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- m4_divert(-1)
-
- # C++ skeleton for Bison
-
- # Copyright (C) 2002, 2003, 2004, 2005 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
- # (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
-
- m4_include(b4_pkgdatadir/[c++.m4])
-
- # 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])[
- /* FIXME: This is wrong, we want computed header guards.
- I don't know why the macros are missing now. :( */
- #ifndef PARSER_HEADER_H
- # define PARSER_HEADER_H
-
- #include <string>
- #include <iostream>
-
- /* Using locations. */
- #define YYLSP_NEEDED ]b4_locations_flag[
-
- namespace yy
- {
- class position;
- class location;
- }
-
- ]b4_token_enums(b4_tokens)[
-
- /* Copy the first part of user declarations. */
- ]b4_pre_prologue[
-
- ]/* Line __line__ of lalr1.cc. */
- b4_syncline([@oline@], [@ofile@])[
-
- #include "stack.hh"
- #include "location.hh"
-
- /* Enabling traces. */
- #ifndef YYDEBUG
- # define YYDEBUG ]b4_debug[
- #endif
-
- /* Enabling verbose error messages. */
- #ifdef YYERROR_VERBOSE
- # undef YYERROR_VERBOSE
- # define YYERROR_VERBOSE 1
- #else
- # define YYERROR_VERBOSE ]b4_error_verbose[
- #endif
-
- #if YYERROR_VERBOSE
- # define YYERROR_VERBOSE_IF(x) x
- #else
- # define YYERROR_VERBOSE_IF(x) /* empty */
- #endif
-
- /* Enabling the token table. */
- #ifndef YYTOKEN_TABLE
- # define YYTOKEN_TABLE ]b4_token_table[
- #endif
-
- #if ! defined (YYSTYPE) && ! defined (YYSTYPE_IS_DECLARED)
- ]m4_ifdef([b4_stype],
- [b4_syncline([b4_stype_line], [b4_file_name])
- union YYSTYPE b4_stype;
- /* Line __line__ of lalr1.cc. */
- b4_syncline([@oline@], [@ofile@])],
- [typedef int YYSTYPE;])[
- # define yystype YYSTYPE /* obsolescent; will be withdrawn */
- # define YYSTYPE_IS_DECLARED 1
- # define YYSTYPE_IS_TRIVIAL 1
- #endif
-
- /* Copy the second part of user declarations. */
- ]b4_post_prologue[
-
- ]/* Line __line__ of lalr1.cc. */
- b4_syncline([@oline@], [@ofile@])[
- /* 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 (0)
- #endif
-
- namespace yy
- {
- class ]b4_parser_class_name[;
-
- template <typename P>
- struct traits
- {
- };
-
- template <>
- struct traits<]b4_parser_class_name[>
- {
- typedef ]b4_int_type_for([b4_translate])[ token_number_type;
- typedef ]b4_int_type_for([b4_rhs])[ rhs_number_type;
- typedef int state_type;
- typedef YYSTYPE semantic_type;
- typedef ]b4_location_type[ location_type;
- };
- }
-
- namespace yy
- {
- /// A Bison parser.
- class ]b4_parser_class_name[
- {
- /// Symbol semantic values.
- typedef traits<]b4_parser_class_name[>::semantic_type semantic_type;
- /// Symbol locations.
- typedef traits<]b4_parser_class_name[>::location_type location_type;
-
- public:
- /// 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[ ()
- {
- }
-
- /// Parse.
- /// \returns 0 iff parsing succeeded.
- virtual int parse ();
-
- /// 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);
-
- 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 tok the look-ahead token.
- virtual std::string yysyntax_error_ (YYERROR_VERBOSE_IF (int tok));
-
- #if YYDEBUG
- /// \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 */
-
-
- /// State numbers.
- typedef traits<]b4_parser_class_name[>::state_type state_type;
- /// State stack type.
- typedef stack<state_type> state_stack_type;
- /// Semantic value stack type.
