Back out previous patch.

[bison.git] / data / glr.cc

diff --git a/data/glr.cc b/data/glr.cc
index 7cd9c10ddc464feba570a1893bea7f1b20cfe7de..d33d23e5fd52cd06cbef08c59be26c4328216929 100644 (file)
--- a/data/glr.cc
+++ b/data/glr.cc
@@ -1,7 +1,8 @@
-m4_divert(-1)                                                       -*- C -*-
+                                                                    -*- C -*-
 
 # C++ GLR skeleton for Bison
-# Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007 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
@@ -46,14 +47,21 @@ m4_divert(-1)                                                       -*- C -*-
 #   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_flag],     [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])
 
+m4_define([b4_parser_class_name],
+          [b4_percent_define_get([[parser_class_name]])])
+m4_define([b4_namespace],
+          [b4_percent_define_get([[namespace]])])
 
 # Save the parse parameters.
 m4_define([b4_parse_param_orig], m4_defn([b4_parse_param]))
@@ -87,8 +95,7 @@ m4_define([b4_yy_symbol_print_generate],
 
 # Declare yyerror.
 m4_append([b4_post_prologue],
-[/* Line __line__ of glr.cc.  */
-b4_syncline([@oline@], [@ofile@])
+[b4_syncline([@oline@], [@ofile@])
 
 b4_c_ansi_function_decl([yyerror],
     [static void],
@@ -99,8 +106,7 @@ b4_c_ansi_function_decl([yyerror],
 
 # Define yyerror.
 m4_append([b4_epilogue],
-[/* Line __line__ of glr.cc.  */
-b4_syncline([@oline@], [@ofile@])[
+[b4_syncline([@oline@], [@ofile@])[
 /*------------------.
 | Report an error.  |
 `------------------*/
@@ -121,8 +127,12 @@ namespace ]b4_namespace[
 ]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 YYDEBUG
+    ]m4_ifset([b4_parse_param], [  ], [ :])[yydebug_ (false),
+      yycdebug_ (&std::cerr)]m4_ifset([b4_parse_param], [,])[
+#endif]b4_parse_param_cons[
   {
   }
 
@@ -184,16 +194,16 @@ m4_pushdef([b4_parse_param], m4_defn([b4_parse_param_orig]))dnl
   ]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;
+    yydebug_ = l;
   }
 
-#endif /* ! YYDEBUG */
+#endif
 ]m4_popdef([b4_parse_param])dnl
 [} // namespace ]b4_namespace[
 
@@ -211,8 +221,8 @@ m4_defn([b4_parse_param])))],
 m4_include(b4_pkgdatadir/[glr.c])
 m4_popdef([b4_parse_param])
 
-
-@output @output_header_name@
+m4_divert_push(0)
+@output(b4_spec_defines_file@)
 b4_copyright([Skeleton interface for Bison GLR parsers in C++],
   [2002, 2003, 2004, 2005, 2006])[
 
@@ -221,6 +231,8 @@ b4_copyright([Skeleton interface for Bison GLR parsers in C++],
 #ifndef PARSER_HEADER_H
 # define PARSER_HEADER_H
 
+]b4_percent_code_get([[requires]])[
+
 #include <string>
 #include <iostream>
 
@@ -233,12 +245,6 @@ namespace ]b4_namespace[
   class location;
 }
 
-/* Copy the first part of user declarations.  */
-]b4_pre_prologue[
-
-]/* Line __line__ of glr.cc.  */
-b4_syncline([@oline@], [@ofile@])[
-
 #include "location.hh"
 
 /* Enabling traces.  */
@@ -246,19 +252,6 @@ b4_syncline([@oline@], [@ofile@])[
 # 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
-
-/* Enabling the token table.  */
-#ifndef YYTOKEN_TABLE
-# define YYTOKEN_TABLE ]b4_token_table[
-#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).  */
@@ -288,16 +281,17 @@ namespace ]b4_namespace[
 #ifndef YYSTYPE
 ]m4_ifdef([b4_stype],
 [    union semantic_type
-b4_stype
-/* Line __line__ of lalr1.cc.  */
-b4_syncline([@oline@], [@ofile@])
-       ;],
-[    typedef int 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_location_type[ location_type;
+    typedef ]b4_percent_define_get([[location_type]])[ location_type;
     /// Tokens.
     struct token
     {
@@ -352,7 +346,10 @@ b4_syncline([@oline@], [@ofile@])
                                   const semantic_type* yyvaluep,
                                   const location_type* yylocationp);
   private:
-#endif /* ! YYDEBUG */
+    /* Debugging.  */
+    int yydebug_;
+    std::ostream* yycdebug_;
+#endif
 
 
     /// \brief Reclaim the memory associated to a symbol.
@@ -365,13 +362,11 @@ b4_syncline([@oline@], [@ofile@])
                             semantic_type* yyvaluep,
                             location_type* yylocationp);
 
-    /* Debugging.  */
-    std::ostream* yycdebug_;
 ]b4_parse_param_vars[
   };
 
 ]dnl Redirections for glr.c.
-m4_ifset([b4_global_tokens_and_yystype],
+m4_ifval(b4_percent_define_get([[global_tokens_and_yystype]]),
 [b4_token_defines(b4_tokens)])
 [
 #ifndef YYSTYPE
@@ -383,4 +378,7 @@ m4_ifset([b4_global_tokens_and_yystype],
 
 }
 
-#endif /* ! defined PARSER_HEADER_H */]
+]b4_percent_code_get([[provides]])[]dnl
+
+[#endif /* ! defined PARSER_HEADER_H */]
+m4_divert_pop(0)