# C++ skeleton for Bison
-# Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+# Copyright (C) 2002, 2003, 2004, 2005, 2006 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
# 02110-1301 USA
m4_include(b4_pkgdatadir/[c++.m4])
+
+# The header is mandatory.
+b4_defines_if([],
+ [m4_fatal(b4_skeleton[: using %defines is mandatory])])
+
+# Backward compatibility.
+m4_define([b4_location_constructors])
m4_include(b4_pkgdatadir/[location.cc])
# We do want M4 expansion after # for CPP macros.
m4_changecom()
m4_divert(0)dnl
-m4_if(b4_defines_flag, 0, [],
+b4_defines_if(
[@output @output_header_name@
-b4_copyright([C++ Skeleton parser for LALR(1) parsing with Bison],
- [2002, 2003, 2004, 2005])
+b4_copyright([Skeleton interface for Bison LALR(1) parsers in C++],
+ [2002, 2003, 2004, 2005, 2006])
dnl FIXME: This is wrong, we want computed header guards.
[
+/* C++ LALR(1) parser skeleton written by Akim Demaille. */
+
#ifndef PARSER_HEADER_H
# define PARSER_HEADER_H
#include <iostream>
#include "stack.hh"
-namespace yy
+namespace ]b4_namespace[
{
class position;
class location;
/* Enabling traces. */
#ifndef YYDEBUG
-# define YYDEBUG ]b4_debug[
+# define YYDEBUG ]b4_debug_flag[
#endif
/* Enabling verbose error messages. */
# 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. */
} while (false)
#endif
-namespace yy
+namespace ]b4_namespace[
{
/// A Bison parser.
{
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;
+[ union semantic_type
+b4_stype
/* Line __line__ of lalr1.cc. */
-b4_syncline([@oline@], [@ofile@])],
+b4_syncline([@oline@], [@ofile@])
+ ;],
[ typedef int semantic_type;])[
#else
typedef YYSTYPE semantic_type;
{
]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.
b4_error_verbose_if([, int tok])[);
#if YYDEBUG
+ /// \brief Report a symbol value on the debug stream.
+ /// \param yytype The token type.
+ /// \param yyvaluep Its semantic value.
+ /// \param yylocationp Its location.
+ virtual void yy_symbol_value_print_ (int yytype,
+ const semantic_type* yyvaluep,
+ const location_type* yylocationp);
/// \brief Report a symbol on the debug stream.
/// \param yytype The token type.
/// \param yyvaluep Its semantic value.
/// \param yylocationp Its location.
- virtual void yysymprint_ (int yytype,
- const semantic_type* yyvaluep,
- const location_type* yylocationp);
+ virtual void yy_symbol_print_ (int yytype,
+ const semantic_type* yyvaluep,
+ const location_type* yylocationp);
#endif /* ! YYDEBUG */
/// 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_ ();
#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.
/// \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);
[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::b4_parser_class_name::semantic_type
#endif
])[
#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], [],
+b4_copyright([Skeleton implementation for Bison LALR(1) parsers in C++],
+ [2002, 2003, 2004, 2005, 2006])
+m4_if(b4_prefix, [yy], [],
[
// Take the name prefix into account.
#define yylex b4_prefix[]lex])
-m4_if(b4_defines_flag, 0, [],
-[
+b4_defines_if([
#include @output_header_name@])[
/* User implementation prologue. */
#endif
/* Suppress unused-variable warnings by "using" E. */
-#define YYUSE(e) do {;} while (false && (e))
+#define YYUSE(e) ((void) (e))
-/* A pseudo ostream that takes yydebug_ into account. */
+/* A pseudo ostream that takes yydebug_ into account. */
# define YYCDEBUG \
for (bool yydebugcond_ = yydebug_; yydebugcond_; yydebugcond_ = false) \
(*yycdebug_)
do { \
if (yydebug_) \
{ \
- *yycdebug_ << (Title) << ' '; \
- yysymprint_ ((Type), (Value), (Location)); \
+ *yycdebug_ << Title << ' '; \
+ yy_symbol_print_ ((Type), (Value), (Location)); \
*yycdebug_ << std::endl; \
} \
} while (false)
# define YY_REDUCE_PRINT(Rule) \
do { \
if (yydebug_) \
- yyreduce_print_ (Rule); \
+ yy_reduce_print_ (Rule); \
} while (false)
# define YY_STACK_PRINT() \
#define YYABORT goto yyabortlab
#define YYERROR goto yyerrorlab
+namespace ]b4_namespace[
+{
#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;
+ /* 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;
+ }
- 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: ;
- }
+#endif
- return yystr;
-}
+ /// Build a parser object.
