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Diffstat (limited to 'gnuwin32/share/bison/lalr1.cc')
| -rw-r--r-- | gnuwin32/share/bison/lalr1.cc | 1157 |
1 files changed, 0 insertions, 1157 deletions
diff --git a/gnuwin32/share/bison/lalr1.cc b/gnuwin32/share/bison/lalr1.cc deleted file mode 100644 index ca1dfccd..00000000 --- a/gnuwin32/share/bison/lalr1.cc +++ /dev/null @@ -1,1157 +0,0 @@ -# C++ skeleton for Bison - -# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008 -# Free Software Foundation, Inc. - -# 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/>. - -m4_include(b4_pkgdatadir/[c++.m4]) - -m4_define([b4_parser_class_name], - [b4_percent_define_get([[parser_class_name]])]) - -# The header is mandatory. -b4_defines_if([], - [b4_fatal([b4_skeleton[: using %%defines is mandatory]])]) - -# Backward compatibility. -m4_define([b4_location_constructors]) -m4_include(b4_pkgdatadir/[location.cc]) - -# We do want M4 expansion after # for CPP macros. -m4_changecom() -m4_divert_push(0)dnl -b4_defines_if( -[@output(b4_spec_defines_file@) -b4_copyright([Skeleton interface for Bison LALR(1) parsers in C++], - [2002, 2003, 2004, 2005, 2006, 2007, 2008]) -dnl FIXME: This is wrong, we want computed header guards. -[ -/* C++ LALR(1) parser skeleton written by Akim Demaille. */ - -#ifndef PARSER_HEADER_H -# define PARSER_HEADER_H - -]b4_percent_code_get([[requires]])[ - -#include <string> -#include <iostream> -#include "stack.hh" - -]b4_namespace_open[ - class position; - class location; -]b4_namespace_close[ - -#include "location.hh" - -/* Enabling traces. */ -#ifndef YYDEBUG -# define YYDEBUG ]b4_debug_flag[ -#endif - -/* Enabling verbose error messages. */ -#ifdef YYERROR_VERBOSE -# undef YYERROR_VERBOSE -# define YYERROR_VERBOSE 1 -#else -# define YYERROR_VERBOSE ]b4_error_verbose_flag[ -#endif - -/* Enabling the token table. */ -#ifndef YYTOKEN_TABLE -# define YYTOKEN_TABLE ]b4_token_table[ -#endif - -/* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N]. - If N is 0, then set CURRENT to the empty location which ends - the previous symbol: RHS[0] (always defined). */ - -#ifndef YYLLOC_DEFAULT -# define YYLLOC_DEFAULT(Current, Rhs, N) \ -do { \ - if (N) \ - { \ - (Current).begin = (Rhs)[1].begin; \ - (Current).end = (Rhs)[N].end; \ - } \ - else \ - { \ - (Current).begin = (Current).end = (Rhs)[0].end; \ - } \ -} while (false) -#endif - -]b4_namespace_open[ - - /// A Bison parser. - class ]b4_parser_class_name[ - { - public: - /// Symbol semantic values. -#ifndef YYSTYPE -]m4_ifdef([b4_stype], -[ union semantic_type - { -b4_user_stype - };], -[m4_if(b4_tag_seen_flag, 0, -[[ typedef int semantic_type;]], -[[ typedef YYSTYPE semantic_type;]])])[ -#else - typedef YYSTYPE semantic_type; -#endif - /// Symbol locations. - typedef ]b4_percent_define_get([[location_type]])[ location_type; - /// Tokens. - struct token - { - ]b4_token_enums(b4_tokens)[ - }; - /// Token type. - typedef token::yytokentype token_type; - - /// Build a parser object. - ]b4_parser_class_name[ (]b4_parse_param_decl[); - virtual ~]b4_parser_class_name[ (); - - /// Parse. - /// \returns 0 iff parsing succeeded. - virtual int parse (); - -#if YYDEBUG - /// The current debugging stream. - std::ostream& debug_stream () const; - /// Set the current debugging stream. - void set_debug_stream (std::ostream &); - - /// Type