* Already processed in lex_raw_string. */;
|
else
|
else
|
abort ();
|
abort ();
|
}
|
}
|
}
|
}
|
|
|
/* Skip a C-style block comment. We find the end of the comment by
|
/* Skip a C-style block comment. We find the end of the comment by
|
seeing if an asterisk is before every '/' we encounter. Returns
|
seeing if an asterisk is before every '/' we encounter. Returns
|
nonzero if comment terminated by EOF, zero otherwise.
|
nonzero if comment terminated by EOF, zero otherwise.
|
|
|
Buffer->cur points to the initial asterisk of the comment. */
|
Buffer->cur points to the initial asterisk of the comment. */
|
bool
|
bool
|
_cpp_skip_block_comment (cpp_reader *pfile)
|
_cpp_skip_block_comment (cpp_reader *pfile)
|
{
|
{
|
cpp_buffer *buffer = pfile->buffer;
|
cpp_buffer *buffer = pfile->buffer;
|
const uchar *cur = buffer->cur;
|
const uchar *cur = buffer->cur;
|
uchar c;
|
uchar c;
|
|
|
cur++;
|
cur++;
|
if (*cur == '/')
|
if (*cur == '/')
|
cur++;
|
cur++;
|
|
|
for (;;)
|
for (;;)
|
{
|
{
|
/* People like decorating comments with '*', so check for '/'
|
/* People like decorating comments with '*', so check for '/'
|
instead for efficiency. */
|
instead for efficiency. */
|
c = *cur++;
|
c = *cur++;
|
|
|
if (c == '/')
|
if (c == '/')
|
{
|
{
|
if (cur[-2] == '*')
|
if (cur[-2] == '*')
|
break;
|
break;
|
|
|
/* Warn about potential nested comments, but not if the '/'
|
/* Warn about potential nested comments, but not if the '/'
|
comes immediately before the true comment delimiter.
|
comes immediately before the true comment delimiter.
|
Don't bother to get it right across escaped newlines. */
|
Don't bother to get it right across escaped newlines. */
|
if (CPP_OPTION (pfile, warn_comments)
|
if (CPP_OPTION (pfile, warn_comments)
|
&& cur[0] == '*' && cur[1] != '/')
|
&& cur[0] == '*' && cur[1] != '/')
|
{
|
{
|
buffer->cur = cur;
|
buffer->cur = cur;
|
cpp_error_with_line (pfile, CPP_DL_WARNING,
|
cpp_error_with_line (pfile, CPP_DL_WARNING,
|
pfile->line_table->highest_line, CPP_BUF_COL (buffer),
|
pfile->line_table->highest_line, CPP_BUF_COL (buffer),
|
"\"/*\" within comment");
|
"\"/*\" within comment");
|
}
|
}
|
}
|
}
|
else if (c == '\n')
|
else if (c == '\n')
|
{
|
{
|
unsigned int cols;
|
unsigned int cols;
|
buffer->cur = cur - 1;
|
buffer->cur = cur - 1;
|
_cpp_process_line_notes (pfile, true);
|
_cpp_process_line_notes (pfile, true);
|
if (buffer->next_line >= buffer->rlimit)
|
if (buffer->next_line >= buffer->rlimit)
|
return true;
|
return true;
|
_cpp_clean_line (pfile);
|
_cpp_clean_line (pfile);
|
|
|
cols = buffer->next_line - buffer->line_base;
|
cols = buffer->next_line - buffer->line_base;
|
CPP_INCREMENT_LINE (pfile, cols);
|
CPP_INCREMENT_LINE (pfile, cols);
|
|
|
cur = buffer->cur;
|
cur = buffer->cur;
|
}
|
}
|
}
|
}
|
|
|
buffer->cur = cur;
|
buffer->cur = cur;
|
_cpp_process_line_notes (pfile, true);
|
_cpp_process_line_notes (pfile, true);
|
return false;
|
return false;
|
}
|
}
|
|
|
/* Skip a C++ line comment, leaving buffer->cur pointing to the
|
/* Skip a C++ line comment, leaving buffer->cur pointing to the
|
terminating newline. Handles escaped newlines. Returns nonzero
|
terminating newline. Handles escaped newlines. Returns nonzero
|
if a multiline comment. */
|
if a multiline comment. */
|
static int
|
static int
|
skip_line_comment (cpp_reader *pfile)
|
skip_line_comment (cpp_reader *pfile)
|
{
|
{
|
cpp_buffer *buffer = pfile->buffer;
|
cpp_buffer *buffer = pfile->buffer;
|
source_location orig_line = pfile->line_table->highest_line;
|
source_location orig_line = pfile->line_table->highest_line;
|
|
|
while (*buffer->cur != '\n')
|
while (*buffer->cur != '\n')
|
buffer->cur++;
|
buffer->cur++;
|
|
|
_cpp_process_line_notes (pfile, true);
|
_cpp_process_line_notes (pfile, true);
|
return orig_line != pfile->line_table->highest_line;
|
return orig_line != pfile->line_table->highest_line;
|
}
|
}
|
|
|
/* Skips whitespace, saving the next non-whitespace character. */
|
/* Skips whitespace, saving the next non-whitespace character. */
|
static void
|
static void
|
skip_whitespace (cpp_reader *pfile, cppchar_t c)
|
skip_whitespace (cpp_reader *pfile, cppchar_t c)
|
{
|
{
|
cpp_buffer *buffer = pfile->buffer;
|
cpp_buffer *buffer = pfile->buffer;
|
bool saw_NUL = false;
|
bool saw_NUL = false;
|
|
|
do
|
do
|
{
|
{
|
/* Horizontal space always OK. */
|
/* Horizontal space always OK. */
|
if (c == ' ' || c == '\t')
|
if (c == ' ' || c == '\t')
|
;
|
;
|
/* Just \f \v or \0 left. */
|
/* Just \f \v or \0 left. */
|
else if (c == '\0')
|
else if (c == '\0')
|
saw_NUL = true;
|
saw_NUL = true;
|
else if (pfile->state.in_directive && CPP_PEDANTIC (pfile))
|
else if (pfile->state.in_directive && CPP_PEDANTIC (pfile))
|
cpp_error_with_line (pfile, CPP_DL_PEDWARN, pfile->line_table->highest_line,
|
cpp_error_with_line (pfile, CPP_DL_PEDWARN, pfile->line_table->highest_line,
|
CPP_BUF_COL (buffer),
|
CPP_BUF_COL (buffer),
|
"%s in preprocessing directive",
|
"%s in preprocessing directive",
|
c == '\f' ? "form feed" : "vertical tab");
|
c == '\f' ? "form feed" : "vertical tab");
|
|
|
c = *buffer->cur++;
|
c = *buffer->cur++;
|
}
|
}
|
/* We only want non-vertical space, i.e. ' ' \t \f \v \0. */
|
/* We only want non-vertical space, i.e. ' ' \t \f \v \0. */
|
while (is_nvspace (c));
|
while (is_nvspace (c));
|
|
|
if (saw_NUL)
|
if (saw_NUL)
|
cpp_error (pfile, CPP_DL_WARNING, "null character(s) ignored");
|
cpp_error (pfile, CPP_DL_WARNING, "null character(s) ignored");
|
|
|
buffer->cur--;
|
buffer->cur--;
|
}
|
}
|
|
|
/* See if the characters of a number token are valid in a name (no
|
/* See if the characters of a number token are valid in a name (no
|
'.', '+' or '-'). */
|
'.', '+' or '-'). */
|
static int
|
static int
|
name_p (cpp_reader *pfile, const cpp_string *string)
|
name_p (cpp_reader *pfile, const cpp_string *string)
|
{
|
{
|
unsigned int i;
|
unsigned int i;
|
|
|
for (i = 0; i < string->len; i++)
|
for (i = 0; i < string->len; i++)
|
if (!is_idchar (string->text[i]))
|
if (!is_idchar (string->text[i]))
|
return 0;
|
return 0;
|
|
|
return 1;
|
return 1;
|
}
|
}
|
|
|
/* After parsing an identifier or other sequence, produce a warning about
|
/* After parsing an identifier or other sequence, produce a warning about
|
sequences not in NFC/NFKC. */
|
sequences not in NFC/NFKC. */
|
static void
|
static void
|
warn_about_normalization (cpp_reader *pfile,
|
warn_about_normalization (cpp_reader *pfile,
|
const cpp_token *token,
|
const cpp_token *token,
|
const struct normalize_state *s)
|
const struct normalize_state *s)
|
{
|
{
|
if (CPP_OPTION (pfile, warn_normalize) < NORMALIZE_STATE_RESULT (s)
|
if (CPP_OPTION (pfile, warn_normalize) < NORMALIZE_STATE_RESULT (s)
|
&& !pfile->state.skipping)
|
&& !pfile->state.skipping)
|
{
|
{
|
/* Make sure that the token is printed using UCNs, even
|
/* Make sure that the token is printed using UCNs, even
|
if we'd otherwise happily print UTF-8. */
|
if we'd otherwise happily print UTF-8. */
|
unsigned char *buf = XNEWVEC (unsigned char, cpp_token_len (token));
|
unsigned char *buf = XNEWVEC (unsigned char, cpp_token_len (token));
|
size_t sz;
|
size_t sz;
|
|
|
sz = cpp_spell_token (pfile, token, buf, false) - buf;
|
sz = cpp_spell_token (pfile, token, buf, false) - buf;
|
if (NORMALIZE_STATE_RESULT (s) == normalized_C)
|
if (NORMALIZE_STATE_RESULT (s) == normalized_C)
|
cpp_error_with_line (pfile, CPP_DL_WARNING, token->src_loc, 0,
|
cpp_error_with_line (pfile, CPP_DL_WARNING, token->src_loc, 0,
|
"`%.*s' is not in NFKC", (int) sz, buf);
|
"`%.*s' is not in NFKC", (int) sz, buf);
|
else
|
else
|
cpp_error_with_line (pfile, CPP_DL_WARNING, token->src_loc, 0,
|
cpp_error_with_line (pfile, CPP_DL_WARNING, token->src_loc, 0,
|
"`%.*s' is not in NFC", (int) sz, buf);
|
"`%.*s' is not in NFC", (int) sz, buf);
|
}
|
}
|
}
|
}
|
|
|
/* Returns TRUE if the sequence starting at buffer->cur is invalid in
|
/* Returns TRUE if the sequence starting at buffer->cur is invalid in
|
an identifier. FIRST is TRUE if this starts an identifier. */
|
an identifier. FIRST is TRUE if this starts an identifier. */
|
static bool
|
static bool
|
forms_identifier_p (cpp_reader *pfile, int first,
|
forms_identifier_p (cpp_reader *pfile, int first,
|
struct normalize_state *state)
|
struct normalize_state *state)
|
{
|
{
|
cpp_buffer *buffer = pfile->buffer;
|
cpp_buffer *buffer = pfile->buffer;
|
|
|
if (*buffer->cur == '$')
|
if (*buffer->cur == '$')
|
{
|
{
|
if (!CPP_OPTION (pfile, dollars_in_ident))
|
if (!CPP_OPTION (pfile, dollars_in_ident))
|
return false;
|
return false;
|
|
|
buffer->cur++;
|
buffer->cur++;
|
if (CPP_OPTION (pfile, warn_dollars) && !pfile->state.skipping)
|
if (CPP_OPTION (pfile, warn_dollars) && !pfile->state.skipping)
|
{
|
{
|
CPP_OPTION (pfile, warn_dollars) = 0;
|
CPP_OPTION (pfile, warn_dollars) = 0;
|
cpp_error (pfile, CPP_DL_PEDWARN, "'$' in identifier or number");
|
cpp_error (pfile, CPP_DL_PEDWARN, "'$' in identifier or number");
|
}
|
}
|
|
|
return true;
|
return true;
|
}
|
}
|
|
|
/* Is this a syntactically valid UCN? */
|
/* Is this a syntactically valid UCN? */
|
if (CPP_OPTION (pfile, extended_identifiers)
|
if (CPP_OPTION (pfile, extended_identifiers)
|
&& *buffer->cur == '\\'
|
&& *buffer->cur == '\\'
|
&& (buffer->cur[1] == 'u' || buffer->cur[1] == 'U'))
|
&& (buffer->cur[1] == 'u' || buffer->cur[1] == 'U'))
|
{
|
{
|
buffer->cur += 2;
|
buffer->cur += 2;
|
if (_cpp_valid_ucn (pfile, &buffer->cur, buffer->rlimit, 1 + !first,
|
if (_cpp_valid_ucn (pfile, &buffer->cur, buffer->rlimit, 1 + !first,
|
state))
|
state))
|
return true;
|
return true;
|
buffer->cur -= 2;
|
buffer->cur -= 2;
|
}
|
}
|
|
|
return false;
|
return false;
|
}
|
}
|
|
|
/* Helper function to get the cpp_hashnode of the identifier BASE. */
|
/* Helper function to get the cpp_hashnode of the identifier BASE. */
|
static cpp_hashnode *
|
static cpp_hashnode *
|
lex_identifier_intern (cpp_reader *pfile, const uchar *base)
|
lex_identifier_intern (cpp_reader *pfile, const uchar *base)
|
{
|
{
|
cpp_hashnode *result;
|
cpp_hashnode *result;
|
const uchar *cur;
|
const uchar *cur;
|
unsigned int len;
|
unsigned int len;
|
unsigned int hash = HT_HASHSTEP (0, *base);
|
unsigned int hash = HT_HASHSTEP (0, *base);
|
|
|
cur = base + 1;
|
cur = base + 1;
|
while (ISIDNUM (*cur))
|
while (ISIDNUM (*cur))
|
{
|
{
|
hash = HT_HASHSTEP (hash, *cur);
|
hash = HT_HASHSTEP (hash, *cur);
|
cur++;
|
cur++;
|
}
|
}
|
len = cur - base;
|
len = cur - base;
|
hash = HT_HASHFINISH (hash, len);
|
hash = HT_HASHFINISH (hash, len);
|
result = CPP_HASHNODE (ht_lookup_with_hash (pfile->hash_table,
|
result = CPP_HASHNODE (ht_lookup_with_hash (pfile->hash_table,
|
base, len, hash, HT_ALLOC));
|
base, len, hash, HT_ALLOC));
|
|
|
/* Rarely, identifiers require diagnostics when lexed. */
|
/* Rarely, identifiers require diagnostics when lexed. */
|
if (__builtin_expect ((result->flags & NODE_DIAGNOSTIC)
|
if (__builtin_expect ((result->flags & NODE_DIAGNOSTIC)
|
&& !pfile->state.skipping, 0))
|
&& !pfile->state.skipping, 0))
|
{
|
{
|
/* It is allowed to poison the same identifier twice. */
|
/* It is allowed to poison the same identifier twice. */
|
if ((result->flags & NODE_POISONED) && !pfile->state.poisoned_ok)
|
if ((result->flags & NODE_POISONED) && !pfile->state.poisoned_ok)
|
cpp_error (pfile, CPP_DL_ERROR, "attempt to use poisoned \"%s\"",
|
cpp_error (pfile, CPP_DL_ERROR, "attempt to use poisoned \"%s\"",
|
NODE_NAME (result));
|
NODE_NAME (result));
|
|
|
/* Constraint 6.10.3.5: __VA_ARGS__ should only appear in the
|
/* Constraint 6.10.3.5: __VA_ARGS__ should only appear in the
|
replacement list of a variadic macro. */
|
replacement list of a variadic macro. */
|
if (result == pfile->spec_nodes.n__VA_ARGS__
|
if (result == pfile->spec_nodes.n__VA_ARGS__
|
&& !pfile->state.va_args_ok)
|
&& !pfile->state.va_args_ok)
|
cpp_error (pfile, CPP_DL_PEDWARN,
|
cpp_error (pfile, CPP_DL_PEDWARN,
|
"__VA_ARGS__ can only appear in the expansion"
|
"__VA_ARGS__ can only appear in the expansion"
|
" of a C99 variadic macro");
|
" of a C99 variadic macro");
|
|
|
/* For -Wc++-compat, warn about use of C++ named operators. */
|
/* For -Wc++-compat, warn about use of C++ named operators. */
|
if (result->flags & NODE_WARN_OPERATOR)
|
if (result->flags & NODE_WARN_OPERATOR)
|
cpp_error (pfile, CPP_DL_WARNING,
|
cpp_error (pfile, CPP_DL_WARNING,
|
"identifier \"%s\" is a special operator name in C++",
|
"identifier \"%s\" is a special operator name in C++",
|
NODE_NAME (result));
|
NODE_NAME (result));
|
}
|
}
|
|
|
return result;
|
return result;
|
}
|
}
|
|
|
/* Get the cpp_hashnode of an identifier specified by NAME in
|
/* Get the cpp_hashnode of an identifier specified by NAME in
|
the current cpp_reader object. If none is found, NULL is returned. */
|
the current cpp_reader object. If none is found, NULL is returned. */
|
cpp_hashnode *
|
cpp_hashnode *
|
_cpp_lex_identifier (cpp_reader *pfile, const char *name)
|
_cpp_lex_identifier (cpp_reader *pfile, const char *name)
|
{
|
{
|
cpp_hashnode *result;
|
cpp_hashnode *result;
|
result = lex_identifier_intern (pfile, (uchar *) name);
|
result = lex_identifier_intern (pfile, (uchar *) name);
|
return result;
|
return result;
|
}
|
}
|
|
|
/* Lex an identifier starting at BUFFER->CUR - 1. */
|
/* Lex an identifier starting at BUFFER->CUR - 1. */
|
static cpp_hashnode *
|
static cpp_hashnode *
|
lex_identifier (cpp_reader *pfile, const uchar *base, bool starts_ucn,
|
lex_identifier (cpp_reader *pfile, const uchar *base, bool starts_ucn,
|
struct normalize_state *nst)
|
struct normalize_state *nst)
|
{
|
{
|
cpp_hashnode *result;
|
cpp_hashnode *result;
|
const uchar *cur;
|
const uchar *cur;
|
unsigned int len;
|
unsigned int len;
|
unsigned int hash = HT_HASHSTEP (0, *base);
|
unsigned int hash = HT_HASHSTEP (0, *base);
|
|
|
cur = pfile->buffer->cur;
|
cur = pfile->buffer->cur;
|
if (! starts_ucn)
|
if (! starts_ucn)
|
while (ISIDNUM (*cur))
|
while (ISIDNUM (*cur))
|
{
|
{
|
hash = HT_HASHSTEP (hash, *cur);
|
hash = HT_HASHSTEP (hash, *cur);
|
cur++;
|
cur++;
|
}
|
}
|
pfile->buffer->cur = cur;
|
pfile->buffer->cur = cur;
|
if (starts_ucn || forms_identifier_p (pfile, false, nst))
|
if (starts_ucn || forms_identifier_p (pfile, false, nst))
|
{
|
{
|
/* Slower version for identifiers containing UCNs (or $). */
|
/* Slower version for identifiers containing UCNs (or $). */
|
do {
|
do {
|
while (ISIDNUM (*pfile->buffer->cur))
|
while (ISIDNUM (*pfile->buffer->cur))
