c-parse.c

gcc库的原代码,对编程有很大帮助.

/*  A Bison parser, made from c-parse.y with Bison version GNU Bison version 1.22
  */

#define YYBISON 1  /* Identify Bison output.  */

#define	IDENTIFIER	258
#define	TYPENAME	259
#define	SCSPEC	260
#define	TYPESPEC	261
#define	TYPE_QUAL	262
#define	CONSTANT	263
#define	STRING	264
#define	ELLIPSIS	265
#define	SIZEOF	266
#define	ENUM	267
#define	STRUCT	268
#define	UNION	269
#define	IF	270
#define	ELSE	271
#define	WHILE	272
#define	DO	273
#define	FOR	274
#define	SWITCH	275
#define	CASE	276
#define	DEFAULT	277
#define	BREAK	278
#define	CONTINUE	279
#define	RETURN	280
#define	GOTO	281
#define	ASM_KEYWORD	282
#define	TYPEOF	283
#define	ALIGNOF	284
#define	ATTRIBUTE	285
#define	EXTENSION	286
#define	LABEL	287
#define	REALPART	288
#define	IMAGPART	289
#define	ASSIGN	290
#define	OROR	291
#define	ANDAND	292
#define	EQCOMPARE	293
#define	ARITHCOMPARE	294
#define	LSHIFT	295
#define	RSHIFT	296
#define	UNARY	297
#define	PLUSPLUS	298
#define	MINUSMINUS	299
#define	HYPERUNARY	300
#define	POINTSAT	301
#define	INTERFACE	302
#define	IMPLEMENTATION	303
#define	END	304
#define	SELECTOR	305
#define	DEFS	306
#define	ENCODE	307
#define	CLASSNAME	308
#define	PUBLIC	309
#define	PRIVATE	310
#define	PROTECTED	311
#define	PROTOCOL	312
#define	OBJECTNAME	313
#define	CLASS	314
#define	ALIAS	315
#define	OBJC_STRING	316

#line 55 "c-parse.y"

#include <stdio.h>
#include <errno.h>
#include <setjmp.h>

#include "config.h"
#include "tree.h"
#include "input.h"
#include "c-lex.h"
#include "c-tree.h"
#include "flags.h"

#ifdef MULTIBYTE_CHARS
#include <stdlib.h>
#include <locale.h>
#endif


/* Since parsers are distinct for each language, put the language string
   definition here.  */
char *language_string = "GNU C";

#ifndef errno
extern int errno;
#endif

void yyerror ();

/* Like YYERROR but do call yyerror.  */
#define YYERROR1 { yyerror ("syntax error"); YYERROR; }

/* Cause the `yydebug' variable to be defined.  */
#define YYDEBUG 1

#line 92 "c-parse.y"
typedef union {long itype; tree ttype; enum tree_code code;
	char *filename; int lineno; int ends_in_label; } YYSTYPE;
#line 206 "c-parse.y"

/* Number of statements (loosely speaking) seen so far.  */
static int stmt_count;

/* Input file and line number of the end of the body of last simple_if;
   used by the stmt-rule immediately after simple_if returns.  */
static char *if_stmt_file;
static int if_stmt_line;

/* List of types and structure classes of the current declaration.  */
static tree current_declspecs;
static tree prefix_attributes = NULL_TREE;

/* Stack of saved values of current_declspecs and prefix_attributes.  */
static tree declspec_stack;

/* 1 if we explained undeclared var errors.  */
static int undeclared_variable_notice;


/* Tell yyparse how to print a token's value, if yydebug is set.  */

#define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL)
extern void yyprint ();

#ifndef YYLTYPE
typedef
  struct yyltype
    {
      int timestamp;
      int first_line;
      int first_column;
      int last_line;
      int last_column;
      char *text;
   }
  yyltype;

#define YYLTYPE yyltype
#endif

#include <stdio.h>

#ifndef __cplusplus
#ifndef __STDC__
#define const
#endif
#endif



#define	YYFINAL		658
#define	YYFLAG		-32768
#define	YYNTBASE	84

#define YYTRANSLATE(x) ((unsigned)(x) <= 316 ? yytranslate[x] : 228)

static const char yytranslate[] = {     0,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,    80,     2,     2,     2,    52,    43,     2,    59,
    76,    50,    48,    81,    49,    58,    51,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,    38,    77,     2,
    36,     2,    37,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
    60,     2,    83,    42,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,    82,    41,    78,    79,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     1,     2,     3,     4,     5,
     6,     7,     8,     9,    10,    11,    12,    13,    14,    15,
    16,    17,    18,    19,    20,    21,    22,    23,    24,    25,
    26,    27,    28,    29,    30,    31,    32,    33,    34,    35,
    39,    40,    44,    45,    46,    47,    53,    54,    55,    56,
    57,    61,    62,    63,    64,    65,    66,    67,    68,    69,
    70,    71,    72,    73,    74,    75
};

#if YYDEBUG != 0
static const short yyprhs[] = {     0,
     0,     1,     3,     4,     7,     8,    12,    14,    16,    22,
    26,    31,    36,    39,    42,    45,    48,    50,    51,    52,
    60,    65,    66,    67,    75,    80,    81,    82,    89,    93,
    95,    97,    99,   101,   103,   105,   107,   109,   111,   113,
   114,   116,   118,   122,   124,   127,   128,   132,   135,   138,
   141,   146,   149,   154,   157,   160,   162,   167,   168,   176,
   178,   182,   186,   190,   194,   198,   202,   206,   210,   214,
   218,   222,   226,   230,   234,   240,   244,   248,   250,   252,
   254,   258,   262,   263,   268,   273,   278,   282,   286,   289,
   292,   294,   297,   298,   300,   303,   307,   309,   311,   314,
   317,   322,   327,   330,   333,   337,   339,   341,   344,   347,
   348,   349,   354,   359,   363,   367,   370,   373,   376,   380,
   381,   384,   387,   389,   391,   394,   397,   400,   404,   405,
   408,   410,   412,   414,   419,   424,   426,   428,   430,   432,
   436,   438,   442,   443,   448,   449,   456,   460,   461,   468,
   472,   473,   475,   477,   480,   487,   489,   493,   494,   496,
   501,   508,   513,   515,   517,   519,   521,   523,   524,   529,