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Diffstat (limited to 'gnuwin32/bin/data/yacc.c')
| -rw-r--r-- | gnuwin32/bin/data/yacc.c | 1915 |
1 files changed, 0 insertions, 1915 deletions
diff --git a/gnuwin32/bin/data/yacc.c b/gnuwin32/bin/data/yacc.c deleted file mode 100644 index 822656b8..00000000 --- a/gnuwin32/bin/data/yacc.c +++ /dev/null @@ -1,1915 +0,0 @@ - -*- C -*- -# Yacc compatible skeleton for Bison - -# Copyright (C) 1984, 1989-1990, 2000-2013 Free Software Foundation, -# Inc. - -m4_pushdef([b4_copyright_years], - [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 -# the Free Software Foundation, either version 3 of the License, or -# (at your option) any later version. -# -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. - -# Check the value of %define api.push-pull. -b4_percent_define_default([[api.push-pull]], [[pull]]) -b4_percent_define_check_values([[[[api.push-pull]], - [[pull]], [[push]], [[both]]]]) -b4_define_flag_if([pull]) m4_define([b4_pull_flag], [[1]]) -b4_define_flag_if([push]) m4_define([b4_push_flag], [[1]]) -m4_case(b4_percent_define_get([[api.push-pull]]), - [pull], [m4_define([b4_push_flag], [[0]])], - [push], [m4_define([b4_pull_flag], [[0]])]) - -# Handle BISON_USE_PUSH_FOR_PULL for the test suite. So that push parsing -# tests function as written, do not let BISON_USE_PUSH_FOR_PULL modify the -# behavior of Bison at all when push parsing is already requested. -b4_define_flag_if([use_push_for_pull]) -b4_use_push_for_pull_if([ - b4_push_if([m4_define([b4_use_push_for_pull_flag], [[0]])], - [m4_define([b4_push_flag], [[1]])])]) - -# Check the value of %define parse.lac and friends, where LAC stands for -# lookahead correction. -b4_percent_define_default([[parse.lac]], [[none]]) -b4_percent_define_default([[parse.lac.es-capacity-initial]], [[20]]) -b4_percent_define_default([[parse.lac.memory-trace]], [[failures]]) -b4_percent_define_check_values([[[[parse.lac]], [[full]], [[none]]]], - [[[[parse.lac.memory-trace]], - [[failures]], [[full]]]]) -b4_define_flag_if([lac]) -m4_define([b4_lac_flag], - [m4_if(b4_percent_define_get([[parse.lac]]), - [none], [[0]], [[1]])]) - -m4_include(b4_pkgdatadir/[c.m4]) - -## ---------------- ## -## Default values. ## -## ---------------- ## - -# Stack parameters. -m4_define_default([b4_stack_depth_max], [10000]) -m4_define_default([b4_stack_depth_init], [200]) - - -## ------------------------ ## -## Pure/impure interfaces. ## -## ------------------------ ## - -b4_percent_define_default([[api.pure]], [[false]]) -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], [$1])])]) - -# b4_yyerror_args -# --------------- -# Arguments passed to yyerror: user args plus yylloc. -m4_define([b4_yyerror_args], -[b4_yyerror_arg_loc_if([&yylloc, ])dnl -m4_ifset([b4_parse_param], [b4_args(b4_parse_param), ])]) - - - -## ------------ ## -## Data Types. ## -## ------------ ## - -# b4_int_type(MIN, MAX) -# --------------------- -# Return the smallest int type able to handle numbers ranging from -# MIN to MAX (included). Overwrite the version from c.m4, which -# uses only C89 types, so that the user can override the shorter -# types, and so that pre-C89 compilers are handled correctly. -m4_define([b4_int_type], -[m4_if(b4_ints_in($@, [0], [255]), [1], [yytype_uint8], - b4_ints_in($@, [-128], [127]), [1], [yytype_int8], - - b4_ints_in($@, [0], [65535]), [1], [yytype_uint16], - b4_ints_in($@, [-32768], [32767]), [1], [yytype_int16], - - m4_eval([0 <= $1]), [1], [unsigned int], - - [int])]) - - -## ----------------- ## -## Semantic Values. ## -## ----------------- ## - - -# b4_lhs_value([TYPE]) -# -------------------- -# Expansion of $<TYPE>$. -m4_define([b4_lhs_value], -[b4_symbol_value(yyval, [$1])]) - - -# b4_rhs_value(RULE-LENGTH, NUM, [TYPE]) -# -------------------------------------- -# Expansion of $<TYPE>NUM, where the current rule has RULE-LENGTH -# symbols on RHS. -m4_define([b4_rhs_value], - [b4_symbol_value([yyvsp@{b4_subtract([$2], [$1])@}], [$3])]) - - -## ----------- ## -## Locations. ## -## ----------- ## - -# b4_lhs_location() -# ----------------- -# Expansion of @$. -m4_define([b4_lhs_location], -[(yyloc)]) - - -# b4_rhs_location(RULE-LENGTH, NUM) -# --------------------------------- -# Expansion of @NUM, where the current rule has RULE-LENGTH symbols -# on RHS. -m4_define([b4_rhs_location], - [(yylsp@{b4_subtract([$2], [$1])@})]) - - -## -------------- ## -## Declarations. ## -## -------------- ## - -# b4_declare_scanner_communication_variables -# ------------------------------------------ -# Declare the variables that are global, or local to YYPARSE if -# pure-parser. -m4_define([b4_declare_scanner_communication_variables], [[ -/* The lookahead symbol. */ -int yychar; - -]b4_pure_if([[ -/* The semantic value of the lookahead symbol. */ -/* Default value used for initialization, for pacifying older GCCs - or non-GCC compilers. */ -YY_INITIAL_VALUE (static YYSTYPE yyval_default;) -YYSTYPE yylval YY_INITIAL_VALUE (= yyval_default);]b4_locations_if([[ - -/* Location data for the lookahead symbol. */ -static YYLTYPE yyloc_default]b4_yyloc_default[; -YYLTYPE yylloc = yyloc_default;]])], -[[/* The semantic value of the lookahead symbol. */ -YYSTYPE yylval;]b4_locations_if([[ -/* Location data for the lookahead symbol. */ -YYLTYPE yylloc]b4_yyloc_default[;]])[ -/* Number of syntax errors so far. */ -int yynerrs;]])]) - - -# b4_declare_parser_state_variables -# --------------------------------- -# Declare all the variables that are needed to maintain the parser state -# between calls to yypush_parse. -m4_define([b4_declare_parser_state_variables], [b4_pure_if([[ - /* Number of syntax errors so far. */ - int yynerrs; -]])[ - int yystate; - /* Number of tokens to shift before error messages enabled. */ - int yyerrstatus; - - /* The stacks and their tools: - 'yyss': related to states. - 'yyvs': related to semantic values.]b4_locations_if([[ - 'yyls': related to locations.]])