X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/6e649e659ebc2d8b54fa4636986370b76c2ff988..05ac60f348b722ec6157cf57c31d8165466ec3ec:/data/yacc.c diff --git a/data/yacc.c b/data/yacc.c index 78ad3379..9a778556 100644 --- a/data/yacc.c +++ b/data/yacc.c @@ -1,8 +1,8 @@ m4_divert(-1) -*- C -*- -m4_include([c.m4]) # Yacc compatible skeleton for Bison -# Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002 + +# Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005 # Free Software Foundation, Inc. # This program is free software; you can redistribute it and/or modify @@ -30,9 +30,6 @@ m4_include([c.m4]) m4_define_default([b4_stack_depth_max], [10000]) m4_define_default([b4_stack_depth_init], [200]) -# Location type. -m4_define_default([b4_location_type], [yyltype]) - ## ------------------------ ## ## Pure/impure interfaces. ## @@ -58,12 +55,12 @@ m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])]) # b4_lex_param # ------------ -# Accumule in b4_lex_param all the yylex arguments. +# Accumulate in b4_lex_param all the yylex arguments. # b4_lex_param arrives quoted twice, but we want to keep only one level. m4_define([b4_lex_param], m4_dquote(b4_pure_if([[[[YYSTYPE *]], [[&yylval]]][]dnl -b4_location_if([, [[YYLTYPE *], [&yylloc]]])])dnl -m4_ifdef([b4_lex_param], [, ]b4_lex_param))) +b4_location_if([, [[YYLTYPE *], [&yylloc]]])m4_ifdef([b4_lex_param], [, ])])dnl +m4_ifdef([b4_lex_param], b4_lex_param))) @@ -80,8 +77,8 @@ m4_define([b4_int_type], [m4_if(b4_ints_in($@, [0], [255]), [1], [unsigned char], b4_ints_in($@, [-128], [127]), [1], [yysigned_char], - b4_ints_in($@, [0], [65535]), [1], [unsigned short], - b4_ints_in($@, [-32768], [32767]), [1], [short], + b4_ints_in($@, [0], [65535]), [1], [unsigned short int], + b4_ints_in($@, [-32768], [32767]), [1], [short int], m4_eval([0 <= $1]), [1], [unsigned int], @@ -97,7 +94,7 @@ m4_define([b4_int_type], # -------------------- # Expansion of $$. m4_define([b4_lhs_value], -[yyval[]m4_ifval([$1], [.$1])]) +[(yyval[]m4_ifval([$1], [.$1]))]) # b4_rhs_value(RULE-LENGTH, NUM, [TYPE]) @@ -105,7 +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@{m4_eval([$2 - $1])@}m4_ifval([$3], [.$3]))]) @@ -117,7 +114,7 @@ m4_define([b4_rhs_value], # ----------------- # Expansion of @$. m4_define([b4_lhs_location], -[yyloc]) +[(yyloc)]) # b4_rhs_location(RULE-LENGTH, NUM) @@ -125,7 +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@{m4_eval([$2 - $1])@})]) @@ -138,7 +135,7 @@ 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])[ + [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004])[ /* As a special exception, when this file is copied by Bison into a Bison output file, you may use that output file without restriction. @@ -157,8 +154,7 @@ b4_copyright([Skeleton parser for Yacc-like parsing with Bison], ]b4_identification m4_if(b4_prefix[], [yy], [], -[/* If NAME_PREFIX is specified substitute the variables and functions - names. */ +[/* Substitute the variable and function names. */ #define yyparse b4_prefix[]parse #define yylex b4_prefix[]lex #define yyerror b4_prefix[]error @@ -186,49 +182,55 @@ b4_location_if([#define yylloc b4_prefix[]lloc])])[ # define YYERROR_VERBOSE ]b4_error_verbose[ #endif -#ifndef YYSTYPE +#if ! defined (YYSTYPE) && ! defined (YYSTYPE_IS_DECLARED) ]m4_ifdef([b4_stype], [b4_syncline([b4_stype_line], [b4_filename]) -typedef union b4_stype yystype; -/* Line __line__ of __file__. */ +typedef union m4_bregexp(b4_stype, [^{], [YYSTYPE ])b4_stype YYSTYPE; +/* Line __line__ of yacc.c. */ b4_syncline([@oline@], [@ofile@])], -[typedef int yystype;])[ -# define YYSTYPE yystype +[typedef int YYSTYPE;])[ +# define yystype YYSTYPE /* obsolescent; will be withdrawn */ +# define YYSTYPE_IS_DECLARED 1 # define YYSTYPE_IS_TRIVIAL 1 #endif -#ifndef YYLTYPE -typedef struct yyltype +]b4_location_if([#if ! defined (YYLTYPE) && ! defined (YYLTYPE_IS_DECLARED) +typedef