/* Mainly the interface between cpplib and the C front ends.
|
/* Mainly the interface between cpplib and the C front ends.
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Copyright (C) 1987, 1988, 1989, 1992, 1994, 1995, 1996, 1997
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Copyright (C) 1987, 1988, 1989, 1992, 1994, 1995, 1996, 1997
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1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007
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1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007
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Free Software Foundation, Inc.
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Free Software Foundation, Inc.
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|
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This file is part of GCC.
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This file is part of GCC.
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|
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GCC is free software; you can redistribute it and/or modify it under
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GCC is free software; you can redistribute it and/or modify it under
|
the terms of the GNU General Public License as published by the Free
|
the terms of the GNU General Public License as published by the Free
|
Software Foundation; either version 3, or (at your option) any later
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Software Foundation; either version 3, or (at your option) any later
|
version.
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version.
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|
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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for more details.
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|
|
You should have received a copy of the GNU General Public License
|
You should have received a copy of the GNU General Public License
|
along with GCC; see the file COPYING3. If not see
|
along with GCC; see the file COPYING3. If not see
|
<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 "coretypes.h"
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#include "coretypes.h"
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#include "tm.h"
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#include "tm.h"
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|
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#include "real.h"
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#include "real.h"
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#include "rtl.h"
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#include "rtl.h"
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#include "tree.h"
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#include "tree.h"
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#include "input.h"
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#include "input.h"
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#include "output.h"
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#include "output.h"
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#include "c-tree.h"
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#include "c-tree.h"
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#include "c-common.h"
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#include "c-common.h"
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#include "flags.h"
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#include "flags.h"
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#include "timevar.h"
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#include "timevar.h"
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#include "cpplib.h"
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#include "cpplib.h"
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#include "c-pragma.h"
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#include "c-pragma.h"
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#include "toplev.h"
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#include "toplev.h"
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#include "intl.h"
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#include "intl.h"
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#include "tm_p.h"
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#include "tm_p.h"
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#include "splay-tree.h"
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#include "splay-tree.h"
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#include "debug.h"
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#include "debug.h"
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|
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/* We may keep statistics about how long which files took to compile. */
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/* We may keep statistics about how long which files took to compile. */
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static int header_time, body_time;
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static int header_time, body_time;
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static splay_tree file_info_tree;
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static splay_tree file_info_tree;
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|
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int pending_lang_change; /* If we need to switch languages - C++ only */
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int pending_lang_change; /* If we need to switch languages - C++ only */
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int c_header_level; /* depth in C headers - C++ only */
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int c_header_level; /* depth in C headers - C++ only */
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|
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/* If we need to translate characters received. This is tri-state:
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/* If we need to translate characters received. This is tri-state:
|
0 means use only the untranslated string; 1 means use only
|
0 means use only the untranslated string; 1 means use only
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the translated string; -1 means chain the translated string
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the translated string; -1 means chain the translated string
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to the untranslated one. */
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to the untranslated one. */
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int c_lex_string_translate = 1;
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int c_lex_string_translate = 1;
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|
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/* True if strings should be passed to the caller of c_lex completely
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/* True if strings should be passed to the caller of c_lex completely
