m4_divert(-1)
+
# C++ skeleton for Bison
-# Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+
+# Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# 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., 59 Temple Place, Suite 330, Boston, MA
-# 02111-1307 USA
-
-## ---------------- ##
-## Default values. ##
-## ---------------- ##
-
-# Default Parser class name.
-m4_define_default([b4_parser_class_name], [Parser])
-
-
-
-## ----------------- ##
-## Semantic Values. ##
-## ----------------- ##
-
-
-# b4_lhs_value([TYPE])
-# --------------------
-# Expansion of $<TYPE>$.
-m4_define([b4_lhs_value],
-[yyval[]m4_ifval([$1], [.$1])])
-
-
-# b4_rhs_value(RULE-LENGTH, NUM, [TYPE])
-# --------------------------------------
-# Expansion of $<TYPE>NUM, where the current rule has RULE-LENGTH
-# symbols on RHS.
-m4_define([b4_rhs_value],
-[semantic_stack_@{m4_eval([$1 - $2])@}m4_ifval([$3], [.$3])])
-
-m4_define_default([b4_location_type], [Location])
-
-# b4_lhs_location()
-# -----------------
-# Expansion of @$.
-m4_define([b4_lhs_location],
-[yyloc])
-
-
-# b4_rhs_location(RULE-LENGTH, NUM)
-# ---------------------------------
-# Expansion of @NUM, where the current rule has RULE-LENGTH symbols
-# on RHS.
-m4_define([b4_rhs_location],
-[location_stack_@{m4_eval([$1 - $2])@}])
-
-
-m4_define([b4_inherit],
- [m4_ifdef([b4_root],
- [: public b4_root
-],
- [])])
-
-m4_define([b4_param],
- [m4_ifdef([b4_root],
- [,
- const Param& param],
- [])])
-
-m4_define([b4_constructor],
- [m4_ifdef([b4_root],
- [b4_root (param),
- ],
- [])])
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+# 02110-1301 USA
+m4_include(b4_pkgdatadir/[c++.m4])
+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])[
-/* FIXME: This is wrong, we want computed header guards.
- I don't know why the macros are missing now. :( */
+ [2002, 2003, 2004, 2005])
+dnl FIXME: This is wrong, we want computed header guards.
+dnl FIXME: I do not know why the macros are missing now. :(
+[
#ifndef PARSER_HEADER_H
# define PARSER_HEADER_H
-#include "stack.hh"
-#include "location.hh"
-
#include <string>
#include <iostream>
+#include "stack.hh"
-/* Using locations. */
-#define YYLSP_NEEDED ]b4_locations_flag[
-
-]b4_token_defines(b4_tokens)[
+namespace yy
+{
+ class position;
+ class location;
+}
-/* Copy the first part of user declarations. */
+/* First part of user declarations. */
]b4_pre_prologue[
]/* Line __line__ of lalr1.cc. */
b4_syncline([@oline@], [@ofile@])[
+]dnl Include location.hh here: it might depend on headers included above.
+[#include "location.hh"
+
/* Enabling traces. */
#ifndef YYDEBUG
# define YYDEBUG ]b4_debug[
#endif
-/* Enabling verbose error message. */
-#ifndef YYERROR_VERBOSE
+/* Enabling verbose error messages. */
+#ifdef YYERROR_VERBOSE
+# undef YYERROR_VERBOSE
+# define YYERROR_VERBOSE 1
+#else
# define YYERROR_VERBOSE ]b4_error_verbose[
#endif
-#ifndef YYSTYPE
-]m4_ifdef([b4_stype],
-[b4_syncline([b4_stype_line], [b4_filename])
-typedef union b4_stype yystype;
-/* Line __line__ of lalr1.cc. */
-b4_syncline([@oline@], [@ofile@])],
-[typedef int yystype;])[
-# define YYSTYPE yystype
+/* Enabling the token table. */
+#ifndef YYTOKEN_TABLE
+# define YYTOKEN_TABLE ]b4_token_table[
#endif
-/* Copy the second part of user declarations. */
-]b4_post_prologue[
+/* 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). */
-]/* Line __line__ of lalr1.cc. */
-b4_syncline([@oline@], [@ofile@])[
#ifndef YYLLOC_DEFAULT
-# define YYLLOC_DEFAULT(Current, Rhs, N) \
- Current.end = Rhs[N].end;
+# define YYLLOC_DEFAULT(Current, Rhs, N) \
+do { \
+ if (N) \
+ { \
+ (Current).begin = (Rhs)[1].begin; \
+ (Current).end = (Rhs)[N].end; \
+ } \
+ else \
+ { \
+ (Current).begin = (Current).end = (Rhs)[0].end; \
+ } \
+} while (0)
#endif
namespace yy
{
- class ]b4_parser_class_name[;
-
- template < typename P >
- struct Traits
- {
- };
-
- template < >
- struct Traits< ]b4_parser_class_name[ >
- {
- typedef ]b4_int_type_for([b4_translate])[ TokenNumberType;
- typedef ]b4_int_type_for([b4_rhs])[ RhsNumberType;
- typedef int StateType;
- typedef yystype SemanticType;
- typedef ]b4_location_type[ LocationType;
- };
-}
-namespace yy
-{
- class ]b4_parser_class_name b4_inherit[
+ /// A Bison parser.
