X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/db7e5eb5ef7500d9a4dd98a67909d0cf9fc3b025..cac9e09bbf68269173df301cd06ad40b904d11ec:/data/lalr1.cc
diff --git a/data/lalr1.cc b/data/lalr1.cc
index 25b9160c..ae5beac7 100644
--- a/data/lalr1.cc
+++ b/data/lalr1.cc
@@ -1,29 +1,120 @@
-m4_divert(-1)
-
# C++ skeleton for Bison
-# Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008
+# Free Software Foundation, Inc.
-# This program is free software; you can redistribute it and/or modify
+# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
+# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
-
+#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
-
+#
# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-# 02110-1301 USA
+# along with this program. If not, see .
m4_include(b4_pkgdatadir/[c++.m4])
+m4_pushdef([b4_copyright_years],
+ [2002, 2003, 2004, 2005, 2006, 2007, 2008])
+
+# How the semantic value is extracted when using variants.
+b4_variant_if([
+ # b4_symbol_value(VAL, [TYPE])
+ # ----------------------------
+ m4_define([b4_symbol_value],
+ [m4_ifval([$2],
+ [$1.as<$2>()],
+ [$1])])
+]) # b4_variant_if
+
+
+# b4_symbol_actions(FILENAME, LINENO,
+# SYMBOL-TAG, SYMBOL-NUM,
+# SYMBOL-ACTION, SYMBOL-TYPENAME)
+# -------------------------------------------------
+# Same as in C, but using references instead of pointers.
+m4_define([b4_symbol_actions],
+[m4_pushdef([b4_dollar_dollar],
+ [b4_symbol_value([yyvalue], [$6])])dnl
+m4_pushdef([b4_at_dollar], [yylocation])dnl
+ case $4: // $3
+b4_syncline([$2], [$1])
+ $5;
+b4_syncline([@oline@], [@ofile@])
+ break;
+m4_popdef([b4_at_dollar])dnl
+m4_popdef([b4_dollar_dollar])dnl
+])
+
+
+# b4_symbol_action_(SYMBOL-TAG, SYMBOL-NUM, SYMBOL-TYPENAME)
+# ----------------------------------------------------------
+# Invoke b4_dollar_dollar(SYMBOL_TYPENAME) for each symbol.
+m4_define([b4_symbol_action_],
+[m4_ifval($3,
+[ case $2: // $1
+ b4_dollar_dollar($@);
+ break;
+])])
+
+
+# b4_symbol_variant(YYTYPE, YYVAL, ACTION)
+# ----------------------------------------
+# Run some ACTION ("build", or "destroy") on YYVAL of symbol type
+# YYTYPE.
+m4_define([b4_symbol_variant],
+[m4_pushdef([b4_dollar_dollar],
+ [$2.$3<$][3>()])dnl
+ switch ($1)
+ {
+m4_map([b4_symbol_action_], m4_defn([b4_type_names]))
+ default:
+ break;
+ }
+m4_popdef([b4_dollar_dollar])dnl
+])
+
+
+# _b4_char_sizeof_counter
+# -----------------------
+# A counter used by _b4_char_sizeof_dummy to create fresh symbols.
+m4_define([_b4_char_sizeof_counter],
+[0])
+
+# _b4_char_sizeof_dummy
+# ---------------------
+# At each call return a new C++ identifier.
+m4_define([_b4_char_sizeof_dummy],
+[m4_define([_b4_char_sizeof_counter], m4_incr(_b4_char_sizeof_counter))dnl
+dummy[]_b4_char_sizeof_counter])
+
+
+# b4_char_sizeof(SYMBOL-TAG, SYMBOL-NUM, SYMBOL-TYPENAME)
+# -------------------------------------------------------
+# To be mapped on the list of type names to produce:
+#
+# char dummy1[sizeof(type_name_1)];
+# char dummy2[sizeof(type_name_2)];
+#
+# for defined type names.
+# $3 is doubly-quoted, do not quote it again.