|
unmolested (no concatenation, no translation). */
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unmolested (no concatenation, no translation). */
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bool c_lex_return_raw_strings = false;
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bool c_lex_return_raw_strings = false;
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|
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static tree interpret_integer (const cpp_token *, unsigned int);
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static tree interpret_integer (const cpp_token *, unsigned int);
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static tree interpret_float (const cpp_token *, unsigned int);
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static tree interpret_float (const cpp_token *, unsigned int);
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static enum integer_type_kind narrowest_unsigned_type
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static enum integer_type_kind narrowest_unsigned_type
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(unsigned HOST_WIDE_INT, unsigned HOST_WIDE_INT, unsigned int);
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(unsigned HOST_WIDE_INT, unsigned HOST_WIDE_INT, unsigned int);
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static enum integer_type_kind narrowest_signed_type
|
static enum integer_type_kind narrowest_signed_type
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(unsigned HOST_WIDE_INT, unsigned HOST_WIDE_INT, unsigned int);
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(unsigned HOST_WIDE_INT, unsigned HOST_WIDE_INT, unsigned int);
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static enum cpp_ttype lex_string (const cpp_token *, tree *, bool);
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static enum cpp_ttype lex_string (const cpp_token *, tree *, bool);
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static tree lex_charconst (const cpp_token *);
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static tree lex_charconst (const cpp_token *);
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static void update_header_times (const char *);
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static void update_header_times (const char *);
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static int dump_one_header (splay_tree_node, void *);
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static int dump_one_header (splay_tree_node, void *);
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static void cb_line_change (cpp_reader *, const cpp_token *, int);
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static void cb_line_change (cpp_reader *, const cpp_token *, int);
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static void cb_ident (cpp_reader *, unsigned int, const cpp_string *);
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static void cb_ident (cpp_reader *, unsigned int, const cpp_string *);
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static void cb_def_pragma (cpp_reader *, unsigned int);
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static void cb_def_pragma (cpp_reader *, unsigned int);
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static void cb_define (cpp_reader *, unsigned int, cpp_hashnode *);
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static void cb_define (cpp_reader *, unsigned int, cpp_hashnode *);
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static void cb_undef (cpp_reader *, unsigned int, cpp_hashnode *);
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static void cb_undef (cpp_reader *, unsigned int, cpp_hashnode *);
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|
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void
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void
|
init_c_lex (void)
|
init_c_lex (void)
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{
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{
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struct cpp_callbacks *cb;
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struct cpp_callbacks *cb;
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struct c_fileinfo *toplevel;
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struct c_fileinfo *toplevel;
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|
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/* The get_fileinfo data structure must be initialized before
|
/* The get_fileinfo data structure must be initialized before
|
cpp_read_main_file is called. */
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cpp_read_main_file is called. */
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toplevel = get_fileinfo ("<top level>");
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toplevel = get_fileinfo ("<top level>");
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if (flag_detailed_statistics)
|
if (flag_detailed_statistics)
|
{
|
{
|
header_time = 0;
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header_time = 0;
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body_time = get_run_time ();
|
body_time = get_run_time ();
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toplevel->time = body_time;
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toplevel->time = body_time;
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}
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}
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|
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cb = cpp_get_callbacks (parse_in);
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cb = cpp_get_callbacks (parse_in);
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cb->line_change = cb_line_change;
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cb->line_change = cb_line_change;
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cb->ident = cb_ident;
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cb->ident = cb_ident;
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cb->def_pragma = cb_def_pragma;
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cb->def_pragma = cb_def_pragma;
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cb->valid_pch = c_common_valid_pch;
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cb->valid_pch = c_common_valid_pch;
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cb->read_pch = c_common_read_pch;
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cb->read_pch = c_common_read_pch;
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|
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/* Set the debug callbacks if we can use them. */
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/* Set the debug callbacks if we can use them. */
|
if (debug_info_level == DINFO_LEVEL_VERBOSE
|
if (debug_info_level == DINFO_LEVEL_VERBOSE
|
&& (write_symbols == DWARF2_DEBUG
|
&& (write_symbols == DWARF2_DEBUG
|
|| write_symbols == VMS_AND_DWARF2_DEBUG))
|
|| write_symbols == VMS_AND_DWARF2_DEBUG))
|
{
|
{
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cb->define = cb_define;
