X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/be4bf8770affc36c708b0cd22d6cda19aac23731..7d369561ebc86daf1c44f6bff6d8abce6b6f1f81:/bison.simple?ds=sidebyside diff --git a/bison.simple b/bison.simple index d8b16340..529fa777 100644 --- a/bison.simple +++ b/bison.simple @@ -1,12 +1,13 @@ /* -*-C-*- Note some compilers choke on comments on `#line' lines. */ #line 3 "bison.simple" +/* This file comes from bison-@bison_version@. */ /* Skeleton output parser for bison, - Copyright (C) 1984, 1989, 1990 Bob Corbett and Richard Stallman + Copyright (C) 1984, 1989, 1990 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 1, or (at your option) + the Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, @@ -18,40 +19,63 @@ along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ +/* As a special exception, when this file is copied by Bison into a + Bison output file, you may use that output file without restriction. + This special exception was added by the Free Software Foundation + in version 1.24 of Bison. */ -#ifndef alloca +/* This is the parser code that is written into each bison parser + when the %semantic_parser declaration is not specified in the grammar. + It was written by Richard Stallman by simplifying the hairy parser + used when %semantic_parser is specified. */ + +#ifndef YYSTACK_USE_ALLOCA +#ifdef alloca +#define YYSTACK_USE_ALLOCA +#else /* alloca not defined */ #ifdef __GNUC__ +#define YYSTACK_USE_ALLOCA #define alloca __builtin_alloca #else /* not GNU C. */ -#if (!defined (__STDC__) && defined (sparc)) || defined (__sparc__) || defined (__sparc) || defined (__sgi) +#if (!defined (__STDC__) && defined (sparc)) || defined (__sparc__) || defined (__sparc) || defined (__sgi) || (defined (__sun) && defined (__i386)) +#define YYSTACK_USE_ALLOCA #include #else /* not sparc */ -#if defined (MSDOS) && !defined (__TURBOC__) +/* We think this test detects Watcom and Microsoft C. */ +/* This used to test MSDOS, but that is a bad idea + since that symbol is in the user namespace. */ +#if (defined (_MSDOS) || defined (_MSDOS_)) && !defined (__TURBOC__) +#if 0 /* No need for malloc.h, which pollutes the namespace; + instead, just don't use alloca. */ #include +#endif #else /* not MSDOS, or __TURBOC__ */ #if defined(_AIX) -#include +/* I don't know what this was needed for, but it pollutes the namespace. + So I turned it off. rms, 2 May 1997. */ +/* #include */ #pragma alloca -#else /* not MSDOS, __TURBOC__, or _AIX */ -#ifdef __hpux -#ifdef __cplusplus -extern "C" { -void *alloca (unsigned int); -}; -#else /* not __cplusplus */ -void *alloca (); -#endif /* not __cplusplus */ +#define YYSTACK_USE_ALLOCA +#else /* not MSDOS, or __TURBOC__, or _AIX */ +#if 0 +#ifdef __hpux /* haible@ilog.fr says this works for HPUX 9.05 and up, + and on HPUX 10. Eventually we can turn this on. */ +#define YYSTACK_USE_ALLOCA +#define alloca __builtin_alloca #endif /* __hpux */ +#endif #endif /* not _AIX */ #endif /* not MSDOS, or __TURBOC__ */ -#endif /* not sparc. */ -#endif /* not GNU C. */ -#endif /* alloca not defined. */ +#endif /* not sparc */ +#endif /* not GNU C */ +#endif /* alloca not defined */ +#endif /* YYSTACK_USE_ALLOCA