| | |
| | | 'use strict'; |
| | | var PROPER_FUNCTION_NAME = require('../internals/function-name').PROPER; |
| | | var redefine = require('../internals/redefine'); |
| | | var defineBuiltIn = require('../internals/define-built-in'); |
| | | var anObject = require('../internals/an-object'); |
| | | var $toString = require('../internals/to-string'); |
| | | var fails = require('../internals/fails'); |
| | | var flags = require('../internals/regexp-flags'); |
| | | var getRegExpFlags = require('../internals/regexp-get-flags'); |
| | | |
| | | var TO_STRING = 'toString'; |
| | | var RegExpPrototype = RegExp.prototype; |
| | | var nativeToString = RegExpPrototype[TO_STRING]; |
| | | var n$ToString = RegExpPrototype[TO_STRING]; |
| | | |
| | | var NOT_GENERIC = fails(function () { return nativeToString.call({ source: 'a', flags: 'b' }) != '/a/b'; }); |
| | | var NOT_GENERIC = fails(function () { return n$ToString.call({ source: 'a', flags: 'b' }) != '/a/b'; }); |
| | | // FF44- RegExp#toString has a wrong name |
| | | var INCORRECT_NAME = PROPER_FUNCTION_NAME && nativeToString.name != TO_STRING; |
| | | var INCORRECT_NAME = PROPER_FUNCTION_NAME && n$ToString.name != TO_STRING; |
| | | |
| | | // `RegExp.prototype.toString` method |
| | | // https://tc39.es/ecma262/#sec-regexp.prototype.tostring |
| | | if (NOT_GENERIC || INCORRECT_NAME) { |
| | | redefine(RegExp.prototype, TO_STRING, function toString() { |
| | | defineBuiltIn(RegExp.prototype, TO_STRING, function toString() { |
| | | var R = anObject(this); |
| | | var p = $toString(R.source); |
| | | var rf = R.flags; |
| | | var f = $toString(rf === undefined && R instanceof RegExp && !('flags' in RegExpPrototype) ? flags.call(R) : rf); |
| | | return '/' + p + '/' + f; |
| | | var pattern = $toString(R.source); |
| | | var flags = $toString(getRegExpFlags(R)); |
| | | return '/' + pattern + '/' + flags; |
| | | }, { unsafe: true }); |
| | | } |