9f36c7f497
In case you're wondering, the gcc-2.7.2.1 import uses this to generate code. The size of the generated code is bigger than the entire bison release, making this a saving. The bison doc is pretty good apparently.
693 lines
17 KiB
C
693 lines
17 KiB
C
/* -*-C-*- Note some compilers choke on comments on `#line' lines. */
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#line 3 "bison.simple"
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/* Skeleton output parser for bison,
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Copyright (C) 1984, 1989, 1990 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* As a special exception, when this file is copied by Bison into a
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Bison output file, you may use that output file without restriction.
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This special exception was added by the Free Software Foundation
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in version 1.24 of Bison. */
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#ifndef alloca
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#ifdef __GNUC__
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#define alloca __builtin_alloca
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#else /* not GNU C. */
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#if (!defined (__STDC__) && defined (sparc)) || defined (__sparc__) || defined (__sparc) || defined (__sgi)
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#include <alloca.h>
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#else /* not sparc */
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#if defined (MSDOS) && !defined (__TURBOC__)
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#include <malloc.h>
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#else /* not MSDOS, or __TURBOC__ */
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#if defined(_AIX)
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#include <malloc.h>
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#pragma alloca
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#else /* not MSDOS, __TURBOC__, or _AIX */
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#ifdef __hpux
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#ifdef __cplusplus
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extern "C" {
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void *alloca (unsigned int);
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};
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#else /* not __cplusplus */
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void *alloca ();
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#endif /* not __cplusplus */
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#endif /* __hpux */
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#endif /* not _AIX */
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#endif /* not MSDOS, or __TURBOC__ */
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#endif /* not sparc. */
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#endif /* not GNU C. */
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#endif /* alloca not defined. */
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/* This is the parser code that is written into each bison parser
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when the %semantic_parser declaration is not specified in the grammar.
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It was written by Richard Stallman by simplifying the hairy parser
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used when %semantic_parser is specified. */
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/* Note: there must be only one dollar sign in this file.
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It is replaced by the list of actions, each action
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as one case of the switch. */
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#define yyerrok (yyerrstatus = 0)
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#define yyclearin (yychar = YYEMPTY)
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#define YYEMPTY -2
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#define YYEOF 0
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#define YYACCEPT return(0)
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#define YYABORT return(1)
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#define YYERROR goto yyerrlab1
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/* Like YYERROR except do call yyerror.
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This remains here temporarily to ease the
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transition to the new meaning of YYERROR, for GCC.
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Once GCC version 2 has supplanted version 1, this can go. */
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#define YYFAIL goto yyerrlab
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#define YYRECOVERING() (!!yyerrstatus)
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#define YYBACKUP(token, value) \
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do \
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if (yychar == YYEMPTY && yylen == 1) \
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{ yychar = (token), yylval = (value); \
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yychar1 = YYTRANSLATE (yychar); \
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YYPOPSTACK; \
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goto yybackup; \
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} \
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else \
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{ yyerror ("syntax error: cannot back up"); YYERROR; } \
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while (0)
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#define YYTERROR 1
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#define YYERRCODE 256
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#ifndef YYPURE
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#define YYLEX yylex()
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#endif
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#ifdef YYPURE
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#ifdef YYLSP_NEEDED
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#ifdef YYLEX_PARAM
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#define YYLEX yylex(&yylval, &yylloc, YYLEX_PARAM)
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#else
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#define YYLEX yylex(&yylval, &yylloc)
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#endif
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#else /* not YYLSP_NEEDED */
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#ifdef YYLEX_PARAM
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#define YYLEX yylex(&yylval, YYLEX_PARAM)
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#else
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#define YYLEX yylex(&yylval)
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#endif
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#endif /* not YYLSP_NEEDED */
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#endif
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/* If nonreentrant, generate the variables here */
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#ifndef YYPURE
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int yychar; /* the lookahead symbol */
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YYSTYPE yylval; /* the semantic value of the */
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/* lookahead symbol */
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#ifdef YYLSP_NEEDED
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YYLTYPE yylloc; /* location data for the lookahead */
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/* symbol */
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#endif
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int yynerrs; /* number of parse errors so far */
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#endif /* not YYPURE */
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#if YYDEBUG != 0
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int yydebug; /* nonzero means print parse trace */
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/* Since this is uninitialized, it does not stop multiple parsers
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from coexisting. */
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#endif
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/* YYINITDEPTH indicates the initial size of the parser's stacks */
