1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/src/tests/ecma_3/Object/shell.js Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,71 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +/*
1.10 + * Date: 14 Mar 2001
1.11 + *
1.12 + * SUMMARY: Utility functions for testing objects -
1.13 + *
1.14 + * Suppose obj is an instance of a native type, e.g. Number.
1.15 + * Then obj.toString() invokes Number.prototype.toString().
1.16 + * We would also like to access Object.prototype.toString().
1.17 + *
1.18 + * The difference is this: suppose obj = new Number(7).
1.19 + * Invoking Number.prototype.toString() on this just returns 7.
1.20 + * Object.prototype.toString() on this returns '[object Number]'.
1.21 + *
1.22 + * The getJSType() function below will return '[object Number]' for us.
1.23 + * The getJSClass() function returns 'Number', the [[Class]] property of obj.
1.24 + * See ECMA-262 Edition 3, 13-Oct-1999, Section 8.6.2
1.25 + */
1.26 +//-----------------------------------------------------------------------------
1.27 +
1.28 +
1.29 +var cnNoObject = 'Unexpected Error!!! Parameter to this function must be an object';
1.30 +var cnNoClass = 'Unexpected Error!!! Cannot find Class property';
1.31 +var cnObjectToString = Object.prototype.toString;
1.32 +var GLOBAL = 'global';
1.33 +
1.34 +// checks that it's safe to call findType()
1.35 +function getJSType(obj)
1.36 +{
1.37 + if (isObject(obj))
1.38 + return findType(obj);
1.39 + return cnNoObject;
1.40 +}
1.41 +
1.42 +
1.43 +// checks that it's safe to call findType()
1.44 +function getJSClass(obj)
1.45 +{
1.46 + if (isObject(obj))
1.47 + return findClass(findType(obj));
1.48 + return cnNoObject;
1.49 +}
1.50 +
1.51 +
1.52 +function findType(obj)
1.53 +{
1.54 + return cnObjectToString.apply(obj);
1.55 +}
1.56 +
1.57 +
1.58 +// given '[object Number]', return 'Number'
1.59 +function findClass(sType)
1.60 +{
1.61 + var re = /^\[.*\s+(\w+)\s*\]$/;
1.62 + var a = sType.match(re);
1.63 +
1.64 + if (a && a[1])
1.65 + return a[1];
1.66 + return cnNoClass;
1.67 +}
1.68 +
1.69 +
1.70 +function isObject(obj)
1.71 +{
1.72 + return obj instanceof Object;
1.73 +}
1.74 +
