portability: fix pointer arithmetic to conform to C standard.

[bison.git] / data / lalr1.cc

diff --git a/data/lalr1.cc b/data/lalr1.cc
index 8e79333e6e9b97e6332c9994ec4164c707c75334..e4cbf6f7c62f42d378b9f9b3419ed470969b7d61 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]])])
@@ -147,6 +146,7 @@ dnl FIXME: This is wrong, we want computed header guards.
 ]b4_percent_code_get([[requires]])[
 
 ]b4_parse_assert_if([#include <cassert>])[
+#include <stdexcept>
 #include <string>
 #include <iostream>
 #include "stack.hh"
@@ -320,7 +320,7 @@ do {                                                            \
       /// The state.
       state_type state;
 
-      /// Return the type corresponding to this state.
+      /// The type (corresponding to \a state).
       inline int type_get_ () const;
     };
 
@@ -397,7 +397,7 @@ 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)
@@ -689,7 +689,7 @@ 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;
@@ -814,12 +814,21 @@ m4_ifdef([b4_lex_param], [, ]b4_lex_param)));])[
 
     // Perform the reduction.
     YY_REDUCE_PRINT (yyn);
-    switch (yyn)
+    try
+    {
+      switch (yyn)
       {
 ]b4_user_actions[
        default:
           break;
       }
+    }
+    catch (const syntax_error& yyexc)
+    {
+      error (]b4_args(b4_locations_if([yyexc.location]),
+                      [[yyexc.what()]])[);
+      YYERROR;
+    }
     YY_SYMBOL_PRINT ("-> $$ =", yylhs);
 ]b4_variant_if([[
     // Destroy the rhs symbols.
@@ -857,7 +866,7 @@ 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
@@ -866,7 +875,7 @@ 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;
@@ -888,7 +897,7 @@ 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
@@ -922,14 +931,14 @@ 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;