From ff52f47537c9bf5c6acc636f25ae5f7f70d20f3b Mon Sep 17 00:00:00 2001
From: Misko Hevery
Date: Fri, 15 Oct 2010 14:06:30 -0700
Subject: Fix unicode parsing Close #56

---
 src/Parser.js | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src')

diff --git a/src/Parser.js b/src/Parser.js
index 2c681be0..9082bb2a 100644
--- a/src/Parser.js
+++ b/src/Parser.js
@@ -170,6 +170,10 @@ function lex(text, parseStrings){
       if (escape) {
         if (ch == 'u') {
           var hex = text.substring(index + 1, index + 5);
+          if (!hex.match(/[\da-f]{4}/i))
+            throw "Lexer Error: Invalid unicode escape [\\u" +
+              hex + "] starting at column '" +
+              start + "' in expression '" + text + "'.";
           index += 4;
           string += String.fromCharCode(parseInt(hex, 16));
         } else {
-- 
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