[ - - Refer to the stacks through separate pointers, to allow yyoverflow - to reallocate them elsewhere. */ - - /* The state stack. */ - yytype_int16 yyssa[YYINITDEPTH]; - yytype_int16 *yyss; - yytype_int16 *yyssp; - - /* The semantic value stack. */ - YYSTYPE yyvsa[YYINITDEPTH]; - YYSTYPE *yyvs; - YYSTYPE *yyvsp;]b4_locations_if([[ - - /* The location stack. */ - YYLTYPE yylsa[YYINITDEPTH]; - YYLTYPE *yyls; - YYLTYPE *yylsp; - - /* The locations where the error started and ended. */ - YYLTYPE yyerror_range[3];]])[ - - YYSIZE_T yystacksize;]b4_lac_if([[ - - yytype_int16 yyesa@{]b4_percent_define_get([[parse.lac.es-capacity-initial]])[@}; - yytype_int16 *yyes; - YYSIZE_T yyes_capacity;]])]) - - -# b4_declare_yyparse_push_ -# ------------------------ -# Declaration of yyparse (and dependencies) when using the push parser -# (including in pull mode). -m4_define([b4_declare_yyparse_push_], -[[#ifndef YYPUSH_MORE_DEFINED -# define YYPUSH_MORE_DEFINED -enum { YYPUSH_MORE = 4 }; -#endif - -typedef struct ]b4_prefix[pstate ]b4_prefix[pstate; - -]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 *pushed_loc]], [[pushed_loc]]]])])m4_ifset([b4_parse_param], [, - b4_parse_param])) -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_function_declare([b4_prefix[pstate_new]], [b4_prefix[pstate *]], - [[[void]], []]) -b4_function_declare([b4_prefix[pstate_delete]], [[void]], - [[b4_prefix[pstate *ps]], [[ps]]])dnl -]) - -# b4_declare_yyparse_ -# ------------------- -# When not the push parser. -m4_define([b4_declare_yyparse_], -[b4_function_declare(b4_prefix[parse], [int], b4_parse_param)]) - - -# b4_declare_yyparse -# ------------------ -m4_define([b4_declare_yyparse], -[b4_push_if([b4_declare_yyparse_push_], - [b4_declare_yyparse_])[]dnl -]) - - -# b4_shared_declarations -# ---------------------- -# Declaration that might either go into the header (if --defines) -# or open coded in the parser body. -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_declare_yylstype[ -]b4_declare_yyparse[ -]b4_percent_code_get([[provides]])[ -]b4_cpp_guard_close([b4_spec_defines_file])[]dnl -]) - -## -------------- ## -## Output files. ## -## -------------- ## - -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 - 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 - variables, as they might otherwise be expanded by user macros. - There are some unavoidable exceptions within include files to - define necessary library symbols; they are noted "INFRINGES ON - USER NAME SPACE" below. */ - -]b4_identification -b4_percent_code_get([[top]])[]dnl -m4_if(b4_api_prefix, [yy], [], -[[/* Substitute the type names. */ -#define YYSTYPE ]b4_api_PREFIX[STYPE]b4_locations_if([[ -#define YYLTYPE ]b4_api_PREFIX[LTYPE]])])[ -]m4_if(b4_prefix, [yy], [], -[[/* Substitute the variable and function names. */]b4_pull_if([[ -#define yyparse ]b4_prefix[parse]])b4_push_if([[ -#define yypush_parse ]b4_prefix[push_parse]b4_pull_if([[ -#define yypull_parse ]b4_prefix[pull_parse]])[ -#define yypstate_new ]b4_prefix[pstate_new -#define yypstate_delete ]b4_prefix[pstate_delete -#define yypstate ]b4_prefix[pstate]])[ -#define yylex ]b4_prefix[lex -#define yyerror ]b4_prefix[error -#define yydebug ]b4_prefix[debug -#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[ - -]b4_null_define[ - -/* Enabling verbose error messages. */ -#ifdef YYERROR_VERBOSE -# undef YYERROR_VERBOSE -# define YYERROR_VERBOSE 1 -#else -# define YYERROR_VERBOSE ]b4_error_verbose_if([1], [0])[ -#endif - -]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[@)". */ -]])dnl -b4_shared_declarations[ - -/* Copy the second part of user declarations. */ -]b4_user_post_prologue -b4_percent_code_get[]dnl - -[#ifdef short -# undef short -#endif - -#ifdef YYTYPE_UINT8 -typedef YYTYPE_UINT8 yytype_uint8; -#else -typedef unsigned char yytype_uint8; -#endif - -#ifdef YYTYPE_INT8 -typedef YYTYPE_INT8 yytype_int8; -#else -typedef signed char yytype_int8; -#endif - -#ifdef YYTYPE_UINT16 -typedef YYTYPE_UINT16 yytype_uint16; -#else -typedef unsigned short int yytype_uint16; -#endif - -#ifdef YYTYPE_INT16 -typedef YYTYPE_INT16 yytype_int16; -#else -typedef short int yytype_int16; -#endif - -#ifndef YYSIZE_T -# ifdef __SIZE_TYPE__ -# define YYSIZE_T __SIZE_TYPE__ -# elif defined size_t -# define YYSIZE_T size_t -# elif ! defined YYSIZE_T -# include <stddef.h> /* INFRINGES ON USER NAME SPACE */ -# define YYSIZE_T size_t -# else -# define YYSIZE_T unsigned int -# endif -#endif - -#define YYSIZE_MAXIMUM ((YYSIZE_T) -1) - -#ifndef YY_ -# if defined YYENABLE_NLS && YYENABLE_NLS -# if ENABLE_NLS -# include <libintl.h> /* INFRINGES ON USER NAME SPACE */ -# define YY_(Msgid) dgettext ("bison-runtime", Msgid) -# endif -# endif -# ifndef YY_ -# define YY_(Msgid) Msgid -# endif -#endif - -]b4_attribute_define[ - -#if ]b4_lac_if([[1]], [[! defined yyoverflow || YYERROR_VERBOSE]])[ - -/* The parser invokes alloca or malloc; define the necessary symbols. */]dnl -b4_push_if([], [b4_lac_if([], [[ - -# ifdef YYSTACK_USE_ALLOCA -# if YYSTACK_USE_ALLOCA -# ifdef __GNUC__ -# define YYSTACK_ALLOC __builtin_alloca -# elif defined __BUILTIN_VA_ARG_INCR -# include <alloca.h> /* INFRINGES ON USER NAME SPACE */ -# elif defined _AIX -# define YYSTACK_ALLOC __alloca -# elif defined _MSC_VER -# include <malloc.h> /* INFRINGES ON USER NAME SPACE */ -# define alloca _alloca -# else -# define YYSTACK_ALLOC alloca -# if ! defined _ALLOCA_H && ! defined EXIT_SUCCESS -# include <stdlib.h> /* INFRINGES ON USER NAME SPACE */ - /* Use EXIT_SUCCESS as a witness for stdlib.h. */ -# ifndef EXIT_SUCCESS -# define EXIT_SUCCESS 0 -# endif -# endif -# endif -# endif -# endif]])])[ - -# ifdef YYSTACK_ALLOC - /* Pacify GCC's 'empty if-body' warning. */ -# 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 - 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 2006 */ -# endif -# else -# define YYSTACK_ALLOC YYMALLOC -# define YYSTACK_FREE YYFREE -# ifndef YYSTACK_ALLOC_MAXIMUM -# define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM -# endif -# if (defined __cplusplus && ! defined EXIT_SUCCESS \ - && ! ((defined YYMALLOC || defined malloc) \ - && (defined YYFREE || defined free))) -# include <stdlib.h> /* INFRINGES ON USER NAME SPACE */ -# ifndef EXIT_SUCCESS -# define EXIT_SUCCESS 0 -# endif -# endif -# ifndef YYMALLOC -# define YYMALLOC malloc -# 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 -void free (void *); /* INFRINGES ON USER NAME SPACE */ -# endif -# endif -# endif]b4_lac_if([[ -# define YYCOPY_NEEDED 1]])[ -#endif]b4_lac_if([], [[ /* ! defined yyoverflow || YYERROR_VERBOSE */]])[ - - -#if (! defined yyoverflow \ - && (! defined __cplusplus \ - || (]b4_locations_if([[defined ]b4_api_PREFIX[LTYPE_IS_TRIVIAL && ]b4_api_PREFIX[LTYPE_IS_TRIVIAL \ - && ]])[defined ]b4_api_PREFIX[STYPE_IS_TRIVIAL && ]b4_api_PREFIX[STYPE_IS_TRIVIAL))) - -/* A type that is properly aligned for any stack member. */ -union yyalloc -{ - yytype_int16 yyss_alloc; - YYSTYPE yyvs_alloc;]b4_locations_if([ - YYLTYPE yyls_alloc;])[ -}; - -/* The size of the maximum gap between one aligned stack and the next. */ -# 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_locations_if( -[# define YYSTACK_BYTES(N) \ - ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \ - + 2 * YYSTACK_GAP_MAXIMUM)], -[# define YYSTACK_BYTES(N) \ - ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \ - + YYSTACK_GAP_MAXIMUM)])[ - -# define YYCOPY_NEEDED 1 - -/* Relocate STACK from its old location to the new one. The - local variables YYSIZE and YYSTACKSIZE give the old and new number of - elements in the stack, and YYPTR gives the new location of the - stack. Advance YYPTR to a properly aligned location for the next - stack. */ -# define YYSTACK_RELOCATE(Stack_alloc, Stack) \ - do \ - { \ - YYSIZE_T yynewbytes; \ - YYCOPY (&yyptr->Stack_alloc, Stack, yysize); \ - Stack = &yyptr->Stack_alloc; \ - yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \ - yyptr += yynewbytes / sizeof (*yyptr); \ - } \ - while (0) - -#endif - -#if defined YYCOPY_NEEDED && YYCOPY_NEEDED -/* Copy COUNT objects from SRC to DST. The source and destination do - not overlap. */ -# ifndef YYCOPY -# if defined __GNUC__ && 1 < __GNUC__ -# define YYCOPY(Dst, Src, Count) \ - __builtin_memcpy (Dst, Src, (Count) * sizeof (*(Src))) -# else -# define YYCOPY(Dst, Src, Count) \ - do \ - { \ - YYSIZE_T yyi; \ - for (yyi = 0; yyi < (Count); yyi++) \ - (Dst)[yyi] = (Src)[yyi]; \ - } \ - while (0) -# endif -# endif -#endif /* !YYCOPY_NEEDED */ - -/* 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. */ -#define YYNTOKENS ]b4_tokens_number[ -/* YYNNTS -- Number of nonterminals. */ -#define YYNNTS ]b4_nterms_number[ -/* YYNRULES -- Number of rules. */ -#define YYNRULES ]b4_rules_number[ -/* YYNSTATES -- Number of states. */ -#define YYNSTATES ]b4_states_number[ - -/* YYTRANSLATE[YYX] -- Symbol number corresponding to YYX as returned - by yylex, with out-of-bounds checking. */ -#define YYUNDEFTOK ]b4_undef_token_number[ -#define YYMAXUTOK ]b4_user_token_number_max[ - -#define YYTRANSLATE(YYX) \ - ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK) - -/* YYTRANSLATE[TOKEN-NUM] -- Symbol number corresponding to TOKEN-NUM - as returned by yylex, without out-of-bounds checking. */ -static const ]b4_int_type_for([b4_translate])[ yytranslate[] = -{ - ]b4_translate[ -}; - -#if ]b4_api_PREFIX[DEBUG -]b4_integral_parser_table_define([rline], [b4_rline], - [[YYRLINE[YYN] -- Source line where rule number YYN was defined.]])[ -#endif - -#if ]b4_api_PREFIX[DEBUG || YYERROR_VERBOSE || ]b4_token_table_flag[ -/* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM. - First, the terminals, then, starting at YYNTOKENS, nonterminals. */ -static const char *const yytname[] = -{ - ]b4_tname[ -}; -#endif - -# ifdef YYPRINT -/* YYTOKNUM[NUM] -- (External) token number corresponding to the - (internal) symbol number NUM (which must be that of a token). */ -static const ]b4_int_type_for([b4_toknum])[ yytoknum[] = -{ - ]b4_toknum[ -}; -# endif - -#define YYPACT_NINF ]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])[ - -]b4_parser_tables_define[ - -#define yyerrok (yyerrstatus = 0) -#define yyclearin (yychar = YYEMPTY) -#define YYEMPTY (-2) -#define YYEOF 0 - -#define YYACCEPT goto yyacceptlab -#define YYABORT goto yyabortlab -#define YYERROR goto yyerrorlab - - -#define YYRECOVERING() (!!yyerrstatus) - -#define YYBACKUP(Token, Value) \ -do \ - if (yychar == YYEMPTY) \ - { \ - yychar = (Token); \ - yylval = (Value); \ - YYPOPSTACK (yylen); \ - yystate = *yyssp; \]b4_lac_if([[ - YY_LAC_DISCARD ("YYBACKUP"); \]])[ - goto yybackup; \ - } \ - else \ - { \ - yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \ - YYERROR; \ - } \ -while (0) - -/* Error token number */ -#define YYTERROR 1 -#define YYERRCODE 256 - -]b4_locations_if([[ -]b4_yylloc_default_define[ -#define YYRHSLOC(Rhs, K) ((Rhs)[K]) -]])[ - -/* Enable debugging if requested. */ -#if ]b4_api_PREFIX[DEBUG - -# ifndef YYFPRINTF -# include <stdio.h> /* INFRINGES ON USER NAME SPACE */ -# define YYFPRINTF fprintf -# endif - -# define YYDPRINTF(Args) \ -do { \ - if (yydebug) \ - YYFPRINTF Args; \ -} while (0) - -]b4_yy_location_print_define[ - -# define YY_SYMBOL_PRINT(Title, Type, Value, Location) \ -do { \ - if (yydebug) \ - { \ - YYFPRINTF (stderr, "%s ", Title); \ - yy_symbol_print (stderr, \ - Type, Value]b4_locations_if([, Location])[]b4_user_args[); \ - YYFPRINTF (stderr, "\n"); \ - } \ -} while (0) - -]b4_yy_symbol_print_define[ - -/*------------------------------------------------------------------. -| yy_stack_print -- Print the state stack from its BOTTOM up to its | -| TOP (included). | -`------------------------------------------------------------------*/ - -]b4_function_define([yy_stack_print], [static void], - [[yytype_int16 *yybottom], [yybottom]], - [[yytype_int16 *yytop], [yytop]])[ -{ - YYFPRINTF (stderr, "Stack now"); - for (; yybottom <= yytop; yybottom++) - { - int yybot = *yybottom; - YYFPRINTF (stderr, " %d", yybot); - } - 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_function_define([yy_reduce_print], [static void], - [[yytype_int16 *yyssp], [yyssp]], - [[YYSTYPE *yyvsp], [yyvsp]], - b4_locations_if([[[YYLTYPE *yylsp], [yylsp]], - ])[[int yyrule], [yyrule]]m4_ifset([b4_parse_param], [, - b4_parse_param]))[ -{ - unsigned long int yylno = yyrline[yyrule]; - int yynrhs = yyr2[yyrule]; - int yyi; - YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n", - yyrule - 1, yylno); - /* The symbols being reduced. */ - for (yyi = 0; yyi < yynrhs; yyi++) - { - YYFPRINTF (stderr, " $%d = ", yyi + 1); - yy_symbol_print (stderr, - yystos[yyssp[yyi + 1 - yynrhs]], - &]b4_rhs_value(yynrhs, yyi + 1)[ - ]b4_locations_if([, &]b4_rhs_location(yynrhs, yyi + 1))[]dnl - b4_user_args[); - YYFPRINTF (stderr, "\n"); - } -} - -# define YY_REDUCE_PRINT(Rule) \ -do { \ - if (yydebug) \ - yy_reduce_print (yyssp, yyvsp, ]b4_locations_if([yylsp, ])[Rule]b4_user_args[); \ -} while (0) - -/* Nonzero