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#ifndef YYINITDEPTH
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#define YYINITDEPTH 200
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#endif
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/* YYMAXDEPTH is the maximum size the stacks can grow to
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(effective only if the built-in stack extension method is used). */
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#if YYMAXDEPTH == 0
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#undef YYMAXDEPTH
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#endif
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#ifndef YYMAXDEPTH
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#define YYMAXDEPTH 10000
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#endif
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/* Prevent warning if -Wstrict-prototypes. */
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#ifdef __GNUC__
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int yyparse (void);
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#endif
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#if __GNUC__ > 1 /* GNU C and GNU C++ define this. */
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#define __yy_memcpy(TO,FROM,COUNT) __builtin_memcpy(TO,FROM,COUNT)
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#else /* not GNU C or C++ */
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#ifndef __cplusplus
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/* This is the most reliable way to avoid incompatibilities
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in available built-in functions on various systems. */
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static void
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__yy_memcpy (to, from, count)
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char *to;
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char *from;
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int count;
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{
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register char *f = from;
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register char *t = to;
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register int i = count;
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while (i-- > 0)
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*t++ = *f++;
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}
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#else /* __cplusplus */
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/* This is the most reliable way to avoid incompatibilities
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in available built-in functions on various systems. */
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static void
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__yy_memcpy (char *to, char *from, int count)
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{
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register char *f = from;
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register char *t = to;
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register int i = count;
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while (i-- > 0)
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*t++ = *f++;
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}
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#endif
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#endif
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#line 196 "bison.simple"
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/* The user can define YYPARSE_PARAM as the name of an argument to be passed
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into yyparse. The argument should have type void *.
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It should actually point to an object.
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Grammar actions can access the variable by casting it
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to the proper pointer type. */
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#ifdef YYPARSE_PARAM
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#ifdef __cplusplus
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#define YYPARSE_PARAM_ARG void *YYPARSE_PARAM
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#define YYPARSE_PARAM_DECL
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#else /* not __cplusplus */
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#define YYPARSE_PARAM_ARG YYPARSE_PARAM
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#define YYPARSE_PARAM_DECL void *YYPARSE_PARAM;
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#endif /* not __cplusplus */
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#else /* not YYPARSE_PARAM */
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#define YYPARSE_PARAM_ARG
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#define YYPARSE_PARAM_DECL
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#endif /* not YYPARSE_PARAM */
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int
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yyparse(YYPARSE_PARAM_ARG)
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YYPARSE_PARAM_DECL
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{
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register int yystate;
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register int yyn;
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register short *yyssp;
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register YYSTYPE *yyvsp;
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int yyerrstatus; /* number of tokens to shift before error messages enabled */
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int yychar1 = 0; /* lookahead token as an internal (translated) token number */
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short yyssa[YYINITDEPTH]; /* the state stack */
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YYSTYPE yyvsa[YYINITDEPTH]; /* the semantic value stack */
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short *yyss = yyssa; /* refer to the stacks thru separate pointers */
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YYSTYPE *yyvs = yyvsa; /* to allow yyoverflow to reallocate them elsewhere */
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#ifdef YYLSP_NEEDED
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YYLTYPE yylsa[YYINITDEPTH]; /* the location stack */
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YYLTYPE *yyls = yylsa;
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YYLTYPE *yylsp;
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#define YYPOPSTACK (yyvsp--, yyssp--, yylsp--)
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#else
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#define YYPOPSTACK (yyvsp--, yyssp--)
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#endif
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int yystacksize = YYINITDEPTH;
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#ifdef YYPURE
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int yychar;
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YYSTYPE yylval;
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int yynerrs;
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#ifdef YYLSP_NEEDED
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YYLTYPE yylloc;
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#endif
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#endif
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YYSTYPE yyval; /* the variable used to return */
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/* semantic values from the action */
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/* routines */
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int yylen;
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#if YYDEBUG != 0
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if (yydebug)
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fprintf(stderr, "Starting parse\n");
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#endif
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yystate = 0;
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yyerrstatus = 0;
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yynerrs = 0;
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yychar = YYEMPTY; /* Cause a token to be read. */
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/* Initialize stack pointers.
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Waste one element of value and location stack
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so that they stay on the same level as the state stack.