+m4_define([b4_char_sizeof],
+[m4_ifval($3,
+[
+ char _b4_char_sizeof_dummy@{sizeof($3)@}; // $1])dnl
+])
+
+
+m4_define([b4_parser_class_name],
+ [b4_percent_define_get([[parser_class_name]])])
+
# The header is mandatory.
b4_defines_if([],
- [m4_fatal(b4_skeleton[: using %defines is mandatory])])
+ [b4_fatal([b4_skeleton[: using %%defines is mandatory]])])
# Backward compatibility.
m4_define([b4_location_constructors])
@@ -31,11 +122,10 @@ m4_include(b4_pkgdatadir/[location.cc])
# We do want M4 expansion after # for CPP macros.
m4_changecom()
-m4_divert(0)dnl
+m4_divert_push(0)dnl
b4_defines_if(
-[@output @output_header_name@
-b4_copyright([Skeleton interface for Bison LALR(1) parsers in C++],
- [2002, 2003, 2004, 2005, 2006])
+[@output(b4_spec_defines_file@)
+b4_copyright([Skeleton interface for Bison LALR(1) parsers in C++])
dnl FIXME: This is wrong, we want computed header guards.
[
/* C++ LALR(1) parser skeleton written by Akim Demaille. */
@@ -43,22 +133,63 @@ dnl FIXME: This is wrong, we want computed header guards.
#ifndef PARSER_HEADER_H
# define PARSER_HEADER_H
+]b4_percent_code_get([[requires]])[
+
#include
#include
#include "stack.hh"
-namespace ]b4_namespace[
-{
+]b4_namespace_open[
class position;
class location;
-}
+]b4_variant_if([[
+ /// A char[S] buffer to store and retrieve objects.
+ ///
+ /// Sort of a variant, but does not keep track of the nature
+ /// of the stored data, since that knowledge is available
+ /// via the current state.
+ template
+ struct variant
+ {
+ /// Instantiate a \a T in here.
+ template
+ inline void
+ build()
+ {
+ new (buffer) T;
+ }
+
+ /// Destroy the stored \a T.
+ template
+ inline void
+ destroy()
+ {
+ reinterpret_cast(buffer).~T();
+ }
-]m4_ifdef([b4_start_header],
-[[/* Copy the %start-header blocks. */
-]b4_user_start_header])[
+ /// Accessor to a built \a T.
+ template
+ inline T&
+ as()
+ {
+ return reinterpret_cast(buffer);
+ }
-]dnl Include location.hh here: it might depend on headers included above.
-[#include "location.hh"
+ /// Const accessor to a built \a T (for %printer).
+ template
+ inline const T&
+ as() const
+ {
+ return reinterpret_cast(buffer);
+ }
+
+ /// A buffer large enough to store any of the semantic values.
+ char buffer[S];
+ };
+]])[
+]b4_namespace_close[
+
+#include "location.hh"
/* Enabling traces. */
#ifndef YYDEBUG
@@ -97,27 +228,34 @@ do { \
} while (false)
#endif
-namespace ]b4_namespace[
-{
+]b4_namespace_open[
/// A Bison parser.
class ]b4_parser_class_name[
{
public:
- /// Symbol semantic values.
#ifndef YYSTYPE
-]m4_ifdef([b4_stype],
+]b4_variant_if(
+[ /// An auxiliary type to compute the largest semantic type.
+ union union_type
+ {]m4_map([b4_char_sizeof], m4_defn([b4_type_names]))[
+ };
+
+ /// Symbol semantic values.
+ typedef variant semantic_type;],
+[ /// Symbol semantic values.
+m4_ifdef([b4_stype],
[ union semantic_type
-b4_user_stype
- ;],
+ {b4_user_stype
+ };],
[m4_if(b4_tag_seen_flag, 0,
[[ typedef int semantic_type;]],
-[[ typedef YYSTYPE semantic_type;]])])[
+[[ typedef YYSTYPE semantic_type;]])])])[
#else
typedef YYSTYPE semantic_type;
#endif
/// Symbol locations.
- typedef ]b4_location_type[ location_type;
+ typedef ]b4_percent_define_get([[location_type]])[ location_type;
/// Tokens.
struct token
{
@@ -134,6 +272,7 @@ b4_user_stype
/// \returns 0 iff parsing succeeded.
virtual int parse ();
+#if YYDEBUG
/// The current debugging stream.
std::ostream& debug_stream () const;
/// Set the current debugging stream.
