1088 lines
28 KiB
C
1088 lines
28 KiB
C
/* Mainly the interface between cpplib and the C front ends.
|
||
Copyright (C) 1987, 1988, 1989, 1992, 1994, 1995, 1996, 1997
|
||
1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
|
||
|
||
This file is part of GCC.
|
||
|
||
GCC is free software; you can redistribute it and/or modify it under
|
||
the terms of the GNU General Public License as published by the Free
|
||
Software Foundation; either version 2, or (at your option) any later
|
||
version.
|
||
|
||
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
|
||
WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
||
for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with GCC; see the file COPYING. If not, write to the Free
|
||
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
|
||
02111-1307, USA. */
|
||
|
||
/* $FreeBSD$ */
|
||
|
||
#include "config.h"
|
||
#include "system.h"
|
||
|
||
#include "real.h"
|
||
#include "rtl.h"
|
||
#include "tree.h"
|
||
#include "expr.h"
|
||
#include "input.h"
|
||
#include "output.h"
|
||
#include "c-tree.h"
|
||
#include "c-common.h"
|
||
#include "flags.h"
|
||
#include "timevar.h"
|
||
#include "cpplib.h"
|
||
#include "c-pragma.h"
|
||
#include "toplev.h"
|
||
#include "intl.h"
|
||
#include "tm_p.h"
|
||
#include "splay-tree.h"
|
||
#include "debug.h"
|
||
|
||
#ifdef MULTIBYTE_CHARS
|
||
#include "mbchar.h"
|
||
#include <locale.h>
|
||
#endif /* MULTIBYTE_CHARS */
|
||
|
||
/* The current line map. */
|
||
static const struct line_map *map;
|
||
|
||
/* The line used to refresh the lineno global variable after each token. */
|
||
static unsigned int src_lineno;
|
||
|
||
/* We may keep statistics about how long which files took to compile. */
|
||
static int header_time, body_time;
|
||
static splay_tree file_info_tree;
|
||
|
||
/* File used for outputting assembler code. */
|
||
extern FILE *asm_out_file;
|
||
|
||
#undef WCHAR_TYPE_SIZE
|
||
#define WCHAR_TYPE_SIZE TYPE_PRECISION (wchar_type_node)
|
||
|
||
/* Number of bytes in a wide character. */
|
||
#define WCHAR_BYTES (WCHAR_TYPE_SIZE / BITS_PER_UNIT)
|
||
|
||
int pending_lang_change; /* If we need to switch languages - C++ only */
|
||
int c_header_level; /* depth in C headers - C++ only */
|
||
|
||
/* Nonzero tells yylex to ignore \ in string constants. */
|
||
static int ignore_escape_flag;
|
||
|
||
static tree interpret_integer PARAMS ((const cpp_token *, unsigned int));
|
||
static tree interpret_float PARAMS ((const cpp_token *, unsigned int));
|
||
static enum integer_type_kind
|
||
narrowest_unsigned_type PARAMS ((tree, unsigned int));
|
||
static enum integer_type_kind
|
||
narrowest_signed_type PARAMS ((tree, unsigned int));
|
||
static tree lex_string PARAMS ((const unsigned char *, unsigned int,
|
||
int));
|
||
static tree lex_charconst PARAMS ((const cpp_token *));
|
||
static void update_header_times PARAMS ((const char *));
|
||
static int dump_one_header PARAMS ((splay_tree_node, void *));
|
||
static void cb_line_change PARAMS ((cpp_reader *, const cpp_token *, int));
|
||
static void cb_ident PARAMS ((cpp_reader *, unsigned int,
|
||
const cpp_string *));
|
||
static void cb_file_change PARAMS ((cpp_reader *, const struct line_map *));
|
||
static void cb_def_pragma PARAMS ((cpp_reader *, unsigned int));
|
||
static void cb_define PARAMS ((cpp_reader *, unsigned int,
|
||
cpp_hashnode *));
|
||
static void cb_undef PARAMS ((cpp_reader *, unsigned int,
|
||
cpp_hashnode *));
|
||
|
||
const char *
|
||
init_c_lex (filename)
|
||
const char *filename;
|
||
{
|
||
struct cpp_callbacks *cb;
|
||
struct c_fileinfo *toplevel;
|
||
|
||
/* Set up filename timing. Must happen before cpp_read_main_file. */
|
||
file_info_tree = splay_tree_new ((splay_tree_compare_fn)strcmp,
|
||
0,
|
||
(splay_tree_delete_value_fn)free);
|
||
toplevel = get_fileinfo ("<top level>");
|
||
if (flag_detailed_statistics)
|
||
{
|
||
header_time = 0;
|
||
body_time = get_run_time ();
|
||
toplevel->time = body_time;
|
||
}
|
||
|
||
#ifdef MULTIBYTE_CHARS
|
||
/* Change to the native locale for multibyte conversions. */
|
||
setlocale (LC_CTYPE, "");
|
||
GET_ENVIRONMENT (literal_codeset, "LANG");
|
||
#endif
|
||
|
||
cb = cpp_get_callbacks (parse_in);
|
||
|
||
cb->line_change = cb_line_change;
|
||
cb->ident = cb_ident;
|
||
cb->file_change = cb_file_change;
|
||
cb->def_pragma = cb_def_pragma;
|
||
|
||
/* Set the debug callbacks if we can use them. */
|
||
if (debug_info_level == DINFO_LEVEL_VERBOSE
|
||
&& (write_symbols == DWARF_DEBUG || write_symbols == DWARF2_DEBUG
|
||
|| write_symbols == VMS_AND_DWARF2_DEBUG))
|
||
{
|
||
cb->define = cb_define;
|
||
cb->undef = cb_undef;
|
||
}
|
||
|
||
/* Start it at 0. */
|
||
lineno = 0;
|
||
|
||
return cpp_read_main_file (parse_in, filename, ident_hash);
|
||
}
|
||
|
||
/* A thin wrapper around the real parser that initializes the
|
||
integrated preprocessor after debug output has been initialized.
