js/src/builtin/Number.js@6474c204b198 (annotated)
js/src/builtin/Number.js
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| 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 | |
| michael@0 | 5 | /*global intl_NumberFormat: false, */ |
| michael@0 | 6 | |
| michael@0 | 7 | |
| michael@0 | 8 | var numberFormatCache = new Record(); |
| michael@0 | 9 | |
| michael@0 | 10 | |
| michael@0 | 11 | /** |
| michael@0 | 12 | * Format this Number object into a string, using the locale and formatting options |
| michael@0 | 13 | * provided. |
| michael@0 | 14 | * |
| michael@0 | 15 | * Spec: ECMAScript Language Specification, 5.1 edition, 15.7.4.3. |
| michael@0 | 16 | * Spec: ECMAScript Internationalization API Specification, 13.2.1. |
| michael@0 | 17 | */ |
| michael@0 | 18 | function Number_toLocaleString() { |
| michael@0 | 19 | // Steps 1-2. Note that valueOf enforces "this Number value" restrictions. |
| michael@0 | 20 | var x = callFunction(std_Number_valueOf, this); |
| michael@0 | 21 | |
| michael@0 | 22 | // Steps 2-3. |
| michael@0 | 23 | var locales = arguments.length > 0 ? arguments[0] : undefined; |
| michael@0 | 24 | var options = arguments.length > 1 ? arguments[1] : undefined; |
| michael@0 | 25 | |
| michael@0 | 26 | // Step 4. |
| michael@0 | 27 | var numberFormat; |
| michael@0 | 28 | if (locales === undefined && options === undefined) { |
| michael@0 | 29 | // This cache only optimizes for the old ES5 toLocaleString without |
| michael@0 | 30 | // locales and options. |
| michael@0 | 31 | if (numberFormatCache.numberFormat === undefined) |
| michael@0 | 32 | numberFormatCache.numberFormat = intl_NumberFormat(locales, options); |
| michael@0 | 33 | numberFormat = numberFormatCache.numberFormat; |
| michael@0 | 34 | } else { |
| michael@0 | 35 | numberFormat = intl_NumberFormat(locales, options); |
| michael@0 | 36 | } |
| michael@0 | 37 | |
| michael@0 | 38 | // Step 5. |
| michael@0 | 39 | return intl_FormatNumber(numberFormat, x); |
| michael@0 | 40 | } |