@@ -145,6 +284,7 @@ b4_user_stype
debug_level_type debug_level () const;
/// Set the current debugging level.
void set_debug_level (debug_level_type l);
+#endif
private:
/// Report a syntax error.
@@ -161,19 +301,19 @@ 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.
+ /// \param yyvalue Its semantic value.
+ /// \param yylocation Its location.
virtual void yy_symbol_value_print_ (int yytype,
- const semantic_type* yyvaluep,
- const location_type* yylocationp);
+ const semantic_type& yyvalue,
+ const location_type& yylocation);
/// \brief Report a symbol on the debug stream.
/// \param yytype The token type.
- /// \param yyvaluep Its semantic value.
- /// \param yylocationp Its location.
+ /// \param yyvalue Its semantic value.
+ /// \param yylocation Its location.
virtual void yy_symbol_print_ (int yytype,
- const semantic_type* yyvaluep,
- const location_type* yylocationp);
-#endif /* ! YYDEBUG */
+ const semantic_type& yyvalue,
+ const location_type& yylocation);
+#endif
/// State numbers.
@@ -250,6 +390,10 @@ b4_error_verbose_if([, int tok])[);
virtual void yy_reduce_print_ (int r);
/// Print the state stack on the debug stream.
virtual void yystack_print_ ();
+
+ /* Debugging. */
+ int yydebug_;
+ std::ostream* yycdebug_;
#endif
/// Convert a scanner token number \a t to a symbol number.
@@ -258,12 +402,17 @@ b4_error_verbose_if([, int tok])[);
/// \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.
+ /// \param yyvalue Its semantic value.
+ /// \param yylocation Its location.
inline void yydestruct_ (const char* yymsg,
int yytype,
- semantic_type* yyvaluep,
- location_type* yylocationp);
+ semantic_type& yyvalue,
+ location_type& yylocation);
+
+ /// Push a new state on the stack.
+ /// \warning the contents of \a v is stolen.
+ inline void yypush_ (state_type s,
+ semantic_type& v, const location_type& l);
/// Pop \a n symbols the three stacks.
inline void yypop_ (unsigned int n = 1);
@@ -280,47 +429,41 @@ b4_error_verbose_if([, int tok])[);
static const int yyntokens_;
static const unsigned int yyuser_token_number_max_;
static const token_number_type yyundef_token_;
-
- /* Debugging. */
- int yydebug_;
- std::ostream* yycdebug_;
-
]b4_parse_param_vars[
};
-}
+]b4_namespace_close[
-]m4_ifset([b4_global_tokens_and_yystype],
+]b4_percent_define_flag_if([[global_tokens_and_yystype]],
[b4_token_defines(b4_tokens)
#ifndef YYSTYPE
/* Redirection for backward compatibility. */
-# define YYSTYPE b4_namespace::b4_parser_class_name::semantic_type
+# define YYSTYPE b4_namespace_ref::b4_parser_class_name::semantic_type
#endif
])
-m4_ifdef([b4_end_header],
-[[/* Copy the %end-header blocks. */
-]b4_end_header])[]dnl
+b4_percent_code_get([[provides]])[]dnl
[#endif /* ! defined PARSER_HEADER_H */]
])dnl
-@output @output_parser_name@
-b4_copyright([Skeleton implementation for Bison LALR(1) parsers in C++],
- [2002, 2003, 2004, 2005, 2006])
+@output(b4_parser_file_name@)
+b4_copyright([Skeleton implementation for Bison LALR(1) parsers in C++])
+b4_percent_code_get([[top]])[]dnl
m4_if(b4_prefix, [yy], [],
[
// Take the name prefix into account.