+ ]b4_parser_class_name::b4_parser_class_name[ (]b4_parse_param_decl[)
+ : yydebug_ (false),
+ yycdebug_ (&std::cerr)]b4_parse_param_cons[
+ {
+ }
-#endif
+ ]b4_parser_class_name::~b4_parser_class_name[ ()
+ {
+ }
#if YYDEBUG
-/*--------------------------------.
-| Print this symbol on YYOUTPUT. |
-`--------------------------------*/
+ /*--------------------------------.
+ | 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_;
+ 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;
+ }
+ }
- 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_ << ')';
-}
+ 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 /* ! YYDEBUG */
-void
-yy::]b4_parser_class_name[::yydestruct_ (const char* yymsg,
- int yytype, semantic_type* yyvaluep, location_type* yylocationp)
-{
- YYUSE (yylocationp);
- YYUSE (yymsg);
- YYUSE (yyvaluep);
-
- YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
-
- switch (yytype)
- {
-]m4_map([b4_symbol_actions], m4_defn([b4_symbol_destructors]))[
- default:
- break;
- }
-}
+ void
+ ]b4_parser_class_name[::yydestruct_ (const char* yymsg,
+ int yytype, semantic_type* yyvaluep, location_type* yylocationp)
+ {
+ YYUSE (yylocationp);
+ YYUSE (yymsg);
+ YYUSE (yyvaluep);
+
+ YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
+
+ switch (yytype)
+ {
+ ]m4_map([b4_symbol_actions], m4_defn([b4_symbol_destructors]))[
+ default:
+ break;
+ }
+ }
-void
-yy::]b4_parser_class_name[::yypop_ (unsigned int n)
-{
- yystate_stack_.pop (n);
- yysemantic_stack_.pop (n);
- yylocation_stack_.pop (n);
-}
+ void
+ ]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_;
-}
+ std::ostream&
+ ]b4_parser_class_name[::debug_stream () const
+ {
+ return *yycdebug_;
+ }
-void
-yy::]b4_parser_class_name[::set_debug_stream (std::ostream& o)
-{
- yycdebug_ = &o;
-}
+ void
+ ]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_;
-}
+ ]b4_parser_class_name[::debug_level_type
+ ]b4_parser_class_name[::debug_level () const
+ {
+ return yydebug_;
+ }
-void
-yy::]b4_parser_class_name[::set_debug_level (debug_level_type l)
-{
- yydebug_ = l;
-}
+ void
+ ]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;
+ int
+ ]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;
+ /* State. */
+ int yyn;
+ int yylen = 0;
+ int yystate = 0;
- /* Error handling. */
- int yynerrs_ = 0;
- int yyerrstatus_ = 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 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];
- /// $$.
- semantic_type yyval;
- /// @@$.
- location_type yyloc;
+ /// $$.
+ semantic_type yyval;
+ /// @@$.
+ location_type yyloc;
- int yyresult;
+ int yyresult;
- YYCDEBUG << "Starting parse" << std::endl;
+ 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
+ /* User initialization code. */
+ b4_initial_action
m4_popdef([b4_dollar_dollar])dnl
m4_popdef([b4_at_dollar])dnl
-/* Line __line__ of yacc.c. */
+ /* 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
+ [ /* 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_locations_if([, [[location*], [&yylloc]]])dnl
m4_ifdef([b4_lex_param], [, ]b4_lex_param))[;
- }
-
-
- /* Convert token to internal form. */
- if (yychar <= yyeof_)
- {
- yychar = yytoken = yyeof_;
- YYCDEBUG << "Now at end of input." << std::endl;
- }
- else
- {
- yytoken = yytranslate_ (yychar);
- YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
- }
-
- /* If the proper action on seeing token YYTOKEN is to reduce or to
- detect an error, take that action. */
- yyn += yytoken;
- if (yyn < 0 || yylast_ < yyn || yycheck_[yyn] != yytoken)
- goto yydefault;
-
- /* Reduce or error. */
- yyn = yytable_[yyn];
- if (yyn <= 0)
- {
- if (yyn == 0 || yyn == yytable_ninf_)
+ }
+
+
+ /* Convert token to internal form. */
+ if (yychar <= yyeof_)
+ {
+ yychar = yytoken = yyeof_;
+ YYCDEBUG << "Now at end of input." << std::endl;
+ }
+ else
+ {
+ yytoken = yytranslate_ (yychar);
+ YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
+ }
+
+ /* If the proper action on seeing token YYTOKEN is to reduce or to
+ detect an error, take that action. */
+ yyn += yytoken;
+ if (yyn < 0 || yylast_ < yyn || yycheck_[yyn] != yytoken)
+ goto yydefault;
+
+ /* Reduce or error. */
+ yyn = yytable_[yyn];
+ if (yyn <= 0)
+ {
+ if (yyn == 0 || yyn == yytable_ninf_)
goto yyerrlab;
- yyn = -yyn;
- goto yyreduce;
- }
+ yyn = -yyn;
+ goto yyreduce;
+ }
+
+ /* Accept? */
+ if (yyn == yyfinal_)
+ goto yyacceptlab;
+
+ /* Shift the look-ahead token. */
+ YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
+
+ /* Discard the token being shifted unless it is eof. */
+ if (yychar != yyeof_)
+ 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:
+ `$$ = $1'. Otherwise, use the top of the stack.
