| /* This Source Code Form is subject to the terms of the Mozilla Public |
| * License, v. 2.0. If a copy of the MPL was not distributed with this |
| * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| |
| |
| if (typeof isHighSurrogate === 'undefined') { |
| var isHighSurrogate = function isHighSurrogate(s) { |
| var c = s.charCodeAt(0); |
| return c >= 0xD800 && c <= 0xDBFF; |
| } |
| } |
| |
| if (typeof isLowSurrogate === 'undefined') { |
| var isLowSurrogate = function isLowSurrogate(s) { |
| var c = s.charCodeAt(0); |
| return c >= 0xDC00 && c <= 0xDFFF; |
| } |
| } |
| |
| if (typeof isSurrogatePair === 'undefined') { |
| var isSurrogatePair = function isSurrogatePair(s) { |
| return s.length == 2 && isHighSurrogate(s[0]) && isLowSurrogate(s[1]); |
| } |
| } |
