X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/3eb4f1a3e62807125a815dc572da9204b5b51865..c21e515e05224b7898e8603f2b4142df42f138a7:/data/yacc.c?ds=sidebyside diff --git a/data/yacc.c b/data/yacc.c index c279ec3f..88277a91 100644 --- a/data/yacc.c +++ b/data/yacc.c @@ -1,11 +1,11 @@ -*- C -*- # Yacc compatible skeleton for Bison -# Copyright (C) 1984, 1989-1990, 2000-2012 Free Software Foundation, +# Copyright (C) 1984, 1989-1990, 2000-2013 Free Software Foundation, # Inc. m4_pushdef([b4_copyright_years], - [1984, 1989-1990, 2000-2012]) + [1984, 1989-1990, 2000-2013]) # 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 @@ -67,35 +67,38 @@ m4_define_default([b4_stack_depth_init], [200]) ## ------------------------ ## b4_percent_define_default([[api.pure]], [[false]]) -b4_define_flag_if([pure]) -m4_define([b4_pure_flag], - [b4_percent_define_flag_if([[api.pure]], [[1]], [[0]])]) - -# b4_yacc_pure_if(IF-TRUE, IF-FALSE) -# ---------------------------------- -# 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])]) - +b4_percent_define_check_values([[[[api.pure]], + [[false]], [[true]], [[]], [[full]]]]) + +m4_define([b4_pure_flag], [[0]]) +m4_case(b4_percent_define_get([[api.pure]]), + [false], [m4_define([b4_pure_flag], [[0]])], + [true], [m4_define([b4_pure_flag], [[1]])], + [], [m4_define([b4_pure_flag], [[1]])], + [full], [m4_define([b4_pure_flag], [[2]])]) + +m4_define([b4_pure_if], +[m4_case(b4_pure_flag, + [0], [$2], + [1], [$1], + [2], [$1])]) + [m4_fatal([invalid api.pure value: ]$1)])]) + +# b4_yyerror_arg_loc_if(ARG) +# -------------------------- +# Expand ARG iff yyerror is to be given a location as argument. +m4_define([b4_yyerror_arg_loc_if], +[b4_locations_if([m4_case(b4_pure_flag, + [1], [m4_ifset([b4_parse_param], [$1])], + [2], [$1])])]) # b4_yyerror_args # --------------- # Arguments passed to yyerror: user args plus yylloc. m4_define([b4_yyerror_args], -[b4_yacc_pure_if([b4_locations_if([&yylloc, ])])dnl -m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])]) - +[b4_yyerror_arg_loc_if([&yylloc, ])dnl +m4_ifset([b4_parse_param], [b4_args(b4_parse_param), ])]) -# b4_lex_param -# ------------ -# 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_locations_if([, [[YYLTYPE *], [&yylloc]]])m4_ifdef([b4_lex_param], [, ])])dnl -m4_ifdef([b4_lex_param], b4_lex_param))) ## ------------ ## @@ -172,11 +175,36 @@ m4_define([b4_declare_scanner_communication_variables], [[ /* The lookahead symbol. */ int yychar; +]b4_pure_if([[ +#if defined __GNUC__ && 407 <= __GNUC__ * 100 + __GNUC_MINOR__ +/* Suppress an incorrect diagnostic about yylval being uninitialized. */ +# define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN \ + _Pragma ("GCC diagnostic push") \ + _Pragma ("GCC diagnostic ignored \"-Wuninitialized\"")\ + _Pragma ("GCC diagnostic ignored \"-Wmaybe-uninitialized\"") +# define YY_IGNORE_MAYBE_UNINITIALIZED_END \ + _Pragma ("GCC diagnostic pop") +#else +/* Default value used for initialization, for pacifying older GCCs + or non-GCC compilers. */ +static YYSTYPE yyval_default; +# define YY_INITIAL_VALUE(Value) = Value +#endif]b4_locations_if([[ +static YYLTYPE yyloc_default][]b4_yyloc_default[;]])])[ +#ifndef YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN +# define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN +# define YY_IGNORE_MAYBE_UNINITIALIZED_END +#endif +#ifndef YY_INITIAL_VALUE +# define YY_INITIAL_VALUE(Value) /* Nothing. */ +#endif + /* The semantic value of the lookahead symbol. */ -YYSTYPE yylval;]b4_locations_if([[ +YYSTYPE yylval