for debugging levels. - typedef int debug_level_type; - /// The current debugging level. - debug_level_type debug_level () const; - /// Set the current debugging level. - void set_debug_level (debug_level_type l); -#endif - - private: - /// Report a syntax error. - /// \param loc where the syntax error is found. - /// \param msg a description of the syntax error. - virtual void error (const location_type& loc, const std::string& msg); - - /// Generate an error message. - /// \param state the state where the error occurred. - /// \param tok the lookahead token. - virtual std::string yysyntax_error_ (int yystate]dnl -b4_error_verbose_if([, int tok])[); - -#if YYDEBUG - /// \brief Report a symbol value on the debug stream. - /// \param yytype The token type. - /// \param yyvaluep Its semantic value. - /// \param yylocationp Its location. - virtual void yy_symbol_value_print_ (int yytype, - const semantic_type* yyvaluep, - const location_type* yylocationp); - /// \brief Report a symbol on the debug stream. - /// \param yytype The token type. - /// \param yyvaluep Its semantic value. - /// \param yylocationp Its location. - virtual void yy_symbol_print_ (int yytype, - const semantic_type* yyvaluep, - const location_type* yylocationp); -#endif - - - /// State numbers. - typedef int state_type; - /// State stack type. - typedef stack<state_type> state_stack_type; - /// Semantic value stack type. - typedef stack<semantic_type> semantic_stack_type; - /// location stack type. - typedef stack<location_type> location_stack_type; - - /// The state stack. - state_stack_type yystate_stack_; - /// The semantic value stack. - semantic_stack_type yysemantic_stack_; - /// The location stack. - location_stack_type yylocation_stack_; - - /// Internal symbol numbers. - typedef ]b4_int_type_for([b4_translate])[ token_number_type; - /* Tables. */ - /// For a state, the index in \a yytable_ of its portion. - static const ]b4_int_type_for([b4_pact])[ yypact_[]; - static const ]b4_int_type(b4_pact_ninf, b4_pact_ninf)[ yypact_ninf_; - - /// For a state, default rule to reduce. - /// Unless\a yytable_ specifies something else to do. - /// Zero means the default is an error. - static const ]b4_int_type_for([b4_defact])[ yydefact_[]; - - static const ]b4_int_type_for([b4_pgoto])[ yypgoto_[]; - static const ]b4_int_type_for([b4_defgoto])[ yydefgoto_[]; - - /// What to do in a state. - /// \a yytable_[yypact_[s]]: what to do in state \a s. - /// - if positive, shift that token. - /// - if negative, reduce the rule which number is the opposite. - /// - if zero, do what YYDEFACT says. - static const ]b4_int_type_for([b4_table])[ yytable_[]; - static const ]b4_int_type(b4_table_ninf, b4_table_ninf)[ yytable_ninf_; - - static const ]b4_int_type_for([b4_check])[ yycheck_[]; - - /// For a state, its accessing symbol. - static const ]b4_int_type_for([b4_stos])[ yystos_[]; - - /// For a rule, its LHS. - static const ]b4_int_type_for([b4_r1])[ yyr1_[]; - /// For a rule, its RHS length. - static const ]b4_int_type_for([b4_r2])[ yyr2_[]; - -#if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE - /// For a symbol, its name in clear. - static const char* const yytname_[]; -#endif - -#if YYERROR_VERBOSE - /// Convert the symbol name \a n to a form suitable for a diagnostic. - virtual std::string yytnamerr_ (const char *n); -#endif - -#if