From 3a0ce97e28d4a0c3f3adb53c486130b17794b145 Mon Sep 17 00:00:00 2001
From: Kirill Korotaev <kirillx@gmail.com>
Date: Tue, 4 Feb 2020 18:14:50 +0300
Subject: [PATCH] slightly simplify unescapeStringToken() and remove wasEscaped
 flag

---
 jlexer/lexer.go | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/jlexer/lexer.go b/jlexer/lexer.go
index 62fbcf9..0254862 100644
--- a/jlexer/lexer.go
+++ b/jlexer/lexer.go
@@ -260,7 +260,6 @@ func findStringLen(data []byte) (isValid bool, length int) {
 // if no escaping is needed, original string is returned, otherwise - a new one allocated
 func (r *Lexer) unescapeStringToken() (err error) {
 	data := r.token.byteValue
-	wasEscaped := false
 	var unescapedData []byte
 
 	for {
@@ -275,9 +274,8 @@ func (r *Lexer) unescapeStringToken() (err error) {
 			return err
 		}
 
-		if !wasEscaped {
+		if unescapedData == nil {
 			unescapedData = make([]byte, 0, len(r.token.byteValue))
-			wasEscaped = true
 		}
 
 		var d [4]byte
@@ -288,7 +286,7 @@ func (r *Lexer) unescapeStringToken() (err error) {
 		data = data[i+escapedBytes:]
 	}
 
-	if wasEscaped {
+	if unescapedData != nil {
 		r.token.byteValue = append(unescapedData, data...)
 		r.token.byteValueCloned = true
 	}