# C++ skeleton for Bison
-# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-# 2010 Free Software Foundation, Inc.
+# Copyright (C) 2002-2012 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
m4_include(b4_pkgdatadir/[c++.m4])
-m4_define([b4_parser_class_name],
- [b4_percent_define_get([[parser_class_name]])])
-# The header is mandatory.
-b4_defines_if([],
- [b4_fatal([b4_skeleton[: using %%defines is mandatory]])])
+# b4_integral_parser_table_declare(TABLE-NAME, CONTENT, COMMENT)
+# --------------------------------------------------------------
+# Declare "parser::yy<TABLE-NAME>_" which contents is CONTENT.
+m4_define([b4_integral_parser_table_declare],
+[m4_ifval([$3], [b4_comment([$3], [ ])
+])dnl
+ static const b4_int_type_for([$2]) yy$1_[[]];dnl
+])
-b4_percent_define_ifdef([[location_type]], [],
- [# Backward compatibility.
- m4_define([b4_location_constructors])
- m4_include(b4_pkgdatadir/[location.cc])])
+# b4_integral_parser_table_define(TABLE-NAME, CONTENT, COMMENT)
+# -------------------------------------------------------------
+# Define "parser::yy<TABLE-NAME>_" which contents is CONTENT.
+m4_define([b4_integral_parser_table_define],
+[ const b4_int_type_for([$2])
+ b4_parser_class_name::yy$1_[[]] =
+ {
+ $2
+ };dnl
+])
-# We do want M4 expansion after # for CPP macros.
-m4_changecom()
-m4_divert_push(0)dnl
-b4_defines_if(
-[@output(b4_spec_defines_file@)@
-b4_copyright([Skeleton interface for Bison LALR(1) parsers in C++],
- [2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010])
-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
+# b4_symbol_value_template(VAL, [TYPE])
+# -------------------------------------
+# Same as b4_symbol_value, but used in a template method. It makes
+# a difference when using variants.
+m4_copy([b4_symbol_value], [b4_symbol_value_template])
-]b4_percent_code_get([[requires]])[
-#include <string>
-#include <iostream>
-#include "stack.hh"
-]b4_percent_define_ifdef([[location_type]], [],
- [[#include "location.hh"]])[
+# b4_lhs_value([TYPE])
+# --------------------
+# Expansion of $<TYPE>$.
+m4_define([b4_lhs_value],
+ [b4_symbol_value([yylhs.value], [$1])])
-/* Enabling traces. */
-#ifndef YYDEBUG
-# define YYDEBUG ]b4_debug_flag[
-#endif
-/* Enabling verbose error messages. */
-#ifdef YYERROR_VERBOSE
-# undef YYERROR_VERBOSE
-# define YYERROR_VERBOSE 1
-#else
-# define YYERROR_VERBOSE ]b4_error_verbose_flag[
-#endif
+# b4_lhs_location()
+# -----------------
+# Expansion of @$.
+m4_define([b4_lhs_location],
+ [yylhs.location])
-/* Enabling the token table. */
-#ifndef YYTOKEN_TABLE
-# define YYTOKEN_TABLE ]b4_token_table[
-#endif
+
+# b4_rhs_data(RULE-LENGTH, NUM)
+# -----------------------------
+# Return the data corresponding to the symbol #NUM, where the current
+# rule has RULE-LENGTH symbols on RHS.
+m4_define([b4_rhs_data],
+ [yystack_@{b4_subtract($@)@}])
+
+
+# b4_rhs_state(RULE-LENGTH, NUM)
+# ------------------------------
+# The state corresponding to the symbol #NUM, where the current
+# rule has RULE-LENGTH symbols on RHS.
+m4_define([b4_rhs_state],
+ [b4_rhs_data([$1], [$2]).state])
+
+
+# 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],
+ [b4_symbol_value([b4_rhs_data([$1], [$2]).value], [$3])])
+
+
+# b4_rhs_location(RULE-LENGTH, NUM)
+# ---------------------------------
+# Expansion of @NUM, where the current rule has RULE-LENGTH symbols
+# on RHS.
+m4_define([b4_rhs_location],
+ [b4_rhs_data([$1], [$2]).location])
+
+
+# b4_symbol_action(SYMBOL-NUM, KIND)
+# ----------------------------------
+# Run the action KIND (destructor or printer) for SYMBOL-NUM.
+# Same as in C, but using references instead of pointers.
+m4_define([b4_symbol_action],
+[b4_symbol_if([$1], [has_$2],
+[m4_pushdef([b4_symbol_value], m4_defn([b4_symbol_value_template]))[]dnl
+b4_dollar_pushdef([yysym.value],
+ b4_symbol_if([$1], [has_type],
+ [m4_dquote(b4_symbol([$1], [type]))]),
+ [yysym.location])dnl
+ b4_symbol_case_([$1])
+b4_syncline([b4_symbol([$1], [$2_line])], ["b4_symbol([$1], [$2_file])"])
+ b4_symbol([$1], [$2])
+b4_syncline([@oline@], [@ofile@])
+ break;
+
+m4_popdef([b4_symbol_value])[]dnl
+b4_dollar_popdef[]dnl
+])])
+
+
+m4_pushdef([b4_copyright_years],
+ [2002-2012])
+
+m4_define([b4_parser_class_name],
+ [b4_percent_define_get([[parser_class_name]])])
+
+b4_bison_locations_if([# Backward compatibility.
+ m4_define([b4_location_constructors])
+ m4_include(b4_pkgdatadir/[location.cc])])
+m4_include(b4_pkgdatadir/[stack.hh])
+b4_variant_if([m4_include(b4_pkgdatadir/[variant.hh])])
+
+# b4_shared_declarations
+# ----------------------
+# Declaration that might either go into the header (if --defines)
+# or open coded in the parser body.
