lalr1.cc: remove useless forward declaration.

[bison.git] / data / glr.c

diff --git a/data/glr.c b/data/glr.c
index d67ec421e6543fe5fb9ce4a18eaa857fbf0bd705..bb0f6d7f33d37b8ddad99ed5a624ce2a5c584acb 100644 (file)
--- a/data/glr.c
+++ b/data/glr.c
@@ -1,8 +1,7 @@
                                                                     -*- C -*-
 
 # GLR 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
@@ -158,7 +157,7 @@ m4_changecom()
 m4_divert_push(0)dnl
 @output(b4_parser_file_name@)@
 b4_copyright([Skeleton implementation for Bison GLR parsers in C],
-             [2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009])
+             [2002-2010])
 [
 /* C GLR parser skeleton written by Paul Hilfinger.  */
 
@@ -256,7 +255,7 @@ b4_percent_code_get[]dnl
 #include <string.h>
 
 #ifndef YY_
-# if YYENABLE_NLS
+# if defined YYENABLE_NLS && YYENABLE_NLS
 #  if ENABLE_NLS
 #   include <libintl.h> /* INFRINGES ON USER NAME SPACE */
 #   define YY_(msgid) dgettext ("bison-runtime", msgid)
@@ -318,7 +317,8 @@ b4_percent_code_get[]dnl
 #ifndef __attribute__
 /* This feature is available in gcc versions 2.5 and later.  */
 # if (! defined __GNUC__ || __GNUC__ < 2 \
-      || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__)
+      || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) \
+      || (defined __STRICT_ANSI__ && __STRICT_ANSI__))
 #  define __attribute__(Spec) /* empty */
 # endif
 #endif
@@ -953,17 +953,15 @@ yylhsNonterm (yyRuleNum yyrule)
   return yyr1[yyrule];
 }
 
-#define yyis_pact_ninf(yystate) \
-  ]m4_if(m4_eval(b4_pact_ninf < b4_pact_min), [1],
-        [0],
-        [((yystate) == YYPACT_NINF)])[
+#define yypact_value_is_default(yystate) \
+  ]b4_table_value_equals([[pact]], [[yystate]], [b4_pact_ninf])[
 
 /** True iff LR state STATE has only a default reduction (regardless
  *  of token).  */
 static inline yybool
 yyisDefaultedState (yyStateNum yystate)
 {
-  return yyis_pact_ninf (yypact[yystate]);
+  return yypact_value_is_default (yypact[yystate]);
 }
 
 /** The default reduction for STATE, assuming it has one.  */
@@ -973,10 +971,8 @@ yydefaultAction (yyStateNum yystate)
   return yydefact[yystate];
 }
 
-#define yyis_table_ninf(yytable_value) \
-  ]m4_if(m4_eval(b4_table_ninf < b4_table_min), [1],
-        [YYID (0)],
-        [((yytable_value) == YYTABLE_NINF)])[
+#define yytable_value_is_error(yytable_value) \
+  ]b4_table_value_equals([[table]], [[yytable_value]], [b4_table_ninf])[
 
 /** Set *YYACTION to the action to take in YYSTATE on seeing YYTOKEN.
  *  Result R means
@@ -991,12 +987,13 @@ yygetLRActions (yyStateNum yystate, int yytoken,
                int* yyaction, const short int** yyconflicts)
 {
   int yyindex = yypact[yystate] + yytoken;
-  if (yyindex < 0 || YYLAST < yyindex || yycheck[yyindex] != yytoken)
+  if (yypact_value_is_default (yypact[yystate])
+      || yyindex < 0 || YYLAST < yyindex || yycheck[yyindex] != yytoken)
     {
       *yyaction = -yydefact[yystate];
       *yyconflicts = yyconfl;
     }
-  else if (! yyis_table_ninf (yytable[yyindex]))
+  else if (! yytable_value_is_error (yytable[yyindex]))
     {
       *yyaction = yytable[yyindex];
       *yyconflicts = yyconfl + yyconflp[yyindex];
@@ -1011,8 +1008,7 @@ yygetLRActions (yyStateNum yystate, int yytoken,
 static inline yyStateNum
 yyLRgotoState (yyStateNum yystate, yySymbol yylhs)
 {
-  int yyr;
-  yyr = yypgoto[yylhs - YYNTOKENS] + yystate;
+  int yyr = yypgoto[yylhs - YYNTOKENS] + yystate;
   if (0 <= yyr && yyr <= YYLAST && yycheck[yyr] == yystate)
     return yytable[yyr];
   else
@@ -2049,7 +2045,8 @@ yyreportSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
          char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
 
          /* Start YYX at -YYN if negative to avoid negative indexes in
-            YYCHECK.  */
+            YYCHECK.  In other words, skip the first -YYN actions for this
+            state because they are default actions.  */
          int yyxbegin = yyn < 0 ? -yyn : 0;
 
          /* Stay within bounds of both yycheck and yytname.  */
@@ -2064,7 +2061,8 @@ yyreportSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
          yyarg[yycount++] = yytokenName (yytoken);
 
          for (yyx = yyxbegin; yyx < yyxend; ++yyx)
-           if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
+           if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR
+               && !yytable_value_is_error (yytable[yyx + yyn]))
              {
                if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
                  {
@@ -2175,7 +2173,7 @@ yyrecoverSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
            YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
          }
        yyj = yypact[yystackp->yytops.yystates[0]->yylrState];
-       if (yyis_pact_ninf (yyj))
+       if (yypact_value_is_default (yyj))
          return;
        yyj += yytoken;
        if (yyj < 0 || YYLAST < yyj || yycheck[yyj] != yytoken)
@@ -2183,7 +2181,7 @@ yyrecoverSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
            if (yydefact[yystackp->yytops.yystates[0]->yylrState] != 0)
              return;
          }
-       else if (yytable[yyj] != 0 && ! yyis_table_ninf (yytable[yyj]))
+       else if (! yytable_value_is_error (yytable[yyj]))
          return;
       }
 
@@ -2204,7 +2202,7 @@ yyrecoverSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
     {
       yyGLRState *yys = yystackp->yytops.yystates[0];
       yyj = yypact[yys->yylrState];
-      if (! yyis_pact_ninf (yyj))
+      if (! yypact_value_is_default (yyj))
        {
          yyj += YYTERROR;
          if (0 <= yyj && yyj <= YYLAST && yycheck[yyj] == YYTERROR
@@ -2266,7 +2264,7 @@ yyrecoverSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
   yychar = YYEMPTY;
   yylval = yyval_default;
 ]b4_locations_if([
-#if YYLTYPE_IS_TRIVIAL
+#if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL
   yylloc.first_line   = yylloc.last_line   = ]b4_location_initial_line[;
   yylloc.first_column = yylloc.last_column = ]b4_location_initial_column[;
 #endif
@@ -2580,7 +2578,7 @@ m4_if(b4_skeleton, ["glr.c"],
 [b4_defines_if(
 [@output(b4_spec_defines_file@)@
 b4_copyright([Skeleton interface for Bison GLR parsers in C],
-             [2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009])
+             [2002-2010])
 
 b4_shared_declarations