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The wasted elements are never initialized. */
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yyssp = yyss - 1;
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yyvsp = yyvs;
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#ifdef YYLSP_NEEDED
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yylsp = yyls;
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#endif
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/* Push a new state, which is found in yystate . */
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/* In all cases, when you get here, the value and location stacks
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have just been pushed. so pushing a state here evens the stacks. */
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yynewstate:
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*++yyssp = yystate;
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if (yyssp >= yyss + yystacksize - 1)
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{
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/* Give user a chance to reallocate the stack */
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/* Use copies of these so that the &'s don't force the real ones into memory. */
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YYSTYPE *yyvs1 = yyvs;
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short *yyss1 = yyss;
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#ifdef YYLSP_NEEDED
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YYLTYPE *yyls1 = yyls;
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#endif
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/* Get the current used size of the three stacks, in elements. */
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int size = yyssp - yyss + 1;
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#ifdef yyoverflow
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/* Each stack pointer address is followed by the size of
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the data in use in that stack, in bytes. */
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#ifdef YYLSP_NEEDED
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/* This used to be a conditional around just the two extra args,
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but that might be undefined if yyoverflow is a macro. */
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yyoverflow("parser stack overflow",
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&yyss1, size * sizeof (*yyssp),
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&yyvs1, size * sizeof (*yyvsp),
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&yyls1, size * sizeof (*yylsp),
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&yystacksize);
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#else
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yyoverflow("parser stack overflow",
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&yyss1, size * sizeof (*yyssp),
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&yyvs1, size * sizeof (*yyvsp),
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&yystacksize);
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#endif
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yyss = yyss1; yyvs = yyvs1;
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#ifdef YYLSP_NEEDED
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yyls = yyls1;
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#endif
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#else /* no yyoverflow */
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/* Extend the stack our own way. */
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if (yystacksize >= YYMAXDEPTH)
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{
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yyerror("parser stack overflow");
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return 2;
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}
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yystacksize *= 2;
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if (yystacksize > YYMAXDEPTH)
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yystacksize = YYMAXDEPTH;
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yyss = (short *) alloca (yystacksize * sizeof (*yyssp));
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__yy_memcpy ((char *)yyss, (char *)yyss1, size * sizeof (*yyssp));
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yyvs = (YYSTYPE *) alloca (yystacksize * sizeof (*yyvsp));
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__yy_memcpy ((char *)yyvs, (char *)yyvs1, size * sizeof (*yyvsp));
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#ifdef YYLSP_NEEDED
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yyls = (YYLTYPE *) alloca (yystacksize * sizeof (*yylsp));
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__yy_memcpy ((char *)yyls, (char *)yyls1, size * sizeof (*yylsp));
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#endif
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#endif /* no yyoverflow */
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yyssp = yyss + size - 1;
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yyvsp = yyvs + size - 1;
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#ifdef YYLSP_NEEDED
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yylsp = yyls + size - 1;
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#endif
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#if YYDEBUG != 0
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if (yydebug)
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fprintf(stderr, "Stack size increased to %d\n", yystacksize);
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#endif
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if (yyssp >= yyss + yystacksize - 1)
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YYABORT;
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}
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#if YYDEBUG != 0
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if (yydebug)
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fprintf(stderr, "Entering state %d\n", yystate);
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#endif
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goto yybackup;
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yybackup:
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/* Do appropriate processing given the current state. */
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/* Read a lookahead token if we need one and don't already have one. */
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/* yyresume: */
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/* First try to decide what to do without reference to lookahead token. */
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yyn = yypact[yystate];
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if (yyn == YYFLAG)
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goto yydefault;
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/* Not known => get a lookahead token if don't already have one. */
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/* yychar is either YYEMPTY or YYEOF
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or a valid token in external form. */
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if (yychar == YYEMPTY)
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{
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#if YYDEBUG != 0
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if (yydebug)
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fprintf(stderr, "Reading a token: ");
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#endif
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yychar = YYLEX;
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}
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/* Convert token to internal form (in yychar1) for indexing tables with */
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if (yychar <= 0) /* This means end of input. */
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{
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yychar1 = 0;
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yychar = YYEOF; /* Don't call YYLEX any more */
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#if YYDEBUG != 0
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if (yydebug)
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fprintf(stderr, "Now at end of input.\n");
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#endif
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}
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else
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{
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yychar1 = YYTRANSLATE(yychar);
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#if YYDEBUG != 0
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if (yydebug)
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{
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fprintf (stderr, "Next token is %d (%s", yychar, yytname[yychar1]);
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/* Give the individual parser a way to print the precise meaning
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of a token, for further debugging info. */
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#ifdef YYPRINT
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YYPRINT (stderr, yychar, yylval);
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#endif
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fprintf (stderr, ")\n");
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}
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#endif
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}
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yyn += yychar1;
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if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != yychar1)
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goto yydefault;
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yyn = yytable[yyn];
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/* yyn is what to do for this token type in this state.