|
||
Also, make sure the start_source_file debug hook gets called for
|
||
the primary source file. */
|
||
|
||
void
|
||
c_common_parse_file (set_yydebug)
|
||
int set_yydebug ATTRIBUTE_UNUSED;
|
||
{
|
||
#if YYDEBUG != 0
|
||
yydebug = set_yydebug;
|
||
#else
|
||
warning ("YYDEBUG not defined");
|
||
#endif
|
||
|
||
(*debug_hooks->start_source_file) (lineno, input_filename);
|
||
cpp_finish_options (parse_in);
|
||
|
||
yyparse ();
|
||
free_parser_stacks ();
|
||
}
|
||
|
||
struct c_fileinfo *
|
||
get_fileinfo (name)
|
||
const char *name;
|
||
{
|
||
splay_tree_node n;
|
||
struct c_fileinfo *fi;
|
||
|
||
n = splay_tree_lookup (file_info_tree, (splay_tree_key) name);
|
||
if (n)
|
||
return (struct c_fileinfo *) n->value;
|
||
|
||
fi = (struct c_fileinfo *) xmalloc (sizeof (struct c_fileinfo));
|
||
fi->time = 0;
|
||
fi->interface_only = 0;
|
||
fi->interface_unknown = 1;
|
||
splay_tree_insert (file_info_tree, (splay_tree_key) name,
|
||
(splay_tree_value) fi);
|
||
return fi;
|
||
}
|
||
|
||
static void
|
||
update_header_times (name)
|
||
const char *name;
|
||
{
|
||
/* Changing files again. This means currently collected time
|
||
is charged against header time, and body time starts back at 0. */
|
||
if (flag_detailed_statistics)
|
||
{
|
||
int this_time = get_run_time ();
|
||
struct c_fileinfo *file = get_fileinfo (name);
|
||
header_time += this_time - body_time;
|
||
file->time += this_time - body_time;
|
||
body_time = this_time;
|
||
}
|
||
}
|
||
|
||
static int
|
||
dump_one_header (n, dummy)
|
||
splay_tree_node n;
|
||
void *dummy ATTRIBUTE_UNUSED;
|
||
{
|
||
print_time ((const char *) n->key,
|
||
((struct c_fileinfo *) n->value)->time);
|
||
return 0;
|
||
}
|
||
|
||
void
|
||
dump_time_statistics ()
|
||
{
|
||
struct c_fileinfo *file = get_fileinfo (input_filename);
|
||
int this_time = get_run_time ();
|
||
file->time += this_time - body_time;
|
||
|
||
fprintf (stderr, "\n******\n");
|
||
print_time ("header files (total)", header_time);
|
||
print_time ("main file (total)", this_time - body_time);
|
||
fprintf (stderr, "ratio = %g : 1\n",
|
||
(double)header_time / (double)(this_time - body_time));
|
||
fprintf (stderr, "\n******\n");
|
||
|
||
splay_tree_foreach (file_info_tree, dump_one_header, 0);
|
||
}
|
||
|
||
static void
|
||
cb_ident (pfile, line, str)
|
||
cpp_reader *pfile ATTRIBUTE_UNUSED;
|
||
unsigned int line ATTRIBUTE_UNUSED;
|
||
const cpp_string *str ATTRIBUTE_UNUSED;
|
||
{
|
||
#ifdef ASM_OUTPUT_IDENT
|
||
if (! flag_no_ident)
|
||
{
|
||
/* Convert escapes in the string. */
|
||
tree value = lex_string (str->text, str->len, 0);
|
||
ASM_OUTPUT_IDENT (asm_out_file, TREE_STRING_POINTER (value));
|
||
}
|
||
#endif
|
||
}
|
||
|
||
/* Called at the start of every non-empty line. TOKEN is the first
|
||
lexed token on the line. Used for diagnostic line numbers. */
|
||
static void
|
||
cb_line_change (pfile, token, parsing_args)
|
||
cpp_reader *pfile ATTRIBUTE_UNUSED;
|
||
const cpp_token *token;
|
||
int parsing_args ATTRIBUTE_UNUSED;
|
||
{
|
||
src_lineno = SOURCE_LINE (map, token->line);
|
||
}
|
||
|
||
static void
|
||
cb_file_change (pfile, new_map)
|
||
cpp_reader *pfile ATTRIBUTE_UNUSED;
|
||
const struct line_map *new_map;
|
||
{
|
||
unsigned int to_line = SOURCE_LINE (new_map, new_map->to_line);
|
||
|
||
if (new_map->reason == LC_ENTER)
|
||
{
|
||
/* Don't stack the main buffer on the input stack;
|
||
we already did in compile_file. */
|
||
if (map == NULL)
|
||
main_input_filename = new_map->to_file;
|
||
else
|
||
{
|
||
int included_at = SOURCE_LINE (new_map - 1, new_map->from_line - 1);
|
||
|
||
lineno = included_at;
|
||
push_srcloc (new_map->to_file, 1);
|
||
(*debug_hooks->start_source_file) (included_at, new_map->to_file);