- typedef stack<semantic_type> semantic_stack_type;
- /// location stack type.
- typedef stack<location_type> location_stack_type;
-
- /// The state stack.
- state_stack_type yystate_stack_;
- /// The semantic value stack.
- semantic_stack_type yysemantic_stack_;
- /// The location stack.
- location_stack_type yylocation_stack_;
-
- /// Internal symbol numbers.
- typedef traits<]b4_parser_class_name[>::token_number_type token_number_type;
- /* Tables. */
- /// For a state, the index in \a yytable_ of its portion.
- static const ]b4_int_type_for([b4_pact])[ yypact_[];
- static const ]b4_int_type(b4_pact_ninf, b4_pact_ninf)[ yypact_ninf_;
-
- /// For a state, default rule to reduce.
- /// Unless\a yytable_ specifies something else to do.
- /// Zero means the default is an error.
- static const ]b4_int_type_for([b4_defact])[ yydefact_[];
-
- static const ]b4_int_type_for([b4_pgoto])[ yypgoto_[];
- static const ]b4_int_type_for([b4_defgoto])[ yydefgoto_[];
-
- /// What to do in a state.
- /// \a yytable_[yypact_[s]]: what to do in state \a s.
- /// - if positive, shift that token.
- /// - if negative, reduce the rule which number is the opposite.
- /// - if zero, do what YYDEFACT says.
- static const ]b4_int_type_for([b4_table])[ yytable_[];
- static const ]b4_int_type(b4_table_ninf, b4_table_ninf)[ yytable_ninf_;
-
- static const ]b4_int_type_for([b4_check])[ yycheck_[];
-
- /// For a state, its accessing symbol.
- static const ]b4_int_type_for([b4_stos])[ yystos_[];
-
- /// For a rule, its LHS.
- static const ]b4_int_type_for([b4_r1])[ yyr1_[];
- /// For a rule, its RHS length.
- static const ]b4_int_type_for([b4_r2])[ yyr2_[];
-
- #if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
- /// For a symbol, its name in clear.
- static const char* const yytname_[];
- #endif
-
- #if YYERROR_VERBOSE
- /// Convert the symbol name \a n to a form suitable for a diagnostic.
- virtual std::string yytnamerr_ (const char *n);
- #endif
-
- #if YYDEBUG
- /// A type to store symbol numbers and -1.
- typedef traits<]b4_parser_class_name[>::rhs_number_type 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 yyreduce_print_ (int r);
- /// Print the state stack on the debug stream.
- virtual void yystack_print_ ();
- #endif
-
- /// Convert a scanner token number to a symbol number.
- inline token_number_type yytranslate_ (int token);
-
- /// \brief Reclaim the memory associated to a symbol.
- /// \param yymsg Why this token is reclaimed.
- /// \param yytype The symbol type.
- /// \param yyvaluep Its semantic value.
- /// \param yylocationp Its location.
- inline void yydestruct_ (const char* yymsg,
- int yytype,
- semantic_type* yyvaluep,
- location_type* yylocationp);
-
- /// Pop \a n symbols the three stacks.
- inline void yypop_ (unsigned int n = 1);
-
- /* Constants. */
- static const int yyeof_;
- /* LAST_ -- Last index in TABLE_. */
- static const int yylast_;
- static const int yynnts_;
- static const int yyempty_;
- static const int yyfinal_;
- static const int yyterror_;
- static const int yyerrcode_;
- static const int yyntokens_;
- static const unsigned int yyuser_token_number_max_;
- static const token_number_type yyundef_token_;
-
- /* State. */
- int yyn_;
- int yylen_;
- int yystate_;
-
- /* Error handling. */
- int yynerrs_;
- int yyerrstatus_;
-
- /* Debugging. */
- int yydebug_;
- std::ostream* yycdebug_;
-
- ]b4_parse_param_vars[
- };
- }
-
- #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], [],
- [
- // Take the name prefix into account.