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cb->define = cb_define;
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cb->undef = cb_undef;
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cb->undef = cb_undef;
|
}
|
}
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}
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}
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|
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struct c_fileinfo *
|
struct c_fileinfo *
|
get_fileinfo (const char *name)
|
get_fileinfo (const char *name)
|
{
|
{
|
splay_tree_node n;
|
splay_tree_node n;
|
struct c_fileinfo *fi;
|
struct c_fileinfo *fi;
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|
|
if (!file_info_tree)
|
if (!file_info_tree)
|
file_info_tree = splay_tree_new ((splay_tree_compare_fn) strcmp,
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file_info_tree = splay_tree_new ((splay_tree_compare_fn) strcmp,
|
0,
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0,
|
(splay_tree_delete_value_fn) free);
|
(splay_tree_delete_value_fn) free);
|
|
|
n = splay_tree_lookup (file_info_tree, (splay_tree_key) name);
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n = splay_tree_lookup (file_info_tree, (splay_tree_key) name);
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if (n)
|
if (n)
|
return (struct c_fileinfo *) n->value;
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return (struct c_fileinfo *) n->value;
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|
|
fi = XNEW (struct c_fileinfo);
|
fi = XNEW (struct c_fileinfo);
|
fi->time = 0;
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fi->time = 0;
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fi->interface_only = 0;
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fi->interface_only = 0;
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fi->interface_unknown = 1;
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fi->interface_unknown = 1;
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splay_tree_insert (file_info_tree, (splay_tree_key) name,
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splay_tree_insert (file_info_tree, (splay_tree_key) name,
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(splay_tree_value) fi);
|
(splay_tree_value) fi);
|
return fi;
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return fi;
|
}
|
}
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|
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static void
|
static void
|
update_header_times (const char *name)
|
update_header_times (const char *name)
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{
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{
|
/* Changing files again. This means currently collected time
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/* Changing files again. This means currently collected time
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is charged against header time, and body time starts back at 0. */
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is charged against header time, and body time starts back at 0. */
|
if (flag_detailed_statistics)
|
if (flag_detailed_statistics)
|
{
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{
|
int this_time = get_run_time ();
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int this_time = get_run_time ();
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struct c_fileinfo *file = get_fileinfo (name);
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struct c_fileinfo *file = get_fileinfo (name);
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header_time += this_time - body_time;
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header_time += this_time - body_time;
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file->time += this_time - body_time;
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file->time += this_time - body_time;
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body_time = this_time;
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body_time = this_time;
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}
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}
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}
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}
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static int
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static int
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dump_one_header (splay_tree_node n, void * ARG_UNUSED (dummy))
|
dump_one_header (splay_tree_node n, void * ARG_UNUSED (dummy))
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{
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{
|
print_time ((const char *) n->key,
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print_time ((const char *) n->key,
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((struct c_fileinfo *) n->value)->time);
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((struct c_fileinfo *) n->value)->time);
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return 0;
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return 0;
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}
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}
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void
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void
|
dump_time_statistics (void)
|
dump_time_statistics (void)
|
{
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{
|
struct c_fileinfo *file = get_fileinfo (input_filename);
|
struct c_fileinfo *file = get_fileinfo (input_filename);
|
int this_time = get_run_time ();
|
int this_time = get_run_time ();
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file->time += this_time - body_time;
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file->time += this_time - body_time;
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|
|
fprintf (stderr, "\n******\n");
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fprintf (stderr, "\n******\n");
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print_time ("header files (total)", header_time);
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print_time ("header files (total)", header_time);
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print_time ("main file (total)", this_time - body_time);
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print_time ("main file (total)", this_time - body_time);
|
fprintf (stderr, "ratio = %g : 1\n",
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fprintf (stderr, "ratio = %g : 1\n",
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(double) header_time / (double) (this_time - body_time));
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(double) header_time / (double) (this_time - body_time));
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fprintf (stderr, "\n******\n");
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fprintf (stderr, "\n******\n");
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|
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splay_tree_foreach (file_info_tree, dump_one_header, 0);
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splay_tree_foreach (file_info_tree, dump_one_header, 0);
