# HG changeset patch
# User Jaroslav Tulach <jtulach@netbeans.org>
# Date 1353539059 -3600
# Node ID 23047f655bfde730305c2abe899ed6aa57af02f0
# Parent  fb6298cc9ec51c70aedc72822f9dd223aa3123f5
Bunch of bit arithmetics to compute string hashCode acceptably

diff -r fb6298cc9ec5 -r 23047f655bfd emul/src/main/resources/org/apidesign/vm4brwsr/emul/java_lang_String.js
--- a/emul/src/main/resources/org/apidesign/vm4brwsr/emul/java_lang_String.js	Wed Nov 21 23:55:09 2012 +0100
+++ b/emul/src/main/resources/org/apidesign/vm4brwsr/emul/java_lang_String.js	Thu Nov 22 00:04:19 2012 +0100
@@ -344,7 +344,8 @@
     var h = 0;
     var s = self.toString();
     for (var i = 0; i < s.length; i++) {
-        h = 31 * h + s.charCodeAt(i);
+        var high = (h >> 16) & 0xffff, low = h & 0xffff;
+        h = (((((31 * high) & 0xffff) << 16) >>> 0) + (31 * low) + s.charCodeAt(i)) & 0xffffffff;
     }
     return h;
 }