-m4_divert(-1) -*- C -*-
+ -*- C -*-
# C++ GLR skeleton for Bison
-# Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
-# This program is free software; you can redistribute it and/or modify
+# 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
-# the Free Software Foundation; either version 2 of the License, or
+# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
-
+#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
-
+#
# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-# 02110-1301 USA
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
# This skeleton produces a C++ class that encapsulates a C glr parser.
# user must initialize the first positions (in particular the
# filename member).
-
# We require a pure interface using locations.
-m4_define([b4_location_flag], [1])
-m4_define([b4_pure], [1])
+m4_define([b4_locations_flag], [1])
+m4_define([b4_pure_flag], [1])
+
+# The header is mandatory.
+b4_defines_if([],
+ [b4_fatal([b4_skeleton[: using %%defines is mandatory]])])
m4_include(b4_pkgdatadir/[c++.m4])
-m4_include(b4_pkgdatadir/[location.cc])
+b4_percent_define_ifdef([[api.location.type]], [],
+ [m4_include(b4_pkgdatadir/[location.cc])])
+m4_define([b4_parser_class_name],
+ [b4_percent_define_get([[parser_class_name]])])
# Save the parse parameters.
m4_define([b4_parse_param_orig], m4_defn([b4_parse_param]))
[static void],
[[FILE *], []],
[[int yytype], [yytype]],
- [[const yy::b4_parser_class_name::semantic_type *yyvaluep],
- [yyvaluep]],
- [[const yy::b4_parser_class_name::location_type *yylocationp],
- [yylocationp]],
+ [[const ]b4_namespace_ref::b4_parser_class_name[::semantic_type *yyvaluep],
+ [yyvaluep]],
+ [[const ]b4_namespace_ref::b4_parser_class_name[::location_type *yylocationp],
+ [yylocationp]],
b4_parse_param)[
{
]b4_parse_param_use[]dnl
-[ yyparser.yy_symbol_print_ (yytype, yyvaluep]b4_location_if([, yylocationp])[);
+[ yyparser.yy_symbol_print_ (yytype, yyvaluep]b4_locations_if([, yylocationp])[);
}
-]])
-
-
-# Declare yyerror.
-m4_append([b4_post_prologue],
-[/* Line __line__ of glr.cc. */
-b4_syncline([@oline@], [@ofile@])
-
-b4_c_ansi_function_decl([yyerror],
+]])[
+
+# Hijack the initial action to initialize the locations.
+]b4_locations_if([b4_percent_define_ifdef([[api.location.type]], [],
+[m4_define([b4_initial_action],
+[yylloc.initialize ();]m4_ifdef([b4_initial_action], [
+m4_defn([b4_initial_action])]))])])[
+
+# Hijack the post prologue to insert early definition of YYLLOC_DEFAULT
+# and declaration of yyerror.
+]m4_append([b4_post_prologue],
+[b4_syncline([@oline@], [@ofile@])[
+]b4_yylloc_default_define[
+#define YYRHSLOC(Rhs, K) ((Rhs)[K].yystate.yyloc)
+]b4_c_ansi_function_decl([yyerror],
[static void],
- [[yy::b4_parser_class_name::location_type *yylocationp], [yylocationp]],
+ [[const ]b4_namespace_ref::b4_parser_class_name[::location_type *yylocationp],
+ [yylocationp]],
b4_parse_param,
[[const char* msg], [msg]])])
-# Define yyerror.
+# Hijack the epilogue to define implementations (yyerror, parser member
+# functions etc.).
m4_append([b4_epilogue],
-[/* Line __line__ of glr.cc. */
-b4_syncline([@oline@], [@ofile@])[
+[b4_syncline([@oline@], [@ofile@])[
/*------------------.
| Report an error. |
`------------------*/
]b4_c_ansi_function_def([yyerror],
[static void],
- [[yy::b4_parser_class_name::location_type *yylocationp], [yylocationp]],
+ [[const ]b4_namespace_ref::b4_parser_class_name[::location_type *yylocationp],
+ [yylocationp]],
b4_parse_param,
[[const char* msg], [msg]])[
{
}
-namespace yy
-{
+]b4_namespace_open[
]dnl In this section, the parse param are the original parse_params.
m4_pushdef([b4_parse_param], m4_defn([b4_parse_param_orig]))dnl
[ /// Build a parser object.