not defined */ -/* This is the parser code that is written into each bison parser - when the %semantic_parser declaration is not specified in the grammar. - It was written by Richard Stallman by simplifying the hairy parser - used when %semantic_parser is specified. */ +#ifdef YYSTACK_USE_ALLOCA +#define YYSTACK_ALLOC alloca +#else +#define YYSTACK_ALLOC malloc +#endif /* Note: there must be only one dollar sign in this file. It is replaced by the list of actions, each action @@ -61,8 +85,8 @@ void *alloca (); #define yyclearin (yychar = YYEMPTY) #define YYEMPTY -2 #define YYEOF 0 -#define YYACCEPT return(0) -#define YYABORT return(1) +#define YYACCEPT goto yyacceptlab +#define YYABORT goto yyabortlab #define YYERROR goto yyerrlab1 /* Like YYERROR except do call yyerror. This remains here temporarily to ease the @@ -91,10 +115,18 @@ while (0) #ifdef YYPURE #ifdef YYLSP_NEEDED +#ifdef YYLEX_PARAM +#define YYLEX yylex(&yylval, &yylloc, YYLEX_PARAM) +#else #define YYLEX yylex(&yylval, &yylloc) +#endif +#else /* not YYLSP_NEEDED */ +#ifdef YYLEX_PARAM +#define YYLEX yylex(&yylval, YYLEX_PARAM) #else #define YYLEX yylex(&yylval) #endif +#endif /* not YYLSP_NEEDED */ #endif /* If nonreentrant, generate the variables here */ @@ -135,24 +167,24 @@ int yydebug; /* nonzero means print parse trace */ #ifndef YYMAXDEPTH #define YYMAXDEPTH 10000 #endif - -/* Prevent warning if -Wstrict-prototypes. */ -#ifdef __GNUC__ -int yyparse (void); -#endif +/* Define __yy_memcpy. Note that the size argument + should be passed with type unsigned int, because that is what the non-GCC + definitions require. With GCC, __builtin_memcpy takes an arg + of type size_t, but it can handle unsigned int. */ + #if __GNUC__ > 1 /* GNU C and GNU C++ define this. */ -#define __yy_bcopy(FROM,TO,COUNT) __builtin_memcpy(TO,FROM,COUNT) +#define __yy_memcpy(TO,FROM,COUNT) __builtin_memcpy(TO,FROM,COUNT) #else /* not GNU C or C++ */ #ifndef __cplusplus /* This is the most reliable way to avoid incompatibilities in available built-in functions on various systems. */ static void -__yy_bcopy (from, to, count) - char *from; +__yy_memcpy (to, from, count) char *to; - int count; + char *from; + unsigned int count; { register char *f = from; register char *t = to; @@ -167,10 +199,10 @@ __yy_bcopy (from, to, count) /* This is the most reliable way to avoid incompatibilities in available built-in functions on various systems. */ static void -__yy_bcopy (char *from, char *to, int count) +__yy_memcpy (char *to, char *from, unsigned int count) { - register char *f = from; register char *t = to; + register char *f = from; register int i = count; while (i-- > 0) @@ -180,16 +212,46 @@ __yy_bcopy (char *from, char *to, int count) #endif #endif -#line 184 "bison.simple" +#line 216 "bison.simple" + +/* The user can define YYPARSE_PARAM as the name of an argument to be passed + into yyparse. The argument should have type void *. + It should actually point to an object. + Grammar actions can access the variable by casting it + to the proper pointer type. */ + +#ifdef YYPARSE_PARAM +#ifdef __cplusplus +#define YYPARSE_PARAM_ARG void *YYPARSE_PARAM +#define YYPARSE_PARAM_DECL +#else /* not __cplusplus */ +#define YYPARSE_PARAM_ARG YYPARSE_PARAM +#define YYPARSE_PARAM_DECL void *YYPARSE_PARAM; +#endif /* not __cplusplus */ +#else /* not YYPARSE_PARAM */ +#define YYPARSE_PARAM_ARG +#define YYPARSE_PARAM_DECL +#endif /* not YYPARSE_PARAM */ + +/* Prevent warning if -Wstrict-prototypes. */ +#ifdef __GNUC__ +#ifdef YYPARSE_PARAM +int yyparse (void *); +#else +int yyparse (void); +#endif +#endif + int -yyparse() +yyparse(YYPARSE_PARAM_ARG) + YYPARSE_PARAM_DECL { register int yystate; register int yyn; register short *yyssp; register YYSTYPE *yyvsp; int yyerrstatus; /* number of tokens to shift before error messages enabled */ - int yychar1; /* lookahead token as an internal (translated) token number */ + int yychar1 = 0; /* lookahead token as an internal (translated) token number */ short yyssa[YYINITDEPTH]; /* the state stack */ YYSTYPE yyvsa[YYINITDEPTH]; /* the semantic value stack */ @@ -208,6 +270,7 @@ yyparse() #endif int yystacksize = YYINITDEPTH; + int yyfree_stacks = 0; #ifdef YYPURE int yychar; @@ -292,18 +355,32 @@ yynewstate: if (yystacksize >= YYMAXDEPTH) { yyerror("parser stack overflow"); + if (yyfree_stacks) + { + free (yyss); + free (yyvs); +#ifdef YYLSP_NEEDED + free (yyls); +#endif + } return 2; } yystacksize *= 2; if (yystacksize > YYMAXDEPTH) yystacksize = YYMAXDEPTH; - yyss = (short *) alloca (yystacksize * sizeof (*yyssp)); - __yy_bcopy ((char *)yyss1, (char *)yyss, size * sizeof (*yyssp)); - yyvs = (YYSTYPE *) alloca (yystacksize * sizeof (*yyvsp)); - __yy_bcopy ((char *)yyvs1, (char *)yyvs, size * sizeof (*yyvsp)); +#ifndef YYSTACK_USE_ALLOCA + yyfree_stacks = 1; +#endif + yyss = (short *) YYSTACK_ALLOC (yystacksize * sizeof (*yyssp)); + __yy_memcpy ((char *)yyss, (char *)yyss1, + size * (unsigned int) sizeof (*yyssp)); + yyvs = (YYSTYPE *) YYSTACK_ALLOC (yystacksize * sizeof (*yyvsp)); + __yy_memcpy ((char *)yyvs, (char *)yyvs1, + size * (unsigned int) sizeof (*yyvsp)); #ifdef YYLSP_NEEDED - yyls = (YYLTYPE *) alloca (yystacksize * sizeof (*yylsp)); - __yy_bcopy ((char *)yyls1, (char *)yyls, size * sizeof (*yylsp)); + yyls = (YYLTYPE *) YYSTACK_ALLOC (yystacksize * sizeof (*yylsp)); + __yy_memcpy ((char *)yyls, (char *)yyls1, + size * (unsigned int) sizeof (*yylsp)); #endif #endif /* no yyoverflow */ @@ -442,7 +519,8 @@ yydefault: /* Do a reduction. yyn is the number of a rule to reduce with. */ yyreduce: yylen = yyr2[yyn]; - yyval = yyvsp[1-yylen]; /* implement default value of the action */ + if (yylen > 0) + yyval = yyvsp[1-yylen]; /* implement default value of the action */ #if YYDEBUG != 0 if (yydebug) @@ -460,7 +538,7 @@ yyreduce: #endif $ /* the action file gets copied in in place of this dollarsign */ -#line 464 "bison.simple" +#line 542 "bison.simple" yyvsp -= yylen; yyssp -= yylen; @@ -655,4 +733,28 @@ yyerrhandle: yystate = yyn; goto yynewstate; + + yyacceptlab: + /* YYACCEPT comes here. */ + if (yyfree_stacks) + { + free (yyss); + free (yyvs); +#ifdef YYLSP_NEEDED + free (yyls); +#endif + } + return 0; + + yyabortlab: + /* YYABORT comes here. */ + if (yyfree_stacks) + { + free (yyss); + free (yyvs); +#ifdef YYLSP_NEEDED + free (yyls); +#endif + } + return 1; }