decode: Rewrite .scan() to avoid making a new scanner

1 files changed, 5 insertions, 4 deletions

diff --git a/decode.go b/decode.go
index 645f8de..2078f92 100644
--- a/decode.go
+++ b/decode.go
@@ -760,14 +760,15 @@ func (dec *Decoder) decode(val reflect.Value, nullOK bool) {
 }
 
 func (dec *Decoder) scan(out fastio.RuneWriter) {
-	limiter := dec.limitingScanner()
+	dec.io.PushReadBarrier()
 	for {
-		c, _, err := limiter.ReadRune()
-		if err == io.EOF {
-			return
+		c, t := dec.readRune()
+		if t == jsonparse.RuneTypeEOF {
+			break
 		}
 		_, _ = out.WriteRune(c)
 	}
+	dec.io.PopReadBarrier()
 }
 
 func (dec *Decoder) scanNumber(gTyp reflect.Type, out fastio.RuneWriter) {