# 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])
+# 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_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. :( */
+ [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 <string>
#include <iostream>
-
-/* Using locations. */
-#define YYLSP_NEEDED ]b4_locations_flag[
+#include "stack.hh"
namespace yy
{
class location;
}
-]b4_token_enums(b4_tokens)[
-
-/* Copy the first part of user declarations. */
+/* First part of user declarations. */
]b4_pre_prologue[
]/* Line __line__ of lalr1.cc. */
b4_syncline([@oline@], [@ofile@])[
-#include "stack.hh"
-#include "location.hh"
+]dnl Include location.hh here: it might depend on headers included above.
+[#include "location.hh"
/* Enabling traces. */
#ifndef YYDEBUG
# 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-# define yystype YYSTYPE /* obsolescent; will be withdrawn */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). */
{ \
(Current).begin = (Current).end = (Rhs)[0].end; \
} \
-} while (0)
+} while (false)
#endif
namespace yy
/// A Bison parser.
class ]b4_parser_class_name[
{
+ public:
/// Symbol semantic values.
+#if ! defined (YYSTYPE)
+]m4_ifdef([b4_stype],
+[ union semantic_type
+b4_stype
+/* Line __line__ of lalr1.cc. */
+b4_syncline([@oline@], [@ofile@])
+ ;],
+[ typedef int semantic_type;])[
+#else
typedef YYSTYPE semantic_type;
+#endif
/// Symbol locations.
typedef ]b4_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[
+ /// Tokens.
+ struct token
{
- }
+ ]b4_token_enums(b4_tokens)[
+ };
- virtual ~]b4_parser_class_name[ ()
- {
- }
+ /// Build a parser object.
+ ]b4_parser_class_name[ (]b4_parse_param_decl[);
+ virtual ~]b4_parser_class_name[ ();
/// Parse.
/// \returns 0 iff parsing succeeded.
virtual 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));
+ /// \param state the state where the error occurred.
+ /// \param tok the look-ahead token.
+ virtual std::string yysyntax_error_ (int yystate]dnl
+b4_error_verbose_if([, int tok])[);
#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
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_;
};
}
+]m4_ifset([b4_global_tokens_and_yystype],
+[b4_token_defines(b4_tokens)
+
+#ifndef YYSTYPE
+ /* Redirection for backward compatibility. */
+# define YYSTYPE yy::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])
+ [2002, 2003, 2004, 2005, 2006])
m4_if(b4_prefix[], [yy], [],
[
// Take the name prefix into account.
[
#include @output_header_name@])[
+/* User implementation prologue. */
+]b4_post_prologue[
+
+]/* Line __line__ of lalr1.cc. */
+b4_syncline([@oline@], [@ofile@])[
+
#ifndef YY_
# if YYENABLE_NLS
# if ENABLE_NLS
# endif
#endif
-/* A pseudo ostream that takes yydebug_ into account. */
+/* Suppress unused-variable warnings by "using" E. */
+#define YYUSE(e) ((void) (e))
+
+/* 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 (0)
+} while (false)
# define YY_REDUCE_PRINT(Rule) \
do { \
if (yydebug_) \
- yyreduce_print_ (Rule); \
-} while (0)
+ yy_reduce_print_ (Rule); \
+} while (false)
# define YY_STACK_PRINT() \
do { \
if (yydebug_) \
yystack_print_ (); \
-} while (0)
+} while (false)
#else /* !YYDEBUG */
#endif
+namespace yy
+{
+ /// 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[
+ {
+ }
+
+ ]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)
-{
- /* 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 */
+ 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;
+ }
+ }
-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);
+ 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 */
- 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;
- int yytoken;
+ int
+ ]b4_parser_class_name[::parse ()
+ {
+ /// Look-ahead and look-ahead in internal form.
+ int yychar = yyempty_;
+ int yytoken = 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];
+ /* State. */
+ int yyn;
+ int yylen = 0;
+ int yystate = 0;
- /// $$.
- semantic_type yyval;
- /// @@$.
- location_type yyloc;
+ /* Error handling. */
+ int yynerrs_ = 0;
+ int yyerrstatus_ = 0;
- int yyresult_;
+ /// Semantic value of the look-ahead.
+ semantic_type yylval;
+ /// Location of the look-ahead.
+ location_type yylloc;
+ /// The locations where the error started and ended.
+ location yyerror_range[2];
- YYCDEBUG << "Starting parse" << std::endl;
+ /// $$.
+ semantic_type yyval;
+ /// @@$.