YYDEBUG - /// A type to store symbol numbers and -1. - typedef ]b4_int_type_for([b4_rhs])[ rhs_number_type; - /// A `-1'-separated list of the rules' RHS. - static const rhs_number_type yyrhs_[]; - /// For each rule, the index of the first RHS symbol in \a yyrhs_. - static const ]b4_int_type_for([b4_prhs])[ yyprhs_[]; - /// For each rule, its source line number. - static const ]b4_int_type_for([b4_rline])[ yyrline_[]; - /// For each scanner token number, its symbol number. - static const ]b4_int_type_for([b4_toknum])[ yytoken_number_[]; - /// Report on the debug stream that the rule \a r is going to be reduced. - virtual void yy_reduce_print_ (int r); - /// Print the state stack on the debug stream. - virtual void yystack_print_ (); - - /* Debugging. */ - int yydebug_; - std::ostream* yycdebug_; -#endif - - /// Convert a scanner token number \a t to a symbol number. - token_number_type yytranslate_ (int t); - - /// \brief Reclaim the memory associated to a symbol. - /// \param yymsg Why this token is reclaimed. - /// \param yytype The symbol type. - /// \param yyvaluep Its semantic value. - /// \param yylocationp Its location. - inline void yydestruct_ (const char* yymsg, - int yytype, - semantic_type* yyvaluep, - location_type* yylocationp); - - /// Pop \a n symbols the three stacks. - inline void yypop_ (unsigned int n = 1); - - /* Constants. */ - static const int yyeof_; - /* LAST_ -- Last index in TABLE_. */ - static const int yylast_; - static const int yynnts_; - static const int yyempty_; - static const int yyfinal_; - static const int yyterror_; - static const int yyerrcode_; - static const int yyntokens_; - static const unsigned int yyuser_token_number_max_; - static const token_number_type yyundef_token_; -]b4_parse_param_vars[ - }; -]b4_namespace_close[ - -]b4_percent_define_flag_if([[global_tokens_and_yystype]], -[b4_token_defines(b4_tokens) - -#ifndef YYSTYPE - /* Redirection for backward compatibility. */ -# define YYSTYPE b4_namespace_ref::b4_parser_class_name::semantic_type -#endif -]) -b4_percent_code_get([[provides]])[]dnl - -[#endif /* ! defined PARSER_HEADER_H */] -])dnl -@output(b4_parser_file_name@) -b4_copyright([Skeleton implementation for Bison LALR(1) parsers in C++], - [2002, 2003, 2004, 2005, 2006, 2007, 2008]) -b4_percent_code_get([[top]])[]dnl -m4_if(b4_prefix, [yy], [], -[ -// Take the name prefix into account. -#define yylex b4_prefix[]lex])[ - -/* First part of user declarations. */ -]b4_user_pre_prologue - -b4_defines_if([[ -#include "@basename(]b4_spec_defines_file[@)"]])[ - -/* User implementation prologue. */ -]b4_user_post_prologue -b4_percent_code_get[]dnl - -[#ifndef YY_ -# if YYENABLE_NLS -# if ENABLE_NLS -# include <libintl.h> /* FIXME: INFRINGES ON USER NAME SPACE */ -# define YY_(msgid) dgettext ("bison-runtime", msgid) -# endif -# endif -# ifndef YY_ -# define YY_(msgid) msgid -# endif -#endif - -/* Suppress unused-variable warnings by "using" E. */ -#define YYUSE(e) ((void) (e)) - -/* Enable debugging if requested. */ -#if YYDEBUG - -/* A pseudo ostream that takes yydebug_ into account. */ -# define YYCDEBUG if (yydebug_) (*yycdebug_) - -# define YY_SYMBOL_PRINT(Title, Type, Value, Location) \ -do { \ - if (yydebug_) \ - { \ - *yycdebug_ << Title << ' '; \ - yy_symbol_print_ ((Type), (Value), (Location)); \ - *yycdebug_ << std::endl; \ - } \ -} while (false) - -# define YY_REDUCE_PRINT(Rule) \ -do { \ - if (yydebug_) \ - yy_reduce_print_ (Rule); \ -} while (false) - -# define YY_STACK_PRINT() \ -do { \ - if (yydebug_) \ - yystack_print_ (); \ -} while (false) - -#else /* !YYDEBUG */ - -# define YYCDEBUG if (false) std::cerr -# define YY_SYMBOL_PRINT(Title, Type, Value, Location) -# define YY_REDUCE_PRINT(Rule) -# define YY_STACK_PRINT() - -#endif /* !YYDEBUG */ - -#define yyerrok (yyerrstatus_ = 0) -#define yyclearin (yychar = yyempty_) - -#define YYACCEPT goto yyacceptlab -#define YYABORT goto yyabortlab -#define YYERROR goto yyerrorlab -#define YYRECOVERING() (!!yyerrstatus_) - -]b4_namespace_open[ -#if YYERROR_VERBOSE - - /* Return 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. */ - std::string - ]b4_parser_class_name[::yytnamerr_ (const char *yystr) - { - if (*yystr == '"') - { - std::string yyr = ""; - 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: - yyr += *yyp; - break; - - case '"': - return yyr; - } - do_not_strip_quotes: ; - } - - return yystr; - } - -#endif - - /// Build a parser object. - ]b4_parser_class_name::b4_parser_class_name[ (]b4_parse_param_decl[)]m4_ifset([b4_parse_param], [ - :])[ -#if YYDEBUG - ]m4_ifset([b4_parse_param], [ ], [ :])[yydebug_ (false), - yycdebug_ (&std::cerr)]m4_ifset([b4_parse_param], [,])[ -#endif]b4_parse_param_cons[ - { - } - - ]b4_parser_class_name::~b4_parser_class_name[ () - { - } - -#if YYDEBUG - /*--------------------------------. - | Print this symbol on YYOUTPUT. | - `--------------------------------*/ - - inline void - ]b4_parser_class_name[::yy_symbol_value_print_ (int yytype, - const semantic_type* yyvaluep, const location_type* yylocationp) - { - YYUSE (yylocationp); - YYUSE (yyvaluep); - switch (yytype) - { - ]m4_map([b4_symbol_actions], m4_defn([b4_symbol_printers]))dnl -[ default: - break; - } - } - - - void - ]b4_parser_class_name[::yy_symbol_print_ (int yytype, - const semantic_type* yyvaluep, const location_type* yylocationp) - { - *yycdebug_ << (yytype < yyntokens_ ? "token" : "nterm") - << ' ' << yytname_[yytype] << " (" - << *yylocationp << ": "; - yy_symbol_value_print_ (yytype, yyvaluep, yylocationp); - *yycdebug_ << ')'; - } -#endif - - void - ]b4_parser_class_name[::yydestruct_ (const char* yymsg, - int yytype, semantic_type* yyvaluep, location_type* yylocationp) - { - YYUSE (yylocationp); - YYUSE (yymsg); - YYUSE (yyvaluep); - - YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp); - - switch (yytype) - { - ]m4_map([b4_symbol_actions], m4_defn([b4_symbol_destructors]))[ - default: - break; - } - } - - void - ]b4_parser_class_name[::yypop_ (unsigned int n) - { - yystate_stack_.pop (n); - yysemantic_stack_.pop (n); - yylocation_stack_.pop (n); - } - -#if YYDEBUG - std::ostream& - ]b4_parser_class_name[::debug_stream () const - { - return *yycdebug_; - } - - void - ]b4_parser_class_name[::set_debug_stream (std::ostream& o) - { - yycdebug_ = &o; - } - - - ]b4_parser_class_name[::debug_level_type - ]b4_parser_class_name[::debug_level () const - { - return yydebug_; - } - - void - ]b4_parser_class_name[::set_debug_level (debug_level_type l) - { - yydebug_ = l; - } -#endif - - int - ]b4_parser_class_name[::parse () - { - /// Lookahead and lookahead in internal form. - int yychar = yyempty_; - int yytoken = 0; - - /* State. */ - int yyn; - int yylen = 0; - int