struct YYLTYPE { int first_line; int first_column; int last_line; int last_column; -} yyltype; -# define YYLTYPE ]b4_location_type[ +} YYLTYPE; +# define yyltype YYLTYPE /* obsolescent; will be withdrawn */ +# define YYLTYPE_IS_DECLARED 1 # define YYLTYPE_IS_TRIVIAL 1 #endif +])[ /* Copy the second part of user declarations. */ -]b4_post_prologue[ +]b4_post_prologue -/* Line __line__ of __file__. */ -]b4_syncline([@oline@], [@ofile@])[ +/* Line __line__ of yacc.c. */ +b4_syncline([@oline@], [@ofile@])[ #if ! defined (yyoverflow) || YYERROR_VERBOSE +# ifndef YYFREE +# define YYFREE free +# endif +# ifndef YYMALLOC +# define YYMALLOC malloc +# endif + /* The parser invokes alloca or malloc; define the necessary symbols. */ -# if YYSTACK_USE_ALLOCA -# define YYSTACK_ALLOC alloca -# else -# ifndef YYSTACK_USE_ALLOCA -# if defined (alloca) || defined (_ALLOCA_H) -# define YYSTACK_ALLOC alloca +# ifdef YYSTACK_USE_ALLOCA +# if YYSTACK_USE_ALLOCA +# ifdef __GNUC__ +# define YYSTACK_ALLOC __builtin_alloca # else -# ifdef __GNUC__ -# define YYSTACK_ALLOC __builtin_alloca -# endif +# define YYSTACK_ALLOC alloca # endif # endif # endif @@ -241,49 +243,50 @@ typedef struct yyltype # include /* INFRINGES ON USER NAME SPACE */ # define YYSIZE_T size_t # endif -# define YYSTACK_ALLOC malloc -# define YYSTACK_FREE free +# define YYSTACK_ALLOC YYMALLOC +# define YYSTACK_FREE YYFREE # endif #endif /* ! defined (yyoverflow) || YYERROR_VERBOSE */ #if (! defined (yyoverflow) \ && (! defined (__cplusplus) \ - || (YYLTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL))) + || (]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 { - short yyss; + short int yyss; YYSTYPE yyvs; ]b4_location_if([ YYLTYPE yyls; ])dnl [}; /* The size of the maximum gap between one aligned stack and the next. */ -# define YYSTACK_GAP_MAX (sizeof (union yyalloc) - 1) +# define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1) /* The size of an array large to enough to hold all stacks, each with N elements. */ ]b4_location_if( [# define YYSTACK_BYTES(N) \ - ((N) * (sizeof (short) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \ - + 2 * YYSTACK_GAP_MAX)], + ((N) * (sizeof (short int) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \ + + 2 * YYSTACK_GAP_MAXIMUM)], [# define YYSTACK_BYTES(N) \ - ((N) * (sizeof (short) + sizeof (YYSTYPE)) \ - + YYSTACK_GAP_MAX)])[ + ((N) * (sizeof (short int) + sizeof (YYSTYPE)) \ + + YYSTACK_GAP_MAXIMUM)])[ /* Copy COUNT objects from FROM to TO. The source and destination do not overlap. */ # ifndef YYCOPY -# if 1 < __GNUC__ +# if defined (__GNUC__) && 1 < __GNUC__ # define YYCOPY(To, From, Count) \ __builtin_memcpy (To, From, (Count) * sizeof (*(From))) # else # define YYCOPY(To, From, Count) \ do \ { \ - register YYSIZE_T yyi; \ + YYSIZE_T yyi; \ for (yyi = 0; yyi < (Count); yyi++) \ (To)[yyi] = (From)[yyi]; \ } \ @@ -302,7 +305,7 @@ union yyalloc YYSIZE_T yynewbytes; \ YYCOPY (&yyptr->Stack, Stack, yysize); \ Stack = &yyptr->Stack; \ - yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAX; \ + yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \ yyptr += yynewbytes / sizeof (*yyptr); \ } \ while (0) @@ -312,7 +315,7 @@ union yyalloc #if defined (__STDC__) || defined (__cplusplus) typedef signed char yysigned_char; #else - typedef short yysigned_char; + typedef short int yysigned_char; #endif /* YYFINAL -- State number of the termination state. */ @@ -334,114 +337,113 @@ union yyalloc #define YYMAXUTOK ]b4_user_token_number_max[ #define YYTRANSLATE(YYX) \ - ((YYX <= 0) ? YYEOF : \ - (unsigned)(YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK) + ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK) /* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX. */ static const ]b4_int_type_for([b4_translate])[ yytranslate[] = { - ]b4_translate + ]b4_translate[ }; #if YYDEBUG -/* YYPRHS[[YYN]] -- Index of the first RHS symbol of rule number YYN in +/* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in YYRHS. */ -static const b4_int_type_for([b4_prhs]) yyprhs[[]] = +static const ]b4_int_type_for([b4_prhs])[ yyprhs[] = { - b4_prhs + ]b4_prhs[ }; /* YYRHS -- A `-1'-separated list of the rules' RHS. */ -static const b4_int_type_for([b4_rhs]) yyrhs[[]] = +static const ]b4_int_type_for([b4_rhs])[ yyrhs[] = { - b4_rhs + ]b4_rhs[ }; -/* YYRLINE[[YYN]] -- source line where rule number YYN was defined. */ -static const b4_int_type_for([b4_rline]) yyrline[[]] = +/* YYRLINE[YYN] -- source line where rule number YYN was defined. */ +static const ]b4_int_type_for([b4_rline])[ yyrline[] = { - b4_rline + ]b4_rline[ }; #endif #if YYDEBUG || YYERROR_VERBOSE -/* YYTNME[[SYMBOL-NUM]] -- String name of the symbol SYMBOL-NUM. +/* YYTNME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM. First, the terminals, then, starting at YYNTOKENS, nonterminals. */ -static const char *const yytname[[]] = +static const char *const yytname[] = { - b4_tname + ]b4_tname[ }; #endif # ifdef YYPRINT -/* YYTOKNUM[[YYLEX-NUM]] -- Internal token number corresponding to +/* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to token YYLEX-NUM. */ -static const b4_int_type_for([b4_toknum]) yytoknum[[]] = +static const ]b4_int_type_for([b4_toknum])[ yytoknum[] = { - b4_toknum + ]b4_toknum[ }; # endif -/* YYR1[[YYN]] -- Symbol number of symbol that rule YYN derives. */ -static const b4_int_type_for([b4_r1]) yyr1[[]] = +/* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */ +static const ]b4_int_type_for([b4_r1])[ yyr1[] = { - b4_r1 + ]b4_r1[ }; -/* YYR2[[YYN]] -- Number of symbols composing right hand side of rule YYN. */ -static const b4_int_type_for([b4_r2]) yyr2[[]] = +/* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */ +static const ]b4_int_type_for([b4_r2])[ yyr2[] = { - b4_r2 + ]b4_r2[ }; -/* YYDEFACT[[STATE-NAME]] -- Default rule to reduce with in state +/* YYDEFACT[STATE-NAME] -- Default rule to reduce with in state STATE-NUM when YYTABLE doesn't specify something else to do. Zero means the default is an error. */ -static const b4_int_type_for([b4_defact]) yydefact[[]] = +static const ]b4_int_type_for([b4_defact])[ yydefact[] = { - b4_defact + ]b4_defact[ }; -/* YYDEFGOTO[[NTERM-NUM]]. */ -static const b4_int_type_for([b4_defgoto]) yydefgoto[[]] = +/* YYDEFGOTO[NTERM-NUM]. */ +static const ]b4_int_type_for([b4_defgoto])[ yydefgoto[] = { - b4_defgoto + ]b4_defgoto[ }; -/* YYPACT[[STATE-NUM]] -- Index in YYTABLE of the portion describing +/* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing STATE-NUM. */ -#define YYPACT_NINF b4_pact_ninf -static const b4_int_type_for([b4_pact]) yypact[[]] = +#define YYPACT_NINF ]b4_pact_ninf[ +static const ]b4_int_type_for([b4_pact])[ yypact[] = { - b4_pact + ]b4_pact[ }; -/* YYPGOTO[[NTERM-NUM]]. */ -static const b4_int_type_for([b4_pgoto]) yypgoto[[]] = +/* YYPGOTO[NTERM-NUM]. */ +static const ]b4_int_type_for([b4_pgoto])[ yypgoto[] = { - b4_pgoto + ]b4_pgoto[ }; -/* YYTABLE[[YYPACT[STATE-NUM]]]. What to do in state STATE-NUM. If +/* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If positive, shift that token. If negative, reduce the rule which number is the opposite. If zero, do what YYDEFACT says. If YYTABLE_NINF, syntax error. */ -#define YYTABLE_NINF b4_table_ninf -static const b4_int_type_for([b4_table]) yytable[[]] = +#define YYTABLE_NINF ]b4_table_ninf[ +static const ]b4_int_type_for([b4_table])[ yytable[] = { - b4_table + ]b4_table[ }; -static const b4_int_type_for([b4_check]) yycheck[[]] = +static const ]b4_int_type_for([b4_check])[ yycheck[] = { - b4_check + ]b4_check[ }; -/* YYSTOS[[STATE-NUM]] -- The (internal number of the) accessing +/* YYSTOS[STATE-NUM] -- The (internal number of the) accessing symbol of state STATE-NUM. */ -static const