From: Father Chrysostomos <sprout@cpan.org>
Date: Tue, 3 Jul 2012 21:00:00 +0000 (-0700)
Subject: parser.h: Add comments explaining *bufptr
X-Git-Tag: upstream/5.20.0~6157
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a0dffe9bf14c9669153ccc3d5c9341d4864848dd;p=platform%2Fupstream%2Fperl.git

parser.h: Add comments explaining *bufptr
---

diff --git a/parser.h b/parser.h
index de69a2d..1d5a7a8 100644
--- a/parser.h
+++ b/parser.h
@@ -64,9 +64,11 @@ typedef struct yy_parser {
     I32		lex_allbrackets;/* (), [], {}, ?: bracket count */
     SUBLEXINFO	sublex_info;
     SV		*linestr;	/* current chunk of src text */
-    char	*bufptr;	
-    char	*oldbufptr;	
-    char	*oldoldbufptr;	
+    char	*bufptr;	/* carries the cursor (current parsing
+				   position) from one invocation of yylex
+				   to the next */
+    char	*oldbufptr;	/* in yylex, beginning of current token */
+    char	*oldoldbufptr;	/* in yylex, beginning of previous token */
     char	*bufend;	
     char	*linestart;	/* beginning of most recently read line */
     char	*last_uni;	/* position of last named-unary op */