|
{
|
{
|
pfile->buffer->cur++;
|
pfile->buffer->cur++;
|
NORMALIZE_STATE_UPDATE_IDNUM (nst);
|
NORMALIZE_STATE_UPDATE_IDNUM (nst);
|
}
|
}
|
} while (forms_identifier_p (pfile, false, nst));
|
} while (forms_identifier_p (pfile, false, nst));
|
result = _cpp_interpret_identifier (pfile, base,
|
result = _cpp_interpret_identifier (pfile, base,
|
pfile->buffer->cur - base);
|
pfile->buffer->cur - base);
|
}
|
}
|
else
|
else
|
{
|
{
|
len = cur - base;
|
len = cur - base;
|
hash = HT_HASHFINISH (hash, len);
|
hash = HT_HASHFINISH (hash, len);
|
|
|
result = CPP_HASHNODE (ht_lookup_with_hash (pfile->hash_table,
|
result = CPP_HASHNODE (ht_lookup_with_hash (pfile->hash_table,
|
base, len, hash, HT_ALLOC));
|
base, len, hash, HT_ALLOC));
|
}
|
}
|
|
|
/* Rarely, identifiers require diagnostics when lexed. */
|
/* Rarely, identifiers require diagnostics when lexed. */
|
if (__builtin_expect ((result->flags & NODE_DIAGNOSTIC)
|
if (__builtin_expect ((result->flags & NODE_DIAGNOSTIC)
|
&& !pfile->state.skipping, 0))
|
&& !pfile->state.skipping, 0))
|
{
|
{
|
/* It is allowed to poison the same identifier twice. */
|
/* It is allowed to poison the same identifier twice. */
|
if ((result->flags & NODE_POISONED) && !pfile->state.poisoned_ok)
|
if ((result->flags & NODE_POISONED) && !pfile->state.poisoned_ok)
|
cpp_error (pfile, CPP_DL_ERROR, "attempt to use poisoned \"%s\"",
|
cpp_error (pfile, CPP_DL_ERROR, "attempt to use poisoned \"%s\"",
|
NODE_NAME (result));
|
NODE_NAME (result));
|
|
|
/* Constraint 6.10.3.5: __VA_ARGS__ should only appear in the
|
/* Constraint 6.10.3.5: __VA_ARGS__ should only appear in the
|
replacement list of a variadic macro. */
|
replacement list of a variadic macro. */
|
if (result == pfile->spec_nodes.n__VA_ARGS__
|
if (result == pfile->spec_nodes.n__VA_ARGS__
|
&& !pfile->state.va_args_ok)
|
&& !pfile->state.va_args_ok)
|
cpp_error (pfile, CPP_DL_PEDWARN,
|
cpp_error (pfile, CPP_DL_PEDWARN,
|
"__VA_ARGS__ can only appear in the expansion"
|
"__VA_ARGS__ can only appear in the expansion"
|
" of a C99 variadic macro");
|
" of a C99 variadic macro");
|
|
|
/* For -Wc++-compat, warn about use of C++ named operators. */
|
/* For -Wc++-compat, warn about use of C++ named operators. */
|
if (result->flags & NODE_WARN_OPERATOR)
|
if (result->flags & NODE_WARN_OPERATOR)
|
cpp_error (pfile, CPP_DL_WARNING,
|
cpp_error (pfile, CPP_DL_WARNING,
|
"identifier \"%s\" is a special operator name in C++",
|
"identifier \"%s\" is a special operator name in C++",
|
NODE_NAME (result));
|
NODE_NAME (result));
|
}
|
}
|
|
|
return result;
|
return result;
|
}
|
}
|
|
|
/* Lex a number to NUMBER starting at BUFFER->CUR - 1. */
|
/* Lex a number to NUMBER starting at BUFFER->CUR - 1. */
|
static void
|
static void
|
lex_number (cpp_reader *pfile, cpp_string *number,
|
lex_number (cpp_reader *pfile, cpp_string *number,
|
struct normalize_state *nst)
|
struct normalize_state *nst)
|
{
|
{
|
const uchar *cur;
|
const uchar *cur;
|
const uchar *base;
|
const uchar *base;
|
uchar *dest;
|
uchar *dest;
|
|
|
base = pfile->buffer->cur - 1;
|
base = pfile->buffer->cur - 1;
|
do
|
do
|
{
|
{
|
cur = pfile->buffer->cur;
|
cur = pfile->buffer->cur;
|
|
|
/* N.B. ISIDNUM does not include $. */
|
/* N.B. ISIDNUM does not include $. */
|
while (ISIDNUM (*cur) || *cur == '.' || VALID_SIGN (*cur, cur[-1]))
|
while (ISIDNUM (*cur) || *cur == '.' || VALID_SIGN (*cur, cur[-1]))
|
{
|
{
|
cur++;
|
cur++;
|
NORMALIZE_STATE_UPDATE_IDNUM (nst);
|
NORMALIZE_STATE_UPDATE_IDNUM (nst);
|
}
|
}
|
|
|
pfile->buffer->cur = cur;
|
pfile->buffer->cur = cur;
|
}
|
}
|
while (forms_identifier_p (pfile, false, nst));
|
while (forms_identifier_p (pfile, false, nst));
|
|
|
number->len = cur - base;
|
number->len = cur - base;
|
dest = _cpp_unaligned_alloc (pfile, number->len + 1);
|
dest = _cpp_unaligned_alloc (pfile, number->len + 1);
|
memcpy (dest, base, number->len);
|
memcpy (dest, base, number->len);
|
dest[number->len] = '\0';
|
dest[number->len] = '\0';
|
number->text = dest;
|
number->text = dest;
|
}
|
}
|
|
|
/* Create a token of type TYPE with a literal spelling. */
|
/* Create a token of type TYPE with a literal spelling. */
|
static void
|
static void
|
create_literal (cpp_reader *pfile, cpp_token *token, const uchar *base,
|
create_literal (cpp_reader *pfile, cpp_token *token, const uchar *base,
|
unsigned int len, enum cpp_ttype type)
|
unsigned int len, enum cpp_ttype type)
|
{
|
{
|
uchar *dest = _cpp_unaligned_alloc (pfile, len + 1);
|
uchar *dest = _cpp_unaligned_alloc (pfile, len + 1);
|
|
|
memcpy (dest, base, len);
|
memcpy (dest, base, len);
|
dest[len] = '\0';
|
dest[len] = '\0';
|
token->type = type;
|
token->type = type;
|
token->val.str.len = len;
|
token->val.str.len = len;
|
token->val.str.text = dest;
|
token->val.str.text = dest;
|
}
|
}
|
|
|
/* Subroutine of lex_raw_string: Append LEN chars from BASE to the buffer
|
/* Subroutine of lex_raw_string: Append LEN chars from BASE to the buffer
|
sequence from *FIRST_BUFF_P to LAST_BUFF_P. */
|
sequence from *FIRST_BUFF_P to LAST_BUFF_P. */
|
|
|
static void
|
static void
|
bufring_append (cpp_reader *pfile, const uchar *base, size_t len,
|
bufring_append (cpp_reader *pfile, const uchar *base, size_t len,
|
_cpp_buff **first_buff_p, _cpp_buff **last_buff_p)
|
_cpp_buff **first_buff_p, _cpp_buff **last_buff_p)
|
{
|
{
|
_cpp_buff *first_buff = *first_buff_p;
|
_cpp_buff *first_buff = *first_buff_p;
|
_cpp_buff *last_buff = *last_buff_p;
|
_cpp_buff *last_buff = *last_buff_p;
|
|
|
if (first_buff == NULL)
|
if (first_buff == NULL)
|
first_buff = last_buff = _cpp_get_buff (pfile, len);
|
first_buff = last_buff = _cpp_get_buff (pfile, len);
|
else if (len > BUFF_ROOM (last_buff))
|
else if (len > BUFF_ROOM (last_buff))
|
{
|
{
|
size_t room = BUFF_ROOM (last_buff);
|
size_t room = BUFF_ROOM (last_buff);
|
memcpy (BUFF_FRONT (last_buff), base, room);
|
memcpy (BUFF_FRONT (last_buff), base, room);
|
BUFF_FRONT (last_buff) += room;
|
BUFF_FRONT (last_buff) += room;
|
base += room;
|
base += room;
|
len -= room;
|
len -= room;
|
last_buff = _cpp_append_extend_buff (pfile, last_buff, len);
|
last_buff = _cpp_append_extend_buff (pfile, last_buff, len);
|
}
|
}
|
|
|
memcpy (BUFF_FRONT (last_buff), base, len);
|
memcpy (BUFF_FRONT (last_buff), base, len);
|
BUFF_FRONT (last_buff) += len;
|
BUFF_FRONT (last_buff) += len;
|
|
|
*first_buff_p = first_buff;
|
*first_buff_p = first_buff;
|
*last_buff_p = last_buff;
|
*last_buff_p = last_buff;
|
}
|
}
|
|
|
/* Lexes a raw string. The stored string contains the spelling, including
|
/* Lexes a raw string. The stored string contains the spelling, including
|
double quotes, delimiter string, '(' and ')', any leading
|
double quotes, delimiter string, '(' and ')', any leading
|
'L', 'u', 'U' or 'u8' and 'R' modifier. It returns the type of the
|
'L', 'u', 'U' or 'u8' and 'R' modifier. It returns the type of the
|
literal, or CPP_OTHER if it was not properly terminated.
|
literal, or CPP_OTHER if it was not properly terminated.
|
|
|
The spelling is NUL-terminated, but it is not guaranteed that this
|
The spelling is NUL-terminated, but it is not guaranteed that this
|
is the first NUL since embedded NULs are preserved. */
|
is the first NUL since embedded NULs are preserved. */
|
|
|
static void
|
static void
|
lex_raw_string (cpp_reader *pfile, cpp_token *token, const uchar *base,
|
lex_raw_string (cpp_reader *pfile, cpp_token *token, const uchar *base,
|
const uchar *cur)
|
const uchar *cur)
|
{
|
{
|
source_location saw_NUL = 0;
|
source_location saw_NUL = 0;
|
const uchar *raw_prefix;
|
const uchar *raw_prefix;
|
unsigned int raw_prefix_len = 0;
|
unsigned int raw_prefix_len = 0;
|
enum cpp_ttype type;
|
enum cpp_ttype type;
|
size_t total_len = 0;
|
size_t total_len = 0;
|
_cpp_buff *first_buff = NULL, *last_buff = NULL;
|
_cpp_buff *first_buff = NULL, *last_buff = NULL;
|
_cpp_line_note *note = &pfile->buffer->notes[pfile->buffer->cur_note];
|
_cpp_line_note *note = &pfile->buffer->notes[pfile->buffer->cur_note];
|
|
|
type = (*base == 'L' ? CPP_WSTRING :
|
type = (*base == 'L' ? CPP_WSTRING :
|
*base == 'U' ? CPP_STRING32 :
|
*base == 'U' ? CPP_STRING32 :
|
*base == 'u' ? (base[1] == '8' ? CPP_UTF8STRING : CPP_STRING16)
|
*base == 'u' ? (base[1] == '8' ? CPP_UTF8STRING : CPP_STRING16)
|
: CPP_STRING);
|
: CPP_STRING);
|
|
|
raw_prefix = cur + 1;
|
raw_prefix = cur + 1;
|
while (raw_prefix_len < 16)
|
while (raw_prefix_len < 16)
|
{
|
{
|
switch (raw_prefix[raw_prefix_len])
|
switch (raw_prefix[raw_prefix_len])
|
{
|
{
|
case ' ': case '(': case ')': case '\\': case '\t':
|
case ' ': case '(': case ')': case '\\': case '\t':
|
case '\v': case '\f': case '\n': default:
|
case '\v': case '\f': case '\n': default:
|
break;
|
break;
|
/* Basic source charset except the above chars. */
|
/* Basic source charset except the above chars. */
|
case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
|
case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
|
case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
|
case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
|
case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
|
case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
|
case 's': case 't': case 'u': case 'v': case 'w': case 'x':
|
case 's': case 't': case 'u': case 'v': case 'w': case 'x':
|
case 'y': case 'z':
|
case 'y': case 'z':
|
case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
|
case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
|
case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
|
case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
|
case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
|
case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
|
case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
|
case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
|
case 'Y': case 'Z':
|
case 'Y': case 'Z':
|
case '0': case '1': case '2': case '3': case '4': case '5':
|
case '0': case '1': case '2': case '3': case '4': case '5':
|
case '6': case '7': case '8': case '9':
|
case '6': case '7': case '8': case '9':
|
case '_': case '{': case '}': case '#': case '[': case ']':
|
case '_': case '{': case '}': case '#': case '[': case ']':
|
case '<': case '>': case '%': case ':': case ';': case '.':
|
case '<': case '>': case '%': case ':': case ';': case '.':
|
case '?': case '*': case '+': case '-': case '/': case '^':
|
case '?': case '*': case '+': case '-': case '/': case '^':
|
case '&': case '|': case '~': case '!': case '=': case ',':
|
case '&': case '|': case '~': case '!': case '=': case ',':
|
case '"': case '\'':
|
case '"': case '\'':
|
raw_prefix_len++;
|
raw_prefix_len++;
|
continue;
|
continue;
|
}
|
}
|
break;
|
break;
|
}
|
}
|
|
|
if (raw_prefix[raw_prefix_len] != '(')
|
if (raw_prefix[raw_prefix_len] != '(')
|
{
|
{
|
int col = CPP_BUF_COLUMN (pfile->buffer, raw_prefix + raw_prefix_len)
|
int col = CPP_BUF_COLUMN (pfile->buffer, raw_prefix + raw_prefix_len)
|
+ 1;
|
+ 1;
|
if (raw_prefix_len == 16)
|
if (raw_prefix_len == 16)
|
cpp_error_with_line (pfile, CPP_DL_ERROR, token->src_loc, col,
|
cpp_error_with_line (pfile, CPP_DL_ERROR, token->src_loc, col,
|
"raw string delimiter longer than 16 characters");
|
"raw string delimiter longer than 16 characters");
|
else
|
else
|
cpp_error_with_line (pfile, CPP_DL_ERROR, token->src_loc, col,
|
cpp_error_with_line (pfile, CPP_DL_ERROR, token->src_loc, col,
|
"invalid character '%c' in raw string delimiter",
|
"invalid character '%c' in raw string delimiter",
|
(int) raw_prefix[raw_prefix_len]);
|
(int) raw_prefix[raw_prefix_len]);
|
pfile->buffer->cur = raw_prefix - 1;
|
pfile->buffer->cur = raw_prefix - 1;
|
create_literal (pfile, token, base, raw_prefix - 1 - base, CPP_OTHER);
|
create_literal (pfile, token, base, raw_prefix - 1 - base, CPP_OTHER);
|
return;
|
return;
|
}
|
}
|
|
|
cur = raw_prefix + raw_prefix_len + 1;
|
cur = raw_prefix + raw_prefix_len + 1;
|
for (;;)
|
for (;;)
|
{
|
{
|
#define BUF_APPEND(STR,LEN) \
|
#define BUF_APPEND(STR,LEN) \
|
do { \
|
do { \
|
bufring_append (pfile, (const uchar *)(STR), (LEN), \
|
bufring_append (pfile, (const uchar *)(STR), (LEN), \
|
&first_buff, &last_buff); \
|
&first_buff, &last_buff); \
|
total_len += (LEN); \
|
total_len += (LEN); \
|
} while (0);
|
} while (0);
|
|
|
cppchar_t c;
|
cppchar_t c;
|
|
|
/* If we previously performed any trigraph or line splicing
|
/* If we previously performed any trigraph or line splicing
|
transformations, undo them within the body of the raw string. */
|
transformations, undo them within the body of the raw string. */
|
while (note->pos < cur)
|
while (note->pos < cur)
|
++note;
|
++note;
|
for (; note->pos == cur; ++note)
|
for (; note->pos == cur; ++note)
|
{
|
{
|
switch (note->type)
|
switch (note->type)
|
{
|
{
|
case '\\':
|
case '\\':
|
case ' ':
|
case ' ':
|
/* Restore backslash followed by newline. */
|
/* Restore backslash followed by newline. */
|
BUF_APPEND (base, cur - base);
|
BUF_APPEND (base, cur - base);
|
base = cur;
|
base = cur;
|
BUF_APPEND ("\\", 1);
|
BUF_APPEND ("\\", 1);
|
after_backslash:
|
after_backslash:
|
if (note->type == ' ')
|
if (note->type == ' ')
|
{
|
{
|
/* GNU backslash whitespace newline extension. FIXME
|
/* GNU backslash whitespace newline extension. FIXME
|
could be any sequence of non-vertical space. When we
|
could be any sequence of non-vertical space. When we
|
can properly restore any such sequence, we should mark
|
can properly restore any such sequence, we should mark
|
this note as handled so _cpp_process_line_notes
|
this note as handled so _cpp_process_line_notes
|
doesn't warn. */
|
doesn't warn. */
|
BUF_APPEND (" ", 1);
|
BUF_APPEND (" ", 1);
|
}
|
}
|
|
|
BUF_APPEND ("\n", 1);
|
BUF_APPEND ("\n", 1);
|
break;
|
break;
|
|
|
case 0:
|
case 0:
|
/* Already handled. */
|
/* Already handled. */
|
break;
|
break;
|
|
|
default:
|
default:
|
if (_cpp_trigraph_map[note->type])
|
if (_cpp_trigraph_map[note->type])
|
{
|
{
|
/* Don't warn about this trigraph in
|
/* Don't warn about this trigraph in
|
_cpp_process_line_notes, since trigraphs show up as
|
_cpp_process_line_notes, since trigraphs show up as
|
trigraphs in raw strings. */
|
trigraphs in raw strings. */
|
uchar type = note->type;
|
uchar type = note->type;
|
note->type = 0;
|
note->type = 0;
|
|
|
if (!CPP_OPTION (pfile, trigraphs))
|
if (!CPP_OPTION (pfile, trigraphs))
|
/* If we didn't convert the trigraph in the first
|
