c7fec9424c
This is (part of) a normative change in the ECMA-262 spec. See: https://github.com/tc39/ecma262/commit/a9ae96e
49 lines
1.5 KiB
C++
49 lines
1.5 KiB
C++
/*
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* Copyright (c) 2021, Idan Horowitz <idan.horowitz@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 <LibJS/Runtime/ArrayBuffer.h>
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#include <LibJS/Runtime/ByteLength.h>
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#include <LibJS/Runtime/GlobalObject.h>
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#include <LibJS/Runtime/Object.h>
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namespace JS {
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class DataView : public Object {
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JS_OBJECT(DataView, Object);
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JS_DECLARE_ALLOCATOR(DataView);
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public:
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static NonnullGCPtr<DataView> create(Realm&, ArrayBuffer*, ByteLength byte_length, size_t byte_offset);
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virtual ~DataView() override = default;
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ArrayBuffer* viewed_array_buffer() const { return m_viewed_array_buffer; }
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ByteLength const& byte_length() const { return m_byte_length; }
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size_t byte_offset() const { return m_byte_offset; }
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private:
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DataView(ArrayBuffer*, ByteLength byte_length, size_t byte_offset, Object& prototype);
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virtual void visit_edges(Visitor& visitor) override;
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GCPtr<ArrayBuffer> m_viewed_array_buffer;
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ByteLength m_byte_length { 0 };
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size_t m_byte_offset { 0 };
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};
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// 25.3.1.1 DataView With Buffer Witness Records, https://tc39.es/ecma262/#sec-dataview-with-buffer-witness-records
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struct DataViewWithBufferWitness {
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NonnullGCPtr<DataView const> object; // [[Object]]
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ByteLength cached_buffer_byte_length; // [[CachedBufferByteLength]]
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};
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DataViewWithBufferWitness make_data_view_with_buffer_witness_record(DataView const&, ArrayBuffer::Order);
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u32 get_view_byte_length(DataViewWithBufferWitness const&);
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bool is_view_out_of_bounds(DataViewWithBufferWitness const&);
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}
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