+ class ]b4_parser_class_name[
{
public:
-
- typedef Traits< ]b4_parser_class_name[ >::TokenNumberType TokenNumberType;
- typedef Traits< ]b4_parser_class_name[ >::RhsNumberType RhsNumberType;
- typedef Traits< ]b4_parser_class_name[ >::StateType StateType;
- typedef Traits< ]b4_parser_class_name[ >::SemanticType SemanticType;
- typedef Traits< ]b4_parser_class_name[ >::LocationType LocationType;
-
- typedef Stack< StateType > StateStack;
- typedef Stack< SemanticType > SemanticStack;
- typedef Stack< LocationType > LocationStack;
-
-#if YYLSP_NEEDED
- ]b4_parser_class_name[ (bool debug,
- LocationType initlocation][]b4_param[) :
- ]b4_constructor[][debug_ (debug),
- cdebug_ (std::cerr),
- initlocation_ (initlocation)
+ /// Symbol semantic values.
+#if ! defined (YYSTYPE)
+]m4_ifdef([b4_stype],
+[b4_syncline([b4_stype_line], [b4_file_name])
+ union semantic_type b4_stype;
+/* Line __line__ of lalr1.cc. */
+b4_syncline([@oline@], [@ofile@])],
+[ typedef int semantic_type;])[
#else
- ]b4_parser_class_name[ (bool debug][]b4_param[) :
- ]b4_constructor[][debug_ (debug),
- cdebug_ (std::cerr)
+ typedef YYSTYPE semantic_type;
#endif
+ /// Symbol locations.
+ typedef ]b4_location_type[ location_type;
+ /// Tokens.
+ struct token
+ {
+ ]b4_token_enums(b4_tokens)[
+ };
+
+ /// Build a parser object.
+ ]b4_parser_class_name[ (]b4_parse_param_decl[) :
+ yydebug_ (false),
+ yycdebug_ (&std::cerr)]b4_parse_param_cons[
{
}
{
}
+ /// Parse.
+ /// \returns 0 iff parsing succeeded.
virtual int parse ();
- private:
+ /// The current debugging stream.
+ std::ostream& debug_stream () const;
+ /// Set the current debugging stream.
+ void set_debug_stream (std::ostream &);
- virtual void lex_ ();
- virtual void error_ ();
- virtual void print_ ();
+ /// Type for debugging levels.
+ typedef int debug_level_type;
+ /// The current debugging level.
+ debug_level_type debug_level () const;
+ /// Set the current debugging level.
+ void set_debug_level (debug_level_type l);
- /* Stacks. */
- StateStack state_stack_;
- SemanticStack semantic_stack_;
- LocationStack location_stack_;
+ private:
+ /// Report a syntax error.
+ /// \param loc where the syntax error is found.
+ /// \param msg a description of the syntax error.
+ virtual void error (const location_type& loc, const std::string& msg);
+ /// Generate an error message.
+ /// \param 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 on the debug stream.
+ /// \param yytype The token type.
+ /// \param yyvaluep Its semantic value.
+ /// \param yylocationp Its location.
+ virtual void yysymprint_ (int yytype,
+ const semantic_type* yyvaluep,
+ const location_type* yylocationp);
+#endif /* ! YYDEBUG */
+
+
+ /// State numbers.
+ typedef int state_type;
+ /// State stack type.
+ typedef stack<state_type> state_stack_type;
+ /// Semantic value stack type.
+ typedef stack<semantic_type> semantic_stack_type;
+ /// location stack type.
+ typedef stack<location_type> location_stack_type;
+
+ /// The state stack.
+ state_stack_type yystate_stack_;
+ /// The semantic value stack.
+ semantic_stack_type yysemantic_stack_;
+ /// The location stack.
+ location_stack_type yylocation_stack_;
+
+ /// Internal symbol numbers.
+ typedef ]b4_int_type_for([b4_translate])[ token_number_type;
/* Tables. */
- static const ]b4_int_type_for([b4_pact])[ pact_[];
- static const ]b4_int_type_for([b4_pact])[ pact_ninf_;
- static const ]b4_int_type_for([b4_defact])[ defact_[];
- static const ]b4_int_type_for([b4_pgoto])[ pgoto_[];
- static const ]b4_int_type_for([b4_defgoto])[ defgoto_[];
- static const ]b4_int_type_for([b4_table])[ table_[];
- static const ]b4_int_type_for([b4_table])[ table_ninf_;
- static const ]b4_int_type_for([b4_check])[ check_[];
- static const ]b4_int_type_for([b4_r1])[ r1_[];
- static const ]b4_int_type_for([b4_r2])[ r2_[];
-
-#if YYDEBUG || YYERROR_VERBOSE
- static const char* const name_[];
+ /// For a state, the index in \a yytable_ of its portion.
+ static const ]b4_int_type_for([b4_pact])[ yypact_[];
+ static const ]b4_int_type(b4_pact_ninf, b4_pact_ninf)[ yypact_ninf_;
+
+ /// For a state, default rule to reduce.
+ /// Unless\a yytable_ specifies something else to do.
+ /// Zero means the default is an error.
+ static const ]b4_int_type_for([b4_defact])[ yydefact_[];
+
+ static const ]b4_int_type_for([b4_pgoto])[ yypgoto_[];
+ static const ]b4_int_type_for([b4_defgoto])[ yydefgoto_[];
+
+ /// What to do in a state.
+ /// \a yytable_[yypact_[s]]: what to do in state \a s.
+ /// - if positive, shift that token.
+ /// - if negative, reduce the rule which number is the opposite.
+ /// - if zero, do what YYDEFACT says.
+ static const ]b4_int_type_for([b4_table])[ yytable_[];
+ static const ]b4_int_type(b4_table_ninf, b4_table_ninf)[ yytable_ninf_;
+
+ static const ]b4_int_type_for([b4_check])[ yycheck_[];
+
+ /// For a state, its accessing symbol.
+ static const ]b4_int_type_for([b4_stos])[ yystos_[];
+
+ /// For a rule, its LHS.
+ static const ]b4_int_type_for([b4_r1])[ yyr1_[];
+ /// For a rule, its RHS length.