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}
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}
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static void
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static void
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cb_ident (cpp_reader * ARG_UNUSED (pfile),
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cb_ident (cpp_reader * ARG_UNUSED (pfile),
|
unsigned int ARG_UNUSED (line),
|
unsigned int ARG_UNUSED (line),
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const cpp_string * ARG_UNUSED (str))
|
const cpp_string * ARG_UNUSED (str))
|
{
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{
|
#ifdef ASM_OUTPUT_IDENT
|
#ifdef ASM_OUTPUT_IDENT
|
if (!flag_no_ident)
|
if (!flag_no_ident)
|
{
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{
|
/* Convert escapes in the string. */
|
/* Convert escapes in the string. */
|
cpp_string cstr = { 0, 0 };
|
cpp_string cstr = { 0, 0 };
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if (cpp_interpret_string (pfile, str, 1, &cstr, false))
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if (cpp_interpret_string (pfile, str, 1, &cstr, false))
|
{
|
{
|
ASM_OUTPUT_IDENT (asm_out_file, (const char *) cstr.text);
|
ASM_OUTPUT_IDENT (asm_out_file, (const char *) cstr.text);
|
free ((void *) cstr.text);
|
free ((void *) cstr.text);
|
}
|
}
|
}
|
}
|
#endif
|
#endif
|
}
|
}
|
|
|
/* Called at the start of every non-empty line. TOKEN is the first
|
/* Called at the start of every non-empty line. TOKEN is the first
|
lexed token on the line. Used for diagnostic line numbers. */
|
lexed token on the line. Used for diagnostic line numbers. */
|
static void
|
static void
|
cb_line_change (cpp_reader * ARG_UNUSED (pfile), const cpp_token *token,
|
cb_line_change (cpp_reader * ARG_UNUSED (pfile), const cpp_token *token,
|
int parsing_args)
|
int parsing_args)
|
{
|
{
|
if (token->type != CPP_EOF && !parsing_args)
|
if (token->type != CPP_EOF && !parsing_args)
|
#ifdef USE_MAPPED_LOCATION
|
#ifdef USE_MAPPED_LOCATION
|
input_location = token->src_loc;
|
input_location = token->src_loc;
|
#else
|
#else
|
{
|
{
|
source_location loc = token->src_loc;
|
source_location loc = token->src_loc;
|
const struct line_map *map = linemap_lookup (&line_table, loc);
|
const struct line_map *map = linemap_lookup (&line_table, loc);
|
input_line = SOURCE_LINE (map, loc);
|
input_line = SOURCE_LINE (map, loc);
|
}
|
}
|
#endif
|
#endif
|
}
|
}
|
|
|
void
|
void
|
fe_file_change (const struct line_map *new_map)
|
fe_file_change (const struct line_map *new_map)
|
{
|
{
|
if (new_map == NULL)
|
if (new_map == NULL)
|
return;
|
return;
|
|
|
if (new_map->reason == LC_ENTER)
|
if (new_map->reason == LC_ENTER)
|
{
|
{
|
/* Don't stack the main buffer on the input stack;
|
/* Don't stack the main buffer on the input stack;
|
we already did in compile_file. */
|
we already did in compile_file. */
|
if (!MAIN_FILE_P (new_map))
|
if (!MAIN_FILE_P (new_map))
|
{
|
{
|
#ifdef USE_MAPPED_LOCATION
|
#ifdef USE_MAPPED_LOCATION
|
int included_at = LAST_SOURCE_LINE_LOCATION (new_map - 1);
|
int included_at = LAST_SOURCE_LINE_LOCATION (new_map - 1);
|
|
|
input_location = included_at;
|
input_location = included_at;
|
push_srcloc (new_map->start_location);
|
push_srcloc (new_map->start_location);
|
#else
|
#else
|
int included_at = LAST_SOURCE_LINE (new_map - 1);
|
int included_at = LAST_SOURCE_LINE (new_map - 1);
|
|
|
input_line = included_at;
|
input_line = included_at;
|
push_srcloc (new_map->to_file, 1);
|
push_srcloc (new_map->to_file, 1);
|
#endif
|
#endif
|
(*debug_hooks->start_source_file) (included_at, new_map->to_file);
|
(*debug_hooks->start_source_file) (included_at, new_map->to_file);
|
#ifndef NO_IMPLICIT_EXTERN_C
|
#ifndef NO_IMPLICIT_EXTERN_C
|
if (c_header_level)
|
if (c_header_level)
|
++c_header_level;
|
++c_header_level;
|
else if (new_map->sysp == 2)
|
else if (new_map->sysp == 2)
|
{
|
{
|
c_header_level = 1;
|
c_header_level = 1;
|
++pending_lang_change;
|
++pending_lang_change;
|
}
|
}
|
#endif
|
#endif
|
}
|
}
|
}
|
}
|
else if (new_map->reason == LC_LEAVE)
|
else if (new_map->reason == LC_LEAVE)
|
{
|
{
|
#ifndef NO_IMPLICIT_EXTERN_C
|
#ifndef NO_IMPLICIT_EXTERN_C
|
if (c_header_level && --c_header_level == 0)
|
if (c_header_level && --c_header_level == 0)
|
{
|
{
|
if (new_map->sysp == 2)
|
if (new_map->sysp == 2)
|
warning (0, "badly nested C headers from preprocessor");
|
warning (0, "badly nested C headers from preprocessor");
|
--pending_lang_change;
|
--pending_lang_change;
|
}
|
}
|
#endif
|
#endif
|
pop_srcloc ();
|
pop_srcloc ();
|
|
|
(*debug_hooks->end_source_file) (new_map->to_line);
|
(*debug_hooks->end_source_file) (new_map->to_line);
|
}
|
}
|
|
|
update_header_times (new_map->to_file);
|
update_header_times (new_map->to_file);
|
in_system_header = new_map->sysp != 0;
|
in_system_header = new_map->sysp != 0;
|
#ifdef USE_MAPPED_LOCATION
|
#ifdef USE_MAPPED_LOCATION
|
input_location = new_map->start_location;
|
input_location = new_map->start_location;
|
#else
|
#else
|
input_filename = new_map->to_file;
|
input_filename = new_map->to_file;
|
input_line = new_map->to_line;
|
input_line = new_map->to_line;
|
#endif
|
#endif
|
}
|
}
|
|
|
static void
|
static void
|
cb_def_pragma (cpp_reader *pfile, source_location loc)
|
cb_def_pragma (cpp_reader *pfile, source_location loc)
|
{
|
{
|
/* Issue a warning message if we have been asked to do so. Ignore
|
/* Issue a warning message if we have been asked to do so. Ignore
|
unknown pragmas in system headers unless an explicit
|
unknown pragmas in system headers unless an explicit
|
-Wunknown-pragmas has been given. */
|
-Wunknown-pragmas has been given. */
|
if (warn_unknown_pragmas > in_system_header)
|
if (warn_unknown_pragmas > in_system_header)
|
{
|
{
|
const unsigned char *space, *name;
|
const unsigned char *space, *name;
|
const cpp_token *s;
|
const cpp_token *s;
|
#ifndef USE_MAPPED_LOCATION
|
#ifndef USE_MAPPED_LOCATION
|
location_t fe_loc;
|
location_t fe_loc;
|
const struct line_map *map = linemap_lookup (&line_table, loc);
|
const struct line_map *map = linemap_lookup (&line_table, loc);
|
fe_loc.file = map->to_file;
|
fe_loc.file = map->to_file;
|
fe_loc.line = SOURCE_LINE (map, loc);
|
fe_loc.line = SOURCE_LINE (map, loc);
|
#else
|
#else
|
location_t fe_loc = loc;
|
location_t fe_loc = loc;
|
#endif
|
#endif
|
|
|
space = name = (const unsigned char *) "";
|
space = name = (const unsigned char *) "";
|
s = cpp_get_token (pfile);
|
s = cpp_get_token (pfile);
|
if (s->type != CPP_EOF)
|
if (s->type != CPP_EOF)
|
{
|
{
|
space = cpp_token_as_text (pfile, s);
|
space = cpp_token_as_text (pfile, s);
|
s = cpp_get_token (pfile);
|
s = cpp_get_token (pfile);
|
if (s->type == CPP_NAME)
|
if (s->type == CPP_NAME)
|
name = cpp_token_as_text (pfile, s);
|
name = cpp_token_as_text (pfile, s);
|
}
|
}
|
|
|
warning (OPT_Wunknown_pragmas, "%Hignoring #pragma %s %s",
|
warning (OPT_Wunknown_pragmas, "%Hignoring #pragma %s %s",
|
&fe_loc, space, name);
|
&fe_loc, space, name);
|
}
|
}
|
}
|
}
|
|
|
/* #define callback for DWARF and DWARF2 debug info. */
|
/* #define callback for DWARF and DWARF2 debug info. */
