From 98c4f1bbebfb3cc6d8e031d36fd1da3c19e634fb Mon Sep 17 00:00:00 2001 From: Andrew Knight Date: Thu, 26 Mar 2015 06:14:16 +0200 Subject: Upgrade win_flex/win_bison to 2.5.5 (bison 3.0) This version is required by upstream ANGLE. win_bison conveniently uses a different executable name as the existing bison copy, avoiding conflicts. Change-Id: I2897ce97aef6795933d3ab8b5570a8494a55523e Reviewed-by: Lars Knoll --- gnuwin32/bin/data/lalr1.cc | 1161 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1161 insertions(+) create mode 100644 gnuwin32/bin/data/lalr1.cc (limited to 'gnuwin32/bin/data/lalr1.cc') diff --git a/gnuwin32/bin/data/lalr1.cc b/gnuwin32/bin/data/lalr1.cc new file mode 100644 index 00000000..3294f591 --- /dev/null +++ b/gnuwin32/bin/data/lalr1.cc @@ -0,0 +1,1161 @@ +# C++ skeleton for Bison + +# Copyright (C) 2002-2013 Free Software Foundation, Inc. + +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +m4_include(b4_pkgdatadir/[c++.m4]) + +# api.value.type=variant is valid. +m4_define([b4_value_type_setup_variant]) + +# b4_integral_parser_table_declare(TABLE-NAME, CONTENT, COMMENT) +# -------------------------------------------------------------- +# Declare "parser::yy_" whose contents is CONTENT. +m4_define([b4_integral_parser_table_declare], +[m4_ifval([$3], [b4_comment([$3], [ ]) +])dnl + static const b4_int_type_for([$2]) yy$1_[[]];dnl +]) + +# b4_integral_parser_table_define(TABLE-NAME, CONTENT, COMMENT) +# ------------------------------------------------------------- +# Define "parser::yy_" whose contents is CONTENT. +m4_define([b4_integral_parser_table_define], +[ const b4_int_type_for([$2]) + b4_parser_class_name::yy$1_[[]] = + { + $2 + };dnl +]) + +# b4_symbol_value_template(VAL, [TYPE]) +# ------------------------------------- +# Same as b4_symbol_value, but used in a template method. It makes +# a difference when using variants. Note that b4_value_type_setup_union +# overrides b4_symbol_value, so we must override it again. +m4_copy([b4_symbol_value], [b4_symbol_value_template]) +m4_append([b4_value_type_setup_union], + [m4_copy_force([b4_symbol_value_union], [b4_symbol_value_template])]) + +# b4_lhs_value([TYPE]) +# -------------------- +# Expansion of $$. +m4_define([b4_lhs_value], + [b4_symbol_value([yylhs.value], [$1])]) + + +# b4_lhs_location() +# ----------------- +# Expansion of @$. +m4_define([b4_lhs_location], + [yylhs.location]) + + +# b4_rhs_data(RULE-LENGTH, NUM) +# ----------------------------- +# Return the data corresponding to the symbol #NUM, where the current +# rule has RULE-LENGTH symbols on RHS. +m4_define([b4_rhs_data], + [yystack_@{b4_subtract($@)@}]) + + +# b4_rhs_state(RULE-LENGTH, NUM) +# ------------------------------ +# The state corresponding to the symbol #NUM, where the current +# rule has RULE-LENGTH symbols on RHS. +m4_define([b4_rhs_state], + [b4_rhs_data([$1], [$2]).state]) + + +# 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], + [b4_symbol_value([b4_rhs_data([$1], [$2]).value], [$3])]) + + +# b4_rhs_location(RULE-LENGTH, NUM) +# --------------------------------- +# Expansion of @NUM, where the current rule has RULE-LENGTH symbols +# on RHS. +m4_define([b4_rhs_location], + [b4_rhs_data([$1], [$2]).location]) + + +# b4_symbol_action(SYMBOL-NUM, KIND) +# ---------------------------------- +# Run the action KIND (destructor or printer) for SYMBOL-NUM. +# Same as in C, but using references instead of pointers. +m4_define([b4_symbol_action], +[b4_symbol_if([$1], [has_$2], +[m4_pushdef([b4_symbol_value], m4_defn([b4_symbol_value_template]))[]dnl +b4_dollar_pushdef([yysym.value], + b4_symbol_if([$1], [has_type], + [m4_dquote(b4_symbol([$1], [type]))]), + [yysym.location])dnl + b4_symbol_case_([$1]) +b4_syncline([b4_symbol([$1], [$2_line])], ["b4_symbol([$1], [$2_file])"]) + b4_symbol([$1], [$2]) +b4_syncline([@oline@], [@ofile@]) + break; + +m4_popdef([b4_symbol_value])[]dnl +b4_dollar_popdef[]dnl +])]) + + +# b4_lex +# ------ +# Call yylex. +m4_define([b4_lex], +[b4_token_ctor_if( +[b4_function_call([yylex], + [symbol_type], m4_ifdef([b4_lex_param], b4_lex_param))], +[b4_function_call([yylex], [int], + [b4_api_PREFIX[STYPE*], [&yyla.value]][]dnl +b4_locations_if([, [[location*], [&yyla.location]]])dnl +m4_ifdef([b4_lex_param], [, ]b4_lex_param))])]) + + +m4_pushdef([b4_copyright_years], + [2002-2013]) + +m4_define([b4_parser_class_name], + [b4_percent_define_get([[parser_class_name]])]) + +b4_bison_locations_if([# Backward compatibility. + m4_define([b4_location_constructors]) + m4_include(b4_pkgdatadir/[location.cc])]) +m4_include(b4_pkgdatadir/[stack.hh]) +b4_variant_if([m4_include(b4_pkgdatadir/[variant.hh])]) + +# b4_shared_declarations +# ---------------------- +# Declaration that might either go into the header (if --defines) +# or open coded in the parser body. +m4_define([b4_shared_declarations], +[b4_percent_code_get([[requires]])[ +]b4_parse_assert_if([# include ])[ +# include +# include +# include +# include ]b4_defines_if([[ +# include "stack.hh" +]b4_bison_locations_if([[# include "location.hh"]])])[ +]b4_variant_if([b4_variant_includes])[ + +]b4_YYDEBUG_define[ + +]b4_namespace_open[ + +]b4_defines_if([], +[b4_stack_define +b4_bison_locations_if([b4_position_define +b4_location_define])])[ + +]b4_variant_if([b4_variant_define])[ + + /// A Bison parser. + class ]b4_parser_class_name[ + { + public: +]b4_public_types_declare[ + /// Build a parser object. + ]b4_parser_class_name[ (]b4_parse_param_decl[); + virtual ~]b4_parser_class_name[ (); + + /// Parse. + /// \returns 0 iff parsing succeeded. + virtual int parse (); + +#if ]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 + + /// Report a syntax error.]b4_locations_if([[ + /// \param loc where the syntax error is found.]])[ + /// \param msg a description of the syntax error. + virtual void error (]b4_locations_if([[const location_type& loc, ]])[const std::string& msg); + + /// Report a syntax error. + void error (const syntax_error& err); + + private: + /// This class is not copyable. + ]b4_parser_class_name[ (const ]b4_parser_class_name[&); + ]b4_parser_class_name[& operator= (const ]b4_parser_class_name[&); + + /// State numbers. + typedef int state_type; + + /// Generate an error message. + /// \param yystate the state where the error occurred. + /// \param yytoken the lookahead token type, or yyempty_. + virtual std::string yysyntax_error_ (state_type yystate, + symbol_number_type yytoken) const; + + /// Compute post-reduction state. + /// \param yystate the current state + /// \param yylhs the nonterminal to push on the stack + state_type yy_lr_goto_state_ (state_type yystate, int yylhs); + + /// 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); + + static const ]b4_int_type(b4_pact_ninf, b4_pact_ninf)[ yypact_ninf_; + static const ]b4_int_type(b4_table_ninf, b4_table_ninf)[ yytable_ninf_; + + /// Convert a scanner token number \a t to a symbol number. + static token_number_type yytranslate_ (]b4_token_ctor_if([token_type], [int])[ t); + + // Tables. +]b4_parser_tables_declare[]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]])[ +]b4_integral_parser_table_declare([rline], [b4_rline], + [[YYRLINE[YYN] -- Source line where rule number YYN was defined.]])