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Diffstat (limited to 'gnuwin32/bin/data/yacc.c')
| -rw-r--r-- | gnuwin32/bin/data/yacc.c | 1915 |
1 files changed, 1915 insertions, 0 deletions
diff --git a/gnuwin32/bin/data/yacc.c b/gnuwin32/bin/data/yacc.c new file mode 100644 index 00000000..822656b8 --- /dev/null +++ b/gnuwin32/bin/data/yacc.c @@ -0,0 +1,1915 @@ + -*- 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 |