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https://github.com/RGBCube/serenity
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LibJS+LibWeb: Implement resizable ArrayBuffer support for DataView
This is (part of) a normative change in the ECMA-262 spec. See:
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12 changed files with 377 additions and 94 deletions
47
Userland/Libraries/LibJS/Runtime/ByteLength.h
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47
Userland/Libraries/LibJS/Runtime/ByteLength.h
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/*
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* Copyright (c) 2023, Tim Flynn <trflynn89@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Types.h>
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#include <AK/Variant.h>
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namespace JS {
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class ByteLength {
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public:
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static ByteLength auto_() { return { Auto {} }; }
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static ByteLength detached() { return { Detached {} }; }
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ByteLength(u32 length)
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: m_length(length)
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{
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}
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bool is_auto() const { return m_length.has<Auto>(); }
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bool is_detached() const { return m_length.has<Detached>(); }
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u32 length() const
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{
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VERIFY(m_length.has<u32>());
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return m_length.get<u32>();
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}
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private:
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struct Auto { };
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struct Detached { };
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using Length = Variant<Auto, Detached, u32>;
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ByteLength(Length length)
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: m_length(move(length))
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{
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}
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Length m_length;
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};
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}
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