addon-sdk/source/lib/sdk/ui/id.js@b8a032363ba2 (annotated)
addon-sdk/source/lib/sdk/ui/id.js
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 3 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 4 | 'use strict'; |
| michael@0 | 5 | |
| michael@0 | 6 | module.metadata = { |
| michael@0 | 7 | 'stability': 'experimental' |
| michael@0 | 8 | }; |
| michael@0 | 9 | |
| michael@0 | 10 | const method = require('../../method/core'); |
| michael@0 | 11 | const { uuid } = require('../util/uuid'); |
| michael@0 | 12 | |
| michael@0 | 13 | // NOTE: use lang/functional memoize when it is updated to use WeakMap |
| michael@0 | 14 | function memoize(f) { |
| michael@0 | 15 | const memo = new WeakMap(); |
| michael@0 | 16 | |
| michael@0 | 17 | return function memoizer(o) { |
| michael@0 | 18 | let key = o; |
| michael@0 | 19 | if (!memo.has(key)) |
| michael@0 | 20 | memo.set(key, f.apply(this, arguments)); |
| michael@0 | 21 | return memo.get(key); |
| michael@0 | 22 | }; |
| michael@0 | 23 | } |
| michael@0 | 24 | |
| michael@0 | 25 | let identify = method('identify'); |
| michael@0 | 26 | identify.define(Object, memoize(function() { return uuid(); })); |
| michael@0 | 27 | exports.identify = identify; |