+ static const ]b4_int_type_for([b4_r2])[ yyr2_[];
+
+#if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
+ /// For a symbol, its name in clear.
+ static const char* const yytname_[];
+#endif
+
+#if YYERROR_VERBOSE
+ /// Convert the symbol name \a n to a form suitable for a diagnostic.
+ virtual std::string yytnamerr_ (const char *n);
#endif
- /* More tables, for debugging. */
#if YYDEBUG
- static const RhsNumberType rhs_[];
- static const ]b4_int_type_for([b4_prhs])[ prhs_[];
- static const ]b4_int_type_for([b4_rline])[ rline_[];
- static const ]b4_int_type_for([b4_stos])[ stos_[];
- static const ]b4_int_type_for([b4_toknum])[ token_number_[];
+ /// A type to store symbol numbers and -1.
+ typedef ]b4_int_type_for([b4_rhs])[ rhs_number_type;
+ /// A `-1'-separated list of the rules' RHS.
+ static const rhs_number_type yyrhs_[];
+ /// For each rule, the index of the first RHS symbol in \a yyrhs_.
+ static const ]b4_int_type_for([b4_prhs])[ yyprhs_[];
+ /// For each rule, its source line number.
+ static const ]b4_int_type_for([b4_rline])[ yyrline_[];
+ /// For each scanner token number, its symbol number.
+ static const ]b4_int_type_for([b4_toknum])[ yytoken_number_[];
+ /// Report on the debug stream that the rule \a r is going to be reduced.
+ virtual void yyreduce_print_ (int r);
+ /// Print the state stack on the debug stream.
+ virtual void yystack_print_ ();
#endif
- /* Even more tables. */
- static inline TokenNumberType translate_ (int token);
+ /// Convert a scanner token number to a symbol number.
+ inline token_number_type yytranslate_ (int token);
+
+ /// \brief Reclaim the memory associated to a symbol.
+ /// \param yymsg Why this token is reclaimed.
+ /// \param yytype The symbol type.
+ /// \param yyvaluep Its semantic value.
+ /// \param yylocationp Its location.
+ inline void yydestruct_ (const char* yymsg,
+ int yytype,
+ semantic_type* yyvaluep,
+ location_type* yylocationp);
+
+ /// Pop \a n symbols the three stacks.
+ inline void yypop_ (unsigned int n = 1);
/* Constants. */
- static const int eof_;
+ static const int yyeof_;
/* LAST_ -- Last index in TABLE_. */
- static const int last_;
- static const int nnts_;
- static const int empty_;
- static const int final_;
- static const int terror_;
- static const int errcode_;
- static const int ntokens_;
- static const unsigned user_token_number_max_;
- static const TokenNumberType undef_token_;
-
- /* State. */
- int n_;
- int len_;
- int state_;
+ static const int yylast_;
+ static const int yynnts_;
+ static const int yyempty_;
+ static const int yyfinal_;
+ static const int yyterror_;
+ static const int yyerrcode_;
+ static const int yyntokens_;
+ static const unsigned int yyuser_token_number_max_;
+ static const token_number_type yyundef_token_;
/* Debugging. */
- int debug_;
- std::ostream &cdebug_;
+ int yydebug_;
+ std::ostream* yycdebug_;
- /* Lookahead and lookahead in internal form. */
- int looka_;
- int ilooka_;
-
- /* Message. */
- std::string message;
-
- /* Semantic value and location of lookahead token. */
- SemanticType value;
- LocationType location;
-
- /* @@$ and $$. */
- SemanticType yyval;
- LocationType yyloc;
-
- /* Initial location. */
- LocationType initlocation_;
+]b4_parse_param_vars[
};
}
+]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])
+ [2002, 2003, 2004, 2005])
+m4_if(b4_prefix[], [yy], [],
+[
+// Take the name prefix into account.
+#define yylex b4_prefix[]lex])
+m4_if(b4_defines_flag, 0, [],
+[
+#include @output_header_name@])[
-m4_if(b4_defines_flag, 0, [], [#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
+# include <libintl.h> /* FIXME: INFRINGES ON USER NAME SPACE */
+# define YY_(msgid) dgettext ("bison-runtime", msgid)
+# endif
+# endif
+# ifndef YY_
+# define YY_(msgid) msgid
+# endif
+#endif
+
+/* A pseudo ostream that takes yydebug_ into account. */
+# define YYCDEBUG \
+ for (bool yydebugcond_ = yydebug_; yydebugcond_; yydebugcond_ = false) \
+ (*yycdebug_)
/* Enable debugging if requested. */
#if YYDEBUG
-# define YYCDEBUG if (debug_) cdebug_
+
+# define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
+do { \
+ if (yydebug_) \
+ { \
+ *yycdebug_ << (Title) << ' '; \
+ yysymprint_ ((Type), (Value), (Location)); \
+ *yycdebug_ << std::endl; \
+ } \
+} while (0)
+
+# define YY_REDUCE_PRINT(Rule) \
+do { \
+ if (yydebug_) \
+ yyreduce_print_ (Rule); \
+} while (0)
+
+# define YY_STACK_PRINT() \
+do { \
+ if (yydebug_) \
+ yystack_print_ (); \
+} while (0)
+
#else /* !YYDEBUG */
-# define YYCDEBUG if (0) cdebug_
+
+# define YY_SYMBOL_PRINT(Title, Type, Value, Location)
+# define YY_REDUCE_PRINT(Rule)
+# define YY_STACK_PRINT()
+
#endif /* !YYDEBUG */
#define YYACCEPT goto yyacceptlab
#define YYABORT goto yyabortlab
-#define YYERROR goto yyerrlab1
+#define YYERROR goto yyerrorlab
+
+#if YYERROR_VERBOSE
+
+/* Return YYSTR after stripping away unnecessary quotes and
+ backslashes, so that it's suitable for yyerror. The heuristic is
+ that double-quoting is unnecessary unless the string contains an
+ apostrophe, a comma, or backslash (other than backslash-backslash).