#define yylex b4_prefix[]lex])[
/* First part of user declarations. */
-]b4_pre_prologue
+]b4_user_pre_prologue
-b4_defines_if([
-#include @output_header_name@])[
+b4_defines_if([[
+#include "@basename(]b4_spec_defines_file[@)"]])[
/* User implementation prologue. */
-]b4_user_post_prologue[
+]b4_user_post_prologue
+b4_percent_code_get[]dnl
-#ifndef YY_
+[#ifndef YY_
# if YYENABLE_NLS
# if ENABLE_NLS
# include /* FIXME: INFRINGES ON USER NAME SPACE */
@@ -335,12 +478,12 @@ b4_defines_if([
/* Suppress unused-variable warnings by "using" E. */
#define YYUSE(e) ((void) (e))
-/* A pseudo ostream that takes yydebug_ into account. */
-# define YYCDEBUG if (yydebug_) (*yycdebug_)
-
/* Enable debugging if requested. */
#if YYDEBUG
+/* A pseudo ostream that takes yydebug_ into account. */
+# define YYCDEBUG if (yydebug_) (*yycdebug_)
+
# define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
do { \
if (yydebug_) \
@@ -365,18 +508,22 @@ do { \
#else /* !YYDEBUG */
+# define YYCDEBUG if (false) std::cerr
# define YY_SYMBOL_PRINT(Title, Type, Value, Location)
# define YY_REDUCE_PRINT(Rule)
# define YY_STACK_PRINT()
#endif /* !YYDEBUG */
+#define yyerrok (yyerrstatus_ = 0)
+#define yyclearin (yychar = yyempty_)
+
#define YYACCEPT goto yyacceptlab
#define YYABORT goto yyabortlab
#define YYERROR goto yyerrorlab
+#define YYRECOVERING() (!!yyerrstatus_)
-namespace ]b4_namespace[
-{
+]b4_namespace_open[
#if YYERROR_VERBOSE
/* Return YYSTR after stripping away unnecessary quotes and
@@ -419,9 +566,12 @@ namespace ]b4_namespace[
#endif
/// 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[ (]b4_parse_param_decl[)]m4_ifset([b4_parse_param], [
+ :])[
+#if YYDEBUG
+ ]m4_ifset([b4_parse_param], [ ], [ :])[yydebug_ (false),
+ yycdebug_ (&std::cerr)]m4_ifset([b4_parse_param], [,])[
+#endif]b4_parse_param_cons[
{
}
@@ -436,10 +586,10 @@ namespace ]b4_namespace[
inline void
]b4_parser_class_name[::yy_symbol_value_print_ (int yytype,
- const semantic_type* yyvaluep, const location_type* yylocationp)
+ const semantic_type& yyvalue, const location_type& yylocation)
{
- YYUSE (yylocationp);
- YYUSE (yyvaluep);
+ YYUSE (yylocation);
+ YYUSE (yyvalue);
switch (yytype)
{
]m4_map([b4_symbol_actions], m4_defn([b4_symbol_printers]))dnl
@@ -451,25 +601,25 @@ namespace ]b4_namespace[
void
]b4_parser_class_name[::yy_symbol_print_ (int yytype,
- const semantic_type* yyvaluep, const location_type* yylocationp)
+ const semantic_type& yyvalue, const location_type& yylocation)
{
*yycdebug_ << (yytype < yyntokens_ ? "token" : "nterm")
<< ' ' << yytname_[yytype] << " ("
- << *yylocationp << ": ";
- yy_symbol_value_print_ (yytype, yyvaluep, yylocationp);
+ << yylocation << ": ";
+ yy_symbol_value_print_ (yytype, yyvalue, yylocation);
*yycdebug_ << ')';
}
-#endif /* ! YYDEBUG */
+#endif
void
]b4_parser_class_name[::yydestruct_ (const char* yymsg,
- int yytype, semantic_type* yyvaluep, location_type* yylocationp)
+ int yytype, semantic_type& yyvalue, location_type& yylocation)
{
- YYUSE (yylocationp);
YYUSE (yymsg);
- YYUSE (yyvaluep);
+ YYUSE (yyvalue);
+ YYUSE (yylocation);
- YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
+ YY_SYMBOL_PRINT (yymsg, yytype, yyvalue, yylocation);
switch (yytype)
{
@@ -479,6 +629,15 @@ namespace ]b4_namespace[
}
}
+ void
+ ]b4_parser_class_name[::yypush_ (state_type s,
+ semantic_type& v, const location_type& l)
+ {
+ yystate_stack_.push (s);
+ yysemantic_stack_.push (v);
+ yylocation_stack_.push (l);
+ }
+
void
]b4_parser_class_name[::yypop_ (unsigned int n)
{
@@ -487,6 +646,7 @@ namespace ]b4_namespace[
yylocation_stack_.pop (n);
}
+#if YYDEBUG
std::ostream&
]b4_parser_class_name[::debug_stream () const
{
@@ -511,7 +671,7 @@ namespace ]b4_namespace[
{
yydebug_ = l;
}
-
+#endif
int
]b4_parser_class_name[::parse ()
@@ -534,7 +694,7 @@ namespace ]b4_namespace[
/// Location of the lookahead.