/* If we didn't convert the trigraph in the first
|
place, don't do anything now either. */
|
place, don't do anything now either. */
|
break;
|
break;
|
|
|
BUF_APPEND (base, cur - base);
|
BUF_APPEND (base, cur - base);
|
base = cur;
|
base = cur;
|
BUF_APPEND ("??", 2);
|
BUF_APPEND ("??", 2);
|
|
|
/* ??/ followed by newline gets two line notes, one for
|
/* ??/ followed by newline gets two line notes, one for
|
the trigraph and one for the backslash/newline. */
|
the trigraph and one for the backslash/newline. */
|
if (type == '/' && note[1].pos == cur)
|
if (type == '/' && note[1].pos == cur)
|
{
|
{
|
if (note[1].type != '\\'
|
if (note[1].type != '\\'
|
&& note[1].type != ' ')
|
&& note[1].type != ' ')
|
abort ();
|
abort ();
|
BUF_APPEND ("/", 1);
|
BUF_APPEND ("/", 1);
|
++note;
|
++note;
|
goto after_backslash;
|
goto after_backslash;
|
}
|
}
|
/* The ) from ??) could be part of the suffix. */
|
/* The ) from ??) could be part of the suffix. */
|
else if (type == ')'
|
else if (type == ')'
|
&& strncmp ((const char *) cur+1,
|
&& strncmp ((const char *) cur+1,
|
(const char *) raw_prefix,
|
(const char *) raw_prefix,
|
raw_prefix_len) == 0
|
raw_prefix_len) == 0
|
&& cur[raw_prefix_len+1] == '"')
|
&& cur[raw_prefix_len+1] == '"')
|
{
|
{
|
cur += raw_prefix_len+2;
|
cur += raw_prefix_len+2;
|
goto break_outer_loop;
|
goto break_outer_loop;
|
}
|
}
|
else
|
else
|
{
|
{
|
/* Skip the replacement character. */
|
/* Skip the replacement character. */
|
base = ++cur;
|
base = ++cur;
|
BUF_APPEND (&type, 1);
|
BUF_APPEND (&type, 1);
|
}
|
}
|
}
|
}
|
else
|
else
|
abort ();
|
abort ();
|
break;
|
break;
|
}
|
}
|
}
|
}
|
c = *cur++;
|
c = *cur++;
|
|
|
if (c == ')'
|
if (c == ')'
|
&& strncmp ((const char *) cur, (const char *) raw_prefix,
|
&& strncmp ((const char *) cur, (const char *) raw_prefix,
|
raw_prefix_len) == 0
|
raw_prefix_len) == 0
|
&& cur[raw_prefix_len] == '"')
|
&& cur[raw_prefix_len] == '"')
|
{
|
{
|
cur += raw_prefix_len + 1;
|
cur += raw_prefix_len + 1;
|
break;
|
break;
|
}
|
}
|
else if (c == '\n')
|
else if (c == '\n')
|
{
|
{
|
if (pfile->state.in_directive
|
if (pfile->state.in_directive
|
|| pfile->state.parsing_args
|
|| pfile->state.parsing_args
|
|| pfile->state.in_deferred_pragma)
|
|| pfile->state.in_deferred_pragma)
|
{
|
{
|
cur--;
|
cur--;
|
type = CPP_OTHER;
|
type = CPP_OTHER;
|
cpp_error_with_line (pfile, CPP_DL_ERROR, token->src_loc, 0,
|
cpp_error_with_line (pfile, CPP_DL_ERROR, token->src_loc, 0,
|
"unterminated raw string");
|
"unterminated raw string");
|
break;
|
break;
|
}
|
}
|
|
|
BUF_APPEND (base, cur - base);
|
BUF_APPEND (base, cur - base);
|
|
|
if (pfile->buffer->cur < pfile->buffer->rlimit)
|
if (pfile->buffer->cur < pfile->buffer->rlimit)
|
CPP_INCREMENT_LINE (pfile, 0);
|
CPP_INCREMENT_LINE (pfile, 0);
|
pfile->buffer->need_line = true;
|
pfile->buffer->need_line = true;
|
|
|
pfile->buffer->cur = cur-1;
|
pfile->buffer->cur = cur-1;
|
_cpp_process_line_notes (pfile, false);
|
_cpp_process_line_notes (pfile, false);
|
if (!_cpp_get_fresh_line (pfile))
|
if (!_cpp_get_fresh_line (pfile))
|
{
|
{
|
source_location src_loc = token->src_loc;
|
source_location src_loc = token->src_loc;
|
token->type = CPP_EOF;
|
token->type = CPP_EOF;
|
/* Tell the compiler the line number of the EOF token. */
|
/* Tell the compiler the line number of the EOF token. */
|
token->src_loc = pfile->line_table->highest_line;
|
token->src_loc = pfile->line_table->highest_line;
|
token->flags = BOL;
|
token->flags = BOL;
|
if (first_buff != NULL)
|
if (first_buff != NULL)
|
_cpp_release_buff (pfile, first_buff);
|
_cpp_release_buff (pfile, first_buff);
|
cpp_error_with_line (pfile, CPP_DL_ERROR, src_loc, 0,
|
cpp_error_with_line (pfile, CPP_DL_ERROR, src_loc, 0,
|
"unterminated raw string");
|
"unterminated raw string");
|
return;
|
return;
|
}
|
}
|
|
|
cur = base = pfile->buffer->cur;
|
cur = base = pfile->buffer->cur;
|
note = &pfile->buffer->notes[pfile->buffer->cur_note];
|
note = &pfile->buffer->notes[pfile->buffer->cur_note];
|
}
|
}
|
else if (c == '\0' && !saw_NUL)
|
else if (c == '\0' && !saw_NUL)
|
LINEMAP_POSITION_FOR_COLUMN (saw_NUL, pfile->line_table,
|
LINEMAP_POSITION_FOR_COLUMN (saw_NUL, pfile->line_table,
|
CPP_BUF_COLUMN (pfile->buffer, cur));
|
CPP_BUF_COLUMN (pfile->buffer, cur));
|
}
|
}
|
break_outer_loop:
|
break_outer_loop:
|
|
|
if (saw_NUL && !pfile->state.skipping)
|
if (saw_NUL && !pfile->state.skipping)
|
cpp_error_with_line (pfile, CPP_DL_WARNING, saw_NUL, 0,
|
cpp_error_with_line (pfile, CPP_DL_WARNING, saw_NUL, 0,
|
"null character(s) preserved in literal");
|
"null character(s) preserved in literal");
|
|
|
pfile->buffer->cur = cur;
|
pfile->buffer->cur = cur;
|
if (first_buff == NULL)
|
if (first_buff == NULL)
|
create_literal (pfile, token, base, cur - base, type);
|
create_literal (pfile, token, base, cur - base, type);
|
else
|
else
|
{
|
{
|
uchar *dest = _cpp_unaligned_alloc (pfile, total_len + (cur - base) + 1);
|
uchar *dest = _cpp_unaligned_alloc (pfile, total_len + (cur - base) + 1);
|
|
|
token->type = type;
|
token->type = type;
|
token->val.str.len = total_len + (cur - base);
|
token->val.str.len = total_len + (cur - base);
|
token->val.str.text = dest;
|
token->val.str.text = dest;
|
last_buff = first_buff;
|
last_buff = first_buff;
|
while (last_buff != NULL)
|
while (last_buff != NULL)
|
{
|
{
|
memcpy (dest, last_buff->base,
|
memcpy (dest, last_buff->base,
|
BUFF_FRONT (last_buff) - last_buff->base);
|
BUFF_FRONT (last_buff) - last_buff->base);
|
dest += BUFF_FRONT (last_buff) - last_buff->base;
|
dest += BUFF_FRONT (last_buff) - last_buff->base;
|
last_buff = last_buff->next;
|
last_buff = last_buff->next;
|
}
|
}
|
_cpp_release_buff (pfile, first_buff);
|
_cpp_release_buff (pfile, first_buff);
|
memcpy (dest, base, cur - base);
|
memcpy (dest, base, cur - base);
|
dest[cur - base] = '\0';
|
dest[cur - base] = '\0';
|
}
|
}
|
}
|
}
|
|
|
/* Lexes a string, character constant, or angle-bracketed header file
|
/* Lexes a string, character constant, or angle-bracketed header file
|
name. The stored string contains the spelling, including opening
|
name. The stored string contains the spelling, including opening
|
quote and any leading 'L', 'u', 'U' or 'u8' and optional
|
quote and any leading 'L', 'u', 'U' or 'u8' and optional
|
'R' modifier. It returns the type of the literal, or CPP_OTHER
|
'R' modifier. It returns the type of the literal, or CPP_OTHER
|
if it was not properly terminated, or CPP_LESS for an unterminated
|
if it was not properly terminated, or CPP_LESS for an unterminated
|
header name which must be relexed as normal tokens.
|
header name which must be relexed as normal tokens.
|
|
|
The spelling is NUL-terminated, but it is not guaranteed that this
|
The spelling is NUL-terminated, but it is not guaranteed that this
|
is the first NUL since embedded NULs are preserved. */
|
is the first NUL since embedded NULs are preserved. */
|
static void
|
static void
|
lex_string (cpp_reader *pfile, cpp_token *token, const uchar *base)
|
lex_string (cpp_reader *pfile, cpp_token *token, const uchar *base)
|
{
|
{
|
bool saw_NUL = false;
|
bool saw_NUL = false;
|
const uchar *cur;
|
const uchar *cur;
|
cppchar_t terminator;
|
cppchar_t terminator;
|
enum cpp_ttype type;
|
enum cpp_ttype type;
|
|
|
cur = base;
|
cur = base;
|
terminator = *cur++;
|
terminator = *cur++;
|
if (terminator == 'L' || terminator == 'U')
|
if (terminator == 'L' || terminator == 'U')
|
terminator = *cur++;
|
terminator = *cur++;
|
else if (terminator == 'u')
|
else if (terminator == 'u')
|
{
|
{
|
terminator = *cur++;
|
terminator = *cur++;
|
if (terminator == '8')
|
if (terminator == '8')
|
terminator = *cur++;
|
terminator = *cur++;
|
}
|
}
|
if (terminator == 'R')
|
if (terminator == 'R')
|
{
|
{
|
lex_raw_string (pfile, token, base, cur);
|
lex_raw_string (pfile, token, base, cur);
|
return;
|
return;
|
}
|
}
|
if (terminator == '"')
|
if (terminator == '"')
|
type = (*base == 'L' ? CPP_WSTRING :
|
type = (*base == 'L' ? CPP_WSTRING :
|
*base == 'U' ? CPP_STRING32 :
|
*base == 'U' ? CPP_STRING32 :
|
*base == 'u' ? (base[1] == '8' ? CPP_UTF8STRING : CPP_STRING16)
|
*base == 'u' ? (base[1] == '8' ? CPP_UTF8STRING : CPP_STRING16)
|
: CPP_STRING);
|
: CPP_STRING);
|
else if (terminator == '\'')
|
else if (terminator == '\'')
|
type = (*base == 'L' ? CPP_WCHAR :
|
type = (*base == 'L' ? CPP_WCHAR :
|
*base == 'U' ? CPP_CHAR32 :
|
*base == 'U' ? CPP_CHAR32 :
|
*base == 'u' ? CPP_CHAR16 : CPP_CHAR);
|
*base == 'u' ? CPP_CHAR16 : CPP_CHAR);
|
else
|
else
|
terminator = '>', type = CPP_HEADER_NAME;
|
terminator = '>', type = CPP_HEADER_NAME;
|
|
|
for (;;)
|
for (;;)
|
{
|
{
|
cppchar_t c = *cur++;
|
cppchar_t c = *cur++;
|
|
|
/* In #include-style directives, terminators are not escapable. */
|
/* In #include-style directives, terminators are not escapable. */
|
if (c == '\\' && !pfile->state.angled_headers && *cur != '\n')
|
if (c == '\\' && !pfile->state.angled_headers && *cur != '\n')
|
cur++;
|
cur++;
|
else if (c == terminator)
|
else if (c == terminator)
|
break;
|
break;
|
else if (c == '\n')
|
else if (c == '\n')
|
{
|
{
|
cur--;
|
cur--;
|
/* Unmatched quotes always yield undefined behavior, but
|
/* Unmatched quotes always yield undefined behavior, but
|
greedy lexing means that what appears to be an unterminated
|
greedy lexing means that what appears to be an unterminated
|
header name may actually be a legitimate sequence of tokens. */
|
header name may actually be a legitimate sequence of tokens. */
|
if (terminator == '>')
|
if (terminator == '>')
|
{
|
{
|
token->type = CPP_LESS;
|
token->type = CPP_LESS;
|
return;
|
return;
|
}
|
}
|
type = CPP_OTHER;
|
type = CPP_OTHER;
|
break;
|
break;
|
}
|
}
|
else if (c == '\0')
|
else if (c == '\0')
|
saw_NUL = true;
|
saw_NUL = true;
|
}
|
}
|
|
|
if (saw_NUL && !pfile->state.skipping)
|
if (saw_NUL && !pfile->state.skipping)
|
cpp_error (pfile, CPP_DL_WARNING,
|
cpp_error (pfile, CPP_DL_WARNING,
|
"null character(s) preserved in literal");
|
"null character(s) preserved in literal");
|
|
|
if (type == CPP_OTHER && CPP_OPTION (pfile, lang) != CLK_ASM)
|
if (type == CPP_OTHER && CPP_OPTION (pfile, lang) != CLK_ASM)
|
cpp_error (pfile, CPP_DL_PEDWARN, "missing terminating %c character",
|
cpp_error (pfile, CPP_DL_PEDWARN, "missing terminating %c character",
|
(int) terminator);
|
(int) terminator);
|
|
|
pfile->buffer->cur = cur;
|
pfile->buffer->cur = cur;
|
create_literal (pfile, token, base, cur - base, type);
|
create_literal (pfile, token, base, cur - base, type);
|
}
|
}
|
|
|
/* Return the comment table. The client may not make any assumption
|
/* Return the comment table. The client may not make any assumption
|
about the ordering of the table. */
|
about the ordering of the table. */
|
cpp_comment_table *
|
cpp_comment_table *
|
cpp_get_comments (cpp_reader *pfile)
|
cpp_get_comments (cpp_reader *pfile)
|
{
|
{
|
return &pfile->comments;
|
return &pfile->comments;
|
}
|
}
|
|
|
/* Append a comment to the end of the comment table. */
|
/* Append a comment to the end of the comment table. */
|
static void
|
static void
|
store_comment (cpp_reader *pfile, cpp_token *token)
|
store_comment (cpp_reader *pfile, cpp_token *token)
|
{
|
{
|
int len;
|
int len;
|
|
|
if (pfile->comments.allocated == 0)
|
if (pfile->comments.allocated == 0)
|
{
|
{
|
pfile->comments.allocated = 256;
|
pfile->comments.allocated = 256;
|
pfile->comments.entries = (cpp_comment *) xmalloc
|
pfile->comments.entries = (cpp_comment *) xmalloc
|
(pfile->comments.allocated * sizeof (cpp_comment));
|
(pfile->comments.allocated * sizeof (cpp_comment));
|
}
|
}
|
|
|
if (pfile->comments.count == pfile->comments.allocated)
|
if (pfile->comments.count == pfile->comments.allocated)
|
{
|
{
|
pfile->comments.allocated *= 2;
|
pfile->comments.allocated *= 2;
|
pfile->comments.entries = (cpp_comment *) xrealloc
|
pfile->comments.entries = (cpp_comment *) xrealloc
|
(pfile->comments.entries,
|
(pfile->comments.entries,
|
pfile->comments.allocated * sizeof (cpp_comment));
|
pfile->comments.allocated * sizeof (cpp_comment));
|
}
|
}
|
|
|
len = token->val.str.len;
|
len = token->val.str.len;
|
|
|
/* Copy comment. Note, token may not be NULL terminated. */
|
/* Copy comment. Note, token may not be NULL terminated. */
|
pfile->comments.entries[pfile->comments.count].comment =
|
pfile->comments.entries[pfile->comments.count].comment =
|
(char *) xmalloc (sizeof (char) * (len + 1));
|
(char *) xmalloc (sizeof (char) * (len + 1));
|
memcpy (pfile->comments.entries[pfile->comments.count].comment,
|
memcpy (pfile->comments.entries[pfile->comments.count].comment,
|
token->val.str.text, len);
|
token->val.str.text, len);
|
pfile->comments.entries[pfile->comments.count].comment[len] = '\0';
|
pfile->comments.entries[pfile->comments.count].comment[len] = '\0';
|
|
|
/* Set source location. */
|
/* Set source location. */
|
pfile->comments.entries[pfile->comments.count].sloc = token->src_loc;
|
pfile->comments.entries[pfile->comments.count].sloc = token->src_loc;
|
|
|
/* Increment the count of entries in the comment table. */
|
/* Increment the count of entries in the comment table. */
|
pfile->comments.count++;
|
pfile->comments.count++;
|
}
|
}
|
|
|
/* The stored comment includes the comment start and any terminator. */
|
/* The stored comment includes the comment start and any terminator. */
|
static void
|
static void
|
save_comment (cpp_reader *pfile, cpp_token *token, const unsigned char *from,
|
save_comment (cpp_reader *pfile, cpp_token *token, const unsigned char *from,
|
cppchar_t type)
|
cppchar_t type)
|
{
|
{
|
unsigned char *buffer;
|
unsigned char *buffer;
|
unsigned int len, clen;
|
unsigned int len, clen;
|
|
|
len = pfile->buffer->cur - from + 1; /* + 1 for the initial '/'. */
|
len = pfile->buffer->cur - from + 1; /* + 1 for the initial '/'. */
|
|
|
/* C++ comments probably (not definitely) have moved past a new
|
/* C++ comments probably (not definitely) have moved past a new
|
line, which we don't want to save in the comment. */
|
line, which we don't want to save in the comment. */
|
if (is_vspace (pfile->buffer->cur[-1]))
|
if (is_vspace (pfile->buffer->cur[-1]))
|
len--;
|
len--;
|
|
|
/* If we are currently in a directive, then we need to store all
|
/* If we are currently in a directive, then we need to store all
|
C++ comments as C comments internally, and so we need to
|
C++ comments as C comments internally, and so we need to
|
allocate a little extra space in that case.