+ YYSTR is taken from yytname. */
+std::string
+yy::]b4_parser_class_name[::yytnamerr_ (const char *yystr)
+{
+ if (*yystr == '"')
+ {
+ std::string yyr = "";
+ char const *yyp = yystr;
+
+ for (;;)
+ switch (*++yyp)
+ {
+ case '\'':
+ case ',':
+ goto do_not_strip_quotes;
+
+ case '\\':
+ if (*++yyp != '\\')
+ goto do_not_strip_quotes;
+ /* Fall through. */
+ default:
+ yyr += *yyp;
+ break;
+
+ case '"':
+ return yyr;
+ }
+ do_not_strip_quotes: ;
+ }
+
+ return yystr;
+}
+
+#endif
+
+#if YYDEBUG
+/*--------------------------------.
+| Print this symbol on YYOUTPUT. |
+`--------------------------------*/
+
+void
+yy::]b4_parser_class_name[::yysymprint_ (int yytype,
+ const semantic_type* yyvaluep, const location_type* yylocationp)
+{
+ /* Backward compatibility, but should be removed eventually. */
+ std::ostream& cdebug_ = *yycdebug_;
+
+ /* Suppress unused-variable warnings. */
+ if (false)
+ yysymprint_ (yytype + !&cdebug_, yyvaluep, yylocationp);
+
+ *yycdebug_ << (yytype < yyntokens_ ? "token" : "nterm")
+ << ' ' << yytname_[yytype] << " ("
+ << *yylocationp << ": ";
+ switch (yytype)
+ {
+]m4_map([b4_symbol_actions], m4_defn([b4_symbol_printers]))dnl
+[ default:
+ break;
+ }
+ *yycdebug_ << ')';
+}
+#endif /* ! YYDEBUG */
+
+void
+yy::]b4_parser_class_name[::yydestruct_ (const char* yymsg,
+ int yytype, semantic_type* yyvaluep, location_type* yylocationp)
+{
+ /* Suppress unused-variable warnings. */
+ if (false)
+ yydestruct_ (yymsg, yytype, yyvaluep, yylocationp);
+
+ YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
+
+ switch (yytype)
+ {
+]m4_map([b4_symbol_actions], m4_defn([b4_symbol_destructors]))[
+ default:
+ break;
+ }
+}
+
+void
+yy::]b4_parser_class_name[::yypop_ (unsigned int n)
+{
+ yystate_stack_.pop (n);
+ yysemantic_stack_.pop (n);
+ yylocation_stack_.pop (n);
+}
+
+std::ostream&
+yy::]b4_parser_class_name[::debug_stream () const
+{
+ return *yycdebug_;
+}
+
+void
+yy::]b4_parser_class_name[::set_debug_stream (std::ostream& o)
+{
+ yycdebug_ = &o;
+}
+
+
+yy::]b4_parser_class_name[::debug_level_type
+yy::]b4_parser_class_name[::debug_level () const
+{
+ return yydebug_;
+}
+
+void
+yy::]b4_parser_class_name[::set_debug_level (debug_level_type l)
+{
+ yydebug_ = l;
+}
int
yy::]b4_parser_class_name[::parse ()
{
- int nerrs = 0;
- int errstatus = 0;
+ /// Look-ahead and look-ahead in internal form.
+ int yychar = yyempty_;
+ int yytoken = 0;
+
+ /* State. */
+ int yyn;
+ int yylen;
+ int yystate = 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_type yyval;
+ /// @@$.
+ location_type yyloc;
+
+ int yyresult;
+
+ YYCDEBUG << "Starting parse" << std::endl;
- /* Initialize the stacks. The initial state will be pushed in
+]m4_ifdef([b4_initial_action], [
+m4_pushdef([b4_at_dollar], [yylloc])dnl
+m4_pushdef([b4_dollar_dollar], [yylval])dnl
+ /* User initialization code. */
+ b4_initial_action
+m4_popdef([b4_dollar_dollar])dnl
+m4_popdef([b4_at_dollar])dnl
+/* Line __line__ of yacc.c. */
+b4_syncline([@oline@], [@ofile@])])dnl
+
+[ /* Initialize the stacks. The initial state will be pushed in
yynewstate, since the latter expects the semantical and the
location values to have been already stored, initialize these
stacks with a primary value. */
- state_stack_ = StateStack (0);
- semantic_stack_ = SemanticStack (1);
- location_stack_ = LocationStack (1);
-
- /* Start. */
- state_ = 0;
- looka_ = empty_;
-#if YYLSP_NEEDED
- location = initlocation_;
-#endif
- YYCDEBUG << "Starting parse" << std::endl;
+ 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:
- state_stack_.push (state_);
- YYCDEBUG << "Entering state " << state_ << std::endl;
+yynewstate:
+ yystate_stack_.push (yystate);
+ YYCDEBUG << "Entering state " << yystate << std::endl;
goto yybackup;
/* Backup. */
- yybackup:
+yybackup:
- /* Try to take a decision without lookahead. */
- n_ = pact_[state_];
- if (n_ == pact_ninf_)
+ /* Try to take a decision without look-ahead. */
+ yyn = yypact_[yystate];
+ if (yyn == yypact_ninf_)
goto yydefault;
- /* Read a lookahead token. */
- if (looka_ == empty_)
+ /* Read a look-ahead token. */
+ if (yychar == yyempty_)
{
YYCDEBUG << "Reading a token: ";
- lex_ ();
+ 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 (looka_ <= 0)
