X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/4b3673159e964d290cc78ae6fd325684d6c6004d..06f01bc4964795ec030c756e292f52b6f439a3d4:/data/yacc.c diff --git a/data/yacc.c b/data/yacc.c index 7af81941..dc4fdf49 100644 --- a/data/yacc.c +++ b/data/yacc.c @@ -2,7 +2,7 @@ m4_divert(-1) -*- C -*- # Yacc compatible skeleton for Bison -# Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005 +# Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006 # Free Software Foundation, Inc. # This program is free software; you can redistribute it and/or modify @@ -20,7 +20,7 @@ m4_divert(-1) -*- C -*- # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA # 02110-1301 USA - +m4_include(b4_pkgdatadir/[c.m4]) ## ---------------- ## ## Default values. ## @@ -41,8 +41,8 @@ m4_define_default([b4_stack_depth_init], [200]) # Expand IF-TRUE, if %pure-parser and %parse-param, IF-FALSE otherwise. m4_define([b4_yacc_pure_if], [b4_pure_if([m4_ifset([b4_parse_param], - [$1], [$2])], - [$2])]) + [$1], [$2])], + [$2])]) # b4_yyerror_args @@ -82,7 +82,7 @@ m4_define([b4_int_type], m4_eval([0 <= $1]), [1], [unsigned int], - [int])]) + [int])]) ## ----------------- ## @@ -102,7 +102,7 @@ m4_define([b4_lhs_value], # Expansion of $NUM, where the current rule has RULE-LENGTH # symbols on RHS. m4_define([b4_rhs_value], -[(yyvsp@{m4_eval([$2 - $1])@}m4_ifval([$3], [.$3]))]) +[(yyvsp@{($2) - ($1)@}m4_ifval([$3], [.$3]))]) @@ -122,7 +122,7 @@ m4_define([b4_lhs_location], # Expansion of @NUM, where the current rule has RULE-LENGTH symbols # on RHS. m4_define([b4_rhs_location], -[(yylsp@{m4_eval([$2 - $1])@})]) +[(yylsp@{($2) - ($1)@})]) @@ -135,15 +135,15 @@ m4_changecom() m4_divert(0)dnl @output @output_parser_name@ b4_copyright([Skeleton parser for Yacc-like parsing with Bison], - [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005])[ + [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006])[ /* 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. */ -/* Written by Richard Stallman by simplifying the original so called - ``semantic'' parser. */ +/* C LALR(1) parser skeleton written by Richard Stallman, by + simplifying the original so-called "semantic" parser. */ /* All symbols defined below should begin with yy or YY, to avoid infringing on user name space. This should be done even for local @@ -187,19 +187,20 @@ b4_location_if([#define yylloc b4_prefix[]lloc])])[ # define YYTOKEN_TABLE ]b4_token_table[ #endif -#if ! defined (YYSTYPE) && ! defined (YYSTYPE_IS_DECLARED) +#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED ]m4_ifdef([b4_stype], -[b4_syncline([b4_stype_line], [b4_file_name]) -typedef union m4_bregexp(b4_stype, [^{], [YYSTYPE ])b4_stype YYSTYPE; +[typedef union[]m4_bregexp(b4_stype, [^{], [ YYSTYPE]) +b4_stype /* Line __line__ of yacc.c. */ -b4_syncline([@oline@], [@ofile@])], +b4_syncline([@oline@], [@ofile@]) + YYSTYPE;], [typedef int YYSTYPE;])[ # define yystype YYSTYPE /* obsolescent; will be withdrawn */ # define YYSTYPE_IS_DECLARED 1 # define YYSTYPE_IS_TRIVIAL 1 #endif -]b4_location_if([#if ! defined (YYLTYPE) && ! defined (YYLTYPE_IS_DECLARED) +]b4_location_if([#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED typedef struct YYLTYPE { int first_line; @@ -219,25 +220,12 @@ typedef struct YYLTYPE /* Line __line__ of yacc.c. */ b4_syncline([@oline@], [@ofile@])[ -/* Define YYMODERN_C if this compiler supports C89 or better. If - __STDC__ is defined, the compiler is modern. IBM xlc 7.0 when run - as 'cc' doesn't define __STDC__ (or __STDC_VERSION__) for pedantic - reasons, but it defines __C99__FUNC__ so check that as well. - Consider a C++ compiler to be modern if it defines __cplusplus. */ -#ifndef YYMODERN_C -# if defined (__STDC__) || defined (__C99__FUNC__) || defined (__cplusplus) -# define YYMODERN_C 1 -# else -# define YYMODERN_C 0 -# endif -#endif - #ifndef YYSIZE_T -# if defined (__SIZE_TYPE__) +# ifdef __SIZE_TYPE__ # define YYSIZE_T __SIZE_TYPE__ -# elif defined (size_t) +# elif defined size_t # define YYSIZE_T size_t -# elif ! defined (YYSIZE_T) && YYMODERN_C +# elif ! defined YYSIZE_T && ]b4_c_modern[ # include /* INFRINGES ON USER NAME SPACE */ # define YYSIZE_T size_t # else @@ -260,9 +248,23 @@ b4_syncline([@oline@], [@ofile@])[ #endif /* Suppress unused-variable warnings by "using" E. */ -#define YYUSE(e) do {;} while (/*CONSTCOND*/ 0 && (e)) +#if ! defined lint || defined __GNUC__ +# define YYUSE(e) ((void) (e)) +#else +# define YYUSE(e) /* empty */ +#endif -#if ! defined (yyoverflow) || YYERROR_VERBOSE +/* Identity function, used to suppress warnings about constant conditions. */ +#ifndef lint +# define YYID(n) (n) +#else +]b4_c_function_def([YYID], [static int], [[int i], [i]])[ +{ + return i; +} +#endif + +#if ! defined yyoverflow || YYERROR_VERBOSE /* The parser invokes alloca or malloc; define the necessary symbols. */ @@ -270,16 +272,16 @@ b4_syncline([@oline@], [@ofile@])[ # if YYSTACK_USE_ALLOCA # ifdef __GNUC__ # define YYSTACK_ALLOC __builtin_alloca -# elif defined (__BUILTIN_VA_ARG_INCR) +# elif defined __BUILTIN_VA_ARG_INCR # include /* INFRINGES ON USER NAME SPACE */ -# elif defined (_AIX) +# elif defined _AIX # define YYSTACK_ALLOC __alloca -# elif defined (_MSC_VER) +# elif defined _MSC_VER # include /* INFRINGES ON USER NAME SPACE */ # define alloca _alloca # else # define YYSTACK_ALLOC alloca -# if ! defined (_ALLOCA_H) && ! defined (_STDLIB_H) && YYMODERN_C +# if ! defined _ALLOCA_H && ! defined _STDLIB_H && ]b4_c_modern[ # include /* INFRINGES ON USER NAME SPACE */ # ifndef _STDLIB_H # define _STDLIB_H 1 @@ -290,14 +292,14 @@ b4_syncline([@oline@], [@ofile@])[ # endif # ifdef YYSTACK_ALLOC - /* Pacify GCC's `empty if-body' warning. */ -# define YYSTACK_FREE(Ptr) do { /* empty */; } while (0) + /* Pacify GCC's `empty if-body' warning. */ +# define YYSTACK_FREE(Ptr) do { /* empty */; } while (YYID (0)) # ifndef YYSTACK_ALLOC_MAXIMUM /* The OS might guarantee only one guard page at the bottom of the stack, and a page size can be as small as 4096 bytes. So we cannot safely invoke alloca (N) if N exceeds 4096. Use a slightly smaller number to allow for a few compiler-allocated temporary stack slots. */ -# define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2005 */ +# define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */ # endif # else # define YYSTACK_ALLOC YYMALLOC @@ -310,13 +312,13 @@ extern "C" { # endif # ifndef YYMALLOC # define YYMALLOC malloc -# if ! defined (malloc) && ! defined (_STDLIB_H) && YYMODERN_C +# if ! defined malloc && ! defined _STDLIB_H && ]b4_c_modern[ void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */ # endif # endif # ifndef YYFREE # define YYFREE free -# if ! defined (free) && ! defined (_STDLIB_H) && YYMODERN_C +# if ! defined free && ! defined _STDLIB_H && ]b4_c_modern[ void free (void *); /* INFRINGES ON USER NAME SPACE */ # endif # endif @@ -324,13 +326,13 @@ void free (void *); /* INFRINGES ON USER NAME SPACE */ } # endif # endif -#endif /* ! defined (yyoverflow) || YYERROR_VERBOSE */ +#endif /* ! defined yyoverflow || YYERROR_VERBOSE */ -#if (! defined (yyoverflow) \ - && (! defined (__cplusplus) \ - || (]b4_location_if([[defined (YYLTYPE_IS_TRIVIAL) && YYLTYPE_IS_TRIVIAL \ - && ]])[defined (YYSTYPE_IS_TRIVIAL) && YYSTYPE_IS_TRIVIAL))) +#if (! defined yyoverflow \ + && (! defined __cplusplus \ + || (]b4_location_if([[defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL \ + && ]])[defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL))) /* A type that is properly aligned for any stack member. */ union yyalloc @@ -357,7 +359,7 @@ union yyalloc /* Copy COUNT objects from FROM to TO. The source and destination do not overlap. */ # ifndef YYCOPY -# if defined (__GNUC__) && 1 < __GNUC__ +# if defined __GNUC__ && 1 < __GNUC__ # define YYCOPY(To, From, Count) \ __builtin_memcpy (To, From, (Count) * sizeof (*(From))) # else @@ -368,7 +370,7 @@ union yyalloc for (yyi = 0; yyi < (Count); yyi++) \ (To)[yyi] = (From)[yyi]; \ } \ - while (/*CONSTCOND*/ 0) + while (YYID (0)) # endif # endif @@ -386,28 +388,28 @@ union yyalloc yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \ yyptr += yynewbytes / sizeof (*yyptr); \ } \ - while (/*CONSTCOND*/ 0) + while (YYID (0)) #endif -#if YYMODERN_C +#if ]b4_c_modern[ typedef signed char yysigned_char; #else typedef short int yysigned_char; #endif -/* YYFINAL -- State number of the termination state. */ +/* YYFINAL -- State number of the termination state. */ #define YYFINAL ]b4_final_state_number[ /* YYLAST -- Last index in YYTABLE. */ #define YYLAST ]b4_last[ -/* YYNTOKENS -- Number of terminals. */ +/* YYNTOKENS -- Number of terminals. */ #define YYNTOKENS ]b4_tokens_number[ -/* YYNNTS -- Number of nonterminals. */ +/* YYNNTS -- Number of nonterminals. */ #define YYNNTS ]b4_nterms_number[ -/* YYNRULES -- Number of rules. */ +/* YYNRULES -- Number of rules. */ #define YYNRULES ]b4_rules_number[ -/* YYNRULES -- Number of states. */ +/* YYNRULES -- Number of states. */ #define YYNSTATES ]b4_states_number[ /* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */ @@ -431,7 +433,7 @@ static const ]b4_int_type_for([b4_prhs])[ yyprhs[] = ]b4_prhs[ }; -/* YYRHS -- A `-1'-separated list of the rules' RHS. */ +/* YYRHS -- A `-1'-separated list of the rules' RHS. */ static const ]b4_int_type_for([b4_rhs])[ yyrhs[] = { ]b4_rhs[ @@ -446,7 +448,7 @@ static const ]b4_int_type_for([b4_rline])[ yyrline[] = #if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM. - First, the terminals, then, starting at YYNTOKENS, nonterminals. */ + First, the terminals, then, starting at YYNTOKENS, nonterminals. */ static const char *const yytname[] = { ]b4_tname[ @@ -482,7 +484,7 @@ static const ]b4_int_type_for([b4_defact])[ yydefact[] = ]b4_defact[ }; -/* YYDEFGOTO[NTERM-NUM]. */ +/* YYDEFGOTO[NTERM-NUM]. */ static const ]b4_int_type_for([b4_defgoto])[ yydefgoto[] = { ]b4_defgoto[ @@ -549,7 +551,7 @@ do \ yychar = (Token); \ yylval = (Value); \ yytoken = YYTRANSLATE (yychar); \ - YYPOPSTACK; \ + YYPOPSTACK (1); \ goto yybackup; \ } \ else \ @@ -557,7 +559,7 @@ do \ yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \ YYERROR; \ } \ -while (/*CONSTCOND*/ 0) +while (YYID (0)) #define YYTERROR 1 @@ -572,7 +574,7 @@ while (/*CONSTCOND*/ 0) #ifndef YYLLOC_DEFAULT # define YYLLOC_DEFAULT(Current, Rhs, N) \ do \ - if (N) \ + if (YYID (N)) \ { \ (Current).first_line = YYRHSLOC (Rhs, 1).first_line; \ (Current).first_column = YYRHSLOC (Rhs, 1).first_column; \ @@ -586,7 +588,7 @@ while (/*CONSTCOND*/ 0) (Current).first_column = (Current).last_column = \ YYRHSLOC (Rhs, 0).last_column; \ } \ - while (/*CONSTCOND*/ 0) + while (YYID (0)) #endif @@ -598,8 +600,8 @@ while (/*CONSTCOND*/ 0) # if YYLTYPE_IS_TRIVIAL # define YY_LOCATION_PRINT(File, Loc) \ fprintf (File, "%d.%d-%d.%d", \ - (Loc).first_line, (Loc).first_column, \ - (Loc).last_line, (Loc).last_column) + (Loc).first_line, (Loc).first_column, \ + (Loc).last_line, (Loc).last_column) # else # define YY_LOCATION_PRINT(File, Loc) ((void) 0) # endif @@ -626,18 +628,20 @@ while (/*CONSTCOND*/ 0) do { \ if (yydebug) \ YYFPRINTF Args; \ -} while (/*CONSTCOND*/ 0) +} while (YYID (0)) # define YY_SYMBOL_PRINT(Title, Type, Value, Location) \ do { \ if (yydebug) \ { \ YYFPRINTF (stderr, "%s ", Title); \ - yysymprint (stderr, \ - Type, Value]b4_location_if([, Location])[]b4_user_args[); \ + yy_symbol_print (stderr, \ + Type, Value]b4_location_if([, Location])[]b4_user_args[); \ YYFPRINTF (stderr, "\n"); \ } \ -} while (/*CONSTCOND*/ 0) +} while (YYID (0)) + +]b4_yy_symbol_print_generate([b4_c_function_def])[ /*------------------------------------------------------------------. | yy_stack_print -- Print the state stack from its BOTTOM up to its | @@ -645,11 +649,11 @@ do { \ `------------------------------------------------------------------*/ ]b4_c_function_def([yy_stack_print], [static void], - [[short int *bottom], [bottom]], - [[short int *top], [top]])[ + [[short int *bottom], [bottom]], + [[short int *top], [top]])[ { YYFPRINTF (stderr, "Stack now"); - for (/* Nothing. */; bottom <= top; ++bottom) + for (; bottom <= top; ++bottom) YYFPRINTF (stderr, " %d", *bottom); YYFPRINTF (stderr, "\n"); } @@ -658,7 +662,7 @@ do { \ do { \ if (yydebug) \ yy_stack_print ((Bottom), (Top)); \ -} while (/*CONSTCOND*/ 0) +} while (YYID (0)) /*------------------------------------------------. @@ -666,23 +670,33 @@ do { \ `------------------------------------------------*/ ]b4_c_function_def([yy_reduce_print], [static void], - [[int yyrule], [yyrule]])[ + [[YYSTYPE *yyvsp], [yyvsp]], + b4_location_if([[[YYLTYPE *yylsp], [yylsp]],]) + [[int yyrule], [yyrule]]m4_ifset([b4_parse_param], [,]) + b4_parse_param)[ { + int yynrhs = yyr2[yyrule]; int yyi; unsigned long int yylno = yyrline[yyrule]; - YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu), ", - yyrule - 1, yylno); - /* Print the symbols being reduced, and their result. */ - for (yyi = yyprhs[yyrule]; 0 <= yyrhs[yyi]; yyi++) - YYFPRINTF (stderr, "%s ", yytname[yyrhs[yyi]]); - YYFPRINTF (stderr, "-> %s\n", yytname[yyr1[yyrule]]); + YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n", + yyrule - 1, yylno); + /* The symbols being reduced. */ + for (yyi = 