X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/5e02f2ada117cabe902f24ba748578f83edc540f..fdb5fc386307aa48213d22bb734ff211928c4dda:/src/bison.simple diff --git a/src/bison.simple b/src/bison.simple index c25067a7..e2b5d6fb 100644 --- a/src/bison.simple +++ b/src/bison.simple @@ -1,8 +1,7 @@ /* -*-C-*- Note some compilers choke on comments on `#line' lines. */ -#line 3 "bison.simple" - +#line /* Skeleton output parser for bison, - Copyright (C) 1984, 1989, 1990 Free Software Foundation, Inc. + Copyright 1984, 1989, 1990, 2000 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 @@ -16,138 +15,166 @@ You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, 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. */ -/* 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 alloca -#ifdef __GNUC__ -#define alloca __builtin_alloca -#else /* not GNU C. */ -#if (!defined (__STDC__) && defined (sparc)) || defined (__sparc__) || defined (__sparc) || defined (__sgi) || (defined (__sun) && defined (__i386)) -#include -#else /* not sparc */ -/* This used to test MSDOS, but that is a bad idea - since that is in the user namespace. */ -#if (defined (_MSDOS) || defined (_MSDOS_)) && !defined (__TURBOC__) -#include -#else /* not MSDOS, or __TURBOC__ */ -#if defined(_AIX) -#include +/* 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) || (defined (__sun) && defined (__i386)) +# define YYSTACK_USE_ALLOCA +# include +# else /* not sparc */ + /* 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) + /* 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, or __TURBOC__, or _AIX */ -#ifdef __hpux -#ifdef __cplusplus -extern "C" { -void *alloca (unsigned int); -}; -#else /* not __cplusplus */ -void *alloca (); -#endif /* not __cplusplus */ -#endif /* __hpux */ -#endif /* not _AIX */ -#endif /* not MSDOS, or __TURBOC__ */ -#endif /* not sparc. */ -#endif /* not GNU C. */ -#endif /* alloca not defined. */ - -/* Note: there must be only one dollar sign in this file. - It is replaced by the list of actions, each action - as one case of the switch. */ +# define YYSTACK_USE_ALLOCA +# else /* not MSDOS, or __TURBOC__, or _AIX */ +# if 0 + /* haible@ilog.fr says this works for HPUX 9.05 and up, and on + HPUX 10. Eventually we can turn this on. */ +# ifdef __hpux +# 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 /* YYSTACK_USE_ALLOCA not defined */ + +#ifdef YYSTACK_USE_ALLOCA +# define YYSTACK_ALLOC alloca +#else +# define YYSTACK_ALLOC malloc +#endif #define yyerrok (yyerrstatus = 0) #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 - transition to the new meaning of YYERROR, for GCC. +/* Like YYERROR except do call yyerror. This remains here temporarily + to ease the transition to the new meaning of YYERROR, for GCC. Once GCC version 2 has supplanted version 1, this can go. */ #define YYFAIL goto yyerrlab #define YYRECOVERING() (!!yyerrstatus) -#define YYBACKUP(token, value) \ +#define YYBACKUP(Token, Value) \ do \ if (yychar == YYEMPTY && yylen == 1) \ - { yychar = (token), yylval = (value); \ + { \ + yychar = (Token); \ + yylval = (Value); \ yychar1 = YYTRANSLATE (yychar); \ YYPOPSTACK; \ goto yybackup; \ } \ else \ - { yyerror ("syntax error: cannot back up"); YYERROR; } \ + { \ + yyerror ("syntax error: cannot back up"); \ + YYERROR; \ + } \ while (0) #define YYTERROR 1 #define YYERRCODE 256 -#ifndef YYPURE -#define YYLEX yylex() -#endif - -#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 */ - -#ifndef YYPURE - -int yychar; /* the lookahead symbol */ -YYSTYPE yylval; /* the semantic value of the */ - /* lookahead symbol */ - -#ifdef YYLSP_NEEDED -YYLTYPE yylloc; /* location data for the lookahead */ - /* symbol */ -#endif - -int yynerrs; /* number of parse errors so far */ -#endif /* not YYPURE */ - -#if YYDEBUG != 0 -int yydebug; /* nonzero means print parse trace */ -/* Since this is uninitialized, it does not stop multiple parsers - from coexisting. */ -#endif - -/* YYINITDEPTH indicates the initial size of the parser's stacks */ +/* YYLLOC_DEFAULT -- Compute the default location (before the actions + are run). + + When YYLLOC_DEFAULT is run, CURRENT is set the location of the + first token. By default, to implement support for ranges, extend + its range to the last symbol. */ + +#ifndef YYLLOC_DEFAULT +# define YYLLOC_DEFAULT(Current, Last) \ + Current.last_line = Last.last_line; \ + Current.last_column = Last.last_column; +#endif + + +/* YYLEX -- calling `yylex' with the right arguments. */ + +#if YYPURE +# if YYLSP_NEEDED +# ifdef YYLEX_PARAM +# define YYLEX yylex (&yylval, &yylloc, YYLEX_PARAM) +# else +# define YYLEX yylex (&yylval, &yylloc) +# endif +# else /* !YYLSP_NEEDED */ +# ifdef YYLEX_PARAM +# define YYLEX yylex (&yylval, YYLEX_PARAM) +# else +# define YYLEX yylex (&yylval) +# endif +# endif /* !YYLSP_NEEDED */ +#else /* !YYPURE */ +# define YYLEX yylex () +#endif /* !YYPURE */ + + +/* Enable debugging if requested. */ +#if YYDEBUG +# define YYDPRINTF(Args) \ +do { \ + if (yydebug) \ + fprintf Args; \ +} while (0) +/* Nonzero means print parse trace. [The following comment makes no + sense to me. Could someone clarify it? --akim] Since this is + uninitialized, it does not stop multiple parsers from coexisting. + */ +int yydebug; +#else /* !YYDEBUG */ +# define YYDPRINTF(Args) +#endif /* !YYDEBUG */ + +/* YYINITDEPTH -- initial size of the parser's stacks. */ #ifndef YYINITDEPTH -#define YYINITDEPTH 200 +# define YYINITDEPTH 200 #endif -/* YYMAXDEPTH is the maximum size the stacks can grow to - (effective only if the built-in stack extension method is used). */ - +/* YYMAXDEPTH -- maximum size the stacks can grow to (effective only + if the built-in stack extension method is used). */ #if YYMAXDEPTH == 0 -#undef YYMAXDEPTH +# undef YYMAXDEPTH #endif #ifndef YYMAXDEPTH -#define YYMAXDEPTH 10000 +# define YYMAXDEPTH 10000 #endif /* Define __yy_memcpy. Note that the size argument @@ -156,9 +183,9 @@ int yydebug; /* nonzero means print parse trace */ of type size_t, but it can handle unsigned int. */ #if __GNUC__ > 1 /* GNU C and GNU C++ define this. */ -#define __yy_memcpy(TO,FROM,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 +# ifndef __cplusplus /* This is the most reliable way to avoid incompatibilities in available built-in functions on various systems. */ @@ -176,7 +203,7 @@ __yy_memcpy (to, from, count) *t++ = *f++; } -#else /* __cplusplus */ +# else /* __cplusplus */ /* This is the most reliable way to avoid incompatibilities in available built-in functions on various systems. */ @@ -191,10 +218,10 @@ __yy_memcpy (char *to, char *from, unsigned int count) *t++ = *f++; } -#endif +# endif #endif -#line 196 "bison.simple" +#line /* The user can define YYPARSE_PARAM as the name of an argument to be passed into yyparse. The argument should have type void *. @@ -203,75 +230,121 @@ __yy_memcpy (char *to, char *from, unsigned int count) 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 */ +# ifdef __cplusplus +# define YYPARSE_PARAM_ARG void *YYPARSE_PARAM +# define YYPARSE_PARAM_DECL +# else /* !