/src/serenity/Userland/Libraries/LibWeb/WebIDL/Buffers.cpp

Source
/*
 * Copyright (c) 2023, Shannon Booth <shannon@serenityos.org>
 * Copyright (c) 2023, Matthew Olsson <mattco@serenityos.org>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#include <LibJS/Runtime/DataView.h>
#include <LibJS/Runtime/TypedArray.h>
#include <LibWeb/WebIDL/Buffers.h>

namespace Web::WebIDL {

JS_DEFINE_ALLOCATOR(BufferableObjectBase);
JS_DEFINE_ALLOCATOR(ArrayBufferView);
JS_DEFINE_ALLOCATOR(BufferSource);

u32 BufferableObjectBase::byte_length() const
{
    return m_bufferable_object.visit(
        [](JS::NonnullGCPtr<JS::TypedArrayBase> typed_array) {
            auto typed_array_record = JS::make_typed_array_with_buffer_witness_record(typed_array, JS::ArrayBuffer::Order::SeqCst);
            return JS::typed_array_byte_length(typed_array_record);
        },
        [](JS::NonnullGCPtr<JS::DataView> data_view) {
            auto view_record = JS::make_data_view_with_buffer_witness_record(data_view, JS::ArrayBuffer::Order::SeqCst);
            return JS::get_view_byte_length(view_record);
        },
        [](JS::NonnullGCPtr<JS::ArrayBuffer> array_buffer) { return static_cast<u32>(array_buffer->byte_length()); });
}

JS::NonnullGCPtr<JS::Object> BufferableObjectBase::raw_object()
{
    return m_bufferable_object.visit([](auto const& obj) -> JS::NonnullGCPtr<JS::Object> { return obj; });
}

JS::GCPtr<JS::ArrayBuffer> BufferableObjectBase::viewed_array_buffer()
{
    return m_bufferable_object.visit(
        [](JS::NonnullGCPtr<JS::ArrayBuffer> array_buffer) -> JS::GCPtr<JS::ArrayBuffer> { return array_buffer; },
        [](auto const& view) -> JS::GCPtr<JS::ArrayBuffer> { return view->viewed_array_buffer(); });
}

BufferableObject BufferableObjectBase::bufferable_object_from_raw_object(JS::NonnullGCPtr<JS::Object> object)
{
    if (is<JS::TypedArrayBase>(*object))
        return JS::NonnullGCPtr { static_cast<JS::TypedArrayBase&>(*object) };

    if (is<JS::DataView>(*object))
        return JS::NonnullGCPtr { static_cast<JS::DataView&>(*object) };

    if (is<JS::ArrayBuffer>(*object))
        return JS::NonnullGCPtr { static_cast<JS::ArrayBuffer&>(*object) };

    VERIFY_NOT_REACHED();
}

BufferableObjectBase::BufferableObjectBase(JS::NonnullGCPtr<JS::Object> object)
    : m_bufferable_object(bufferable_object_from_raw_object(object))
{
}

bool BufferableObjectBase::is_typed_array_base() const
{
    return m_bufferable_object.has<JS::NonnullGCPtr<JS::TypedArrayBase>>();
}

bool BufferableObjectBase::is_data_view() const
{
    return m_bufferable_object.has<JS::NonnullGCPtr<JS::DataView>>();
}

bool BufferableObjectBase::is_array_buffer() const
{
    return m_bufferable_object.has<JS::NonnullGCPtr<JS::ArrayBuffer>>();
}

void BufferableObjectBase::visit_edges(Visitor& visitor)
{
    Base::visit_edges(visitor);
    m_bufferable_object.visit([&](auto& obj) { visitor.visit(obj); });
}

ArrayBufferView::~ArrayBufferView() = default;

u32 ArrayBufferView::byte_offset() const
{
    return m_bufferable_object.visit(
        [](JS::NonnullGCPtr<JS::ArrayBuffer>) -> u32 { VERIFY_NOT_REACHED(); },
        [](auto& view) -> u32 { return static_cast<u32>(view->byte_offset()); });
}

