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GlobalOperations.js
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45 lines (42 loc) · 1.94 KB
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/*
* Copyright (C) 2016 Yusuke Suzuki <utatane.tea@gmail.com>.
* Copyright (C) 2017 Caio Lima <ticaiolima@gmail.com>.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
// @internal
@linkTimeConstant
function speciesConstructor(obj, defaultConstructor)
{
"use strict";
var constructor = obj.constructor;
if (constructor === @undefined)
return defaultConstructor;
if (!@isObject(constructor))
@throwTypeError("|this|.constructor is not an Object or undefined");
constructor = constructor.@@species;
if (@isUndefinedOrNull(constructor))
return defaultConstructor;
if (@isConstructor(constructor))
return constructor;
@throwTypeError("|this|.constructor[Symbol.species] is not a constructor");
}