- #define yylex b4_prefix[]lex])
- m4_if(b4_defines_flag, 0, [],
- [
- #include @output_header_name@])[
-
- #ifndef YY_
- # if YYENABLE_NLS
- # if ENABLE_NLS
- # include <libintl.h> /* FIXME: INFRINGES ON USER NAME SPACE */
- # define YY_(msgid) dgettext ("bison-runtime", msgid)
- # endif
- # endif
- # ifndef YY_
- # define YY_(msgid) msgid
- # endif
- #endif
-
- /* A pseudo ostream that takes yydebug_ into account. */
- # define YYCDEBUG \
- for (bool yydebugcond_ = yydebug_; yydebugcond_; yydebugcond_ = false) \
- (*yycdebug_)
-
- /* Enable debugging if requested. */
- #if YYDEBUG
-
- # define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
- do { \
- if (yydebug_) \
- { \
- *yycdebug_ << (Title) << ' '; \
- yysymprint_ ((Type), (Value), (Location)); \
- *yycdebug_ << std::endl; \
- } \
- } while (0)
-
- # define YY_REDUCE_PRINT(Rule) \
- do { \
- if (yydebug_) \
- yyreduce_print_ (Rule); \
- } while (0)
-
- # define YY_STACK_PRINT() \
- do { \
- if (yydebug_) \
- yystack_print_ (); \
- } while (0)
-
- #else /* !YYDEBUG */
-
- # define YY_SYMBOL_PRINT(Title, Type, Value, Location)
- # define YY_REDUCE_PRINT(Rule)
- # define YY_STACK_PRINT()
-
- #endif /* !YYDEBUG */
-
- #define YYACCEPT goto yyacceptlab
- #define YYABORT goto yyabortlab
- #define YYERROR goto yyerrorlab
-
- #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;
-
- for (;;)
- switch (*++yyp)
- {
- case '\'':
- case ',':
- goto do_not_strip_quotes;
-
- case '\\':
- if (*++yyp != '\\')
- goto do_not_strip_quotes;
- /* Fall through. */
- default:
- yyr += *yyp;
- break;
-
- case '"':
- return yyr;
- }
- do_not_strip_quotes: ;
- }
-
- return yystr;
- }
-
- #endif
-
- #if YYDEBUG
- /*--------------------------------.
- | Print this symbol on YYOUTPUT. |
- `--------------------------------*/
-
- void
- yy::]b4_parser_class_name[::yysymprint_ (int yytype,
- const semantic_type* yyvaluep, const location_type* yylocationp)
- {
- /* Pacify ``unused variable'' warnings. */
- (void) yyvaluep;
- (void) yylocationp;
- /* Backward compatibility, but should be removed eventually. */
- std::ostream& cdebug_ = *yycdebug_;
- (void) cdebug_;
-
- *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 */
-
- void
- yy::]b4_parser_class_name[::yydestruct_ (const char* yymsg,
- int yytype, semantic_type* yyvaluep, location_type* yylocationp)
- {
- /* Pacify ``unused variable'' warnings. */
- (void) yymsg;
- (void) yyvaluep;
- (void) yylocationp;
-
- 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 yylooka;
- int yyilooka;
-
- /// 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;
-
- yynerrs_ = 0;
- yyerrstatus_ = 0;
-
- /* Start. */
- yystate_ = 0;
- yylooka = yyempty_;
-
- ]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 (yylooka == yyempty_)
- {
- YYCDEBUG << "Reading a token: ";
- yylooka = ]b4_c_function_call([yylex], [int],
- [[YYSTYPE*], [&yylval]][]dnl
- b4_location_if([, [[location*], [&yylloc]]])dnl
- m4_ifdef([b4_lex_param], [, ]b4_lex_param))[;
- }
-
-
- /* Convert token to internal form. */
- if (yylooka <= yyeof_)
- {
- yylooka = yyilooka = yyeof_;
- YYCDEBUG << "Now at end of input." << std::endl;
- }
- else
- {
- yyilooka = yytranslate_ (yylooka);