+m4_define([b4_shared_declarations],
+[b4_percent_code_get([[requires]])[
+]b4_parse_assert_if([# include <cassert>])[
+# include <deque>
+# include <iostream>
+# include <stdexcept>
+# include <string>]b4_defines_if([[
+# include "stack.hh"
+]b4_bison_locations_if([[# include "location.hh"]])])[
+
+]b4_YYDEBUG_define[
]b4_namespace_open[
+]b4_defines_if([],
+[b4_stack_define
+b4_bison_locations_if([b4_position_define
+b4_location_define])])[
+
+]b4_variant_if([b4_variant_define])[
+
/// A Bison parser.
class ]b4_parser_class_name[
{
public:
- /// Symbol semantic values.
-#ifndef YYSTYPE
-]m4_ifdef([b4_stype],
-[ union semantic_type
- {
-b4_user_stype
- };],
-[m4_if(b4_tag_seen_flag, 0,
-[[ typedef int semantic_type;]],
-[[ typedef YYSTYPE semantic_type;]])])[
-#else
- typedef YYSTYPE semantic_type;
-#endif
- /// Symbol locations.
- typedef ]b4_percent_define_get([[location_type]],
- [[location]])[ location_type;
- /// Tokens.
- struct token
- {
- ]b4_token_enums(b4_tokens)[
- };
- /// Token type.
- typedef token::yytokentype token_type;
-
+]b4_public_types_declare[
/// Build a parser object.
]b4_parser_class_name[ (]b4_parse_param_decl[);
virtual ~]b4_parser_class_name[ ();
/// \returns 0 iff parsing succeeded.
virtual int parse ();
-#if YYDEBUG
+#if ]b4_api_PREFIX[DEBUG
/// The current debugging stream.
std::ostream& debug_stream () const;
/// Set the current debugging stream.
void set_debug_level (debug_level_type l);
#endif
- private:
- /// Report a syntax error.
- /// \param loc where the syntax error is found.
+ /// Report a syntax error.]b4_locations_if([[
+ /// \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 lookahead token.
- virtual std::string yysyntax_error_ (int yystate, 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 yy_symbol_print_ (int yytype,
- const semantic_type* yyvaluep,
- const location_type* yylocationp);
-#endif
+ virtual void error (]b4_locations_if([[const location_type& loc, ]])[const std::string& msg);
+ /// Report a syntax error.
+ void error (const syntax_error& err);
+ private:
/// 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_;
+
+ /// Generate an error message.
+ /// \param yystate the state where the error occurred.
+ /// \param yytoken the lookahead token.
+ virtual std::string yysyntax_error_ (state_type yystate, int yytoken);
+
+ /// Compute post-reduction state.
+ /// \param yystate the current state
+ /// \param yylhs the nonterminal to push on the stack
+ state_type yy_lr_goto_state_ (state_type yystate, int yylhs);
/// Whether the given \c yypact_ value indicates a defaulted state.
/// \param yyvalue the value to check
/// Internal symbol numbers.
typedef ]b4_int_type_for([b4_translate])[ token_number_type;
- /* Tables. */
- /// For a state, the index in \a yytable_ of its portion.
- static const ]b4_int_type_for([b4_pact])[ yypact_[];
static const ]b4_int_type(b4_pact_ninf, b4_pact_ninf)[ yypact_ninf_;
-
- /// For a state, default reduction number.
- /// 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]b4_error_verbose_if([
+ // Tables.
+]b4_parser_tables_declare[]b4_error_verbose_if([
/// Convert the symbol name \a n to a form suitable for a diagnostic.
static std::string yytnamerr_ (const char *n);])[
-#if YYDEBUG
- /// 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_[];
+]b4_token_table_if([], [[#if ]b4_api_PREFIX[DEBUG]])[
+ /// For a symbol, its name in clear.
+ static const char* const yytname_[];
+]b4_token_table_if([[#if ]b4_api_PREFIX[DEBUG]])[
+]b4_integral_parser_table_declare([rline], [b4_rline],
+ [YYRLINE[YYN] -- Source line where rule number YYN was defined.])[
/// Report on the debug stream that the rule \a r is going to be reduced.
virtual void yy_reduce_print_ (int r);
/// Print the state stack on the debug stream.
virtual void yystack_print_ ();
- /* Debugging. */
+ // Debugging.
int yydebug_;
std::ostream* yycdebug_;
-#endif
+#endif // ]b4_api_PREFIX[DEBUG
/// Convert a scanner token number \a t to a symbol number.
- token_number_type yytranslate_ (int t);
+ static inline token_number_type yytranslate_ (]b4_token_ctor_if([token_type], [int])[ t);
+
+#if ]b4_api_PREFIX[DEBUG
+ /// \brief Display a symbol type, value and location.
+ /// \param yyo The output stream.
+ /// \param yysym The symbol.
+ template <typename Exact>
+ void yy_print_ (std::ostream& yyo,
+ const symbol_base_type<Exact>& yysym) const;
+#endif
/// \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);
+ /// \param yymsg Why this token is reclaimed.
+ /// If null, print nothing.
+ /// \param s The symbol.
+ template <typename Exact>
+ inline void yy_destroy_ (const char* yymsg,
+ symbol_base_type<Exact>& yysym) const;
+
+ private:
+ /// Element of the stack: a state and its attributes.
+ struct stack_symbol_type : symbol_base_type<stack_symbol_type>
+ {
+ /// The parent class.
+ typedef symbol_base_type<stack_symbol_type> super_type;
+
+ /// Default constructor.
+ inline stack_symbol_type ();
+
+ /// Constructor.
+ inline stack_symbol_type (]b4_join([state_type s],
+ [const semantic_type& v],
+ b4_locations_if([const location_type& l]))[);
+
+ /// The state.
+ state_type state;
+
+ /// The type (corresponding to \a state).
