X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/6ad762a8c0c6e01078ec05b45c534f8c8cea3d90..bcbbf654863dd285b176a0f54a75a28c4bdac1d3:/data/lalr1.cc?ds=sidebyside diff --git a/data/lalr1.cc b/data/lalr1.cc index ba8ebcaa..17a8f22c 100644 --- a/data/lalr1.cc +++ b/data/lalr1.cc @@ -1,883 +1,1110 @@ -m4_divert(-1) # C++ skeleton for Bison -# Copyright (C) 2002 Free Software Foundation, Inc. -# This program is free software; you can redistribute it and/or modify +# Copyright (C) 2002-2012 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 2 of the License, or +# 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, write to the Free Software -# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA -# 02111-1307 USA - -m4_include([c.m4]) - -## ---------------- ## -## Default values. ## -## ---------------- ## - -# Stack parameters. -m4_define_default([b4_stack_depth_init], [200]) - -# Default Parser class name. -m4_define_default([b4_parser_class_name], [Parser]) - - - -## ----------------- ## -## Semantic Values. ## -## ----------------- ## - - -# b4_lhs_value([TYPE]) -# -------------------- -# Expansion of $$. -m4_define([b4_lhs_value], -[yyval[]m4_ifval([$1], [.$1])]) - - -# b4_rhs_value(RULE-LENGTH, NUM, [TYPE]) -# -------------------------------------- -# Expansion of $NUM, where the current rule has RULE-LENGTH -# symbols on RHS. -m4_define([b4_rhs_value], -[semantic_stack_@{m4_eval([$1 - $2])@}m4_ifval([$3], [.$3])]) +# along with this program. If not, see . -m4_define_default([b4_location_type], [Location]) +m4_include(b4_pkgdatadir/[c++.m4]) -# b4_lhs_location() -# ----------------- -# Expansion of @$. -m4_define([b4_lhs_location], -[yyloc]) +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]])]) -# b4_rhs_location(RULE-LENGTH, NUM) -# --------------------------------- -# Expansion of @NUM, where the current rule has RULE-LENGTH symbols -# on RHS. -m4_define([b4_rhs_location], -[location_stack_@{m4_eval([$1 - $2])@}]) - - -m4_define([b4_inherit], - [m4_ifdef([b4_root], - [: public b4_root -], - [])]) - -m4_define([b4_param], - [m4_ifdef([b4_root], - [, - const Param& param], - [])]) - -m4_define([b4_constructor], - [m4_ifdef([b4_root], - [b4_root (param), - ], - [])]) - +b4_percent_define_ifdef([[location_type]], [], + [# Backward compatibility. + m4_define([b4_location_constructors]) + m4_include(b4_pkgdatadir/[location.cc])]) +m4_include(b4_pkgdatadir/[stack.hh]) # We do want M4 expansion after # for CPP macros. m4_changecom() -m4_divert(0)dnl -@output @output_header_name@ -b4_copyright([C++ Skeleton parser for LALR(1) parsing with Bison], - [2002]) -#ifndef YYLSP_NEEDED -# define YYLSP_NEEDED +m4_divert_push(0)dnl +b4_defines_if( +[@output(b4_spec_defines_file@)@ +b4_copyright([Skeleton interface for Bison LALR(1) parsers in C++], + [2002-2012]) +[ +/** + ** \file ]b4_spec_defines_file[ + ** Define the ]b4_namespace_ref[::parser class. + */ -#include "stack.hh" -#include "location.hh" +/* C++ LALR(1) parser skeleton written by Akim Demaille. */ -#include -#include - -/* Using locations. */ -#define YYLSP_NEEDED b4_locations_flag - -b4_token_defines(b4_tokens) +]b4_cpp_guard_open([b4_spec_defines_file])[ -/* Copy the first part of user declarations. */ -b4_pre_prologue - -/* Line __line__ of __file__. */ -b4_syncline([@oline@], [@ofile@]) - -/* Enabling traces. */ -#ifndef YYDEBUG -# define YYDEBUG b4_debug -#endif +]b4_percent_code_get([[requires]])[ -/* Enabling verbose error message. */ -#ifndef YYERROR_VERBOSE -# define YYERROR_VERBOSE b4_error_verbose -#endif - -#ifndef YYSTYPE -m4_ifdef([b4_stype], -[b4_syncline([b4_stype_line], [b4_filename]) -typedef union b4_stype yystype; -/* Line __line__ of __file__. */ -b4_syncline([@oline@], [@ofile@])], -[typedef int