X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/2a4647a32f3de7eda80133370b05cea9f72e5761..5422d56a718805a2470558808355e04182a12d65:/data/lalr1.cc?ds=sidebyside diff --git a/data/lalr1.cc b/data/lalr1.cc index 91bc2ec4..801f5904 100644 --- a/data/lalr1.cc +++ b/data/lalr1.cc @@ -1,62 +1,59 @@ -m4_divert(-1) - # C++ skeleton for Bison -# Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc. +# Copyright (C) 2002-2011 Free Software Foundation, Inc. -# This program is free software; you can redistribute it and/or modify +# 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., 51 Franklin Street, Fifth Floor, Boston, MA -# 02110-1301 USA +# along with this program. If not, see . m4_include(b4_pkgdatadir/[c++.m4]) -m4_include(b4_pkgdatadir/[location.cc]) + +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_percent_define_ifdef([[location_type]], [], + [# 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(0)dnl -m4_if(b4_defines_flag, 0, [], -[@output @output_header_name@ -b4_copyright([C++ Skeleton parser for LALR(1) parsing with Bison], - [2002, 2003, 2004, 2005]) +m4_divert_push(0)dnl +b4_defines_if( +[@output(b4_spec_defines_file@)@ +b4_copyright([Skeleton interface for Bison LALR(1) parsers in C++], + [2002-2011]) dnl FIXME: This is wrong, we want computed header guards. -dnl FIXME: I do not know why the macros are missing now. :( [ +/* C++ LALR(1) parser skeleton written by Akim Demaille. */ + #ifndef PARSER_HEADER_H # define PARSER_HEADER_H +]b4_percent_code_get([[requires]])[ + #include #include #include "stack.hh" - -namespace yy -{ - class position; - class location; -} - -/* First part of user declarations. */ -]b4_pre_prologue[ - -]/* Line __line__ of lalr1.cc. */ -b4_syncline([@oline@], [@ofile@])[ - -]dnl Include location.hh here: it might depend on headers included above. -[#include "location.hh" +]b4_percent_define_ifdef([[location_type]], [], + [[#include "location.hh"]])[ /* Enabling traces. */ #ifndef YYDEBUG -# define YYDEBUG ]b4_debug[ +# define YYDEBUG ]b4_debug_flag[ #endif /* Enabling verbose error messages. */ @@ -64,7 +61,7 @@ b4_syncline([@oline@], [@ofile@])[ # undef YYERROR_VERBOSE # define YYERROR_VERBOSE 1 #else -# define YYERROR_VERBOSE ]b4_error_verbose[ +# define YYERROR_VERBOSE ]b4_error_verbose_flag[ #endif /* Enabling the token table. */ @@ -72,66 +69,45 @@ b4_syncline([@oline@], [@ofile@])[ # 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 - -namespace yy -{ +]b4_namespace_open[ /// A Bison parser. class ]b4_parser_class_name[ { public: /// Symbol semantic values. -#if ! defined (YYSTYPE) +#ifndef YYSTYPE ]m4_ifdef([b4_stype], -[b4_syncline([b4_stype_line], [b4_file_name]) - union semantic_type b4_stype; -/* Line __line__ of lalr1.cc. */ -b4_syncline([@oline@], [@ofile@])], -[ typedef int semantic_type;])[ +[ 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_location_type[ location_type; + 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; /// Build a parser object. - ]b4_parser_class_name[ (]b4_parse_param_decl[) : - yydebug_ (false), - yycdebug_ (&std::cerr)]b4_parse_param_cons[ - { - } - - virtual ~]b4_parser_class_name[ () - { - } + ]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. @@ -143,6 +119,7 @@ b4_syncline([@oline@], [@ofile@])], 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. @@ -152,19 +129,25 @@ b4_syncline([@oline@], [@ofile@])], /// Generate an error message. /// \param state the state where the error occurred. - /// \param tok the look-ahead token. - virtual std::string yysyntax_error_ (int yystate]dnl -b4_error_verbose_if([, int tok])[); + /// \param tok the lookahead token. + virtual std::string yysyntax_error_ (int yystate, 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 yysymprint_ (int yytype, - const semantic_type* yyvaluep, - const location_type* yylocationp); -#endif /* ! YYDEBUG */ + virtual void yy_symbol_print_ (int yytype, + const semantic_type* yyvaluep, + const location_type* yylocationp); +#endif /// State numbers. @@ -183,6 +166,14 @@ b4_error_verbose_if([, int tok])[); /// 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. */ @@ -190,7 +181,7 @@ b4_error_verbose_if([, int tok])[); 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. + /// 