means print parse trace. It is left uninitialized so that - multiple parsers can coexist. */ -int yydebug; -#else /* !]b4_api_PREFIX[DEBUG */ -# define YYDPRINTF(Args) -# define YY_SYMBOL_PRINT(Title, Type, Value, Location) -# define YY_STACK_PRINT(Bottom, Top) -# define YY_REDUCE_PRINT(Rule) -#endif /* !]b4_api_PREFIX[DEBUG */ - - -/* YYINITDEPTH -- initial size of the parser's stacks. */ -#ifndef YYINITDEPTH -# define YYINITDEPTH ]b4_stack_depth_init[ -#endif - -/* YYMAXDEPTH -- maximum size the stacks can grow to (effective only - if the built-in stack extension method is used). - - Do not make this value too large; the results are undefined if - YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH) - evaluated with infinite-precision integer arithmetic. */ - -#ifndef YYMAXDEPTH -# define YYMAXDEPTH ]b4_stack_depth_max[ -#endif]b4_lac_if([[ - -/* Given a state stack such that *YYBOTTOM is its bottom, such that - *YYTOP is either its top or is YYTOP_EMPTY to indicate an empty - stack, and such that *YYCAPACITY is the maximum number of elements it - can hold without a reallocation, make sure there is enough room to - store YYADD more elements. If not, allocate a new stack using - YYSTACK_ALLOC, copy the existing elements, and adjust *YYBOTTOM, - *YYTOP, and *YYCAPACITY to reflect the new capacity and memory - location. If *YYBOTTOM != YYBOTTOM_NO_FREE, then free the old stack - using YYSTACK_FREE. Return 0 if successful or if no reallocation is - required. Return 1 if memory is exhausted. */ -static int -yy_lac_stack_realloc (YYSIZE_T *yycapacity, YYSIZE_T yyadd, -#if ]b4_api_PREFIX[DEBUG - char const *yydebug_prefix, - char const *yydebug_suffix, -#endif - yytype_int16 **yybottom, - yytype_int16 *yybottom_no_free, - yytype_int16 **yytop, yytype_int16 *yytop_empty) -{ - YYSIZE_T yysize_old = - *yytop == yytop_empty ? 0 : *yytop - *yybottom + 1; - YYSIZE_T yysize_new = yysize_old + yyadd; - if (*yycapacity < yysize_new) - { - YYSIZE_T yyalloc = 2 * yysize_new; - yytype_int16 *yybottom_new; - /* Use YYMAXDEPTH for maximum stack size given that the stack - should never need to grow larger than the main state stack - needs to grow without LAC. */ - if (YYMAXDEPTH < yysize_new) - { - YYDPRINTF ((stderr, "%smax size exceeded%s", yydebug_prefix, - yydebug_suffix)); - return 1; - } - if (YYMAXDEPTH < yyalloc) - yyalloc = YYMAXDEPTH; - yybottom_new = - (yytype_int16*) YYSTACK_ALLOC (yyalloc * sizeof *yybottom_new); - if (!yybottom_new) - { - YYDPRINTF ((stderr, "%srealloc failed%s", yydebug_prefix, - yydebug_suffix)); - return 1; - } - if (*yytop != yytop_empty) - { - YYCOPY (yybottom_new, *yybottom, yysize_old); - *yytop = yybottom_new + (yysize_old - 1); - } - if (*yybottom != yybottom_no_free) - YYSTACK_FREE (*yybottom); - *yybottom = yybottom_new; - *yycapacity = yyalloc;]m4_if(b4_percent_define_get([[parse.lac.memory-trace]]), - [full], [[ - YYDPRINTF ((stderr, "%srealloc to %lu%s", yydebug_prefix, - (unsigned long int) yyalloc, yydebug_suffix));]])[ - } - return 0; -} - -/* Establish the initial context for the current lookahead if no initial - context is currently established. - - We define a context as a snapshot of the parser stacks. We define - the initial context for a lookahead as the context in which the - parser initially examines that lookahead in order to select a - syntactic action. Thus, if the lookahead eventually proves - syntactically unacceptable (possibly in a later context reached via a - series of reductions), the initial context can be used to determine - the exact set of tokens that would be syntactically acceptable in the - lookahead's place. Moreover, it is the context after which any - further semantic actions would be erroneous because they would be - determined by a syntactically unacceptable token. - - YY_LAC_ESTABLISH should be invoked when a reduction is about to be - performed in an inconsistent state (which, for the purposes of LAC, - includes consistent states that don't know they're consistent because - their default reductions have been disabled). Iff there is a - lookahead token, it should also be invoked before reporting a syntax - error. This latter case is for the sake of the debugging output. - - For parse.lac=full, the implementation of YY_LAC_ESTABLISH is as - follows. If no initial context is currently established for the - current lookahead, then check if that lookahead can eventually be - shifted if syntactic actions continue from the current context. - Report a syntax error if it cannot. */ -#define YY_LAC_ESTABLISH \ -do { \ - if (!yy_lac_established) \ - { \ - YYDPRINTF ((stderr, \ - "LAC: initial context established for %s\n", \ - yytname[yytoken])); \ - yy_lac_established = 1; \ - { \ - int yy_lac_status = \ - yy_lac (yyesa, &yyes, &yyes_capacity, yyssp, yytoken); \ - if (yy_lac_status == 2) \ - goto yyexhaustedlab; \ - if (yy_lac_status == 1) \ - goto yyerrlab; \ - } \ - } \ -} while (0) - -/* Discard any previous initial lookahead context because of Event, - which may be a lookahead change or an invalidation of the currently - established initial context for the current lookahead. - - The most common example of a lookahead change is a shift. An example - of both cases is syntax error recovery. That is, a syntax error - occurs when the lookahead is syntactically erroneous for the - currently established initial context, so error recovery manipulates - the parser stacks to try to find a new initial context in which the - current lookahead is syntactically acceptable. If it fails to find - such a context, it discards the lookahead. */ -#if ]b4_api_PREFIX[DEBUG -# define YY_LAC_DISCARD(Event) \ -do { \ - if (yy_lac_established) \ - { \ - if (yydebug) \ - YYFPRINTF (stderr, "LAC: initial context discarded due to " \ - Event "\n"); \ - yy_lac_established = 0; \ - } \ -} while (0) -#else -# define YY_LAC_DISCARD(Event) yy_lac_established = 0 -#endif - -/* Given the stack whose top is *YYSSP, return 0 iff YYTOKEN can - eventually (after perhaps some reductions) be shifted, return 1 if - not, or return 2 if memory is exhausted. As preconditions and - postconditions: *YYES_CAPACITY is the allocated size of the array to - which *YYES points, and either *YYES = YYESA or *YYES points to an - array allocated with YYSTACK_ALLOC. yy_lac may overwrite