b4_int_type_for([b4_stos]) yystos[[]] = +static const ]b4_int_type_for([b4_stos])[ yystos[] = { - b4_stos[ + ]b4_stos[ }; #if ! defined (YYSIZE_T) && defined (__SIZE_TYPE__) @@ -461,13 +463,14 @@ static const b4_int_type_for([b4_stos]) yystos[[]] = #endif #define yyerrok (yyerrstatus = 0) -#define yyclearin (yytoken = YYEMPTY) -#define YYEMPTY -2 +#define yyclearin (yychar = YYEMPTY) +#define YYEMPTY (-2) #define YYEOF 0 #define YYACCEPT goto yyacceptlab #define YYABORT goto yyabortlab -#define YYERROR goto yyerrlab1 +#define YYERROR goto yyerrorlab + /* Like YYERROR except do call yyerror. This remains here temporarily to ease the transition to the new meaning of YYERROR, for GCC. @@ -479,7 +482,7 @@ static const b4_int_type_for([b4_stos]) yystos[[]] = #define YYBACKUP(Token, Value) \ do \ - if (yytoken == YYEMPTY && yylen == 1) \ + if (yychar == YYEMPTY && yylen == 1) \ { \ yychar = (Token); \ yylval = (Value); \ @@ -494,20 +497,53 @@ do \ } \ while (0) + #define YYTERROR 1 #define YYERRCODE 256 -/* YYLLOC_DEFAULT -- Compute the default location (before the actions - are run). */ +/* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N]. + If N is 0, then set CURRENT to the empty location which ends + the previous symbol: RHS[0] (always defined). */ + +#define YYRHSLOC(Rhs, K) ((Rhs)[K]) #ifndef YYLLOC_DEFAULT -# define YYLLOC_DEFAULT(Current, Rhs, N) \ - Current.first_line = Rhs[1].first_line; \ - Current.first_column = Rhs[1].first_column; \ - Current.last_line = Rhs[N].last_line; \ - Current.last_column = Rhs[N].last_column; +# define YYLLOC_DEFAULT(Current, Rhs, N) \ + do \ + if (N) \ + { \ + (Current).first_line = YYRHSLOC (Rhs, 1).first_line; \ + (Current).first_column = YYRHSLOC (Rhs, 1).first_column; \ + (Current).last_line = YYRHSLOC (Rhs, N).last_line; \ + (Current).last_column = YYRHSLOC (Rhs, N).last_column; \ + } \ + else \ + { \ + (Current).first_line = (Current).last_line = \ + YYRHSLOC (Rhs, 0).last_line; \ + (Current).first_column = (Current).last_column = \ + YYRHSLOC (Rhs, 0).last_column; \ + } \ + while (0) #endif + +/* YY_LOCATION_PRINT -- Print the location on the stream. + This macro was not mandated originally: define only if we know + we won't break user code: when these are the locations we know. */ + +#ifndef YY_LOCATION_PRINT +# 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) +# else +# define YY_LOCATION_PRINT(File, Loc) ((void) 0) +# endif +#endif + + /* YYLEX -- calling `yylex' with the right arguments. */ #ifdef YYLEX_PARAM @@ -529,31 +565,74 @@ do { \ if (yydebug) \ YYFPRINTF Args; \ } while (0) -# define YYDSYMPRINT(Args) \ -do { \ - if (yydebug) \ - yysymprint Args; \ -} while (0) -# define YYDSYMPRINTF(Title, Token, Value, Location) \ + +# define YY_SYMBOL_PRINT(Title, Type, Value, Location) \ do { \ if (yydebug) \ { \ YYFPRINTF (stderr, "%s ", Title); \ yysymprint (stderr, \ - Token, Value]b4_location_if([, Location])[); \ + Type, Value]b4_location_if([, Location])[); \ YYFPRINTF (stderr, "\n"); \ } \ } while (0) +/*------------------------------------------------------------------. +| yy_stack_print -- Print the state stack from its BOTTOM up to its | +| TOP (included). | +`------------------------------------------------------------------*/ + +]b4_c_function_def([yy_stack_print], [static void], + [[short int *bottom], [bottom]], + [[short int *top], [top]])[ +{ + YYFPRINTF (stderr, "Stack now"); + for (/* Nothing. */; bottom <= top; ++bottom) + YYFPRINTF (stderr, " %d", *bottom); + YYFPRINTF (stderr, "\n"); +} + +# define YY_STACK_PRINT(Bottom, Top) \ +do { \ + if (yydebug) \ + yy_stack_print ((Bottom), (Top)); \ +} while (0) + + +/*------------------------------------------------. +| Report that the YYRULE is going to be reduced. | +`------------------------------------------------*/ + +]b4_c_function_def([yy_reduce_print], [static void], + [[int yyrule], [yyrule]])[ +{ + int