c++: use YYRHSLOC.

[bison.git] / data / lalr1.cc

diff --git a/data/lalr1.cc b/data/lalr1.cc
index ac2fa35bc6e294d3778511b053d65a0ce8b4caee..8094cccffd08a4decc34aa29e2919ce0511f6ea4 100644 (file)
--- a/data/lalr1.cc
+++ b/data/lalr1.cc
@@ -1,7 +1,6 @@
 # C++ skeleton for Bison
 
-# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
-# Free Software Foundation, Inc.
+# Copyright (C) 2002-2010 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
@@ -29,7 +28,7 @@ m4_define([b4_integral_parser_table_declare],
 ])
 
 # 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])
@@ -116,7 +115,7 @@ m4_popdef([b4_dollar_dollar])dnl
 
 
 m4_pushdef([b4_copyright_years],
-           [2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009])
+           [2002-2010])
 
 m4_define([b4_parser_class_name],
           [b4_percent_define_get([[parser_class_name]])])
@@ -125,10 +124,10 @@ m4_define([b4_parser_class_name],
 b4_defines_if([],
               [b4_fatal([b4_skeleton[: using %%defines is mandatory]])])
 
-b4_locations_if(
-[# Backward compatibility.
-m4_define([b4_location_constructors])
-m4_include(b4_pkgdatadir/[location.cc])])
+b4_locations_if([b4_percent_define_ifdef([[location_type]], [],
+  [# 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])])
 
@@ -151,14 +150,12 @@ dnl FIXME: This is wrong, we want computed header guards.
 #include <string>
 #include <iostream>
 #include "stack.hh"
+]b4_locations_if([b4_percent_define_ifdef([[location_type]], [],
+                                          [[#include "location.hh"]])])[
 
-]b4_namespace_open[
-]b4_locations_if([  class position;
-  class location;])[
-]b4_variant_if([b4_variant_define])[
-]b4_namespace_close[
-
-]b4_locations_if([#include "location.hh"])[
+]b4_variant_if([b4_namespace_open
+b4_variant_define
+b4_namespace_close])[
 
 /* Enabling traces.  */
 #ifndef YYDEBUG
@@ -183,19 +180,20 @@ dnl FIXME: This is wrong, we want computed header guards.
    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 = (Rhs)[1].location.begin;                \
-      (Current).end   = (Rhs)[N].location.end;                 \
-    }                                                           \
-  else                                                          \
-    {                                                           \
-      (Current).begin = (Current).end = (Rhs)[0].location.end; \
-    }                                                           \
-} while (false)
+# 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_namespace_open[
@@ -321,7 +319,7 @@ do {                                                            \
       /// The state.
       state_type state;
 
-      /// Return the type corresponding to this state.
+      /// The type (corresponding to \a state).
       inline int type_get_ () const;
     };
 
@@ -398,7 +396,7 @@ m4_if(b4_prefix, [yy], [],
 b4_percent_code_get[]dnl
 
 [#ifndef YY_
-# if YYENABLE_NLS
+# if defined YYENABLE_NLS && YYENABLE_NLS
 #  if ENABLE_NLS
 #   include <libintl.h> /* FIXME: INFRINGES ON USER NAME SPACE */
 #   define YY_(msgid) dgettext ("bison-runtime", msgid)
@@ -690,7 +688,7 @@ b4_percent_code_get[]dnl
     symbol_type yyla;]b4_locations_if([[
 
     /// The locations where the error started and ended.
-    stack_symbol_type yyerror_range[2];]])[
+    stack_symbol_type yyerror_range[3];]])[
 
     /// $$ and @@$.
     stack_symbol_type yylhs;
@@ -867,7 +865,7 @@ m4_ifdef([b4_lex_param], [, ]b4_lex_param)));])[
       }
 
 ]b4_locations_if([[
-    yyerror_range[0].location = yyla.location;]])[
+    yyerror_range[1].location = yyla.location;]])[
     if (yyerrstatus_ == 3)
       {
        /* If just tried and failed to reuse lookahead token after an
@@ -876,7 +874,7 @@ m4_ifdef([b4_lex_param], [, ]b4_lex_param)));])[
         /* Return failure if at end of input.  */
         if (yyla.type == yyeof_)
           YYABORT;
-        else
+        else if (!yyempty)
           {
             yy_destroy_ ("Error: discarding", yyla);
             yyempty = true;
@@ -898,7 +896,7 @@ m4_ifdef([b4_lex_param], [, ]b4_lex_param)));])[
        code.  */
     if (false)
       goto yyerrorlab;]b4_locations_if([[
-    yyerror_range[0].location = yystack_[yylen - 1].location;]])b4_variant_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
@@ -932,14 +930,14 @@ m4_ifdef([b4_lex_param], [, ]b4_lex_param)));])[
           if (yystack_.size () == 1)
             YYABORT;
 ]b4_locations_if([[
-          yyerror_range[0].location = yystack_[0].location;]])[
+          yyerror_range[1].location = yystack_[0].location;]])[
           yy_destroy_ ("Error: popping", yystack_[0]);
           yypop_ ();
           YY_STACK_PRINT ();
         }
 ]b4_locations_if([[
-      yyerror_range[1].location = yyla.location;
-      YYLLOC_DEFAULT (error_token.location, (yyerror_range - 1), 2);]])[
+      yyerror_range[2].location = yyla.location;
+      YYLLOC_DEFAULT (error_token.location, yyerror_range, 2);]])[
 
       /* Shift the error token.  */
       error_token.state = yyn;