the - contents of either array, alter *YYES and *YYES_CAPACITY, and free - any old *YYES other than YYESA. */ -static int -yy_lac (yytype_int16 *yyesa, yytype_int16 **yyes, - YYSIZE_T *yyes_capacity, yytype_int16 *yyssp, int yytoken) -{ - yytype_int16 *yyes_prev = yyssp; - yytype_int16 *yyesp = yyes_prev; - YYDPRINTF ((stderr, "LAC: checking lookahead %s:", yytname[yytoken])); - if (yytoken == YYUNDEFTOK) - { - YYDPRINTF ((stderr, " Always Err\n")); - return 1; - } - while (1) - { - int yyrule = yypact[*yyesp]; - if (yypact_value_is_default (yyrule) - || (yyrule += yytoken) < 0 || YYLAST < yyrule - || yycheck[yyrule] != yytoken) - { - yyrule = yydefact[*yyesp]; - if (yyrule == 0) - { - YYDPRINTF ((stderr, " Err\n")); - return 1; - } - } - else - { - yyrule = yytable[yyrule]; - if (yytable_value_is_error (yyrule)) - { - YYDPRINTF ((stderr, " Err\n")); - return 1; - } - if (0 < yyrule) - { - YYDPRINTF ((stderr, " S%d\n", yyrule)); - return 0; - } - yyrule = -yyrule; - } - { - YYSIZE_T yylen = yyr2[yyrule]; - YYDPRINTF ((stderr, " R%d", yyrule - 1)); - if (yyesp != yyes_prev) - { - YYSIZE_T yysize = yyesp - *yyes + 1; - if (yylen < yysize) - { - yyesp -= yylen; - yylen = 0; - } - else - { - yylen -= yysize; - yyesp = yyes_prev; - } - } - if (yylen) - yyesp = yyes_prev -= yylen; - } - { - int yystate; - { - int yylhs = yyr1[yyrule] - YYNTOKENS; - yystate = yypgoto[yylhs] + *yyesp; - if (yystate < 0 || YYLAST < yystate - || yycheck[yystate] != *yyesp) - yystate = yydefgoto[yylhs]; - else - yystate = yytable[yystate]; - } - if (yyesp == yyes_prev) - { - yyesp = *yyes; - *yyesp = yystate; - } - else - { - if (yy_lac_stack_realloc (yyes_capacity, 1, -#if ]b4_api_PREFIX[DEBUG - " (", ")", -#endif - yyes, yyesa, &yyesp, yyes_prev)) - { - YYDPRINTF ((stderr, "\n")); - return 2; - } - *++yyesp = yystate; - } - YYDPRINTF ((stderr, " G%d", yystate)); - } - } -}]])[ - - -#if YYERROR_VERBOSE - -# ifndef yystrlen -# if defined __GLIBC__ && defined _STRING_H -# define yystrlen strlen -# else -/* Return the length of YYSTR. */ -]b4_function_define([yystrlen], [static YYSIZE_T], - [[const char *yystr], [yystr]])[ -{ - YYSIZE_T yylen; - for (yylen = 0; yystr[yylen]; yylen++) - continue; - return yylen; -} -# endif -# endif - -# ifndef yystpcpy -# 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. */ -]b4_function_define([yystpcpy], [static char *], - [[char *yydest], [yydest]], [[const char *yysrc], [yysrc]])[ -{ - char *yyd = yydest; - const char *yys = yysrc; - - while ((*yyd++ = *yys++) != '\0') - continue; - - return yyd - 1; -} -# endif -# endif - -# ifndef yytnamerr -/* Copy to YYRES the contents of YYSTR after stripping away unnecessary - quotes and backslashes, so that it's suitable for yyerror. The - heuristic is that double-quoting is unnecessary unless the string - contains an apostrophe, a comma, or backslash (other than - backslash-backslash). YYSTR is taken from yytname. If YYRES is - null, do not copy; instead, return the length of what the result - would have been. */ -static YYSIZE_T -yytnamerr (char *yyres, const char *yystr) -{ - if (*yystr == '"') - { - YYSIZE_T yyn = 0; - char const *yyp = yystr; - - for (;;) - switch (*++yyp) - { - case '\'': - case ',': - goto do_not_strip_quotes; - - case '\\': - if (*++yyp != '\\') - goto do_not_strip_quotes; - /* Fall through. */ - default: - if (yyres) - yyres[yyn] = *yyp; - yyn++; - break; - - case '"': - if (yyres) - yyres[yyn] = '\0'; - return yyn; - } - do_not_strip_quotes: ; - } - - if (! yyres) - return yystrlen (yystr); - - return yystpcpy (yyres, yystr) - yyres; -} -# endif - -/* Copy into *YYMSG, which is of size *YYMSG_ALLOC, an error message - about the unexpected token YYTOKEN for the state stack whose top is - YYSSP.]b4_lac_if([[ In order to see if a particular token T is a - valid looakhead, invoke yy_lac (YYESA, YYES, YYES_CAPACITY, YYSSP, T).]])[ - - Return 0 if *YYMSG was successfully written. Return 1 if *YYMSG is - not large enough to hold the message. In that case, also set - *YYMSG_ALLOC to the required number of bytes. Return 2 if the - required number of bytes is too large to store]b4_lac_if([[ or if - yy_lac returned 2]])[. */ -static int -yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg, - ]b4_lac_if([[yytype_int16 *yyesa, yytype_int16 **yyes, - YYSIZE_T *yyes_capacity, ]])[yytype_int16 *yyssp, int yytoken) -{ - YYSIZE_T yysize0 = yytnamerr (YY_NULL, yytname[yytoken]); - YYSIZE_T yysize = yysize0; - enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 }; - /* Internationalized format string. */ - const char *yyformat = YY_NULL; - /* Arguments of yyformat. */ - char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM]; - /* Number of reported tokens (one for the "unexpected", one per - "expected"). */ - int yycount = 0; - - /* There are many possibilities here to consider: - - 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 - tokens because there are none. - - The only way there can be no lookahead present (in yychar) is if - this state is a consistent state with a default action. Thus, - detecting the absence of a lookahead is sufficient to determine - that there is no unexpected or expected token to report. In that - case, just report a simple "syntax error". - - Don't assume there isn't a lookahead just because this state is a - consistent state with a default action. There might have been a - previous inconsistent state, consistent state with a non-default - action, or user semantic action that manipulated yychar.]b4_lac_if([[ - In the first two cases, it might appear that the current syntax - error should have been detected in the previous state when yy_lac - was invoked. However, at that time, there might have been a - different syntax error that discarded a different initial context - during error recovery, leaving behind the current lookahead.]], [[ - - Of course, the expected token list depends on states to have - correct lookahead information, and it depends on the parser not - to perform extra reductions after fetching a lookahead from the - scanner and before detecting a syntax error. Thus, state merging - (from LALR or IELR) and default reductions corrupt the expected - token list. However, the list is correct for canonical LR with - one exception: it will still contain any token that will not be - accepted due to an error action in a later state.]])