+ inline int type_get_ () const;
+ };
+
+ /// Stack type.
+ typedef stack<stack_symbol_type> stack_type;
+
+ /// The stack.
+ stack_type yystack_;
+
+ /// Push a new state on the stack.
+ /// \param m a debug message to display
+ /// if null, no trace is output.
+ /// \param s the symbol
+ /// \warning the contents of \a s.value is stolen.
+ inline void yypush_ (const char* m, stack_symbol_type& s);
+
+ /// Push a new look ahead token on the state on the stack.
+ /// \param m a debug message to display
+ /// if null, no trace is output.
+ /// \param s the state
+ /// \param sym the symbol (for its value and location).
+ /// \warning the contents of \a s.value is stolen.
+ inline void yypush_ (const char* m, state_type s, symbol_type& sym);
/// Pop \a n symbols the three stacks.
inline void yypop_ (unsigned int n = 1);
/* Constants. */
- static const int yyeof_;
- /* LAST_ -- Last index in TABLE_. */
- static const int yylast_;
- static const int yynnts_;
- static const int yyempty_;
- static const int yyfinal_;
- static const int yyterror_;
- static const int yyerrcode_;
- static const int yyntokens_;
- static const unsigned int yyuser_token_number_max_;
- static const token_number_type yyundef_token_;
+ enum
+ {
+ yyeof_ = 0,
+ yylast_ = ]b4_last[, //< Last index in yytable_.
+ yynnts_ = ]b4_nterms_number[, //< Number of nonterminal symbols.
+ yyempty_ = -2,
+ yyfinal_ = ]b4_final_state_number[, //< Termination state number.
+ yyterror_ = 1,
+ yyerrcode_ = 256,
+ yyntokens_ = ]b4_tokens_number[ //< Number of tokens.
+ };
+
]b4_parse_param_vars[
};
+
+]b4_token_ctor_if([b4_yytranslate_define
+b4_public_types_define])[
]b4_namespace_close[
]b4_percent_define_flag_if([[global_tokens_and_yystype]],
-[b4_token_defines(b4_tokens)
+[b4_token_defines
-#ifndef YYSTYPE
+#ifndef ]b4_api_PREFIX[STYPE
/* Redirection for backward compatibility. */
-# define YYSTYPE b4_namespace_ref::b4_parser_class_name::semantic_type
+# define ]b4_api_PREFIX[STYPE b4_namespace_ref::b4_parser_class_name::semantic_type
#endif
+])[
+]b4_percent_code_get([[provides]])[
+]])
+
+b4_defines_if(
+[b4_output_begin([b4_spec_defines_file])
+b4_copyright([Skeleton interface for Bison LALR(1) parsers in C++])
+[
+/**
+ ** \file ]b4_spec_defines_file[
+ ** Define the ]b4_namespace_ref[::parser class.
+ */
+
+/* C++ LALR(1) parser skeleton written by Akim Demaille. */
+
+]b4_cpp_guard_open([b4_spec_defines_file])[
+]b4_shared_declarations[
+]b4_cpp_guard_close([b4_spec_defines_file])
+b4_output_end()
])
-b4_percent_code_get([[provides]])[]dnl
-[#endif /* ! defined PARSER_HEADER_H */]
-])dnl
-@output(b4_parser_file_name@)@
-b4_copyright([Skeleton implementation for Bison LALR(1) parsers in C++],
- [2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010])
+
+b4_output_begin([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_user_pre_prologue
+// First part of user declarations.
+]b4_user_pre_prologue[
+
+]b4_null_define[
-b4_defines_if([[
-#include "@basename(]b4_spec_defines_file[@)"]])[
+]b4_defines_if([[#include "@basename(]b4_spec_defines_file[@)"]],
+ [b4_shared_declarations])[
/* User implementation prologue. */
-]b4_user_post_prologue
-b4_percent_code_get[]dnl
+]b4_user_post_prologue[
+]b4_percent_code_get[
-[#ifndef YY_
+#ifndef YY_
# if defined YYENABLE_NLS && YYENABLE_NLS
# if ENABLE_NLS
# include <libintl.h> /* FIXME: INFRINGES ON USER NAME SPACE */
# endif
#endif
-/* 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). */
-
-#define YYRHSLOC(Rhs, K) ((Rhs)[K])
-#ifndef YYLLOC_DEFAULT
-# define YYLLOC_DEFAULT(Current, Rhs, N) \
- do \
- if (N) \
- { \
- (Current).begin = YYRHSLOC (Rhs, 1).begin; \
- (Current).end = YYRHSLOC (Rhs, N).end; \
- } \
- else \
- { \
- (Current).begin = (Current).end = YYRHSLOC (Rhs, 0).end; \
- } \
- while (false)
-#endif
+]b4_locations_if([dnl
+[#define YYRHSLOC(Rhs, K) ((Rhs)[K].location)
+]b4_yylloc_default_define])[
/* Suppress unused-variable warnings by "using" E. */
#define YYUSE(e) ((void) (e))
/* Enable debugging if requested. */
-#if YYDEBUG
+#if ]b4_api_PREFIX[DEBUG