yystype;]) -# define YYSTYPE yystype -#endif - -/* Copy the second part of user declarations. */ -b4_post_prologue - -/* Line __line__ of __file__. */ -b4_syncline([@oline@], [@ofile@]) -#ifndef YYLLOC_DEFAULT -# define YYLLOC_DEFAULT(Current, Rhs, N) \ - Current.last_line = Rhs[[N]].last_line; \ - Current.last_column = Rhs[[N]].last_column; -#endif - -namespace yy -{ - class b4_parser_class_name; +#include +#include +#include "stack.hh" +]b4_percent_define_ifdef([[location_type]], [], + [[#include "location.hh"]])[ - template < typename P > - struct Traits - { - }; +]b4_YYDEBUG_define[ - template < > - struct Traits< b4_parser_class_name > - { - typedef b4_int_type_for([b4_translate]) TokenNumberType; - typedef b4_int_type_for([b4_rhs]) RhsNumberType; - typedef int StateType; - typedef yystype SemanticType; - typedef b4_location_type LocationType; - }; -} +]b4_namespace_open[ -namespace yy -{ - class b4_parser_class_name b4_inherit + /// A Bison parser. + class ]b4_parser_class_name[ { public: - - typedef Traits< b4_parser_class_name >::TokenNumberType TokenNumberType; - typedef Traits< b4_parser_class_name >::RhsNumberType RhsNumberType; - typedef Traits< b4_parser_class_name >::StateType StateType; - typedef Traits< b4_parser_class_name >::SemanticType SemanticType; - typedef Traits< b4_parser_class_name >::LocationType LocationType; - - typedef Stack< StateType > StateStack; - typedef Stack< SemanticType > SemanticStack; - typedef Stack< LocationType > LocationStack; - -#if YYLSP_NEEDED - b4_parser_class_name (bool debug, - LocationType initlocation[]b4_param) : - b4_constructor[]debug_ (debug), - cdebug_ (std::cerr), - initlocation_ (initlocation) + /// Symbol semantic values. +#ifndef ]b4_api_PREFIX[STYPE +]m4_ifdef([b4_stype], +[ union semantic_type + { +b4_user_stype + };], +[m4_if(b4_tag_seen_flag, 0, +[[ typedef int semantic_type;]], +[[ typedef ]b4_api_PREFIX[STYPE semantic_type;]])])[ #else - b4_parser_class_name (bool debug[]b4_param) : - b4_constructor[]debug_ (debug), - cdebug_ (std::cerr) + typedef ]b4_api_PREFIX[STYPE semantic_type; #endif + /// Symbol locations. + typedef ]b4_percent_define_get([[location_type]], + [[location]])[ location_type; + /// Tokens. + struct token { - } + ]b4_token_enums(b4_tokens)[ + }; + /// Token type. + typedef token::yytokentype token_type; - virtual ~b4_parser_class_name () - { - } + /// 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 (); - private: - - virtual void lex_ (); - virtual void error_ (); - virtual void print_ (); - - /* Stacks. */ - StateStack state_stack_; - SemanticStack semantic_stack_; - LocationStack location_stack_; - - /* Tables. */ - static const b4_int_type_for([b4_pact]) pact_[[]]; - static const b4_int_type_for([b4_pact]) pact_ninf_; - static const b4_int_type_for([b4_defact]) defact_[[]]; - static const b4_int_type_for([b4_pgoto]) pgoto_[[]]; - static const b4_int_type_for([b4_defgoto]) defgoto_[[]]; - static const b4_int_type_for([b4_table]) table_[[]]; - static const b4_int_type_for([b4_table]) table_ninf_; - static const b4_int_type_for([b4_check]) check_[[]]; - static const b4_int_type_for([b4_r1]) r1_[[]]; - static const b4_int_type_for([b4_r2]) r2_[[]]; - -#if YYDEBUG || YYERROR_VERBOSE - static const char* const name_[[]]; +#if ]b4_api_PREFIX[DEBUG + /// 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 - /* More tables, for debugging. */ -#if YYDEBUG - static const RhsNumberType rhs_[[]]; - static const b4_int_type_for([b4_prhs]) prhs_[[]]; - static const b4_int_type_for([b4_rline]) rline_[[]]; - static const b4_int_type_for([b4_stos]) stos_[[]]; - static const b4_int_type_for([b4_toknum]) token_number_[[]]; + 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, int tok); + +#if ]b4_api_PREFIX[DEBUG + /// \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 - /* Even more tables. */ - static inline TokenNumberType translate_ (int token); - /* Constants. */ - static const int eof_; - /* LAST_ -- Last index in TABLE_. */ - static const int last_; - static const int nnts_; - static const int empty_; - static const int final_; - static const int terror_; - static const int errcode_; - static const int ntokens_; - static const int initdepth_; - static const unsigned user_token_number_max_; - static const TokenNumberType undef_token_; - - /* State. */ - int n_; - int len_; - int state_; + /// State numbers. + typedef int state_type; + /// State stack type. + typedef stack state_stack_type; + /// Semantic value stack type. + typedef stack semantic_stack_type; + /// location stack type. + typedef stack 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_; + + /// Whether the given \c yypact_ value indicates a defaulted state. + /// \param yyvalue the value to check + static bool yy_pact_value_is_default_ (int yyvalue); + + /// Whether the given \c yytable_ value indicates a syntax error. + /// \param yyvalue the value to check + static bool yy_table_value_is_error_ (int yyvalue); + + /// 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 reduction number. + /// 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_[]; ]b4_error_verbose_if([ + + /// Convert the symbol name \a n to a form suitable for a diagnostic. + static std::string yytnamerr_ (const char *n);])[ + +]b4_token_table_if([], [[#if ]b4_api_PREFIX[DEBUG]])[ + /// For a symbol, its name in clear. + static const char* const yytname_[]; +]b4_token_table_if([[#if ]b4_api_PREFIX[DEBUG]])[ + /// 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 debug_; - std::ostream &cdebug_; - - /* Lookahead and lookahead in internal form. */ - int looka_; - int ilooka_; + int yydebug_; + std::ostream* yycdebug_; +#endif - /* Message. */ - std::string message; + /// Convert a scanner token number \a t to a symbol number. + token_number_type yytranslate_ (int t); - /* Semantic value and location of lookahead token. */ - SemanticType value; - LocationType location; + /// \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); - /* @@$ and $$. */ - SemanticType yyval; - LocationType yyloc; + /// Pop \a n symbols the three stacks. + inline void yypop_ (unsigned int n = 1); - /* Initial location. */ - LocationType initlocation_; + /* 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[ }; -} - -#endif /* ! defined YYLSP_NEEDED */ -dnl -@output @output_parser_name@ -b4_copyright([C++ Skeleton parser for LALR(1) parsing with Bison], - [2002]) +]b4_namespace_close[ -#include @output_header_name@ +]b4_percent_define_flag_if([[global_tokens_and_yystype]], +[b4_token_defines(b4_tokens) -/* Enable debugging if requested. */ -#if YYDEBUG -# define YYCDEBUG if (debug_) cdebug_ -#else /* !YYDEBUG */ -# define YYCDEBUG if (0) cdebug_ -#endif /* !YYDEBUG */ - -int -yy::b4_parser_class_name::parse () -{ - int nerrs = 0; - int errstatus = 0; - - /* Initialize stack. */ - state_stack_ = StateStack (0); - semantic_stack_ = SemanticStack (1); - location_stack_ = LocationStack (1); - - /* Start. */ - state_ = 0; - looka_ = empty_; -#if YYLSP_NEEDED - location = initlocation_; +#ifndef ]b4_api_PREFIX[STYPE + /* Redirection for backward compatibility. */ +# define ]b4_api_PREFIX[STYPE b4_namespace_ref::b4_parser_class_name::semantic_type +#endif +])[ +]b4_percent_code_get([[provides]])[ +]b4_cpp_guard_close([b4_spec_defines_file]) +])dnl +@output(b4_parser_file_name@)@ +b4_copyright([Skeleton implementation for Bison LALR(1) parsers in C++], + [2002-2012]) +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[ + +]b4_null_define[ + +#ifndef YY_ +# if