+ if (yychar <= yyeof_)
{
- looka_ = eof_;
- ilooka_ = 0;
+ yychar = yytoken = yyeof_;
YYCDEBUG << "Now at end of input." << std::endl;
}
else
{
- ilooka_ = translate_ (looka_);
-#if YYDEBUG
- if (debug_)
- {
- YYCDEBUG << "Next token is " << looka_
- << " (" << name_[ilooka_];
- print_ ();
- YYCDEBUG << ')' << std::endl;
- }
-#endif
+ yytoken = yytranslate_ (yychar);
+ YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
}
- n_ += ilooka_;
- if (n_ < 0 || last_ < n_ || check_[n_] != ilooka_)
+ /* 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. */
- n_ = table_[n_];
- if (n_ < 0)
+ yyn = yytable_[yyn];
+ if (yyn <= 0)
{
- if (n_ == table_ninf_)
+ if (yyn == 0 || yyn == yytable_ninf_)
goto yyerrlab;
- else
- {
- n_ = -n_;
- goto yyreduce;
- }
+ yyn = -yyn;
+ goto yyreduce;
}
- else if (n_ == 0)
- goto yyerrlab;
/* Accept? */
- if (n_ == final_)
+ if (yyn == yyfinal_)
goto yyacceptlab;
- /* Shift the lookahead token. */
-#if YYDEBUG
- YYCDEBUG << "Shifting token " << looka_
- << " (" << name_[ilooka_] << "), ";
-#endif
+ /* Shift the look-ahead token. */
+ YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
/* Discard the token being shifted unless it is eof. */
- if (looka_ != eof_)
- looka_ = empty_;
+ if (yychar != yyeof_)
+ yychar = yyempty_;
- semantic_stack_.push (value);
- location_stack_.push (location);
+ yysemantic_stack_.push (yylval);
+ yylocation_stack_.push (yylloc);
/* Count tokens shifted since error; after three, turn off error
status. */
- if (errstatus)
- --errstatus;
+ if (yyerrstatus_)
+ --yyerrstatus_;
- state_ = n_;
+ yystate = yyn;
goto yynewstate;
- /* Default action. */
- yydefault:
- n_ = defact_[state_];
- if (n_ == 0)
+/*-----------------------------------------------------------.
+| yydefault -- do the default action for the current state. |
+`-----------------------------------------------------------*/
+yydefault:
+ yyn = yydefact_[yystate];
+ if (yyn == 0)
goto yyerrlab;
goto yyreduce;
- /* Reduce. */
- yyreduce:
- len_ = r2_[n_];
- if (len_)
- {
- yyval = semantic_stack_[len_ - 1];
- yyloc = location_stack_[len_ - 1];
- }
+/*-----------------------------.
+| 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 = semantic_stack_[0];
- yyloc = location_stack_[0];
- }
+ yyval = yysemantic_stack_[0];
-#if YYDEBUG
- if (debug_)
- {
- // Short files will use "unsigned char" for line numbers,
- // in which case they will be output as character litterals
- // by "<<".
- YYCDEBUG << "Reducing via rule " << n_ - 1
- << " (line " << static_cast <unsigned> (rline_[n_]) << "), ";
- for (]b4_int_type_for([b4_prhs])[ i = prhs_[n_];
- 0 <= rhs_[i]; ++i)
- YYCDEBUG << name_[rhs_[i]] << ' ';
- YYCDEBUG << "-> " << name_[r1_[n_]] << std::endl;
- }
-#endif
-
- if (len_)
- {
- Slice< LocationType, LocationStack > slice (location_stack_, len_);
- YYLLOC_DEFAULT (yyloc, slice, len_);
- }
-
- switch (n_)
+ {
+ slice<location_type, location_stack_type> slice (yylocation_stack_, yylen);
+ YYLLOC_DEFAULT (yyloc, slice, yylen);
+ }
+ YY_REDUCE_PRINT (yyn);
+ switch (yyn)
{
]b4_actions[
+ default: break;
}
]/* Line __line__ of lalr1.cc. */
b4_syncline([@oline@], [@ofile@])[
- state_stack_.pop (len_);
- semantic_stack_.pop (len_);
- location_stack_.pop (len_);
+ yypop_ (yylen);
-#if YYDEBUG
- if (debug_)
- {
- YYCDEBUG << "state stack now";
- for (StateStack::ConstIterator i = state_stack_.begin ();
- i != state_stack_.end (); ++i)
- YYCDEBUG << ' ' << *i;
- YYCDEBUG << std::endl;
- }
-#endif
+ YY_STACK_PRINT ();
- semantic_stack_.push (yyval);
- location_stack_.push (yyloc);
+ yysemantic_stack_.push (yyval);
+ yylocation_stack_.push (yyloc);
/* Shift the result of the reduction. */
- n_ = r1_[n_];
- state_ = pgoto_[n_ - ntokens_] + state_stack_[0];
- if (0 <= state_ && state_ <= last_ && check_[state_] == state_stack_[0])
- state_ = table_[state_];
+ yyn = yyr1_[yyn];
+ yystate = yypgoto_[yyn - yyntokens_] + yystate_stack_[0];
+ if (0 <= yystate && yystate <= yylast_
+ && yycheck_[yystate] == yystate_stack_[0])
+ yystate = yytable_[yystate];
else
- state_ = defgoto_[n_ - ntokens_];
+ yystate = yydefgoto_[yyn - yyntokens_];
goto yynewstate;
- /* Report and recover from errors. This is very incomplete. */
- yyerrlab:
+/*------------------------------------.