|
allocate a little extra space in that case.
|
|
|
Note that the only time we encounter a directive here is
|
Note that the only time we encounter a directive here is
|
when we are saving comments in a "#define". */
|
when we are saving comments in a "#define". */
|
clen = (pfile->state.in_directive && type == '/') ? len + 2 : len;
|
clen = (pfile->state.in_directive && type == '/') ? len + 2 : len;
|
|
|
buffer = _cpp_unaligned_alloc (pfile, clen);
|
buffer = _cpp_unaligned_alloc (pfile, clen);
|
|
|
token->type = CPP_COMMENT;
|
token->type = CPP_COMMENT;
|
token->val.str.len = clen;
|
token->val.str.len = clen;
|
token->val.str.text = buffer;
|
token->val.str.text = buffer;
|
|
|
buffer[0] = '/';
|
buffer[0] = '/';
|
memcpy (buffer + 1, from, len - 1);
|
memcpy (buffer + 1, from, len - 1);
|
|
|
/* Finish conversion to a C comment, if necessary. */
|
/* Finish conversion to a C comment, if necessary. */
|
if (pfile->state.in_directive && type == '/')
|
if (pfile->state.in_directive && type == '/')
|
{
|
{
|
buffer[1] = '*';
|
buffer[1] = '*';
|
buffer[clen - 2] = '*';
|
buffer[clen - 2] = '*';
|
buffer[clen - 1] = '/';
|
buffer[clen - 1] = '/';
|
}
|
}
|
|
|
/* Finally store this comment for use by clients of libcpp. */
|
/* Finally store this comment for use by clients of libcpp. */
|
store_comment (pfile, token);
|
store_comment (pfile, token);
|
}
|
}
|
|
|
/* Allocate COUNT tokens for RUN. */
|
/* Allocate COUNT tokens for RUN. */
|
void
|
void
|
_cpp_init_tokenrun (tokenrun *run, unsigned int count)
|
_cpp_init_tokenrun (tokenrun *run, unsigned int count)
|
{
|
{
|
run->base = XNEWVEC (cpp_token, count);
|
run->base = XNEWVEC (cpp_token, count);
|
run->limit = run->base + count;
|
run->limit = run->base + count;
|
run->next = NULL;
|
run->next = NULL;
|
}
|
}
|
|
|
/* Returns the next tokenrun, or creates one if there is none. */
|
/* Returns the next tokenrun, or creates one if there is none. */
|
static tokenrun *
|
static tokenrun *
|
next_tokenrun (tokenrun *run)
|
next_tokenrun (tokenrun *run)
|
{
|
{
|
if (run->next == NULL)
|
if (run->next == NULL)
|
{
|
{
|
run->next = XNEW (tokenrun);
|
run->next = XNEW (tokenrun);
|
run->next->prev = run;
|
run->next->prev = run;
|
_cpp_init_tokenrun (run->next, 250);
|
_cpp_init_tokenrun (run->next, 250);
|
}
|
}
|
|
|
return run->next;
|
return run->next;
|
}
|
}
|
|
|
/* Look ahead in the input stream. */
|
/* Look ahead in the input stream. */
|
const cpp_token *
|
const cpp_token *
|
cpp_peek_token (cpp_reader *pfile, int index)
|
cpp_peek_token (cpp_reader *pfile, int index)
|
{
|
{
|
cpp_context *context = pfile->context;
|
cpp_context *context = pfile->context;
|
const cpp_token *peektok;
|
const cpp_token *peektok;
|
int count;
|
int count;
|
|
|
/* First, scan through any pending cpp_context objects. */
|
/* First, scan through any pending cpp_context objects. */
|
while (context->prev)
|
while (context->prev)
|
{
|
{
|
ptrdiff_t sz = (context->direct_p
|
ptrdiff_t sz = (context->direct_p
|
? LAST (context).token - FIRST (context).token
|
? LAST (context).token - FIRST (context).token
|
: LAST (context).ptoken - FIRST (context).ptoken);
|
: LAST (context).ptoken - FIRST (context).ptoken);
|
|
|
if (index < (int) sz)
|
if (index < (int) sz)
|
return (context->direct_p
|
return (context->direct_p
|
? FIRST (context).token + index
|
? FIRST (context).token + index
|
: *(FIRST (context).ptoken + index));
|
: *(FIRST (context).ptoken + index));
|
|
|
index -= (int) sz;
|
index -= (int) sz;
|
context = context->prev;
|
context = context->prev;
|
}
|
}
|
|
|
/* We will have to read some new tokens after all (and do so
|
/* We will have to read some new tokens after all (and do so
|
without invalidating preceding tokens). */
|
without invalidating preceding tokens). */
|
count = index;
|
count = index;
|
pfile->keep_tokens++;
|
pfile->keep_tokens++;
|
|
|
do
|
do
|
{
|
{
|
peektok = _cpp_lex_token (pfile);
|
peektok = _cpp_lex_token (pfile);
|
if (peektok->type == CPP_EOF)
|
if (peektok->type == CPP_EOF)
|
return peektok;
|
return peektok;
|
}
|
}
|
while (index--);
|
while (index--);
|
|
|
_cpp_backup_tokens_direct (pfile, count + 1);
|
_cpp_backup_tokens_direct (pfile, count + 1);
|
pfile->keep_tokens--;
|
pfile->keep_tokens--;
|
|
|
return peektok;
|
return peektok;
|
}
|
}
|
|
|
/* Allocate a single token that is invalidated at the same time as the
|
/* Allocate a single token that is invalidated at the same time as the
|
rest of the tokens on the line. Has its line and col set to the
|
rest of the tokens on the line. Has its line and col set to the
|
same as the last lexed token, so that diagnostics appear in the
|
same as the last lexed token, so that diagnostics appear in the
|
right place. */
|
right place. */
|
cpp_token *
|
cpp_token *
|
_cpp_temp_token (cpp_reader *pfile)
|
_cpp_temp_token (cpp_reader *pfile)
|
{
|
{
|
cpp_token *old, *result;
|
cpp_token *old, *result;
|
ptrdiff_t sz = pfile->cur_run->limit - pfile->cur_token;
|
ptrdiff_t sz = pfile->cur_run->limit - pfile->cur_token;
|
ptrdiff_t la = (ptrdiff_t) pfile->lookaheads;
|
ptrdiff_t la = (ptrdiff_t) pfile->lookaheads;
|
|
|
old = pfile->cur_token - 1;
|
old = pfile->cur_token - 1;
|
/* Any pre-existing lookaheads must not be clobbered. */
|
/* Any pre-existing lookaheads must not be clobbered. */
|
if (la)
|
if (la)
|
{
|
{
|
if (sz <= la)
|
if (sz <= la)
|
{
|
{
|
tokenrun *next = next_tokenrun (pfile->cur_run);
|
tokenrun *next = next_tokenrun (pfile->cur_run);
|
|
|
if (sz < la)
|
if (sz < la)
|
memmove (next->base + 1, next->base,
|
memmove (next->base + 1, next->base,
|
(la - sz) * sizeof (cpp_token));
|
(la - sz) * sizeof (cpp_token));
|
|
|
next->base[0] = pfile->cur_run->limit[-1];
|
next->base[0] = pfile->cur_run->limit[-1];
|
}
|
}
|
|
|
if (sz > 1)
|
if (sz > 1)
|
memmove (pfile->cur_token + 1, pfile->cur_token,
|
memmove (pfile->cur_token + 1, pfile->cur_token,
|
MIN (la, sz - 1) * sizeof (cpp_token));
|
MIN (la, sz - 1) * sizeof (cpp_token));
|
}
|
}
|
|
|
if (!sz && pfile->cur_token == pfile->cur_run->limit)
|
if (!sz && pfile->cur_token == pfile->cur_run->limit)
|
{
|
{
|
pfile->cur_run = next_tokenrun (pfile->cur_run);
|
pfile->cur_run = next_tokenrun (pfile->cur_run);
|
pfile->cur_token = pfile->cur_run->base;
|
pfile->cur_token = pfile->cur_run->base;
|
}
|
}
|
|
|
result = pfile->cur_token++;
|
result = pfile->cur_token++;
|
result->src_loc = old->src_loc;
|
result->src_loc = old->src_loc;
|
return result;
|
return result;
|
}
|
}
|
|
|
/* Lex a token into RESULT (external interface). Takes care of issues
|
/* Lex a token into RESULT (external interface). Takes care of issues
|
like directive handling, token lookahead, multiple include
|
like directive handling, token lookahead, multiple include
|
optimization and skipping. */
|
optimization and skipping. */
|
const cpp_token *
|
const cpp_token *
|
_cpp_lex_token (cpp_reader *pfile)
|
_cpp_lex_token (cpp_reader *pfile)
|
{
|
{
|
cpp_token *result;
|
cpp_token *result;
|
|
|
for (;;)
|
for (;;)
|
{
|
{
|
if (pfile->cur_token == pfile->cur_run->limit)
|
if (pfile->cur_token == pfile->cur_run->limit)
|
{
|
{
|
pfile->cur_run = next_tokenrun (pfile->cur_run);
|
pfile->cur_run = next_tokenrun (pfile->cur_run);
|
pfile->cur_token = pfile->cur_run->base;
|
pfile->cur_token = pfile->cur_run->base;
|
}
|
}
|
/* We assume that the current token is somewhere in the current
|
/* We assume that the current token is somewhere in the current
|
run. */
|
run. */
|
if (pfile->cur_token < pfile->cur_run->base
|
if (pfile->cur_token < pfile->cur_run->base
|
|| pfile->cur_token >= pfile->cur_run->limit)
|
|| pfile->cur_token >= pfile->cur_run->limit)
|
abort ();
|
abort ();
|
|
|
if (pfile->lookaheads)
|
if (pfile->lookaheads)
|
{
|
{
|
pfile->lookaheads--;
|
pfile->lookaheads--;
|
result = pfile->cur_token++;
|
result = pfile->cur_token++;
|
}
|
}
|
else
|
else
|
result = _cpp_lex_direct (pfile);
|
result = _cpp_lex_direct (pfile);
|
|
|
if (result->flags & BOL)
|
if (result->flags & BOL)
|
{
|
{
|
/* Is this a directive. If _cpp_handle_directive returns
|
/* Is this a directive. If _cpp_handle_directive returns
|
false, it is an assembler #. */
|
false, it is an assembler #. */
|
if (result->type == CPP_HASH
|
if (result->type == CPP_HASH
|
/* 6.10.3 p 11: Directives in a list of macro arguments
|
/* 6.10.3 p 11: Directives in a list of macro arguments
|
gives undefined behavior. This implementation
|
gives undefined behavior. This implementation
|
handles the directive as normal. */
|
handles the directive as normal. */
|
&& pfile->state.parsing_args != 1)
|
&& pfile->state.parsing_args != 1)
|
{
|
{
|
if (_cpp_handle_directive (pfile, result->flags & PREV_WHITE))
|
if (_cpp_handle_directive (pfile, result->flags & PREV_WHITE))
|
{
|
{
|
if (pfile->directive_result.type == CPP_PADDING)
|
if (pfile->directive_result.type == CPP_PADDING)
|
continue;
|
continue;
|
result = &pfile->directive_result;
|
result = &pfile->directive_result;
|
}
|
}
|
}
|
}
|
else if (pfile->state.in_deferred_pragma)
|
else if (pfile->state.in_deferred_pragma)
|
result = &pfile->directive_result;
|
result = &pfile->directive_result;
|
|
|
if (pfile->cb.line_change && !pfile->state.skipping)
|
if (pfile->cb.line_change && !pfile->state.skipping)
|
pfile->cb.line_change (pfile, result, pfile->state.parsing_args);
|
pfile->cb.line_change (pfile, result, pfile->state.parsing_args);
|
}
|
}
|
|
|
/* We don't skip tokens in directives. */
|
/* We don't skip tokens in directives. */
|
if (pfile->state.in_directive || pfile->state.in_deferred_pragma)
|
if (pfile->state.in_directive || pfile->state.in_deferred_pragma)
|
break;
|
break;
|
|
|
/* Outside a directive, invalidate controlling macros. At file
|
/* Outside a directive, invalidate controlling macros. At file
|
EOF, _cpp_lex_direct takes care of popping the buffer, so we never
|
EOF, _cpp_lex_direct takes care of popping the buffer, so we never
|
get here and MI optimization works. */
|
get here and MI optimization works. */
|
pfile->mi_valid = false;
|
pfile->mi_valid = false;
|
|
|
if (!pfile->state.skipping || result->type == CPP_EOF)
|
if (!pfile->state.skipping || result->type == CPP_EOF)
|
break;
|
break;
|
}
|
}
|
|
|
return result;
|
return result;
|
}
|
}
|
|
|
/* Returns true if a fresh line has been loaded. */
|
/* Returns true if a fresh line has been loaded. */
|
bool
|
bool
|
_cpp_get_fresh_line (cpp_reader *pfile)
|
_cpp_get_fresh_line (cpp_reader *pfile)
|
{
|
{
|
int return_at_eof;
|
int return_at_eof;
|
|
|
/* We can't get a new line until we leave the current directive. */
|
/* We can't get a new line until we leave the current directive. */
|
if (pfile->state.in_directive)
|
if (pfile->state.in_directive)
|
return false;
|
return false;
|
|
|
for (;;)
|
for (;;)
|
{
|
{
|
cpp_buffer *buffer = pfile->buffer;
|
cpp_buffer *buffer = pfile->buffer;
|
|
|
if (!buffer->need_line)
|
if (!buffer->need_line)
|
return true;
|
return true;
|
|
|
if (buffer->next_line < buffer->rlimit)
|
if (buffer->next_line < buffer->rlimit)
|
{
|
{
|
_cpp_clean_line (pfile);
|
_cpp_clean_line (pfile);
|
return true;
|
return true;
|
}
|
}
|
|
|
/* First, get out of parsing arguments state. */
|
/* First, get out of parsing arguments state. */
|
if (pfile->state.parsing_args)
|
if (pfile->state.parsing_args)
|
return false;
|
return false;
|
|
|
/* End of buffer. Non-empty files should end in a newline. */
|
/* End of buffer. Non-empty files should end in a newline. */
|
if (buffer->buf != buffer->rlimit
|
if (buffer->buf != buffer->rlimit
|
&& buffer->next_line > buffer->rlimit
|
&& buffer->next_line > buffer->rlimit
|
&& !buffer->from_stage3)
|
&& !buffer->from_stage3)
|
{
|
{
|
/* Clip to buffer size. */
|
/* Clip to buffer size. */
|
buffer->next_line = buffer->rlimit;
|
buffer->next_line = buffer->rlimit;
|
}
|
}
|
|
|
return_at_eof = buffer->return_at_eof;
|
return_at_eof = buffer->return_at_eof;
|
_cpp_pop_buffer (pfile);
|
_cpp_pop_buffer (pfile);
|
if (pfile->buffer == NULL || return_at_eof)
|
if (pfile->buffer == NULL || return_at_eof)
|
return false;
|
return false;
|
}
|
}
|
}
|
}
|
|
|
#define IF_NEXT_IS(CHAR, THEN_TYPE, ELSE_TYPE) \
|
#define IF_NEXT_IS(CHAR, THEN_TYPE, ELSE_TYPE) \
|
do \
|
do \
|
{ \
|
{ \
|
result->type = ELSE_TYPE; \
|
result->type = ELSE_TYPE; \
|
if (*buffer->cur == CHAR) \
|
if (*buffer->cur == CHAR) \
|
buffer->cur++, result->type = THEN_TYPE; \
|
buffer->cur++, result->type = THEN_TYPE; \
|
} \
|
} \
|
while (0)
|
while (0)
|
|
|
/* Lex a token into pfile->cur_token, which is also incremented, to
|
/* Lex a token into pfile->cur_token, which is also incremented, to
|
get diagnostics pointing to the correct location.