/* A pseudo ostream that takes yydebug_ into account. */
# define YYCDEBUG if (yydebug_) (*yycdebug_)
-# define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
-do { \
- if (yydebug_) \
- { \
- *yycdebug_ << Title << ' '; \
- yy_symbol_print_ ((Type), (Value), (Location)); \
- *yycdebug_ << std::endl; \
- } \
-} while (false)
-
-# define YY_REDUCE_PRINT(Rule) \
-do { \
- if (yydebug_) \
- yy_reduce_print_ (Rule); \
-} while (false)
-
-# define YY_STACK_PRINT() \
-do { \
- if (yydebug_) \
- yystack_print_ (); \
-} while (false)
-
-#else /* !YYDEBUG */
+# define YY_SYMBOL_PRINT(Title, Symbol) \
+ do { \
+ if (yydebug_) \
+ { \
+ *yycdebug_ << Title << ' '; \
+ yy_print_ (*yycdebug_, Symbol); \
+ *yycdebug_ << std::endl; \
+ } \
+ } while (false)
+
+# define YY_REDUCE_PRINT(Rule) \
+ do { \
+ if (yydebug_) \
+ yy_reduce_print_ (Rule); \
+ } while (false)
+
+# define YY_STACK_PRINT() \
+ do { \
+ if (yydebug_) \
+ yystack_print_ (); \
+ } while (false)
+
+#else /* !]b4_api_PREFIX[DEBUG */
# define YYCDEBUG if (false) std::cerr
-# define YY_SYMBOL_PRINT(Title, Type, Value, Location)
-# define YY_REDUCE_PRINT(Rule)
-# define YY_STACK_PRINT()
+# define YY_SYMBOL_PRINT(Title, Symbol) YYUSE(Symbol)
+# define YY_REDUCE_PRINT(Rule) static_cast<void>(0)
+# define YY_STACK_PRINT() static_cast<void>(0)
-#endif /* !YYDEBUG */
+#endif /* !]b4_api_PREFIX[DEBUG */
-#define yyerrok (yyerrstatus_ = 0)
-#define yyclearin (yychar = yyempty_)
+#define yyerrok (yyerrstatus_ = 0)
+#define yyclearin (yyempty = true)
-#define YYACCEPT goto yyacceptlab
-#define YYABORT goto yyabortlab
-#define YYERROR goto yyerrorlab
+#define YYACCEPT goto yyacceptlab
+#define YYABORT goto yyabortlab
+#define YYERROR goto yyerrorlab
#define YYRECOVERING() (!!yyerrstatus_)
]b4_namespace_open[]b4_error_verbose_if([[
/// Build a parser object.
]b4_parser_class_name::b4_parser_class_name[ (]b4_parse_param_decl[)]m4_ifset([b4_parse_param], [
:])[
-#if YYDEBUG
+#if ]b4_api_PREFIX[DEBUG
]m4_ifset([b4_parse_param], [ ], [ :])[yydebug_ (false),
yycdebug_ (&std::cerr)]m4_ifset([b4_parse_param], [,])[
#endif]b4_parse_param_cons[
{
}
-#if YYDEBUG
- /*--------------------------------.
- | Print this symbol on YYOUTPUT. |
- `--------------------------------*/
- inline void
- ]b4_parser_class_name[::yy_symbol_value_print_ (int yytype,
- const semantic_type* yyvaluep, const location_type* yylocationp)
+ /*---------------.
+ | Symbol types. |
+ `---------------*/
+
+]b4_token_ctor_if([], [b4_public_types_define])[
+
+ // stack_symbol_type.
+ ]b4_parser_class_name[::stack_symbol_type::stack_symbol_type ()
+ : super_type ()
+ , state ()
{
- YYUSE (yylocationp);
- YYUSE (yyvaluep);
- switch (yytype)
- {
- ]m4_map([b4_symbol_actions], m4_defn([b4_symbol_printers]))dnl
-[ default:
- break;
- }
}
+ ]b4_parser_class_name[::stack_symbol_type::stack_symbol_type (]b4_join(
+ [state_type s],
+ [const semantic_type& v],
+ b4_locations_if([const location_type& l]))[)
+ : super_type (v]b4_locations_if([, l])[)
+ , state (s)
+ {
+ }
- void
- ]b4_parser_class_name[::yy_symbol_print_ (int yytype,
- const semantic_type* yyvaluep, const location_type* yylocationp)
+ int
+ ]b4_parser_class_name[::stack_symbol_type::type_get_ () const
{
- *yycdebug_ << (yytype < yyntokens_ ? "token" : "nterm")
- << ' ' << yytname_[yytype] << " ("
- << *yylocationp << ": ";
- yy_symbol_value_print_ (yytype, yyvaluep, yylocationp);
- *yycdebug_ << ')';
+ return yystos_[state];
}
-#endif
+
+ template <typename Exact>
void
- ]b4_parser_class_name[::yydestruct_ (const char* yymsg,
- int yytype, semantic_type* yyvaluep, location_type* yylocationp)
+ ]b4_parser_class_name[::yy_destroy_ (const char* yymsg,
+ symbol_base_type<Exact>& yysym) const
{
- YYUSE (yylocationp);
- YYUSE (yymsg);
- YYUSE (yyvaluep);
+ if (yymsg)
+ YY_SYMBOL_PRINT (yymsg, yysym);
+
+ // User destructor.
+ int yytype = yysym.type_get ();
+ switch (yytype)
+ {
+]b4_symbol_foreach([b4_symbol_destructor])dnl
+[ default:
+ break;
+ }]b4_variant_if([
- YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
+ // Type destructor.