|
static void
|
static void
|
cb_define (cpp_reader *pfile, source_location loc, cpp_hashnode *node)
|
cb_define (cpp_reader *pfile, source_location loc, cpp_hashnode *node)
|
{
|
{
|
const struct line_map *map = linemap_lookup (&line_table, loc);
|
const struct line_map *map = linemap_lookup (&line_table, loc);
|
(*debug_hooks->define) (SOURCE_LINE (map, loc),
|
(*debug_hooks->define) (SOURCE_LINE (map, loc),
|
(const char *) cpp_macro_definition (pfile, node));
|
(const char *) cpp_macro_definition (pfile, node));
|
}
|
}
|
|
|
/* #undef callback for DWARF and DWARF2 debug info. */
|
/* #undef callback for DWARF and DWARF2 debug info. */
|
static void
|
static void
|
cb_undef (cpp_reader * ARG_UNUSED (pfile), source_location loc,
|
cb_undef (cpp_reader * ARG_UNUSED (pfile), source_location loc,
|
cpp_hashnode *node)
|
cpp_hashnode *node)
|
{
|
{
|
const struct line_map *map = linemap_lookup (&line_table, loc);
|
const struct line_map *map = linemap_lookup (&line_table, loc);
|
(*debug_hooks->undef) (SOURCE_LINE (map, loc),
|
(*debug_hooks->undef) (SOURCE_LINE (map, loc),
|
(const char *) NODE_NAME (node));
|
(const char *) NODE_NAME (node));
|
}
|
}
|
|
|
/* Read a token and return its type. Fill *VALUE with its value, if
|
/* Read a token and return its type. Fill *VALUE with its value, if
|
applicable. Fill *CPP_FLAGS with the token's flags, if it is
|
applicable. Fill *CPP_FLAGS with the token's flags, if it is
|
non-NULL. */
|
non-NULL. */
|
|
|
enum cpp_ttype
|
enum cpp_ttype
|
c_lex_with_flags (tree *value, location_t *loc, unsigned char *cpp_flags)
|
c_lex_with_flags (tree *value, location_t *loc, unsigned char *cpp_flags)
|
{
|
{
|
static bool no_more_pch;
|
static bool no_more_pch;
|
const cpp_token *tok;
|
const cpp_token *tok;
|
enum cpp_ttype type;
|
enum cpp_ttype type;
|
unsigned char add_flags = 0;
|
unsigned char add_flags = 0;
|
|
|
timevar_push (TV_CPP);
|
timevar_push (TV_CPP);
|
retry:
|
retry:
|
tok = cpp_get_token (parse_in);
|
tok = cpp_get_token (parse_in);
|
type = tok->type;
|
type = tok->type;
|
|
|
retry_after_at:
|
retry_after_at:
|
#ifdef USE_MAPPED_LOCATION
|
#ifdef USE_MAPPED_LOCATION
|
*loc = tok->src_loc;
|
*loc = tok->src_loc;
|
#else
|
#else
|
*loc = input_location;
|
*loc = input_location;
|
#endif
|
#endif
|
switch (type)
|
switch (type)
|
{
|
{
|
case CPP_PADDING:
|
case CPP_PADDING:
|
goto retry;
|
goto retry;
|
|
|
case CPP_NAME:
|
case CPP_NAME:
|
*value = HT_IDENT_TO_GCC_IDENT (HT_NODE (tok->val.node));
|
*value = HT_IDENT_TO_GCC_IDENT (HT_NODE (tok->val.node));
|
break;
|
break;
|
|
|
case CPP_NUMBER:
|
case CPP_NUMBER:
|
{
|
{
|
unsigned int flags = cpp_classify_number (parse_in, tok);
|
unsigned int flags = cpp_classify_number (parse_in, tok);
|
|
|
switch (flags & CPP_N_CATEGORY)
|
switch (flags & CPP_N_CATEGORY)
|
{
|
{
|
case CPP_N_INVALID:
|
case CPP_N_INVALID:
|
/* cpplib has issued an error. */
|
/* cpplib has issued an error. */
|
*value = error_mark_node;
|
*value = error_mark_node;
|
errorcount++;
|
errorcount++;
|
break;
|
break;
|
|
|
case CPP_N_INTEGER:
|
case CPP_N_INTEGER:
|
/* C++ uses '0' to mark virtual functions as pure.
|
/* C++ uses '0' to mark virtual functions as pure.
|
Set PURE_ZERO to pass this information to the C++ parser. */
|
Set PURE_ZERO to pass this information to the C++ parser. */
|
if (tok->val.str.len == 1 && *tok->val.str.text == '0')
|
if (tok->val.str.len == 1 && *tok->val.str.text == '0')
|
add_flags = PURE_ZERO;
|
add_flags = PURE_ZERO;
|
*value = interpret_integer (tok, flags);
|
*value = interpret_integer (tok, flags);
|
break;
|
break;
|
|
|
case CPP_N_FLOATING:
|
case CPP_N_FLOATING:
|
*value = interpret_float (tok, flags);
|
*value = interpret_float (tok, flags);
|
break;
|
break;
|
|
|
default:
|
default:
|
gcc_unreachable ();
|
gcc_unreachable ();
|
}
|
}
|
}
|
}
|
break;
|
break;
|
|
|
case CPP_ATSIGN:
|
case CPP_ATSIGN:
|
/* An @ may give the next token special significance in Objective-C. */
|
/* An @ may give the next token special significance in Objective-C. */
|
if (c_dialect_objc ())
|
if (c_dialect_objc ())
|
{
|
{
|
location_t atloc = input_location;
|
location_t atloc = input_location;
|
|
|
retry_at:
|
retry_at:
|
tok = cpp_get_token (parse_in);
|
tok = cpp_get_token (parse_in);
|
type = tok->type;
|
type = tok->type;
|
switch (type)
|
switch (type)
|
{
|
{
|
case CPP_PADDING:
|
case CPP_PADDING:
|
goto retry_at;
|
goto retry_at;
|
|
|
case CPP_STRING:
|
case CPP_STRING:
|
case CPP_WSTRING:
|
case CPP_WSTRING:
|
type = lex_string (tok, value, true);
|
type = lex_string (tok, value, true);
|
break;
|
break;
|
|
|
case CPP_NAME:
|
case CPP_NAME:
|
*value = HT_IDENT_TO_GCC_IDENT (HT_NODE (tok->val.node));
|
*value = HT_IDENT_TO_GCC_IDENT (HT_NODE (tok->val.node));
|
if (objc_is_reserved_word (*value))
|
if (objc_is_reserved_word (*value))
|
{
|
{
|
type = CPP_AT_NAME;
|
type = CPP_AT_NAME;
|
break;
|
break;
|
}
|
}
|
/* FALLTHROUGH */
|
/* FALLTHROUGH */
|
|
|
default:
|
default:
|
/* ... or not. */
|
/* ... or not. */
|
error ("%Hstray %<@%> in program", &atloc);
|
error ("%Hstray %<@%> in program", &atloc);
|
goto retry_after_at;
|
goto retry_after_at;
|
}
|
}
|
break;
|
break;
|
}
|
}
|
|
|
/* FALLTHROUGH */
|
/* FALLTHROUGH */
|
case CPP_HASH:
|
case CPP_HASH:
|
case CPP_PASTE:
|
case CPP_PASTE:
|
{
|
{
|
unsigned char name[4];
|
unsigned char name[4];
|
|
|
*cpp_spell_token (parse_in, tok, name, true) = 0;
|
*cpp_spell_token (parse_in, tok, name, true) = 0;
|
|
|
error ("stray %qs in program", name);
|
error ("stray %qs in program", name);
|
}
|
}
|
|
|
goto retry;
|
goto retry;
|
|
|
case CPP_OTHER:
|
case CPP_OTHER:
|
{
|
{
|
cppchar_t c = tok->val.str.text[0];
|
cppchar_t c = tok->val.str.text[0];
|
|
|
if (c == '"' || c == '\'')
|
if (c == '"' || c == '\'')
|
error ("missing terminating %c character", (int) c);
|
error ("missing terminating %c character", (int) c);
|
else if (ISGRAPH (c))
|
else if (ISGRAPH (c))
|
error ("stray %qc in program", (int) c);
|
error ("stray %qc in program", (int) c);
|
else
|
else
|
error ("stray %<\\%o%> in program", (int) c);
|
error ("stray %<\\%o%> in program", (int) c);
|
}
|
}
|
goto retry;
|
goto retry;
|
|
|
case CPP_CHAR:
|
case CPP_CHAR:
|
case CPP_WCHAR:
|
case CPP_WCHAR:
|
*value = lex_charconst (tok);
|
*value = lex_charconst (tok);
|
break;
|
break;
|
|
|
case CPP_STRING:
|
case CPP_STRING:
|
case CPP_WSTRING:
|
case CPP_WSTRING:
|
if (!c_lex_return_raw_strings)
|
if (!c_lex_return_raw_strings)
|
{
|
{
|
type = lex_string (tok, value, false);
|
type = lex_string (tok, value, false);
|
break;
|
break;
|
}
|
}
|
*value = build_string (tok->val.str.len, (char *) tok->val.str.text);
|
*value = build_string (tok->val.str.len, (char *) tok->val.str.text);
|
break;
|
break;
|
|
|
case CPP_PRAGMA:
|
case CPP_PRAGMA:
|
*value = build_int_cst (NULL, tok->val.pragma);
|
*value = build_int_cst (NULL, tok->val.pragma);
|
break;
|
break;
|
|
|
/* These tokens should not be visible outside cpplib. */
|
/* These tokens should not be visible outside cpplib. */
|
case CPP_HEADER_NAME:
|
case CPP_HEADER_NAME:
|
case CPP_COMMENT:
|
case CPP_COMMENT:
|
case CPP_MACRO_ARG:
|
case CPP_MACRO_ARG:
|
gcc_unreachable ();
|
gcc_unreachable ();
|
|
