1 files changed, 61 insertions, 0 deletions
diff --git a/js/src/Ice/HashUtil.js b/js/src/Ice/HashUtil.js
new file mode 100644
index 00000000000..7fe2f3f0c8a
--- /dev/null
+++ b/js/src/Ice/HashUtil.js
@@ -0,0 +1,61 @@
+// **********************************************************************
+//
+// Copyright (c) 2003-2014 ZeroC, Inc. All rights reserved.
+//
+// This copy of Ice is licensed to you under the terms described in the
+// ICE_LICENSE file included in this distribution.
+//
+// **********************************************************************
+
+(function(global){
+    require("Ice/StringUtil");
+    
+    var Ice = global.Ice || {};
+    
+    var StringUtil = Ice.StringUtil;
+
+    var HashUtil = {};
+
+    HashUtil.addBoolean = function(h, b)
+    {
+        return ((h << 5) + h) ^ (b ? 0 : 1);
+    };
+
+    HashUtil.addString = function(h, str)
+    {
+        if(str !== undefined && str !== null)
+        {
+            h = ((h << 5) + h) ^ StringUtil.hashCode(str);
+        }
+        return h;
+    };
+
+    HashUtil.addNumber = function(h, num)
+    {
+        return ((h << 5) + h) ^ num;
+    };
+
+    HashUtil.addHashable = function(h, obj)
+    {
+        if(obj !== undefined && obj !== null)
+        {
+            h = ((h << 5) + h) ^ obj.hashCode();
+        }
+        return h;
+    };
+    
+    HashUtil.addArray = function(h, arr, hashCode)
+    {
+        if(arr !== undefined && arr !== null)
+        {
+            for(var i = 0; i < arr.length; ++i)
+            {
+                h = hashCode(h, arr[i]);
+            }
+        }
+        return h;
+    };
+
+    Ice.HashUtil = HashUtil;
+    global.Ice = Ice;
+}(typeof (global) === "undefined" ? window : global));