+
+ Otherwise, the following line sets YYVAL to garbage.
+ This behavior is undocumented and Bison
+ users should not rely upon it. */
+ if (yylen)
+ yyval = yysemantic_stack_[yylen - 1];
+ else
+ yyval = yysemantic_stack_[0];
- /* Accept? */
- if (yyn == yyfinal_)
- goto yyacceptlab;
-
- /* Shift the look-ahead token. */
- YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
-
- /* Discard the token being shifted unless it is eof. */
- if (yychar != yyeof_)
- yychar = yyempty_;
-
- yysemantic_stack_.push (yylval);
- yylocation_stack_.push (yylloc);
-
- /* Count tokens shifted since error; after three, turn off error
- status. */
- if (yyerrstatus_)
- --yyerrstatus_;
-
- yystate = yyn;
- goto yynewstate;
-
-/*-----------------------------------------------------------.
-| yydefault -- do the default action for the current state. |
-`-----------------------------------------------------------*/
-yydefault:
- yyn = yydefact_[yystate];
- if (yyn == 0)
- goto yyerrlab;
- goto yyreduce;
-
-/*-----------------------------.
-| yyreduce -- Do a reduction. |
-`-----------------------------*/
-yyreduce:
- yylen = yyr2_[yyn];
- /* If LEN_ is nonzero, implement the default value of the action:
- `$$ = $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;
+ slice<location_type, location_stack_type> slice (yylocation_stack_, yylen);
+ YYLLOC_DEFAULT (yyloc, slice, yylen);
}
-
-]/* Line __line__ of lalr1.cc. */
+ YY_REDUCE_PRINT (yyn);
+ switch (yyn)
+ {
+ ]b4_actions
+ /* 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_ (yystate]dnl
+ default: break;
+ }
+ YY_SYMBOL_PRINT ("-> $$ =", yyr1_[yyn], &yyval, &yyloc);
+
+ yypop_ (yylen);
+ yylen = 0;
+ YY_STACK_PRINT ();
+
+ yysemantic_stack_.push (yyval);
+ yylocation_stack_.push (yyloc);
+
+ /* Shift the result of the reduction. */
+ yyn = yyr1_[yyn];
+ yystate = yypgoto_[yyn - yyntokens_] + yystate_stack_[0];
+ if (0 <= yystate && yystate <= yylast_
+ && yycheck_[yystate] == yystate_stack_[0])
+ yystate = yytable_[yystate];
+ else
+ yystate = yydefgoto_[yyn - yyntokens_];
+ goto yynewstate;
+
+ /*------------------------------------.
+ | yyerrlab -- here on detecting error |
+ `------------------------------------*/
+ yyerrlab:
+ /* If not already recovering from an error, report this error. */
+ if (!yyerrstatus_)
+ {
+ ++yynerrs_;
+ error (yylloc, yysyntax_error_ (yystate]dnl
b4_error_verbose_if([, yytoken])[));
- }
+ }
- yyerror_range[0] = yylloc;
- if (yyerrstatus_ == 3)
- {
- /* If just tried and failed to reuse look-ahead token after an
+ yyerror_range[0] = yylloc;
+ if (yyerrstatus_ == 3)
+ {
+ /* If just tried and failed to reuse look-ahead 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 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];
+ /* Do not reclaim the symbols of the rule which action triggered
+ this YYERROR. */
+ yypop_ (yylen);
+ yylen = 0;
+ yystate = yystate_stack_[0];
+ goto yyerrlab1;
+
+ /*-------------------------------------------------------------.