yyi; + unsigned int yylno = yyrline[yyrule]; + YYFPRINTF (stderr, "Reducing stack by rule %d (line %u), ", + 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]]); +} + +# define YY_REDUCE_PRINT(Rule) \ +do { \ + if (yydebug) \ + yy_reduce_print (Rule); \ +} while (0) + /* Nonzero means print parse trace. It is left uninitialized so that multiple parsers can coexist. */ int yydebug; #else /* !YYDEBUG */ # define YYDPRINTF(Args) -# define YYDSYMPRINT(Args) -# define YYDSYMPRINTF(Title, Token, Value, Location) +# define YY_SYMBOL_PRINT(Title, Type, Value, Location) +# define YY_STACK_PRINT(Bottom, Top) +# define YY_REDUCE_PRINT(Rule) #endif /* !YYDEBUG */ + /* YYINITDEPTH -- initial size of the parser's stacks. */ #ifndef YYINITDEPTH # define YYINITDEPTH ]b4_stack_depth_init[ @@ -566,10 +645,6 @@ int yydebug; SIZE_MAX < YYSTACK_BYTES (YYMAXDEPTH) evaluated with infinite-precision integer arithmetic. */ -#if YYMAXDEPTH == 0 -# undef YYMAXDEPTH -#endif - #ifndef YYMAXDEPTH # define YYMAXDEPTH ]b4_stack_depth_max[ #endif @@ -591,7 +666,7 @@ yystrlen (yystr) const char *yystr; # endif { - register const char *yys = yystr; + const char *yys = yystr; while (*yys++ != '\0') continue; @@ -616,8 +691,8 @@ yystpcpy (yydest, yysrc) const char *yysrc; # endif { - register char *yyd = yydest; - register const char *yys = yysrc; + char *yyd = yydest; + const char *yys = yysrc; while ((*yyd++ = *yys++) != '\0') continue; @@ -633,7 +708,7 @@ yystpcpy (yydest, yysrc) #if YYDEBUG ]b4_yysymprint_generate([b4_c_function_def])[ -#endif /* YYDEBUG. */ +#endif /* ! YYDEBUG */ ]b4_yydestruct_generate([b4_c_function_def]) @@ -647,7 +722,7 @@ int yyparse (); # endif #else /* ! YYPARSE_PARAM */ b4_c_function_decl([yyparse], [int], b4_parse_param) -#endif +#endif /* ! YYPARSE_PARAM */ m4_divert_push([KILL])# ======================== M4 code. @@ -656,15 +731,15 @@ m4_divert_push([KILL])# ======================== M4 code. # Declare the variables that are global, or local to YYPARSE if # pure-parser. m4_define([b4_declare_parser_variables], -[/* The lookahead symbol. */ +[/* The look-ahead symbol. */ int yychar; -/* The semantic value of the lookahead symbol. */ +/* The semantic value of the look-ahead symbol. */ YYSTYPE yylval; /* Number of syntax errors so far. */ int yynerrs;b4_location_if([ -/* Location data for the lookahead symbol. */ +/* Location data for the look-ahead symbol. */ YYLTYPE yylloc;]) ]) m4_divert_pop([KILL])dnl# ====================== End of M4 code. @@ -689,12 +764,12 @@ b4_c_function_def([yyparse], [int], b4_parse_param) #endif {[ ]b4_pure_if([b4_declare_parser_variables])[ - register int yystate; - register int yyn; + int yystate; + int yyn; int yyresult; /* Number of tokens to shift before error messages enabled. */ int yyerrstatus; - /* Lookahead token as an internal (translated) token number. */ + /* Look-ahead token as an internal (translated) token number. */ int yytoken = 0; /* Three stacks and their tools: @@ -706,20 +781,22 @@ b4_c_function_def([yyparse], [int], b4_parse_param) to reallocate them elsewhere. */ /* The state stack. */ - short yyssa[YYINITDEPTH]; - short *yyss = yyssa; - register short *yyssp; + short int yyssa[YYINITDEPTH]; + short int *yyss = yyssa; + short int *yyssp; /* The semantic value stack. */ YYSTYPE yyvsa[YYINITDEPTH]; YYSTYPE *yyvs = yyvsa; - register YYSTYPE *yyvsp; + YYSTYPE *yyvsp; ]b4_location_if( [[ /* The location stack. */ YYLTYPE yylsa[YYINITDEPTH]; YYLTYPE *yyls = yylsa; - YYLTYPE *yylsp;]])[ + YYLTYPE *yylsp; + /* The locations where the error started and ended. */ + YYLTYPE yyerror_range[2];]])[ #define YYPOPSTACK (yyvsp--, yyssp--]b4_location_if([, yylsp--])[) @@ -739,7 +816,7 @@ b4_c_function_def([yyparse], [int], b4_parse_param) yystate = 0; yyerrstatus = 0; yynerrs = 0; - yychar = yytoken = YYEMPTY; /* Cause a token to be read. */ + yychar = YYEMPTY; /* Cause a token to