[ - */ - if (yytoken != YYEMPTY) - { - int yyn = yypact[*yyssp];]b4_lac_if([[ - YYDPRINTF ((stderr, "Constructing syntax error message\n"));]])[ - yyarg[yycount++] = yytname[yytoken]; - if (!yypact_value_is_default (yyn)) - {]b4_lac_if([], [[ - /* Start YYX at -YYN if negative to avoid negative indexes in - YYCHECK. In other words, skip the first -YYN actions for - this state because they are default actions. */ - int yyxbegin = yyn < 0 ? -yyn : 0; - /* Stay within bounds of both yycheck and yytname. */ - int yychecklim = YYLAST - yyn + 1; - int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;]])[ - int yyx;]b4_lac_if([[ - - for (yyx = 0; yyx < YYNTOKENS; ++yyx) - if (yyx != YYTERROR && yyx != YYUNDEFTOK) - { - { - int yy_lac_status = yy_lac (yyesa, yyes, yyes_capacity, - yyssp, yyx); - if (yy_lac_status == 2) - return 2; - if (yy_lac_status == 1) - continue; - }]], [[ - - for (yyx = yyxbegin; yyx < yyxend; ++yyx) - if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR - && !yytable_value_is_error (yytable[yyx + yyn])) - {]])[ - if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM) - { - yycount = 1; - yysize = yysize0; - break; - } - yyarg[yycount++] = yytname[yyx]; - { - 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 - else if (yydebug) - YYFPRINTF (stderr, "No expected tokens.\n"); -# endif]])[ - } - - switch (yycount) - { -# define YYCASE_(N, S) \ - case N: \ - yyformat = S; \ - break - YYCASE_(0, YY_("syntax error")); - YYCASE_(1, YY_("syntax error, unexpected %s")); - YYCASE_(2, YY_("syntax error, unexpected %s, expecting %s")); - YYCASE_(3, YY_("syntax error, unexpected %s, expecting %s or %s")); - YYCASE_(4, YY_("syntax error, unexpected %s, expecting %s or %s or %s")); - YYCASE_(5, YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s")); -# undef YYCASE_ - } - - { - YYSIZE_T yysize1 = yysize + yystrlen (yyformat); - if (! (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM)) - return 2; - yysize = yysize1; - } - - if (*yymsg_alloc < yysize) - { - *yymsg_alloc = 2 * yysize; - if (! (yysize <= *yymsg_alloc - && *yymsg_alloc <= YYSTACK_ALLOC_MAXIMUM)) - *yymsg_alloc = YYSTACK_ALLOC_MAXIMUM; - return 1; - } - - /* 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 = *yymsg; - int yyi = 0; - while ((*yyp = *yyformat) != '\0') - if (*yyp == '%' && yyformat[1] == 's' && yyi < yycount) - { - yyp += yytnamerr (yyp, yyarg[yyi++]); - yyformat += 2; - } - else - { - yyp++; - yyformat++; - } - } - return 0; -} -#endif /* YYERROR_VERBOSE */ - -]b4_yydestruct_define[ - -]b4_pure_if([], [ - -b4_declare_scanner_communication_variables])[]b4_push_if([[ - -struct yypstate - {]b4_declare_parser_state_variables[ - /* Used to determine if this is the first time this instance has - been used. */ - int yynew; - };]b4_pure_if([], [[ - -static char yypstate_allocated = 0;]])b4_pull_if([ - -b4_function_define([[yyparse]], [[int]], b4_parse_param)[ -{ - return yypull_parse (YY_NULL]m4_ifset([b4_parse_param], - [[, ]b4_args(b4_parse_param)])[); -} - -]b4_function_define([[yypull_parse]], [[int]], - [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [, - b4_parse_param]))[ -{ - int yystatus; - yypstate *yyps_local;]b4_pure_if([[ - int yychar; - YYSTYPE yylval;]b4_locations_if([[ - static YYLTYPE yyloc_default][]b4_yyloc_default[; - YYLTYPE yylloc = yyloc_default;]])])[ - if (yyps) - yyps_local = yyps; - else - { - yyps_local = yypstate_new (); - if (!yyps_local) - {]b4_pure_if([[ - yyerror (]b4_yyerror_args[YY_("memory exhausted"));]], [[ - if (!yypstate_allocated) - yyerror (]b4_yyerror_args[YY_("memory exhausted"));]])[ - return 2; - } - } - do { - yychar = ]b4_lex[; - yystatus = - 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); - return yystatus; -}]])[ - -/* Initialize the parser data structure. */ -]b4_function_define([[yypstate_new]], [[yypstate *]])[ -{ - yypstate *yyps;]b4_pure_if([], [[ - if (yypstate_allocated) - return YY_NULL;]])[ - yyps = (yypstate *) malloc (sizeof *yyps); - if (!yyps) - return YY_NULL; - yyps->yynew = 1;]b4_pure_if([], [[ - yypstate_allocated = 1;]])[ - return yyps; -} - -]b4_function_define([[yypstate_delete]], [[void]], - [[[yypstate *yyps]], [[yyps]]])[ -{ -#ifndef yyoverflow - /* If the stack was reallocated but the parse did not complete, then the - stack still needs to be freed. */ - if (!yyps->yynew && yyps->yyss != yyps->yyssa) - YYSTACK_FREE (yyps->yyss); -#endif]b4_lac_if([[ - if (!yyps->yynew && yyps->yyes != yyps->yyesa) - YYSTACK_FREE (yyps->yyes);]])[ - free (yyps);]b4_pure_if([], [[ - yypstate_allocated = 0;]])[ -} -]b4_pure_if([[ -#define ]b4_prefix[nerrs yyps->]b4_prefix[nerrs]])[ -#define yystate yyps->yystate -#define yyerrstatus yyps->yyerrstatus -#define yyssa yyps->yyssa -#define yyss yyps->yyss -#define yyssp yyps->yyssp -#define yyvsa yyps->yyvsa -#define yyvs yyps->yyvs -#define yyvsp yyps->yyvsp]b4_locations_if([[ -#define yylsa yyps->yylsa -#define yyls yyps->yyls -#define yylsp yyps->yylsp -#define yyerror_range yyps->yyerror_range]])[ -#define yystacksize yyps->yystacksize]b4_lac_if([[ -#define yyesa yyps->yyesa -#define yyes yyps->yyes -#define yyes_capacity yyps->yyes_capacity]])[ - - -/*---------------. -| yypush_parse. | -`---------------*/ - -]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 *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [, - b4_parse_param]))], [[ - - -/*----------. -| yyparse. | -`----------*/ - -]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; - YYSTYPE yypushed_val = yylval;]b4_locations_if([[ - YYLTYPE yypushed_loc = yylloc;]]) -])], - [b4_declare_parser_state_variables -])b4_lac_if([[ - int yy_lac_established = 0;]])[ - int yyn; - int yyresult; - /* Lookahead token as an internal (translated) token number. */ - int yytoken = 0; - /* The variables used to return semantic value and location from the - action routines. */ - YYSTYPE yyval;]b4_locations_if([[ - YYLTYPE yyloc;]])[ - -#if YYERROR_VERBOSE - /* Buffer for error messages, and its allocated size. */ - char yymsgbuf[128]; - char *yymsg = yymsgbuf; - YYSIZE_T yymsg_alloc = sizeof yymsgbuf; -#endif - -#define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N)]b4_locations_if([, yylsp -= (N)])[) - - /* The number of symbols on the RHS of the reduced rule. - Keep