defined YYENABLE_NLS && YYENABLE_NLS +# if ENABLE_NLS +# include /* FIXME: INFRINGES ON USER NAME SPACE */ +# define YY_(msgid) dgettext ("bison-runtime", msgid) +# endif +# endif +# ifndef YY_ +# define YY_(msgid) msgid +# endif #endif - YYCDEBUG << "Starting parse" << std::endl; - /* New state. */ - yynewstate: - state_stack_.push (state_); - YYCDEBUG << "Entering state " << state_ << std::endl; - goto yybackup; +#define YYRHSLOC(Rhs, K) ((Rhs)[K]) +]b4_yylloc_default_define[ - /* Backup. */ - yybackup: +/* Suppress unused-variable warnings by "using" E. */ +#define YYUSE(e) ((void) (e)) - /* Try to take a decision without lookahead. */ - n_ = pact_[[state_]]; - if (n_ == pact_ninf_) - goto yydefault; +/* Enable debugging if requested. */ +#if ]b4_api_PREFIX[DEBUG + +/* 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 /* !]b4_api_PREFIX[DEBUG */ + +# define YYCDEBUG if (false) std::cerr +# define YY_SYMBOL_PRINT(Title, Type, Value, Location) +# define YY_REDUCE_PRINT(Rule) +# define YY_STACK_PRINT() + +#endif /* !]b4_api_PREFIX[DEBUG */ + +#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[]b4_error_verbose_if([[ + + /* 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; + } +]])[ + + /// Build a parser object. + ]b4_parser_class_name::b4_parser_class_name[ (]b4_parse_param_decl[)]m4_ifset([b4_parse_param], [ + :])[ +#if ]b4_api_PREFIX[DEBUG + ]m4_ifset([b4_parse_param], [ ], [ :])[yydebug_ (false), + yycdebug_ (&std::cerr)]m4_ifset([b4_parse_param], [,])[ +#endif]b4_parse_param_cons[ + { + } - /* Read a lookahead token. */ - if (looka_ == empty_) - { - YYCDEBUG << "Reading a token: "; - lex_ (); - } + ]b4_parser_class_name::~b4_parser_class_name[ () + { + } - /* Convert token to internal form. */ - if (looka_ <= 0) - { - looka_ = eof_; - ilooka_ = 0; - YYCDEBUG << "Now at end of input." << std::endl; - } - else - { - ilooka_ = translate_ (looka_); -#if YYDEBUG - if (debug_) - { - YYCDEBUG << "Next token is " << looka_ - << " (" << name_[[ilooka_]]; - print_ (); - YYCDEBUG << ')' << std::endl; - } +#if ]b4_api_PREFIX[DEBUG + /*--------------------------------. + | 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); + std::ostream& yyo = debug_stream (); + std::ostream& yyoutput = yyo; + YYUSE (yyoutput); + 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 - } - n_ += ilooka_; - if (n_ < 0 || last_ < n_ || check_[[n_]] != ilooka_) - goto yydefault; + 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 ]b4_api_PREFIX[DEBUG + std::ostream& + ]b4_parser_class_name[::debug_stream () const + { + return *yycdebug_; + } - /* Reduce or error. */ - n_ = table_[[n_]]; - if (n_ < 0) - { - if (n_ == table_ninf_) - goto yyerrlab; - else - { - n_ = -n_; - goto yyreduce; - } - } - else if (n_ == 0) - goto yyerrlab; - - /* Accept? */ - if (n_ == final_) - goto yyacceptlab; - - /* Shift the lookahead token. */ - YYCDEBUG << "Shifting token " << looka_ - << " (" << name_[[ilooka_]] << "), "; - - /* Discard the token being shifted unless it is eof. */ - if (looka_ != eof_) - looka_ = empty_; - - semantic_stack_.push (value); - location_stack_.push (location); - - /* Count tokens shifted since error; after three, turn off error - status. */ - if (errstatus) - --errstatus; - - state_ = n_; - goto yynewstate; - - /* Default action. */ - yydefault: - n_ = defact_[[state_]]; - if (n_ == 0) - goto yyerrlab; - goto yyreduce; - - /* Reduce. */ - yyreduce: - len_ = r2_[[n_]]; - if (len_) - { - yyval = semantic_stack_[[len_ - 1]]; - yyloc = location_stack_[[len_ - 1]]; - } - else - { - yyval = semantic_stack_[[0]]; - yyloc = location_stack_[[0]]; - } + void + ]b4_parser_class_name[::set_debug_stream (std::ostream& o) + { + yycdebug_ = &o; + } -#if YYDEBUG - if (debug_) - { - YYCDEBUG << "Reducing