|
default:
|
default:
|
*value = NULL_TREE;
|
*value = NULL_TREE;
|
break;
|
break;
|
}
|
}
|
|
|
if (cpp_flags)
|
if (cpp_flags)
|
*cpp_flags = tok->flags | add_flags;
|
*cpp_flags = tok->flags | add_flags;
|
|
|
if (!no_more_pch)
|
if (!no_more_pch)
|
{
|
{
|
no_more_pch = true;
|
no_more_pch = true;
|
c_common_no_more_pch ();
|
c_common_no_more_pch ();
|
}
|
}
|
|
|
timevar_pop (TV_CPP);
|
timevar_pop (TV_CPP);
|
|
|
return type;
|
return type;
|
}
|
}
|
|
|
/* Returns the narrowest C-visible unsigned type, starting with the
|
/* Returns the narrowest C-visible unsigned type, starting with the
|
minimum specified by FLAGS, that can fit HIGH:LOW, or itk_none if
|
minimum specified by FLAGS, that can fit HIGH:LOW, or itk_none if
|
there isn't one. */
|
there isn't one. */
|
|
|
static enum integer_type_kind
|
static enum integer_type_kind
|
narrowest_unsigned_type (unsigned HOST_WIDE_INT low,
|
narrowest_unsigned_type (unsigned HOST_WIDE_INT low,
|
unsigned HOST_WIDE_INT high,
|
unsigned HOST_WIDE_INT high,
|
unsigned int flags)
|
unsigned int flags)
|
{
|
{
|
enum integer_type_kind itk;
|
enum integer_type_kind itk;
|
|
|
if ((flags & CPP_N_WIDTH) == CPP_N_SMALL)
|
if ((flags & CPP_N_WIDTH) == CPP_N_SMALL)
|
itk = itk_unsigned_int;
|
itk = itk_unsigned_int;
|
else if ((flags & CPP_N_WIDTH) == CPP_N_MEDIUM)
|
else if ((flags & CPP_N_WIDTH) == CPP_N_MEDIUM)
|
itk = itk_unsigned_long;
|
itk = itk_unsigned_long;
|
else
|
else
|
itk = itk_unsigned_long_long;
|
itk = itk_unsigned_long_long;
|
|
|
for (; itk < itk_none; itk += 2 /* skip unsigned types */)
|
for (; itk < itk_none; itk += 2 /* skip unsigned types */)
|
{
|
{
|
tree upper = TYPE_MAX_VALUE (integer_types[itk]);
|
tree upper = TYPE_MAX_VALUE (integer_types[itk]);
|
|
|
if ((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (upper) > high
|
if ((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (upper) > high
|
|| ((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (upper) == high
|
|| ((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (upper) == high
|
&& TREE_INT_CST_LOW (upper) >= low))
|
&& TREE_INT_CST_LOW (upper) >= low))
|
return itk;
|
return itk;
|
}
|
}
|
|
|
return itk_none;
|
return itk_none;
|
}
|
}
|
|
|
/* Ditto, but narrowest signed type. */
|
/* Ditto, but narrowest signed type. */
|
static enum integer_type_kind
|
static enum integer_type_kind
|
narrowest_signed_type (unsigned HOST_WIDE_INT low,
|
narrowest_signed_type (unsigned HOST_WIDE_INT low,
|
unsigned HOST_WIDE_INT high, unsigned int flags)
|
unsigned HOST_WIDE_INT high, unsigned int flags)
|
{
|
{
|
enum integer_type_kind itk;
|
enum integer_type_kind itk;
|
|
|
if ((flags & CPP_N_WIDTH) == CPP_N_SMALL)
|
if ((flags & CPP_N_WIDTH) == CPP_N_SMALL)
|
itk = itk_int;
|
itk = itk_int;
|
else if ((flags & CPP_N_WIDTH) == CPP_N_MEDIUM)
|
else if ((flags & CPP_N_WIDTH) == CPP_N_MEDIUM)
|
itk = itk_long;
|
itk = itk_long;
|
else
|
else
|
itk = itk_long_long;
|
itk = itk_long_long;
|
|
|
|
|
for (; itk < itk_none; itk += 2 /* skip signed types */)
|
for (; itk < itk_none; itk += 2 /* skip signed types */)
|
{
|
{
|
tree upper = TYPE_MAX_VALUE (integer_types[itk]);
|
tree upper = TYPE_MAX_VALUE (integer_types[itk]);
|
|
|
if ((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (upper) > high
|
if ((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (upper) > high
|
|| ((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (upper) == high
|
|| ((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (upper) == high
|
&& TREE_INT_CST_LOW (upper) >= low))
|
&& TREE_INT_CST_LOW (upper) >= low))
|
return itk;
|
return itk;
|
}
|
}
|
|
|
return itk_none;
|
return itk_none;
|
}
|
}
|
|
|
/* Interpret TOKEN, an integer with FLAGS as classified by cpplib. */
|
/* Interpret TOKEN, an integer with FLAGS as classified by cpplib. */
|
static tree
|
static tree
|
interpret_integer (const cpp_token *token, unsigned int flags)
|
interpret_integer (const cpp_token *token, unsigned int flags)
|
{
|
{
|
tree value, type;
|
tree value, type;
|
enum integer_type_kind itk;
|
enum integer_type_kind itk;
|
cpp_num integer;
|
cpp_num integer;
|
cpp_options *options = cpp_get_options (parse_in);
|
cpp_options *options = cpp_get_options (parse_in);
|
|
|
integer = cpp_interpret_integer (parse_in, token, flags);
|
integer = cpp_interpret_integer (parse_in, token, flags);
|
integer = cpp_num_sign_extend (integer, options->precision);
|
integer = cpp_num_sign_extend (integer, options->precision);
|
|
|
/* The type of a constant with a U suffix is straightforward. */
|
/* The type of a constant with a U suffix is straightforward. */
|
if (flags & CPP_N_UNSIGNED)
|
if (flags & CPP_N_UNSIGNED)
|
itk = narrowest_unsigned_type (integer.low, integer.high, flags);
|
itk = narrowest_unsigned_type (integer.low, integer.high, flags);
|
else
|
else
|
{
|
{
|
/* The type of a potentially-signed integer constant varies
|
/* The type of a potentially-signed integer constant varies
|
depending on the base it's in, the standard in use, and the
|
depending on the base it's in, the standard in use, and the
|
length suffixes. */
|
length suffixes. */
|
enum integer_type_kind itk_u
|
enum integer_type_kind itk_u
|
= narrowest_unsigned_type (integer.low, integer.high, flags);
|
= narrowest_unsigned_type (integer.low, integer.high, flags);
|
enum integer_type_kind itk_s
|
enum integer_type_kind itk_s
|
= narrowest_signed_type (integer.low, integer.high, flags);
|
= narrowest_signed_type (integer.low, integer.high, flags);
|
|
|
/* In both C89 and C99, octal and hex constants may be signed or
|
/* In both C89 and C99, octal and hex constants may be signed or
|
unsigned, whichever fits tighter. We do not warn about this
|
unsigned, whichever fits tighter. We do not warn about this
|
choice differing from the traditional choice, as the constant
|
choice differing from the traditional choice, as the constant
|
is probably a bit pattern and either way will work. */
|
is probably a bit pattern and either way will work. */
|
if ((flags & CPP_N_RADIX) != CPP_N_DECIMAL)
|
if ((flags & CPP_N_RADIX) != CPP_N_DECIMAL)
|
itk = MIN (itk_u, itk_s);
|
itk = MIN (itk_u, itk_s);
|
else
|
else
|
{
|
{
|
/* In C99, decimal constants are always signed.
|
/* In C99, decimal constants are always signed.
|
In C89, decimal constants that don't fit in long have
|
In C89, decimal constants that don't fit in long have
|
undefined behavior; we try to make them unsigned long.
|
undefined behavior; we try to make them unsigned long.
|
In GCC's extended C89, that last is true of decimal
|
In GCC's extended C89, that last is true of decimal
|
constants that don't fit in long long, too. */
|
constants that don't fit in long long, too. */
|
|
|
itk = itk_s;
|
itk = itk_s;
|
if (itk_s > itk_u && itk_s > itk_long)
|
if (itk_s > itk_u && itk_s > itk_long)
|
{
|
{
|
if (!flag_isoc99)
|
if (!flag_isoc99)
|
{
|
{
|
if (itk_u < itk_unsigned_long)
|
if (itk_u < itk_unsigned_long)
|
itk_u = itk_unsigned_long;
|
itk_u = itk_unsigned_long;
|
itk = itk_u;
|
itk = itk_u;
|
warning (0, "this decimal constant is unsigned only in ISO C90");
|
warning (0, "this decimal constant is unsigned only in ISO C90");
|
}
|
}
|
else
|
else
|
warning (OPT_Wtraditional,
|