location_type yylloc;
/// The locations where the error started and ended.
- location yyerror_range[2];
+ location_type yyerror_range[2];
/// $$.
semantic_type yyval;
@@ -560,13 +720,18 @@ m4_popdef([b4_at_dollar])])dnl
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);
+ yypush_ (yystate, yylval, yylloc);
- /* New state. */
+ // A new state was pushed on the stack.
+ // Invariant: yystate == yystack_[0].state, i.e.,
+ // yystate was just pushed onto the state stack.
yynewstate:
- yystate_stack_.push (yystate);
YYCDEBUG << "Entering state " << yystate << std::endl;
+
+ /* Accept? */
+ if (yystate == yyfinal_)
+ goto yyacceptlab;
+
goto yybackup;
/* Backup. */
@@ -597,7 +762,7 @@ m4_ifdef([b4_lex_param], [, ]b4_lex_param))[;
else
{
yytoken = yytranslate_ (yychar);
- YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
+ YY_SYMBOL_PRINT ("Next token is", yytoken, yylval, yylloc);
}
/* If the proper action on seeing token YYTOKEN is to reduce or to
@@ -616,19 +781,11 @@ m4_ifdef([b4_lex_param], [, ]b4_lex_param))[;
goto yyreduce;
}
- /* Accept? */
- if (yyn == yyfinal_)
- goto yyacceptlab;
-
/* Shift the lookahead token. */
- YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
+ 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);
+ /* Discard the token being shifted. */
+ yychar = yyempty_;
/* Count tokens shifted since error; after three, turn off error
status. */
@@ -636,6 +793,7 @@ m4_ifdef([b4_lex_param], [, ]b4_lex_param))[;
--yyerrstatus_;
yystate = yyn;
+ yypush_ (yystate, yylval, yylloc);
goto yynewstate;
/*-----------------------------------------------------------.
@@ -651,7 +809,11 @@ m4_ifdef([b4_lex_param], [, ]b4_lex_param))[;
| yyreduce -- Do a reduction. |
`-----------------------------*/
yyreduce:
- yylen = yyr2_[yyn];
+ yylen = yyr2_[yyn];]b4_variant_if([
+ /* Variants are always initialized to an empty instance of the
+ correct type. The default $$=$1 rule is NOT applied when using
+ variants */
+ ]b4_symbol_variant([[yyr1_@{yyn@}]], [yyval], [build])[],[
/* If YYLEN is nonzero, implement the default value of the action:
`$$ = $1'. Otherwise, use the top of the stack.
@@ -659,9 +821,9 @@ m4_ifdef([b4_lex_param], [, ]b4_lex_param))[;
This behavior is undocumented and Bison
users should not rely upon it. */
if (yylen)
- yyval = yysemantic_stack_[yylen - 1];
+ yyval = yysemantic_stack_@{yylen - 1@};
else
- yyval = yysemantic_stack_[0];
+ yyval = yysemantic_stack_@{0@};])[
{
slice slice (yylocation_stack_, yylen);
@@ -671,17 +833,15 @@ m4_ifdef([b4_lex_param], [, ]b4_lex_param))[;
switch (yyn)
{
]b4_user_actions[
- default: break;
+ default:
+ break;
}
- YY_SYMBOL_PRINT ("-> $$ =", yyr1_[yyn], &yyval, &yyloc);
+ 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];
@@ -690,6 +850,7 @@ m4_ifdef([b4_lex_param], [, ]b4_lex_param))[;
yystate = yytable_[yystate];
else
yystate = yydefgoto_[yyn - yyntokens_];
+ yypush_ (yystate, yyval, yyloc);
goto yynewstate;
/*------------------------------------.