+ b4_symbol_variant([[yytype]], [[yysym.value]], [[template destroy]])])[
+ }
+#if ]b4_api_PREFIX[DEBUG
+ template <typename Exact>
+ void
+ ]b4_parser_class_name[::yy_print_ (std::ostream& yyo,
+ const symbol_base_type<Exact>& yysym) const
+ {
+ std::ostream& yyoutput = yyo;
+ YYUSE (yyoutput);
+ int yytype = yysym.type_get ();
+ yyo << (yytype < yyntokens_ ? "token" : "nterm")
+ << ' ' << yytname_[yytype] << " ("]b4_locations_if([
+ << yysym.location << ": "])[;
switch (yytype)
{
- ]m4_map([b4_symbol_actions], m4_defn([b4_symbol_destructors]))[
- default:
- break;
+]b4_symbol_foreach([b4_symbol_printer])dnl
+[ default:
+ break;
}
+ yyo << ')';
+ }
+#endif
+
+ void
+ ]b4_parser_class_name[::yypush_ (const char* m, state_type s,
+ symbol_type& sym)
+ {
+ if (m)
+ YY_SYMBOL_PRINT (m, sym);
+]b4_variant_if(
+[[ yystack_.push (stack_symbol_type (]b4_join(
+ [s],
+ [semantic_type()],
+ b4_locations_if([sym.location]))[));
+ ]b4_symbol_variant([[yystos_[s]]], [[yystack_[0].value]],
+ [build], [sym.value])],
+[[ yystack_.push (stack_symbol_type (]b4_join(
+ [s],
+ [sym.value],
+ b4_locations_if([sym.location]))[));]])[
+ }
+
+ void
+ ]b4_parser_class_name[::yypush_ (const char* m, stack_symbol_type& s)
+ {
+ if (m)
+ YY_SYMBOL_PRINT (m, s);
+]b4_variant_if(
+[[ yystack_.push (stack_symbol_type (]b4_join(
+ [s.state],
+ [semantic_type()],
+ b4_locations_if([s.location]))[));
+ ]b4_symbol_variant([[yystos_[s.state]]], [[yystack_[0].value]],
+ [build], [s.value])],
+[ yystack_.push (s);])[
}
void
]b4_parser_class_name[::yypop_ (unsigned int n)
{
- yystate_stack_.pop (n);
- yysemantic_stack_.pop (n);
- yylocation_stack_.pop (n);
+ yystack_.pop (n);
}
-#if YYDEBUG
+#if ]b4_api_PREFIX[DEBUG
std::ostream&
]b4_parser_class_name[::debug_stream () const
{
{
yydebug_ = l;
}
-#endif
+#endif // ]b4_api_PREFIX[DEBUG
+
+ inline ]b4_parser_class_name[::state_type
+ ]b4_parser_class_name[::yy_lr_goto_state_ (state_type yystate, int yylhs)
+ {
+ int yyr = yypgoto_[yylhs - yyntokens_] + yystate;
+ if (0 <= yyr && yyr <= yylast_ && yycheck_[yyr] == yystate)
+ return yytable_[yyr];
+ else
+ return yydefgoto_[yylhs - yyntokens_];
+ }
inline bool
]b4_parser_class_name[::yy_pact_value_is_default_ (int yyvalue)
int
]b4_parser_class_name[::parse ()
{
- /// Lookahead and lookahead in internal form.
- int yychar = yyempty_;
- int yytoken = 0;
+ /// Whether yyla contains a lookahead.
+ bool yyempty = true;
- /* State. */
+ // State.
int yyn;
int yylen = 0;
- int yystate = 0;
- /* Error handling. */
+ // Error handling.
int yynerrs_ = 0;
int yyerrstatus_ = 0;
- /// Semantic value of the lookahead.
- semantic_type yylval;
- /// Location of the lookahead.
- location_type yylloc;
+ /// The lookahead symbol.
+ symbol_type yyla;]b4_locations_if([[
+
/// The locations where the error started and ended.
- location_type yyerror_range[3];
+ stack_symbol_type yyerror_range[3];]])[
- /// $$.
- semantic_type yyval;
- /// @@$.
- location_type yyloc;
+ /// $$ and @@$.
+ stack_symbol_type yylhs;
+ /// The return value of parse ().
int yyresult;
+ // FIXME: This shoud be completely indented. It is not yet to
+ // avoid gratuitous conflicts when merging into the master branch.
+ try
+ {
YYCDEBUG << "Starting parse" << std::endl;
]m4_ifdef([b4_initial_action], [
-m4_pushdef([b4_at_dollar], [yylloc])dnl
-m4_pushdef([b4_dollar_dollar], [yylval])dnl
+b4_dollar_pushdef([yyla.value], [], [yyla.location])dnl
/* User initialization code. */
b4_user_initial_action
-m4_popdef([b4_dollar_dollar])dnl
-m4_popdef([b4_at_dollar])])dnl
+b4_dollar_popdef])[]dnl
- [ /* Initialize the stacks. The initial state will be pushed in
+ [ /* Initialize the stack. The initial state will be set 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);
+ yystack_ = stack_type (0);
+ yypush_ (YY_NULL, 0, yyla);
- /* New state. */
+ // A new symbol was pushed on the stack.