__cplusplus */ +# define YYPARSE_PARAM_ARG YYPARSE_PARAM +# define YYPARSE_PARAM_DECL void *YYPARSE_PARAM; +# endif /* !__cplusplus */ +#else /* !YYPARSE_PARAM */ +# define YYPARSE_PARAM_ARG +# define YYPARSE_PARAM_DECL +#endif /* !YYPARSE_PARAM */ /* Prevent warning if -Wstrict-prototypes. */ #ifdef __GNUC__ -#ifdef YYPARSE_PARAM +# ifdef YYPARSE_PARAM int yyparse (void *); -#else +# else int yyparse (void); +# endif +#endif + +/* YY_DECL_VARIABLES -- depending whether we use a pure parser, + variables are global, or local to YYPARSE. */ + +#define _YY_DECL_VARIABLES \ +/* The lookahead symbol. */ \ +int yychar; \ + \ +/* The semantic value of the lookahead symbol. */ \ +YYSTYPE yylval; \ + \ +/* Number of parse errors so far. */ \ +int yynerrs; + +#if YYLSP_NEEDED +# define YY_DECL_VARIABLES \ +_YY_DECL_VARIABLES \ + \ +/* Location data for the lookahead symbol. */ \ +YYLTYPE yylloc; +#else +# define YY_DECL_VARIABLES \ +_YY_DECL_VARIABLES #endif -#endif + + +/* If nonreentrant, generate the variables here. */ + +#if !YYPURE +YY_DECL_VARIABLES +#endif /* !YYPURE */ int -yyparse(YYPARSE_PARAM_ARG) +yyparse (YYPARSE_PARAM_ARG) YYPARSE_PARAM_DECL { + /* If reentrant, generate the variables here. */ +#if YYPURE + YY_DECL_VARIABLES +#endif /* !YYPURE */ + register int yystate; register int yyn; + /* Number of tokens to shift before error messages enabled. */ + int yyerrstatus; + /* Lookahead token as an internal (translated) token number. */ + int yychar1 = 0; + + /* Three stacks and their tools: + `yyss': related to states, + `yysv': related to semantic values, + `yyls': related to locations. + + Refer to the stacks thru separate pointers, to allow yyoverflow + to reallocate them elsewhere. */ + + /* The state stack. */ + short yyssa[YYINITDEPTH]; + short *yyss = yyssa; register short *yyssp; - register YYSTYPE *yyvsp; - int yyerrstatus; /* number of tokens to shift before error messages enabled */ - int yychar1 = 0; /* lookahead token as an internal (translated) token number */ - - short yyssa[YYINITDEPTH]; /* the state stack */ - YYSTYPE yyvsa[YYINITDEPTH]; /* the semantic value stack */ - short *yyss = yyssa; /* refer to the stacks thru separate pointers */ - YYSTYPE *yyvs = yyvsa; /* to allow yyoverflow to reallocate them elsewhere */ + /* The semantic value stack. */ + YYSTYPE yyvsa[YYINITDEPTH]; + YYSTYPE *yyvs = yyvsa; + register YYSTYPE *yyvsp; -#ifdef YYLSP_NEEDED - YYLTYPE yylsa[YYINITDEPTH]; /* the location stack */ +#if YYLSP_NEEDED + /* The location stack. */ + YYLTYPE yylsa[YYINITDEPTH]; YYLTYPE *yyls = yylsa; YYLTYPE *yylsp; +#endif -#define YYPOPSTACK (yyvsp--, yyssp--, yylsp--) +#if YYLSP_NEEDED +# define YYPOPSTACK (yyvsp--, yyssp--, yylsp--) #else -#define YYPOPSTACK (yyvsp--, yyssp--) +# define YYPOPSTACK (yyvsp--, yyssp--) #endif int yystacksize = YYINITDEPTH; + int yyfree_stacks = 0; -#ifdef YYPURE - int yychar; - YYSTYPE yylval; - int yynerrs; -#ifdef YYLSP_NEEDED - YYLTYPE yylloc; -#endif -#endif - YYSTYPE yyval; /* the variable used to return */ - /* semantic values from the action */ - /* routines */ + /* The variables used to return semantic value and location from the + action routines. */ + YYSTYPE yyval; +# if YYLSP_NEEDED + YYLTYPE yyloc; +# endif + /* When reducing, the number of symbols on the RHS of the reduced + rule. */ int yylen; -#if YYDEBUG != 0 - if (yydebug) - fprintf(stderr, "Starting parse\n"); -#endif + YYDPRINTF ((stderr, "Starting parse\n")); yystate = 0; yyerrstatus = 0; @@ -285,24 +358,28 @@ yyparse(YYPARSE_PARAM_ARG) yyssp = yyss - 1; yyvsp = yyvs; -#ifdef YYLSP_NEEDED +#if YYLSP_NEEDED yylsp = yyls; #endif -/* Push a new state, which is found in yystate . */ -/* In all cases, when you get here, the value and location stacks - have just been pushed. so pushing a state here evens the stacks. */ -yynewstate: +/*------------------------------------------------------------. +| yynewstate -- Push a new state, which is found in yystate. | +`------------------------------------------------------------*/ +yynewstate: + /* In all cases, when you get here, the value and location stacks + have just been pushed. so pushing a state here evens the stacks. + */ *++yyssp = yystate; if (yyssp >= yyss + yystacksize - 1) { - /* Give user a chance to reallocate the stack */ - /* Use copies of these so that the &'s don't force the real ones into memory. */ + /* Give user a chance to reallocate the stack. Use copies of + these so that the &'s don't force the real ones into memory. + */ YYSTYPE *yyvs1 = yyvs; short *yyss1 = yyss; -#ifdef YYLSP_NEEDED +#if YYLSP_NEEDED YYLTYPE *yyls1 = yyls; #endif @@ -310,72 +387,82 @@ yynewstate: int size = yyssp - yyss + 1; #ifdef yyoverflow - /* Each stack pointer address is followed by the size of - the data in use in that stack, in bytes. */ -#ifdef YYLSP_NEEDED + /* Each stack pointer address is followed by the size of the + data in use in that stack, in bytes. */ +# if YYLSP_NEEDED /* This used to be a conditional around just the two extra args, but that might be undefined if yyoverflow is a macro. */ - yyoverflow("parser stack overflow", - &yyss1, size * sizeof (*yyssp), - &yyvs1, size * sizeof (*yyvsp), - &yyls1, size * sizeof (*yylsp), - &yystacksize); -#else - yyoverflow("parser stack overflow", - &yyss1, size * sizeof (*yyssp), - &yyvs1, size * sizeof (*yyvsp), - &yystacksize); -#endif + yyoverflow ("parser stack overflow", + &yyss1, size * sizeof (*yyssp), + &yyvs1, size * sizeof (*yyvsp), + &yyls1, size * sizeof (*yylsp), + &yystacksize); +# else + yyoverflow ("parser stack overflow", + &yyss1, size * sizeof (*yyssp), + &yyvs1, size * sizeof (*yyvsp), + &yystacksize); +# endif yyss = yyss1; yyvs = yyvs1; -#ifdef YYLSP_NEEDED +# if YYLSP_NEEDED yyls = yyls1; -#endif +# endif #else /* no yyoverflow */ /* Extend the stack our own way. */ if (yystacksize >= YYMAXDEPTH) { - yyerror("parser stack overflow"); + yyerror ("parser stack overflow"); + if (yyfree_stacks) + { + free (yyss); + free (yyvs); +# if YYLSP_NEEDED + free (yyls); +# endif + } return 2; } yystacksize *= 2; if (yystacksize > YYMAXDEPTH) yystacksize = YYMAXDEPTH; - yyss = (short *) alloca (yystacksize * sizeof (*yyssp)); +# 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 *) alloca (yystacksize * sizeof (*yyvsp)); + 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)); +# if YYLSP_NEEDED + yyls = (YYLTYPE *) YYSTACK_ALLOC (yystacksize * sizeof (*yylsp)); __yy_memcpy ((char *)yyls, (char *)yyls1, size * (unsigned int) sizeof (*yylsp)); -#endif +# endif #endif /* no yyoverflow */ yyssp = yyss + size - 1; yyvsp = yyvs + size - 1; -#ifdef YYLSP_NEEDED +#if YYLSP_NEEDED yylsp = yyls + size - 1; #endif -#if YYDEBUG != 0 - if (yydebug) - fprintf(stderr, "Stack size increased to %d\n", yystacksize); -#endif + YYDPRINTF ((stderr, "Stack size increased to %d\n", yystacksize)); if (yyssp >= yyss + yystacksize - 1) YYABORT; } -#if YYDEBUG != 0 - if (yydebug) - fprintf(stderr, "Entering state %d\n", yystate); -#endif + YYDPRINTF ((stderr, "Entering state %d\n", yystate)); goto yybackup; - yybackup: + + +/*-----------. +| yybackup. | +`-----------*/ +yybackup: /* Do appropriate processing given the current state. */ /* Read a lookahead token if we need one and don't already have one. */ @@ -394,10 +481,7 @@ yynewstate: if (yychar == YYEMPTY) { -#if YYDEBUG != 0 - if (yydebug) - fprintf(stderr, "Reading a token: "); -#endif + YYDPRINTF ((stderr, "Reading a token: ")); yychar = YYLEX; } @@ -408,24 +492,23 @@ yynewstate: yychar1 = 0; yychar = YYEOF; /* Don't call YYLEX any more */ -#if YYDEBUG != 0 - if (yydebug) - fprintf(stderr, "Now at end of input.\n"); -#endif + YYDPRINTF ((stderr, "Now at end of input.\n")); } else { - yychar1 = YYTRANSLATE(yychar); + yychar1 = YYTRANSLATE (yychar); -#if YYDEBUG != 0 +#if YYDEBUG + /* We have to keep this `#if YYDEBUG', since we use variables + which are defined only if `YYDEBUG' is set. */ if (yydebug) { fprintf (stderr, "Next token is %d (%s", yychar, yytname[yychar1]); - /* Give the individual parser a way to print the precise meaning - of a token, for further debugging info. */ -#ifdef YYPRINT + /* Give the individual parser a way to print the precise + meaning of a token, for further debugging info. */ +# ifdef YYPRINT YYPRINT (stderr, yychar, yylval); -#endif +# endif fprintf (stderr, ")\n"); } #endif @@ -458,41 +541,63 @@ yynewstate: YYACCEPT; /* Shift the lookahead token. */ - -#if YYDEBUG != 0 - if (yydebug) - fprintf(stderr, "Shifting token %d (%s), ", yychar, yytname[yychar1]); -#endif + YYDPRINTF ((stderr, "Shifting token %d (%s), ", yychar, yytname[yychar1])); /* Discard the token being shifted unless it is eof. */ if (yychar != YYEOF) yychar = YYEMPTY; *++yyvsp = yylval; -#ifdef YYLSP_NEEDED +#if YYLSP_NEEDED *++yylsp = yylloc; #endif - /* count tokens shifted since error; after three, turn off error status. */ - if (yyerrstatus) yyerrstatus--; + /* Count tokens shifted since error; after three, turn off error + status. */ + if (yyerrstatus) + yyerrstatus--; yystate = yyn; goto yynewstate; -/* Do the default action for the current state. */ -yydefault: +/*-----------------------------------------------------------. +| yydefault -- do the default action for the current state. | +`-----------------------------------------------------------*/ +yydefault: yyn = yydefact[yystate]; if (yyn == 0) goto yyerrlab; + goto yyreduce; + -/* Do a reduction. yyn