1 files changed, 81 insertions, 0 deletions
diff --git a/trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Synchronizer.java b/trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Synchronizer.java
new file mode 100644
index 0000000..f2fca52
--- /dev/null
+++ b/trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Synchronizer.java
@@ -0,0 +1,81 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Delegator.java, released
+ * Sep 27, 2000.
+ *
+ * The Initial Developer of the Original Code is
+ * Matthias Radestock. <matthias@sorted.org>.
+ * Portions created by the Initial Developer are Copyright (C) 2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript;
+
+/**
+ * This class provides support for implementing Java-style synchronized
+ * methods in Javascript.
+ *
+ * Synchronized functions are created from ordinary Javascript
+ * functions by the <code>Synchronizer</code> constructor, e.g.
+ * <code>new Packages.org.mozilla.javascript.Synchronizer(fun)</code>.
+ * The resulting object is a function that establishes an exclusive
+ * lock on the <code>this</code> object of its invocation.
+ *
+ * The Rhino shell provides a short-cut for the creation of
+ * synchronized methods: <code>sync(fun)</code> has the same effect as
+ * calling the above constructor.
+ *
+ * @see org.mozilla.javascript.Delegator
+ * @author Matthias Radestock
+ */
+
+public class Synchronizer extends Delegator {
+
+    /**
+     * Create a new synchronized function from an existing one.
+     *
+     * @param obj the existing function
+     */
+    public Synchronizer(Scriptable obj) {
+        super(obj);
+    }
+
+    /**
+     * @see org.mozilla.javascript.Function#call
+     */
+    public Object call(Context cx, Scriptable scope, Scriptable thisObj,
+                       Object[] args)
+    {
+        synchronized(thisObj instanceof Wrapper ? ((Wrapper)thisObj).unwrap() : thisObj) {
+            return ((Function)obj).call(cx,scope,thisObj,args);
+        }
+    }
+}