[ + /// Report on the debug stream that the rule \a r is going to be reduced. + virtual void yy_reduce_print_ (int r); + /// Print the state stack on the debug stream. + virtual void yystack_print_ (); + + // Debugging. + int yydebug_; + std::ostream* yycdebug_; + + /// \brief Display a symbol type, value and location. + /// \param yyo The output stream. + /// \param yysym The symbol. + template + void yy_print_ (std::ostream& yyo, const basic_symbol& yysym) const; +#endif + + /// \brief Reclaim the memory associated to a symbol. + /// \param yymsg Why this token is reclaimed. + /// If null, print nothing. + /// \param s The symbol. + template + void yy_destroy_ (const char* yymsg, basic_symbol& yysym) const; + + private: + /// Type access provider for state based symbols. + struct by_state + { + /// Default constructor. + by_state (); + + /// The symbol type as needed by the constructor. + typedef state_type kind_type; + + /// Constructor. + by_state (kind_type s); + + /// Copy constructor. + by_state (const by_state& other); + + /// Steal the symbol type from \a that. + void move (by_state& that); + + /// The (internal) type number (corresponding to \a state). + /// "empty" when empty. + symbol_number_type type_get () const; + + enum { empty = 0 }; + + /// The state. + state_type state; + }; + + /// "Internal" symbol: element of the stack. + struct stack_symbol_type : basic_symbol + { + /// Superclass. + typedef basic_symbol super_type; + /// Construct an empty symbol. + stack_symbol_type (); + /// Steal the contents from \a sym to build this. + stack_symbol_type (state_type s, symbol_type& sym); + /// Assignment, needed by push_back. + stack_symbol_type& operator= (const stack_symbol_type& that); + }; + + /// Stack type. + typedef stack stack_type; + + /// The stack. + stack_type yystack_; + + /// Push a new state on the stack. + /// \param m a debug message to display + /// if null, no trace is output. + /// \param s the symbol + /// \warning the contents of \a s.value is stolen. + void yypush_ (const char* m, stack_symbol_type& s); + + /// Push a new look ahead token on the state on the stack. + /// \param m a debug message to display + /// if null, no trace is output. + /// \param s the state + /// \param sym the symbol (for its value and location). + /// \warning the contents of \a s.value is stolen. + void yypush_ (const char* m, state_type s, symbol_type& sym); + + /// Pop \a n symbols the three stacks. + void yypop_ (unsigned int n = 1); + + // Constants. + enum + { + yyeof_ = 0, + yylast_ = ]b4_last[, //< Last index in yytable_. + yynnts_ = ]b4_nterms_number[, //< Number of nonterminal symbols. + yyempty_ = -2, + yyfinal_ = ]b4_final_state_number[, //< Termination state number. + yyterror_ = 1, + yyerrcode_ = 256, + yyntokens_ = ]b4_tokens_number[ //< Number of tokens. + }; + +]b4_parse_param_vars[ + }; + +]b4_token_ctor_if([b4_yytranslate_define +b4_public_types_define])[ +]b4_namespace_close[ + +]b4_percent_define_flag_if([[global_tokens_and_yystype]], +[b4_token_defines + +#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_defines_if( +[b4_output_begin([b4_spec_defines_file]) +b4_copyright([Skeleton interface for Bison LALR(1) parsers in C++]) +[ +/** + ** \file ]b4_spec_defines_file[ + ** Define the ]b4_namespace_ref[::parser class. + */ + +// C++ LALR(1) parser skeleton written by Akim Demaille. + +]b4_cpp_guard_open([b4_spec_defines_file])[ +]b4_shared_declarations[ +]b4_cpp_guard_close([b4_spec_defines_file]) +b4_output_end() +]) + + +b4_output_begin([b4_parser_file_name]) +b4_copyright([Skeleton implementation for Bison LALR(1) parsers in C++]) +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_null_define[ + +]b4_defines_if([[#include "@basename(]b4_spec_defines_file[@)"]], + [b4_shared_declarations])[ + +// User implementation prologue. +]b4_user_post_prologue[ +]b4_percent_code_get[ + +#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 + +]b4_locations_if([dnl +[#define YYRHSLOC(Rhs, K) ((Rhs)[K].location) +]b4_yylloc_default_define])[ + +// Suppress unused-variable warnings by "using" E. +#define YYUSE(E) ((void) (E)) + +// 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, Symbol) \ + do { \ + if (yydebug_) \ + { \ + *yycdebug_ << Title << ' '; \ + yy_print_ (*yycdebug_, Symbol); \ + *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, Symbol) YYUSE(Symbol) +# define YY_REDUCE_PRINT(Rule) static_cast(0) +# define YY_STACK_PRINT() static_cast(0) + +#endif // !]b4_api_PREFIX[DEBUG + +#define yyerrok (yyerrstatus_ = 0) +#define yyclearin (yyempty = true) + +#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[ + {} + + ]b4_parser_class_name::~b4_parser_class_name[ () + {} + + + /*---------------. + | Symbol types. | + `---------------*/ + +]b4_token_ctor_if([], [b4_public_types_define])[ + + // by_state. + inline + ]b4_parser_class_name[::by_state::by_state () + : state (empty) + {} + + inline + ]b4_parser_class_name[::by_state::by_state (const by_state& other) + : state (other.state) + {} + + inline + void + ]b4_parser_class_name[::by_state::move (by_state& that) + { + state = that.state; + that.state = empty; + } + + inline + ]b4_parser_class_name[::by_state::by_state (state_type s) + : state (s) + {} + + inline + ]b4_parser_class_name[::symbol_number_type + ]b4_parser_class_name[::by_state::type_get () const + { + return state == empty ? 0 : yystos_[state]; + } + + inline + ]b4_parser_class_name[::stack_symbol_type::stack_symbol_type () + {} + + + inline + ]b4_parser_class_name[::stack_symbol_type::stack_symbol_type (state_type s, symbol_type& that) + : super_type (s]b4_locations_if([, that.location])[) + { + ]b4_variant_if([b4_symbol_variant([that.type_get ()], + [value], [move], [that.value])], + [[value = that.value;]])[ + // that is emptied. + that.type = empty; + } + + inline + ]b4_parser_class_name[::stack_symbol_type& + ]b4_parser_class_name[::stack_symbol_type::operator= (const stack_symbol_type& that) + { + state = that.state; + ]b4_variant_if([b4_symbol_variant([that.type_get ()], + [value], [copy], [that.value])], + [[value = that.value;]])[]b4_locations_if([ + location = that.location;])[ + return *this; + } + + + template + inline + void + ]b4_parser_class_name[::yy_destroy_ (const char* yymsg, basic_symbol& yysym) const + { + if (yymsg) + YY_SYMBOL_PRINT (yymsg, yysym);]b4_variant_if([], [ + + // User destructor. + b4_symbol_actions([destructor], [yysym.type_get ()])])[ + } + +#if ]b4_api_PREFIX[DEBUG + template + void + ]b4_parser_class_name[::yy_print_ (std::ostream& yyo, + const basic_symbol& yysym) const + { + std::ostream& yyoutput = yyo; + YYUSE (yyoutput); + symbol_number_type yytype = yysym.type_get (); + yyo << (yytype < yyntokens_ ? "token" : "nterm") + << ' ' << yytname_[yytype] << " ("]b4_locations_if([ + << yysym.location << ": "])[; + ]b4_symbol_actions([printer])[ + yyo << ')'; + } +#endif + + inline + void + ]b4_parser_class_name[::yypush_ (const char* m, state_type s, symbol_type& sym) + { + stack_symbol_type t (s, sym); + yypush_ (m, t); + } + + inline + void + ]b4_parser_class_name[::yypush_ (const char* m, stack_symbol_type& s) + { + if (m) + YY_SYMBOL_PRINT (m, s); + yystack_.push (s); + } + + inline + void + ]b4_parser_class_name[::yypop_ (unsigned int n) + { + yystack_.pop (n); + } + +#if ]b4_api_PREFIX[DEBUG + std::ostream& + ]b4_parser_class_name[::debug_stream () const + { + return *yycdebug_; + } + + void + ]b4_parser_class_name[::set_debug_stream (std::ostream& o) + { + yycdebug_ = &o; + } + + + ]b4_parser_class_name[::debug_level_type + ]b4_parser_class_name[::debug_level () const + { + return yydebug_; + } + + void + ]b4_parser_class_name[::set_debug_level (debug_level_type l) + { + yydebug_ = l; + } +#endif // ]b4_api_PREFIX[DEBUG + + inline ]b4_parser_class_name[::state_type + ]b4_parser_class_name[::yy_lr_goto_state_ (state_type yystate, int yylhs) + { + int yyr = yypgoto_[yylhs - yyntokens_] + yystate; + if (0 <= yyr && yyr <= yylast_ && yycheck_[yyr] == yystate) + return yytable_[yyr]; + else + return yydefgoto_[yylhs - yyntokens_]; + } + + 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) + { + return yyvalue == yytable_ninf_; + } + + int + ]b4_parser_class_name[::parse () + { + /// Whether yyla contains a lookahead. + bool yyempty = true; + + // State. + int yyn; + int yylen = 0; + + // Error handling. + int yynerrs_ = 0; + int yyerrstatus_ = 0; + + /// The lookahead symbol. + symbol_type yyla;]b4_locations_if([[ + + /// The locations where the error started and ended. + stack_symbol_type yyerror_range[3];]])[ + + /// $$ and @@$. + stack_symbol_type yylhs; + + /// The return value of parse (). + int yyresult; + + // FIXME: This shoud be completely indented. It is not yet to + // avoid gratuitous conflicts when merging into the master branch. + try + { + YYCDEBUG << "Starting parse" << std::endl; + +]m4_ifdef([b4_initial_action], [ +b4_dollar_pushdef([yyla.value], [], [yyla.location])dnl + // User initialization code. + b4_user_initial_action +b4_dollar_popdef])[]dnl + + [ /* Initialize the stack. The initial state will be set in + yynewstate, since the latter expects the semantical and the + location values to have been already stored, initialize these + stacks with a primary value. */ + yystack_.clear (); + yypush_ (YY_NULL, 0, yyla); + + // A new symbol was pushed on the stack. + yynewstate: + YYCDEBUG << "Entering state " << yystack_[0].state << std::endl; + + // Accept? + if (yystack_[0].state == yyfinal_) + goto yyacceptlab; + + goto yybackup; + + // Backup. + yybackup: + + // Try to take a decision without lookahead. + yyn = yypact_[yystack_[0].state]; + if (yy_pact_value_is_default_ (yyn)) + goto yydefault; + + // Read a lookahead token. + if (yyempty) + { + YYCDEBUG << "Reading a token: "; + try + {]b4_token_ctor_if([[ + symbol_type yylookahead (]b4_lex[); + yyla.move (yylookahead);]], [[ + yyla.type = yytranslate_ (]b4_lex[);]])[ + } + catch (const syntax_error& yyexc) + { + error (yyexc); + goto yyerrlab1; + } + yyempty = false; + } + YY_SYMBOL_PRINT ("Next token is", yyla); + + /* If the proper action on seeing token YYLA.TYPE is to reduce or + to detect an error, take that action. */ + yyn += yyla.type_get (); + if (yyn < 0 || yylast_ < yyn || yycheck_[yyn] != yyla.type_get ()) + goto yydefault; + + // Reduce or error. + yyn = yytable_[yyn]; + if (yyn <= 