+| yyerrlab -- here on detecting error |
+`------------------------------------*/
+yyerrlab:
/* If not already recovering from an error, report this error. */
- if (!errstatus)
+ if (!yyerrstatus_)
{
- ++nerrs;
-
-#if YYERROR_VERBOSE
- n_ = pact_[state_];
- if (pact_ninf_ < n_ && n_ < last_)
- {
- message = "syntax error, unexpected ";
- message += name_[ilooka_];
- {
- int count = 0;
- for (int x = (n_ < 0 ? -n_ : 0); x < ntokens_ + nnts_; ++x)
- if (check_[x + n_] == x && x != terror_)
- ++count;
- if (count < 5)
- {
- count = 0;
- for (int x = (n_ < 0 ? -n_ : 0); x < ntokens_ + nnts_; ++x)
- if (check_[x + n_] == x && x != terror_)
- {
- message += (!count++) ? ", expecting " : " or ";
- message += name_[x];
- }
- }
- }
- }
- else
-#endif
- message = "syntax error";
- error_ ();
+ ++yynerrs_;
+ error (yylloc, yysyntax_error_ (yystate]dnl
+b4_error_verbose_if([, yytoken])[));
}
- goto yyerrlab1;
-
- /*----------------------------------------------------.
- | yyerrlab1 -- error raised explicitly by an action. |
- `----------------------------------------------------*/
- yyerrlab1:
- if (errstatus == 3)
+ yyerror_range[0] = yylloc;
+ if (yyerrstatus_ == 3)
{
- /* If just tried and failed to reuse lookahead token after an
+ /* If just tried and failed to reuse look-ahead token after an
error, discard it. */
- /* Return failure if at end of input. */
- if (looka_ == eof_)
- goto yyabortlab;
-#if YYDEBUG
- YYCDEBUG << "Discarding token " << looka_
- << " (" << name_[ilooka_] << ")." << std::endl;
-#endif
- looka_ = empty_;
+ 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 lookahead token after shifting the error
+ /* Else will try to reuse look-ahead token after shifting the error
token. */
+ goto yyerrlab1;
+
- errstatus = 3;
+/*---------------------------------------------------.
+| 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 (;;)
{
- n_ = pact_[state_];
- if (n_ != pact_ninf_)
+ yyn = yypact_[yystate];
+ if (yyn != yypact_ninf_)
{
- n_ += terror_;
- if (0 <= n_ && n_ <= last_ && check_[n_] == terror_)
+ yyn += yyterror_;
+ if (0 <= yyn && yyn <= yylast_ && yycheck_[yyn] == yyterror_)
{
- n_ = table_[n_];
- if (0 < n_)
+ yyn = yytable_[yyn];
+ if (0 < yyn)
break;
}
}
/* Pop the current state because it cannot handle the error token. */
- if (state_stack_.height () == 1)
- goto yyabortlab;
-
-#if YYDEBUG
- if (debug_)
- {
- if (stos_[state_] < ntokens_)
- {
- YYCDEBUG << "Error: popping token "
- << token_number_[stos_[state_]]
- << " (" << name_[stos_[state_]];
-# ifdef YYPRINT
- YYPRINT (stderr, token_number_[stos_[state_]],
- semantic_stack_.top ());
-# endif
- YYCDEBUG << ')' << std::endl;
- }
- else
- {
- YYCDEBUG << "Error: popping nonterminal ("
- << name_[stos_[state_]] << ')' << std::endl;
- }
- }
-#endif
-
- state_ = (state_stack_.pop (), state_stack_[0]);
- semantic_stack_.pop ();
- location_stack_.pop ();;
-
-#if YYDEBUG
- if (debug_)
- {
- YYCDEBUG << "Error: state stack now";
- for (StateStack::ConstIterator i = state_stack_.begin ();
- i != state_stack_.end (); ++i)
- YYCDEBUG << ' ' << *i;
- YYCDEBUG << std::endl;
- }
-#endif
+ 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 (n_ == final_)
+ if (yyn == yyfinal_)
goto yyacceptlab;
- YYCDEBUG << "Shifting error token, ";
+ 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);
- semantic_stack_.push (value);
- location_stack_.push (location);
+ /* Shift the error token. */
+ YY_SYMBOL_PRINT ("Shifting", yystos_[yyn],
+ &yysemantic_stack_[0], &yylocation_stack_[0]);
- state_ = n_;
+ yystate = yyn;
goto yynewstate;
/* Accept. */
- yyacceptlab:
- return 0;
+yyacceptlab:
+ yyresult = 0;
+ goto yyreturn;
/* Abort. */
- yyabortlab:
- return 1;
+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;
}
-void
-yy::]b4_parser_class_name[::lex_ ()
+// Generate an error message.
