X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/17acead581306a47622213c3ff949bb237b1268f..2cdb2a7b057fbcb3278427f2d623ea9dcf8a5312:/data/yacc.c

diff --git a/data/yacc.c b/data/yacc.c
index 31ee8436..35e8da4f 100644
--- a/data/yacc.c
+++ b/data/yacc.c
@@ -307,6 +307,12 @@ b4_location_if(
 
 #endif
 
+#if defined (__STDC__) || defined (__cplusplus)
+   typedef signed char yysigned_char;
+#else
+   typedef short yysigned_char;
+#endif
+
 /* YYFINAL -- State number of the termination state. */
 #define YYFINAL  b4_final_state_number
 #define YYLAST   b4_last
@@ -414,7 +420,8 @@ 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.  */
+   number is the opposite.  If zero, do what YYDEFACT says.
+   If YYTABLE_NINF, parse error.  */
 #define YYTABLE_NINF b4_table_ninf
 static const b4_int_type_for([b4_table]) yytable[[]] =
 {
@@ -499,13 +506,14 @@ while (0)
 
 /* YYLEX -- calling `yylex' with the right arguments.  */
 
-b4_pure_if(
-[#ifdef YYLEX_PARAM
-# define YYLEX	yylex (&yylval[]b4_location_if([, &yylloc]), YYLEX_PARAM)
+#ifdef YYLEX_PARAM
+# define YYLEX yylex (b4_pure_if([&yylval[]b4_location_if([, &yylloc]), ])YYLEX_PARAM)
 #else
-# define YYLEX	yylex (&yylval[]b4_location_if([, &yylloc]))
-#endif],
-[#define YYLEX	yylex ()])
+# define YYLEX b4_c_function_call([yylex], [int],
+                   b4_pure_if([[[[]], [[&yylval]]],
+                               b4_location_if([[[], [&yylloc]],])])
+                   m4_fst(b4_lex_param))
+#endif
 
 /* Enable debugging if requested.  */
 #if YYDEBUG
@@ -917,28 +925,19 @@ yybackup:
       YYDPRINTF ((stderr, "\n"));
     }
 
+  /* If the proper action on seeing token YYCHAR1 is to reduce or to
+     detect an error, take that action.  */
   yyn += yychar1;
   if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yychar1)
     goto yydefault;
-
   yyn = yytable[yyn];
-
-  /* yyn is what to do for this token type in this state.
-     Negative => reduce, -yyn is rule number.
-     Positive => shift, yyn is new state.
-       New state is final state => don't bother to shift,
-       just return success.
-     0, or most negative number => error.  */
-
-  if (yyn < 0)
+  if (yyn <= 0)
     {
-      if (yyn == YYTABLE_NINF)
+      if (yyn == 0 || yyn == YYTABLE_NINF)
 	goto yyerrlab;
       yyn = -yyn;
       goto yyreduce;
     }
-  else if (yyn == 0)
-    goto yyerrlab;
 
   if (yyn == YYFINAL)
     YYACCEPT;