BufferSource::~BufferSource() = default;

}

Line	Count	Source
1		/*
2		* Copyright (c) 2023, Shannon Booth <shannon@serenityos.org>
3		* Copyright (c) 2023, Matthew Olsson <mattco@serenityos.org>
4		*
5		* SPDX-License-Identifier: BSD-2-Clause
6		*/
7
8		#include <LibJS/Runtime/DataView.h>
9		#include <LibJS/Runtime/TypedArray.h>
10		#include <LibWeb/WebIDL/Buffers.h>
11
12		namespace Web::WebIDL {
13
14		JS_DEFINE_ALLOCATOR(BufferableObjectBase);
15		JS_DEFINE_ALLOCATOR(ArrayBufferView);
16		JS_DEFINE_ALLOCATOR(BufferSource);
17
18		u32 BufferableObjectBase::byte_length() const
19	0	{
20	0	return m_bufferable_object.visit(
21	0	[](JS::NonnullGCPtr<JS::TypedArrayBase> typed_array) {
22	0	auto typed_array_record = JS::make_typed_array_with_buffer_witness_record(typed_array, JS::ArrayBuffer::Order::SeqCst);
23	0	return JS::typed_array_byte_length(typed_array_record);
24	0	},
25	0	[](JS::NonnullGCPtr<JS::DataView> data_view) {
26	0	auto view_record = JS::make_data_view_with_buffer_witness_record(data_view, JS::ArrayBuffer::Order::SeqCst);
27	0	return JS::get_view_byte_length(view_record);
28	0	},
29	0	[](JS::NonnullGCPtr<JS::ArrayBuffer> array_buffer) { return static_cast<u32>(array_buffer->byte_length()); });
30	0	}
31
32		JS::NonnullGCPtr<JS::Object> BufferableObjectBase::raw_object()
33	0	{
34	0	return m_bufferable_object.visit([](auto const& obj) -> JS::NonnullGCPtr<JS::Object> { return obj; }); Unexecuted instantiation: Buffers.cpp:JS::NonnullGCPtr<JS::Object> Web::WebIDL::BufferableObjectBase::raw_object()::$_0::operator()<JS::NonnullGCPtr<JS::TypedArrayBase> >(JS::NonnullGCPtr<JS::TypedArrayBase> const&) const Unexecuted instantiation: Buffers.cpp:JS::NonnullGCPtr<JS::Object> Web::WebIDL::BufferableObjectBase::raw_object()::$_0::operator()<JS::NonnullGCPtr<JS::DataView> >(JS::NonnullGCPtr<JS::DataView> const&) const Unexecuted instantiation: Buffers.cpp:JS::NonnullGCPtr<JS::Object> Web::WebIDL::BufferableObjectBase::raw_object()::$_0::operator()<JS::NonnullGCPtr<JS::ArrayBuffer> >(JS::NonnullGCPtr<JS::ArrayBuffer> const&) const
35	0	}
36
37		JS::GCPtr<JS::ArrayBuffer> BufferableObjectBase::viewed_array_buffer()
38	0	{
39	0	return m_bufferable_object.visit(
40	0	[](JS::NonnullGCPtr<JS::ArrayBuffer> array_buffer) -> JS::GCPtr<JS::ArrayBuffer> { return array_buffer; },
41	0	[](auto const& view) -> JS::GCPtr<JS::ArrayBuffer> { return view->viewed_array_buffer(); }); Unexecuted instantiation: Buffers.cpp:JS::GCPtr<JS::ArrayBuffer> Web::WebIDL::BufferableObjectBase::viewed_array_buffer()::$_1::operator()<JS::NonnullGCPtr<JS::TypedArrayBase> >(JS::NonnullGCPtr<JS::TypedArrayBase> const&) const Unexecuted instantiation: Buffers.cpp:JS::GCPtr<JS::ArrayBuffer> Web::WebIDL::BufferableObjectBase::viewed_array_buffer()::$_1::operator()<JS::NonnullGCPtr<JS::DataView> >(JS::NonnullGCPtr<JS::DataView> const&) const