+std::string
+yy::]b4_parser_class_name[::yysyntax_error_ (int yystate]dnl
+b4_error_verbose_if([, int tok])[)
{
-#if YYLSP_NEEDED
- looka_ = yylex (&value, &location);
-#else
- looka_ = yylex (&value);
+ 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;
}
+
/* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
STATE-NUM. */
-const ]b4_int_type_for([b4_pact]) yy::b4_parser_class_name::pact_ninf_ = b4_pact_ninf[;
+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[::pact_[] =
+yy::]b4_parser_class_name[::yypact_[] =
{
]b4_pact[
};
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[::defact_[] =
+yy::]b4_parser_class_name[::yydefact_[] =
{
]b4_defact[
};
/* YYPGOTO[NTERM-NUM]. */
const ]b4_int_type_for([b4_pgoto])[
-yy::]b4_parser_class_name[::pgoto_[] =
+yy::]b4_parser_class_name[::yypgoto_[] =
{
]b4_pgoto[
};
/* YYDEFGOTO[NTERM-NUM]. */
const ]b4_int_type_for([b4_defgoto])[
-yy::]b4_parser_class_name[::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_for([b4_table]) yy::b4_parser_class_name::table_ninf_ = b4_table_ninf[;
+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[::table_[] =
+yy::]b4_parser_class_name[::yytable_[] =
{
]b4_table[
};
/* YYCHECK. */
const ]b4_int_type_for([b4_check])[
-yy::]b4_parser_class_name[::check_[] =
+yy::]b4_parser_class_name[::yycheck_[] =
{
]b4_check[
};
-#if YYDEBUG
/* 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[::stos_[] =
+yy::]b4_parser_class_name[::yystos_[] =
{
]b4_stos[
};
-/* TOKEN_NUMBER_[YYLEX-NUM] -- Internal token number corresponding
+#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[::token_number_[] =
+yy::]b4_parser_class_name[::yytoken_number_[] =
{
]b4_toknum[
};
/* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */
const ]b4_int_type_for([b4_r1])[
-yy::]b4_parser_class_name[::r1_[] =
+yy::]b4_parser_class_name[::yyr1_[] =
{
]b4_r1[
};
/* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */
const ]b4_int_type_for([b4_r2])[
-yy::]b4_parser_class_name[::r2_[] =
+yy::]b4_parser_class_name[::yyr2_[] =
{
]b4_r2[
};
-#if YYDEBUG || YYERROR_VERBOSE
+#if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
/* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
- First, the terminals, then, starting at YYNTOKENS, nonterminals. */
+ First, the terminals, then, starting at \a yyntokens_, nonterminals. */
const char*
-const yy::]b4_parser_class_name[::name_[] =
+const yy::]b4_parser_class_name[::yytname_[] =
{
]b4_tname[
};
#if YYDEBUG
/* YYRHS -- A `-1'-separated list of the rules' RHS. */
-const yy::]b4_parser_class_name[::RhsNumberType
-yy::]b4_parser_class_name[::rhs_[] =
+const yy::]b4_parser_class_name[::rhs_number_type
+yy::]b4_parser_class_name[::yyrhs_[] =
{
]b4_rhs[
};
/* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
YYRHS. */
const ]b4_int_type_for([b4_prhs])[
-yy::]b4_parser_class_name[::prhs_[] =
+yy::]b4_parser_class_name[::yyprhs_[] =
{
]b4_prhs[
};
-/* YYRLINE[YYN] -- source line where rule number YYN was defined. */
+/* YYRLINE[YYN] -- Source line where rule number YYN was defined. */
const ]b4_int_type_for([b4_rline])[
-yy::]b4_parser_class_name[::rline_[] =
+yy::]b4_parser_class_name[::yyrline_[] =
{
]b4_rline[
};
-#endif
+
+// Print the state stack on the debug stream.
+void
+yy::]b4_parser_class_name[::yystack_print_ ()
+{
+ *yycdebug_ << "Stack now";
+ for (state_stack_type::const_iterator i = yystate_stack_.begin ();
+ i != yystate_stack_.end (); ++i)
+ *yycdebug_ << ' ' << *i;
+ *yycdebug_ << std::endl;
+}
+
+// Report on the debug stream that the rule \a yyrule is going to be reduced.
+void
+yy::]b4_parser_class_name[::yyreduce_print_ (int yyrule)
+{
+ unsigned int yylno = yyrline_[yyrule];
+ /* Print the symbols being reduced, and their result. */
+ *yycdebug_ << "Reducing stack by rule " << 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;
+}
+#endif // YYDEBUG
/* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */
-yy::]b4_parser_class_name[::TokenNumberType
-yy::]b4_parser_class_name[::translate_ (int token)
+yy::]b4_parser_class_name[::token_number_type
+yy::]b4_parser_class_name[::yytranslate_ (int token)
{
static
- const TokenNumberType
- translate_[] =
+ const token_number_type
+ translate_table[] =
{
]b4_translate[
};
- if ((unsigned) token <= user_token_number_max_)
- return translate_[token];
+ if ((unsigned int) token <= yyuser_token_number_max_)
+ return translate_table[token];
else
- return undef_token_;
+ return yyundef_token_;
}
-const int yy::]b4_parser_class_name[::eof_ = 0;
-const int yy::]b4_parser_class_name[::last_ = ]b4_last[;
-const int yy::]b4_parser_class_name[::nnts_ = ]b4_nterms_number[;
-const int yy::]b4_parser_class_name[::empty_ = -2;
-const int yy::]b4_parser_class_name[::final_ = ]b4_final_state_number[;
-const int yy::]b4_parser_class_name[::terror_ = 1;
-const int yy::]b4_parser_class_name[::errcode_ = 256;
-const int yy::]b4_parser_class_name[::ntokens_ = ]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 yy::]b4_parser_class_name[::user_token_number_max_ = ]b4_user_token_number_max[;
-const yy::]b4_parser_class_name[::TokenNumberType yy::]b4_parser_class_name[::undef_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[;
]b4_epilogue
dnl
-@output stack.hh
-b4_copyright([Stack handling for Bison C++ parsers], [2002, 2003])[
+@output b4_dir_prefix[]stack.hh
+b4_copyright([stack handling for Bison C++ parsers], [2002, 2003, 2004, 2005])[
#ifndef BISON_STACK_HH
# define BISON_STACK_HH
namespace yy
{
- template < class T, class S = std::deque< T > >
- class Stack
+ template <class T, class S = std::deque<T> >
+ class stack
{
public:
- typedef typename S::iterator Iterator;
- typedef typename S::const_iterator ConstIterator;
+ // Hide our reversed order.