|
||
#ifndef NO_IMPLICIT_EXTERN_C
|
||
if (c_header_level)
|
||
++c_header_level;
|
||
else if (new_map->sysp == 2)
|
||
{
|
||
c_header_level = 1;
|
||
++pending_lang_change;
|
||
}
|
||
#endif
|
||
}
|
||
}
|
||
else if (new_map->reason == LC_LEAVE)
|
||
{
|
||
#ifndef NO_IMPLICIT_EXTERN_C
|
||
if (c_header_level && --c_header_level == 0)
|
||
{
|
||
if (new_map->sysp == 2)
|
||
warning ("badly nested C headers from preprocessor");
|
||
--pending_lang_change;
|
||
}
|
||
#endif
|
||
pop_srcloc ();
|
||
|
||
(*debug_hooks->end_source_file) (to_line);
|
||
}
|
||
|
||
update_header_times (new_map->to_file);
|
||
#ifndef FREEBSD_NATIVE
|
||
in_system_header = new_map->sysp != 0;
|
||
#else /* FREEBSD_NATIVE */
|
||
in_system_header = 0;
|
||
#endif /* FREEBSD_NATIVE */
|
||
input_filename = new_map->to_file;
|
||
lineno = to_line;
|
||
map = new_map;
|
||
|
||
/* Hook for C++. */
|
||
extract_interface_info ();
|
||
}
|
||
|
||
static void
|
||
cb_def_pragma (pfile, line)
|
||
cpp_reader *pfile;
|
||
unsigned int line;
|
||
{
|
||
/* Issue a warning message if we have been asked to do so. Ignore
|
||
unknown pragmas in system headers unless an explicit
|
||
-Wunknown-pragmas has been given. */
|
||
if (warn_unknown_pragmas > in_system_header)
|
||
{
|
||
const unsigned char *space, *name;
|
||
const cpp_token *s;
|
||
|
||
space = name = (const unsigned char *) "";
|
||
s = cpp_get_token (pfile);
|
||
if (s->type != CPP_EOF)
|
||
{
|
||
space = cpp_token_as_text (pfile, s);
|
||
s = cpp_get_token (pfile);
|
||
if (s->type == CPP_NAME)
|
||
name = cpp_token_as_text (pfile, s);
|
||
}
|
||
|
||
lineno = SOURCE_LINE (map, line);
|
||
warning ("ignoring #pragma %s %s", space, name);
|
||
}
|
||
}
|
||
|
||
/* #define callback for DWARF and DWARF2 debug info. */
|
||
static void
|
||
cb_define (pfile, line, node)
|
||
cpp_reader *pfile;
|
||
unsigned int line;
|
||
cpp_hashnode *node;
|
||
{
|
||
(*debug_hooks->define) (SOURCE_LINE (map, line),
|
||
(const char *) cpp_macro_definition (pfile, node));
|
||
}
|
||
|
||
/* #undef callback for DWARF and DWARF2 debug info. */
|
||
static void
|
||
cb_undef (pfile, line, node)
|
||
cpp_reader *pfile ATTRIBUTE_UNUSED;
|
||
unsigned int line;
|
||
cpp_hashnode *node;
|
||
{
|
||
(*debug_hooks->undef) (SOURCE_LINE (map, line),
|
||
(const char *) NODE_NAME (node));
|
||
}
|
||
|
||
#if 0 /* not yet */
|
||
/* Returns nonzero if C is a universal-character-name. Give an error if it
|
||
is not one which may appear in an identifier, as per [extendid].
|
||
|
||
Note that extended character support in identifiers has not yet been
|
||
implemented. It is my personal opinion that this is not a desirable
|
||
feature. Portable code cannot count on support for more than the basic
|
||
identifier character set. */
|
||
|
||
static inline int
|
||
is_extended_char (c)
|
||
int c;
|
||
{
|
||
#ifdef TARGET_EBCDIC
|
||
return 0;
|
||
#else
|
||
/* ASCII. */
|
||
if (c < 0x7f)
|
||
return 0;
|
||
|
||
/* None of the valid chars are outside the Basic Multilingual Plane (the
|
||
low 16 bits). */
|
||
if (c > 0xffff)
|
||
{
|
||
error ("universal-character-name '\\U%08x' not valid in identifier", c);
|
||
return 1;
|
||
}
|
||
|
||
/* Latin */
|
||
if ((c >= 0x00c0 && c <= 0x00d6)
|
||
|| (c >= 0x00d8 && c <= 0x00f6)
|
||
|| (c >= 0x00f8 && c <= 0x01f5)
|
||
|| (c >= 0x01fa && c <= 0x0217)
|
||
|| (c >= 0x0250 && c <= 0x02a8)
|
||
|| (c >= 0x1e00 && c <= 0x1e9a)
|
||
|| (c >= 0x1ea0 && c <= 0x1ef9))
|
||
return 1;
|
||
|
||
/* Greek */
|
||
if ((c == 0x0384)
|
||
|| (c >= 0x0388 && c <= 0x038a)
|
||
|| (c == 0x038c)
|
||
|| (c >= 0x038e && c <= 0x03a1)
|
||
|| (c >= 0x03a3 && c <= 0x03ce)
|
||
|| (c >= 0x03d0 && c <= 0x03d6)
|
||
|| (c == 0x03da)
|
||