0; yyi < yynrhs; yyi++) + { + fprintf (stderr, " $%d = ", yyi + 1); + yy_symbol_print (stderr, yyrhs[yyprhs[yyrule] + yyi], + &]b4_rhs_value(yynrhs, yyi + 1)[ + ]b4_location_if([, &]b4_rhs_location(yynrhs, yyi + 1))[]dnl + b4_user_args[); + fprintf (stderr, "\n"); + } } # define YY_REDUCE_PRINT(Rule) \ do { \ if (yydebug) \ - yy_reduce_print (Rule); \ -} while (/*CONSTCOND*/ 0) + yy_reduce_print (yyvsp, ]b4_location_if([yylsp, ])[Rule]b4_user_args[); \ +} while (YYID (0)) /* Nonzero means print parse trace. It is left uninitialized so that multiple parsers can coexist. */ @@ -716,42 +730,29 @@ int yydebug; #if YYERROR_VERBOSE # ifndef yystrlen -# if defined (__GLIBC__) && defined (_STRING_H) +# if defined __GLIBC__ && defined _STRING_H # define yystrlen strlen # else /* Return the length of YYSTR. */ -static YYSIZE_T -# if YYMODERN_C -yystrlen (const char *yystr) -# else -yystrlen (yystr) - const char *yystr; -# endif +]b4_c_function_def([yystrlen], [static YYSIZE_T], + [[const char *yystr], [yystr]])[ { - const char *yys = yystr; - - while (*yys++ != '\0') + YYSIZE_T yylen; + for (yylen = 0; yystr[yylen]; yylen++) continue; - - return yys - yystr - 1; + return yylen; } # endif # endif # ifndef yystpcpy -# if defined (__GLIBC__) && defined (_STRING_H) && defined (_GNU_SOURCE) +# if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE # define yystpcpy stpcpy # else /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in YYDEST. */ -static char * -# if YYMODERN_C -yystpcpy (char *yydest, const char *yysrc) -# else -yystpcpy (yydest, yysrc) - char *yydest; - const char *yysrc; -# endif +]b4_c_function_def([yystpcpy], [static char *], + [[char *yydest], [yydest]], [[const char *yysrc], [yysrc]])[ { char *yyd = yydest; const char *yys = yysrc; @@ -839,7 +840,7 @@ yysyntax_error (char *yyresult, int yystate, int yychar) # if 0 /* This is so xgettext sees the translatable formats that are - constructed on the fly. */ + constructed on the fly. */ YY_("syntax error, unexpected %s"); YY_("syntax error, unexpected %s, expecting %s"); YY_("syntax error, unexpected %s, expecting %s or %s"); @@ -852,13 +853,13 @@ yysyntax_error (char *yyresult, int yystate, int yychar) static char const yyexpecting[] = ", expecting %s"; static char const yyor[] = " or %s"; char yyformat[sizeof yyunexpected - + sizeof yyexpecting - 1 - + ((YYERROR_VERBOSE_ARGS_MAXIMUM - 2) - * (sizeof yyor - 1))]; + + sizeof yyexpecting - 1 + + ((YYERROR_VERBOSE_ARGS_MAXIMUM - 2) + * (sizeof yyor - 1))]; char const *yyprefix = yyexpecting; /* Start YYX at -YYN if negative to avoid negative indexes in - YYCHECK. */ + YYCHECK. */ int yyxbegin = yyn < 0 ? -yyn : 0; /* Stay within bounds of both yycheck and yytname. */ @@ -870,26 +871,26 @@ yysyntax_error (char *yyresult, int yystate, int yychar) yyfmt = yystpcpy (yyformat, yyunexpected); for (yyx = yyxbegin; yyx < yyxend; ++yyx) - if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR) - { - if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM) - { - yycount = 1; - yysize = yysize0; - yyformat[sizeof yyunexpected - 1] = '\0'; - break; - } - yyarg[yycount++] = yytname[yyx]; - yysize1 = yysize + yytnamerr (0, yytname[yyx]); - yysize_overflow |= yysize1 < yysize; - yysize = yysize1; - yyfmt = yystpcpy (yyfmt, yyprefix); - yyprefix = yyor; - } + if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR) + { + if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM) + { + yycount = 1; + yysize = yysize0; + yyformat[sizeof yyunexpected - 1] = '\0'; + break; + } + yyarg[yycount++] = yytname[yyx]; + yysize1 = yysize + yytnamerr (0, yytname[yyx]); + yysize_overflow |= (yysize1 < yysize); + yysize = yysize1; + yyfmt = yystpcpy (yyfmt, yyprefix); + yyprefix = yyor; + } yyf = YY_(yyformat); yysize1 = yysize + yystrlen (yyf); - yysize_overflow |= yysize1 < yysize; + yysize_overflow |= (yysize1 < yysize); yysize = yysize1; if (yysize_overflow) @@ -897,51 +898,45 @@ yysyntax_error (char *yyresult, int yystate, int yychar) if (yyresult) { - /* Avoid sprintf, as that infringes on the user's name space. - Don't have undefined behavior even if the translation - produced a string with the wrong number of "%s"s. */ - char *yyp = yyresult; - int yyi = 0; - while ((*yyp = *yyf)) - { - if (*yyp == '%' && yyf[1] == 's' && yyi < yycount) - { - yyp += yytnamerr (yyp, yyarg[yyi++]); - yyf += 2; - } - else - { - yyp++; - yyf++; - } - } - } + /* Avoid sprintf, as that infringes on the user's name space. + Don't have undefined behavior even if the translation + produced a string with the wrong number of "%s"s. */ + char *yyp = yyresult; + int yyi = 0; + while ((*yyp = *yyf) != '\0') + { + if (*yyp == '%' && yyf[1] == 's' && yyi < yycount) + { + yyp += yytnamerr (yyp, yyarg[yyi++]); + yyf += 2; + } + else + { + yyp++; + yyf++; + } + } + } return yysize; } } #endif /* YYERROR_VERBOSE */ -#if YYDEBUG -]b4_yysymprint_generate([b4_c_function_def])[ -#endif /* ! YYDEBUG */ -]b4_yydestruct_generate([b4_c_function_def]) +]b4_yydestruct_generate([b4_c_function_def])[ /* Prevent warnings from -Wmissing-prototypes. */ #ifdef YYPARSE_PARAM -# if YYMODERN_C -int yyparse (void *YYPARSE_PARAM); -# else -int yyparse (); -# endif +]b4_c_function_decl([yyparse], [int], + [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[ #else /* ! YYPARSE_PARAM */ -b4_c_function_decl([yyparse], [int], b4_parse_param) +]b4_c_function_decl([yyparse], [int], b4_parse_param)[ #endif /* ! YYPARSE_PARAM */ -m4_divert_push([KILL])# ======================== M4 code. +]m4_divert_push([KILL])# ======================== M4 code. # b4_declare_parser_variables # --------------------------- # Declare the variables that are global, or local to YYPARSE if @@ -961,7 +956,7 @@ YYLTYPE yylloc;]) m4_divert_pop([KILL])dnl# ====================== End of M4 code. b4_pure_if([], - [b4_declare_parser_variables]) + [b4_declare_parser_variables]) /*----------. @@ -969,12 +964,7 @@ b4_pure_if([], `----------*/ #ifdef YYPARSE_PARAM -# if YYMODERN_C -int yyparse (void *YYPARSE_PARAM) -# else -int yyparse (YYPARSE_PARAM) - void *YYPARSE_PARAM; -# endif +b4_c_function_def([yyparse], [int], [[void *YYPARSE_PARAM], [YYPARSE_PARAM]]) #else /* ! YYPARSE_PARAM */ b4_c_function_def([yyparse], [int], b4_parse_param) #endif @@ -1017,10 +1007,10 @@ b4_c_function_def([yyparse], [int], b4_parse_param) YYLTYPE yylsa[YYINITDEPTH]; YYLTYPE *yyls = yylsa; YYLTYPE *yylsp; - /* The locations where the error started and ended. */ + /* The locations where the error started and ended. */ YYLTYPE yyerror_range[2];]])[ -#define YYPOPSTACK (yyvsp--, yyssp--]b4_location_if([, yylsp--])[) +#define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N)]b4_location_if([, yylsp -= (N)])[) YYSIZE_T yystacksize = YYINITDEPTH; @@ -1029,9 +1019,9 @@ b4_c_function_def([yyparse], [int], b4_parse_param) YYSTYPE yyval; ]b4_location_if([ YYLTYPE yyloc;])[ - /* When reducing, the number of symbols on the RHS of the reduced - rule. */ - int yylen; + /* The number of symbols on the RHS of the reduced rule. + Keep to zero when no symbol should be popped. */ + int yylen = 0; YYDPRINTF ((stderr, "Starting parse\n")); @@ -1057,7 +1047,7 @@ b4_c_function_def([yyparse], [int], b4_parse_param) m4_ifdef([b4_initial_action], [ m4_pushdef([b4_at_dollar], [m4_define([b4_at_dollar_used])yylloc])dnl m4_pushdef([b4_dollar_dollar], [m4_define([b4_dollar_dollar_used])yylval])dnl - /* User initialization code. */ + /* User initialization code. */ b4_initial_action m4_popdef([b4_dollar_dollar])dnl m4_popdef([b4_at_dollar])dnl @@ -1075,8 +1065,7 @@ m4_ifdef([b4_at_dollar_used], [[ yylsp[0] = yylloc; `------------------------------------------------------------*/ 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. - */ + have just been pushed. So pushing a state here evens the stacks. */ yyssp++; yysetstate: @@ -1089,7 +1078,7 @@ m4_ifdef([b4_at_dollar_used], [[ yylsp[0] = yylloc; #ifdef yyoverflow { - /* Give user a chance to reallocate the stack. Use copies of + /* 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; @@ -1156,12 +1145,10 @@ m4_ifdef([b4_at_dollar_used], [[ yylsp[0] = yylloc; `-----------*/ yybackup: -/* Do appropriate processing given the current state. */ -/* Read a look-ahead token if we need one and don't already have one. */ -/* yyresume: */ + /* Do appropriate processing given the current state. Read a + look-ahead token if we need one and don't already have one. */ /* First try to decide what to do without reference to look-ahead token. */ - yyn = yypact[yystate]; if (yyn == YYPACT_NINF) goto yydefault; @@ -1203,22 +1190,21 @@ yybackup: if (yyn == YYFINAL) YYACCEPT; + /* Count tokens shifted since error; after three, turn off error + status. */ + if (yyerrstatus) + yyerrstatus--; + /* Shift the look-ahead token. */ YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc); - /* Discard the token being shifted unless it is eof. */ + /* Discard the shifted token unless it is eof. */ if (yychar != YYEOF) yychar = YYEMPTY; + yystate = yyn; *++yyvsp = yylval; ]b4_location_if([ *++yylsp = yylloc;])[ - - /* Count tokens shifted since error; after three, turn off error - status. */ - if (yyerrstatus) - yyerrstatus--; - - yystate = yyn; goto yynewstate; @@ -1250,22 +1236,20 @@ yyreduce: yyval = yyvsp[1-yylen]; ]b4_location_if( -[[ /* Default location. */ +[[ /* Default location. */ YYLLOC_DEFAULT (yyloc, yylsp - yylen, yylen);]])[ YY_REDUCE_PRINT (yyn); switch (yyn) - ]{ - b4_actions + { + ]b4_actions +/* Line __line__ of yacc.c. */ +b4_syncline([@oline@], [@ofile@])[ default: break; } + YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc); -/* Line __line__ of yacc.c. */ -b4_syncline([@oline@], [@ofile@]) - -[ yyvsp -= yylen; - yyssp -= yylen; -]b4_location_if([ yylsp -= yylen;])[ - + YYPOPSTACK (yylen); + yylen = 0; YY_STACK_PRINT (yyss, yyssp); *++yyvsp = yyval; @@ -1339,15 +1323,15 @@ yyerrlab: error, discard it. */ if (yychar <= YYEOF) - { + { /* Return failure if at end of input. */ if (yychar == YYEOF) YYABORT; - } + } else { yydestruct ("Error: discarding", - yytoken, &yylval]b4_location_if([, &yylloc])[]b4_user_args[); + yytoken, &yylval]b4_location_if([, &yylloc])[]b4_user_args[); yychar = YYEMPTY; } } @@ -1369,9 +1353,11 @@ yyerrorlab: goto yyerrorlab; ]b4_location_if([[ yyerror_range[0] = yylsp[1-yylen]; - yylsp -= yylen; - ]])[yyvsp -= yylen; - yyssp -= yylen; +]])[ /* Do not reclaim the symbols of the rule which action triggered + this YYERROR. */ + YYPOPSTACK (yylen); + yylen = 0; + YY_STACK_PRINT (yyss, yyssp); yystate = *yyssp; goto yyerrlab1; @@ -1402,8 +1388,8 @@ yyerrlab1: ]b4_location_if([[ yyerror_range[0] = *yylsp;]])[ yydestruct ("Error: popping", - yystos[yystate], yyvsp]b4_location_if([, yylsp])[]b4_user_args[); - YYPOPSTACK; + yystos[yystate], yyvsp]b4_location_if([, yylsp])[]b4_user_args[); + YYPOPSTACK (1); yystate = *yyssp; YY_STACK_PRINT (yyss, yyssp); } @@ -1415,11 +1401,11 @@ yyerrlab1: ]b4_location_if([[ yyerror_range[1] = yylloc; /* Using YYLLOC is tempting, but would change the location of - the look-ahead. YYLOC is available though. */ + the look-ahead. YYLOC is available though. */ YYLLOC_DEFAULT (yyloc, yyerror_range - 1, 2); *++yylsp = yyloc;]])[ - /* Shift the error token. */ + /* Shift the error token. */ YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp); yystate = yyn; @@ -1454,11 +1440,15 @@ yyreturn: if (yychar != YYEOF && yychar != YYEMPTY) yydestruct ("Cleanup: discarding lookahead", yytoken, &yylval]b4_location_if([, &yylloc])[]b4_user_args[); + /* Do not reclaim the symbols of the rule which action triggered + this YYABORT or YYACCEPT. */ + YYPOPSTACK (yylen); + YY_STACK_PRINT (yyss, yyssp); while (yyssp != yyss) { yydestruct ("Cleanup: popping", yystos[*yyssp], yyvsp]b4_location_if([, yylsp])[]b4_user_args[); - YYPOPSTACK; + YYPOPSTACK (1); } #ifndef yyoverflow if (yyss != yyssa) @@ -1476,7 +1466,7 @@ b4_epilogue m4_if(b4_defines_flag, 0, [], [@output @output_header_name@ b4_copyright([Skeleton parser for Yacc-like parsing with Bison], - [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005]) + [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006]) /* As a special exception, when this file is copied by Bison into a Bison output file, you may use that output file without restriction. @@ -1485,12 +1475,13 @@ b4_copyright([Skeleton parser for Yacc-like parsing with Bison], b4_token_enums_defines(b4_tokens) -#if ! defined (YYSTYPE) && ! defined (YYSTYPE_IS_DECLARED) +#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED m4_ifdef([b4_stype], -[b4_syncline([b4_stype_line], [b4_file_name]) -typedef union m4_bregexp(b4_stype, [^{], [YYSTYPE ])b4_stype YYSTYPE; +[typedef union[]m4_bregexp(b4_stype, [^{], [ YYSTYPE]) +b4_stype /* Line __line__ of yacc.c. */ -b4_syncline([@oline@], [@ofile@])], +b4_syncline([@oline@], [@ofile@]) + YYSTYPE;], [typedef int YYSTYPE;]) # define yystype YYSTYPE /* obsolescent; will be withdrawn */ # define YYSTYPE_IS_DECLARED 1 @@ -1501,7 +1492,7 @@ b4_pure_if([], [extern YYSTYPE b4_prefix[]lval;]) b4_location_if( -[#if ! defined (YYLTYPE) && ! defined (YYLTYPE_IS_DECLARED) +[#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED typedef struct YYLTYPE { int first_line;