|
get diagnostics pointing to the correct location.
|
|
|
Does not handle issues such as token lookahead, multiple-include
|
Does not handle issues such as token lookahead, multiple-include
|
optimization, directives, skipping etc. This function is only
|
optimization, directives, skipping etc. This function is only
|
suitable for use by _cpp_lex_token, and in special cases like
|
suitable for use by _cpp_lex_token, and in special cases like
|
lex_expansion_token which doesn't care for any of these issues.
|
lex_expansion_token which doesn't care for any of these issues.
|
|
|
When meeting a newline, returns CPP_EOF if parsing a directive,
|
When meeting a newline, returns CPP_EOF if parsing a directive,
|
otherwise returns to the start of the token buffer if permissible.
|
otherwise returns to the start of the token buffer if permissible.
|
Returns the location of the lexed token. */
|
Returns the location of the lexed token. */
|
cpp_token *
|
cpp_token *
|
_cpp_lex_direct (cpp_reader *pfile)
|
_cpp_lex_direct (cpp_reader *pfile)
|
{
|
{
|
cppchar_t c;
|
cppchar_t c;
|
cpp_buffer *buffer;
|
cpp_buffer *buffer;
|
const unsigned char *comment_start;
|
const unsigned char *comment_start;
|
cpp_token *result = pfile->cur_token++;
|
cpp_token *result = pfile->cur_token++;
|
|
|
fresh_line:
|
fresh_line:
|
result->flags = 0;
|
result->flags = 0;
|
buffer = pfile->buffer;
|
buffer = pfile->buffer;
|
if (buffer->need_line)
|
if (buffer->need_line)
|
{
|
{
|
if (pfile->state.in_deferred_pragma)
|
if (pfile->state.in_deferred_pragma)
|
{
|
{
|
result->type = CPP_PRAGMA_EOL;
|
result->type = CPP_PRAGMA_EOL;
|
pfile->state.in_deferred_pragma = false;
|
pfile->state.in_deferred_pragma = false;
|
if (!pfile->state.pragma_allow_expansion)
|
if (!pfile->state.pragma_allow_expansion)
|
pfile->state.prevent_expansion--;
|
pfile->state.prevent_expansion--;
|
return result;
|
return result;
|
}
|
}
|
if (!_cpp_get_fresh_line (pfile))
|
if (!_cpp_get_fresh_line (pfile))
|
{
|
{
|
result->type = CPP_EOF;
|
result->type = CPP_EOF;
|
if (!pfile->state.in_directive)
|
if (!pfile->state.in_directive)
|
{
|
{
|
/* Tell the compiler the line number of the EOF token. */
|
/* Tell the compiler the line number of the EOF token. */
|
result->src_loc = pfile->line_table->highest_line;
|
result->src_loc = pfile->line_table->highest_line;
|
result->flags = BOL;
|
result->flags = BOL;
|
}
|
}
|
return result;
|
return result;
|
}
|
}
|
if (!pfile->keep_tokens)
|
if (!pfile->keep_tokens)
|
{
|
{
|
pfile->cur_run = &pfile->base_run;
|
pfile->cur_run = &pfile->base_run;
|
result = pfile->base_run.base;
|
result = pfile->base_run.base;
|
pfile->cur_token = result + 1;
|
pfile->cur_token = result + 1;
|
}
|
}
|
result->flags = BOL;
|
result->flags = BOL;
|
if (pfile->state.parsing_args == 2)
|
if (pfile->state.parsing_args == 2)
|
result->flags |= PREV_WHITE;
|
result->flags |= PREV_WHITE;
|
}
|
}
|
buffer = pfile->buffer;
|
buffer = pfile->buffer;
|
update_tokens_line:
|
update_tokens_line:
|
result->src_loc = pfile->line_table->highest_line;
|
result->src_loc = pfile->line_table->highest_line;
|
|
|
skipped_white:
|
skipped_white:
|
if (buffer->cur >= buffer->notes[buffer->cur_note].pos
|
if (buffer->cur >= buffer->notes[buffer->cur_note].pos
|
&& !pfile->overlaid_buffer)
|
&& !pfile->overlaid_buffer)
|
{
|
{
|
_cpp_process_line_notes (pfile, false);
|
_cpp_process_line_notes (pfile, false);
|
result->src_loc = pfile->line_table->highest_line;
|
result->src_loc = pfile->line_table->highest_line;
|
}
|
}
|
c = *buffer->cur++;
|
c = *buffer->cur++;
|
|
|
LINEMAP_POSITION_FOR_COLUMN (result->src_loc, pfile->line_table,
|
LINEMAP_POSITION_FOR_COLUMN (result->src_loc, pfile->line_table,
|
CPP_BUF_COLUMN (buffer, buffer->cur));
|
CPP_BUF_COLUMN (buffer, buffer->cur));
|
|
|
switch (c)
|
switch (c)
|
{
|
{
|
case ' ': case '\t': case '\f': case '\v': case '\0':
|
case ' ': case '\t': case '\f': case '\v': case '\0':
|
result->flags |= PREV_WHITE;
|
result->flags |= PREV_WHITE;
|
skip_whitespace (pfile, c);
|
skip_whitespace (pfile, c);
|
goto skipped_white;
|
goto skipped_white;
|
|
|
case '\n':
|
case '\n':
|
if (buffer->cur < buffer->rlimit)
|
if (buffer->cur < buffer->rlimit)
|
CPP_INCREMENT_LINE (pfile, 0);
|
CPP_INCREMENT_LINE (pfile, 0);
|
buffer->need_line = true;
|
buffer->need_line = true;
|
goto fresh_line;
|
goto fresh_line;
|
|
|
case '0': case '1': case '2': case '3': case '4':
|
case '0': case '1': case '2': case '3': case '4':
|
case '5': case '6': case '7': case '8': case '9':
|
case '5': case '6': case '7': case '8': case '9':
|
{
|
{
|
struct normalize_state nst = INITIAL_NORMALIZE_STATE;
|
struct normalize_state nst = INITIAL_NORMALIZE_STATE;
|
result->type = CPP_NUMBER;
|
result->type = CPP_NUMBER;
|
lex_number (pfile, &result->val.str, &nst);
|
lex_number (pfile, &result->val.str, &nst);
|
warn_about_normalization (pfile, result, &nst);
|
warn_about_normalization (pfile, result, &nst);
|
break;
|
break;
|
}
|
}
|
|
|
case 'L':
|
case 'L':
|
case 'u':
|
case 'u':
|
case 'U':
|
case 'U':
|
case 'R':
|
case 'R':
|
/* 'L', 'u', 'U', 'u8' or 'R' may introduce wide characters,
|
/* 'L', 'u', 'U', 'u8' or 'R' may introduce wide characters,
|
wide strings or raw strings. */
|
wide strings or raw strings. */
|
if (c == 'L' || CPP_OPTION (pfile, uliterals))
|
if (c == 'L' || CPP_OPTION (pfile, uliterals))
|
{
|
{
|
if ((*buffer->cur == '\'' && c != 'R')
|
if ((*buffer->cur == '\'' && c != 'R')
|
|| *buffer->cur == '"'
|
|| *buffer->cur == '"'
|
|| (*buffer->cur == 'R'
|
|| (*buffer->cur == 'R'
|
&& c != 'R'
|
&& c != 'R'
|
&& buffer->cur[1] == '"'
|
&& buffer->cur[1] == '"'
|
&& CPP_OPTION (pfile, uliterals))
|
&& CPP_OPTION (pfile, uliterals))
|
|| (*buffer->cur == '8'
|
|| (*buffer->cur == '8'
|
&& c == 'u'
|
&& c == 'u'
|
&& (buffer->cur[1] == '"'
|
&& (buffer->cur[1] == '"'
|
|| (buffer->cur[1] == 'R' && buffer->cur[2] == '"'))))
|
|| (buffer->cur[1] == 'R' && buffer->cur[2] == '"'))))
|
{
|
{
|
lex_string (pfile, result, buffer->cur - 1);
|
lex_string (pfile, result, buffer->cur - 1);
|
break;
|
break;
|
}
|
}
|
}
|
}
|
/* Fall through. */
|
/* Fall through. */
|
|
|
case '_':
|
case '_':
|
case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
|
case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
|
case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
|
case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
|
case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
|
case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
|
case 's': case 't': case 'v': case 'w': case 'x':
|
case 's': case 't': case 'v': case 'w': case 'x':
|
case 'y': case 'z':
|
case 'y': case 'z':
|
case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
|
case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
|
case 'G': case 'H': case 'I': case 'J': case 'K':
|
case 'G': case 'H': case 'I': case 'J': case 'K':
|
case 'M': case 'N': case 'O': case 'P': case 'Q':
|
case 'M': case 'N': case 'O': case 'P': case 'Q':
|
case 'S': case 'T': case 'V': case 'W': case 'X':
|
case 'S': case 'T': case 'V': case 'W': case 'X':
|
case 'Y': case 'Z':
|
case 'Y': case 'Z':
|
result->type = CPP_NAME;
|
result->type = CPP_NAME;
|
{
|
{
|
struct normalize_state nst = INITIAL_NORMALIZE_STATE;
|
struct normalize_state nst = INITIAL_NORMALIZE_STATE;
|
result->val.node.node = lex_identifier (pfile, buffer->cur - 1, false,
|
result->val.node.node = lex_identifier (pfile, buffer->cur - 1, false,
|
&nst);
|
&nst);
|
warn_about_normalization (pfile, result, &nst);
|
warn_about_normalization (pfile, result, &nst);
|
}
|
}
|
|
|
/* Convert named operators to their proper types. */
|
/* Convert named operators to their proper types. */
|
if (result->val.node.node->flags & NODE_OPERATOR)
|
if (result->val.node.node->flags & NODE_OPERATOR)
|
{
|
{
|
result->flags |= NAMED_OP;
|
result->flags |= NAMED_OP;
|
result->type = (enum cpp_ttype) result->val.node.node->directive_index;
|
result->type = (enum cpp_ttype) result->val.node.node->directive_index;
|
}
|
}
|
break;
|
break;
|
|
|
case '\'':
|
case '\'':
|
case '"':
|
case '"':
|
lex_string (pfile, result, buffer->cur - 1);
|
lex_string (pfile, result, buffer->cur - 1);
|
break;
|
break;
|
|
|
case '/':
|
case '/':
|
/* A potential block or line comment. */
|
/* A potential block or line comment. */
|
comment_start = buffer->cur;
|
comment_start = buffer->cur;
|
c = *buffer->cur;
|
c = *buffer->cur;
|
|
|
if (c == '*')
|
if (c == '*')
|
{
|
{
|
if (_cpp_skip_block_comment (pfile))
|
if (_cpp_skip_block_comment (pfile))
|
cpp_error (pfile, CPP_DL_ERROR, "unterminated comment");
|
cpp_error (pfile, CPP_DL_ERROR, "unterminated comment");
|
}
|
}
|
else if (c == '/' && (CPP_OPTION (pfile, cplusplus_comments)
|
else if (c == '/' && (CPP_OPTION (pfile, cplusplus_comments)
|
|| cpp_in_system_header (pfile)))
|
|| cpp_in_system_header (pfile)))
|
{
|
{
|
/* Warn about comments only if pedantically GNUC89, and not
|
/* Warn about comments only if pedantically GNUC89, and not
|
in system headers. */
|
in system headers. */
|
if (CPP_OPTION (pfile, lang) == CLK_GNUC89 && CPP_PEDANTIC (pfile)
|
if (CPP_OPTION (pfile, lang) == CLK_GNUC89 && CPP_PEDANTIC (pfile)
|
&& ! buffer->warned_cplusplus_comments)
|
&& ! buffer->warned_cplusplus_comments)
|
{
|
{
|
cpp_error (pfile, CPP_DL_PEDWARN,
|
cpp_error (pfile, CPP_DL_PEDWARN,
|
"C++ style comments are not allowed in ISO C90");
|
"C++ style comments are not allowed in ISO C90");
|
cpp_error (pfile, CPP_DL_PEDWARN,
|
cpp_error (pfile, CPP_DL_PEDWARN,
|
"(this will be reported only once per input file)");
|
"(this will be reported only once per input file)");
|
buffer->warned_cplusplus_comments = 1;
|
buffer->warned_cplusplus_comments = 1;
|
}
|
}
|
|
|
if (skip_line_comment (pfile) && CPP_OPTION (pfile, warn_comments))
|
if (skip_line_comment (pfile) && CPP_OPTION (pfile, warn_comments))
|
cpp_error (pfile, CPP_DL_WARNING, "multi-line comment");
|
cpp_error (pfile, CPP_DL_WARNING, "multi-line comment");
|
}
|
}
|
else if (c == '=')
|
else if (c == '=')
|
{
|
{
|
buffer->cur++;
|
buffer->cur++;
|
result->type = CPP_DIV_EQ;
|
result->type = CPP_DIV_EQ;
|
break;
|
break;
|
}
|
}
|
else
|
else
|
{
|
{
|
result->type = CPP_DIV;
|
result->type = CPP_DIV;
|
break;
|
break;
|
}
|
}
|
|
|
if (!pfile->state.save_comments)
|
if (!pfile->state.save_comments)
|
{
|
{
|
result->flags |= PREV_WHITE;
|
result->flags |= PREV_WHITE;
|
goto update_tokens_line;
|
goto update_tokens_line;
|
}
|
}
|
|
|
/* Save the comment as a token in its own right. */
|
/* Save the comment as a token in its own right. */
|
save_comment (pfile, result, comment_start, c);
|
save_comment (pfile, result, comment_start, c);
|
break;
|
break;
|
|
|
case '<':
|
case '<':
|
if (pfile->state.angled_headers)
|
if (pfile->state.angled_headers)
|
{
|
{
|
lex_string (pfile, result, buffer->cur - 1);
|
lex_string (pfile, result, buffer->cur - 1);
|
if (result->type != CPP_LESS)
|
if (result->type != CPP_LESS)
|
break;
|
break;
|
}
|
}
|
|
|
result->type = CPP_LESS;
|
result->type = CPP_LESS;
|
if (*buffer->cur == '=')
|
if (*buffer->cur == '=')
|
buffer->cur++, result->type = CPP_LESS_EQ;
|
buffer->cur++, result->type = CPP_LESS_EQ;
|
else if (*buffer->cur == '<')
|
else if (*buffer->cur == '<')
|
{
|
{
|
buffer->cur++;
|
buffer->cur++;
|
IF_NEXT_IS ('=', CPP_LSHIFT_EQ, CPP_LSHIFT);
|
IF_NEXT_IS ('=', CPP_LSHIFT_EQ, CPP_LSHIFT);
|
}
|
}
|
else if (CPP_OPTION (pfile, digraphs))
|
else if (CPP_OPTION (pfile, digraphs))
|
{
|
{
|
if (*buffer->cur == ':')
|
if (*buffer->cur == ':')
|
{
|
{
|
buffer->cur++;
|
buffer->cur++;
|
result->flags |= DIGRAPH;
|
result->flags |= DIGRAPH;
|
result->type = CPP_OPEN_SQUARE;
|
result->type = CPP_OPEN_SQUARE;
|
}
|
}
|
else if (*buffer->cur == '%')
|
else if (*buffer->cur == '%')
|
{
|
{
|
buffer->cur++;
|
buffer->cur++;
|
result->flags |= DIGRAPH;
|
result->flags |= DIGRAPH;
|
result->type = CPP_OPEN_BRACE;
|
result->type = CPP_OPEN_BRACE;
|
}
|
}
|
}
|
}
|
break;
|
break;
|
|
|
case '>':
|
case '>':
|
result->type = CPP_GREATER;
|
result->type = CPP_GREATER;
|
if (*buffer->cur == '=')
|
if (*buffer->cur == '=')
|
buffer->cur++, result->type = CPP_GREATER_EQ;
|
buffer->cur++, result->type = CPP_GREATER_EQ;
|
else if (*buffer->cur == '>')
|
else if (*buffer->cur == '>')
|
{
|
{
|
buffer->cur++;
|
buffer->cur++;
|
IF_NEXT_IS ('=', CPP_RSHIFT_EQ, CPP_RSHIFT);
|
IF_NEXT_IS ('=', CPP_RSHIFT_EQ, CPP_RSHIFT);
|
}
|
}
|
break;
|
break;
|
|
|
case '%':
|
case '%':
|
result->type = CPP_MOD;
|
result->type = CPP_MOD;
|
if (*buffer->cur == '=')
|
if (*buffer->cur == '=')
|
buffer->cur++, result->type = CPP_MOD_EQ;
|
buffer->cur++, result->type = CPP_MOD_EQ;
|
else if (CPP_OPTION (pfile, digraphs))
|
else if (CPP_OPTION (pfile, digraphs))
|
{
|
{
|
if (*buffer->cur == ':')
|
if (*buffer->cur == ':')
|
{
|
{
|
buffer->cur++;
|
buffer->cur++;
|
result->flags |= DIGRAPH;
|
result->flags |= DIGRAPH;
|
result->type = CPP_HASH;
|
result->type = CPP_HASH;
|
if (*buffer->cur == '%' && buffer->cur[1] == ':')
|
if (*buffer->cur == '%' && buffer->cur[1] == ':')
|
buffer->cur += 2, result->type = CPP_PASTE, result->val.token_no = 0;
|
buffer->cur += 2, result->type = CPP_PASTE, result->val.token_no = 0;
|
}
|
}
|
else if (*buffer->cur == '>')
|
else if (*buffer->cur == '>')
|
{
|
{
|
buffer->cur++;
|
buffer->cur++;
|
result->flags |= DIGRAPH;
|
result->flags |= DIGRAPH;
|
result->type = CPP_CLOSE_BRACE;
|
result->type = CPP_CLOSE_BRACE;
|
}
|
}
|
}
|
}
|
break;
|
break;
|
|
|
case '.':
|
case '.':
|
result->type = CPP_DOT;
|
result->type = CPP_DOT;
|
if (ISDIGIT (*buffer->cur))
|
if (ISDIGIT (*buffer->cur))
|
{
|
{
|
struct normalize_state nst = INITIAL_NORMALIZE_STATE;
|
struct normalize_state nst = INITIAL_NORMALIZE_STATE;
|
result->type = CPP_NUMBER;
|
result->type = CPP_NUMBER;
|
lex_number (pfile, &result->val.str, &nst);
|
lex_number (pfile, &result->val.str, &nst);
|
warn_about_normalization (pfile, result, &nst);
|
warn_about_normalization (pfile, result, &nst);
|
}
|
}
|
else if (*buffer->cur == '.' && buffer->cur[1] == '.')