|| (c == 0x03dc)
|
||
|| (c == 0x03de)
|
||
|| (c == 0x03e0)
|
||
|| (c >= 0x03e2 && c <= 0x03f3)
|
||
|| (c >= 0x1f00 && c <= 0x1f15)
|
||
|| (c >= 0x1f18 && c <= 0x1f1d)
|
||
|| (c >= 0x1f20 && c <= 0x1f45)
|
||
|| (c >= 0x1f48 && c <= 0x1f4d)
|
||
|| (c >= 0x1f50 && c <= 0x1f57)
|
||
|| (c == 0x1f59)
|
||
|| (c == 0x1f5b)
|
||
|| (c == 0x1f5d)
|
||
|| (c >= 0x1f5f && c <= 0x1f7d)
|
||
|| (c >= 0x1f80 && c <= 0x1fb4)
|
||
|| (c >= 0x1fb6 && c <= 0x1fbc)
|
||
|| (c >= 0x1fc2 && c <= 0x1fc4)
|
||
|| (c >= 0x1fc6 && c <= 0x1fcc)
|
||
|| (c >= 0x1fd0 && c <= 0x1fd3)
|
||
|| (c >= 0x1fd6 && c <= 0x1fdb)
|
||
|| (c >= 0x1fe0 && c <= 0x1fec)
|
||
|| (c >= 0x1ff2 && c <= 0x1ff4)
|
||
|| (c >= 0x1ff6 && c <= 0x1ffc))
|
||
return 1;
|
||
|
||
/* Cyrillic */
|
||
if ((c >= 0x0401 && c <= 0x040d)
|
||
|| (c >= 0x040f && c <= 0x044f)
|
||
|| (c >= 0x0451 && c <= 0x045c)
|
||
|| (c >= 0x045e && c <= 0x0481)
|
||
|| (c >= 0x0490 && c <= 0x04c4)
|
||
|| (c >= 0x04c7 && c <= 0x04c8)
|
||
|| (c >= 0x04cb && c <= 0x04cc)
|
||
|| (c >= 0x04d0 && c <= 0x04eb)
|
||
|| (c >= 0x04ee && c <= 0x04f5)
|
||
|| (c >= 0x04f8 && c <= 0x04f9))
|
||
return 1;
|
||
|
||
/* Armenian */
|
||
if ((c >= 0x0531 && c <= 0x0556)
|
||
|| (c >= 0x0561 && c <= 0x0587))
|
||
return 1;
|
||
|
||
/* Hebrew */
|
||
if ((c >= 0x05d0 && c <= 0x05ea)
|
||
|| (c >= 0x05f0 && c <= 0x05f4))
|
||
return 1;
|
||
|
||
/* Arabic */
|
||
if ((c >= 0x0621 && c <= 0x063a)
|
||
|| (c >= 0x0640 && c <= 0x0652)
|
||
|| (c >= 0x0670 && c <= 0x06b7)
|
||
|| (c >= 0x06ba && c <= 0x06be)
|
||
|| (c >= 0x06c0 && c <= 0x06ce)
|
||
|| (c >= 0x06e5 && c <= 0x06e7))
|
||
return 1;
|
||
|
||
/* Devanagari */
|
||
if ((c >= 0x0905 && c <= 0x0939)
|
||
|| (c >= 0x0958 && c <= 0x0962))
|
||
return 1;
|
||
|
||
/* Bengali */
|
||
if ((c >= 0x0985 && c <= 0x098c)
|
||
|| (c >= 0x098f && c <= 0x0990)
|
||
|| (c >= 0x0993 && c <= 0x09a8)
|
||
|| (c >= 0x09aa && c <= 0x09b0)
|
||
|| (c == 0x09b2)
|
||
|| (c >= 0x09b6 && c <= 0x09b9)
|
||
|| (c >= 0x09dc && c <= 0x09dd)
|
||
|| (c >= 0x09df && c <= 0x09e1)
|
||
|| (c >= 0x09f0 && c <= 0x09f1))
|
||
return 1;
|
||
|
||
/* Gurmukhi */
|
||
if ((c >= 0x0a05 && c <= 0x0a0a)
|
||
|| (c >= 0x0a0f && c <= 0x0a10)
|
||
|| (c >= 0x0a13 && c <= 0x0a28)
|
||
|| (c >= 0x0a2a && c <= 0x0a30)
|
||
|| (c >= 0x0a32 && c <= 0x0a33)
|
||
|| (c >= 0x0a35 && c <= 0x0a36)
|
||
|| (c >= 0x0a38 && c <= 0x0a39)
|
||
|| (c >= 0x0a59 && c <= 0x0a5c)
|
||
|| (c == 0x0a5e))
|
||
return 1;
|
||
|
||
/* Gujarati */
|
||
if ((c >= 0x0a85 && c <= 0x0a8b)
|
||
|| (c == 0x0a8d)
|
||
|| (c >= 0x0a8f && c <= 0x0a91)
|
||
|| (c >= 0x0a93 && c <= 0x0aa8)
|
||
|| (c >= 0x0aaa && c <= 0x0ab0)
|
||
|| (c >= 0x0ab2 && c <= 0x0ab3)
|
||
|| (c >= 0x0ab5 && c <= 0x0ab9)
|
||
|| (c == 0x0ae0))
|
||
return 1;
|
||
|
||
/* Oriya */
|
||
if ((c >= 0x0b05 && c <= 0x0b0c)
|
||
|| (c >= 0x0b0f && c <= 0x0b10)
|
||
|| (c >= 0x0b13 && c <= 0x0b28)
|
||
|| (c >= 0x0b2a && c <= 0x0b30)
|
||
|| (c >= 0x0b32 && c <= 0x0b33)
|
||
|| (c >= 0x0b36 && c <= 0x0b39)
|
||
|| (c >= 0x0b5c && c <= 0x0b5d)
|
||
|| (c >= 0x0b5f && c <= 0x0b61))
|
||
return 1;
|
||
|
||
/* Tamil */
|
||
if ((c >= 0x0b85 && c <= 0x0b8a)
|
||
|| (c >= 0x0b8e && c <= 0x0b90)
|
||
|| (c >= 0x0b92 && c <= 0x0b95)
|
||
|| (c >= 0x0b99 && c <= 0x0b9a)
|
||
|| (c == 0x0b9c)
|
||
|| (c >= 0x0b9e && c <= 0x0b9f)
|
||
|| (c >= 0x0ba3 && c <= 0x0ba4)
|
||
|| (c >= 0x0ba8 && c <= 0x0baa)
|
||
|| (c >= 0x0bae && c <= 0x0bb5)
|
||
|| (c >= 0x0bb7 && c <= 0x0bb9))
|
||
return 1;
|
||
|
||
/* Telugu */
|
||
if ((c >= 0x0c05 && c <= 0x0c0c)
|
||
|| (c >= 0x0c0e && c <= 0x0c10)
|
||
|| (c >= 0x0c12 && c <= 0x0c28)
|
||
|| (c >= 0x0c2a && c <= 0x0c33)
|
||
|| (c >= 0x0c35 && c <= 0x0c39)
|
||
|| (c >= 0x0c60 && c <= 0x0c61))