- YY_SYMBOL_PRINT ("Next token is", yyilooka, &yylval, &yylloc);
- }
-
- /* If the proper action on seeing token ILOOKA_ is to reduce or to
- detect an error, take that action. */
- yyn_ += yyilooka;
- if (yyn_ < 0 || yylast_ < yyn_ || yycheck_[yyn_] != yyilooka)
- goto yydefault;
-
- /* Reduce or error. */
- yyn_ = yytable_[yyn_];
- if (yyn_ < 0)
- {
- if (yyn_ == yytable_ninf_)
- goto yyerrlab;
- else
- {
- yyn_ = -yyn_;
- goto yyreduce;
- }
- }
- else if (yyn_ == 0)
- goto yyerrlab;
-
- /* Accept? */
- if (yyn_ == yyfinal_)
- goto yyacceptlab;
-
- /* Shift the look-ahead token. */
- YY_SYMBOL_PRINT ("Shifting", yyilooka, &yylval, &yylloc);
-
- /* Discard the token being shifted unless it is eof. */
- if (yylooka != yyeof_)
- yylooka = 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 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];
-
- {
- slice<location_type, location_stack_type> slice (yylocation_stack_, yylen_);
- YYLLOC_DEFAULT (yyloc, slice, yylen_);
- }
- YY_REDUCE_PRINT (yyn_);
- switch (yyn_)
- {
- ]b4_actions[
- default: break;
- }
-
- ]/* Line __line__ of lalr1.cc. */
- b4_syncline([@oline@], [@ofile@])[
-
- yypop_ (yylen_);
-
- YY_STACK_PRINT ();
-
- yysemantic_stack_.push (yyval);
- yylocation_stack_.push (yyloc);
-
- /* Shift the result of the reduction. */
- yyn_ = yyr1_[yyn_];
- yystate_ = yypgoto_[yyn_ - yyntokens_] + yystate_stack_[0];
- if (0 <= yystate_ && yystate_ <= yylast_
- && yycheck_[yystate_] == yystate_stack_[0])
- yystate_ = yytable_[yystate_];
- else
- yystate_ = yydefgoto_[yyn_ - yyntokens_];
- goto yynewstate;
-
- /*------------------------------------.
- | yyerrlab -- here on detecting error |
- `------------------------------------*/
- yyerrlab:
- /* If not already recovering from an error, report this error. */
- if (!yyerrstatus_)
- {
- ++yynerrs_;
- error (yylloc, yysyntax_error_ (YYERROR_VERBOSE_IF (yyilooka)));
- }
-
- yyerror_range[0] = yylloc;
- if (yyerrstatus_ == 3)
- {
- /* If just tried and failed to reuse look-ahead token after an
- error, discard it. */
-
- if (yylooka <= yyeof_)
- {
- /* Return failure if at end of input. */
- if (yylooka == yyeof_)
- YYABORT;
- }
- else
- {
- yydestruct_ ("Error: discarding", yyilooka, &yylval, &yylloc);
- yylooka = 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_)
- {
- yyn_ += yyterror_;
- if (0 <= yyn_ && yyn_ <= yylast_ && yycheck_[yyn_] == yyterror_)
- {
- yyn_ = yytable_[yyn_];
- if (0 < yyn_)
- break;
- }
- }
-
- /* Pop the current state because it cannot handle the error token. */
- if (yystate_stack_.height () == 1)
- YYABORT;
-
- yyerror_range[0] = yylocation_stack_[0];
- yydestruct_ ("Error: popping",
- yystos_[yystate_],
- &yysemantic_stack_[0], &yylocation_stack_[0]);
- yypop_ ();
- yystate_ = yystate_stack_[0];
- YY_STACK_PRINT ();
- }
-
- if (yyn_ == yyfinal_)
- goto yyacceptlab;
-
- 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]);
-
- yystate_ = yyn_;
- goto yynewstate;
-
- /* Accept. */
- yyacceptlab:
- yyresult_ = 0;
- goto yyreturn;
-
- /* Abort. */
- yyabortlab:
- yyresult_ = 1;
- goto yyreturn;
-
- yyreturn:
- if (yylooka != yyeof_ && yylooka != yyempty_)
- yydestruct_ ("Cleanup: discarding lookahead", yyilooka, &yylval, &yylloc);
-
- 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
