es7.string.match-all.js 1.0 KB

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  1. 'use strict';
  2. // https://tc39.github.io/String.prototype.matchAll/
  3. var $export = require('./_export');
  4. var defined = require('./_defined');
  5. var toLength = require('./_to-length');
  6. var isRegExp = require('./_is-regexp');
  7. var getFlags = require('./_flags');
  8. var RegExpProto = RegExp.prototype;
  9. var $RegExpStringIterator = function (regexp, string) {
  10. this._r = regexp;
  11. this._s = string;
  12. };
  13. require('./_iter-create')($RegExpStringIterator, 'RegExp String', function next() {
  14. var match = this._r.exec(this._s);
  15. return { value: match, done: match === null };
  16. });
  17. $export($export.P, 'String', {
  18. matchAll: function matchAll(regexp) {
  19. defined(this);
  20. if (!isRegExp(regexp)) throw TypeError(regexp + ' is not a regexp!');
  21. var S = String(this);
  22. var flags = 'flags' in RegExpProto ? String(regexp.flags) : getFlags.call(regexp);
  23. var rx = new RegExp(regexp.source, ~flags.indexOf('g') ? flags : 'g' + flags);
  24. rx.lastIndex = toLength(regexp.lastIndex);
  25. return new $RegExpStringIterator(rx, S);
  26. }
  27. });