# C++ skeleton for Bison
-# Copyright (C) 2002-2011 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_pushdef([b4_copyright_years],
- [2002-2011])
+ [2002-2012])
m4_define([b4_parser_class_name],
[b4_percent_define_get([[parser_class_name]])])
b4_locations_if([b4_percent_define_ifdef([[location_type]], [],
[# Backward compatibility.
- m4_define([b4_location_constructors])
- m4_include(b4_pkgdatadir/[location.cc])])])
+ 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])])
m4_divert_push(0)dnl
@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. */
+/**
+ ** \file ]b4_spec_defines_file[
+ ** Define the ]b4_namespace_ref[::parser class.
+ */
-#ifndef PARSER_HEADER_H
-# define PARSER_HEADER_H
+/* C++ LALR(1) parser skeleton written by Akim Demaille. */
+]b4_cpp_guard_open([b4_spec_defines_file])[
]b4_percent_code_get([[requires]])[
-
-]b4_parse_assert_if([#include <cassert>])[
-#include <stdexcept>
-#include <string>
-#include <iostream>
-#include "stack.hh"
+]b4_parse_assert_if([# include <cassert>])[
+# include <stdexcept>
+# include <string>
+# include <iostream>
+# include "stack.hh"
]b4_locations_if([b4_percent_define_ifdef([[location_type]], [],
- [[#include "location.hh"]])])[
+ [[# include "location.hh"]])])[
]b4_variant_if([b4_namespace_open
b4_variant_define
b4_namespace_close])[
-/* Enabling traces. */
-#ifndef YYDEBUG
-# define YYDEBUG ]b4_parse_trace_if([1], [0])[
-#endif
-
-/* Enabling verbose error messages. */
-#ifdef YYERROR_VERBOSE
-# undef YYERROR_VERBOSE
-# define YYERROR_VERBOSE 1
-#else
-# define YYERROR_VERBOSE ]b4_error_verbose_if([1], [0])[
-#endif
-
-/* Enabling the token table. */
-#ifndef YYTOKEN_TABLE
-# define YYTOKEN_TABLE ]b4_token_table[
-#endif
+]b4_YYDEBUG_define[
]b4_namespace_open[
/// \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.
/// \param msg a description of the syntax error.
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;
static const ]b4_int_type(b4_pact_ninf, b4_pact_ninf)[ yypact_ninf_;
static const ]b4_int_type(b4_table_ninf, b4_table_ninf)[ yytable_ninf_;
- /* Tables. */
-]b4_parser_tables_declare[
-
-#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
+]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.
/// 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.
static inline token_number_type yytranslate_ (]b4_lex_symbol_if([token_type], [int])[ t);
-#if YYDEBUG
+#if ]b4_api_PREFIX[DEBUG
/// \brief Display a symbol type, value and location.
/// \param yyo The output stream.
/// \param yysym The symbol.
yyfinal_ = ]b4_final_state_number[, //< Termination state number.
yyterror_ = 1,
yyerrcode_ = 256,
- yyntokens_ = ]b4_tokens_number[, //< Number of tokens.
+ yyntokens_ = ]b4_tokens_number[ //< Number of tokens.
};
]b4_parse_param_vars[
]b4_percent_define_flag_if([[global_tokens_and_yystype]],
[b4_token_defines(b4_tokens)
-#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]])[]dnl
-
-[#endif /* ! defined PARSER_HEADER_H */]
+])[
+]b4_percent_code_get([[provides]])[
+]b4_cpp_guard_close([b4_spec_defines_file])
@output(b4_parser_file_name@)@
b4_copyright([Skeleton implementation for Bison LALR(1) parsers in C++])
b4_percent_code_get([[top]])[]dnl
#include "@basename(]b4_spec_defines_file[@)"
/* User implementation prologue. */
-]b4_user_post_prologue
-b4_percent_code_get[]dnl
+]b4_user_post_prologue[
+]b4_percent_code_get[
-[#ifndef YY_
+]b4_null_define[
+
+#ifndef YY_
# if defined YYENABLE_NLS && YYENABLE_NLS
# if ENABLE_NLS
# include <libintl.h> /* FIXME: INFRINGES ON USER NAME SPACE */
#endif
]b4_locations_if([dnl
-[/* 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].location)
-#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]])[
+[#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_)
yystack_print_ (); \
} while (false)
-#else /* !YYDEBUG */
+#else /* !]b4_api_PREFIX[DEBUG */
# define YYCDEBUG if (false) std::cerr
-# define YY_SYMBOL_PRINT(Title, Symbol) static_cast<void>(0)
+# 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 (yyempty = true)
/// 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[
]b4_parser_class_name[::yy_destroy_ (const char* yymsg,
symbol_base_type<Exact>& yysym) const
{
- int yytype = yysym.type_get ();
- YYUSE (yymsg);
if (yymsg)
YY_SYMBOL_PRINT (yymsg, yysym);
// User destructor.
