Avoid warnings from gcc -Wundef y.tab.c.

[bison.git] / data / glr.c

diff --git a/data/glr.c b/data/glr.c
index 49588fe1d1d6b561af25a4ac117081808df056fe..69bfef869d67a65093949716ab983cfaadaf1224 100644 (file)
--- a/data/glr.c
+++ b/data/glr.c
@@ -1,8 +1,8 @@
                                                                     -*- C -*-
 
 # GLR skeleton for Bison
-# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation,
-# Inc.
+# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 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
@@ -148,9 +148,9 @@ m4_define([b4_rhs_location],
 # We do want M4 expansion after # for CPP macros.
 m4_changecom()
 m4_divert_push(0)dnl
-@output(b4_parser_file_name@)
+@output(b4_parser_file_name@)@
 b4_copyright([Skeleton implementation for Bison GLR parsers in C],
-  [2002, 2003, 2004, 2005, 2006])
+             [2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009])
 [
 /* C GLR parser skeleton written by Paul Hilfinger.  */
 
@@ -248,7 +248,7 @@ 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)
@@ -412,9 +412,9 @@ static const ]b4_int_type_for([b4_merger])[ yymerger[] =
   ]b4_merger[
 };
 
-/* YYDEFACT[S] -- default rule to reduce with in state S when YYTABLE
-   doesn't specify something else to do.  Zero means the default is an
-   error.  */
+/* YYDEFACT[S] -- default reduction number in state S.  Performed when
+   YYTABLE doesn't specify something else to do.  Zero means the default
+   is an error.  */
 static const ]b4_int_type_for([b4_defact])[ yydefact[] =
 {
   ]b4_defact[
@@ -442,8 +442,7 @@ static const ]b4_int_type_for([b4_pgoto])[ yypgoto[] =
 
 /* YYTABLE[YYPACT[STATE-NUM]].  What to do in state STATE-NUM.  If
    positive, shift that token.  If negative, reduce the rule which
-   number is the opposite.  If zero, do what YYDEFACT says.
-   If YYTABLE_NINF, syntax error.  */
+   number is the opposite.  If YYTABLE_NINF, syntax error.  */
 #define YYTABLE_NINF ]b4_table_ninf[
 static const ]b4_int_type_for([b4_table])[ yytable[] =
 {
@@ -1013,17 +1012,15 @@ 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.  */
@@ -1033,10 +1030,8 @@ 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
@@ -1051,12 +1046,13 @@ 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];
@@ -2119,7 +2115,8 @@ yyreportSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
          char const *yyprefix = yyexpecting;
 
          /* 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.  */
@@ -2131,7 +2128,8 @@ yyreportSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
          yyfmt = yystpcpy (yyformat, yyunexpected);
 
          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)
                  {
@@ -2232,7 +2230,7 @@ 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)
@@ -2240,7 +2238,7 @@ 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;
       }
 
@@ -2261,7 +2259,7 @@ 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
@@ -2323,7 +2321,7 @@ 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
@@ -2637,17 +2635,17 @@ dnl glr.cc produces its own header.
 dnl
 m4_if(b4_skeleton, ["glr.c"],
 [b4_defines_if(
-[@output(b4_spec_defines_file@)
+[@output(b4_spec_defines_file@)@
 b4_copyright([Skeleton interface for Bison GLR parsers in C],
-  [2002, 2003, 2004, 2005, 2006])
+             [2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009])
 
 b4_shared_declarations
 
 b4_pure_if([],
-[[extern YYSTYPE b4_prefix][lval;]])
+[[extern YYSTYPE ]b4_prefix[lval;]])
 
 b4_locations_if([b4_pure_if([],
-[extern YYLTYPE b4_prefix[]lloc;])
+[extern YYLTYPE ]b4_prefix[lloc;])
 ])
 ])])
 m4_divert_pop(0)