yystate = 0; - - /* Error handling. */ - int yynerrs_ = 0; - int yyerrstatus_ = 0; - - /// Semantic value of the lookahead. - semantic_type yylval; - /// Location of the lookahead. - location_type yylloc; - /// The locations where the error started and ended. - location_type yyerror_range[2]; - - /// $$. - semantic_type yyval; - /// @@$. - location_type yyloc; - - int yyresult; - - YYCDEBUG << "Starting parse" << std::endl; - -]m4_ifdef([b4_initial_action], [ -m4_pushdef([b4_at_dollar], [yylloc])dnl -m4_pushdef([b4_dollar_dollar], [yylval])dnl - /* User initialization code. */ - b4_user_initial_action -m4_popdef([b4_dollar_dollar])dnl -m4_popdef([b4_at_dollar])])dnl - - [ /* Initialize the stacks. The initial state will be pushed in - yynewstate, since the latter expects the semantical and the - location values to have been already stored, initialize these - stacks with a primary value. */ - yystate_stack_ = state_stack_type (0); - yysemantic_stack_ = semantic_stack_type (0); - yylocation_stack_ = location_stack_type (0); - yysemantic_stack_.push (yylval); - yylocation_stack_.push (yylloc); - - /* New state. */ - yynewstate: - yystate_stack_.push (yystate); - YYCDEBUG << "Entering state " << yystate << std::endl; - - /* Accept? */ - if (yystate == yyfinal_) - goto yyacceptlab; - - goto yybackup; - - /* Backup. */ - yybackup: - - /* Try to take a decision without lookahead. */ - yyn = yypact_[yystate]; - if (yyn == yypact_ninf_) - goto yydefault; - - /* Read a lookahead token. */ - if (yychar == yyempty_) - { - YYCDEBUG << "Reading a token: "; - yychar = ]b4_c_function_call([yylex], [int], - [[YYSTYPE*], [&yylval]][]dnl -b4_locations_if([, [[location*], [&yylloc]]])dnl -m4_ifdef([b4_lex_param], [, ]b4_lex_param))[; - } - - - /* Convert token to internal form. */ - if (yychar <= yyeof_) - { - yychar = yytoken = yyeof_; - YYCDEBUG << "Now at end of input." << std::endl; - } - 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) - goto yydefault; - - /* Reduce or error. */ - yyn = yytable_[yyn]; - if (yyn <= 0) - { - if (yyn == 0 || yyn == yytable_ninf_) - goto yyerrlab; - yyn = -yyn; - goto yyreduce; - } - - /* Shift the lookahead token. */ - YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc); - - /* Discard the token being shifted. */ - yychar = yyempty_; - - yysemantic_stack_.push (yylval); - yylocation_stack_.push (yylloc); - - /* Count tokens shifted since error; after three, turn off error - status. */ - if (yyerrstatus_) - --yyerrstatus_; - - yystate = yyn; - 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: - yylen = yyr2_[yyn]; - /* If YYLEN is nonzero, implement the default value of the action: - `$$ = $1'. Otherwise, use the top of the stack. - - Otherwise, the following line sets YYVAL to garbage. - This behavior is undocumented and Bison - users should not rely upon it. */ - if (yylen) - yyval = yysemantic_stack_[yylen - 1]; - else - yyval = yysemantic_stack_[0]; - - { - slice<location_type, location_stack_type> slice (yylocation_stack_, yylen); - YYLLOC_DEFAULT (yyloc, slice, yylen); - } - YY_REDUCE_PRINT (yyn); - switch (yyn) - { - ]b4_user_actions[ - default: - break; - } - YY_SYMBOL_PRINT ("-> $$ =", yyr1_[yyn], &yyval, &yyloc); - - yypop_ (yylen); - yylen = 0; - YY_STACK_PRINT (); - - yysemantic_stack_.push (yyval); - yylocation_stack_.push (yyloc); - - /* Shift the result