42	0	}
43
44		BufferableObject BufferableObjectBase::bufferable_object_from_raw_object(JS::NonnullGCPtr<JS::Object> object)
45	0	{
46	0	if (is<JS::TypedArrayBase>(*object))
47	0	return JS::NonnullGCPtr { static_cast<JS::TypedArrayBase&>(*object) };
48
49	0	if (is<JS::DataView>(*object))
50	0	return JS::NonnullGCPtr { static_cast<JS::DataView&>(*object) };
51
52	0	if (is<JS::ArrayBuffer>(*object))
53	0	return JS::NonnullGCPtr { static_cast<JS::ArrayBuffer&>(*object) };
54
55	0	VERIFY_NOT_REACHED();
56	0	}
57
58		BufferableObjectBase::BufferableObjectBase(JS::NonnullGCPtr<JS::Object> object)
59	0	: m_bufferable_object(bufferable_object_from_raw_object(object))
60	0	{
61	0	}
62
63		bool BufferableObjectBase::is_typed_array_base() const
64	0	{
65	0	return m_bufferable_object.has<JS::NonnullGCPtr<JS::TypedArrayBase>>();
66	0	}
67
68		bool BufferableObjectBase::is_data_view() const
69	0	{
70	0	return m_bufferable_object.has<JS::NonnullGCPtr<JS::DataView>>();
71	0	}
72
73		bool BufferableObjectBase::is_array_buffer() const
74	0	{
75	0	return m_bufferable_object.has<JS::NonnullGCPtr<JS::ArrayBuffer>>();
76	0	}
77
78		void BufferableObjectBase::visit_edges(Visitor& visitor)
79	0	{
80	0	Base::visit_edges(visitor);
81	0	m_bufferable_object.visit([&](auto& obj) { visitor.visit(obj); }); Unexecuted instantiation: Buffers.cpp:auto Web::WebIDL::BufferableObjectBase::visit_edges(JS::Cell::Visitor&)::$_0::operator()<JS::NonnullGCPtr<JS::TypedArrayBase> >(JS::NonnullGCPtr<JS::TypedArrayBase>&) const Unexecuted instantiation: Buffers.cpp:auto Web::WebIDL::BufferableObjectBase::visit_edges(JS::Cell::Visitor&)::$_0::operator()<JS::NonnullGCPtr<JS::DataView> >(JS::NonnullGCPtr<JS::DataView>&) const Unexecuted instantiation: Buffers.cpp:auto Web::WebIDL::BufferableObjectBase::visit_edges(JS::Cell::Visitor&)::$_0::operator()<JS::NonnullGCPtr<JS::ArrayBuffer> >(JS::NonnullGCPtr<JS::ArrayBuffer>&) const
82	0	}
83
84	0	ArrayBufferView::~ArrayBufferView() = default;
85
86		u32 ArrayBufferView::byte_offset() const
87	0	{
88	0	return m_bufferable_object.visit(
89	0	[](JS::NonnullGCPtr<JS::ArrayBuffer>) -> u32 { VERIFY_NOT_REACHED(); },
90	0	[](auto& view) -> u32 { return static_cast<u32>(view->byte_offset()); }); Unexecuted instantiation: Buffers.cpp:unsigned int Web::WebIDL::ArrayBufferView::byte_offset() const::$_1::operator()<JS::NonnullGCPtr<JS::TypedArrayBase> const>(JS::NonnullGCPtr<JS::TypedArrayBase> const&) const Unexecuted instantiation: Buffers.cpp:unsigned int Web::WebIDL::ArrayBufferView::byte_offset() const::$_1::operator()<JS::NonnullGCPtr<JS::DataView> const>(JS::NonnullGCPtr<JS::DataView> const&) const
91	0	}
92
93	0	BufferSource::~BufferSource() = default;
94
95		}

Coverage Report

Created: 2026-02-14 08:01