+ int yytype = yysym.type_get ();
switch (yytype)
{
]b4_symbol_foreach([b4_symbol_destructor])dnl
b4_symbol_variant([[yytype]], [[yysym.value]], [[template destroy]])])[
}
-#if YYDEBUG
+#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([
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)
/// $$ and @@$.
stack_symbol_type yylhs;
- /// The return value of parse().
+ /// The return value of parse ().
int yyresult;
YYCDEBUG << "Starting parse" << std::endl;
location values to have been already stored, initialize these
stacks with a primary value. */
yystack_ = stack_type (0);
- yypush_ (0, 0, yyla);
+ yypush_ (YY_NULL, 0, yyla);
// A new symbol was pushed on the stack.
yynewstate:
if (yyempty)
{
YYCDEBUG << "Reading a token: ";
+ try
+ {
]b4_lex_symbol_if(
-[ yyla = b4_c_function_call([yylex], [symbol_type],
- m4_ifdef([b4_lex_param], b4_lex_param));],
-[ yyla.type = yytranslate_ (b4_c_function_call([yylex], [int],
- [[YYSTYPE*], [&yyla.value]][]dnl
+[ yyla = b4_c_function_call([yylex], [symbol_type],
+ m4_ifdef([b4_lex_param], b4_lex_param));],
+[ yyla.type = yytranslate_ (b4_c_function_call([yylex], [int],
+ [b4_api_PREFIX[STYPE*], [&yyla.value]][]dnl
b4_locations_if([, [[location*], [&yyla.location]]])dnl
m4_ifdef([b4_lex_param], [, ]b4_lex_param)));])[
+ }
+ catch (const syntax_error& yyexc)
+ {
+ error (yyexc);
+ goto yyerrlab1;
+ }
yyempty = false;
}
YY_SYMBOL_PRINT ("Next token is", yyla);
}
catch (const syntax_error& yyexc)
{
- error (]b4_args(b4_locations_if([yyexc.location]),
- [[yyexc.what()]])[);
+ error (yyexc);
YYERROR;
}
YY_SYMBOL_PRINT ("-> $$ =", yylhs);
// 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 contruction for this
+ // 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_ (0, yystack_[i]);]])[
+ yy_destroy_ (YY_NULL, yystack_[i]);]])[
yypop_ (yylen);
yylen = 0;
YY_STACK_PRINT ();
/* Shift the result of the reduction. */
- yypush_ (0, yylhs);
+ yypush_ (YY_NULL, yylhs);
goto yynewstate;
/*--------------------------------------.
return yyresult;
}
+ void
+ ]b4_parser_class_name[::error (const syntax_error& yyexc)
+ {
+ error (]b4_args(b4_locations_if([yyexc.location]),
+ [[yyexc.what()]])[);
+ }
+
// Generate an error message.
std::string
]b4_parser_class_name[::yysyntax_error_ (]dnl
}
}
- char const* yyformat = 0;
+ char const* yyformat = YY_NULL;
switch (yycount)
{
#define YYCASE_(N, S) \
]b4_parser_tables_define[
-#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*
{
]b4_tname[
};
-#endif
-#if YYDEBUG
+]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.
YY_SYMBOL_PRINT (" $" << yyi + 1 << " =",
]b4_rhs_data(yynrhs, yyi + 1)[);
}
-#endif // YYDEBUG
+#endif // ]b4_api_PREFIX[DEBUG
]b4_lex_symbol_if([], [b4_yytranslate_define])[
]b4_namespace_close[
projects / bison.git / blobdiff