of the reduction. */ - yyn = yyr1_[yyn]; - yystate = yypgoto_[yyn - yyntokens_] + yystate_stack_[0]; - if (0 <= yystate && yystate <= yylast_ - && yycheck_[yystate] == yystate_stack_[0]) - yystate = yytable_[yystate]; - else - yystate = yydefgoto_[yyn - yyntokens_]; - goto yynewstate; - - /*------------------------------------. - | yyerrlab -- here on detecting error | - `------------------------------------*/ - yyerrlab: - /* If not already recovering from an error, report this error. */ - if (!yyerrstatus_) - { - ++yynerrs_; - error (yylloc, yysyntax_error_ (yystate]dnl -b4_error_verbose_if([, yytoken])[)); - } - - yyerror_range[0] = 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, &yylloc); - 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 (false) - goto yyerrorlab; - - yyerror_range[0] = yylocation_stack_[yylen - 1]; - /* Do not reclaim the symbols of the rule which action triggered - this YYERROR. */ - yypop_ (yylen); - yylen = 0; - yystate = yystate_stack_[0]; - 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 (yyn != yypact_ninf_) - { - 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 (yystate_stack_.height () == 1) - YYABORT; - - yyerror_range[0] = yylocation_stack_[0]; - yydestruct_ ("Error: popping", - yystos_[yystate], - &yysemantic_stack_[0], &yylocation_stack_[0]); - yypop_ (); - yystate = yystate_stack_[0]; - YY_STACK_PRINT (); - } - - yyerror_range[1] = yylloc; - // Using YYLLOC is tempting, but would change the location of - // the lookahead. YYLOC is available though. - YYLLOC_DEFAULT (yyloc, (yyerror_range - 1), 2); - yysemantic_stack_.push (yylval); - yylocation_stack_.push (yyloc); - - /* Shift the error token. */ - YY_SYMBOL_PRINT ("Shifting", yystos_[yyn], - &yysemantic_stack_[0], &yylocation_stack_[0]); - - yystate = yyn; - goto yynewstate; - - /* Accept. */ - yyacceptlab: - yyresult = 0; - goto yyreturn; - - /* Abort. */ - yyabortlab: - yyresult = 1; - goto yyreturn; - - yyreturn: - if (yychar != yyempty_) - yydestruct_ ("Cleanup: discarding lookahead", yytoken, &yylval, &yylloc); - - /* Do not reclaim the symbols of the rule which action triggered - this YYABORT or YYACCEPT. */ - yypop_ (yylen); - while (yystate_stack_.height () != 1) - { - yydestruct_ ("Cleanup: popping", - yystos_[yystate_stack_[0]], - &yysemantic_stack_[0], - &yylocation_stack_[0]); - yypop_ (); - } - - return yyresult; - } - - // Generate an error message. - std::string - ]b4_parser_class_name[::yysyntax_error_ (int yystate]dnl -b4_error_verbose_if([, int tok])[) - { - std::string res; - YYUSE (yystate); -#if YYERROR_VERBOSE - int yyn = yypact_[yystate]; - if (yypact_ninf_ < yyn && yyn <= yylast_) - { - /* Start YYX at -YYN if negative to avoid negative indexes in - YYCHECK. */ - 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 count = 0; - for (int x = yyxbegin; x < yyxend; ++x) - if (yycheck_[x + yyn] == x && x != yyterror_) - ++count; - - // FIXME: This method of building the message is not compatible - // with internationalization. It should work like yacc.c does it. - // That is, first build a string that looks like this: - // "syntax error, unexpected %s or %s or %s" - // Then, invoke YY_ on this string. - // Finally, use the string as a format to output - // yytname_[tok], etc. - // Until this gets fixed, this message appears in English only. - res = "syntax