- ]b4_parser_class_name::b4_parser_class_name[ (]b4_parse_param_decl[)
- : yycdebug_ (&std::cerr)]b4_parse_param_cons[
+ ]b4_parser_class_name::b4_parser_class_name[ (]b4_parse_param_decl[)]m4_ifset([b4_parse_param], [
+ :])[
+#if ]b4_api_PREFIX[DEBUG
+ ]m4_ifset([b4_parse_param], [ ], [ :])[
+ yycdebug_ (&std::cerr)]m4_ifset([b4_parse_param], [,])[
+#endif]b4_parse_param_cons[
{
}
return ::yyparse (*this]b4_user_args[);
}
-#if YYDEBUG
+#if ]b4_api_PREFIX[DEBUG
/*--------------------.
| Print this symbol. |
`--------------------*/
inline void
]b4_parser_class_name[::yy_symbol_value_print_ (int yytype,
- const semantic_type* yyvaluep, const location_type* yylocationp)
+ const semantic_type* yyvaluep,
+ const location_type* yylocationp)
{
- /* Pacify ``unused variable'' warnings. */
- YYUSE (yyvaluep);
YYUSE (yylocationp);
+ YYUSE (yyvaluep);
+ std::ostream& yyoutput = debug_stream ();
+ std::ostream& yyo = yyoutput;
+ YYUSE (yyo);
switch (yytype)
{
]m4_map([b4_symbol_actions], m4_defn([b4_symbol_printers]))dnl
[ default:
- break;
+ break;
}
}
void
]b4_parser_class_name[::yy_symbol_print_ (int yytype,
- const semantic_type* yyvaluep, const location_type* yylocationp)
+ const semantic_type* yyvaluep,
+ const location_type* yylocationp)
{
*yycdebug_ << (yytype < YYNTOKENS ? "token" : "nterm")
- << ' ' << yytname[yytype] << " ("
- << *yylocationp << ": ";
+ << ' ' << yytname[yytype] << " ("
+ << *yylocationp << ": ";
yy_symbol_value_print_ (yytype, yyvaluep, yylocationp);
*yycdebug_ << ')';
}
]b4_parser_class_name[::debug_level_type
]b4_parser_class_name[::debug_level () const
{
- return ::yydebug;
+ return yydebug;
}
void
]b4_parser_class_name[::set_debug_level (debug_level_type l)
{
- ::yydebug = l;
+ // Actually, it is yydebug which is really used.
+ yydebug = l;
}
-#endif /* ! YYDEBUG */
+#endif
]m4_popdef([b4_parse_param])dnl
-[} // namespace yy
-
-]])
+b4_namespace_close])
# Let glr.c believe that the user arguments include the parser itself.
m4_ifset([b4_parse_param],
[m4_pushdef([b4_parse_param],
- m4_dquote([[[yy::b4_parser_class_name& yyparser], [[yyparser]]],]
-m4_defn([b4_parse_param])))],
+ [[b4_namespace_ref::b4_parser_class_name[& yyparser], [[yyparser]]],]
+m4_defn([b4_parse_param]))],
[m4_pushdef([b4_parse_param],
- [[[[yy::b4_parser_class_name& yyparser], [[yyparser]]]]])
+ [[b4_namespace_ref::b4_parser_class_name[& yyparser], [[yyparser]]]])
])
m4_include(b4_pkgdatadir/[glr.c])
m4_popdef([b4_parse_param])
-
-@output @output_header_name@
-b4_copyright([C++ Skeleton parser for GLALR(1) parsing with Bison],
- [2002, 2003, 2004, 2005, 2006])[
+b4_output_begin([b4_spec_defines_file])
+b4_copyright([Skeleton interface for Bison GLR parsers in C++],
+ [2002-2006, 2009-2012])[
/* C++ GLR parser skeleton written by Akim Demaille. */
-#ifndef PARSER_HEADER_H
-# define PARSER_HEADER_H
-
-#include <string>
-#include <iostream>
-
-/* Using locations. */
-#define YYLSP_NEEDED ]b4_locations_flag[
-
-namespace yy
-{
- class position;
- class location;
-}
-
-/* Copy the first part of user declarations. */