|
else if (*buffer->cur == '.' && buffer->cur[1] == '.')
|
buffer->cur += 2, result->type = CPP_ELLIPSIS;
|
buffer->cur += 2, result->type = CPP_ELLIPSIS;
|
else if (*buffer->cur == '*' && CPP_OPTION (pfile, cplusplus))
|
else if (*buffer->cur == '*' && CPP_OPTION (pfile, cplusplus))
|
buffer->cur++, result->type = CPP_DOT_STAR;
|
buffer->cur++, result->type = CPP_DOT_STAR;
|
break;
|
break;
|
|
|
case '+':
|
case '+':
|
result->type = CPP_PLUS;
|
result->type = CPP_PLUS;
|
if (*buffer->cur == '+')
|
if (*buffer->cur == '+')
|
buffer->cur++, result->type = CPP_PLUS_PLUS;
|
buffer->cur++, result->type = CPP_PLUS_PLUS;
|
else if (*buffer->cur == '=')
|
else if (*buffer->cur == '=')
|
buffer->cur++, result->type = CPP_PLUS_EQ;
|
buffer->cur++, result->type = CPP_PLUS_EQ;
|
break;
|
break;
|
|
|
case '-':
|
case '-':
|
result->type = CPP_MINUS;
|
result->type = CPP_MINUS;
|
if (*buffer->cur == '>')
|
if (*buffer->cur == '>')
|
{
|
{
|
buffer->cur++;
|
buffer->cur++;
|
result->type = CPP_DEREF;
|
result->type = CPP_DEREF;
|
if (*buffer->cur == '*' && CPP_OPTION (pfile, cplusplus))
|
if (*buffer->cur == '*' && CPP_OPTION (pfile, cplusplus))
|
buffer->cur++, result->type = CPP_DEREF_STAR;
|
buffer->cur++, result->type = CPP_DEREF_STAR;
|
}
|
}
|
else if (*buffer->cur == '-')
|
else if (*buffer->cur == '-')
|
buffer->cur++, result->type = CPP_MINUS_MINUS;
|
buffer->cur++, result->type = CPP_MINUS_MINUS;
|
else if (*buffer->cur == '=')
|
else if (*buffer->cur == '=')
|
buffer->cur++, result->type = CPP_MINUS_EQ;
|
buffer->cur++, result->type = CPP_MINUS_EQ;
|
break;
|
break;
|
|
|
case '&':
|
case '&':
|
result->type = CPP_AND;
|
result->type = CPP_AND;
|
if (*buffer->cur == '&')
|
if (*buffer->cur == '&')
|
buffer->cur++, result->type = CPP_AND_AND;
|
buffer->cur++, result->type = CPP_AND_AND;
|
else if (*buffer->cur == '=')
|
else if (*buffer->cur == '=')
|
buffer->cur++, result->type = CPP_AND_EQ;
|
buffer->cur++, result->type = CPP_AND_EQ;
|
break;
|
break;
|
|
|
case '|':
|
case '|':
|
result->type = CPP_OR;
|
result->type = CPP_OR;
|
if (*buffer->cur == '|')
|
if (*buffer->cur == '|')
|
buffer->cur++, result->type = CPP_OR_OR;
|
buffer->cur++, result->type = CPP_OR_OR;
|
else if (*buffer->cur == '=')
|
else if (*buffer->cur == '=')
|
buffer->cur++, result->type = CPP_OR_EQ;
|
buffer->cur++, result->type = CPP_OR_EQ;
|
break;
|
break;
|
|
|
case ':':
|
case ':':
|
result->type = CPP_COLON;
|
result->type = CPP_COLON;
|
if (*buffer->cur == ':' && CPP_OPTION (pfile, cplusplus))
|
if (*buffer->cur == ':' && CPP_OPTION (pfile, cplusplus))
|
buffer->cur++, result->type = CPP_SCOPE;
|
buffer->cur++, result->type = CPP_SCOPE;
|
else if (*buffer->cur == '>' && CPP_OPTION (pfile, digraphs))
|
else if (*buffer->cur == '>' && CPP_OPTION (pfile, digraphs))
|
{
|
{
|
buffer->cur++;
|
buffer->cur++;
|
result->flags |= DIGRAPH;
|
result->flags |= DIGRAPH;
|
result->type = CPP_CLOSE_SQUARE;
|
result->type = CPP_CLOSE_SQUARE;
|
}
|
}
|
break;
|
break;
|
|
|
case '*': IF_NEXT_IS ('=', CPP_MULT_EQ, CPP_MULT); break;
|
case '*': IF_NEXT_IS ('=', CPP_MULT_EQ, CPP_MULT); break;
|
case '=': IF_NEXT_IS ('=', CPP_EQ_EQ, CPP_EQ); break;
|
case '=': IF_NEXT_IS ('=', CPP_EQ_EQ, CPP_EQ); break;
|
case '!': IF_NEXT_IS ('=', CPP_NOT_EQ, CPP_NOT); break;
|
case '!': IF_NEXT_IS ('=', CPP_NOT_EQ, CPP_NOT); break;
|
case '^': IF_NEXT_IS ('=', CPP_XOR_EQ, CPP_XOR); break;
|
case '^': IF_NEXT_IS ('=', CPP_XOR_EQ, CPP_XOR); break;
|
case '#': IF_NEXT_IS ('#', CPP_PASTE, CPP_HASH); result->val.token_no = 0; break;
|
case '#': IF_NEXT_IS ('#', CPP_PASTE, CPP_HASH); result->val.token_no = 0; break;
|
|
|
case '?': result->type = CPP_QUERY; break;
|
case '?': result->type = CPP_QUERY; break;
|
case '~': result->type = CPP_COMPL; break;
|
case '~': result->type = CPP_COMPL; break;
|
case ',': result->type = CPP_COMMA; break;
|
case ',': result->type = CPP_COMMA; break;
|
case '(': result->type = CPP_OPEN_PAREN; break;
|
case '(': result->type = CPP_OPEN_PAREN; break;
|
case ')': result->type = CPP_CLOSE_PAREN; break;
|
case ')': result->type = CPP_CLOSE_PAREN; break;
|
case '[': result->type = CPP_OPEN_SQUARE; break;
|
case '[': result->type = CPP_OPEN_SQUARE; break;
|
case ']': result->type = CPP_CLOSE_SQUARE; break;
|
case ']': result->type = CPP_CLOSE_SQUARE; break;
|
case '{': result->type = CPP_OPEN_BRACE; break;
|
case '{': result->type = CPP_OPEN_BRACE; break;
|
case '}': result->type = CPP_CLOSE_BRACE; break;
|
case '}': result->type = CPP_CLOSE_BRACE; break;
|
case ';': result->type = CPP_SEMICOLON; break;
|
case ';': result->type = CPP_SEMICOLON; break;
|
|
|
/* @ is a punctuator in Objective-C. */
|
/* @ is a punctuator in Objective-C. */
|
case '@': result->type = CPP_ATSIGN; break;
|
case '@': result->type = CPP_ATSIGN; break;
|
|
|
case '$':
|
case '$':
|
case '\\':
|
case '\\':
|
{
|
{
|
const uchar *base = --buffer->cur;
|
const uchar *base = --buffer->cur;
|
struct normalize_state nst = INITIAL_NORMALIZE_STATE;
|
struct normalize_state nst = INITIAL_NORMALIZE_STATE;
|
|
|
if (forms_identifier_p (pfile, true, &nst))
|
if (forms_identifier_p (pfile, true, &nst))
|
{
|
{
|
result->type = CPP_NAME;
|
result->type = CPP_NAME;
|
result->val.node.node = lex_identifier (pfile, base, true, &nst);
|
result->val.node.node = lex_identifier (pfile, base, true, &nst);
|
warn_about_normalization (pfile, result, &nst);
|
warn_about_normalization (pfile, result, &nst);
|
break;
|
break;
|
}
|
}
|
buffer->cur++;
|
buffer->cur++;
|
}
|
}
|
|
|
default:
|
default:
|
create_literal (pfile, result, buffer->cur - 1, 1, CPP_OTHER);
|
create_literal (pfile, result, buffer->cur - 1, 1, CPP_OTHER);
|
break;
|
break;
|
}
|
}
|
|
|
return result;
|
return result;
|
}
|
}
|
|
|
/* An upper bound on the number of bytes needed to spell TOKEN.
|
/* An upper bound on the number of bytes needed to spell TOKEN.
|
Does not include preceding whitespace. */
|
Does not include preceding whitespace. */
|
unsigned int
|
unsigned int
|
cpp_token_len (const cpp_token *token)
|
cpp_token_len (const cpp_token *token)
|
{
|
{
|
unsigned int len;
|
unsigned int len;
|
|
|
switch (TOKEN_SPELL (token))
|
switch (TOKEN_SPELL (token))
|
{
|
{
|
default: len = 6; break;
|
default: len = 6; break;
|
case SPELL_LITERAL: len = token->val.str.len; break;
|
case SPELL_LITERAL: len = token->val.str.len; break;
|
case SPELL_IDENT: len = NODE_LEN (token->val.node.node) * 10; break;
|
case SPELL_IDENT: len = NODE_LEN (token->val.node.node) * 10; break;
|
}
|
}
|
|
|
return len;
|
return len;
|
}
|
}
|
|
|
/* Parse UTF-8 out of NAMEP and place a \U escape in BUFFER.
|
/* Parse UTF-8 out of NAMEP and place a \U escape in BUFFER.
|
Return the number of bytes read out of NAME. (There are always
|
Return the number of bytes read out of NAME. (There are always
|
10 bytes written to BUFFER.) */
|
10 bytes written to BUFFER.) */
|
|
|
static size_t
|
static size_t
|
utf8_to_ucn (unsigned char *buffer, const unsigned char *name)
|
utf8_to_ucn (unsigned char *buffer, const unsigned char *name)
|
{
|
{
|
int j;
|
int j;
|
int ucn_len = 0;
|
int ucn_len = 0;
|
int ucn_len_c;
|
int ucn_len_c;
|
unsigned t;
|
unsigned t;
|
unsigned long utf32;
|
unsigned long utf32;
|
|
|
/* Compute the length of the UTF-8 sequence. */
|
/* Compute the length of the UTF-8 sequence. */
|
for (t = *name; t & 0x80; t <<= 1)
|
for (t = *name; t & 0x80; t <<= 1)
|
ucn_len++;
|
ucn_len++;
|
|
|
utf32 = *name & (0x7F >> ucn_len);
|
utf32 = *name & (0x7F >> ucn_len);
|
for (ucn_len_c = 1; ucn_len_c < ucn_len; ucn_len_c++)
|
for (ucn_len_c = 1; ucn_len_c < ucn_len; ucn_len_c++)
|
{
|
{
|
utf32 = (utf32 << 6) | (*++name & 0x3F);
|
utf32 = (utf32 << 6) | (*++name & 0x3F);
|
|
|
/* Ill-formed UTF-8. */
|
/* Ill-formed UTF-8. */
|
if ((*name & ~0x3F) != 0x80)
|
if ((*name & ~0x3F) != 0x80)
|
abort ();
|
abort ();
|
}
|
}
|
|
|
*buffer++ = '\\';
|
*buffer++ = '\\';
|
*buffer++ = 'U';
|
*buffer++ = 'U';
|
for (j = 7; j >= 0; j--)
|
for (j = 7; j >= 0; j--)
|
*buffer++ = "0123456789abcdef"[(utf32 >> (4 * j)) & 0xF];
|
*buffer++ = "0123456789abcdef"[(utf32 >> (4 * j)) & 0xF];
|
return ucn_len;
|
return ucn_len;
|
}
|
}
|
|
|
/* Given a token TYPE corresponding to a digraph, return a pointer to
|
/* Given a token TYPE corresponding to a digraph, return a pointer to
|
the spelling of the digraph. */
|
the spelling of the digraph. */
|
static const unsigned char *
|
static const unsigned char *
|
cpp_digraph2name (enum cpp_ttype type)
|
cpp_digraph2name (enum cpp_ttype type)
|
{
|
{
|
return digraph_spellings[(int) type - (int) CPP_FIRST_DIGRAPH];
|
return digraph_spellings[(int) type - (int) CPP_FIRST_DIGRAPH];
|
}
|
}
|
|
|
/* Write the spelling of a token TOKEN to BUFFER. The buffer must
|
/* Write the spelling of a token TOKEN to BUFFER. The buffer must
|
already contain the enough space to hold the token's spelling.
|
already contain the enough space to hold the token's spelling.
|
Returns a pointer to the character after the last character written.
|
Returns a pointer to the character after the last character written.
|
FORSTRING is true if this is to be the spelling after translation
|
FORSTRING is true if this is to be the spelling after translation
|
phase 1 (this is different for UCNs).