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Negative => reduce, -yyn is rule number.
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Positive => shift, yyn is new state.
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New state is final state => don't bother to shift,
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just return success.
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0, or most negative number => error. */
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if (yyn < 0)
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{
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if (yyn == YYFLAG)
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goto yyerrlab;
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yyn = -yyn;
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goto yyreduce;
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}
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else if (yyn == 0)
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goto yyerrlab;
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if (yyn == YYFINAL)
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YYACCEPT;
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/* Shift the lookahead token. */
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#if YYDEBUG != 0
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if (yydebug)
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fprintf(stderr, "Shifting token %d (%s), ", yychar, yytname[yychar1]);
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#endif
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/* Discard the token being shifted unless it is eof. */
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if (yychar != YYEOF)
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yychar = YYEMPTY;
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*++yyvsp = yylval;
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#ifdef YYLSP_NEEDED
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*++yylsp = yylloc;
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#endif
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/* count tokens shifted since error; after three, turn off error status. */
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if (yyerrstatus) yyerrstatus--;
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yystate = yyn;
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goto yynewstate;
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/* Do the default action for the current state. */
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yydefault:
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yyn = yydefact[yystate];
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if (yyn == 0)
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goto yyerrlab;
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/* Do a reduction. yyn is the number of a rule to reduce with. */
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yyreduce:
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yylen = yyr2[yyn];
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if (yylen > 0)
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yyval = yyvsp[1-yylen]; /* implement default value of the action */
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||
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#if YYDEBUG != 0
|
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if (yydebug)
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{
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int i;
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fprintf (stderr, "Reducing via rule %d (line %d), ",
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yyn, yyrline[yyn]);
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/* Print the symbols being reduced, and their result. */
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||
for (i = yyprhs[yyn]; yyrhs[i] > 0; i++)
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fprintf (stderr, "%s ", yytname[yyrhs[i]]);
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fprintf (stderr, " -> %s\n", yytname[yyr1[yyn]]);
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}
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#endif
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$ /* the action file gets copied in in place of this dollarsign */
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#line 498 "bison.simple"
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yyvsp -= yylen;
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yyssp -= yylen;
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#ifdef YYLSP_NEEDED
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yylsp -= yylen;
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#endif
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|
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#if YYDEBUG != 0
|
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if (yydebug)
|
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{
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short *ssp1 = yyss - 1;
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fprintf (stderr, "state stack now");
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while (ssp1 != yyssp)
|
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fprintf (stderr, " %d", *++ssp1);
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fprintf (stderr, "\n");
|
||
}
|
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#endif
|
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|
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*++yyvsp = yyval;
|
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|
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#ifdef YYLSP_NEEDED
|
||
yylsp++;
|
||
if (yylen == 0)
|
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{
|
||
yylsp->first_line = yylloc.first_line;
|
||
yylsp->first_column = yylloc.first_column;
|
||
yylsp->last_line = (yylsp-1)->last_line;
|
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yylsp->last_column = (yylsp-1)->last_column;
|
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yylsp->text = 0;
|
||
}
|
||
else
|
||
{
|
||
yylsp->last_line = (yylsp+yylen-1)->last_line;
|
||
yylsp->last_column = (yylsp+yylen-1)->last_column;
|
||
}
|
||
#endif
|
||
|
||
/* Now "shift" the result of the reduction.