yynewstate:
- yystate_stack_.push (yystate);
- YYCDEBUG << "Entering state " << yystate << std::endl;
+ YYCDEBUG << "Entering state " << yystack_[0].state << std::endl;
/* Accept? */
- if (yystate == yyfinal_)
+ if (yystack_[0].state == yyfinal_)
goto yyacceptlab;
goto yybackup;
yybackup:
/* Try to take a decision without lookahead. */
- yyn = yypact_[yystate];
+ yyn = yypact_[yystack_[0].state];
if (yy_pact_value_is_default_ (yyn))
goto yydefault;
/* Read a lookahead token. */
- if (yychar == yyempty_)
- {
- YYCDEBUG << "Reading a token: ";
- yychar = ]b4_c_function_call([yylex], [int],
- [[YYSTYPE*], [&yylval]][]dnl
-b4_locations_if([, [[location*], [&yylloc]]])dnl
-m4_ifdef([b4_lex_param], [, ]b4_lex_param))[;
- }
-
-
- /* Convert token to internal form. */
- if (yychar <= yyeof_)
- {
- yychar = yytoken = yyeof_;
- YYCDEBUG << "Now at end of input." << std::endl;
- }
- else
+ if (yyempty)
{
- yytoken = yytranslate_ (yychar);
- YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
+ YYCDEBUG << "Reading a token: ";
+ try
+ {
+]b4_token_ctor_if(
+[ yyla = b4_function_call([yylex], [symbol_type],
+ m4_ifdef([b4_lex_param], b4_lex_param));],
+[ yyla.type = yytranslate_ (b4_function_call([yylex], [int],
+ [b4_api_PREFIX[STYPE*], [&yyla.value]][]dnl
+b4_locations_if([, [[location*], [&yyla.location]]])dnl
+m4_ifdef([b4_lex_param], [, ]b4_lex_param)));])[
+ }
+ catch (const syntax_error& yyexc)
+ {
+ error (yyexc);
+ goto yyerrlab1;
+ }
+ yyempty = false;
}
+ YY_SYMBOL_PRINT ("Next token is", yyla);
- /* 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)
+ /* If the proper action on seeing token YYLA.TYPE is to reduce or
+ to detect an error, take that action. */
+ yyn += yyla.type;
+ if (yyn < 0 || yylast_ < yyn || yycheck_[yyn] != yyla.type)
goto yydefault;
/* Reduce or error. */
yyn = yytable_[yyn];
if (yyn <= 0)
{
- if (yy_table_value_is_error_ (yyn))
- goto yyerrlab;
- yyn = -yyn;
- goto yyreduce;
+ if (yy_table_value_is_error_ (yyn))
+ goto yyerrlab;
+ yyn = -yyn;
+ goto yyreduce;
}
- /* Shift the lookahead token. */
- YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
-
/* Discard the token being shifted. */
- yychar = yyempty_;
-
- yysemantic_stack_.push (yylval);
- yylocation_stack_.push (yylloc);
+ yyempty = true;
/* Count tokens shifted since error; after three, turn off error
status. */
if (yyerrstatus_)
--yyerrstatus_;
- yystate = yyn;
+ /* Shift the lookahead token. */
+ yypush_ ("Shifting", yyn, yyla);
goto yynewstate;
/*-----------------------------------------------------------.
| yydefault -- do the default action for the current state. |
`-----------------------------------------------------------*/
yydefault:
- yyn = yydefact_[yystate];
+ yyn = yydefact_[yystack_[0].state];
if (yyn == 0)
goto yyerrlab;
goto yyreduce;
`-----------------------------*/
yyreduce:
yylen = yyr2_[yyn];
+ yylhs.state = yy_lr_goto_state_(yystack_[yylen].state, yyr1_[yyn]);]b4_variant_if([
+ /* Variants are always initialized to an empty instance of the
+ correct type. The default $$=$1 action is NOT applied when using
+ variants. */
+ b4_symbol_variant([[yyr1_@{yyn@}]], [yylhs.value], [build])],[
/* If YYLEN is nonzero, implement the default value of the action:
`$$ = $1'. Otherwise, use the top of the stack.
- Otherwise, the following line sets YYVAL to garbage.
+ Otherwise, the following line sets YYLHS.VALUE to garbage.
This behavior is undocumented and Bison
users should not rely upon it. */
if (yylen)
- yyval = yysemantic_stack_[yylen - 1];
+ yylhs.value = yystack_@{yylen - 1@}.value;
else
- yyval = yysemantic_stack_[0];
-
+ yylhs.value = yystack_@{0@}.value;])[
+]b4_locations_if([dnl
+[
+ // Compute the default @@$.
{
- slice<location_type, location_stack_type> slice (yylocation_stack_, yylen);
- YYLLOC_DEFAULT (yyloc, slice, yylen);
- }
+ slice<stack_symbol_type, stack_type> slice (yystack_, yylen);
+ YYLLOC_DEFAULT (yylhs.location, slice, yylen);
+ }]])[
+
+ // Perform the reduction.
YY_REDUCE_PRINT (yyn);
- switch (yyn)
+ try
{
- ]b4_user_actions[
- default:
- break;
+ switch (yyn)
+ {
+]b4_user_actions[
+ default:
+ break;
+ }
}
- /* User semantic actions sometimes alter yychar, and that requires
- that yytoken be updated with the new translation. We take the
- approach of translating immediately before every use of yytoken.
- One alternative is translating here after every semantic action,
- but that translation would be missed if the semantic action
- invokes YYABORT, YYACCEPT, or YYERROR immediately after altering
- yychar. In the case of YYABORT or YYACCEPT, an incorrect
- destructor might then be invoked immediately. In the case of
- YYERROR, subsequent parser actions might lead to an incorrect
- destructor call or verbose syntax error message before the
- lookahead is translated. */
- YY_SYMBOL_PRINT ("-> $$ =", yyr1_[yyn], &yyval, &yyloc);
+ catch (const syntax_error& yyexc)
+ {
+ error (yyexc);
+ YYERROR;
+ }
+ YY_SYMBOL_PRINT ("-> $$ =", yylhs);
+]b4_variant_if([[
+ // Destroy the rhs symbols.
+ for (int i = 0; i < yylen; ++i)
+ // Destroy a variant which value may have been swapped with
+ // yylhs.value (for instance if the action was "std::swap($$,
+ // $1)"). The value of yylhs.value (hence possibly one of these
+ // rhs symbols) depends on the default construction for this
+ // type. In the case of pointers for instance, no
+ // initialization is done, so the value is junk. Therefore do
+ // not try to report the value of symbols about to be destroyed
+ // in the debug trace, it's possibly junk. Hence yymsg = 0.
+ // Besides, that keeps exactly the same traces as with the other
+ // Bison skeletons.
+ yy_destroy_ (YY_NULL, yystack_[i]);]])[
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_];
+ yypush_ (YY_NULL, yylhs);
goto yynewstate;
- /*------------------------------------.
- | yyerrlab -- here on detecting error |
- `------------------------------------*/
+ /*--------------------------------------.
