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31 lines
1.0 KiB
JavaScript
31 lines
1.0 KiB
JavaScript
5 years ago
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'use strict';
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// https://tc39.github.io/String.prototype.matchAll/
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var $export = require('./_export');
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var defined = require('./_defined');
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var toLength = require('./_to-length');
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var isRegExp = require('./_is-regexp');
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var getFlags = require('./_flags');
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var RegExpProto = RegExp.prototype;
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var $RegExpStringIterator = function (regexp, string) {
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this._r = regexp;
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this._s = string;
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};
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require('./_iter-create')($RegExpStringIterator, 'RegExp String', function next() {
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var match = this._r.exec(this._s);
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return { value: match, done: match === null };
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});
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$export($export.P, 'String', {
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matchAll: function matchAll(regexp) {
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defined(this);
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if (!isRegExp(regexp)) throw TypeError(regexp + ' is not a regexp!');
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var S = String(this);
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var flags = 'flags' in RegExpProto ? String(regexp.flags) : getFlags.call(regexp);
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var rx = new RegExp(regexp.source, ~flags.indexOf('g') ? flags : 'g' + flags);
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rx.lastIndex = toLength(regexp.lastIndex);
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return new $RegExpStringIterator(rx, S);
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}
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});
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