@@ -718,7 +879,7 @@ b4_error_verbose_if([, yytoken])[));
}
else
{
- yydestruct_ ("Error: discarding", yytoken, &yylval, &yylloc);
+ yydestruct_ ("Error: discarding", yytoken, yylval, yylloc);
yychar = yyempty_;
}
}
@@ -768,33 +929,29 @@ b4_error_verbose_if([, yytoken])[));
}
/* Pop the current state because it cannot handle the error token. */
- if (yystate_stack_.height () == 1)
+ if (yystate_stack_.size () == 1)
YYABORT;
yyerror_range[0] = yylocation_stack_[0];
yydestruct_ ("Error: popping",
yystos_[yystate],
- &yysemantic_stack_[0], &yylocation_stack_[0]);
+ 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 lookahead. 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]);
+ yysemantic_stack_[0], yylocation_stack_[0]);
yystate = yyn;
+ yypush_ (yystate, yylval, yyloc);
goto yynewstate;
/* Accept. */
@@ -808,18 +965,18 @@ b4_error_verbose_if([, yytoken])[));
goto yyreturn;
yyreturn:
- if (yychar != yyeof_ && yychar != yyempty_)
- yydestruct_ ("Cleanup: discarding lookahead", yytoken, &yylval, &yylloc);
+ if (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)
+ while (yystate_stack_.size () != 1)
{
yydestruct_ ("Cleanup: popping",
- yystos_[yystate_stack_[0]],
- &yysemantic_stack_[0],
- &yylocation_stack_[0]);
+ yystos_[yystate_stack_[0]],
+ yysemantic_stack_[0],
+ yylocation_stack_[0]);
yypop_ ();
}
@@ -1010,13 +1167,13 @@ b4_error_verbose_if([, int tok])[)
int yynrhs = yyr2_[yyrule];
/* Print the symbols being reduced, and their result. */
*yycdebug_ << "Reducing stack by rule " << yyrule - 1
- << " (line " << yylno << "), ";
+ << " (line " << yylno << "):" << std::endl;
/* The symbols being reduced. */
for (int yyi = 0; yyi < yynrhs; yyi++)
YY_SYMBOL_PRINT (" $" << yyi + 1 << " =",
yyrhs_[yyprhs_[yyrule] + yyi],
- &]b4_rhs_value(yynrhs, yyi + 1)[,
- &]b4_rhs_location(yynrhs, yyi + 1)[);
+ ]b4_rhs_value(yynrhs, yyi + 1)[,
+ ]b4_rhs_location(yynrhs, yyi + 1)[);
}
#endif // YYDEBUG
@@ -1048,21 +1205,19 @@ b4_error_verbose_if([, int tok])[)
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[;
-} // namespace ]b4_namespace[
+]b4_namespace_close[
]b4_epilogue
dnl
-@output b4_dir_prefix[]stack.hh
-b4_copyright([Stack handling for Bison parsers in C++],
- [2002, 2003, 2004, 2005, 2006])[
+@output(b4_dir_prefix[]stack.hh@)
+b4_copyright([Stack handling for Bison parsers in C++])[
#ifndef BISON_STACK_HH
# define BISON_STACK_HH
#include
-namespace ]b4_namespace[
-{
+]b4_namespace_open[
template >
class stack
{
@@ -1110,17 +1265,17 @@ namespace ]b4_namespace[
}
inline
- unsigned int
- height () const
+ typename S::size_type
+ size () const
{
return seq_.size ();
}
inline const_iterator begin () const { return seq_.rbegin (); }
- inline const_iterator end () const { return seq_.rend (); }
+ inline const_iterator end () const { return seq_.rend (); }
private:
-
+ /// The wrapped container.
S seq_;
};
@@ -1148,7 +1303,9 @@ namespace ]b4_namespace[
const S& stack_;
unsigned int range_;
};
-}
+]b4_namespace_close[
-#endif // not BISON_STACK_HH]
-m4_divert(-1)
+#endif // not BISON_STACK_HH[]dnl
+]
+m4_divert_pop(0)
+m4_popdef([b4_copyright_years])dnl