|
||
return 1;
|
||
|
||
/* Kannada */
|
||
if ((c >= 0x0c85 && c <= 0x0c8c)
|
||
|| (c >= 0x0c8e && c <= 0x0c90)
|
||
|| (c >= 0x0c92 && c <= 0x0ca8)
|
||
|| (c >= 0x0caa && c <= 0x0cb3)
|
||
|| (c >= 0x0cb5 && c <= 0x0cb9)
|
||
|| (c >= 0x0ce0 && c <= 0x0ce1))
|
||
return 1;
|
||
|
||
/* Malayalam */
|
||
if ((c >= 0x0d05 && c <= 0x0d0c)
|
||
|| (c >= 0x0d0e && c <= 0x0d10)
|
||
|| (c >= 0x0d12 && c <= 0x0d28)
|
||
|| (c >= 0x0d2a && c <= 0x0d39)
|
||
|| (c >= 0x0d60 && c <= 0x0d61))
|
||
return 1;
|
||
|
||
/* Thai */
|
||
if ((c >= 0x0e01 && c <= 0x0e30)
|
||
|| (c >= 0x0e32 && c <= 0x0e33)
|
||
|| (c >= 0x0e40 && c <= 0x0e46)
|
||
|| (c >= 0x0e4f && c <= 0x0e5b))
|
||
return 1;
|
||
|
||
/* Lao */
|
||
if ((c >= 0x0e81 && c <= 0x0e82)
|
||
|| (c == 0x0e84)
|
||
|| (c == 0x0e87)
|
||
|| (c == 0x0e88)
|
||
|| (c == 0x0e8a)
|
||
|| (c == 0x0e0d)
|
||
|| (c >= 0x0e94 && c <= 0x0e97)
|
||
|| (c >= 0x0e99 && c <= 0x0e9f)
|
||
|| (c >= 0x0ea1 && c <= 0x0ea3)
|
||
|| (c == 0x0ea5)
|
||
|| (c == 0x0ea7)
|
||
|| (c == 0x0eaa)
|
||
|| (c == 0x0eab)
|
||
|| (c >= 0x0ead && c <= 0x0eb0)
|
||
|| (c == 0x0eb2)
|
||
|| (c == 0x0eb3)
|
||
|| (c == 0x0ebd)
|
||
|| (c >= 0x0ec0 && c <= 0x0ec4)
|
||
|| (c == 0x0ec6))
|
||
return 1;
|
||
|
||
/* Georgian */
|
||
if ((c >= 0x10a0 && c <= 0x10c5)
|
||
|| (c >= 0x10d0 && c <= 0x10f6))
|
||
return 1;
|
||
|
||
/* Hiragana */
|
||
if ((c >= 0x3041 && c <= 0x3094)
|
||
|| (c >= 0x309b && c <= 0x309e))
|
||
return 1;
|
||
|
||
/* Katakana */
|
||
if ((c >= 0x30a1 && c <= 0x30fe))
|
||
return 1;
|
||
|
||
/* Bopmofo */
|
||
if ((c >= 0x3105 && c <= 0x312c))
|
||
return 1;
|
||
|
||
/* Hangul */
|
||
if ((c >= 0x1100 && c <= 0x1159)
|
||
|| (c >= 0x1161 && c <= 0x11a2)
|
||
|| (c >= 0x11a8 && c <= 0x11f9))
|
||
return 1;
|
||
|
||
/* CJK Unified Ideographs */
|
||
if ((c >= 0xf900 && c <= 0xfa2d)
|
||
|| (c >= 0xfb1f && c <= 0xfb36)
|
||
|| (c >= 0xfb38 && c <= 0xfb3c)
|
||
|| (c == 0xfb3e)
|
||
|| (c >= 0xfb40 && c <= 0xfb41)
|
||
|| (c >= 0xfb42 && c <= 0xfb44)
|
||
|| (c >= 0xfb46 && c <= 0xfbb1)
|
||
|| (c >= 0xfbd3 && c <= 0xfd3f)
|
||
|| (c >= 0xfd50 && c <= 0xfd8f)
|
||
|| (c >= 0xfd92 && c <= 0xfdc7)
|
||
|| (c >= 0xfdf0 && c <= 0xfdfb)
|
||
|| (c >= 0xfe70 && c <= 0xfe72)
|
||
|| (c == 0xfe74)
|
||
|| (c >= 0xfe76 && c <= 0xfefc)
|
||
|| (c >= 0xff21 && c <= 0xff3a)
|
||
|| (c >= 0xff41 && c <= 0xff5a)
|
||
|| (c >= 0xff66 && c <= 0xffbe)
|
||
|| (c >= 0xffc2 && c <= 0xffc7)
|
||
|| (c >= 0xffca && c <= 0xffcf)
|
||
|| (c >= 0xffd2 && c <= 0xffd7)
|
||
|| (c >= 0xffda && c <= 0xffdc)
|
||
|| (c >= 0x4e00 && c <= 0x9fa5))
|
||
return 1;
|
||
|
||
error ("universal-character-name '\\u%04x' not valid in identifier", c);
|
||
return 1;
|
||
#endif
|
||
}
|
||
|
||
/* Add the UTF-8 representation of C to the token_buffer. */
|
||
|
||
static void
|
||
utf8_extend_token (c)
|
||
int c;
|
||
{
|
||
int shift, mask;
|
||
|
||
if (c <= 0x0000007f)
|
||
{
|
||
extend_token (c);
|
||
return;
|
||
}
|
||
else if (c <= 0x000007ff)
|
||
shift = 6, mask = 0xc0;
|
||
else if (c <= 0x0000ffff)
|
||
shift = 12, mask = 0xe0;
|
||
else if (c <= 0x001fffff)
|
||
shift = 18, mask = 0xf0;
|
||
else if (c <= 0x03ffffff)
|
||
shift = 24, mask = 0xf8;
|
||
else
|
||
shift = 30, mask = 0xfc;
|
||
|
||
extend_token (mask | (c >> shift));
|
||
do
|
||
{
|
||
shift -= 6;
|
||
extend_token ((unsigned char) (0x80 | (c >> shift)));
|
||
}
|
||
while (shift);
|
||
}
|
||
#endif
|
||
|
||
int
|
||
c_lex (value)
|
||
tree *value;
|
||
{
|
||
const cpp_token *tok;
|
||
|
||
retry:
|
||
timevar_push (TV_CPP);
|
||
do
|
||
tok = cpp_get_token (parse_in);
|
||
while (tok->type == CPP_PADDING);
|
||
timevar_pop (TV_CPP);
|
||
|
||
/* The C++ front end does horrible things with the current line