- yy::]b4_parser_class_name[::yysyntax_error_ (YYERROR_VERBOSE_IF (int tok))
- {
- std::string res;
- #if YYERROR_VERBOSE
- 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[
- };
-
- #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[
- };
- #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[
- };
-
- /* 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[
- };
-
- #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[
- };
- #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 " << yyn_ - 1
- << " (line " << yylno << "), ";
- for (]b4_int_type_for([b4_prhs])[ i = yyprhs_[yyn_];
- 0 <= yyrhs_[i]; ++i)
- *yycdebug_ << yytname_[yyrhs_[i]] << ' ';
- *yycdebug_ << "-> " << yytname_[yyr1_[yyn_]] << std::endl;
- }
- #endif // YYDEBUG
-
- /* 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[] =
- {
- ]b4_translate[
- };
- 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[;
-
- ]b4_epilogue
- dnl
- @output stack.hh
- b4_copyright([stack handling for Bison C++ parsers], [2002, 2003, 2004, 2005])[
-
- #ifndef BISON_STACK_HH
- # define BISON_STACK_HH
-
- #include <deque>
-
- namespace yy
- {
- template <class T, class S = std::deque<T> >
- class stack
- {
- public:
-
- // Hide our reversed order.
- typedef typename S::reverse_iterator iterator;
- typedef typename S::const_reverse_iterator const_iterator;
-
- stack () : seq_ ()
- {
- }
-
- stack (unsigned int n) : seq_ (n)
- {
- }
-
- inline
- T&
- operator [] (unsigned int i)
- {
- return seq_[i];
- }
-
- inline
- const T&
- operator [] (unsigned int i) const
- {
- return seq_[i];
- }
-
- inline
- void
- push (const T& t)
- {
- seq_.push_front (t);
- }
-
- inline
- void
- pop (unsigned int n = 1)
- {
- for (; n; --n)
- seq_.pop_front ();
- }
-
- inline
- unsigned int
- height () const
- {
- return seq_.size ();
- }
-
- inline const_iterator begin () const { return seq_.rbegin (); }
- inline const_iterator end () const { return seq_.rend (); }
-
- private:
-
- S seq_;
- };
-
- /// Present a slice of the top of a stack.
- template <class T, class S = stack<T> >
- class slice
- {
- public:
-
- slice (const S& stack,
- unsigned int range) : stack_ (stack),
- range_ (range)
- {
- }
-
- inline
- const T&
- operator [] (unsigned int i) const
- {
- return stack_[range_ - i];
- }
-
- private:
-
- const S& stack_;
- unsigned int range_;
- };
- }
-
- #endif // not BISON_STACK_HH]
- dnl
- @output position.hh
- b4_copyright([Position class for Bison C++ parsers], [2002, 2003, 2004, 2005])[
-
- /**
- ** \file position.hh
- ** Define the position class.
- */
-
- #ifndef BISON_POSITION_HH
- # define BISON_POSITION_HH
-
- # include <iostream>
- # include <string>
-
- namespace yy
- {
- /// Abstract a position.
- class position
- {
- public:
- /// Initial column number.
- static const unsigned int initial_column = 0;
- /// Initial line number.
- static const unsigned int initial_line = 1;
-
- /** \name Ctor & dtor.
- ** \{ */
- public:
- /// Construct a position.
- position () :
- filename (0),
- line (initial_line),
- column (initial_column)
- {
- }
- /** \} */
-
-
- /** \name Line and Column related manipulators
- ** \{ */
- public:
- /// (line related) Advance to the COUNT next lines.