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_[]; @@ -219,12 +210,10 @@ b4_error_verbose_if([, int tok])[); #if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE /// For a symbol, its name in clear. static const char* const yytname_[]; -#endif +#endif]b4_error_verbose_if([ -#if YYERROR_VERBOSE /// Convert the symbol name \a n to a form suitable for a diagnostic. - virtual std::string yytnamerr_ (const char *n); -#endif + static std::string yytnamerr_ (const char *n);])[ #if YYDEBUG /// A type to store symbol numbers and -1. @@ -238,13 +227,17 @@ b4_error_verbose_if([, int tok])[); /// 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 yyreduce_print_ (int r); + 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 to a symbol number. - inline token_number_type yytranslate_ (int token); + /// 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. @@ -252,9 +245,9 @@ b4_error_verbose_if([, int tok])[); /// \param yyvaluep Its semantic value. /// \param yylocationp Its location. inline void yydestruct_ (const char* yymsg, - int yytype, - semantic_type* yyvaluep, - location_type* yylocationp); + int yytype, + semantic_type* yyvaluep, + location_type* yylocationp); /// Pop \a n symbols the three stacks. inline void yypop_ (unsigned int n = 1); @@ -271,44 +264,43 @@ b4_error_verbose_if([, int tok])[); static const int yyntokens_; static const unsigned int yyuser_token_number_max_; static const token_number_type yyundef_token_; - - /* Debugging. */ - int yydebug_; - std::ostream* yycdebug_; - ]b4_parse_param_vars[ }; -} +]b4_namespace_close[ -]m4_ifset([b4_global_tokens_and_yystype], +]b4_percent_define_flag_if([[global_tokens_and_yystype]], [b4_token_defines(b4_tokens) #ifndef YYSTYPE - /* Redirection for backward compatibility. */ -# define YYSTYPE yy::b4_parser_class_name::semantic_type + /* Redirection for backward compatibility. */ +# define YYSTYPE b4_namespace_ref::b4_parser_class_name::semantic_type #endif -])[ -#endif /* ! defined PARSER_HEADER_H */] +]) +b4_percent_code_get([[provides]])[]dnl + +[#endif /* ! defined PARSER_HEADER_H */] ])dnl -@output @output_parser_name@ -b4_copyright([C++ Skeleton parser for LALR(1) parsing with Bison], - [2002, 2003, 2004, 2005]) -m4_if(b4_prefix[], [yy], [], +@output(b4_parser_file_name@)@ +b4_copyright([Skeleton implementation for Bison LALR(1) parsers in C++], + [2002-2011]) +b4_percent_code_get([[top]])[]dnl +m4_if(b4_prefix, [yy], [], [ // Take the name prefix into account. -#define yylex b4_prefix[]lex]) -m4_if(b4_defines_flag, 0, [], -[ -#include @output_header_name@])[ +#define yylex b4_prefix[]lex])[ -/* User implementation prologue. */ -]b4_post_prologue[ +/* First part of user declarations. */ +]b4_user_pre_prologue -]/* Line __line__ of lalr1.cc. */ -b4_syncline([@oline@], [@ofile@])[ +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 +[#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) @@ -319,23 +311,41 @@ b4_syncline([@oline@], [@ofile@])[ # endif #endif -/* Suppress unused-variable warnings by "using" E. */ -#define YYUSE(e) do {;} while (false && (e)) +/* 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). */ -/* A pseudo ostream that takes yydebug_ into account. */ -# define YYCDEBUG \ - for (bool yydebugcond_ = yydebug_; yydebugcond_; yydebugcond_ = false) \ - (*yycdebug_) +#define YYRHSLOC(Rhs, K) ((Rhs)[K]) +#ifndef YYLLOC_DEFAULT +# define YYLLOC_DEFAULT(Current, Rhs, N) \ + do \ + if (N) \ + { \ + (Current).begin = YYRHSLOC (Rhs, 1).begin; \ + (Current).end = YYRHSLOC (Rhs, N).end; \ + } \ + else \ + { \ + (Current).begin = (Current).end = YYRHSLOC (Rhs, 0).end; \ + } \ + while (false) +#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) << ' '; \ - yysymprint_ ((Type), (Value), (Location)); \ + *yycdebug_ << Title << ' '; \ + yy_symbol_print_ ((Type), (Value), (Location)); \ *yycdebug_ << std::endl; \ } \ } while (false) @@ -343,7 +353,7 @@ do { \ # define YY_REDUCE_PRINT(Rule) \ do { \ if (yydebug_) \ - yyreduce_print_ (Rule); \ + yy_reduce_print_ (Rule); \ } while (false) # define YY_STACK_PRINT() \ @@ -354,383 +364,433 @@ do { \ #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_) -#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 -yy::]b4_parser_class_name[::yytnamerr_ (const char *yystr) -{ - if (*yystr == '"') - { - std::string yyr = ""; - char const *yyp = yystr; +]b4_namespace_open[]b4_error_verbose_if([[ - 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 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; + } +]])[ - return yystr; -} + /// 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[ + { + } -#endif + ]b4_parser_class_name::~b4_parser_class_name[ () + { + } #if YYDEBUG -/*--------------------------------. -| Print this symbol on YYOUTPUT. | -`--------------------------------*/ - -void -yy::]b4_parser_class_name[::yysymprint_ (int yytype, - const semantic_type* yyvaluep, const location_type* yylocationp) -{ - /* Backward compatibility, but should be removed eventually. */ - std::ostream& cdebug_ = *yycdebug_; - - YYUSE (!&cdebug_); - YYUSE (yylocationp); - YYUSE (yyvaluep); - - *yycdebug_ << (yytype < yyntokens_ ? "token" : "nterm") - << ' ' << yytname_[yytype] << " (" - << *yylocationp << ": "; - switch (yytype) - { -]m4_map([b4_symbol_actions], m4_defn([b4_symbol_printers]))dnl -[ default: - break; - } - *yycdebug_ << ')'; -} -#endif /* ! YYDEBUG */ + /*--------------------------------. + | Print this symbol on YYOUTPUT. | + `--------------------------------*/ -void -yy::]b4_parser_class_name[::yydestruct_ (const char* yymsg, - int yytype, semantic_type* yyvaluep, location_type* yylocationp) -{ - YYUSE (yylocationp); - YYUSE (yymsg); - YYUSE (yyvaluep); + 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; + } + } - YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp); - switch (yytype) - { -]m4_map([b4_symbol_actions], m4_defn([b4_symbol_destructors]))[ - default: - break; - } -} - -void -yy::]b4_parser_class_name[::yypop_ (unsigned int n) -{ - yystate_stack_.pop (n); - yysemantic_stack_.pop (n); - yylocation_stack_.pop (n); -} - -std::ostream& -yy::]b4_parser_class_name[::debug_stream () const -{ - return *yycdebug_; -} - -void -yy::]b4_parser_class_name[::set_debug_stream (std::ostream& o) -{ - yycdebug_ = &o; -} - - -yy::]b4_parser_class_name[::debug_level_type -yy::]b4_parser_class_name[::debug_level () const -{ - return yydebug_; -} - -void -yy::]b4_parser_class_name[::set_debug_level (debug_level_type l) -{ - yydebug_ = l; -} - - -int -yy::]b4_parser_class_name[::parse () -{ - /// Look-ahead and look-ahead in internal form. - int yychar = yyempty_; - int yytoken = 0; - - /* State. */ - int yyn; - int yylen; - int yystate = 0; - - /* Error handling. */ - int yynerrs_ = 0; - int yyerrstatus_ = 0; - - /// Semantic value of the look-ahead. - semantic_type yylval; - /// Location of the look-ahead. - location_type yylloc; - /// The locations where the error started and ended. - location 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_initial_action -m4_popdef([b4_dollar_dollar])dnl -m4_popdef([b4_at_dollar])dnl -/* Line __line__ of yacc.c. */ -b4_syncline([@oline@], [@ofile@])])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; - goto yybackup; - - /* Backup. */ -yybackup: - - /* Try to take a decision without look-ahead. */ - yyn = yypact_[yystate]; - if (yyn == yypact_ninf_) - goto yydefault; - - /* Read a look-ahead token. */ - if (yychar == yyempty_) - { - YYCDEBUG << "Reading a token: "; - yychar = ]b4_c_function_call([yylex], [int], -[[YYSTYPE*], [&yylval]][]dnl -b4_location_if([, [[location*], [&yylloc]]])dnl -m4_ifdef([b4_lex_param], [, ]b4_lex_param))[; - } + 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; + } + } - /* 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); - } + void + ]b4_parser_class_name[::yypop_ (unsigned int n) + { + yystate_stack_.pop (n); + yysemantic_stack_.pop (n); + yylocation_stack_.pop (n); + } - /* 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; +#if YYDEBUG + std::ostream& + ]b4_parser_class_name[::debug_stream () const + { + return *yycdebug_; + } - /* Reduce or error. */ - yyn = yytable_[yyn]; - if (yyn <= 0) - { - if (yyn == 0 || yyn == yytable_ninf_) - goto yyerrlab; - yyn = -yyn; - goto yyreduce; - } + void + ]b4_parser_class_name[::set_debug_stream (std::ostream& o) + { + yycdebug_ = &o; + } - /* Accept? */ - if (yyn == yyfinal_) - goto yyacceptlab; - /* Shift