|
||
number. To ensure an accurate line number, we must reset it
|
||
every time we return a token. */
|
||
lineno = src_lineno;
|
||
|
||
*value = NULL_TREE;
|
||
switch (tok->type)
|
||
{
|
||
/* Issue this error here, where we can get at tok->val.c. */
|
||
case CPP_OTHER:
|
||
if (ISGRAPH (tok->val.c))
|
||
error ("stray '%c' in program", tok->val.c);
|
||
else
|
||
error ("stray '\\%o' in program", tok->val.c);
|
||
goto retry;
|
||
|
||
case CPP_NAME:
|
||
*value = HT_IDENT_TO_GCC_IDENT (HT_NODE (tok->val.node));
|
||
break;
|
||
|
||
case CPP_NUMBER:
|
||
{
|
||
unsigned int flags = cpp_classify_number (parse_in, tok);
|
||
|
||
switch (flags & CPP_N_CATEGORY)
|
||
{
|
||
case CPP_N_INVALID:
|
||
/* cpplib has issued an error. */
|
||
*value = error_mark_node;
|
||
break;
|
||
|
||
case CPP_N_INTEGER:
|
||
*value = interpret_integer (tok, flags);
|
||
break;
|
||
|
||
case CPP_N_FLOATING:
|
||
*value = interpret_float (tok, flags);
|
||
break;
|
||
|
||
default:
|
||
abort ();
|
||
}
|
||
}
|
||
break;
|
||
|
||
case CPP_CHAR:
|
||
case CPP_WCHAR:
|
||
*value = lex_charconst (tok);
|
||
break;
|
||
|
||
case CPP_STRING:
|
||
case CPP_WSTRING:
|
||
*value = lex_string (tok->val.str.text, tok->val.str.len,
|
||
tok->type == CPP_WSTRING);
|
||
break;
|
||
|
||
/* These tokens should not be visible outside cpplib. */
|
||
case CPP_HEADER_NAME:
|
||
case CPP_COMMENT:
|
||
case CPP_MACRO_ARG:
|
||
abort ();
|
||
|
||
default: break;
|
||
}
|
||
|
||
return tok->type;
|
||
}
|
||
|
||
/* Returns the narrowest C-visible unsigned type, starting with the
|
||
minimum specified by FLAGS, that can fit VALUE, or itk_none if
|
||
there isn't one. */
|
||
static enum integer_type_kind
|
||
narrowest_unsigned_type (value, flags)
|
||
tree value;
|
||
unsigned int flags;
|
||
{
|
||
enum integer_type_kind itk;
|
||
|
||
if ((flags & CPP_N_WIDTH) == CPP_N_SMALL)
|
||
itk = itk_unsigned_int;
|
||
else if ((flags & CPP_N_WIDTH) == CPP_N_MEDIUM)
|
||
itk = itk_unsigned_long;
|
||
else
|
||
itk = itk_unsigned_long_long;
|
||
|
||
/* int_fits_type_p must think the type of its first argument is
|
||
wider than its second argument, or it won't do the proper check. */
|
||
TREE_TYPE (value) = widest_unsigned_literal_type_node;
|
||
|
||
for (; itk < itk_none; itk += 2 /* skip unsigned types */)
|
||
if (int_fits_type_p (value, integer_types[itk]))
|
||
return itk;
|
||
|
||
return itk_none;
|
||
}
|
||
|
||
/* Ditto, but narrowest signed type. */
|
||
static enum integer_type_kind
|
||
narrowest_signed_type (value, flags)
|
||
tree value;
|
||
unsigned int flags;
|
||
{
|
||
enum integer_type_kind itk;
|
||
|
||
if ((flags & CPP_N_WIDTH) == CPP_N_SMALL)
|
||
itk = itk_int;
|
||
else if ((flags & CPP_N_WIDTH) == CPP_N_MEDIUM)
|
||
itk = itk_long;
|
||
else
|
||
itk = itk_long_long;
|
||
|
||
/* int_fits_type_p must think the type of its first argument is
|
||
wider than its second argument, or it won't do the proper check. */
|
||
TREE_TYPE (value) = widest_unsigned_literal_type_node;
|
||
|
||
for (; itk < itk_none; itk += 2 /* skip signed types */)
|
||
if (int_fits_type_p (value, integer_types[itk]))
|
||
return itk;
|
||
|
||
return itk_none;
|
||
}
|
||
|
||
/* Interpret TOKEN, an integer with FLAGS as classified by cpplib. */
|
||
static tree
|
||
interpret_integer (token, flags)
|
||
const cpp_token *token;
|
||
unsigned int flags;
|
||
{
|
||
tree value, type;
|
||
enum integer_type_kind itk;
|
||
cpp_num integer;
|
||
cpp_options *options = cpp_get_options (parse_in);
|
||
|
||
integer = cpp_interpret_integer (parse_in, token, flags);
|
||
integer = cpp_num_sign_extend (integer, options->precision);
|
||
value = build_int_2_wide (integer.low, integer.high);
|
||
|
||
