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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * 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 mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1998
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ * pschwartau@netscape.com
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+/*
+ * Date: 14 Mar 2001
+ *
+ * SUMMARY: Utility functions for testing objects -
+ *
+ * Suppose obj is an instance of a native type, e.g. Number.
+ * Then obj.toString() invokes Number.prototype.toString().
+ * We would also like to access Object.prototype.toString().
+ *
+ * The difference is this: suppose obj = new Number(7).
+ * Invoking Number.prototype.toString() on this just returns 7.
+ * Object.prototype.toString() on this returns '[object Number]'.
+ *
+ * The getJSType() function below will return '[object Number]' for us.
+ * The getJSClass() function returns 'Number', the [[Class]] property of obj.
+ * See ECMA-262 Edition 3, 13-Oct-1999, Section 8.6.2
+ */
+//-----------------------------------------------------------------------------
+
+gTestsubsuite = 'Object';
+
+var cnNoObject = 'Unexpected Error!!! Parameter to this function must be an object';
+var cnNoClass = 'Unexpected Error!!! Cannot find Class property';
+var cnObjectToString = Object.prototype.toString;
+var GLOBAL = 'global';
+
+// checks that it's safe to call findType()
+function getJSType(obj)
+{
+ if (isObject(obj))
+ return findType(obj);
+ return cnNoObject;
+}
+
+
+// checks that it's safe to call findType()
+function getJSClass(obj)
+{
+ if (isObject(obj))
+ return findClass(findType(obj));
+ return cnNoObject;
+}
+
+
+function findType(obj)
+{
+ return cnObjectToString.apply(obj);
+}
+
+
+// given '[object Number]', return 'Number'
+function findClass(sType)
+{
+ var re = /^\[.*\s+(\w+)\s*\]$/;
+ var a = sType.match(re);
+
+ if (a && a[1])
+ return a[1];
+ return cnNoClass;
+}
+
+
+function isObject(obj)
+{
+ return obj instanceof Object;
+}
+