error, unexpected "; - res += yytnamerr_ (yytname_[tok]); - if (count < 5) - { - count = 0; - for (int x = yyxbegin; x < yyxend; ++x) - if (yycheck_[x + yyn] == x && x != yyterror_) - { - res += (!count++) ? ", expecting " : " or "; - res += yytnamerr_ (yytname_[x]); - } - } - } - else -#endif - res = YY_("syntax error"); - return res; - } - - - /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing - STATE-NUM. */ - const ]b4_int_type(b4_pact_ninf, b4_pact_ninf) b4_parser_class_name::yypact_ninf_ = b4_pact_ninf[; - const ]b4_int_type_for([b4_pact])[ - ]b4_parser_class_name[::yypact_[] = - { - ]b4_pact[ - }; - - /* YYDEFACT[S] -- default rule to reduce with in state S when YYTABLE - doesn't specify something else to do. Zero means the default is an - error. */ - const ]b4_int_type_for([b4_defact])[ - ]b4_parser_class_name[::yydefact_[] = - { - ]b4_defact[ - }; - - /* YYPGOTO[NTERM-NUM]. */ - const ]b4_int_type_for([b4_pgoto])[ - ]b4_parser_class_name[::yypgoto_[] = - { - ]b4_pgoto[ - }; - - /* YYDEFGOTO[NTERM-NUM]. */ - const ]b4_int_type_for([b4_defgoto])[ - ]b4_parser_class_name[::yydefgoto_[] = - { - ]b4_defgoto[ - }; - - /* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If - positive, shift that token. If negative, reduce the rule which - number is the opposite. If zero, do what YYDEFACT says. */ - const ]b4_int_type(b4_table_ninf, b4_table_ninf) b4_parser_class_name::yytable_ninf_ = b4_table_ninf[; - const ]b4_int_type_for([b4_table])[ - ]b4_parser_class_name[::yytable_[] = - { - ]b4_table[ - }; - - /* YYCHECK. */ - const ]b4_int_type_for([b4_check])[ - ]b4_parser_class_name[::yycheck_[] = - { - ]b4_check[ - }; - - /* STOS_[STATE-NUM] -- The (internal number of the) accessing - symbol of state STATE-NUM. */ - const ]b4_int_type_for([b4_stos])[ - ]b4_parser_class_name[::yystos_[] = - { - ]b4_stos[ - }; - -#if YYDEBUG - /* TOKEN_NUMBER_[YYLEX-NUM] -- Internal symbol number corresponding - to YYLEX-NUM. */ - const ]b4_int_type_for([b4_toknum])[ - ]b4_parser_class_name[::yytoken_number_[] = - { - ]b4_toknum[ - }; -#endif - - /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */ - const ]b4_int_type_for([b4_r1])[ - ]b4_parser_class_name[::yyr1_[] = - { - ]b4_r1[ - }; - - /* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */ - const ]b4_int_type_for([b4_r2])[ - ]b4_parser_class_name[::yyr2_[] = - { - ]b4_r2[ - }; - -#if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE - /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM. - First, the terminals, then, starting at \a yyntokens_, nonterminals. */ - const char* - const ]b4_parser_class_name[::yytname_[] = - { - ]b4_tname[ - }; -#endif - -#if YYDEBUG - /* YYRHS -- A `-1'-separated list of the rules' RHS. */ - const ]b4_parser_class_name[::rhs_number_type - ]b4_parser_class_name[::yyrhs_[] = - { - ]b4_rhs[ - }; - - /* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in - YYRHS. */ - const ]b4_int_type_for([b4_prhs])[ - ]b4_parser_class_name[::yyprhs_[] = - { - ]b4_prhs[ - }; - - /* YYRLINE[YYN] -- Source line where rule number YYN was defined. */ - const ]b4_int_type_for([b4_rline])[ - ]b4_parser_class_name[::yyrline_[] = - { - ]b4_rline[ - }; - - // Print the state stack on the debug stream. - void - ]b4_parser_class_name[::yystack_print_ () - { - *yycdebug_ << "Stack now"; - for (state_stack_type::const_iterator i = yystate_stack_.begin (); - i != yystate_stack_.end (); ++i) - *yycdebug_ << ' ' << *i; - *yycdebug_ << std::endl; - } - - // Report on the debug stream that the rule \a yyrule is going to be reduced. - void - ]b4_parser_class_name[::yy_reduce_print_ (int yyrule) - { - unsigned int yylno = yyrline_[yyrule]; - int yynrhs = yyr2_[yyrule]; - /* Print the symbols being reduced, and their result. */ - *yycdebug_ << "Reducing stack by rule " << yyrule - 1 - << " (line " << yylno << "):" << std::endl; - /* The symbols being reduced. */ - for (int yyi = 0; yyi < yynrhs; yyi++) - YY_SYMBOL_PRINT (" $" << yyi + 1 << " =", - yyrhs_[yyprhs_[yyrule] + yyi], - &]b4_rhs_value(yynrhs, yyi + 1)[, - &]b4_rhs_location(yynrhs, yyi + 1)[); - } -#endif // YYDEBUG - - /* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */ - ]b4_parser_class_name[::token_number_type - ]b4_parser_class_name[::yytranslate_ (int t) - { - static - const token_number_type - translate_table[] = - { - ]b4_translate[ - }; - if ((unsigned int) t <= yyuser_token_number_max_) - return translate_table[t]; - else - return yyundef_token_; - } - - const int ]b4_parser_class_name[::yyeof_ = 0; - const int ]b4_parser_class_name[::yylast_ = ]b4_last[; - const int ]b4_parser_class_name[::yynnts_ = ]b4_nterms_number[; - const int ]b4_parser_class_name[::yyempty_ = -2; - const int ]b4_parser_class_name[::yyfinal_ = ]b4_final_state_number[; - const int ]b4_parser_class_name[::yyterror_ = 1; - const int ]b4_parser_class_name[::yyerrcode_ = 256; - const int ]b4_parser_class_name[::yyntokens_ = ]b4_tokens_number[; - - const unsigned int ]b4_parser_class_name[::yyuser_token_number_max_ = ]b4_user_token_number_max[; - const ]b4_parser_class_name[::token_number_type ]b4_parser_class_name[::yyundef_token_ = ]b4_undef_token_number[; - -]b4_namespace_close[ - -]b4_epilogue -dnl -@output(b4_dir_prefix[]stack.hh@) -b4_copyright([Stack handling for Bison parsers in C++], - [2002, 2003, 2004, 2005, 2006, 2007, 2008])[ - -#ifndef BISON_STACK_HH -# define BISON_STACK_HH - -#include <deque> - -]b4_namespace_open[ - template <class T, class S = std::deque<T> > - class stack - { - public: - - // Hide our reversed order. - typedef typename S::reverse_iterator iterator; - typedef typename S::const_reverse_iterator const_iterator; - - stack () : seq_ () - { - } - - stack (unsigned int n) : seq_ (n) - { - } - - inline - T& - operator [] (unsigned int i) - { - return seq_[i]; - } - - inline - const T& - operator [] (unsigned int i) const - { - return seq_[i]; - } - - inline - void - push (const T& t) - { - seq_.push_front (t); - } - - inline - void - pop (unsigned int n = 1) - { - for (; n; --n) - seq_.pop_front (); - } - - inline - unsigned int - height () const - { - return seq_.size (); - } - - inline const_iterator begin () const { return seq_.rbegin (); } - inline const_iterator end () const { return seq_.rend (); } - - private: - - S seq_; - }; - - /// Present a slice of the top of a stack. - template <class T, class S = stack<T> > - class slice - { - public: - - slice (const S& stack, - unsigned int range) : stack_ (stack), - range_ (range) - { - } - - inline - const T& - operator [] (unsigned int i) const - { - return stack_[range_ - i]; - } - - private: - - const S& stack_; - unsigned int range_; - }; -]b4_namespace_close[ - -#endif // not BISON_STACK_HH[]dnl -] -m4_divert_pop(0) |