YY_INITIAL_VALUE(yyval_default);]b4_locations_if([[ /* Location data for the lookahead symbol. */ -YYLTYPE yylloc;]])b4_pure_if([], [[ +YYLTYPE yylloc]b4_pure_if([ = yyloc_default], [b4_yyloc_default])[; +]])b4_pure_if([], [[ /* Number of syntax errors so far. */ int yynerrs;]])]) @@ -239,19 +267,19 @@ enum { YYPUSH_MORE = 4 }; typedef struct ]b4_prefix[pstate ]b4_prefix[pstate; -]b4_pull_if([b4_c_function_decl([b4_prefix[parse]], [[int]], b4_parse_param) -])b4_c_function_decl([b4_prefix[push_parse]], [[int]], +]b4_pull_if([b4_function_declare([b4_prefix[parse]], [[int]], b4_parse_param) +])b4_function_declare([b4_prefix[push_parse]], [[int]], [[b4_prefix[pstate *ps]], [[ps]]]b4_pure_if([, [[[int pushed_char]], [[pushed_char]]], [[b4_api_PREFIX[STYPE const *pushed_val]], [[pushed_val]]]b4_locations_if([, - [[b4_api_PREFIX[LTYPE const *pushed_loc]], [[pushed_loc]]]])])m4_ifset([b4_parse_param], [, + [[b4_api_PREFIX[LTYPE *pushed_loc]], [[pushed_loc]]]])])m4_ifset([b4_parse_param], [, b4_parse_param])) -b4_pull_if([b4_c_function_decl([b4_prefix[pull_parse]], [[int]], +b4_pull_if([b4_function_declare([b4_prefix[pull_parse]], [[int]], [[b4_prefix[pstate *ps]], [[ps]]]m4_ifset([b4_parse_param], [, b4_parse_param]))]) -b4_c_function_decl([b4_prefix[pstate_new]], [b4_prefix[pstate *]], +b4_function_declare([b4_prefix[pstate_new]], [b4_prefix[pstate *]], [[[void]], []]) -b4_c_function_decl([b4_prefix[pstate_delete]], [[void]], +b4_function_declare([b4_prefix[pstate_delete]], [[void]], [[b4_prefix[pstate *ps]], [[ps]]])dnl ]) @@ -259,13 +287,7 @@ b4_c_function_decl([b4_prefix[pstate_delete]], [[void]], # ------------------- # When not the push parser. m4_define([b4_declare_yyparse_], -[[#ifdef YYPARSE_PARAM -]b4_c_function_decl(b4_prefix[parse], [int], - [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[ -#else /* ! YYPARSE_PARAM */ -]b4_c_function_decl(b4_prefix[parse], [int], b4_parse_param)[ -#endif /* ! YYPARSE_PARAM */]dnl -]) +[b4_function_declare(b4_prefix[parse], [int], b4_parse_param)]) # b4_declare_yyparse @@ -284,7 +306,7 @@ m4_define([b4_shared_declarations], [b4_cpp_guard_open([b4_spec_defines_file])[ ]b4_declare_yydebug[ ]b4_percent_code_get([[requires]])[ -]b4_token_enums_defines(b4_tokens)[ +]b4_token_enums_defines[ ]b4_declare_yylstype[ ]b4_declare_yyparse[ ]b4_percent_code_get([[provides]])[ @@ -295,10 +317,7 @@ m4_define([b4_shared_declarations], ## Output files. ## ## -------------- ## -# We do want M4 expansion after # for CPP macros. -m4_changecom() -m4_divert_push(0)dnl -@output(b4_parser_file_name@)@ +b4_output_begin([b4_parser_file_name]) b4_copyright([Bison implementation for Yacc-like parsers in C])[ /* C LALR(1) parser skeleton written by Richard Stallman, by @@ -327,11 +346,12 @@ m4_if(b4_api_prefix, [yy], [], #define yypstate ]b4_prefix[pstate]])[ #define yylex ]b4_prefix[lex #define yyerror ]b4_prefix[error -#define yylval ]b4_prefix[lval -#define yychar ]b4_prefix[char #define yydebug ]b4_prefix[debug -#define yynerrs ]b4_prefix[nerrs]b4_locations_if([[ -#define yylloc ]b4_prefix[lloc]])])[ +#define yynerrs ]b4_prefix[nerrs +]]b4_pure_if([], [[ +#define yylval ]b4_prefix[lval +#define yychar ]b4_prefix[char]b4_locations_if([[ +#define yylloc ]b4_prefix[lloc]])]))[ /* Copy the first part of user declarations. */ ]b4_user_pre_prologue[ @@ -346,9 +366,11 @@ m4_if(b4_api_prefix, [yy], [], # define YYERROR_VERBOSE ]b4_error_verbose_if([1], [0])[ #endif -/* In a future release of Bison, this section will be replaced +]m4_ifval(m4_quote(b4_spec_defines_file), +[[/* In a future release of Bison, this