+ typedef typename S::reverse_iterator iterator;
+ typedef typename S::const_reverse_iterator const_iterator;
- Stack () : seq_ ()
+ stack () : seq_ ()
{
}
- Stack (unsigned n) : seq_ (n)
+ stack (unsigned int n) : seq_ (n)
{
}
inline
T&
- operator [] (unsigned index)
+ operator [] (unsigned int i)
{
- return seq_[index];
+ return seq_[i];
}
inline
const T&
- operator [] (unsigned index) const
+ operator [] (unsigned int i) const
{
- return seq_[index];
+ return seq_[i];
}
inline
inline
void
- pop (unsigned n = 1)
+ pop (unsigned int n = 1)
{
for (; n; --n)
seq_.pop_front ();
}
inline
- unsigned
+ unsigned int
height () const
{
return seq_.size ();
}
- inline ConstIterator begin () const { return seq_.begin (); }
- inline ConstIterator end () const { return seq_.end (); }
+ inline const_iterator begin () const { return seq_.rbegin (); }
+ inline const_iterator end () const { return seq_.rend (); }
private:
S seq_;
};
- template < class T, class S = Stack< T > >
- class Slice
+ /// Present a slice of the top of a stack.
+ template <class T, class S = stack<T> >
+ class slice
{
public:
- Slice (const S& stack,
- unsigned range) : stack_ (stack),
- range_ (range)
+ slice (const S& stack,
+ unsigned int range) : stack_ (stack),
+ range_ (range)
{
}
inline
const T&
- operator [] (unsigned index) const
+ operator [] (unsigned int i) const
{
- return stack_[range_ - index];
+ return stack_[range_ - i];
}
private:
const S& stack_;
- unsigned range_;
+ unsigned int range_;
};
}
#endif // not BISON_STACK_HH]
-dnl
-@output position.hh
-b4_copyright([Position class for Bison C++ parsers], [2002, 2003])[
-
-/**
- ** \file position.hh
- ** Define the Location class.
- */
-
-#ifndef BISON_POSITION_HH
-# define BISON_POSITION_HH
-
-# include <iostream>
-# include <string>
-
-namespace yy
-{
- /** \brief Abstract a Position. */
- class Position
- {
- public:
- /** \brief Initial column number. */
- static const unsigned int initial_column = 0;
- /** \brief Initial line number. */
- static const unsigned int initial_line = 1;
-
- /** \name Ctor & dtor.
- ** \{ */
- public:
- /** \brief Construct a Position. */
- Position () :
- filename (),
- line (initial_line),
- column (initial_column)
- {
- }
- /** \} */
-
-
- /** \name Line and Column related manipulators
- ** \{ */
- public:
- /** \brief (line related) Advance to the LINES next lines. */
- inline void lines (int lines = 1)
- {
- column = initial_column;
- line += lines;
- }
-
- /** \brief (column related) Advance to the COLUMNS next columns. */
- inline void columns (int columns = 1)
- {
- column += columns;
- }
- /** \} */
-
- public:
- /** \brief File name to which this position refers. */
- std::string filename;
- /** \brief Current line number. */
- unsigned int line;
- /** \brief Current column number. */
- unsigned int column;
- };
-
- /** \brief Add and assign a Position. */
- inline const Position&
- operator+= (Position& res, const int width)
- {
- res.columns (width);
- return res;
- }
-
- /** \brief Add two Position objects. */
- inline const Position
- operator+ (const Position& begin, const int width)
- {
- Position res = begin;
- return res += width;
- }
-
- /** \brief Add and assign a Position. */
- inline const Position&
- operator-= (Position& res, const int width)
- {
- return res += -width;
- }
-
- /** \brief 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])[
-
-/**
- ** \file location.hh
- ** Define the Location class.
- */
-
-#ifndef BISON_LOCATION_HH
-# define BISON_LOCATION_HH
-
-# include <iostream>
-# include <string>
-# include "position.hh"
-
-namespace yy
-{
-
- /** \brief Abstract a Location. */
- class Location
- {
- /** \name Ctor & dtor.
- ** \{ */
- public:
- /** \brief Construct a Location. */
- Location (void) :
- begin (),
- end ()
- {
- }
- /** \} */
-
-
- /** \name Line and Column related manipulators
- ** \{ */
- public:
- /** \brief Reset initial location to final location. */
- inline void step (void)
- {
- begin = end;
- }
-
- /** \brief Extend the current location to the COLUMNS next columns. */
- inline void columns (unsigned columns = 1)
- {
- end += columns;
- }
-
- /** \brief Extend the current location to the LINES next lines. */
- inline void lines (unsigned lines = 1)
- {
- end.lines (lines);
- }
- /** \} */
-
-
- public:
- /** \brief Beginning of the located region. */
- Position begin;
- /** \brief End of the located region. */
- Position end;
- };
-
- /** \brief 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;
- }
-
- /** \brief Add two Location objects */
- inline const Location operator+ (const Location& begin, unsigned width)
- {
- Location res = begin;
- res.columns (width);
- return res;
- }
-
- /** \brief Add and assign a Location */
- inline Location &operator+= (Location& res, unsigned width)
- {
- res.columns (width);
- return res;
- }
-
- /** \brief Intercept output stream redirection.
- ** \param ostr the destination output stream
- ** \param pos a reference to the Position to redirect
- **
- ** Don't issue twice the line number when the location is on a single line.
- */
- inline std::ostream& operator<< (std::ostream& ostr, const Location& pos)
- {
- ostr << pos.begin;
- if (pos.begin.filename != pos.end.filename)
- ostr << '-' << pos.end - 1;
- else if (pos.begin.line != pos.end.line)
- ostr << '-' << pos.end.line << '.' << pos.end.column - 1;
- else if (pos.begin.column != pos.end.column - 1)
- ostr << '-' << pos.end.column - 1;
- return ostr;
- }
-
-}
-
-#endif // not BISON_LOCATION_HH]
+m4_divert(-1)
projects / bison.git / blobdiff