via rule " << n_ - 1 - << " (line " << rline_[[n_]] << "), "; - for (b4_int_type_for([b4_prhs]) i = prhs_[[n_]]; - 0 <= rhs_[[i]]; ++i) - YYCDEBUG << name_[[rhs_[i]]] << ' '; - YYCDEBUG << "-> " << name_[[r1_[n_]]] << std::endl; - } + + ]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 - if (len_) - { - Slice< LocationType, LocationStack > slice (location_stack_, len_); - YYLLOC_DEFAULT (yyloc, slice, len_); - } + inline bool + ]b4_parser_class_name[::yy_pact_value_is_default_ (int yyvalue) + { + return yyvalue == yypact_ninf_; + } - switch (n_) - { - b4_actions - } + inline bool + ]b4_parser_class_name[::yy_table_value_is_error_ (int yyvalue) + { + return yyvalue == yytable_ninf_; + } -/* Line __line__ of __file__. */ -b4_syncline([@oline@], [@ofile@]) + int + ]b4_parser_class_name[::parse () + { + /// Lookahead and lookahead in internal form. + int yychar = yyempty_; + int yytoken = 0; - state_stack_.pop (len_); - semantic_stack_.pop (len_); - location_stack_.pop (len_); + /* 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[3]; + + /// $$. + 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 (yy_pact_value_is_default_ (yyn)) + goto yydefault; + + /* Read a lookahead token. */ + if (yychar == yyempty_) + { + YYCDEBUG << "Reading a token: "; + yychar = ]b4_c_function_call([yylex], [int], + [b4_api_PREFIX[STYPE*], [&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 (yy_table_value_is_error_ (yyn)) + 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]; -#if YYDEBUG - if (debug_) { - YYCDEBUG << "state stack now"; - for (StateStack::ConstIterator i = state_stack_.begin (); - i != state_stack_.end (); ++i) - YYCDEBUG << ' ' << *i; - YYCDEBUG << std::endl; + slice slice (yylocation_stack_, yylen); + YYLLOC_DEFAULT (yyloc, slice, yylen); } -#endif - - semantic_stack_.push (yyval); - location_stack_.push (yyloc); - - /* Shift the result of the reduction. */ - n_ = r1_[[n_]]; - state_ = pgoto_[[n_ - ntokens_]] + state_stack_[[0]]; - if (0 <= state_ && state_ <= last_ && check_[[state_]] == state_stack_[[0]]) - state_ = table_[[state_]]; - else - state_ = defgoto_[[n_ - ntokens_]]; - goto yynewstate; - - /* Report and recover from errors. This is very incomplete. */ - yyerrlab: - /* If not already recovering from an error, report this error. */ - if (!errstatus) - { - ++nerrs; + YY_REDUCE_PRINT (yyn); + 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. In the case of YYABORT or YYACCEPT, an incorrect + destructor might then be invoked immediately. In the case of + YYERROR, 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); + + 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: + /* Make sure we have latest lookahead translation. See comments at + user semantic actions for why this is necessary. */ + yytoken = yytranslate_ (yychar); + + /* If not already recovering from an error, report this error. */ + if (!yyerrstatus_) + { + ++yynerrs_; + if (yychar == yyempty_) + yytoken = yyempty_; + error (yylloc, yysyntax_error_ (yystate, yytoken)); + } + + yyerror_range[1] = yylloc; + if (yyerrstatus_ == 3) + { + /* If just tried and failed to reuse lookahead token after an + error, discard it. */ -#if YYERROR_VERBOSE - n_ = pact_[[state_]]; - if (pact_ninf_ < n_ && n_ < last_) - { - message = "parse error, unexpected "; - message += name_[[ilooka_]]; + if (yychar <= yyeof_) { - int count = 0; - for (int x = (n_ < 0 ? -n_ : 0); x < ntokens_ + nnts_; ++x) - if (check_[[x + n_]] == x && x != terror_) - ++count; - if (count < 5) - { - count = 0; - for (int x = (n_ < 0 ? -n_ : 0); x < ntokens_ + nnts_; ++x) - if (check_[[x + n_]] == x && x != terror_) - { - message += (!count++) ? ", expecting " : " or "; - message += name_[[x]]; - } - } + /* Return failure if at end of