section will be replaced by #include "@basename(]b4_spec_defines_file[@)". */ -]b4_shared_declarations[ +]])dnl +b4_shared_declarations[ /* Copy the second part of user declarations. */ ]b4_user_post_prologue @@ -366,10 +388,8 @@ typedef unsigned char yytype_uint8; #ifdef YYTYPE_INT8 typedef YYTYPE_INT8 yytype_int8; -#elif ]b4_c_modern[ -typedef signed char yytype_int8; #else -typedef short int yytype_int8; +typedef signed char yytype_int8; #endif #ifdef YYTYPE_UINT16 @@ -389,7 +409,7 @@ typedef short int yytype_int16; # define YYSIZE_T __SIZE_TYPE__ # elif defined size_t # define YYSIZE_T size_t -# elif ! defined YYSIZE_T && ]b4_c_modern[ +# elif ! defined YYSIZE_T # include /* INFRINGES ON USER NAME SPACE */ # define YYSIZE_T size_t # else @@ -403,29 +423,19 @@ typedef short int yytype_int16; # if defined YYENABLE_NLS && YYENABLE_NLS # if ENABLE_NLS # include /* INFRINGES ON USER NAME SPACE */ -# define YY_(msgid) dgettext ("bison-runtime", msgid) +# define YY_(Msgid) dgettext ("bison-runtime", Msgid) # endif # endif # ifndef YY_ -# define YY_(msgid) msgid +# define YY_(Msgid) Msgid # endif #endif /* Suppress unused-variable warnings by "using" E. */ -#if ! defined lint || defined __GNUC__ -# define YYUSE(e) ((void) (e)) +#ifdef __GNUC__ +# define YYUSE(E) ((void) (E)) #else -# define YYUSE(e) /* empty */ -#endif - -/* Identity function, used to suppress warnings about constant conditions. */ -#ifndef lint -# define YYID(n) (n) -#else -]b4_c_function_def([YYID], [static int], [[int yyi], [yyi]])[ -{ - return yyi; -} +# define YYUSE(E) /* empty */ #endif #if ]b4_lac_if([[1]], [[! defined yyoverflow || YYERROR_VERBOSE]])[ @@ -446,7 +456,7 @@ b4_push_if([], [b4_lac_if([], [[ # define alloca _alloca # else # define YYSTACK_ALLOC alloca -# if ! defined _ALLOCA_H && ! defined EXIT_SUCCESS && ]b4_c_modern[ +# if ! defined _ALLOCA_H && ! defined EXIT_SUCCESS # include /* INFRINGES ON USER NAME SPACE */ /* Use EXIT_SUCCESS as a witness for stdlib.h. */ # ifndef EXIT_SUCCESS @@ -459,7 +469,7 @@ b4_push_if([], [b4_lac_if([], [[ # ifdef YYSTACK_ALLOC /* Pacify GCC's `empty if-body' warning. */ -# define YYSTACK_FREE(Ptr) do { /* empty */; } while (YYID (0)) +# define YYSTACK_FREE(Ptr) do { /* empty */; } while (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 @@ -483,13 +493,13 @@ b4_push_if([], [b4_lac_if([], [[ # endif # ifndef YYMALLOC # define YYMALLOC malloc -# if ! defined malloc && ! defined EXIT_SUCCESS && ]b4_c_modern[ +# if ! defined malloc && ! defined EXIT_SUCCESS void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */ # endif # endif # ifndef YYFREE # define YYFREE free -# if ! defined free && ! defined EXIT_SUCCESS && ]b4_c_modern[ +# if ! defined free && ! defined EXIT_SUCCESS void free (void *); /* INFRINGES ON USER NAME SPACE */ # endif # endif @@ -540,7 +550,7 @@ union yyalloc yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \ yyptr += yynewbytes / sizeof (*yyptr); \ } \ - while (YYID (0)) + while (0) #endif @@ -559,7 +569,7 @@ union yyalloc for (yyi = 0; yyi < (Count); yyi++) \ (Dst)[yyi] = (Src)[yyi]; \ } \ - while (YYID (0)) + while (0) # endif # endif #endif /* !YYCOPY_NEEDED */ @@ -595,7 +605,7 @@ static const ]b4_int_type_for([b4_translate])[ yytranslate[] = #if ]b4_api_PREFIX[DEBUG ]b4_integral_parser_table_define([rline], [b4_rline], - [YYRLINE[YYN] -- Source line where rule number YYN was defined.])[ + [[YYRLINE[YYN] -- Source line where rule number YYN was defined.]])