|
phase 1 (this is different for UCNs).
|
FIXME: Would be nice if we didn't need the PFILE argument. */
|
FIXME: Would be nice if we didn't need the PFILE argument. */
|
unsigned char *
|
unsigned char *
|
cpp_spell_token (cpp_reader *pfile, const cpp_token *token,
|
cpp_spell_token (cpp_reader *pfile, const cpp_token *token,
|
unsigned char *buffer, bool forstring)
|
unsigned char *buffer, bool forstring)
|
{
|
{
|
switch (TOKEN_SPELL (token))
|
switch (TOKEN_SPELL (token))
|
{
|
{
|
case SPELL_OPERATOR:
|
case SPELL_OPERATOR:
|
{
|
{
|
const unsigned char *spelling;
|
const unsigned char *spelling;
|
unsigned char c;
|
unsigned char c;
|
|
|
if (token->flags & DIGRAPH)
|
if (token->flags & DIGRAPH)
|
spelling = cpp_digraph2name (token->type);
|
spelling = cpp_digraph2name (token->type);
|
else if (token->flags & NAMED_OP)
|
else if (token->flags & NAMED_OP)
|
goto spell_ident;
|
goto spell_ident;
|
else
|
else
|
spelling = TOKEN_NAME (token);
|
spelling = TOKEN_NAME (token);
|
|
|
while ((c = *spelling++) != '\0')
|
while ((c = *spelling++) != '\0')
|
*buffer++ = c;
|
*buffer++ = c;
|
}
|
}
|
break;
|
break;
|
|
|
spell_ident:
|
spell_ident:
|
case SPELL_IDENT:
|
case SPELL_IDENT:
|
if (forstring)
|
if (forstring)
|
{
|
{
|
memcpy (buffer, NODE_NAME (token->val.node.node),
|
memcpy (buffer, NODE_NAME (token->val.node.node),
|
NODE_LEN (token->val.node.node));
|
NODE_LEN (token->val.node.node));
|
buffer += NODE_LEN (token->val.node.node);
|
buffer += NODE_LEN (token->val.node.node);
|
}
|
}
|
else
|
else
|
{
|
{
|
size_t i;
|
size_t i;
|
const unsigned char * name = NODE_NAME (token->val.node.node);
|
const unsigned char * name = NODE_NAME (token->val.node.node);
|
|
|
for (i = 0; i < NODE_LEN (token->val.node.node); i++)
|
for (i = 0; i < NODE_LEN (token->val.node.node); i++)
|
if (name[i] & ~0x7F)
|
if (name[i] & ~0x7F)
|
{
|
{
|
i += utf8_to_ucn (buffer, name + i) - 1;
|
i += utf8_to_ucn (buffer, name + i) - 1;
|
buffer += 10;
|
buffer += 10;
|
}
|
}
|
else
|
else
|
*buffer++ = NODE_NAME (token->val.node.node)[i];
|
*buffer++ = NODE_NAME (token->val.node.node)[i];
|
}
|
}
|
break;
|
break;
|
|
|
case SPELL_LITERAL:
|
case SPELL_LITERAL:
|
memcpy (buffer, token->val.str.text, token->val.str.len);
|
memcpy (buffer, token->val.str.text, token->val.str.len);
|
buffer += token->val.str.len;
|
buffer += token->val.str.len;
|
break;
|
break;
|
|
|
case SPELL_NONE:
|
case SPELL_NONE:
|
cpp_error (pfile, CPP_DL_ICE,
|
cpp_error (pfile, CPP_DL_ICE,
|
"unspellable token %s", TOKEN_NAME (token));
|
"unspellable token %s", TOKEN_NAME (token));
|
break;
|
break;
|
}
|
}
|
|
|
return buffer;
|
return buffer;
|
}
|
}
|
|
|
/* Returns TOKEN spelt as a null-terminated string. The string is
|
/* Returns TOKEN spelt as a null-terminated string. The string is
|
freed when the reader is destroyed. Useful for diagnostics. */
|
freed when the reader is destroyed. Useful for diagnostics. */
|
unsigned char *
|
unsigned char *
|
cpp_token_as_text (cpp_reader *pfile, const cpp_token *token)
|
cpp_token_as_text (cpp_reader *pfile, const cpp_token *token)
|
{
|
{
|
unsigned int len = cpp_token_len (token) + 1;
|
unsigned int len = cpp_token_len (token) + 1;
|
unsigned char *start = _cpp_unaligned_alloc (pfile, len), *end;
|
unsigned char *start = _cpp_unaligned_alloc (pfile, len), *end;
|
|
|
end = cpp_spell_token (pfile, token, start, false);
|
end = cpp_spell_token (pfile, token, start, false);
|
end[0] = '\0';
|
end[0] = '\0';
|
|
|
return start;
|
return start;
|
}
|
}
|
|
|
/* Returns a pointer to a string which spells the token defined by
|
/* Returns a pointer to a string which spells the token defined by
|
TYPE and FLAGS. Used by C front ends, which really should move to
|
TYPE and FLAGS. Used by C front ends, which really should move to
|
using cpp_token_as_text. */
|
using cpp_token_as_text. */
|
const char *
|
const char *
|
cpp_type2name (enum cpp_ttype type, unsigned char flags)
|
cpp_type2name (enum cpp_ttype type, unsigned char flags)
|
{
|
{
|
if (flags & DIGRAPH)
|
if (flags & DIGRAPH)
|
return (const char *) cpp_digraph2name (type);
|
return (const char *) cpp_digraph2name (type);
|
else if (flags & NAMED_OP)
|
else if (flags & NAMED_OP)
|
return cpp_named_operator2name (type);
|
return cpp_named_operator2name (type);
|
|
|
return (const char *) token_spellings[type].name;
|
return (const char *) token_spellings[type].name;
|
}
|
}
|
|
|
/* Writes the spelling of token to FP, without any preceding space.
|
/* Writes the spelling of token to FP, without any preceding space.
|
Separated from cpp_spell_token for efficiency - to avoid stdio
|
Separated from cpp_spell_token for efficiency - to avoid stdio
|
double-buffering. */
|
double-buffering. */
|
void
|
void
|
cpp_output_token (const cpp_token *token, FILE *fp)
|
cpp_output_token (const cpp_token *token, FILE *fp)
|
{
|
{
|
switch (TOKEN_SPELL (token))
|
switch (TOKEN_SPELL (token))
|
{
|
{
|
case SPELL_OPERATOR:
|
case SPELL_OPERATOR:
|
{
|
{
|
const unsigned char *spelling;
|
const unsigned char *spelling;
|
int c;
|
int c;
|
|
|
if (token->flags & DIGRAPH)
|
if (token->flags & DIGRAPH)
|
spelling = cpp_digraph2name (token->type);
|
spelling = cpp_digraph2name (token->type);
|
else if (token->flags & NAMED_OP)
|
else if (token->flags & NAMED_OP)
|
goto spell_ident;
|
goto spell_ident;
|
else
|
else
|
spelling = TOKEN_NAME (token);
|
spelling = TOKEN_NAME (token);
|
|
|
c = *spelling;
|
c = *spelling;
|
do
|
do
|
putc (c, fp);
|
putc (c, fp);
|
while ((c = *++spelling) != '\0');
|
while ((c = *++spelling) != '\0');
|
}
|
}
|
break;
|
break;
|
|
|
spell_ident:
|
spell_ident:
|
case SPELL_IDENT:
|
case SPELL_IDENT:
|
{
|
{
|
size_t i;
|
size_t i;
|
const unsigned char * name = NODE_NAME (token->val.node.node);
|
const unsigned char * name = NODE_NAME (token->val.node.node);
|
|
|
for (i = 0; i < NODE_LEN (token->val.node.node); i++)
|
for (i = 0; i < NODE_LEN (token->val.node.node); i++)
|
if (name[i] & ~0x7F)
|
if (name[i] & ~0x7F)
|
{
|
{
|
unsigned char buffer[10];
|
unsigned char buffer[10];
|
i += utf8_to_ucn (buffer, name + i) - 1;
|
i += utf8_to_ucn (buffer, name + i) - 1;
|
fwrite (buffer, 1, 10, fp);
|
fwrite (buffer, 1, 10, fp);
|
}
|
}
|
else
|
else
|
fputc (NODE_NAME (token->val.node.node)[i], fp);
|
fputc (NODE_NAME (token->val.node.node)[i], fp);
|
}
|
}
|
break;
|
break;
|
|
|
case SPELL_LITERAL:
|
case SPELL_LITERAL:
|
fwrite (token->val.str.text, 1, token->val.str.len, fp);
|
fwrite (token->val.str.text, 1, token->val.str.len, fp);
|
break;
|
break;
|
|
|
case SPELL_NONE:
|
case SPELL_NONE:
|
/* An error, most probably. */
|
/* An error, most probably. */
|
break;
|
break;
|
}
|
}
|
}
|
}
|
|
|
/* Compare two tokens. */
|
/* Compare two tokens. */
|
int
|
int
|
_cpp_equiv_tokens (const cpp_token *a, const cpp_token *b)
|
_cpp_equiv_tokens (const cpp_token *a, const cpp_token *b)
|
{
|
{
|
if (a->type == b->type && a->flags == b->flags)
|
if (a->type == b->type && a->flags == b->flags)
|
switch (TOKEN_SPELL (a))
|
switch (TOKEN_SPELL (a))
|
{
|
{
|
default: /* Keep compiler happy. */
|
default: /* Keep compiler happy. */
|
case SPELL_OPERATOR:
|
case SPELL_OPERATOR:
|
/* token_no is used to track where multiple consecutive ##
|
/* token_no is used to track where multiple consecutive ##
|
tokens were originally located. */
|
tokens were originally located. */
|
return (a->type != CPP_PASTE || a->val.token_no == b->val.token_no);
|
return (a->type != CPP_PASTE || a->val.token_no == b->val.token_no);
|
case SPELL_NONE:
|
case SPELL_NONE:
|
return (a->type != CPP_MACRO_ARG
|
return (a->type != CPP_MACRO_ARG
|
|| a->val.macro_arg.arg_no == b->val.macro_arg.arg_no);
|
|| a->val.macro_arg.arg_no == b->val.macro_arg.arg_no);
|
case SPELL_IDENT:
|
case SPELL_IDENT:
|
return a->val.node.node == b->val.node.node;
|
return a->val.node.node == b->val.node.node;
|
case SPELL_LITERAL:
|
case SPELL_LITERAL:
|
return (a->val.str.len == b->val.str.len
|
return (a->val.str.len == b->val.str.len
|
&& !memcmp (a->val.str.text, b->val.str.text,
|
&& !memcmp (a->val.str.text, b->val.str.text,
|
a->val.str.len));
|
a->val.str.len));
|
}
|
}
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Returns nonzero if a space should be inserted to avoid an
|
/* Returns nonzero if a space should be inserted to avoid an
|
accidental token paste for output. For simplicity, it is
|
accidental token paste for output. For simplicity, it is
|
conservative, and occasionally advises a space where one is not
|
conservative, and occasionally advises a space where one is not
|
needed, e.g. "." and ".2". */
|
needed, e.g. "." and ".2". */
|
int
|
int
|
cpp_avoid_paste (cpp_reader *pfile, const cpp_token *token1,
|
cpp_avoid_paste (cpp_reader *pfile, const cpp_token *token1,
|
const cpp_token *token2)
|
const cpp_token *token2)
|
{
|
{
|
enum cpp_ttype a = token1->type, b = token2->type;
|
enum cpp_ttype a = token1->type, b = token2->type;
|
cppchar_t c;
|
cppchar_t c;
|
|
|
if (token1->flags & NAMED_OP)
|
if (token1->flags & NAMED_OP)
|
a = CPP_NAME;
|
a = CPP_NAME;
|
if (token2->flags & NAMED_OP)
|
if (token2->flags & NAMED_OP)
|
b = CPP_NAME;
|
b = CPP_NAME;
|
|
|
c = EOF;
|
c = EOF;
|
if (token2->flags & DIGRAPH)
|
if (token2->flags & DIGRAPH)
|
c = digraph_spellings[(int) b - (int) CPP_FIRST_DIGRAPH][0];
|
c = digraph_spellings[(int) b - (int) CPP_FIRST_DIGRAPH][0];
|
else if (token_spellings[b].category == SPELL_OPERATOR)
|
else if (token_spellings[b].category == SPELL_OPERATOR)
|
c = token_spellings[b].name[0];
|
c = token_spellings[b].name[0];
|
|
|
/* Quickly get everything that can paste with an '='. */
|
/* Quickly get everything that can paste with an '='. */
|
if ((int) a <= (int) CPP_LAST_EQ && c == '=')
|
if ((int) a <= (int) CPP_LAST_EQ && c == '=')
|
return 1;
|
return 1;
|
|
|
switch (a)
|
switch (a)
|
{
|
{
|
case CPP_GREATER: return c == '>';
|
case CPP_GREATER: return c == '>';
|
case CPP_LESS: return c == '<' || c == '%' || c == ':';
|
case CPP_LESS: return c == '<' || c == '%' || c == ':';
|
case CPP_PLUS: return c == '+';
|
case CPP_PLUS: return c == '+';
|
case CPP_MINUS: return c == '-' || c == '>';
|
case CPP_MINUS: return c == '-' || c == '>';
|
case CPP_DIV: return c == '/' || c == '*'; /* Comments. */
|
case CPP_DIV: return c == '/' || c == '*'; /* Comments. */
|
case CPP_MOD: return c == ':' || c == '>';
|
case CPP_MOD: return c == ':' || c == '>';
|
case CPP_AND: return c == '&';
|
case CPP_AND: return c == '&';
|
case CPP_OR: return c == '|';
|
case CPP_OR: return c == '|';
|
case CPP_COLON: return c == ':' || c == '>';
|
case CPP_COLON: return c == ':' || c == '>';
|
case CPP_DEREF: return c == '*';
|
case CPP_DEREF: return c == '*';
|
case CPP_DOT: return c == '.' || c == '%' || b == CPP_NUMBER;
|
case CPP_DOT: return c == '.' || c == '%' || b == CPP_NUMBER;
|
case CPP_HASH: return c == '#' || c == '%'; /* Digraph form. */
|
case CPP_HASH: return c == '#' || c == '%'; /* Digraph form. */
|
case CPP_NAME: return ((b == CPP_NUMBER
|
case CPP_NAME: return ((b == CPP_NUMBER
|
&& name_p (pfile, &token2->val.str))
|
&& name_p (pfile, &token2->val.str))
|
|| b == CPP_NAME
|
|| b == CPP_NAME
|
|| b == CPP_CHAR || b == CPP_STRING); /* L */
|
|| b == CPP_CHAR || b == CPP_STRING); /* L */
|
case CPP_NUMBER: return (b == CPP_NUMBER || b == CPP_NAME
|
case CPP_NUMBER: return (b == CPP_NUMBER || b == CPP_NAME
|
|| c == '.' || c == '+' || c == '-');
|
|| c == '.' || c == '+' || c == '-');
|
/* UCNs */
|
/* UCNs */
|
case CPP_OTHER: return ((token1->val.str.text[0] == '\\'
|
case CPP_OTHER: return ((token1->val.str.text[0] == '\\'
|
&& b == CPP_NAME)
|
&& b == CPP_NAME)
|
|| (CPP_OPTION (pfile, objc)
|
|| (CPP_OPTION (pfile, objc)
|
&& token1->val.str.text[0] == '@'
|
&& token1->val.str.text[0] == '@'
|
&& (b == CPP_NAME || b == CPP_STRING)));
|
&& (b == CPP_NAME || b == CPP_STRING)));
|
default: break;
|
default: break;
|
}
|
}
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Output all the remaining tokens on the current line, and a newline
|
/* Output all the remaining tokens on the current line, and a newline
|
character, to FP. Leading whitespace is removed. If there are
|
character, to FP. Leading whitespace is removed. If there are
|
macros, special token padding is not performed. */
|
macros, special token padding is not performed. */
|
void
|
void
|
cpp_output_line (cpp_reader *pfile, FILE *fp)
|
cpp_output_line (cpp_reader *pfile, FILE *fp)
|
{
|
{
|
const cpp_token *token;
|
const cpp_token *token;
|
|
|
token = cpp_get_token (pfile);
|
token = cpp_get_token (pfile);
|
while (token->type != CPP_EOF)
|
while (token->type != CPP_EOF)
|
{
|
{
|
cpp_output_token (token, fp);
|
cpp_output_token (token, fp);
|
token = cpp_get_token (pfile);
|
token = cpp_get_token (pfile);
|
if (token->flags & PREV_WHITE)
|
if (token->flags & PREV_WHITE)
|
putc (' ', fp);
|
putc (' ', fp);
|
}
|
}
|
|
|
putc ('\n', fp);
|
putc ('\n', fp);
|
}
|
}
|
|
|
/* Return a string representation of all the remaining tokens on the
|
/* Return a string representation of all the remaining tokens on the
|
current line. The result is allocated using xmalloc and must be
|
current line. The result is allocated using xmalloc and must be
|
freed by the caller. */
|
freed by the caller. */
|
unsigned char *
|
unsigned char *
|
cpp_output_line_to_string (cpp_reader *pfile, const unsigned char *dir_name)
|
cpp_output_line_to_string (cpp_reader *pfile, const unsigned char *dir_name)
|
{
|
{
|
const cpp_token *token;
|
const cpp_token *token;
|
unsigned int out = dir_name ? ustrlen (dir_name) : 0;
|
unsigned int out = dir_name ? ustrlen (dir_name) : 0;
|
unsigned int alloced = 120 + out;
|
unsigned int alloced = 120 + out;
|
unsigned char *result = (unsigned char *) xmalloc (alloced);
|
unsigned char *result = (unsigned char *) xmalloc (alloced);
|
|
|
/* If DIR_NAME is empty, there are no initial contents. */
|
/* If DIR_NAME is empty, there are no initial contents. */
|
if (dir_name)
|
if (dir_name)
|
{
|
{
|
sprintf ((char *) result, "#%s ", dir_name);
|
sprintf ((char *) result, "#%s ", dir_name);
|
out += 2;
|
out += 2;
|
}
|
}
|
|
|
token = cpp_get_token (pfile);
|
token = cpp_get_token (pfile);
|
while (token->type != CPP_EOF)
|
while (token->type != CPP_EOF)
|
{
|
{
|
unsigned char *last;
|
unsigned char *last;
|
/* Include room for a possible space and the terminating nul. */
|
/* Include room for a possible space and the terminating nul. */
|
unsigned int len = cpp_token_len (token) + 2;
|
unsigned int len = cpp_token_len (token) + 2;
|
|
|
if (out + len > alloced)
|
if (out + len > alloced)
|
{
|
{
|
alloced *= 2;
|
alloced *= 2;
|
if (out + len > alloced)
|
if (out + len > alloced)
|
alloced = out + len;
|
alloced = out + len;
|
result = (unsigned char *) xrealloc (result, alloced);
|
result = (unsigned char *) xrealloc (result, alloced);
|
}
|
}
|
|
|
last = cpp_spell_token (pfile, token, &result[out], 0);
|
last = cpp_spell_token (pfile, token, &result[out], 0);
|
out = last - result;
|
out = last - result;
|
|
|
token = cpp_get_token (pfile);
|
token = cpp_get_token (pfile);
|
if (token->flags & PREV_WHITE)
|
if (token->flags & PREV_WHITE)
|
result[out++] = ' ';
|
result[out++] = ' ';
|
}
|
}
|
|
|
result[out] = '\0';
|
result[out] = '\0';
|
return result;
|
return result;
|
}
|
}
|
|
|
/* Memory buffers. Changing these three constants can have a dramatic
|
/* Memory buffers. Changing these three constants can have a dramatic
|
effect on performance. The values here are reasonable defaults,
|
effect on performance. The values here are reasonable defaults,
|
but might be tuned. If you adjust them, be sure to test across a
|
but might be tuned. If you adjust them, be sure to test across a
|
range of uses of cpplib, including heavy nested function-like macro
|
range of uses of cpplib, including heavy nested function-like macro
|
expansion. Also check the change in peak memory usage (NJAMD is a
|
expansion. Also check the change in peak memory usage (NJAMD is a
|
good tool for this). */
|
good tool for this). */
|
#define MIN_BUFF_SIZE 8000
|
#define MIN_BUFF_SIZE 8000
|
#define BUFF_SIZE_UPPER_BOUND(MIN_SIZE) (MIN_BUFF_SIZE + (MIN_SIZE) * 3 / 2)
|
#define BUFF_SIZE_UPPER_BOUND(MIN_SIZE) (MIN_BUFF_SIZE + (MIN_SIZE) * 3 / 2)
|
#define EXTENDED_BUFF_SIZE(BUFF, MIN_EXTRA) \
|
#define EXTENDED_BUFF_SIZE(BUFF, MIN_EXTRA) \
|
(MIN_EXTRA + ((BUFF)->limit - (BUFF)->cur) * 2)
|
(MIN_EXTRA + ((BUFF)->limit - (BUFF)->cur) * 2)
|
|
|
#if MIN_BUFF_SIZE > BUFF_SIZE_UPPER_BOUND (0)
|
#if MIN_BUFF_SIZE > BUFF_SIZE_UPPER_BOUND (0)
|
#error BUFF_SIZE_UPPER_BOUND must be at least as large as MIN_BUFF_SIZE!
