play with tweaks to yajl_string_scan: use ptrs to remove an inc in tight loop.lxrperf_ptrs

1 files changed, 4 insertions, 7 deletions

diff --git a/src/yajl_lex.c b/src/yajl_lex.c
index b098e6a..a1c8719 100644
--- a/src/yajl_lex.c
+++ b/src/yajl_lex.c
@@ -255,13 +255,10 @@ static size_t
 yajl_string_scan(const unsigned char * buf, size_t len, int utf8check)
 {
     unsigned char mask = IJC|NFP|(utf8check ? NUC : 0);
-    size_t skip = 0;
-    while (skip < len && !(charLookupTable[*buf] & mask))
-    {
-        skip++;
-        buf++;
-    }
-    return skip;
+    const unsigned char * orig = buf;
+    const unsigned char * end = buf + len;
+    while (buf < end && !(charLookupTable[*buf] & mask)) buf++;
+    return buf - orig;
 }
 
 static yajl_tok