+ | yyerrlab1 -- common code for both syntax error and YYERROR. |
+ `-------------------------------------------------------------*/
+ yyerrlab1:
+ yyerrstatus_ = 3; /* Each real token shifted decrements this. */
+
+ for (;;)
+ {
+ yyn = yypact_[yystate];
+ if (yyn != yypact_ninf_)
{
yyn += yyterror_;
if (0 <= yyn && yyn <= yylast_ && yycheck_[yyn] == yyterror_)
}
}
- /* 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 ();
- }
-
- 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],
+ 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 (yychar != yyeof_ && yychar != yyempty_)
- yydestruct_ ("Cleanup: discarding lookahead", yytoken, &yylval, &yylloc);
-
- while (yystate_stack_.height () != 1)
- {
- yydestruct_ ("Cleanup: popping",
+ yystate = yyn;
+ goto yynewstate;
+
+ /* Accept. */
+ yyacceptlab:
+ yyresult = 0;
+ goto yyreturn;
+
+ /* Abort. */
+ yyabortlab:
+ yyresult = 1;
+ goto yyreturn;
+
+ yyreturn:
+ if (yychar != yyeof_ && yychar != yyempty_)
+ yydestruct_ ("Cleanup: discarding lookahead", yytoken, &yylval, &yylloc);
+
+ /* Do not reclaim the symbols of the rule which action triggered
+ this YYABORT or YYACCEPT. */
+ yypop_ (yylen);
+ while (yystate_stack_.height () != 1)
+ {
+ yydestruct_ ("Cleanup: popping",
yystos_[yystate_stack_[0]],
&yysemantic_stack_[0],
&yylocation_stack_[0]);
- yypop_ ();
- }
+ yypop_ ();
+ }
- return yyresult;
-}
+ return yyresult;
+ }
-// Generate an error message.
-std::string
-yy::]b4_parser_class_name[::yysyntax_error_ (int yystate]dnl
+ // Generate an error message.
+ std::string
+ ]b4_parser_class_name[::yysyntax_error_ (int yystate]dnl
b4_error_verbose_if([, int tok])[)
-{
- std::string res;
+ {
+ std::string res;
+ YYUSE (yystate);
#if YYERROR_VERBOSE
- int yyn = yypact_[yystate];
- if (yypact_ninf_ < yyn && yyn < yylast_)
- {
- /* Start YYX at -YYN if negative to avoid negative indexes in
- YYCHECK. */
- int yyxbegin = yyn < 0 ? -yyn : 0;
-
- /* Stay within bounds of both yycheck and yytname. */
- int yychecklim = yylast_ - yyn;
- 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
+ int yyn = yypact_[yystate];
+ if (yypact_ninf_ < yyn && yyn <= yylast_)
+ {
+ /* Start YYX at -YYN if negative to avoid negative indexes in
+ YYCHECK. */
+ int yyxbegin = yyn < 0 ? -yyn : 0;
+
+ /* Stay within bounds of both yycheck and yytname. */
+ int yychecklim = yylast_ - yyn + 1;
+ int yyxend = yychecklim < yyntokens_ ? yychecklim : yyntokens_;
+ int count = 0;
+ for (int x = yyxbegin; x < yyxend; ++x)
+ if (yycheck_[x + yyn] == x && x != yyterror_)
+ ++count;
+
+ // FIXME: This method of building the message is not compatible
+ // with internationalization. It should work like yacc.c does it.
+ // That is, first build a string that looks like this:
+ // "syntax error, unexpected %s or %s or %s"
+ // Then, invoke YY_ on this string.
+ // Finally, use the string as a format to output
+ // yytname_[tok], etc.
+ // Until this gets fixed, this message appears in English only.