+ location_type yyloc;
- yynerrs_ = 0;
- yyerrstatus_ = 0;
+ int yyresult;
- /* Start. */
- yystate_ = 0;
- yychar = yyempty_;
+ 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
+ [ /* Initialize the stacks. The initial state will be pushed in
+ yynewstate, since the latter expects the semantical and the
+ location values to have been already stored, initialize these
+ stacks with a primary value. */
+ yystate_stack_ = state_stack_type (0);
+ yysemantic_stack_ = semantic_stack_type (0);
+ yylocation_stack_ = location_stack_type (0);
+ yysemantic_stack_.push (yylval);
+ yylocation_stack_.push (yylloc);
+
+ /* New state. */
+ yynewstate:
+ yystate_stack_.push (yystate);
+ YYCDEBUG << "Entering state " << yystate << std::endl;
+ goto yybackup;
+
+ /* Backup. */
+ yybackup:
+
+ /* Try to take a decision without look-ahead. */
+ yyn = yypact_[yystate];
+ if (yyn == yypact_ninf_)
+ goto yydefault;
+
+ /* Read a look-ahead token. */
+ if (yychar == yyempty_)
+ {
+ YYCDEBUG << "Reading a token: ";
+ yychar = ]b4_c_function_call([yylex], [int],
+ [[YYSTYPE*], [&yylval]][]dnl
b4_location_if([, [[location*], [&yylloc]]])dnl
m4_ifdef([b4_lex_param], [, ]b4_lex_param))[;
- }
-
-
- /* 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 ILOOKA_ is to reduce or to
- detect an error, take that action. */
- yyn_ += yytoken;
- if (yyn_ < 0 || yylast_ < yyn_ || yycheck_[yyn_] != yytoken)
- goto yydefault;
+ }
+
+
+ /* 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;
+ }
+
+ /* 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:
+ `$$ = $1'. Otherwise, use the top of the stack.
+
+ Otherwise, the following line sets YYVAL to garbage.
+ This behavior is undocumented and Bison
+ users should not rely upon it. */
+ if (yylen)
+ yyval = yysemantic_stack_[yylen - 1];
+ else
+ yyval = yysemantic_stack_[0];
- /* Reduce or error. */
- yyn_ = yytable_[yyn_];
- if (yyn_ < 0)
{
- if (yyn_ == yytable_ninf_)
- goto yyerrlab;
- else
- {
- yyn_ = -yyn_;
- goto yyreduce;
- }
+ slice<location_type, location_stack_type> slice (yylocation_stack_, yylen);
+ YYLLOC_DEFAULT (yyloc, slice, yylen);
}
- else if (yyn_ == 0)
- goto yyerrlab;
-
- /* Accept? */
- if (yyn_ == yyfinal_)
- goto yyacceptlab;
-
- /* Shift the look-ahead token. */
- YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
-
- /* Discard the token being shifted unless it is eof. */
- if (yychar != yyeof_)
- yychar = yyempty_;
-
- yysemantic_stack_.push (yylval);
- yylocation_stack_.push (yylloc);
-
- /* Count tokens shifted since error; after three, turn off error
- status. */
- if (yyerrstatus_)
- --yyerrstatus_;
-
- yystate_ = yyn_;
- goto yynewstate;
-
-/*-----------------------------------------------------------.
-| yydefault -- do the default action for the current state. |
-`-----------------------------------------------------------*/
-yydefault:
- yyn_ = yydefact_[yystate_];
- if (yyn_ == 0)
- goto yyerrlab;
- goto yyreduce;
-
-/*-----------------------------.
-| yyreduce -- Do a reduction. |
-`-----------------------------*/
-yyreduce:
- yylen_ = yyr2_[yyn_];
- /* If LEN_ is nonzero, implement the default value of the action:
- `$$ = $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];
+ YY_REDUCE_PRINT (yyn);
+ switch (yyn)
+ {
+ ]b4_actions
+ /* Line __line__ of lalr1.cc. */
+b4_syncline([@oline@], [@ofile@])[
+ 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
+ error, discard it. */
+
+ 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];
+ /* 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_)
+ {
+ 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 (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_ ();
+ }
+
+ return yyresult;
+ }
+ // Generate an error message.
+ std::string
+ ]b4_parser_class_name[::yysyntax_error_ (int yystate]dnl
+b4_error_verbose_if([, int tok])[)
{
- slice<location_type, location_stack_type> slice (yylocation_stack_, yylen_);
- YYLLOC_DEFAULT (yyloc, slice, yylen_);
+ std::string res;
+#if YYERROR_VERBOSE
+ int yyn = yypact_[yystate];
+ if (yypact_ninf_ < yyn && yyn < yylast_)
+ {
+ /* Start YYX at -YYN if negative to avoid negative indexes in
+ YYCHECK. */
+ int yyxbegin = yyn < 0 ? -yyn : 0;
+
+ /* Stay within bounds of both yycheck and yytname. */
+ int yychecklim = yylast_ - yyn;
+ int yyxend = yychecklim < yyntokens_ ? yychecklim : yyntokens_;
+ int count = 0;
+ for (int x = yyxbegin; x < yyxend; ++x)
+ if (yycheck_[x + yyn] == x && x != yyterror_)
+ ++count;
+
+ // FIXME: This method of building the message is not compatible
+ // with internationalization. It should work like yacc.c does it.
