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LibJS: Accept ArrayBuffer constructor options argument

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Test262 seems to test the changes in the "Resizable ArrayBuffer and
growable SharedArrayBuffer" proposal. Begin implementing this proposal
by accepting the new options object argument to the ArrayBuffer
constructor.

https://tc39.es/proposal-resizablearraybuffer
https://github.com/tc39/test262/blob/main/test/built-ins/ArrayBuffer/options-maxbytelength-diminuitive.js
This commit is contained in:
ForLoveOfCats 2022-03-02 11:44:32 -05:00 • committed by Linus Groh
parent 4eb2c70a03
commit e8416b603f
5 changed files with 54 additions and 5 deletions
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5
Userland/Libraries/LibJS/Runtime/ArrayBuffer.cpp
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@ -1,5 +1,6 @@
/*
* Copyright (c) 2020-2021, Linus Groh <linusg@serenityos.org>
* Copyright (c) 2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -54,8 +55,10 @@ void ArrayBuffer::visit_edges(Cell::Visitor& visitor)
}
// 25.1.2.1 AllocateArrayBuffer ( constructor, byteLength ), https://tc39.es/ecma262/#sec-allocatearraybuffer
ThrowCompletionOr<ArrayBuffer*> allocate_array_buffer(GlobalObject& global_object, FunctionObject& constructor, size_t byte_length)
// 1.1.2 AllocateArrayBuffer ( constructor, byteLength [, maxByteLength ] ), https://tc39.es/proposal-resizablearraybuffer/#sec-allocatearraybuffer
ThrowCompletionOr<ArrayBuffer*> allocate_array_buffer(GlobalObject& global_object, FunctionObject& constructor, size_t byte_length, Optional<size_t> max_byte_length)
{
(void)max_byte_length;
// 1. Let obj be ? OrdinaryCreateFromConstructor(constructor, "%ArrayBuffer.prototype%", « [[ArrayBufferData]], [[ArrayBufferByteLength]], [[ArrayBufferDetachKey]] »).
auto* obj = TRY(ordinary_create_from_constructor<ArrayBuffer>(global_object, constructor, &GlobalObject::array_buffer_prototype, nullptr));