+ res = "syntax error, unexpected ";
+ res += yytnamerr_ (yytname_[tok]);
+ if (count < 5)
+ {
+ count = 0;
+ for (int x = yyxbegin; x < yyxend; ++x)
+ if (yycheck_[x + yyn] == x && x != yyterror_)
+ {
+ res += (!count++) ? ", expecting " : " or ";
+ res += yytnamerr_ (yytname_[x]);
+ }
+ }
+ }
+ else
#endif
- res = YY_("syntax error");
- return res;
-}
+ 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[
-};
+ /* 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[
+ };
-/* YYPGOTO[NTERM-NUM]. */
-const ]b4_int_type_for([b4_pgoto])[
-yy::]b4_parser_class_name[::yypgoto_[] =
-{
- ]b4_pgoto[
-};
+ /* YYDEFACT[S] -- default rule to reduce with in state S when YYTABLE
+ doesn't specify something else to do. Zero means the default is an
+ error. */
+ const ]b4_int_type_for([b4_defact])[
+ ]b4_parser_class_name[::yydefact_[] =
+ {
+ ]b4_defact[
+ };
-/* 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[
-};
+ /* YYPGOTO[NTERM-NUM]. */
+ const ]b4_int_type_for([b4_pgoto])[
+ ]b4_parser_class_name[::yypgoto_[] =
+ {
+ ]b4_pgoto[
+ };
-/* YYCHECK. */
-const ]b4_int_type_for([b4_check])[
-yy::]b4_parser_class_name[::yycheck_[] =
-{
- ]b4_check[
-};
+ /* YYDEFGOTO[NTERM-NUM]. */
+ const ]b4_int_type_for([b4_defgoto])[
+ ]b4_parser_class_name[::yydefgoto_[] =
+ {
+ ]b4_defgoto[
+ };
-/* 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[
-};
+ /* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If
+ positive, shift that token. If negative, reduce the rule which
+ number is the opposite. If zero, do what YYDEFACT says. */
+ const ]b4_int_type(b4_table_ninf, b4_table_ninf) b4_parser_class_name::yytable_ninf_ = b4_table_ninf[;
+ const ]b4_int_type_for([b4_table])[
+ ]b4_parser_class_name[::yytable_[] =
+ {
+ ]b4_table[
+ };
+
+ /* YYCHECK. */
+ const ]b4_int_type_for([b4_check])[
+ ]b4_parser_class_name[::yycheck_[] =
+ {
+ ]b4_check[
+ };
+
+ /* STOS_[STATE-NUM] -- The (internal number of the) accessing
+ symbol of state STATE-NUM. */
+ const ]b4_int_type_for([b4_stos])[
+ ]b4_parser_class_name[::yystos_[] =
+ {
+ ]b4_stos[
+ };
#if YYDEBUG
-/* TOKEN_NUMBER_[YYLEX-NUM] -- Internal symbol number corresponding
- to YYLEX-NUM. */
-const ]b4_int_type_for([b4_toknum])[
-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[
-};
+ /* YYRHS -- A `-1'-separated list of the rules' RHS. */
+ const ]b4_parser_class_name[::rhs_number_type
+ ]b4_parser_class_name[::yyrhs_[] =
+ {
+ ]b4_rhs[
+ };
-/* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
- YYRHS. */
-const ]b4_int_type_for([b4_prhs])[
-yy::]b4_parser_class_name[::yyprhs_[] =
-{
- ]b4_prhs[
-};
+ /* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
+ YYRHS. */
+ const ]b4_int_type_for([b4_prhs])[
+ ]b4_parser_class_name[::yyprhs_[] =
+ {
+ ]b4_prhs[
+ };
-/* YYRLINE[YYN] -- Source line where rule number YYN was defined. */
-const ]b4_int_type_for([b4_rline])[
-yy::]b4_parser_class_name[::yyrline_[] =
-{
- ]b4_rline[
-};
+ /* 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
-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;
-}
+ // 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
-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;
-}
+ // 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 << "), ";
+ /* 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. */
-yy::]b4_parser_class_name[::token_number_type
-yy::]b4_parser_class_name[::yytranslate_ (int token)
-{
- static
- const token_number_type
- translate_table[] =
+ /* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */
+ ]b4_parser_class_name[::token_number_type
+ ]b4_parser_class_name[::yytranslate_ (int t)
{
- ]b4_translate[
- };
- if ((unsigned int) token <= yyuser_token_number_max_)
- return translate_table[token];
- else
- return yyundef_token_;
-}
+ 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 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 ]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[;
-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[;
+} // namespace ]b4_namespace[
]b4_epilogue
dnl
@output b4_dir_prefix[]stack.hh
-b4_copyright([stack handling for Bison C++ parsers], [2002, 2003, 2004, 2005])[
+b4_copyright([Stack handling for Bison parsers in C++],
+ [2002, 2003, 2004, 2005, 2006])[
#ifndef BISON_STACK_HH
# define BISON_STACK_HH
#include <deque>
-namespace yy
+namespace ]b4_namespace[
{
template <class T, class S = std::deque<T> >
class stack
projects / bison.git / blobdiff