input. */ + if (yychar == yyeof_) + YYABORT; } - } - else -#endif - message = "parse error"; - error_ (); - } - goto yyerrlab1; - - /* Error raised explicitly by an action. */ - yyerrlab1: - if (errstatus == 3) - { - /* If just tried and failed to reuse lookahead token after an - error, discard it. */ - - /* Return failure if at end of input. */ - if (looka_ == eof_) - goto yyabortlab; - YYCDEBUG << "Discarding token " << looka_ - << " (" << name_[[ilooka_]] << ")." << std::endl; - looka_ = empty_; - } - - /* Else will try to reuse lookahead token after shifting the error - token. */ - - errstatus = 3; - - for (;;) - { - n_ = pact_[[state_]]; - if (n_ != pact_ninf_) + 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[1] = 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 (!yy_pact_value_is_default_ (yyn)) { - n_ += terror_; - if (0 <= n_ && n_ <= last_ && check_[[n_]] == terror_) + yyn += yyterror_; + if (0 <= yyn && yyn <= yylast_ && yycheck_[yyn] == yyterror_) { - n_ = table_[[n_]]; - if (0 < n_) + yyn = yytable_[yyn]; + if (0 < yyn) break; } } - /* Pop the current state because it cannot handle the error token. */ - if (!state_stack_.height ()) - goto yyabortlab; - -#if YYDEBUG - if (debug_) - { - if (stos_[[state_]] < ntokens_) - { - YYCDEBUG << "Error: popping token " - << token_number_[[stos_[state_]]] - << " (" << name_[[stos_[state_]]]; -# ifdef YYPRINT - YYPRINT (stderr, token_number_[[stos_[state_]]], - semantic_stack_.top ()); -# endif - YYCDEBUG << ')' << std::endl; - } - else - { - YYCDEBUG << "Error: popping nonterminal (" - << name_[[stos_[state_]]] << ')' << std::endl; - } - } -#endif - - state_ = (state_stack_.pop (), state_stack_[[0]]); - semantic_stack_.pop (); - location_stack_.pop ();; - -#if YYDEBUG - if (debug_) - { - YYCDEBUG << "Error: state stack now"; - for (StateStack::ConstIterator i = state_stack_.begin (); - i != state_stack_.end (); ++i) - YYCDEBUG << ' ' << *i; - YYCDEBUG << std::endl; - } -#endif - } + /* Pop the current state because it cannot handle the error token. */ + if (yystate_stack_.height () == 1) + YYABORT; + + yyerror_range[1] = yylocation_stack_[0]; + yydestruct_ ("Error: popping", + yystos_[yystate], + &yysemantic_stack_[0], &yylocation_stack_[0]); + yypop_ (); + yystate = yystate_stack_[0]; + YY_STACK_PRINT (); + } + + 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); + 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_) + { + /* 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, + &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_ (]dnl +b4_error_verbose_if([int yystate, int yytoken], + [int, int])[) + {]b4_error_verbose_if([[ + std::string yyres; + // Number of reported tokens (one for the "unexpected", one per + // "expected"). + size_t yycount = 0; + // Its maximum. + enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 }; + // Arguments of yyformat. + char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM]; + + /* 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 yytoken) 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. + - 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_) + { + yyarg[yycount++] = yytname_[yytoken]; + int yyn = yypact_[yystate]; + if (!yy_pact_value_is_default_ (yyn)) + { + /* 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_; + for (int yyx = yyxbegin; yyx < yyxend; ++yyx) + if (yycheck_[yyx + yyn] == yyx && yyx != yyterror_ + && !yy_table_value_is_error_ (yytable_[yyx + yyn])) + { + if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM) + { + yycount = 1; + break; + } + else + yyarg[yycount++] = yytname_[yyx]; + } + } + } + + char const* yyformat = YY_NULL; + 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_ + } + + // Argument number. + size_t yyi = 0; + for (char const* yyp = yyformat; *yyp; ++yyp) + if (yyp[0] == '%' && yyp[1] == 's' && yyi < yycount) + { + yyres += yytnamerr_ (yyarg[yyi++]); + ++yyp; + } + else + yyres += *yyp; + return yyres;]], [[ + return YY_("syntax error");]])[ + } - if (n_ == final_) - goto yyacceptlab; - YYCDEBUG << "Shifting error token, "; + /* 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[ + }; - semantic_stack_.push (value); - location_stack_.push (location); + /* YYDEFACT[S] -- default reduction number in state S. Performed 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[ + }; - state_ = n_; - goto yynewstate; + /* YYPGOTO[NTERM-NUM]. */ + const ]b4_int_type_for([b4_pgoto])[ + ]b4_parser_class_name[::yypgoto_[] = + { + ]b4_pgoto[ + }; - /* Accept. */ - yyacceptlab: - return 0; + /* YYDEFGOTO[NTERM-NUM]. */ + const ]b4_int_type_for([b4_defgoto])[ + ]b4_parser_class_name[::yydefgoto_[] = + { + ]b4_defgoto[ + }; - /* Abort. */ - yyabortlab: - return 1; -} + /* 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 YYTABLE_NINF_, syntax error. */ + 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[ + }; -void -yy::b4_parser_class_name::lex_ () -{ -#if YYLSP_NEEDED - looka_ = yylex (&value, &location); -#else - looka_ = yylex (&value); -#endif -} - -/* YYPACT[[STATE-NUM]] -- Index in YYTABLE of the portion describing - STATE-NUM. */ -const b4_int_type_for([b4_pact]) yy::b4_parser_class_name::pact_ninf_ = b4_pact_ninf; -const b4_int_type_for([b4_pact]) -yy::b4_parser_class_name::pact_[[]] = -{ - 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]) -yy::b4_parser_class_name::defact_[[]] = -{ - b4_defact -}; - -/* YYPGOTO[[NTERM-NUM]]. */ -const b4_int_type_for([b4_pgoto]) -yy::b4_parser_class_name::pgoto_[[]] = -{ - b4_pgoto -}; - -/* YYDEFGOTO[[NTERM-NUM]]. */ -const b4_int_type_for([b4_defgoto]) -yy::b4_parser_class_name::defgoto_[[]] = -{ - 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_for([b4_table]) yy::b4_parser_class_name::table_ninf_ = b4_table_ninf; -const b4_int_type_for([b4_table]) -yy::b4_parser_class_name::table_[[]] = -{ - b4_table -}; - -/* YYCHECK. */ -const b4_int_type_for([b4_check]) -yy::b4_parser_class_name::check_[[]] = -{ - b4_check -}; - -#if YYDEBUG -/* STOS_[[STATE-NUM]] -- The (internal number of the) accessing - symbol of state STATE-NUM. */ -const b4_int_type_for([b4_stos]) -yy::b4_parser_class_name::stos_[[]] = -{ - b4_stos -}; - -/* TOKEN_NUMBER_[[YYLEX-NUM]] -- Internal token number corresponding - to YYLEX-NUM. */ -const b4_int_type_for([b4_toknum]) -yy::b4_parser_class_name::token_number_[[]] = -{ - b4_toknum -}; -#endif + /* YYCHECK. */ + const ]b4_int_type_for([b4_check])[ + ]b4_parser_class_name[::yycheck_[] = + { + ]b4_check[ + }; -/* YYR1[[YYN]] -- Symbol number of symbol that rule YYN derives. */ -const b4_int_type_for([b4_r1]) -yy::b4_parser_class_name::r1_[[]] = -{ - b4_r1 -}; - -/* YYR2[[YYN]] -- Number of symbols composing right hand side of rule YYN. */ -const b4_int_type_for([b4_r2]) -yy::b4_parser_class_name::r2_[[]] = -{ - b4_r2 -}; - -#if YYDEBUG || YYERROR_VERBOSE -/* YYTNAME[[SYMBOL-NUM]] -- String name of the symbol SYMBOL-NUM. - First, the terminals, then, starting at YYNTOKENS, nonterminals. */ -const char* -const yy::b4_parser_class_name::name_[[]] = -{ - b4_tname -}; -#endif + /* 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 -/* YYRHS -- A `-1'-separated list of the rules' RHS. */ -const yy::b4_parser_class_name::RhsNumberType -yy::b4_parser_class_name::rhs_[[]] = -{ - b4_rhs -}; - -/* YYPRHS[[YYN]] -- Index of the first RHS symbol of rule number YYN in - YYRHS. */ -const b4_int_type_for([b4_prhs]) -yy::b4_parser_class_name::prhs_[[]] = -{ - b4_prhs -}; - -/* YYRLINE[[YYN]] -- source line where rule number YYN was defined. */ -const b4_int_type_for([b4_rline]) -yy::b4_parser_class_name::rline_[[]] = -{ - b4_rline -}; +#if ]b4_api_PREFIX[DEBUG + /* 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 -/* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */ -yy::b4_parser_class_name::TokenNumberType -yy::b4_parser_class_name::translate_ (int token) -{ - static - const TokenNumberType - translate_[[]] = + /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */ + const ]b4_int_type_for([b4_r1])[ + ]b4_parser_class_name[::yyr1_[] = { - b4_translate + ]b4_r1[ }; - if ((unsigned) token <= user_token_number_max_) - return translate_[[token]]; - else - return undef_token_; -} - -const int yy::b4_parser_class_name::eof_ = 0; -const int yy::b4_parser_class_name::last_ = b4_last; -const int yy::b4_parser_class_name::nnts_ = b4_nterms_number; -const int yy::b4_parser_class_name::empty_ = -2; -const int yy::b4_parser_class_name::final_ = b4_final_state_number; -const int yy::b4_parser_class_name::terror_ = 1; -const int yy::b4_parser_class_name::errcode_ = 256; -const int yy::b4_parser_class_name::ntokens_ = b4_tokens_number; -const int yy::b4_parser_class_name::initdepth_ = b4_stack_depth_init; - -const unsigned yy::b4_parser_class_name::user_token_number_max_ = b4_user_token_number_max; -const yy::b4_parser_class_name::TokenNumberType yy::b4_parser_class_name::undef_token_ = b4_undef_token_number; - -b4_epilogue -dnl -@output stack.hh -b4_copyright([2002]) - -#ifndef BISON_STACK_HH -# define BISON_STACK_HH - -#include - -namespace yy -{ - template < class T, class S = std::deque< T > > - class Stack - { - public: - - typedef typename S::iterator Iterator; - typedef typename S::const_iterator ConstIterator; - - Stack () : seq_ () - { - } - - Stack (unsigned n) : seq_ (n) - { - } - - inline - T& - operator [[]] (unsigned index) - { - return seq_[[index]]; - } - - inline - const T& - operator [[]] (unsigned index) const - { - return seq_[[index]]; - } - - inline - void - push (const T& t) - { - seq_.push_front (t); - } - - inline - void - pop (unsigned n = 1) - { - for (; n; --n) - seq_.pop_front (); - } - inline - unsigned - height () const - { - return seq_.size (); - } - - inline ConstIterator begin () const { return seq_.begin (); } - inline ConstIterator end () const { return seq_.end (); } - - private: - - S seq_; + /* 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[ }; - template < class T, class S = Stack< T > > - class Slice +]b4_token_table_if([], [[#if ]b4_api_PREFIX[DEBUG]])[ + /* 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_[] = { - public: - - Slice (const S& stack, - unsigned range) : stack_ (stack), - range_ (range) - { - } - - inline - const T& - operator [[]] (unsigned index) const - { - return stack_[[range_ - index]]; - } - - private: - - const S& stack_; - unsigned range_; + ]b4_tname[ }; -} - -#endif // not BISON_STACK_HH -dnl -@output location.hh -b4_copyright([2002]) -#ifndef BISON_LOCATION_HH -# define BISON_LOCATION_HH +]b4_token_table_if([[#if ]b4_api_PREFIX[DEBUG]])[ + /* YYRHS -- A `-1'-separated list of the rules' RHS. */ + const ]b4_parser_class_name[::rhs_number_type + ]b4_parser_class_name[::yyrhs_[] = + { + ]b4_rhs[ + }; -namespace yy -{ - struct Position + /* 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_[] = { - int line; - int column; + ]b4_prhs[ }; - struct Location + /* YYRLINE[YYN] -- Source line where rule number YYN was defined. */ + const ]b4_int_type_for([b4_rline])[ + ]b4_parser_class_name[::yyrline_[] = { - Position first; - Position last; + ]b4_rline[ }; -} -#endif // not BISON_LOCATION_HH + // 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 // ]b4_api_PREFIX[DEBUG + + /* 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 +m4_divert_pop(0)