+ | yyerrlab -- here on detecting error. |
+ `--------------------------------------*/
yyerrlab:
- /* Make sure we have latest lookahead translation. See comments at
- user semantic actions for why this is necessary. */
- yytoken = yytranslate_ (yychar);
-
/* If not already recovering from an error, report this error. */
if (!yyerrstatus_)
{
- ++yynerrs_;
- if (yychar == yyempty_)
- yytoken = yyempty_;
- error (yylloc, yysyntax_error_ (yystate, yytoken));
+ ++yynerrs_;
+ error (]b4_join(b4_locations_if([yyla.location]),
+ [[yysyntax_error_ (yystack_[0].state,
+ yyempty ? yyempty_ : yyla.type)]])[);
}
- yyerror_range[1] = yylloc;
+]b4_locations_if([[
+ yyerror_range[1].location = yyla.location;]])[
if (yyerrstatus_ == 3)
{
- /* If just tried and failed to reuse lookahead 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_;
- }
+ /* If just tried and failed to reuse lookahead token after an
+ error, discard it. */
+
+ /* Return failure if at end of input. */
+ if (yyla.type == yyeof_)
+ YYABORT;
+ else if (!yyempty)
+ {
+ yy_destroy_ ("Error: discarding", yyla);
+ yyempty = true;
+ }
}
/* Else will try to reuse lookahead token after shifting the error
YYERROR and the label yyerrorlab therefore never appears in user
code. */
if (false)
- goto yyerrorlab;
-
- yyerror_range[1] = yylocation_stack_[yylen - 1];
+ goto yyerrorlab;]b4_locations_if([[
+ yyerror_range[1].location = yystack_[yylen - 1].location;]])b4_variant_if([[
+ /* $$ was initialized before running the user action. */
+ yy_destroy_ ("Error: discarding", yylhs);]])[
/* 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 (!yy_pact_value_is_default_ (yyn))
- {
- 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[1] = yylocation_stack_[0];
- yydestruct_ ("Error: popping",
- yystos_[yystate],
- &yysemantic_stack_[0], &yylocation_stack_[0]);
- yypop_ ();
- yystate = yystate_stack_[0];
- YY_STACK_PRINT ();
- }
-
- yyerror_range[2] = yylloc;
- // Using YYLLOC is tempting, but would change the location of
- // the lookahead. YYLOC is available though.
- YYLLOC_DEFAULT (yyloc, yyerror_range, 2);
- yysemantic_stack_.push (yylval);
- yylocation_stack_.push (yyloc);
+ yyerrstatus_ = 3; /* Each real token shifted decrements this. */
+ {
+ stack_symbol_type error_token;
+ for (;;)
+ {
+ yyn = yypact_[yystack_[0].state];
+ if (!yy_pact_value_is_default_ (yyn))
+ {
+ yyn += yyterror_;
+ if (0 <= yyn && yyn <= yylast_ && yycheck_[yyn] == yyterror_)
+ {
+ yyn = yytable_[yyn];
+ if (0 < yyn)
+ break;
+ }
+ }
- /* Shift the error token. */
- YY_SYMBOL_PRINT ("Shifting", yystos_[yyn],
- &yysemantic_stack_[0], &yylocation_stack_[0]);
+ // Pop the current state because it cannot handle the error token.
+ if (yystack_.size () == 1)
+ YYABORT;
+]b4_locations_if([[
+ yyerror_range[1].location = yystack_[0].location;]])[
+ yy_destroy_ ("Error: popping", yystack_[0]);
+ yypop_ ();
+ YY_STACK_PRINT ();
+ }
+]b4_locations_if([[
+ yyerror_range[2].location = yyla.location;
+ YYLLOC_DEFAULT (error_token.location, yyerror_range, 2);]])[
- yystate = yyn;
+ /* Shift the error token. */
+ error_token.state = yyn;
+ yypush_ ("Shifting", error_token);
+ }
goto yynewstate;
/* Accept. */
goto yyreturn;
yyreturn:
- if (yychar != yyempty_)
- {
- /* Make sure we have latest lookahead translation. See comments
- at user semantic actions for why this is necessary. */
- yytoken = yytranslate_ (yychar);
- yydestruct_ ("Cleanup: discarding lookahead", yytoken, &yylval,
- &yylloc);
- }
+ if (!yyempty)
+ yy_destroy_ ("Cleanup: discarding lookahead", yyla);
/* Do not reclaim the symbols of the rule which action triggered
this YYABORT or YYACCEPT. */
yypop_ (yylen);
- while (yystate_stack_.height () != 1)
+ while (1 < yystack_.size ())
{
- yydestruct_ ("Cleanup: popping",
- yystos_[yystate_stack_[0]],
- &yysemantic_stack_[0],
- &yylocation_stack_[0]);
- yypop_ ();
+ yy_destroy_ ("Cleanup: popping", yystack_[0]);
+ yypop_ ();
}
return yyresult;
}
+ catch (...)
+ {
+ YYCDEBUG << "Exception caught: cleaning lookahead and stack"
+ << std::endl;
+ // Do not try to display the values of the reclaimed symbols,
+ // as their printer might throw an exception.
+ if (!yyempty)
+ yy_destroy_ (YY_NULL, yyla);
+
+ while (1 < yystack_.size ())
+ {
+ yy_destroy_ (YY_NULL, yystack_[0]);
+ yypop_ ();
+ }
+ throw;
+ }
+ }
+
+ void
+ ]b4_parser_class_name[::error (const syntax_error& yyexc)
+ {
+ error (]b4_join(b4_locations_if([yyexc.location]),
+ [[yyexc.what()]])[);
+ }
// Generate an error message.
std::string
]b4_parser_class_name[::yysyntax_error_ (]dnl
-b4_error_verbose_if([int yystate, int yytoken],
+b4_error_verbose_if([state_type yystate, int yytoken],
[int, int])[)
{]b4_error_verbose_if([[
std::string yyres;
a consistent state with a default action. There might have
been a previous inconsistent state, consistent state with a
non-default action, or user semantic action that manipulated
- yychar.
