lua

commit 6956331093e3a8d21c795b3bb125594b8ed6617b
parent 92479f1a8bf62ab3ca0fe69f323407cf02c09719
Author: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date:   Mon, 18 May 2009 14:26:01 -0300

new macro 'zungetc'

Diffstat:
M
lzio.h
 | 
5
++++-

1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/lzio.h b/lzio.h
@@ -1,5 +1,5 @@
 /*
-** $Id: lzio.h,v 1.20 2005/04/25 19:24:10 roberto Exp roberto $
+** $Id: lzio.h,v 1.21 2005/05/17 19:49:15 roberto Exp roberto $
 ** Buffered streams
 ** See Copyright Notice in lua.h
 */
@@ -21,6 +21,9 @@ typedef struct Zio ZIO;
 
 #define zgetc(z)  (((z)->n--)>0 ?  char2int(*(z)->p++) : luaZ_fill(z))
 
+#define zungetc(z)	((z)->n++, (z)->p--)
+
+
 typedef struct Mbuffer {
   char *buffer;
   size_t n;