warning (OPT_Wtraditional,
|
"this decimal constant would be unsigned in ISO C90");
|
"this decimal constant would be unsigned in ISO C90");
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
if (itk == itk_none)
|
if (itk == itk_none)
|
/* cpplib has already issued a warning for overflow. */
|
/* cpplib has already issued a warning for overflow. */
|
type = ((flags & CPP_N_UNSIGNED)
|
type = ((flags & CPP_N_UNSIGNED)
|
? widest_unsigned_literal_type_node
|
? widest_unsigned_literal_type_node
|
: widest_integer_literal_type_node);
|
: widest_integer_literal_type_node);
|
else
|
else
|
type = integer_types[itk];
|
type = integer_types[itk];
|
|
|
if (itk > itk_unsigned_long
|
if (itk > itk_unsigned_long
|
&& (flags & CPP_N_WIDTH) != CPP_N_LARGE
|
&& (flags & CPP_N_WIDTH) != CPP_N_LARGE
|
&& !in_system_header && !flag_isoc99)
|
&& !in_system_header && !flag_isoc99)
|
pedwarn ("integer constant is too large for %qs type",
|
pedwarn ("integer constant is too large for %qs type",
|
(flags & CPP_N_UNSIGNED) ? "unsigned long" : "long");
|
(flags & CPP_N_UNSIGNED) ? "unsigned long" : "long");
|
|
|
value = build_int_cst_wide (type, integer.low, integer.high);
|
value = build_int_cst_wide (type, integer.low, integer.high);
|
|
|
/* Convert imaginary to a complex type. */
|
/* Convert imaginary to a complex type. */
|
if (flags & CPP_N_IMAGINARY)
|
if (flags & CPP_N_IMAGINARY)
|
value = build_complex (NULL_TREE, build_int_cst (type, 0), value);
|
value = build_complex (NULL_TREE, build_int_cst (type, 0), value);
|
|
|
return value;
|
return value;
|
}
|
}
|
|
|
/* Interpret TOKEN, a floating point number with FLAGS as classified
|
/* Interpret TOKEN, a floating point number with FLAGS as classified
|
by cpplib. */
|
by cpplib. */
|
static tree
|
static tree
|
interpret_float (const cpp_token *token, unsigned int flags)
|
interpret_float (const cpp_token *token, unsigned int flags)
|
{
|
{
|
tree type;
|
tree type;
|
tree value;
|
tree value;
|
REAL_VALUE_TYPE real;
|
REAL_VALUE_TYPE real;
|
char *copy;
|
char *copy;
|
size_t copylen;
|
size_t copylen;
|
|
|
/* Decode type based on width and properties. */
|
/* Decode type based on width and properties. */
|
if (flags & CPP_N_DFLOAT)
|
if (flags & CPP_N_DFLOAT)
|
if ((flags & CPP_N_WIDTH) == CPP_N_LARGE)
|
if ((flags & CPP_N_WIDTH) == CPP_N_LARGE)
|
type = dfloat128_type_node;
|
type = dfloat128_type_node;
|
else if ((flags & CPP_N_WIDTH) == CPP_N_SMALL)
|
else if ((flags & CPP_N_WIDTH) == CPP_N_SMALL)
|
type = dfloat32_type_node;
|
type = dfloat32_type_node;
|
else
|
else
|
type = dfloat64_type_node;
|
type = dfloat64_type_node;
|
else
|
else
|
if ((flags & CPP_N_WIDTH) == CPP_N_LARGE)
|
if ((flags & CPP_N_WIDTH) == CPP_N_LARGE)
|
type = long_double_type_node;
|
type = long_double_type_node;
|
else if ((flags & CPP_N_WIDTH) == CPP_N_SMALL
|
else if ((flags & CPP_N_WIDTH) == CPP_N_SMALL
|
|| flag_single_precision_constant)
|
|| flag_single_precision_constant)
|
type = float_type_node;
|
type = float_type_node;
|
else
|
else
|
type = double_type_node;
|
type = double_type_node;
|
|
|
/* Copy the constant to a nul-terminated buffer. If the constant
|
/* Copy the constant to a nul-terminated buffer. If the constant
|
has any suffixes, cut them off; REAL_VALUE_ATOF/ REAL_VALUE_HTOF
|
has any suffixes, cut them off; REAL_VALUE_ATOF/ REAL_VALUE_HTOF
|
can't handle them. */
|
can't handle them. */
|
copylen = token->val.str.len;
|
copylen = token->val.str.len;
|
if (flags & CPP_N_DFLOAT)
|
if (flags & CPP_N_DFLOAT)
|
copylen -= 2;
|
copylen -= 2;
|
else
|
else
|
{
|
{
|
if ((flags & CPP_N_WIDTH) != CPP_N_MEDIUM)
|
if ((flags & CPP_N_WIDTH) != CPP_N_MEDIUM)
|
/* Must be an F or L suffix. */
|
/* Must be an F or L suffix. */
|
copylen--;
|
copylen--;
|
if (flags & CPP_N_IMAGINARY)
|
if (flags & CPP_N_IMAGINARY)
|
/* I or J suffix. */
|
/* I or J suffix. */
|
copylen--;
|
copylen--;
|
}
|
}
|
|
|
copy = (char *) alloca (copylen + 1);
|
copy = (char *) alloca (copylen + 1);
|
memcpy (copy, token->val.str.text, copylen);
|
memcpy (copy, token->val.str.text, copylen);
|
copy[copylen] = '\0';
|
copy[copylen] = '\0';
|
|
|
real_from_string3 (&real, copy, TYPE_MODE (type));
|
real_from_string3 (&real, copy, TYPE_MODE (type));
|
|
|
/* Both C and C++ require a diagnostic for a floating constant
|
/* Both C and C++ require a diagnostic for a floating constant
|
outside the range of representable values of its type. Since we
|
outside the range of representable values of its type. Since we
|
have __builtin_inf* to produce an infinity, it might now be
|
have __builtin_inf* to produce an infinity, it might now be
|
appropriate for this to be a mandatory pedwarn rather than
|
appropriate for this to be a mandatory pedwarn rather than
|
conditioned on -pedantic. */
|
conditioned on -pedantic. */
|
if (REAL_VALUE_ISINF (real) && pedantic)
|
if (REAL_VALUE_ISINF (real) && pedantic)
|
pedwarn ("floating constant exceeds range of %qT", type);
|
pedwarn ("floating constant exceeds range of %qT", type);
|
|
|
/* Create a node with determined type and value. */
|
/* Create a node with determined type and value. */
|
value = build_real (type, real);
|
value = build_real (type, real);
|
if (flags & CPP_N_IMAGINARY)
|
if (flags & CPP_N_IMAGINARY)
|
value = build_complex (NULL_TREE, convert (type, integer_zero_node), value);
|
value = build_complex (NULL_TREE, convert (type, integer_zero_node), value);
|
|
|
return value;
|
return value;
|
}
|
}
|
|
|
/* Convert a series of STRING and/or WSTRING tokens into a tree,
|
/* Convert a series of STRING and/or WSTRING tokens into a tree,
|
performing string constant concatenation. TOK is the first of
|
performing string constant concatenation. TOK is the first of
|
these. VALP is the location to write the string into. OBJC_STRING
|
these. VALP is the location to write the string into. OBJC_STRING
|
indicates whether an '@' token preceded the incoming token.
|
indicates whether an '@' token preceded the incoming token.
|
Returns the CPP token type of the result (CPP_STRING, CPP_WSTRING,
|
Returns the CPP token type of the result (CPP_STRING, CPP_WSTRING,
|
or CPP_OBJC_STRING).
|
or CPP_OBJC_STRING).
|
|
|
This is unfortunately more work than it should be. If any of the
|
This is unfortunately more work than it should be. If any of the
|
strings in the series has an L prefix, the result is a wide string
|
strings in the series has an L prefix, the result is a wide string
|
(6.4.5p4). Whether or not the result is a wide string affects the
|
(6.4.5p4). Whether or not the result is a wide string affects the
|
meaning of octal and hexadecimal escapes (6.4.4.4p6,9). But escape
|
meaning of octal and hexadecimal escapes (6.4.4.4p6,9). But escape
|
sequences do not continue across the boundary between two strings in
|
sequences do not continue across the boundary between two strings in
|
a series (6.4.5p7), so we must not lose the boundaries. Therefore
|
a series (6.4.5p7), so we must not lose the boundaries. Therefore
|
cpp_interpret_string takes a vector of cpp_string structures, which
|
cpp_interpret_string takes a vector of cpp_string structures, which
|
we must arrange to provide. */
|
we must arrange to provide. */
|
|
|
static enum cpp_ttype
|
static enum cpp_ttype