[ #endif #if ]b4_api_PREFIX[DEBUG || YYERROR_VERBOSE || ]b4_token_table_flag[ @@ -618,13 +628,13 @@ static const ]b4_int_type_for([b4_toknum])[ yytoknum[] = #define YYPACT_NINF ]b4_pact_ninf[ -#define yypact_value_is_default(yystate) \ - ]b4_table_value_equals([[pact]], [[yystate]], [b4_pact_ninf])[ +#define yypact_value_is_default(Yystate) \ + ]b4_table_value_equals([[pact]], [[Yystate]], [b4_pact_ninf])[ #define YYTABLE_NINF ]b4_table_ninf[ -#define yytable_value_is_error(yytable_value) \ - ]b4_table_value_equals([[table]], [[yytable_value]], [b4_table_ninf])[ +#define yytable_value_is_error(Yytable_value) \ + ]b4_table_value_equals([[table]], [[Yytable_value]], [b4_table_ninf])[ ]b4_parser_tables_define[ @@ -638,21 +648,6 @@ static const ]b4_int_type_for([b4_toknum])[ yytoknum[] = #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. - Once GCC version 2 has supplanted version 1, this can go. However, - YYFAIL appears to be in use. Nevertheless, it is formally deprecated - in Bison 2.4.2's NEWS entry, where a plan to phase it out is - discussed. */ - -#define YYFAIL goto yyerrlab -#if defined YYFAIL - /* This is here to suppress warnings from the GCC cpp's - -Wunused-macros. Normally we don't worry about that warning, but - some users do, and we want to make it easy for users to remove - YYFAIL uses, which will produce warnings from Bison 2.5. */ -#endif - #define YYRECOVERING() (!!yyerrstatus) #define YYBACKUP(Token, Value) \ @@ -671,46 +666,16 @@ do \ yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \ YYERROR; \ } \ -while (YYID (0)) - +while (0) +/* Error token number */ #define YYTERROR 1 #define YYERRCODE 256 ]b4_locations_if([[ ]b4_yylloc_default_define[ #define YYRHSLOC(Rhs, K) ((Rhs)[K]) - -/* 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 defined ]b4_api_PREFIX[LTYPE_IS_TRIVIAL && ]b4_api_PREFIX[LTYPE_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]], [[ - - -/* This macro is provided for backward compatibility. */ - -#ifndef YY_LOCATION_PRINT -# define YY_LOCATION_PRINT(File, Loc) ((void) 0) -#endif]])[ - - -/* YYLEX -- calling `yylex' with the right arguments. */ - -#ifdef YYLEX_PARAM -# define YYLEX yylex (]b4_pure_if([&yylval[]b4_locations_if([, &yylloc]), ])[YYLEX_PARAM) -#else -# define YYLEX ]b4_c_function_call([yylex], [int], b4_lex_param)[ -#endif +]])[ /* Enable debugging if requested. */ #if ]b4_api_PREFIX[DEBUG @@ -724,7 +689,9 @@ while (YYID (0)) do { \ if (yydebug) \ YYFPRINTF Args; \ -} while (YYID (0)) +} while (0) + +]b4_yy_location_print_define[ # define YY_SYMBOL_PRINT(Title, Type, Value, Location) \ do { \ @@ -735,16 +702,16 @@ do { \ Type, Value]b4_locations_if([, Location])[]b4_user_args[); \ YYFPRINTF (stderr, "\n"); \ } \ -} while (YYID (0)) +} while (0) -]b4_yy_symbol_print_generate([b4_c_function_def])[ +]b4_yy_symbol_print_define[ /*------------------------------------------------------------------. | yy_stack_print -- Print the state stack from its BOTTOM up to its | | TOP (included). | `------------------------------------------------------------------*/ -]b4_c_function_def([yy_stack_print], [static void], +]b4_function_define([yy_stack_print], [static void], [[yytype_int16 *yybottom], [yybottom]], [[yytype_int16 *yytop], [yytop]])[ { @@ -761,14 +728,14 @@ do { \ do { \ if (yydebug) \ yy_stack_print ((Bottom), (Top)); \ -} while (YYID (0)) +} while (0) /*------------------------------------------------. | Report that the YYRULE is going to be reduced. | `------------------------------------------------*/ -]b4_c_function_def([yy_reduce_print], [static void], +]b4_function_define([yy_reduce_print], [static void], [[yytype_int16 *yyssp], [yyssp]], [[YYSTYPE *yyvsp], [yyvsp]], b4_locations_if([[[YYLTYPE *yylsp], [yylsp]], @@ -797,7 +764,7 @@ do { \ do { \ if (yydebug) \ yy_reduce_print (yyssp, yyvsp, ]b4_locations_if([yylsp, ])[Rule]b4_user_args[); \ -} while (YYID (0)) +} while (0) /* Nonzero means print parse trace. It is left uninitialized so that multiple parsers can coexist. */ @@ -931,7 +898,7 @@ do { \ goto yyerrlab; \ } \ } \ -} while (YYID (0)) +} while (0) /* Discard any previous initial lookahead context because of Event, which may be a lookahead change or an invalidation of the currently @@ -954,7 +921,7 @@ do { \ Event "\n"); \ yy_lac_established = 0; \ } \ -} while (YYID (0)) +} while (0) #else # define YY_LAC_DISCARD(Event) yy_lac_established = 0 #endif @@ -1070,7 +1037,7 @@ yy_lac (yytype_int16 *yyesa, yytype_int16 **yyes, # define yystrlen strlen # else /* Return the length of YYSTR. */ -]b4_c_function_def([yystrlen], [static YYSIZE_T], +]b4_function_define([yystrlen], [static YYSIZE_T], [[const char *yystr], [yystr]])[ { YYSIZE_T yylen; @@ -1087,7 +1054,7 @@ yy_lac (yytype_int16 *yyesa, yytype_int16 **yyes, # else /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in YYDEST. */ -]b4_c_function_def([yystpcpy], [static char *], +]b4_function_define([yystpcpy], [static char *], [[char *yydest], [yydest]], [[const char *yysrc], [yysrc]])[ { char *yyd = yydest; @@ -1166,7 +1133,6 @@ yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg, { YYSIZE_T yysize0 = yytnamerr (YY_NULL, yytname[yytoken]); YYSIZE_T yysize = yysize0; - YYSIZE_T yysize1; enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 }; /* Internationalized format string. */ const char *yyformat = YY_NULL; @@ -1177,10 +1143,6 @@ yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg, int yycount = 0; /* There are many possibilities here to consider: - - Assume YYFAIL is not used. It's too flawed to consider. See - - for details. YYERROR is fine as it does not invoke this - function. - If this state is a consistent state with a default action, then the only way this function was invoked is if the default action is an error action. In that case, don't check for expected @@ -1247,11 +1209,13 @@ yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg, break; } yyarg[yycount++] = yytname[yyx]; - yysize1 = yysize + yytnamerr (YY_NULL, yytname[yyx]); - if (! (yysize <= yysize1 - && yysize1 <= YYSTACK_ALLOC_MAXIMUM)) - return 2; - yysize = yysize1; + { + YYSIZE_T yysize1 = yysize + yytnamerr (YY_NULL, yytname[yyx]); + if (! (yysize <= yysize1 + && yysize1 <= YYSTACK_ALLOC_MAXIMUM)) + return 2; + yysize = yysize1; + } } }]b4_lac_if([[ # if ]b4_api_PREFIX[DEBUG @@ -1275,10 +1239,12 @@ yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg, # undef YYCASE_ } - yysize1 = yysize + yystrlen (yyformat); - if (! (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM)) - return 2; - yysize = yysize1; + { + YYSIZE_T yysize1 = yysize + yystrlen (yyformat); + if (! (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM)) + return 2; + yysize = yysize1; + } if (*yymsg_alloc < yysize) { @@ -1311,7 +1277,7 @@ yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg, } #endif /* YYERROR_VERBOSE */ -]b4_yydestruct_generate([b4_c_function_def])[ +]b4_yydestruct_define[ ]b4_pure_if([], [ @@ -1326,13 +1292,13 @@ struct yypstate static char yypstate_allocated = 0;]])b4_pull_if([ -b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[ +b4_function_define([[yyparse]], [[int]], b4_parse_param)[ { return yypull_parse (YY_NULL]m4_ifset([b4_parse_param], - [[, ]b4_c_args(b4_parse_param)])[); + [[, ]b4_args(b4_parse_param)])[); } -]b4_c_function_def([[yypull_parse]], [[int]], +]b4_function_define([[yypull_parse]], [[int]], [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [, b4_parse_param]))[ { @@ -1340,7 +1306,8 @@ b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[ yypstate *yyps_local;]b4_pure_if([[ int yychar; YYSTYPE yylval;]b4_locations_if([[ - YYLTYPE yylloc;]])])[ + static YYLTYPE yyloc_default][]b4_yyloc_default[; + YYLTYPE yylloc = yyloc_default;]])])[ if (yyps) yyps_local = yyps; else @@ -1355,9 +1322,9 @@ b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[ } } do { - yychar = YYLEX; + yychar = ]b4_lex[; yystatus = - yypush_parse (yyps_local]b4_pure_if([[, yychar, &yylval]b4_locations_if([[, &yylloc]])])m4_ifset([b4_parse_param], [, b4_c_args(b4_parse_param)])[); + yypush_parse (yyps_local]b4_pure_if([[, yychar, &yylval]b4_locations_if([[, &yylloc]])])m4_ifset([b4_parse_param], [, b4_args(b4_parse_param)])[); } while (yystatus == YYPUSH_MORE); if (!yyps) yypstate_delete (yyps_local); @@ -1365,7 +1332,7 @@ b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[ }]])[ /* Initialize the parser data structure. */ -]b4_c_function_def([[yypstate_new]], [[yypstate *]])[ +]b4_function_define([[yypstate_new]], [[yypstate *]])[ { yypstate *yyps;]b4_pure_if([], [[ if (yypstate_allocated) @@ -1378,7 +1345,7 @@ b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[ return yyps; } -]b4_c_function_def([[yypstate_delete]], [[void]], +]b4_function_define([[yypstate_delete]], [[void]], [[[yypstate *yyps]], [[yyps]]])[ { #ifndef yyoverflow @@ -1416,11 +1383,11 @@ b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[ | yypush_parse. | `---------------*/ -]b4_c_function_def([[yypush_parse]], [[int]], +]b4_function_define([[yypush_parse]], [[int]], [[[yypstate *yyps]], [[yyps]]]b4_pure_if([, [[[int yypushed_char]], [[yypushed_char]]], [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([, - [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [, + [[[YYLTYPE *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [, b4_parse_param]))], [[ @@ -1428,12 +1395,7 @@ b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[ | yyparse. | `----------*/ -#ifdef YYPARSE_PARAM -]b4_c_function_def([yyparse], [int], - [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[ -#else /* ! YYPARSE_PARAM */ -]b4_c_function_def([yyparse], [int], b4_parse_param)[ -#endif]])[ +]b4_function_define([yyparse], [int], b4_parse_param)])[ {]b4_pure_if([b4_declare_scanner_communication_variables ])b4_push_if([b4_pure_if([], [[ int yypushed_char = yychar; @@ -1446,7 +1408,7 @@ b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[ int yyn; int yyresult; /* Lookahead token as an internal (translated) token number. */ - int yytoken; + int yytoken = 0; /* The variables used to return semantic value and location from the action routines. */ YYSTYPE yyval;]b4_locations_if([[ @@ -1471,10 +1433,9 @@ b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[ goto yyread_pushed_token; }]])[ - yytoken = 0; - yyss = yyssa; - yyvs = yyvsa;]b4_locations_if([[ - yyls = yylsa;]])[ + yyssp = yyss = yyssa; + yyvsp = yyvs = yyvsa;]b4_locations_if([[ + yylsp = yyls = yylsa;]])[ yystacksize = YYINITDEPTH;]b4_lac_if([[ yyes = yyesa; @@ -1488,32 +1449,17 @@ b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[ yyerrstatus = 0; yynerrs = 0; yychar = YYEMPTY; /* Cause a token to be read. */ - - /* Initialize stack pointers. - Waste one element of value and location stack - so that they stay on the same level as the state stack. - The wasted elements are never initialized. */ - yyssp = yyss; - yyvsp = yyvs;]b4_locations_if([[ - yylsp = yyls; - -#if defined ]b4_api_PREFIX[LTYPE_IS_TRIVIAL && ]b4_api_PREFIX[LTYPE_IS_TRIVIAL - /* Initialize the default location before parsing starts. */ - yylloc.first_line = yylloc.last_line = ]b4_location_initial_line[; - yylloc.first_column = yylloc.last_column = ]b4_location_initial_column[; -#endif]]) -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 +]m4_ifdef([b4_initial_action], [ +b4_dollar_pushdef([m4_define([b4_dollar_dollar_used])yylval], [], + [b4_push_if([b4_pure_if([*])yypushed_loc], [yylloc])])dnl /* User initialization code. */ b4_user_initial_action -m4_popdef([b4_dollar_dollar])dnl -m4_popdef([b4_at_dollar])])dnl +b4_dollar_popdef[]dnl m4_ifdef([b4_dollar_dollar_used],[[ yyvsp[0] = yylval; +]])])dnl +b4_locations_if([[ yylsp[0] = ]b4_push_if([b4_pure_if([*])yypushed_loc], [yylloc])[; ]])dnl -m4_ifdef([b4_at_dollar_used], [[ yylsp[0] = yylloc; -]])[ - goto yysetstate; +[ goto yysetstate; /*------------------------------------------------------------. | yynewstate -- Push a new state, which is found in yystate. | @@ -1637,7 +1583,7 @@ yyread_pushed_token:]])[ yylval = *yypushed_val;]b4_locations_if([[ if (yypushed_loc) yylloc = *yypushed_loc;]])])], [[ - yychar = YYLEX;]])[ + yychar = ]b4_lex[;]])[ } if (yychar <= YYEOF) @@ -1683,7 +1629,9 @@ yyread_pushed_token:]])[ YY_LAC_DISCARD ("shift");]])[ yystate = yyn; + YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN *++yyvsp = yylval; + YY_IGNORE_MAYBE_UNINITIALIZED_END ]b4_locations_if([ *++yylsp = yylloc;])[ goto yynewstate; @@ -1769,9 +1717,9 @@ yyreduce: goto yynewstate; -/*------------------------------------. -| yyerrlab -- here on detecting error | -`------------------------------------*/ +/*--------------------------------------. +| yyerrlab -- here on detecting error. | +`--------------------------------------*/ yyerrlab: /* Make sure we have latest lookahead translation. See comments at user semantic actions for why this is necessary. */ @@ -1858,7 +1806,7 @@ yyerrorlab: goto yyerrorlab; ]b4_locations_if([[ yyerror_range[1] = yylsp[1-yylen]; -]])[ /* Do not reclaim the symbols of the rule which action triggered +]])[ /* Do not reclaim the symbols of the rule whose action triggered this YYERROR. */ YYPOPSTACK (yylen); yylen = 0; @@ -1903,7 +1851,9 @@ yyerrlab1: current lookahead token, the shift below will for sure. */ YY_LAC_DISCARD ("error recovery");]])[ + YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN *++yyvsp = yylval; + YY_IGNORE_MAYBE_UNINITIALIZED_END ]b4_locations_if([[ yyerror_range[2] = yylloc; /* Using YYLLOC is tempting, but would change the location of @@ -1951,7 +1901,7 @@ yyreturn: yydestruct ("Cleanup: discarding lookahead", yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[); } - /* Do not reclaim the symbols of the rule which action triggered + /* Do not reclaim the symbols of the rule whose action triggered this YYABORT or YYACCEPT. */ YYPOPSTACK (yylen); YY_STACK_PRINT (yyss, yyssp); @@ -1974,16 +1924,15 @@ yypushreturn:]])[ if (yymsg != yymsgbuf) YYSTACK_FREE (yymsg); #endif - /* Make sure YYID is used. */ - return YYID (yyresult); + return yyresult; } - ]b4_epilogue[]dnl +b4_output_end() + b4_defines_if( -[@output(b4_spec_defines_file@)@ -b4_copyright([Bison interface for Yacc-like parsers in C])[ +[b4_output_begin([b4_spec_defines_file])[ +]b4_copyright([Bison interface for Yacc-like parsers in C])[ ]b4_shared_declarations[ -]])dnl b4_defines_if -m4_divert_pop(0) -m4_popdef([b4_copyright_years]) +]b4_output_end() +])# b4_defines_if