0) + { + if (yy_table_value_is_error_ (yyn)) + goto yyerrlab; + yyn = -yyn; + goto yyreduce; + } + + // Discard the token being shifted. + yyempty = true; + + // Count tokens shifted since error; after three, turn off error status. + if (yyerrstatus_) + --yyerrstatus_; + + // Shift the lookahead token. + yypush_ ("Shifting", yyn, yyla); + goto yynewstate; + + /*-----------------------------------------------------------. + | yydefault -- do the default action for the current state. | + `-----------------------------------------------------------*/ + yydefault: + yyn = yydefact_[yystack_[0].state]; + if (yyn == 0) + goto yyerrlab; + goto yyreduce; + + /*-----------------------------. + | yyreduce -- Do a reduction. | + `-----------------------------*/ + yyreduce: + yylen = yyr2_[yyn]; + yylhs.state = yy_lr_goto_state_(yystack_[yylen].state, yyr1_[yyn]);]b4_variant_if([ + /* Variants are always initialized to an empty instance of the + correct type. The default $$=$1 action is NOT applied when using + variants. */ + b4_symbol_variant([[yyr1_@{yyn@}]], [yylhs.value], [build])],[ + /* If YYLEN is nonzero, implement the default value of the action: + '$$ = $1'. Otherwise, use the top of the stack. + + Otherwise, the following line sets YYLHS.VALUE to garbage. + This behavior is undocumented and Bison + users should not rely upon it. */ + if (yylen) + yylhs.value = yystack_@{yylen - 1@}.value; + else + yylhs.value = yystack_@{0@}.value;])[ +]b4_locations_if([dnl +[ + // Compute the default @@$. + { + slice slice (yystack_, yylen); + YYLLOC_DEFAULT (yylhs.location, slice, yylen); + }]])[ + + // Perform the reduction. + YY_REDUCE_PRINT (yyn); + try + { + switch (yyn) + { +]b4_user_actions[ + default: + break; + } + } + catch (const syntax_error& yyexc) + { + error (yyexc); + YYERROR; + } + YY_SYMBOL_PRINT ("-> $$ =", yylhs); + yypop_ (yylen); + yylen = 0; + YY_STACK_PRINT (); + + // Shift the result of the reduction. + yypush_ (YY_NULL, yylhs); + goto yynewstate; + + /*--------------------------------------. + | yyerrlab -- here on detecting error. | + `--------------------------------------*/ + yyerrlab: + // If not already recovering from an error, report this error. + if (!yyerrstatus_) + { + ++yynerrs_; + error (]b4_join(b4_locations_if([yyla.location]), + [[yysyntax_error_ (yystack_[0].state, + yyempty ? yyempty_ : yyla.type_get ())]])[); + } + +]b4_locations_if([[ + yyerror_range[1].location = yyla.location;]])[ + if (yyerrstatus_ == 3) + { + /* If just tried and failed to reuse lookahead token after an + error, discard it. */ + + // Return failure if at end of input. + if (yyla.type_get () == yyeof_) + YYABORT; + else if (!yyempty) + { + yy_destroy_ ("Error: discarding", yyla); + yyempty = true; + } + } + + // Else will try to reuse lookahead token after shifting the error token. + goto yyerrlab1; + + + /*---------------------------------------------------. + | yyerrorlab -- error raised explicitly by YYERROR. | + `---------------------------------------------------*/ + yyerrorlab: + + /* Pacify compilers like GCC when the user code never invokes + YYERROR and the label yyerrorlab therefore never appears in user + code. */ + if (false) + goto yyerrorlab;]b4_locations_if([[ + yyerror_range[1].location = yystack_[yylen - 1].location;]])b4_variant_if([[ + /* $$ was initialized before running the user action. */ + YY_SYMBOL_PRINT ("Error: discarding", yylhs); + yylhs.