/* The type of a constant with a U suffix is straightforward. */
|
||
if (flags & CPP_N_UNSIGNED)
|
||
itk = narrowest_unsigned_type (value, flags);
|
||
else
|
||
{
|
||
/* The type of a potentially-signed integer constant varies
|
||
depending on the base it's in, the standard in use, and the
|
||
length suffixes. */
|
||
enum integer_type_kind itk_u = narrowest_unsigned_type (value, flags);
|
||
enum integer_type_kind itk_s = narrowest_signed_type (value, flags);
|
||
|
||
/* In both C89 and C99, octal and hex constants may be signed or
|
||
unsigned, whichever fits tighter. We do not warn about this
|
||
choice differing from the traditional choice, as the constant
|
||
is probably a bit pattern and either way will work. */
|
||
if ((flags & CPP_N_RADIX) != CPP_N_DECIMAL)
|
||
itk = MIN (itk_u, itk_s);
|
||
else
|
||
{
|
||
/* In C99, decimal constants are always signed.
|
||
In C89, decimal constants that don't fit in long have
|
||
undefined behavior; we try to make them unsigned long.
|
||
In GCC's extended C89, that last is true of decimal
|
||
constants that don't fit in long long, too. */
|
||
|
||
itk = itk_s;
|
||
if (itk_s > itk_u && itk_s > itk_long)
|
||
{
|
||
if (!flag_isoc99)
|
||
{
|
||
if (itk_u < itk_unsigned_long)
|
||
itk_u = itk_unsigned_long;
|
||
itk = itk_u;
|
||
warning ("this decimal constant is unsigned only in ISO C90");
|
||
}
|
||
else if (warn_traditional)
|
||
warning ("this decimal constant would be unsigned in ISO C90");
|
||
}
|
||
}
|
||
}
|
||
|
||
if (itk == itk_none)
|
||
/* cpplib has already issued a warning for overflow. */
|
||
type = ((flags & CPP_N_UNSIGNED)
|
||
? widest_unsigned_literal_type_node
|
||
: widest_integer_literal_type_node);
|
||
else
|
||
type = integer_types[itk];
|
||
|
||
if (itk > itk_unsigned_long
|
||
&& (flags & CPP_N_WIDTH) != CPP_N_LARGE
|
||
&& ! in_system_header && ! flag_isoc99)
|
||
pedwarn ("integer constant is too large for \"%s\" type",
|
||
(flags & CPP_N_UNSIGNED) ? "unsigned long" : "long");
|
||
|
||
TREE_TYPE (value) = type;
|
||
|
||
/* Convert imaginary to a complex type. */
|
||
if (flags & CPP_N_IMAGINARY)
|
||
value = build_complex (NULL_TREE, convert (type, integer_zero_node), value);
|
||
|
||
return value;
|
||
}
|
||
|
||
/* Interpret TOKEN, a floating point number with FLAGS as classified
|
||
by cpplib. */
|
||
static tree
|
||
interpret_float (token, flags)
|
||
const cpp_token *token;
|
||
unsigned int flags;
|
||
{
|
||
tree type;
|
||
tree value;
|
||
REAL_VALUE_TYPE real;
|
||
char *copy;
|
||
size_t copylen;
|
||
const char *typename;
|
||
|
||
/* FIXME: make %T work in error/warning, then we don't need typename. */
|
||
if ((flags & CPP_N_WIDTH) == CPP_N_LARGE)
|
||
{
|
||
type = long_double_type_node;
|
||
typename = "long double";
|
||
}
|
||
else if ((flags & CPP_N_WIDTH) == CPP_N_SMALL
|
||
|| flag_single_precision_constant)
|
||
{
|
||
type = float_type_node;
|
||
typename = "float";
|
||
}
|
||
else
|
||
{
|
||
type = double_type_node;
|
||
typename = "double";
|
||
}
|
||
|
||
/* Copy the constant to a nul-terminated buffer. If the constant
|
||
has any suffixes, cut them off; REAL_VALUE_ATOF/ REAL_VALUE_HTOF
|
||
can't handle them. */
|
||
copylen = token->val.str.len;
|
||
if ((flags & CPP_N_WIDTH) != CPP_N_MEDIUM)
|
||
/* Must be an F or L suffix. */
|
||
copylen--;
|
||
if (flags & CPP_N_IMAGINARY)
|
||
/* I or J suffix. */
|
||
copylen--;
|
||
|
||
copy = alloca (copylen + 1);
|
||
memcpy (copy, token->val.str.text, copylen);
|
||
copy[copylen] = '\0';
|
||
|
||
real_from_string (&real, copy);
|
||
real_convert (&real, TYPE_MODE (type), &real);
|
||
|
||
/* A diagnostic is required for "soft" overflow by some ISO C
|
||
testsuites. This is not pedwarn, because some people don't want
|
||
an error for this.