to zero when no symbol should be popped. */ - int yylen = 0;]b4_push_if([[ - - if (!yyps->yynew) - { - yyn = yypact[yystate]; - goto yyread_pushed_token; - }]])[ - - yyssp = yyss = yyssa; - yyvsp = yyvs = yyvsa;]b4_locations_if([[ - yylsp = yyls = yylsa;]])[ - yystacksize = YYINITDEPTH;]b4_lac_if([[ - - yyes = yyesa; - yyes_capacity = sizeof yyesa / sizeof *yyes; - if (YYMAXDEPTH < yyes_capacity) - yyes_capacity = YYMAXDEPTH;]])[ - - YYDPRINTF ((stderr, "Starting parse\n")); - - yystate = 0; - yyerrstatus = 0; - yynerrs = 0; - yychar = YYEMPTY; /* Cause a token to be read. */ -]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 -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 -[ goto yysetstate; - -/*------------------------------------------------------------. -| 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++; - - yysetstate: - *yyssp = yystate; - - if (yyss + yystacksize - 1 <= yyssp) - { - /* Get the current used size of the three stacks, in elements. */ - YYSIZE_T yysize = yyssp - yyss + 1; - -#ifdef yyoverflow - { - /* 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; - yytype_int16 *yyss1 = yyss;]b4_locations_if([ - YYLTYPE *yyls1 = yyls;])[ - - /* Each stack pointer address is followed by the size of the - data in use in that stack, in bytes. This used to be a - conditional around just the two extra args, but that might - be undefined if yyoverflow is a macro. */ - yyoverflow (YY_("memory exhausted"), - &yyss1, yysize * sizeof (*yyssp), - &yyvs1, yysize * sizeof (*yyvsp),]b4_locations_if([ - &yyls1, yysize * sizeof (*yylsp),])[ - &yystacksize); -]b4_locations_if([ - yyls = yyls1;])[ - yyss = yyss1; - yyvs = yyvs1; - } -#else /* no yyoverflow */ -# ifndef YYSTACK_RELOCATE - goto yyexhaustedlab; -# else - /* Extend the stack our own way. */ - if (YYMAXDEPTH <= yystacksize) - goto yyexhaustedlab; - yystacksize *= 2; - if (YYMAXDEPTH < yystacksize) - yystacksize = YYMAXDEPTH; - - { - yytype_int16 *yyss1 = yyss; - union yyalloc *yyptr = - (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize)); - if (! yyptr) - goto yyexhaustedlab; - YYSTACK_RELOCATE (yyss_alloc, yyss); - YYSTACK_RELOCATE (yyvs_alloc, yyvs);]b4_locations_if([ - YYSTACK_RELOCATE (yyls_alloc, yyls);])[ -# undef YYSTACK_RELOCATE - if (yyss1 != yyssa) - YYSTACK_FREE (yyss1); - } -# endif -#endif /* no yyoverflow */ - - yyssp = yyss + yysize - 1; - yyvsp = yyvs + yysize - 1;]b4_locations_if([ - yylsp = yyls + yysize - 1;])[ - - YYDPRINTF ((stderr, "Stack size increased to %lu\n", - (unsigned long int) yystacksize)); - - if (yyss + yystacksize - 1 <= yyssp) - YYABORT; - } - - YYDPRINTF ((stderr, "Entering state %d\n", yystate)); - - if (yystate == YYFINAL) - YYACCEPT; - - goto yybackup; - -/*-----------. -| yybackup. | -`-----------*/ -yybackup: - - /* Do appropriate processing given the current state. Read a - lookahead token if we need one and don't already have one. */ - - /* First try to decide what to do without reference to lookahead token. */ - yyn = yypact[yystate]; - if (yypact_value_is_default (yyn)) - goto yydefault; - - /* Not known => get a lookahead token if don't already have one. */ - - /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */ - if (yychar == YYEMPTY) - {]b4_push_if([[ - if (!yyps->yynew) - {]b4_use_push_for_pull_if([], [[ - YYDPRINTF ((stderr, "Return for a new token:\n"));]])[ - yyresult = YYPUSH_MORE; - goto yypushreturn; - } - yyps->yynew = 0;]b4_pure_if([], [[ - /* Restoring the pushed token is only necessary for the first - yypush_parse invocation since subsequent invocations don't overwrite - it before jumping to yyread_pushed_token. */ - yychar = yypushed_char; - yylval = yypushed_val;]b4_locations_if([[ - yylloc = yypushed_loc;]])])[ -yyread_pushed_token:]])[ - YYDPRINTF ((stderr, "Reading a token: "));]b4_push_if([b4_pure_if([[ - yychar = yypushed_char; - if (yypushed_val) - yylval = *yypushed_val;]b4_locations_if([[ - if (yypushed_loc) - yylloc = *yypushed_loc;]])])], [[ - yychar = ]b4_lex[;]])[ - } - - if (yychar <= YYEOF) - { - yychar = yytoken = YYEOF; - YYDPRINTF ((stderr, "Now at end of input.\n")); - } - else - { - 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 - detect an error, take that action. */ - yyn += yytoken; - if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)]b4_lac_if([[ - { - YY_LAC_ESTABLISH; - goto yydefault; - }]], [[ - goto yydefault;]])[ - yyn = yytable[yyn]; - if (yyn <= 0) - { - if (yytable_value_is_error (yyn)) - goto yyerrlab;]b4_lac_if([[ - YY_LAC_ESTABLISH;]])[ - yyn = -yyn; - goto yyreduce; - } - - /* Count tokens shifted since error; after three, turn off error - status. */ - if (yyerrstatus) - yyerrstatus--; - - /* Shift the lookahead token. */ - YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc); - - /* Discard the shifted token. */ - yychar = YYEMPTY;]b4_lac_if([[ - 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; - - -/*-----------------------------------------------------------. -| yydefault -- do the default action for the current state. | -`-----------------------------------------------------------*/ -yydefault: - yyn = yydefact[yystate]; - if (yyn == 0) - goto yyerrlab; - goto yyreduce; - - -/*-----------------------------. -| yyreduce -- Do a reduction. | -`-----------------------------*/ -yyreduce: - /* yyn is the number of a rule to reduce with. */ - yylen = yyr2[yyn]; - - /* If YYLEN is nonzero, implement the default value of the action: - '$$ = $1'. - - Otherwise, the following line sets YYVAL to garbage. - This behavior is undocumented and Bison - users should not rely upon it. Assigning to YYVAL - unconditionally makes the parser a bit smaller, and it avoids a - GCC warning that YYVAL may be used uninitialized. */ - yyval = yyvsp[1-yylen]; - -]b4_locations_if( -[[ /* Default location. */ - YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);]])[ - YY_REDUCE_PRINT (yyn);]b4_lac_if([[ - { - int yychar_backup = yychar; - switch (yyn) - { - ]b4_user_actions[ - default: break; - } - if (yychar_backup != yychar) - YY_LAC_DISCARD ("yychar change"); - }]], [[ - switch (yyn) - { - ]b4_user_actions[ - default: break; - }]])[ - /* User semantic actions sometimes alter yychar, and that requires - that yytoken be updated with the new translation. We take the - approach of translating immediately