- inline void lines (int count = 1)
- {
- column = initial_column;
- line += count;
- }
-
- /// (column related) Advance to the COUNT next columns.
- inline void columns (int count = 1)
- {
- int leftmost = initial_column;
- int current = column;
- if (leftmost <= current + count)
- column += count;
- else
- column = initial_column;
- }
- /** \} */
-
- public:
- /// File name to which this position refers.
- ]b4_filename_type[* filename;
- /// Current line number.
- unsigned int line;
- /// Current column number.
- unsigned int column;
- };
-
- /// Add and assign a position.
- inline const position&
- operator+= (position& res, const int width)
- {
- res.columns (width);
- return res;
- }
-
- /// Add two position objects.
- inline const position
- operator+ (const position& begin, const int width)
- {
- position res = begin;
- return res += width;
- }
-
- /// Add and assign a position.
- inline const position&
- operator-= (position& res, const int width)
- {
- return res += -width;
- }
-
- /// Add two position objects.
- inline const position
- operator- (const position& begin, const int width)
- {
- return begin + -width;
- }
-
- /** \brief Intercept output stream redirection.
- ** \param ostr the destination output stream
- ** \param pos a reference to the position to redirect
- */
- inline std::ostream&
- operator<< (std::ostream& ostr, const position& pos)
- {
- if (pos.filename)
- ostr << *pos.filename << ':';
- return ostr << pos.line << '.' << pos.column;
- }
-
- }
- #endif // not BISON_POSITION_HH]
- @output location.hh
- b4_copyright([Location class for Bison C++ parsers], [2002, 2003, 2004, 2005])[
-
- /**
- ** \file location.hh
- ** Define the location class.
- */
-
- #ifndef BISON_LOCATION_HH
- # define BISON_LOCATION_HH
-
- # include <iostream>
- # include <string>
- # include "position.hh"
-
- namespace yy
- {
-
- /// Abstract a location.
- class location
- {
- /** \name Ctor & dtor.
- ** \{ */
- public:
- /// Construct a location.
- location () :
- begin (),
- end ()
- {
- }
- /** \} */
-
-
- /** \name Line and Column related manipulators
- ** \{ */
- public:
- /// Reset initial location to final location.
- inline void step ()
- {
- begin = end;
- }
-
- /// Extend the current location to the COUNT next columns.
- inline void columns (unsigned int count = 1)
- {
- end += count;
- }
-
- /// Extend the current location to the COUNT next lines.
- inline void lines (unsigned int count = 1)
- {
- end.lines (count);
- }
- /** \} */
-
-
- public:
- /// Beginning of the located region.
- position begin;
- /// End of the located region.
- position end;
- };
-
- /// Join two location objects to create a location.
- inline const location operator+ (const location& begin, const location& end)
- {
- location res = begin;
- res.end = end.end;
- return res;
- }
-
- /// Add two location objects.
- inline const location operator+ (const location& begin, unsigned int width)
- {
- location res = begin;
- res.columns (width);
- return res;
- }
-
- /// Add and assign a location.
- inline location& operator+= (location& res, unsigned int width)
- {
- res.columns (width);
- return res;
- }
-
- /** \brief Intercept output stream redirection.
- ** \param ostr the destination output stream
- ** \param loc a reference to the location to redirect
- **
- ** Avoid duplicate information.
- */
- inline std::ostream& operator<< (std::ostream& ostr, const location& loc)
- {
- position last = loc.end - 1;
- ostr << loc.begin;
- if (last.filename
- && (!loc.begin.filename
- || *loc.begin.filename != *last.filename))
- ostr << '-' << last;
- else if (loc.begin.line != last.line)
- ostr << '-' << last.line << '.' << last.column;
- else if (loc.begin.column != last.column)
- ostr << '-' << last.column;
- return ostr;
- }
-
- }
-
- #endif // not BISON_LOCATION_HH]
-