+ yyla. (However, yyla is currently not documented for users.)
- Of course, the expected token list depends on states to have
correct lookahead information, and it depends on the parser not
to perform extra reductions after fetching a lookahead from the
}
}
- char const* yyformat = 0;
+ char const* yyformat = YY_NULL;
switch (yycount)
{
#define YYCASE_(N, S) \
}
- /* 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 reduction number in state S. Performed 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[
- };
-
- /* YYPGOTO[NTERM-NUM]. */
- const ]b4_int_type_for([b4_pgoto])[
- ]b4_parser_class_name[::yypgoto_[] =
- {
- ]b4_pgoto[
- };
-
- /* YYDEFGOTO[NTERM-NUM]. */
- const ]b4_int_type_for([b4_defgoto])[
- ]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 YYTABLE_NINF_, syntax error. */
const ]b4_int_type(b4_table_ninf, b4_table_ninf) b4_parser_class_name::yytable_ninf_ = b4_table_ninf[;
- const ]b4_int_type_for([b4_table])[
- ]b4_parser_class_name[::yytable_[] =
- {
- ]b4_table[
- };
-
- /* YYCHECK. */
- const ]b4_int_type_for([b4_check])[
- ]b4_parser_class_name[::yycheck_[] =
- {
- ]b4_check[
- };
-
- /* STOS_[STATE-NUM] -- The (internal number of the) accessing
- symbol of state STATE-NUM. */
- const ]b4_int_type_for([b4_stos])[
- ]b4_parser_class_name[::yystos_[] =
- {
- ]b4_stos[
- };
-
-#if YYDEBUG
- /* TOKEN_NUMBER_[YYLEX-NUM] -- Internal symbol number corresponding
- to YYLEX-NUM. */
- const ]b4_int_type_for([b4_toknum])[
- ]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])[
- ]b4_parser_class_name[::yyr1_[] =
- {
- ]b4_r1[
- };
+]b4_parser_tables_define[
- /* 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
+]b4_token_table_if([], [[#if ]b4_api_PREFIX[DEBUG]])[
/* 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[
+ ]b4_tname[
};
-#endif
-#if YYDEBUG
- /* 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])[
- ]b4_parser_class_name[::yyprhs_[] =
- {
- ]b4_prhs[
- };
-
- /* YYRLINE[YYN] -- Source line where rule number YYN was defined. */
- const ]b4_int_type_for([b4_rline])[
- ]b4_parser_class_name[::yyrline_[] =
- {
- ]b4_rline[
- };
+]b4_token_table_if([[#if ]b4_api_PREFIX[DEBUG]])[
+]b4_integral_parser_table_define([rline], [b4_rline])[
// 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;
+ for (stack_type::const_iterator
+ i = yystack_.begin (),
+ i_end = yystack_.end ();
+ i != i_end; ++i)
+ *yycdebug_ << ' ' << i->state;
*yycdebug_ << std::endl;
}
int yynrhs = yyr2_[yyrule];
/* Print the symbols being reduced, and their result. */
*yycdebug_ << "Reducing stack by rule " << yyrule - 1
- << " (line " << yylno << "):" << std::endl;
+ << " (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)[);
- }
-#endif // YYDEBUG
-
- /* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */
- ]b4_parser_class_name[::token_number_type
- ]b4_parser_class_name[::yytranslate_ (int t)
- {
- static
- const token_number_type
- translate_table[] =
- {
- ]b4_translate[
- };
- if ((unsigned int) t <= yyuser_token_number_max_)
- return translate_table[t];
- else
- return yyundef_token_;
+ ]b4_rhs_data(yynrhs, yyi + 1)[);
}
+#endif // ]b4_api_PREFIX[DEBUG
- 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 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[;
-
+]b4_token_ctor_if([], [b4_yytranslate_define])[
]b4_namespace_close[
+]b4_epilogue[]dnl
+b4_output_end()
-]b4_epilogue
-dnl
-@output(b4_dir_prefix[]stack.hh@)@
-b4_copyright([Stack handling for Bison parsers in C++],
- [2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010])[
-
-#ifndef BISON_STACK_HH
-# define BISON_STACK_HH
-
-#include <deque>
-
-]b4_namespace_open[
- template <class T, class S = std::deque<T> >
- class stack
- {
- public:
-
- // Hide our reversed order.
- typedef typename S::reverse_iterator iterator;
- typedef typename S::const_reverse_iterator const_iterator;
-
- stack () : seq_ ()
- {
- }
-
- stack (unsigned int n) : seq_ (n)
- {
- }
-
- inline
- T&
- operator [] (unsigned int i)
- {
- return seq_[i];
- }
-
- inline
- const T&
- operator [] (unsigned int i) const
- {
- return seq_[i];
- }
-
- inline
- void
- push (const T& t)
- {
- seq_.push_front (t);
- }
-
- inline
- void
- pop (unsigned int n = 1)
- {
- for (; n; --n)
- seq_.pop_front ();
- }
-
- inline
- unsigned int
- height () const
- {
- return seq_.size ();
- }
-
- inline const_iterator begin () const { return seq_.rbegin (); }
- inline const_iterator end () const { return seq_.rend (); }
-
- private:
-
- S seq_;
- };
-
- /// Present a slice of the top of a stack.
- template <class T, class S = stack<T> >
- class slice
- {
- public:
-
- slice (const S& stack,
- unsigned int range) : stack_ (stack),
- range_ (range)
- {
- }
-
- inline
- const T&
- operator [] (unsigned int i) const
- {
- return stack_[range_ - i];
- }
-
- private:
-
- const S& stack_;
- unsigned int range_;
- };
-]b4_namespace_close[
-#endif // not BISON_STACK_HH[]dnl
-]
-m4_divert_pop(0)
+m4_popdef([b4_copyright_years])dnl
projects / bison.git / blobdiff