|
#error BUFF_SIZE_UPPER_BOUND must be at least as large as MIN_BUFF_SIZE!
|
#endif
|
#endif
|
|
|
/* Create a new allocation buffer. Place the control block at the end
|
/* Create a new allocation buffer. Place the control block at the end
|
of the buffer, so that buffer overflows will cause immediate chaos. */
|
of the buffer, so that buffer overflows will cause immediate chaos. */
|
static _cpp_buff *
|
static _cpp_buff *
|
new_buff (size_t len)
|
new_buff (size_t len)
|
{
|
{
|
_cpp_buff *result;
|
_cpp_buff *result;
|
unsigned char *base;
|
unsigned char *base;
|
|
|
if (len < MIN_BUFF_SIZE)
|
if (len < MIN_BUFF_SIZE)
|
len = MIN_BUFF_SIZE;
|
len = MIN_BUFF_SIZE;
|
len = CPP_ALIGN (len);
|
len = CPP_ALIGN (len);
|
|
|
base = XNEWVEC (unsigned char, len + sizeof (_cpp_buff));
|
base = XNEWVEC (unsigned char, len + sizeof (_cpp_buff));
|
result = (_cpp_buff *) (base + len);
|
result = (_cpp_buff *) (base + len);
|
result->base = base;
|
result->base = base;
|
result->cur = base;
|
result->cur = base;
|
result->limit = base + len;
|
result->limit = base + len;
|
result->next = NULL;
|
result->next = NULL;
|
return result;
|
return result;
|
}
|
}
|
|
|
/* Place a chain of unwanted allocation buffers on the free list. */
|
/* Place a chain of unwanted allocation buffers on the free list. */
|
void
|
void
|
_cpp_release_buff (cpp_reader *pfile, _cpp_buff *buff)
|
_cpp_release_buff (cpp_reader *pfile, _cpp_buff *buff)
|
{
|
{
|
_cpp_buff *end = buff;
|
_cpp_buff *end = buff;
|
|
|
while (end->next)
|
while (end->next)
|
end = end->next;
|
end = end->next;
|
end->next = pfile->free_buffs;
|
end->next = pfile->free_buffs;
|
pfile->free_buffs = buff;
|
pfile->free_buffs = buff;
|
}
|
}
|
|
|
/* Return a free buffer of size at least MIN_SIZE. */
|
/* Return a free buffer of size at least MIN_SIZE. */
|
_cpp_buff *
|
_cpp_buff *
|
_cpp_get_buff (cpp_reader *pfile, size_t min_size)
|
_cpp_get_buff (cpp_reader *pfile, size_t min_size)
|
{
|
{
|
_cpp_buff *result, **p;
|
_cpp_buff *result, **p;
|
|
|
for (p = &pfile->free_buffs;; p = &(*p)->next)
|
for (p = &pfile->free_buffs;; p = &(*p)->next)
|
{
|
{
|
size_t size;
|
size_t size;
|
|
|
if (*p == NULL)
|
if (*p == NULL)
|
return new_buff (min_size);
|
return new_buff (min_size);
|
result = *p;
|
result = *p;
|
size = result->limit - result->base;
|
size = result->limit - result->base;
|
/* Return a buffer that's big enough, but don't waste one that's
|
/* Return a buffer that's big enough, but don't waste one that's
|
way too big. */
|
way too big. */
|
if (size >= min_size && size <= BUFF_SIZE_UPPER_BOUND (min_size))
|
if (size >= min_size && size <= BUFF_SIZE_UPPER_BOUND (min_size))
|
break;
|
break;
|
}
|
}
|
|
|
*p = result->next;
|
*p = result->next;
|
result->next = NULL;
|
result->next = NULL;
|
result->cur = result->base;
|
result->cur = result->base;
|
return result;
|
return result;
|
}
|
}
|
|
|
/* Creates a new buffer with enough space to hold the uncommitted
|
/* Creates a new buffer with enough space to hold the uncommitted
|
remaining bytes of BUFF, and at least MIN_EXTRA more bytes. Copies
|
remaining bytes of BUFF, and at least MIN_EXTRA more bytes. Copies
|
the excess bytes to the new buffer. Chains the new buffer after
|
the excess bytes to the new buffer. Chains the new buffer after
|
BUFF, and returns the new buffer. */
|
BUFF, and returns the new buffer. */
|
_cpp_buff *
|
_cpp_buff *
|
_cpp_append_extend_buff (cpp_reader *pfile, _cpp_buff *buff, size_t min_extra)
|
_cpp_append_extend_buff (cpp_reader *pfile, _cpp_buff *buff, size_t min_extra)
|
{
|
{
|
size_t size = EXTENDED_BUFF_SIZE (buff, min_extra);
|
size_t size = EXTENDED_BUFF_SIZE (buff, min_extra);
|
_cpp_buff *new_buff = _cpp_get_buff (pfile, size);
|
_cpp_buff *new_buff = _cpp_get_buff (pfile, size);
|
|
|
buff->next = new_buff;
|
buff->next = new_buff;
|
memcpy (new_buff->base, buff->cur, BUFF_ROOM (buff));
|
memcpy (new_buff->base, buff->cur, BUFF_ROOM (buff));
|
return new_buff;
|
return new_buff;
|
}
|
}
|
|
|
/* Creates a new buffer with enough space to hold the uncommitted
|
/* Creates a new buffer with enough space to hold the uncommitted
|
remaining bytes of the buffer pointed to by BUFF, and at least
|
remaining bytes of the buffer pointed to by BUFF, and at least
|
MIN_EXTRA more bytes. Copies the excess bytes to the new buffer.
|
MIN_EXTRA more bytes. Copies the excess bytes to the new buffer.
|
Chains the new buffer before the buffer pointed to by BUFF, and
|
Chains the new buffer before the buffer pointed to by BUFF, and
|
updates the pointer to point to the new buffer. */
|
updates the pointer to point to the new buffer. */
|
void
|
void
|
_cpp_extend_buff (cpp_reader *pfile, _cpp_buff **pbuff, size_t min_extra)
|
_cpp_extend_buff (cpp_reader *pfile, _cpp_buff **pbuff, size_t min_extra)
|
{
|
{
|
_cpp_buff *new_buff, *old_buff = *pbuff;
|
_cpp_buff *new_buff, *old_buff = *pbuff;
|
size_t size = EXTENDED_BUFF_SIZE (old_buff, min_extra);
|
size_t size = EXTENDED_BUFF_SIZE (old_buff, min_extra);
|
|
|
new_buff = _cpp_get_buff (pfile, size);
|
new_buff = _cpp_get_buff (pfile, size);
|
memcpy (new_buff->base, old_buff->cur, BUFF_ROOM (old_buff));
|
memcpy (new_buff->base, old_buff->cur, BUFF_ROOM (old_buff));
|
new_buff->next = old_buff;
|
new_buff->next = old_buff;
|
*pbuff = new_buff;
|
*pbuff = new_buff;
|
}
|
}
|
|
|
/* Free a chain of buffers starting at BUFF. */
|
/* Free a chain of buffers starting at BUFF. */
|
void
|
void
|
_cpp_free_buff (_cpp_buff *buff)
|
_cpp_free_buff (_cpp_buff *buff)
|
{
|
{
|
_cpp_buff *next;
|
_cpp_buff *next;
|
|
|
for (; buff; buff = next)
|
for (; buff; buff = next)
|
{
|
{
|
next = buff->next;
|
next = buff->next;
|
free (buff->base);
|
free (buff->base);
|
}
|
}
|
}
|
}
|
|
|
/* Allocate permanent, unaligned storage of length LEN. */
|
/* Allocate permanent, unaligned storage of length LEN. */
|
unsigned char *
|
unsigned char *
|
_cpp_unaligned_alloc (cpp_reader *pfile, size_t len)
|
_cpp_unaligned_alloc (cpp_reader *pfile, size_t len)
|
{
|
{
|
_cpp_buff *buff = pfile->u_buff;
|
_cpp_buff *buff = pfile->u_buff;
|
unsigned char *result = buff->cur;
|
unsigned char *result = buff->cur;
|
|
|
if (len > (size_t) (buff->limit - result))
|
if (len > (size_t) (buff->limit - result))
|
{
|
{
|
buff = _cpp_get_buff (pfile, len);
|
buff = _cpp_get_buff (pfile, len);
|
buff->next = pfile->u_buff;
|
buff->next = pfile->u_buff;
|
pfile->u_buff = buff;
|
pfile->u_buff = buff;
|
result = buff->cur;
|
result = buff->cur;
|
}
|
}
|
|
|
buff->cur = result + len;
|
buff->cur = result + len;
|
return result;
|
return result;
|
}
|
}
|
|
|
/* Allocate permanent, unaligned storage of length LEN from a_buff.
|
/* Allocate permanent, unaligned storage of length LEN from a_buff.
|
That buffer is used for growing allocations when saving macro
|
That buffer is used for growing allocations when saving macro
|
replacement lists in a #define, and when parsing an answer to an
|
replacement lists in a #define, and when parsing an answer to an
|
assertion in #assert, #unassert or #if (and therefore possibly
|
assertion in #assert, #unassert or #if (and therefore possibly
|
whilst expanding macros). It therefore must not be used by any
|
whilst expanding macros). It therefore must not be used by any
|
code that they might call: specifically the lexer and the guts of
|
code that they might call: specifically the lexer and the guts of
|
the macro expander.
|
the macro expander.
|
|
|
All existing other uses clearly fit this restriction: storing
|
All existing other uses clearly fit this restriction: storing
|
registered pragmas during initialization. */
|
registered pragmas during initialization. */
|
unsigned char *
|
unsigned char *
|
_cpp_aligned_alloc (cpp_reader *pfile, size_t len)
|
_cpp_aligned_alloc (cpp_reader *pfile, size_t len)
|
{
|
{
|
_cpp_buff *buff = pfile->a_buff;
|
_cpp_buff *buff = pfile->a_buff;
|
unsigned char *result = buff->cur;
|
unsigned char *result = buff->cur;
|
|
|
if (len > (size_t) (buff->limit - result))
|
if (len > (size_t) (buff->limit - result))
|
{
|
{
|
buff = _cpp_get_buff (pfile, len);
|
buff = _cpp_get_buff (pfile, len);
|
buff->next = pfile->a_buff;
|
buff->next = pfile->a_buff;
|
pfile->a_buff = buff;
|
pfile->a_buff = buff;
|
result = buff->cur;
|
result = buff->cur;
|
}
|
}
|
|
|
buff->cur = result + len;
|
buff->cur = result + len;
|
return result;
|
return result;
|
}
|
}
|
|
|
/* Say which field of TOK is in use. */
|
/* Say which field of TOK is in use. */
|
|
|
enum cpp_token_fld_kind
|
enum cpp_token_fld_kind
|
cpp_token_val_index (cpp_token *tok)
|
cpp_token_val_index (cpp_token *tok)
|
{
|
{
|
switch (TOKEN_SPELL (tok))
|
switch (TOKEN_SPELL (tok))
|
{
|
{
|
case SPELL_IDENT:
|
case SPELL_IDENT:
|
return CPP_TOKEN_FLD_NODE;
|
return CPP_TOKEN_FLD_NODE;
|
case SPELL_LITERAL:
|
case SPELL_LITERAL:
|
return CPP_TOKEN_FLD_STR;
|
return CPP_TOKEN_FLD_STR;
|
case SPELL_OPERATOR:
|
case SPELL_OPERATOR:
|
if (tok->type == CPP_PASTE)
|
if (tok->type == CPP_PASTE)
|
return CPP_TOKEN_FLD_TOKEN_NO;
|
return CPP_TOKEN_FLD_TOKEN_NO;
|
else
|
else
|
return CPP_TOKEN_FLD_NONE;
|
return CPP_TOKEN_FLD_NONE;
|
case SPELL_NONE:
|
case SPELL_NONE:
|
if (tok->type == CPP_MACRO_ARG)
|
if (tok->type == CPP_MACRO_ARG)
|
return CPP_TOKEN_FLD_ARG_NO;
|
return CPP_TOKEN_FLD_ARG_NO;
|
else if (tok->type == CPP_PADDING)
|
else if (tok->type == CPP_PADDING)
|
return CPP_TOKEN_FLD_SOURCE;
|
return CPP_TOKEN_FLD_SOURCE;
|
else if (tok->type == CPP_PRAGMA)
|
else if (tok->type == CPP_PRAGMA)
|
return CPP_TOKEN_FLD_PRAGMA;
|
return CPP_TOKEN_FLD_PRAGMA;
|
/* else fall through */
|
/* else fall through */
|
default:
|
default:
|
return CPP_TOKEN_FLD_NONE;
|
return CPP_TOKEN_FLD_NONE;
|
}
|
}
|
}
|
}
|
|
|