|
lex_string (const cpp_token *tok, tree *valp, bool objc_string)
|
lex_string (const cpp_token *tok, tree *valp, bool objc_string)
|
{
|
{
|
tree value;
|
tree value;
|
bool wide = false;
|
bool wide = false;
|
size_t concats = 0;
|
size_t concats = 0;
|
struct obstack str_ob;
|
struct obstack str_ob;
|
cpp_string istr;
|
cpp_string istr;
|
|
|
/* Try to avoid the overhead of creating and destroying an obstack
|
/* Try to avoid the overhead of creating and destroying an obstack
|
for the common case of just one string. */
|
for the common case of just one string. */
|
cpp_string str = tok->val.str;
|
cpp_string str = tok->val.str;
|
cpp_string *strs = &str;
|
cpp_string *strs = &str;
|
|
|
if (tok->type == CPP_WSTRING)
|
if (tok->type == CPP_WSTRING)
|
wide = true;
|
wide = true;
|
|
|
retry:
|
retry:
|
tok = cpp_get_token (parse_in);
|
tok = cpp_get_token (parse_in);
|
switch (tok->type)
|
switch (tok->type)
|
{
|
{
|
case CPP_PADDING:
|
case CPP_PADDING:
|
goto retry;
|
goto retry;
|
case CPP_ATSIGN:
|
case CPP_ATSIGN:
|
if (c_dialect_objc ())
|
if (c_dialect_objc ())
|
{
|
{
|
objc_string = true;
|
objc_string = true;
|
goto retry;
|
goto retry;
|
}
|
}
|
/* FALLTHROUGH */
|
/* FALLTHROUGH */
|
|
|
default:
|
default:
|
break;
|
break;
|
|
|
case CPP_WSTRING:
|
case CPP_WSTRING:
|
wide = true;
|
wide = true;
|
/* FALLTHROUGH */
|
/* FALLTHROUGH */
|
|
|
case CPP_STRING:
|
case CPP_STRING:
|
if (!concats)
|
if (!concats)
|
{
|
{
|
gcc_obstack_init (&str_ob);
|
gcc_obstack_init (&str_ob);
|
obstack_grow (&str_ob, &str, sizeof (cpp_string));
|
obstack_grow (&str_ob, &str, sizeof (cpp_string));
|
}
|
}
|
|
|
concats++;
|
concats++;
|
obstack_grow (&str_ob, &tok->val.str, sizeof (cpp_string));
|
obstack_grow (&str_ob, &tok->val.str, sizeof (cpp_string));
|
goto retry;
|
goto retry;
|
}
|
}
|
|
|
/* We have read one more token than we want. */
|
/* We have read one more token than we want. */
|
_cpp_backup_tokens (parse_in, 1);
|
_cpp_backup_tokens (parse_in, 1);
|
if (concats)
|
if (concats)
|
strs = XOBFINISH (&str_ob, cpp_string *);
|
strs = XOBFINISH (&str_ob, cpp_string *);
|
|
|
if (concats && !objc_string && !in_system_header)
|
if (concats && !objc_string && !in_system_header)
|
warning (OPT_Wtraditional,
|
warning (OPT_Wtraditional,
|
"traditional C rejects string constant concatenation");
|
"traditional C rejects string constant concatenation");
|
|
|
if ((c_lex_string_translate
|
if ((c_lex_string_translate
|
? cpp_interpret_string : cpp_interpret_string_notranslate)
|
? cpp_interpret_string : cpp_interpret_string_notranslate)
|
(parse_in, strs, concats + 1, &istr, wide))
|
(parse_in, strs, concats + 1, &istr, wide))
|
{
|
{
|
value = build_string (istr.len, (char *) istr.text);
|
value = build_string (istr.len, (char *) istr.text);
|
free ((void *) istr.text);
|
free ((void *) istr.text);
|
|
|
if (c_lex_string_translate == -1)
|
if (c_lex_string_translate == -1)
|
{
|
{
|
int xlated = cpp_interpret_string_notranslate (parse_in, strs,
|
int xlated = cpp_interpret_string_notranslate (parse_in, strs,
|
concats + 1,
|
concats + 1,
|
&istr, wide);
|
&istr, wide);
|
/* Assume that, if we managed to translate the string above,
|
/* Assume that, if we managed to translate the string above,
|
then the untranslated parsing will always succeed. */
|
then the untranslated parsing will always succeed. */
|
gcc_assert (xlated);
|
gcc_assert (xlated);
|
|
|
if (TREE_STRING_LENGTH (value) != (int) istr.len
|
if (TREE_STRING_LENGTH (value) != (int) istr.len
|
|| 0 != strncmp (TREE_STRING_POINTER (value), (char *) istr.text,
|
|| 0 != strncmp (TREE_STRING_POINTER (value), (char *) istr.text,
|
istr.len))
|
istr.len))
|
{
|
{
|
/* Arrange for us to return the untranslated string in
|
/* Arrange for us to return the untranslated string in
|
*valp, but to set up the C type of the translated
|
*valp, but to set up the C type of the translated
|
one. */
|
one. */
|
*valp = build_string (istr.len, (char *) istr.text);
|
*valp = build_string (istr.len, (char *) istr.text);
|
valp = &TREE_CHAIN (*valp);
|
valp = &TREE_CHAIN (*valp);
|
}
|
}
|
free ((void *) istr.text);
|
free ((void *) istr.text);
|
}
|
}
|
}
|
}
|
else
|
else
|
{
|
{
|
/* Callers cannot generally handle error_mark_node in this context,
|
/* Callers cannot generally handle error_mark_node in this context,
|
so return the empty string instead. cpp_interpret_string has
|
so return the empty string instead. cpp_interpret_string has
|
issued an error. */
|
issued an error. */
|
if (wide)
|
if (wide)
|
value = build_string (TYPE_PRECISION (wchar_type_node)
|
value = build_string (TYPE_PRECISION (wchar_type_node)
|
/ TYPE_PRECISION (char_type_node),
|
/ TYPE_PRECISION (char_type_node),
|
"\0\0\0"); /* widest supported wchar_t
|
"\0\0\0"); /* widest supported wchar_t
|
is 32 bits */
|
is 32 bits */
|
else
|
else
|
value = build_string (1, "");
|
value = build_string (1, "");
|
}
|
}
|
|
|
TREE_TYPE (value) = wide ? wchar_array_type_node : char_array_type_node;
|
TREE_TYPE (value) = wide ? wchar_array_type_node : char_array_type_node;
|
*valp = fix_string_type (value);
|
*valp = fix_string_type (value);
|
|
|
if (concats)
|
if (concats)
|
obstack_free (&str_ob, 0);
|
obstack_free (&str_ob, 0);
|
|
|
return objc_string ? CPP_OBJC_STRING : wide ? CPP_WSTRING : CPP_STRING;
|
return objc_string ? CPP_OBJC_STRING : wide ? CPP_WSTRING : CPP_STRING;
|
}
|
}
|
|
|
/* Converts a (possibly wide) character constant token into a tree. */
|
/* Converts a (possibly wide) character constant token into a tree. */
|
static tree
|
static tree
|
lex_charconst (const cpp_token *token)
|
lex_charconst (const cpp_token *token)
|
{
|
{
|
cppchar_t result;
|
cppchar_t result;
|
tree type, value;
|
tree type, value;
|
unsigned int chars_seen;
|
unsigned int chars_seen;
|
int unsignedp;
|
int unsignedp;
|
|
|
result = cpp_interpret_charconst (parse_in, token,
|
result = cpp_interpret_charconst (parse_in, token,
|
&chars_seen, &unsignedp);
|
&chars_seen, &unsignedp);
|
|
|
if (token->type == CPP_WCHAR)
|
if (token->type == CPP_WCHAR)
|
type = wchar_type_node;
|
type = wchar_type_node;
|
/* In C, a character constant has type 'int'.
|
/* In C, a character constant has type 'int'.
|
In C++ 'char', but multi-char charconsts have type 'int'. */
|
In C++ 'char', but multi-char charconsts have type 'int'. */
|
else if (!c_dialect_cxx () || chars_seen > 1)
|
else if (!c_dialect_cxx () || chars_seen > 1)
|
type = integer_type_node;
|
type = integer_type_node;
|
else
|
else
|
type = char_type_node;
|
type = char_type_node;
|
|
|
/* Cast to cppchar_signed_t to get correct sign-extension of RESULT
|
/* Cast to cppchar_signed_t to get correct sign-extension of RESULT
|
before possibly widening to HOST_WIDE_INT for build_int_cst. */
|
before possibly widening to HOST_WIDE_INT for build_int_cst. */
|
if (unsignedp || (cppchar_signed_t) result >= 0)
|
if (unsignedp || (cppchar_signed_t) result >= 0)
|
value = build_int_cst_wide (type, result, 0);
|
value = build_int_cst_wide (type, result, 0);
|
else
|
else
|
value = build_int_cst_wide (type, (cppchar_signed_t) result, -1);
|
value = build_int_cst_wide (type, (cppchar_signed_t) result, -1);
|
|
|
return value;
|
return value;
|
}
|
}
|
|
|
