| // Copyright (C) 2016 the V8 project authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| /*--- |
| esid: sec-typedarray-object |
| description: > |
| Use prototype from %TypedArray% if newTarget's prototype is not an Object |
| info: | |
| 22.2.4.4 TypedArray ( object ) |
| |
| This description applies only if the TypedArray function is called with at |
| least one argument and the Type of the first argument is Object and that |
| object does not have either a [[TypedArrayName]] or an [[ArrayBufferData]] |
| internal slot. |
| |
| ... |
| 3. Let O be ? AllocateTypedArray(TypedArray.[[TypedArrayConstructorName]], |
| NewTarget, "%TypedArrayPrototype%"). |
| ... |
| |
| 22.2.4.2.1 Runtime Semantics: AllocateTypedArray (constructorName, newTarget, |
| defaultProto [ , length ]) |
| |
| 1. Let proto be ? GetPrototypeFromConstructor(newTarget, defaultProto). |
| 2. Let obj be IntegerIndexedObjectCreate (proto, «[[ViewedArrayBuffer]], |
| [[TypedArrayName]], [[ByteLength]], [[ByteOffset]], [[ArrayLength]]» ). |
| ... |
| |
| 9.4.5.7 IntegerIndexedObjectCreate (prototype, internalSlotsList) |
| |
| ... |
| 10. Set the [[Prototype]] internal slot of A to prototype. |
| ... |
| 12. Return A. |
| includes: [testTypedArray.js] |
| features: [TypedArray] |
| ---*/ |
| |
| function newTarget() {} |
| newTarget.prototype = null; |
| var o = []; |
| |
| testWithTypedArrayConstructors(function(TA) { |
| var ta = Reflect.construct(TA, [o], newTarget); |
| |
| assert.sameValue(ta.constructor, TA); |
| assert.sameValue(Object.getPrototypeOf(ta), TA.prototype); |
| }); |