the look-ahead token. */ - YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc); + ]b4_parser_class_name[::debug_level_type + ]b4_parser_class_name[::debug_level () const + { + return yydebug_; + } - /* Discard the token being shifted unless it is eof. */ - if (yychar != yyeof_) - yychar = yyempty_; + void + ]b4_parser_class_name[::set_debug_level (debug_level_type l) + { + yydebug_ = l; + } +#endif - 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 LEN_ 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]; + inline bool + ]b4_parser_class_name[::yy_pact_value_is_default_ (int yyvalue) + { + return yyvalue == yypact_ninf_; + } + inline bool + ]b4_parser_class_name[::yy_table_value_is_error_ (int yyvalue) { - slice slice (yylocation_stack_, yylen); - YYLLOC_DEFAULT (yyloc, slice, yylen); + return yyvalue == yytable_ninf_; } - YY_REDUCE_PRINT (yyn); - switch (yyn) - { - ]b4_actions[ - default: break; - } -]/* Line __line__ of lalr1.cc. */ -b4_syncline([@oline@], [@ofile@])[ + int + ]b4_parser_class_name[::parse () + { + /// Lookahead and lookahead in internal form. + int yychar = yyempty_; + int yytoken = 0; - yypop_ (yylen); + /* State. */ + int yyn; + int yylen = 0; + int yystate = 0; - YY_STACK_PRINT (); + /* Error handling. */ + int yynerrs_ = 0; + int yyerrstatus_ = 0; - yysemantic_stack_.push (yyval); - yylocation_stack_.push (yyloc); + /// 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]; - /* 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; + /// $$. + semantic_type yyval; + /// @@$. + location_type yyloc; -/*------------------------------------. -| 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])[)); - } + 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], + [[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 (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]; - yyerror_range[0] = yylloc; - if (yyerrstatus_ == 3) { - /* If just tried and failed to reuse look-ahead token after an + slice slice (yylocation_stack_, yylen); + YYLLOC_DEFAULT (yyloc, slice, yylen); + } + 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 (yychar <= yyeof_) - { + 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 look-ahead 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]; - yypop_ (yylen); - 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_) + } + 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)) { yyn += yyterror_; if (0 <= yyn && yyn <= yylast_ && yycheck_[yyn] == yyterror_) @@ -741,292 +801,352 @@ yyerrlab1: } } - /* Pop the current state because it cannot handle the error token. */ - if (yystate_stack_.height () == 1) + /* 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] = 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; + } - if (yyn == yyfinal_) - goto yyacceptlab; + // 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 = 0; + 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");]])[ + } - yyerror_range[1] = yylloc; - // Using YYLLOC is tempting, but would change the location of - // the look-ahead. 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]); + /* 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[ + }; - yystate = yyn; - goto yynewstate; + /* 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[ + }; - /* Accept. */ -yyacceptlab: - yyresult = 0; - goto yyreturn; + /* YYPGOTO[NTERM-NUM]. */ + const ]b4_int_type_for([b4_pgoto])[ + ]b4_parser_class_name[::yypgoto_[] = + { + ]b4_pgoto[ + }; - /* Abort. */ -yyabortlab: - yyresult = 1; - goto yyreturn; + /* YYDEFGOTO[NTERM-NUM]. */ + const ]b4_int_type_for([b4_defgoto])[ + ]b4_parser_class_name[::yydefgoto_[] = + { + ]b4_defgoto[ + }; -yyreturn: - if (yychar != yyeof_ && yychar != yyempty_) - yydestruct_ ("Cleanup: discarding lookahead", yytoken, &yylval, &yylloc); + /* 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[ + }; - while (yystate_stack_.height () != 1) - { - yydestruct_ ("Cleanup: popping", - yystos_[yystate_stack_[0]], - &yysemantic_stack_[0], - &yylocation_stack_[0]); - yypop_ (); - } + /* YYCHECK. */ + const ]b4_int_type_for([b4_check])[ + ]b4_parser_class_name[::yycheck_[] = + { + ]b4_check[ + }; - return yyresult; -} - -// Generate an error message. -std::string -yy::]b4_parser_class_name[::yysyntax_error_ (int yystate]dnl -b4_error_verbose_if([, int tok])[) -{ - std::string res; -#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; - 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) yy::b4_parser_class_name::yypact_ninf_ = b4_pact_ninf[; -const ]b4_int_type_for([b4_pact])[ -yy::]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])[ -yy::]b4_parser_class_name[::yydefact_[] = -{ - ]b4_defact[ -}; - -/* YYPGOTO[NTERM-NUM]. */ -const ]b4_int_type_for([b4_pgoto])[ -yy::]b4_parser_class_name[::yypgoto_[] = -{ - ]b4_pgoto[ -}; - -/* YYDEFGOTO[NTERM-NUM]. */ -const ]b4_int_type_for([b4_defgoto])[ -yy::]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) yy::b4_parser_class_name::yytable_ninf_ = b4_table_ninf[; -const ]b4_int_type_for([b4_table])[ -yy::]b4_parser_class_name[::yytable_[] = -{ - ]b4_table[ -}; - -/* YYCHECK. */ -const ]b4_int_type_for([b4_check])[ -yy::]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])[ -yy::]b4_parser_class_name[::yystos_[] = -{ - ]b4_stos[ -}; + /* 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])[ -yy::]b4_parser_class_name[::yytoken_number_[] = -{ - ]b4_toknum[ -}; + /* 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])[ -yy::]b4_parser_class_name[::yyr1_[] = -{ - ]b4_r1[ -}; + /* 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])[ -yy::]b4_parser_class_name[::yyr2_[] = -{ - ]b4_r2[ -}; + /* 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 yy::]b4_parser_class_name[::yytname_[] = -{ - ]b4_tname[ -}; + /* 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 yy::]b4_parser_class_name[::rhs_number_type -yy::]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])[ -yy::]b4_parser_class_name[::yyprhs_[] = -{ - ]b4_prhs[ -}; - -/* YYRLINE[YYN] -- Source line where rule number YYN was defined. */ -const ]b4_int_type_for([b4_rline])[ -yy::]b4_parser_class_name[::yyrline_[] = -{ - ]b4_rline[ -}; - -// Print the state stack on the debug stream. -void -yy::]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 -yy::]b4_parser_class_name[::yyreduce_print_ (int yyrule) -{ - unsigned int yylno = yyrline_[yyrule]; - /* Print the symbols being reduced, and their result. */ - *yycdebug_ << "Reducing stack by rule " << yyrule - 1 - << " (line " << yylno << "), "; - for (]b4_int_type_for([b4_prhs])[ i = yyprhs_[yyrule]; - 0 <= yyrhs_[i]; ++i) - *yycdebug_ << yytname_[yyrhs_[i]] << ' '; - *yycdebug_ << "-> " << yytname_[yyr1_[yyrule]] << std::endl; -} -#endif // 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[ + }; -/* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */ -yy::]b4_parser_class_name[::token_number_type -yy::]b4_parser_class_name[::yytranslate_ (int token) -{ - static - const token_number_type - translate_table[] = + /* 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_translate[ + ]b4_prhs[ }; - if ((unsigned int) token <= yyuser_token_number_max_) - return translate_table[token]; - else - return yyundef_token_; -} - -const int yy::]b4_parser_class_name[::yyeof_ = 0; -const int yy::]b4_parser_class_name[::yylast_ = ]b4_last[; -const int yy::]b4_parser_class_name[::yynnts_ = ]b4_nterms_number[; -const int yy::]b4_parser_class_name[::yyempty_ = -2; -const int yy::]b4_parser_class_name[::yyfinal_ = ]b4_final_state_number[; -const int yy::]b4_parser_class_name[::yyterror_ = 1; -const int yy::]b4_parser_class_name[::yyerrcode_ = 256; -const int yy::]b4_parser_class_name[::yyntokens_ = ]b4_tokens_number[; - -const unsigned int yy::]b4_parser_class_name[::yyuser_token_number_max_ = ]b4_user_token_number_max[; -const yy::]b4_parser_class_name[::token_number_type yy::]b4_parser_class_name[::yyundef_token_ = ]b4_undef_token_number[; + + /* 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 C++ parsers], [2002, 2003, 2004, 2005])[ +@output(b4_dir_prefix[]stack.hh@)@ +b4_copyright([Stack handling for Bison parsers in C++], + [2002-2011])[ #ifndef BISON_STACK_HH # define BISON_STACK_HH #include -namespace yy -{ +]b4_namespace_open[ template > class stack { @@ -1112,7 +1232,8 @@ namespace yy const S& stack_; unsigned int range_; }; -} +]b4_namespace_close[ -#endif // not BISON_STACK_HH] -m4_divert(-1) +#endif // not BISON_STACK_HH[]dnl +] +m4_divert_pop(0)