1 | // Copyright 2009 The Closure Library Authors. All Rights Reserved. |
2 | // |
3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
4 | // you may not use this file except in compliance with the License. |
5 | // You may obtain a copy of the License at |
6 | // |
7 | // http://www.apache.org/licenses/LICENSE-2.0 |
8 | // |
9 | // Unless required by applicable law or agreed to in writing, software |
10 | // distributed under the License is distributed on an "AS-IS" BASIS, |
11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
12 | // See the License for the specific language governing permissions and |
13 | // limitations under the License. |
14 | |
15 | /** |
16 | * @fileoverview Provides a base class for custom Error objects such that the |
17 | * stack is correctly maintained. |
18 | * |
19 | * You should never need to throw goog.debug.Error(msg) directly, Error(msg) is |
20 | * sufficient. |
21 | * |
22 | */ |
23 | |
24 | goog.provide('goog.debug.Error'); |
25 | |
26 | |
27 | |
28 | /** |
29 | * Base class for custom error objects. |
30 | * @param {*=} opt_msg The message associated with the error. |
31 | * @constructor |
32 | * @extends {Error} |
33 | */ |
34 | goog.debug.Error = function(opt_msg) { |
35 | |
36 | // Ensure there is a stack trace. |
37 | if (Error.captureStackTrace) { |
38 | Error.captureStackTrace(this, goog.debug.Error); |
39 | } else { |
40 | this.stack = new Error().stack || ''; |
41 | } |
42 | |
43 | if (opt_msg) { |
44 | this.message = String(opt_msg); |
45 | } |
46 | }; |
47 | goog.inherits(goog.debug.Error, Error); |
48 | |
49 | |
50 | /** @override */ |
51 | goog.debug.Error.prototype.name = 'CustomError'; |