|
||
Determine what state that goes to,
|
||
based on the state we popped back to
|
||
and the rule number reduced by. */
|
||
|
||
yyn = yyr1[yyn];
|
||
|
||
yystate = yypgoto[yyn - YYNTBASE] + *yyssp;
|
||
if (yystate >= 0 && yystate <= YYLAST && yycheck[yystate] == *yyssp)
|
||
yystate = yytable[yystate];
|
||
else
|
||
yystate = yydefgoto[yyn - YYNTBASE];
|
||
|
||
goto yynewstate;
|
||
|
||
yyerrlab: /* here on detecting error */
|
||
|
||
if (! yyerrstatus)
|
||
/* If not already recovering from an error, report this error. */
|
||
{
|
||
++yynerrs;
|
||
|
||
#ifdef YYERROR_VERBOSE
|
||
yyn = yypact[yystate];
|
||
|
||
if (yyn > YYFLAG && yyn < YYLAST)
|
||
{
|
||
int size = 0;
|
||
char *msg;
|
||
int x, count;
|
||
|
||
count = 0;
|
||
/* Start X at -yyn if nec to avoid negative indexes in yycheck. */
|
||
for (x = (yyn < 0 ? -yyn : 0);
|
||
x < (sizeof(yytname) / sizeof(char *)); x++)
|
||
if (yycheck[x + yyn] == x)
|
||
size += strlen(yytname[x]) + 15, count++;
|
||
msg = (char *) malloc(size + 15);
|
||
if (msg != 0)
|
||
{
|
||
strcpy(msg, "parse error");
|
||
|
||
if (count < 5)
|
||
{
|
||
count = 0;
|
||
for (x = (yyn < 0 ? -yyn : 0);
|
||
x < (sizeof(yytname) / sizeof(char *)); x++)
|
||
if (yycheck[x + yyn] == x)
|
||
{
|
||
strcat(msg, count == 0 ? ", expecting `" : " or `");
|
||
strcat(msg, yytname[x]);
|
||
strcat(msg, "'");
|
||
count++;
|
||
}
|
||
}
|
||
yyerror(msg);
|
||
free(msg);
|
||
}
|
||
else
|
||
yyerror ("parse error; also virtual memory exceeded");
|
||
}
|
||
else
|
||
#endif /* YYERROR_VERBOSE */
|
||
yyerror("parse error");
|
||
}
|
||
|
||
goto yyerrlab1;
|
||
yyerrlab1: /* here on error raised explicitly by an action */
|
||
|
||
if (yyerrstatus == 3)
|
||
{
|
||
/* if just tried and failed to reuse lookahead token after an error, discard it. */
|
||
|
||
/* return failure if at end of input */
|
||
if (yychar == YYEOF)
|
||
YYABORT;
|
||
|
||
#if YYDEBUG != 0
|
||
if (yydebug)
|
||
fprintf(stderr, "Discarding token %d (%s).\n", yychar, yytname[yychar1]);
|
||
#endif
|
||
|
||
yychar = YYEMPTY;
|
||
}
|
||
|
||
/* Else will try to reuse lookahead token
|
||
after shifting the error token. */
|
||
|
||
yyerrstatus = 3; /* Each real token shifted decrements this */
|
||
|
||
goto yyerrhandle;
|
||
|
||
yyerrdefault: /* current state does not do anything special for the error token. */
|
||
|
||
#if 0
|
||
/* This is wrong; only states that explicitly want error tokens
|
||
should shift them. */
|
||
yyn = yydefact[yystate]; /* If its default is to accept any token, ok. Otherwise pop it.*/
|
||
if (yyn) goto yydefault;
|
||
#endif
|
||
|
||
yyerrpop: /* pop the current state because it cannot handle the error token */
|
||
|
||
if (yyssp == yyss) YYABORT;
|
||
yyvsp--;
|
||
yystate = *--yyssp;
|
||
#ifdef YYLSP_NEEDED
|
||
yylsp--;
|
||
#endif
|
||
|
||
#if YYDEBUG != 0
|
||
if (yydebug)
|
||
{
|
||
short *ssp1 = yyss - 1;
|
||
fprintf (stderr, "Error: state stack now");
|
||
while (ssp1 != yyssp)
|
||
fprintf (stderr, " %d", *++ssp1);
|
||
fprintf (stderr, "\n");
|
||
}
|
||
#endif
|
||
|
||
yyerrhandle:
|
||
|
||
yyn = yypact[yystate];
|
||
if (yyn == YYFLAG)
|
||
goto yyerrdefault;
|
||
|
||
yyn += YYTERROR;
|
||
if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != YYTERROR)
|
||
goto yyerrdefault;
|
||
|
||
yyn = yytable[yyn];
|
||
if (yyn < 0)
|
||
{
|
||
if (yyn == YYFLAG)
|
||
goto yyerrpop;
|
||
yyn = -yyn;
|
||
goto yyreduce;
|
||
}
|
||
else if (yyn == 0)
|
||
goto yyerrpop;
|
||
|
||
if (yyn == YYFINAL)
|
||
YYACCEPT;
|
||
|
||
#if YYDEBUG != 0
|
||
if (yydebug)
|
||
fprintf(stderr, "Shifting error token, ");
|
||
#endif
|
||
|
||
*++yyvsp = yylval;
|
||
#ifdef YYLSP_NEEDED
|
||
*++yylsp = yylloc;
|
||
#endif
|
||
|
||
yystate = yyn;
|
||
goto yynewstate;
|
||
}
|