+ // That is, first build a string that looks like this:
+ // "syntax error, unexpected %s or %s or %s"
+ // Then, invoke YY_ on this string.
+ // Finally, use the string as a format to output
+ // yytname_[tok], etc.
+ // Until this gets fixed, this message appears in English only.
+ res = "syntax error, unexpected ";
+ res += yytnamerr_ (yytname_[tok]);
+ if (count < 5)
+ {
+ count = 0;
+ for (int x = yyxbegin; x < yyxend; ++x)
+ if (yycheck_[x + yyn] == x && x != yyterror_)
+ {
+ res += (!count++) ? ", expecting " : " or ";
+ res += yytnamerr_ (yytname_[x]);
+ }
+ }
+ }
+ else
+#endif
+ res = YY_("syntax error");
+ return res;
}
- 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 (yytoken)));
- }
-
- 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_)
- {
- /* 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_)
- {
- 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 (yychar != yyeof_ && yychar != yyempty_)
- yydestruct_ ("Cleanup: discarding lookahead", yytoken, &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) b4_parser_class_name::yypact_ninf_ = b4_pact_ninf[;
+ const ]b4_int_type_for([b4_pact])[
+ ]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])[
+ ]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) 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])[
+ ]b4_parser_class_name[::yypgoto_[] =
+ {
+ ]b4_pgoto[
+ };
-/* 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])[
+ ]b4_parser_class_name[::yydefgoto_[] =
+ {
+ ]b4_defgoto[
+ };
-/* 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[
-};
+ /* 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])[
-yy::]b4_parser_class_name[::yycheck_[] =
-{
- ]b4_check[
-};
+ /* 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])[
-yy::]b4_parser_class_name[::yystos_[] =
-{
- ]b4_stos[
-};
+ /* STOS_[STATE-NUM] -- The (internal number of the) accessing
+ symbol of state STATE-NUM. */
+ const ]b4_int_type_for([b4_stos])[
+ ]b4_parser_class_name[::yystos_[] =
+ {
+ ]b4_stos[
+ };
#if YYDEBUG
-/* TOKEN_NUMBER_[YYLEX-NUM] -- Internal symbol number corresponding
- to YYLEX-NUM. */
-const ]b4_int_type_for([b4_toknum])[
-yy::]b4_parser_class_name[::yytoken_number_[] =
-{
- ]b4_toknum[
-};
+ /* TOKEN_NUMBER_[YYLEX-NUM] -- Internal symbol number corresponding
+ to YYLEX-NUM. */
+ const ]b4_int_type_for([b4_toknum])[
+ ]b4_parser_class_name[::yytoken_number_[] =
+ {
+ ]b4_toknum[
+ };
#endif
-/* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */
-const ]b4_int_type_for([b4_r1])[
-yy::]b4_parser_class_name[::yyr1_[] =
-{
- ]b4_r1[
-};
+ /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */
+ const ]b4_int_type_for([b4_r1])[
+ ]b4_parser_class_name[::yyr1_[] =
+ {
+ ]b4_r1[
+ };
-/* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */
-const ]b4_int_type_for([b4_r2])[
-yy::]b4_parser_class_name[::yyr2_[] =
-{
- ]b4_r2[
-};
+ /* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */
+ const ]b4_int_type_for([b4_r2])[
+ ]b4_parser_class_name[::yyr2_[] =
+ {
+ ]b4_r2[
+ };
#if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
-/* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
- First, the terminals, then, starting at \a yyntokens_, nonterminals. */
-const char*
-const yy::]b4_parser_class_name[::yytname_[] =
-{
- ]b4_tname[
-};
+ /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
+ First, the terminals, then, starting at \a yyntokens_, nonterminals. */
+ const char*
+ const ]b4_parser_class_name[::yytname_[] =
+ {
+ ]b4_tname[
+ };
#endif
#if YYDEBUG
-/* YYRHS -- A `-1'-separated list of the rules' RHS. */
-const yy::]b4_parser_class_name[::rhs_number_type
-yy::]b4_parser_class_name[::yyrhs_[] =
-{
- ]b4_rhs[
-};
+ /* 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 " << 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;
-}
+ // 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 token)
{
- ]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) token <= yyuser_token_number_max_)
+ return translate_table[token];
+ 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 yy
]b4_epilogue
dnl
-@output stack.hh
-b4_copyright([stack handling for Bison C++ parsers], [2002, 2003, 2004, 2005])[
+@output b4_dir_prefix[]stack.hh
+b4_copyright([stack handling for Bison C++ parsers],
+ [2002, 2003, 2004, 2005, 2006])[
#ifndef BISON_STACK_HH
# define BISON_STACK_HH
}
#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]
+m4_divert(-1)
projects / bison.git / blobdiff