-]b4_pre_prologue[
+]b4_cpp_guard_open([b4_spec_defines_file])[
-]/* Line __line__ of glr.cc. */
-b4_syncline([@oline@], [@ofile@])[
+]b4_percent_code_get([[requires]])[
-#include "location.hh"
+# include <string>
+# include <iostream>
+]b4_percent_define_ifdef([[api.location.type]], [],
+ [[# include "location.hh"]])[
-/* Enabling traces. */
-#ifndef YYDEBUG
-# define YYDEBUG ]b4_debug[
-#endif
-
-/* Enabling verbose error messages. */
-#ifdef YYERROR_VERBOSE
-# undef YYERROR_VERBOSE
-# define YYERROR_VERBOSE 1
-#else
-# define YYERROR_VERBOSE ]b4_error_verbose[
-#endif
-
-/* Enabling the token table. */
-#ifndef YYTOKEN_TABLE
-# define YYTOKEN_TABLE ]b4_token_table[
-#endif
-
-#if 0
-/* Copy the second part of user declarations. */
-]b4_post_prologue[
-
-]/* Line __line__ of glr.cc. */
-
-b4_syncline([@oline@], [@ofile@])[
-#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). */
-
-#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 (/*CONSTCOND*/ 0)
-#endif
+]b4_YYDEBUG_define[
-namespace yy
-{
+]b4_namespace_open[
/// A Bison parser.
class ]b4_parser_class_name[
{
public:
/// Symbol semantic values.
-#ifndef YYSTYPE
+# ifndef ]b4_api_PREFIX[STYPE
]m4_ifdef([b4_stype],
[ union semantic_type
-b4_stype
-/* Line __line__ of lalr1.cc. */
-b4_syncline([@oline@], [@ofile@])
- ;],
-[ typedef int semantic_type;])[
-#else
- typedef YYSTYPE semantic_type;
-#endif
+ {
+b4_user_stype
+ };],
+[m4_if(b4_tag_seen_flag, 0,
+[[ typedef int semantic_type;]],
+[[ typedef ]b4_api_PREFIX[STYPE semantic_type;]])])[
+# else
+ typedef ]b4_api_PREFIX[STYPE semantic_type;
+# endif
/// Symbol locations.
- typedef ]b4_location_type[ location_type;
+ typedef ]b4_percent_define_get([[api.location.type]],
+ [[location]])[ location_type;
/// Tokens.
struct token
{
virtual void error (const location_type& loc, const std::string& msg);
private:
-#if YYDEBUG
+# if ]b4_api_PREFIX[DEBUG
public:
/// \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);
+ 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);
+ const semantic_type* yyvaluep,
+ const location_type* yylocationp);
private:
-#endif /* ! YYDEBUG */
-
-
- /// \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);
-
/* Debugging. */
std::ostream* yycdebug_;
+# endif
+
]b4_parse_param_vars[
};
]dnl Redirections for glr.c.
-m4_ifset([b4_global_tokens_and_yystype],
+b4_percent_define_flag_if([[global_tokens_and_yystype]],
[b4_token_defines(b4_tokens)])
[
-#ifndef YYSTYPE
-# define YYSTYPE yy::]b4_parser_class_name[::semantic_type
+#ifndef ]b4_api_PREFIX[STYPE
+# define ]b4_api_PREFIX[STYPE ]b4_namespace_ref[::]b4_parser_class_name[::semantic_type
#endif
-#ifndef YYLTYPE
-# define YYLTYPE yy::]b4_parser_class_name[::location_type
+#ifndef ]b4_api_PREFIX[LTYPE
+# define ]b4_api_PREFIX[LTYPE ]b4_namespace_ref[::]b4_parser_class_name[::location_type
#endif
-}
-
-#endif /* ! defined PARSER_HEADER_H */]
+]b4_namespace_close[
+]b4_percent_code_get([[provides]])[
+]b4_cpp_guard_close([b4_spec_defines_file])[
+]b4_output_end()
projects / bison.git / blobdiff