X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/a35f64eadecc2b12e36b3dd7e2027ebdbbf115a5..dc2825ae898c526ea3619450112b2ea44f437151:/src/bison.simple?ds=sidebyside

diff --git a/src/bison.simple b/src/bison.simple
index 50ff6427..e2b5d6fb 100644
--- a/src/bison.simple
+++ b/src/bison.simple
@@ -1,7 +1,5 @@
 /* -*-C-*-  Note some compilers choke on comments on `#line' lines.  */
 #line
-/* This file comes from bison-@bison_version@.  */
-
 /* Skeleton output parser for bison,
    Copyright 1984, 1989, 1990, 2000 Free Software Foundation, Inc.
 
@@ -80,10 +78,6 @@
 # define YYSTACK_ALLOC malloc
 #endif
 
-/* Note: there must be only one dollar sign in this file.
-   It is replaced by the list of actions, each action
-   as one case of the switch.  */
-
 #define yyerrok		(yyerrstatus = 0)
 #define yyclearin	(yychar = YYEMPTY)
 #define YYEMPTY		-2
@@ -96,7 +90,7 @@
    Once GCC version 2 has supplanted version 1, this can go.  */
 #define YYFAIL		goto yyerrlab
 #define YYRECOVERING()  (!!yyerrstatus)
-#define YYBACKUP(Token, Value) \
+#define YYBACKUP(Token, Value)					\
 do								\
   if (yychar == YYEMPTY && yylen == 1)				\
     {								\
@@ -117,7 +111,21 @@ while (0)
 #define YYERRCODE	256
 
 
-/* YYLEX -- calling `yylex' with the right arguments. */
+/* YYLLOC_DEFAULT -- Compute the default location (before the actions
+   are run).
+
+   When YYLLOC_DEFAULT is run, CURRENT is set the location of the
+   first token.  By default, to implement support for ranges, extend
+   its range to the last symbol.  */
+
+#ifndef YYLLOC_DEFAULT
+# define YYLLOC_DEFAULT(Current, Last)		\
+   Current.last_line   = Last.last_line;	\
+   Current.last_column = Last.last_column;
+#endif
+
+
+/* YYLEX -- calling `yylex' with the right arguments.  */
 
 #if YYPURE
 # if YYLSP_NEEDED
@@ -379,8 +387,8 @@ yynewstate:
       int size = yyssp - yyss + 1;
 
 #ifdef yyoverflow
-      /* Each stack pointer address is followed by the size of
-	 the data in use in that stack, in bytes.  */
+      /* Each stack pointer address is followed by the size of the
+	 data in use in that stack, in bytes.  */
 # if YYLSP_NEEDED
       /* This used to be a conditional around just the two extra args,
 	 but that might be undefined if yyoverflow is a macro.  */
@@ -571,7 +579,7 @@ yyreduce:
   yylen = yyr2[yyn];
 
   /* If YYLEN is nonzero, implement the default value of the action:
-     `{dollar}{dollar} = {dollar}1'.
+     `$$ = $1'.
 
      Otherwise, the following line sets YYVAL to the semantic value of
      the lookahead token.  This behavior is undocumented and Bison
@@ -579,22 +587,12 @@ yyreduce:
      unconditionally makes the parser a bit smaller, and it avoids a
      GCC warning that YYVAL may be used uninitialized.  */
   yyval = yyvsp[1-yylen];
+
 #if YYLSP_NEEDED
-  /* Implement default location.  If the rhs is empty, extend YYLOC to
-     YYLLOC, which corresponds to the current token, otherwise
-     implement `@{dollar} = Starts at @1, ends at @YYLEN'.  */
-  if (yylen > 0)
-    {
-      yyloc = yylsp[1-yylen];
-      yyloc.last_line = yylsp[0].last_line;
-      yyloc.last_column = yylsp[0].last_column;
-    }
-  else
-    {
-      yyloc.last_line = yylsp[0].last_line;
-      yyloc.last_column = yylsp[0].last_column;
-      yyloc.text = 0;
-    }
+  /* Similarly for the default location.  Let the user run additional
+     commands if for instance locations are ranges.  */
+  yyloc = yylsp[1-yylen];
+  YYLLOC_DEFAULT (yyloc, yylsp[0]);
 #endif
 
 #if YYDEBUG
@@ -613,7 +611,7 @@ yyreduce:
       fprintf (stderr, " -> %s\n", yytname[yyr1[yyn]]);
     }
 #endif
-$ /* The action file replaces this line marked with this dollarsign. */
+%% actions /* The action file replaces this line. */
 #line
 
   yyvsp -= yylen;
@@ -674,7 +672,7 @@ yyerrlab:
 	  count = 0;
 	  /* Start X at -yyn if nec to avoid negative indexes in yycheck.  */
 	  for (x = (yyn < 0 ? -yyn : 0);
-	       x < (sizeof (yytname) / sizeof (char *)); x++)
+	       x < (int) (sizeof (yytname) / sizeof (char *)); x++)
 	    if (yycheck[x + yyn] == x)
 	      size += strlen (yytname[x]) + 15, count++;
 	  size += strlen ("parse error, unexpected `") + 1;
@@ -690,7 +688,7 @@ yyerrlab:
 		{
 		  count = 0;
 		  for (x = (yyn < 0 ? -yyn : 0);
-		       x < (sizeof (yytname) / sizeof (char *)); x++)
+		       x < (int) (sizeof (yytname) / sizeof (char *)); x++)
 		    if (yycheck[x + yyn] == x)
 		      {
 			strcat (msg, count == 0 ? ", expecting `" : " or `");