be read. */ /* Initialize stack pointers. Waste one element of value and location stack @@ -748,8 +825,27 @@ b4_c_function_def([yyparse], [int], b4_parse_param) yyssp = yyss; yyvsp = yyvs; -]b4_location_if([ yylsp = yyls;])[ - goto yysetstate; +]b4_location_if([[ yylsp = yyls; +#if YYLTYPE_IS_TRIVIAL + /* Initialize the default location before parsing starts. */ + yylloc.first_line = yylloc.last_line = 1; + yylloc.first_column = yylloc.last_column = 0; +#endif +]]) +m4_ifdef([b4_initial_action], [ +m4_pushdef([b4_at_dollar], [yylloc])dnl +m4_pushdef([b4_dollar_dollar], [yylval])dnl + /* User initialization code. */ + b4_initial_action +m4_popdef([b4_dollar_dollar])dnl +m4_popdef([b4_at_dollar])dnl +/* Line __line__ of yacc.c. */ +b4_syncline([@oline@], [@ofile@])])dnl +[ + yyvsp[0] = yylval; +]b4_location_if([[ yylsp[0] = yylloc; +]]) +[ goto yysetstate; /*------------------------------------------------------------. | yynewstate -- Push a new state, which is found in yystate. | @@ -774,7 +870,7 @@ b4_c_function_def([yyparse], [int], b4_parse_param) these so that the &'s don't force the real ones into memory. */ YYSTYPE *yyvs1 = yyvs; - short *yyss1 = yyss; + short int *yyss1 = yyss; ]b4_location_if([ YYLTYPE *yyls1 = yyls;])[ /* Each stack pointer address is followed by the size of the @@ -802,7 +898,7 @@ b4_c_function_def([yyparse], [int], b4_parse_param) yystacksize = YYMAXDEPTH; { - short *yyss1 = yyss; + short int *yyss1 = yyss; union yyalloc *yyptr = (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize)); if (! yyptr) @@ -838,34 +934,33 @@ b4_c_function_def([yyparse], [int], b4_parse_param) yybackup: /* Do appropriate processing given the current state. */ -/* Read a lookahead token if we need one and don't already have one. */ +/* Read a look-ahead token if we need one and don't already have one. */ /* yyresume: */ - /* First try to decide what to do without reference to lookahead token. */ + /* First try to decide what to do without reference to look-ahead token. */ yyn = yypact[yystate]; if (yyn == YYPACT_NINF) goto yydefault; - /* Not known => get a lookahead token if don't already have one. */ + /* Not known => get a look-ahead token if don't already have one. */ - /* YYTOKEN is either YYEMPTY or YYEOF or a valid token. */ - if (yytoken == YYEMPTY) + /* YYCHAR is either YYEMPTY or YYEOF or a valid look-ahead symbol. */ + if (yychar == YYEMPTY) { YYDPRINTF ((stderr, "Reading a token: ")); yychar = YYLEX; - yytoken = YYTRANSLATE (yychar); } - if (yytoken == YYEOF) + if (yychar <= YYEOF) { + yychar = yytoken = YYEOF; YYDPRINTF ((stderr, "Now at end of input.\n")); } else { - /* We have to keep this `#if YYDEBUG', since we use variables - which are defined only if `YYDEBUG' is set. */ - YYDSYMPRINTF ("Next token is", yytoken, &yylval, &yylloc); + yytoken = YYTRANSLATE (yychar); + YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc); } /* If the proper action on seeing token YYTOKEN is to reduce or to @@ -885,12 +980,12 @@ yybackup: if (yyn == YYFINAL) YYACCEPT; - /* Shift the lookahead token. */ - YYDPRINTF ((stderr, "Shifting token %s, ", yytname[yytoken])); + /* Shift the look-ahead token. */ + YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc); /* Discard the token being shifted unless it is eof. */ - if (yytoken != YYEOF) - yytoken = YYEMPTY; + if (yychar != YYEOF) + yychar = YYEMPTY; *++yyvsp = yylval; ]b4_location_if([ *++yylsp = yylloc;])[ @@ -932,47 +1027,23 @@ yyreduce: yyval = yyvsp[1-yylen]; ]b4_location_if( -[ /* Default location. */ - YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);])[ - -#if YYDEBUG - /* We have to keep this `#if YYDEBUG', since we use variables which - are defined only if `YYDEBUG' is set. */ - if (yydebug) - { - int yyi; - - YYFPRINTF (stderr, "Reducing by rule %d (line %d), ", - yyn - 1, yyrline[yyn]); - - /* Print the symbols being reduced, and