~stack_symbol_type();]])[ + /* Do not reclaim the symbols of the rule whose action triggered + this YYERROR. */ + yypop_ (yylen); + yylen = 0; + goto yyerrlab1; + + /*-------------------------------------------------------------. + | yyerrlab1 -- common code for both syntax error and YYERROR. | + `-------------------------------------------------------------*/ + yyerrlab1: + yyerrstatus_ = 3; // Each real token shifted decrements this. + { + stack_symbol_type error_token; + for (;;) + { + yyn = yypact_[yystack_[0].state]; + if (!yy_pact_value_is_default_ (yyn)) + { + yyn += yyterror_; + if (0 <= yyn && yyn <= yylast_ && yycheck_[yyn] == yyterror_) + { + yyn = yytable_[yyn]; + if (0 < yyn) + break; + } + } + + // Pop the current state because it cannot handle the error token. + if (yystack_.size () == 1) + YYABORT; +]b4_locations_if([[ + yyerror_range[1].location = yystack_[0].location;]])[ + yy_destroy_ ("Error: popping", yystack_[0]); + yypop_ (); + YY_STACK_PRINT (); + } +]b4_locations_if([[ + yyerror_range[2].location = yyla.location; + YYLLOC_DEFAULT (error_token.location, yyerror_range, 2);]])[ + + // Shift the error token. + error_token.state = yyn; + yypush_ ("Shifting", error_token); + } + goto yynewstate; + + // Accept. + yyacceptlab: + yyresult = 0; + goto yyreturn; + + // Abort. + yyabortlab: + yyresult = 1; + goto yyreturn; + + yyreturn: + if (!yyempty) + yy_destroy_ ("Cleanup: discarding lookahead", yyla); + + /* Do not reclaim the symbols of the rule whose action triggered + this YYABORT or YYACCEPT. */ + yypop_ (yylen); + while (1 < yystack_.size ()) + { + yy_destroy_ ("Cleanup: popping", yystack_[0]); + yypop_ (); + } + + return yyresult; + } + catch (...) + { + YYCDEBUG << "Exception caught: cleaning lookahead and stack" + << std::endl; + // Do not try to display the values of the reclaimed symbols, + // as their printer might throw an exception. + if (!yyempty) + yy_destroy_ (YY_NULL, yyla); + + while (1 < yystack_.size ()) + { + yy_destroy_ (YY_NULL, yystack_[0]); + yypop_ (); + } + throw; + } + } + + void + ]b4_parser_class_name[::error (const syntax_error& yyexc) + { + error (]b4_join(b4_locations_if([yyexc.location]), + [[yyexc.what()]])[); + } + + // Generate an error message. + std::string + ]b4_parser_class_name[::yysyntax_error_ (]dnl +b4_error_verbose_if([state_type yystate, symbol_number_type yytoken], + [state_type, symbol_number_type])[) const + {]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 + yyla. (However, yyla is currently not documented for users.) + - 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");]])[ + } + + + const ]b4_int_type(b4_pact_ninf, b4_pact_ninf) b4_parser_class_name::yypact_ninf_ = b4_pact_ninf[; + + const ]b4_int_type(b4_table_ninf, b4_table_ninf) b4_parser_class_name::yytable_ninf_ = b4_table_ninf[; + +]b4_parser_tables_define[ + +]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_[] = + { + ]b4_tname[ + }; + +]b4_token_table_if([[#if ]b4_api_PREFIX[DEBUG]])[ +]b4_integral_parser_table_define([rline], [b4_rline])[ + + // Print the state stack on the debug stream. + void + ]b4_parser_class_name[::yystack_print_ () + { + *yycdebug_ << "Stack now"; + for (stack_type::const_iterator + i = yystack_.begin (), + i_end = yystack_.end (); + i != i_end; ++i) + *yycdebug_ << ' ' << i->state; + *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 << " =", + ]b4_rhs_data(yynrhs, yyi + 1)[); + } +#endif // ]b4_api_PREFIX[DEBUG + +]b4_token_ctor_if([], [b4_yytranslate_define])[ +]b4_namespace_close[ +]b4_epilogue[]dnl +b4_output_end() + + +m4_popdef([b4_copyright_years])dnl -- cgit v1.2.3