before every use of yytoken. - One alternative is translating here after every semantic action, - but that translation would be missed if the semantic action invokes - YYABORT, YYACCEPT, or YYERROR immediately after altering yychar or - if it invokes YYBACKUP. In the case of YYABORT or YYACCEPT, an - incorrect destructor might then be invoked immediately. In the - case of YYERROR or YYBACKUP, subsequent parser actions might lead - to an incorrect destructor call or verbose syntax error message - before the lookahead is translated. */ - YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc); - - YYPOPSTACK (yylen); - yylen = 0; - YY_STACK_PRINT (yyss, yyssp); - - *++yyvsp = yyval;]b4_locations_if([ - *++yylsp = yyloc;])[ - - /* Now 'shift' the result of the reduction. Determine what state - that goes to, based on the state we popped back to and the rule - number reduced by. */ - - yyn = yyr1[yyn]; - - yystate = yypgoto[yyn - YYNTOKENS] + *yyssp; - if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp) - yystate = yytable[yystate]; - else - yystate = yydefgoto[yyn - YYNTOKENS]; - - goto yynewstate; - - -/*--------------------------------------. -| yyerrlab -- here on detecting error. | -`--------------------------------------*/ -yyerrlab: - /* Make sure we have latest lookahead translation. See comments at - user semantic actions for why this is necessary. */ - yytoken = yychar == YYEMPTY ? YYEMPTY : YYTRANSLATE (yychar); - - /* If not already recovering from an error, report this error. */ - if (!yyerrstatus) - { - ++yynerrs; -#if ! YYERROR_VERBOSE - yyerror (]b4_yyerror_args[YY_("syntax error")); -#else -# define YYSYNTAX_ERROR yysyntax_error (&yymsg_alloc, &yymsg, \]b4_lac_if([[ - yyesa, &yyes, &yyes_capacity, \]])[ - yyssp, yytoken) - { - char const *yymsgp = YY_("syntax error"); - int yysyntax_error_status;]b4_lac_if([[ - if (yychar != YYEMPTY) - YY_LAC_ESTABLISH;]])[ - yysyntax_error_status = YYSYNTAX_ERROR; - if (yysyntax_error_status == 0) - yymsgp = yymsg; - else if (yysyntax_error_status == 1) - { - if (yymsg != yymsgbuf) - YYSTACK_FREE (yymsg); - yymsg = (char *) YYSTACK_ALLOC (yymsg_alloc); - if (!yymsg) - { - yymsg = yymsgbuf; - yymsg_alloc = sizeof yymsgbuf; - yysyntax_error_status = 2; - } - else - { - yysyntax_error_status = YYSYNTAX_ERROR; - yymsgp = yymsg; - } - } - yyerror (]b4_yyerror_args[yymsgp); - if (yysyntax_error_status == 2) - goto yyexhaustedlab; - } -# undef YYSYNTAX_ERROR -#endif - } - -]b4_locations_if([[ yyerror_range[1] = yylloc;]])[ - - if (yyerrstatus == 3) - { - /* If just tried and failed to reuse lookahead token after an - error, discard it. */ - - if (yychar <= YYEOF) - { - /* Return failure if at end of input. */ - if (yychar == YYEOF) - YYABORT; - } - else - { - yydestruct ("Error: discarding", - yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[); - yychar = YYEMPTY; - } - } - - /* Else will try to reuse lookahead 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 (/*CONSTCOND*/ 0) - goto yyerrorlab; - -]b4_locations_if([[ yyerror_range[1] = yylsp[1-yylen]; -]])[ /* Do not reclaim the symbols of the rule whose action triggered - this YYERROR. */ - YYPOPSTACK (yylen); - yylen = 0; - YY_STACK_PRINT (yyss, yyssp); - yystate = *yyssp; - goto yyerrlab1; - - -/*-------------------------------------------------------------. -| yyerrlab1 -- common code for both syntax error and YYERROR. | -`-------------------------------------------------------------*/ -yyerrlab1: - yyerrstatus = 3; /* Each real token shifted decrements this. */ - - for (;;) - { - yyn = yypact[yystate]; - if (!yypact_value_is_default (yyn)) - { - yyn += YYTERROR; - if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR) - { - yyn = yytable[yyn]; - if (0 < yyn) - break; - } - } - - /* Pop the current state because it cannot handle the error token. */ - if (yyssp == yyss) - YYABORT; - -]b4_locations_if([[ yyerror_range[1] = *yylsp;]])[ - yydestruct ("Error: popping", - yystos[yystate], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[); - YYPOPSTACK (1); - yystate = *yyssp; - YY_STACK_PRINT (yyss, yyssp); - }]b4_lac_if([[ - - /* If the stack popping above didn't lose the initial context for the - 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 - the lookahead. YYLOC is available though. */ - YYLLOC_DEFAULT (yyloc, yyerror_range, 2); - *++yylsp = yyloc;]])[ - - /* Shift the error token. */ - YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp); - - yystate = yyn; - goto yynewstate; - - -/*-------------------------------------. -| yyacceptlab -- YYACCEPT comes here. | -`-------------------------------------*/ -yyacceptlab: - yyresult = 0; - goto yyreturn; - -/*-----------------------------------. -| yyabortlab -- YYABORT comes here. | -`-----------------------------------*/ -yyabortlab: - yyresult = 1; - goto yyreturn; - -#if ]b4_lac_if([[1]], [[!defined yyoverflow || YYERROR_VERBOSE]])[ -/*-------------------------------------------------. -| yyexhaustedlab -- memory exhaustion comes here. | -`-------------------------------------------------*/ -yyexhaustedlab: - yyerror (]b4_yyerror_args[YY_("memory exhausted")); - yyresult = 2; - /* Fall through. */ -#endif - -yyreturn: - if (yychar != YYEMPTY) - { - /* Make sure we have latest lookahead translation. See comments at - user semantic actions for why this is necessary. */ - yytoken = YYTRANSLATE (yychar); - yydestruct ("Cleanup: discarding lookahead", - yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[); - } - /* Do not reclaim the symbols of the rule whose action triggered - this YYABORT or YYACCEPT. */ - YYPOPSTACK (yylen); - YY_STACK_PRINT (yyss, yyssp); - while (yyssp != yyss) - { - yydestruct ("Cleanup: popping", - yystos[*yyssp], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[); - YYPOPSTACK (1); - } -#ifndef yyoverflow - if (yyss != yyssa) - YYSTACK_FREE (yyss); -#endif]b4_lac_if([[ - if (yyes != yyesa) - YYSTACK_FREE (yyes);]])b4_push_if([[ - yyps->yynew = 1; - -yypushreturn:]])[ -#if YYERROR_VERBOSE - if (yymsg != yymsgbuf) - YYSTACK_FREE (yymsg); -#endif - return yyresult; -} -]b4_epilogue[]dnl -b4_output_end() - -b4_defines_if( -[b4_output_begin([b4_spec_defines_file])[ -]b4_copyright([Bison interface for Yacc-like parsers in C])[ - -]b4_shared_declarations[ -]b4_output_end() -])# b4_defines_if |