their result. */ - for (yyi = yyprhs[yyn]; 0 <= yyrhs[yyi]; yyi++) - YYFPRINTF (stderr, "%s ", yytname[yyrhs[yyi]]); - YYFPRINTF (stderr, "-> %s\n", yytname[yyr1[yyn]]); - } -#endif +[[ /* Default location. */ + YYLLOC_DEFAULT (yyloc, yylsp - yylen, yylen);]])[ + YY_REDUCE_PRINT (yyn); switch (yyn) ]{ b4_actions + default: break; } -/* Line __line__ of __file__. */ +/* Line __line__ of yacc.c. */ b4_syncline([@oline@], [@ofile@]) [ yyvsp -= yylen; yyssp -= yylen; ]b4_location_if([ yylsp -= yylen;])[ -#if YYDEBUG - if (yydebug) - { - short *yyssp1 = yyss - 1; - YYFPRINTF (stderr, "state stack now"); - while (yyssp1 != yyssp) - YYFPRINTF (stderr, " %d", *++yyssp1); - YYFPRINTF (stderr, "\n"); - } -#endif + YY_STACK_PRINT (yyss, yyssp); *++yyvsp = yyval; ]b4_location_if([ *++yylsp = yyloc;])[ @@ -1007,18 +1078,33 @@ yyerrlab: { YYSIZE_T yysize = 0; int yytype = YYTRANSLATE (yychar); + const char* yyprefix; char *yymsg; - int yyx, yycount; + int yyx; - yycount = 0; /* Start YYX at -YYN if negative to avoid negative indexes in YYCHECK. */ - for (yyx = yyn < 0 ? -yyn : 0; - yyx < (int) (sizeof (yytname) / sizeof (char *)); yyx++) + int yyxbegin = yyn < 0 ? -yyn : 0; + + /* Stay within bounds of both yycheck and yytname. */ + int yychecklim = YYLAST - yyn; + int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS; + int yycount = 0; + + yyprefix = ", expecting "; + for (yyx = yyxbegin; yyx < yyxend; ++yyx) if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR) - yysize += yystrlen (yytname[yyx]) + 15, yycount++; - yysize += yystrlen ("syntax error, unexpected ") + 1; - yysize += yystrlen (yytname[yytype]); + { + yysize += yystrlen (yyprefix) + yystrlen (yytname [yyx]); + yycount += 1; + if (yycount == 5) + { + yysize = 0; + break; + } + } + yysize += (sizeof ("syntax error, unexpected ") + + yystrlen (yytname[yytype])); yymsg = (char *) YYSTACK_ALLOC (yysize); if (yymsg != 0) { @@ -1027,16 +1113,13 @@ yyerrlab: if (yycount < 5) { - yycount = 0; - for (yyx = yyn < 0 ? -yyn : 0; - yyx < (int) (sizeof (yytname) / sizeof (char *)); - yyx++) + yyprefix = ", expecting "; + for (yyx = yyxbegin; yyx < yyxend; ++yyx) if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR) { - const char *yyq = ! yycount ? ", expecting " : " or "; - yyp = yystpcpy (yyp, yyq); + yyp = yystpcpy (yyp, yyprefix); yyp = yystpcpy (yyp, yytname[yyx]); - yycount++; + yyprefix = " or "; } } yyerror (]b4_yyerror_args[yymsg); @@ -1049,41 +1132,64 @@ yyerrlab: #endif /* YYERROR_VERBOSE */ yyerror (]b4_yyerror_args["syntax error"); } - goto yyerrlab1; +]b4_location_if([[ yyerror_range[0] = yylloc;]])[ -/*----------------------------------------------------. -| yyerrlab1 -- error raised explicitly by an action. | -`----------------------------------------------------*/ -yyerrlab1: if (yyerrstatus == 3) { - /* If just tried and failed to reuse lookahead token after an + /* If just tried and failed to reuse look-ahead token after an error, discard it. */ - /* Return failure if at end of input. */ - if (yytoken == YYEOF) + if (yychar <= YYEOF) { - /* Pop the error token. */ - YYPOPSTACK; - /* Pop the rest of the stack. */ - while (yyss < yyssp) - { - YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp, yylsp); - yydestruct (yystos[*yyssp], yyvsp]b4_location_if([, yylsp])[); - YYPOPSTACK; - } - YYABORT; + /* If at end of input, pop the error token, + then the rest of the stack, then return failure. */ + if (yychar == YYEOF) + for (;;) + { +]b4_location_if([[ yyerror_range[0] = *yylsp;]])[ + YYPOPSTACK; + if (yyssp == yyss) + YYABORT; + yydestruct ("Error: popping", + yystos[*yyssp], yyvsp]b4_location_if([, yylsp])[); + } } - - YYDSYMPRINTF ("Error: discarding", yytoken, &yylval, &yylloc); - yydestruct (yytoken, &yylval]b4_location_if([, &yylloc])[); - yytoken = YYEMPTY; + else + { + yydestruct ("Error: discarding", yytoken, &yylval]b4_location_if([, &yylloc])[); + yychar = YYEMPTY; + } } - /* Else will try to reuse lookahead token after shifting the error + /* Else will try to reuse look-ahead token after shifting the error token. */ + goto yyerrlab1; + + +/*---------------------------------------------------. +| yyerrorlab -- error raised explicitly by YYERROR. | +`---------------------------------------------------*/ +yyerrorlab: + + /* Pacify compilers like GCC when the user code never invokes + YYERROR and the label yyerrorlab therefore never appears in user + code. */ + if (0) + goto yyerrorlab; + +]b4_location_if([[ yyerror_range[0] = yylsp[1-yylen]; + yylsp -= yylen; + ]])[yyvsp -= yylen; + yyssp -= yylen; + yystate = *yyssp; + goto yyerrlab1; + +/*-------------------------------------------------------------. +| yyerrlab1 -- common code for both syntax error and YYERROR. | +`-------------------------------------------------------------*/ +yyerrlab1: yyerrstatus = 3; /* Each real token shifted decrements this. */ for (;;) @@ -1104,31 +1210,26 @@ yyerrlab1: if (yyssp == yyss) YYABORT; - YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp, yylsp); - yydestruct (yystos[yystate], yyvsp]b4_location_if([, yylsp])[); - yyvsp--; - yystate = *--yyssp; -]b4_location_if([ yylsp--;])[ - -#if YYDEBUG - if (yydebug) - { - short *yyssp1 = yyss - 1; - YYFPRINTF (stderr, "Error: state stack now"); - while (yyssp1 != yyssp) - YYFPRINTF (stderr, " %d", *++yyssp1); - YYFPRINTF (stderr, "\n"); - } -#endif +]b4_location_if([[ yyerror_range[0] = *yylsp;]])[ + yydestruct ("Error: popping", yystos[yystate], yyvsp]b4_location_if([, yylsp])[); + YYPOPSTACK; + yystate = *yyssp; + YY_STACK_PRINT (yyss, yyssp); } if (yyn == YYFINAL) YYACCEPT; - YYDPRINTF ((stderr, "Shifting error token, ")); - *++yyvsp = yylval; -]b4_location_if([ *++yylsp = yylloc;])[ +]b4_location_if([[ + yyerror_range[1] = yylloc; + /* Using YYLLOC is tempting, but would change the location of + the look-ahead. YYLOC is available though. */ + YYLLOC_DEFAULT (yyloc, yyerror_range - 1, 2); + *++yylsp = yyloc;]])[ + + /* Shift the error token. */ + YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp); yystate = yyn; goto yynewstate; @@ -1145,6 +1246,9 @@ yyacceptlab: | yyabortlab -- YYABORT comes here. | `-----------------------------------*/ yyabortlab: + yydestruct ("Error: discarding lookahead", + yytoken, &yylval]b4_location_if([, &yylloc])[); + yychar = YYEMPTY; yyresult = 1; goto yyreturn; @@ -1171,7 +1275,7 @@ 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]) + [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004]) /* As a special exception, when this file is copied by Bison into a Bison output file, you may use that output file without restriction. @@ -1180,14 +1284,15 @@ b4_copyright([Skeleton parser for Yacc-like parsing with Bison], b4_token_defines(b4_tokens) -#ifndef YYSTYPE +#if ! defined (YYSTYPE) && ! defined (YYSTYPE_IS_DECLARED) m4_ifdef([b4_stype], [b4_syncline([b4_stype_line], [b4_filename]) -typedef union b4_stype yystype; -/* Line __line__ of __file__. */ +typedef union m4_bregexp(b4_stype, [^{], [YYSTYPE ])b4_stype YYSTYPE; +/* Line __line__ of yacc.c. */ b4_syncline([@oline@], [@ofile@])], -[typedef int yystype;]) -# define YYSTYPE yystype +[typedef int YYSTYPE;]) +# define yystype YYSTYPE /* obsolescent; will be withdrawn */ +# define YYSTYPE_IS_DECLARED 1 # define YYSTYPE_IS_TRIVIAL 1 #endif @@ -1195,15 +1300,17 @@ b4_pure_if([], [extern YYSTYPE b4_prefix[]lval;]) b4_location_if( -[#ifndef YYLTYPE -typedef struct yyltype +[#if ! defined (YYLTYPE) && ! defined (YYLTYPE_IS_DECLARED) +typedef struct YYLTYPE { int first_line; int first_column; int last_line; int last_column; -} yyltype; -# define YYLTYPE yyltype +} YYLTYPE; +# define yyltype YYLTYPE /* obsolescent; will be withdrawn */ +# define YYLTYPE_IS_DECLARED 1 +# define YYLTYPE_IS_TRIVIAL 1 #endif m4_if(b4_pure, [0],