|
||
??? That's a dubious reason... is this a mandatory diagnostic or
|
||
isn't it? -- zw, 2001-08-21. */
|
||
if (REAL_VALUE_ISINF (real) && pedantic)
|
||
warning ("floating constant exceeds range of \"%s\"", typename);
|
||
|
||
/* Create a node with determined type and value. */
|
||
value = build_real (type, real);
|
||
if (flags & CPP_N_IMAGINARY)
|
||
value = build_complex (NULL_TREE, convert (type, integer_zero_node), value);
|
||
|
||
return value;
|
||
}
|
||
|
||
static tree
|
||
lex_string (str, len, wide)
|
||
const unsigned char *str;
|
||
unsigned int len;
|
||
int wide;
|
||
{
|
||
tree value;
|
||
char *buf = alloca ((len + 1) * (wide ? WCHAR_BYTES : 1));
|
||
char *q = buf;
|
||
const unsigned char *p = str, *limit = str + len;
|
||
cppchar_t c;
|
||
|
||
#ifdef MULTIBYTE_CHARS
|
||
/* Reset multibyte conversion state. */
|
||
(void) local_mbtowc (NULL, NULL, 0);
|
||
#endif
|
||
|
||
while (p < limit)
|
||
{
|
||
#ifdef MULTIBYTE_CHARS
|
||
wchar_t wc;
|
||
int char_len;
|
||
|
||
char_len = local_mbtowc (&wc, (const char *) p, limit - p);
|
||
if (char_len == -1)
|
||
{
|
||
warning ("ignoring invalid multibyte character");
|
||
char_len = 1;
|
||
c = *p++;
|
||
}
|
||
else
|
||
{
|
||
p += char_len;
|
||
c = wc;
|
||
}
|
||
#else
|
||
c = *p++;
|
||
#endif
|
||
|
||
if (c == '\\' && !ignore_escape_flag)
|
||
c = cpp_parse_escape (parse_in, &p, limit, wide);
|
||
|
||
/* Add this single character into the buffer either as a wchar_t,
|
||
a multibyte sequence, or as a single byte. */
|
||
if (wide)
|
||
{
|
||
unsigned charwidth = TYPE_PRECISION (char_type_node);
|
||
unsigned bytemask = (1 << charwidth) - 1;
|
||
int byte;
|
||
|
||
for (byte = 0; byte < WCHAR_BYTES; ++byte)
|
||
{
|
||
int n;
|
||
if (byte >= (int) sizeof (c))
|
||
n = 0;
|
||
else
|
||
n = (c >> (byte * charwidth)) & bytemask;
|
||
if (BYTES_BIG_ENDIAN)
|
||
q[WCHAR_BYTES - byte - 1] = n;
|
||
else
|
||
q[byte] = n;
|
||
}
|
||
q += WCHAR_BYTES;
|
||
}
|
||
#ifdef MULTIBYTE_CHARS
|
||
else if (char_len > 1)
|
||
{
|
||
/* We're dealing with a multibyte character. */
|
||
for ( ; char_len >0; --char_len)
|
||
{
|
||
*q++ = *(p - char_len);
|
||
}
|
||
}
|
||
#endif
|
||
else
|
||
{
|
||
*q++ = c;
|
||
}
|
||
}
|
||
|
||
/* Terminate the string value, either with a single byte zero
|
||
or with a wide zero. */
|
||
|
||
if (wide)
|
||
{
|
||
memset (q, 0, WCHAR_BYTES);
|
||
q += WCHAR_BYTES;
|
||
}
|
||
else
|
||
{
|
||
*q++ = '\0';
|
||
}
|
||
|
||
value = build_string (q - buf, buf);
|
||
|
||
if (wide)
|
||
TREE_TYPE (value) = wchar_array_type_node;
|
||
else
|
||
TREE_TYPE (value) = char_array_type_node;
|
||
return value;
|
||
}
|
||
|
||
/* Converts a (possibly wide) character constant token into a tree. */
|
||
static tree
|
||
lex_charconst (token)
|
||
const cpp_token *token;
|
||
{
|
||
cppchar_t result;
|
||
tree type, value;
|
||
unsigned int chars_seen;
|
||
int unsignedp;
|
||
|
||
result = cpp_interpret_charconst (parse_in, token,
|
||
&chars_seen, &unsignedp);
|
||
|
||
/* Cast to cppchar_signed_t to get correct sign-extension of RESULT
|
||
before possibly widening to HOST_WIDE_INT for build_int_2. */
|
||
if (unsignedp || (cppchar_signed_t) result >= 0)
|
||
value = build_int_2 (result, 0);
|
||
else
|
||
value = build_int_2 ((cppchar_signed_t) result, -1);
|
||
|
||
if (token->type == CPP_WCHAR)
|
||
type = wchar_type_node;
|
||
/* In C, a character constant has type 'int'.
|
||
In C++ 'char', but multi-char charconsts have type 'int'. */
|
||
else if ((c_language == clk_c) || chars_seen > 1)
|
||
type = integer_type_node;
|
||
else
|
||
type = char_type_node;
|
||
|
||
TREE_TYPE (value) = type;
|
||
return value;
|
||
}
|