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44 lines
1.6 KiB
44 lines
1.6 KiB
var global = require('./_global');
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var inheritIfRequired = require('./_inherit-if-required');
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var dP = require('./_object-dp').f;
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var gOPN = require('./_object-gopn').f;
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var isRegExp = require('./_is-regexp');
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var $flags = require('./_flags');
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var $RegExp = global.RegExp;
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var Base = $RegExp;
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var proto = $RegExp.prototype;
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var re1 = /a/g;
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var re2 = /a/g;
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// "new" creates a new object, old webkit buggy here
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var CORRECT_NEW = new $RegExp(re1) !== re1;
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if (require('./_descriptors') && (!CORRECT_NEW || require('./_fails')(function () {
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re2[require('./_wks')('match')] = false;
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// RegExp constructor can alter flags and IsRegExp works correct with @@match
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return $RegExp(re1) != re1 || $RegExp(re2) == re2 || $RegExp(re1, 'i') != '/a/i';
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}))) {
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$RegExp = function RegExp(p, f) {
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var tiRE = this instanceof $RegExp;
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var piRE = isRegExp(p);
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var fiU = f === undefined;
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return !tiRE && piRE && p.constructor === $RegExp && fiU ? p
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: inheritIfRequired(CORRECT_NEW
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? new Base(piRE && !fiU ? p.source : p, f)
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: Base((piRE = p instanceof $RegExp) ? p.source : p, piRE && fiU ? $flags.call(p) : f)
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, tiRE ? this : proto, $RegExp);
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};
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var proxy = function (key) {
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key in $RegExp || dP($RegExp, key, {
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configurable: true,
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get: function () { return Base[key]; },
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set: function (it) { Base[key] = it; }
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});
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};
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for (var keys = gOPN(Base), i = 0; keys.length > i;) proxy(keys[i++]);
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proto.constructor = $RegExp;
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$RegExp.prototype = proto;
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require('./_redefine')(global, 'RegExp', $RegExp);
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}
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require('./_set-species')('RegExp');
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