is the number of a rule to reduce with. */ +/*-----------------------------. +| yyreduce -- Do a reduction. | +`-----------------------------*/ yyreduce: + /* yyn is the number of a rule to reduce with. */ yylen = yyr2[yyn]; - if (yylen > 0) - yyval = yyvsp[1-yylen]; /* implement default value of the action */ -#if YYDEBUG != 0 + /* If YYLEN is nonzero, implement the default value of the action: + `$$ = $1'. + + Otherwise, the following line sets YYVAL to the semantic value of + the lookahead token. This behavior is undocumented and Bison + users should not rely upon it. Assigning to YYVAL + unconditionally makes the parser a bit smaller, and it avoids a + GCC warning that YYVAL may be used uninitialized. */ + yyval = yyvsp[1-yylen]; + +#if YYLSP_NEEDED + /* Similarly for the default location. Let the user run additional + commands if for instance locations are ranges. */ + yyloc = yylsp[1-yylen]; + YYLLOC_DEFAULT (yyloc, yylsp[0]); +#endif + +#if YYDEBUG + /* We have to keep this `#if YYDEBUG', since we use variables which + are defined only if `YYDEBUG' is set. */ if (yydebug) { int i; @@ -506,17 +611,16 @@ yyreduce: fprintf (stderr, " -> %s\n", yytname[yyr1[yyn]]); } #endif - -$ /* the action file gets copied in in place of this dollarsign */ -#line 498 "bison.simple" +%% actions /* The action file replaces this line. */ +#line yyvsp -= yylen; yyssp -= yylen; -#ifdef YYLSP_NEEDED +#if YYLSP_NEEDED yylsp -= yylen; #endif -#if YYDEBUG != 0 +#if YYDEBUG if (yydebug) { short *ssp1 = yyss - 1; @@ -528,28 +632,13 @@ $ /* the action file gets copied in in place of this dollarsign */ #endif *++yyvsp = yyval; - -#ifdef YYLSP_NEEDED - yylsp++; - if (yylen == 0) - { - yylsp->first_line = yylloc.first_line; - yylsp->first_column = yylloc.first_column; - yylsp->last_line = (yylsp-1)->last_line; - yylsp->last_column = (yylsp-1)->last_column; - yylsp->text = 0; - } - else - { - yylsp->last_line = (yylsp+yylen-1)->last_line; - yylsp->last_column = (yylsp+yylen-1)->last_column; - } +#if YYLSP_NEEDED + *++yylsp = yyloc; #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. */ + /* 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]; @@ -561,10 +650,13 @@ $ /* the action file gets copied in in place of this dollarsign */ goto yynewstate; -yyerrlab: /* here on detecting error */ - if (! yyerrstatus) - /* If not already recovering from an error, report this error. */ +/*------------------------------------. +| yyerrlab -- here on detecting error | +`------------------------------------*/ +yyerrlab: + /* If not already recovering from an error, report this error. */ + if (!yyerrstatus) { ++yynerrs; @@ -580,83 +672,99 @@ yyerrlab: /* here on detecting error */ 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++) + x < (int) (sizeof (yytname) / sizeof (char *)); x++) if (yycheck[x + yyn] == x) - size += strlen(yytname[x]) + 15, count++; - msg = (char *) malloc(size + 15); + size += strlen (yytname[x]) + 15, count++; + size += strlen ("parse error, unexpected `") + 1; + size += strlen (yytname[YYTRANSLATE (yychar)]); + msg = (char *) malloc (size); if (msg != 0) { - strcpy(msg, "parse error"); + strcpy (msg, "parse error, unexpected `"); + strcat (msg, yytname[YYTRANSLATE (yychar)]); + strcat (msg, "'"); if (count < 5) { count = 0; for (x = (yyn < 0 ? -yyn : 0); - x < (sizeof(yytname) / sizeof(char *)); x++) + x < (int) (sizeof (yytname) / sizeof (char *)); x++) if (yycheck[x + yyn] == x) { - strcat(msg, count == 0 ? ", expecting `" : " or `"); - strcat(msg, yytname[x]); - strcat(msg, "'"); + strcat (msg, count == 0 ? ", expecting `" : " or `"); + strcat (msg, yytname[x]); + strcat (msg, "'"); count++; } } - yyerror(msg); - free(msg); + yyerror (msg); + free (msg); } else yyerror ("parse error; also virtual memory exceeded"); } else #endif /* YYERROR_VERBOSE */ - yyerror("parse error"); + yyerror ("parse error"); } - goto yyerrlab1; -yyerrlab1: /* here on error raised explicitly by an action */ + +/*--------------------------------------------------. +| yyerrlab1 -- error raised explicitly by an action | +`--------------------------------------------------*/ +yyerrlab1: if (yyerrstatus == 3) { - /* if just tried and failed to reuse lookahead token after an error, discard it. */ + /* 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 - + YYDPRINTF ((stderr, "Discarding token %d (%s).\n", + yychar, yytname[yychar1])); yychar = YYEMPTY; } - /* Else will try to reuse lookahead token - after shifting the error token. */ + /* 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. */ +/*-------------------------------------------------------------------. +| yyerrdefault -- current state does not do anything special for the | +| error token. | +`-------------------------------------------------------------------*/ +yyerrdefault: #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; + + /* If its default is to accept any token, ok. Otherwise pop it. */ + yyn = yydefact[yystate]; + if (yyn) + goto yydefault; #endif -yyerrpop: /* pop the current state because it cannot handle the error token */ - if (yyssp == yyss) YYABORT; +/*---------------------------------------------------------------. +| yyerrpop -- pop the current state because it cannot handle the | +| error token | +`---------------------------------------------------------------*/ +yyerrpop: + if (yyssp == yyss) + YYABORT; yyvsp--; yystate = *--yyssp; -#ifdef YYLSP_NEEDED +#if YYLSP_NEEDED yylsp--; #endif -#if YYDEBUG != 0 +#if YYDEBUG if (yydebug) { short *ssp1 = yyss - 1; @@ -667,8 +775,10 @@ yyerrpop: /* pop the current state because it cannot handle the error token */ } #endif +/*--------------. +| yyerrhandle. | +`--------------*/ yyerrhandle: - yyn = yypact[yystate]; if (yyn == YYFLAG) goto yyerrdefault; @@ -691,16 +801,43 @@ yyerrhandle: if (yyn == YYFINAL) YYACCEPT; -#if YYDEBUG != 0 - if (yydebug) - fprintf(stderr, "Shifting error token, "); -#endif + YYDPRINTF ((stderr, "Shifting error token, ")); *++yyvsp = yylval; -#ifdef YYLSP_NEEDED +#if YYLSP_NEEDED *++yylsp = yylloc; #endif yystate = yyn; goto yynewstate; + + +/*-------------------------------------. +| yyacceptlab -- YYACCEPT comes here. | +`-------------------------------------*/ +yyacceptlab: + if (yyfree_stacks) + { + free (yyss); + free (yyvs); +#if YYLSP_NEEDED + free (yyls); +#endif + } + return 0; + + +/*-----------------------------------. +| yyabortlab -- YYABORT comes here. | +`-----------------------------------*/ +yyabortlab: + if (yyfree_stacks) + { + free (yyss); + free (yyvs); +#if YYLSP_NEEDED + free (yyls); +#endif + } + return 1; }