ladybird/Userland/Libraries/LibJS/Runtime/DataView.cpp
Linus Groh b84f8fb55b LibJS: Make intrinsics getters return NonnullGCPtr
Some of these are allocated upon initialization of the intrinsics, and
some lazily, but in neither case the getters actually return a nullptr.

This saves us a whole bunch of pointer dereferences (as NonnullGCPtr has
an `operator T&()`), and also has the interesting side effect of forcing
us to explicitly use the FunctionObject& overload of call(), as passing
a NonnullGCPtr is ambigous - it could implicitly be turned into a Value
_or_ a FunctionObject& (so we have to dereference manually).
2023-04-13 14:29:42 +02:00

30 lines
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C++

/*
* Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibJS/Runtime/DataView.h>
namespace JS {
NonnullGCPtr<DataView> DataView::create(Realm& realm, ArrayBuffer* viewed_buffer, size_t byte_length, size_t byte_offset)
{
return realm.heap().allocate<DataView>(realm, viewed_buffer, byte_length, byte_offset, realm.intrinsics().data_view_prototype()).release_allocated_value_but_fixme_should_propagate_errors();
}
DataView::DataView(ArrayBuffer* viewed_buffer, size_t byte_length, size_t byte_offset, Object& prototype)
: Object(ConstructWithPrototypeTag::Tag, prototype)
, m_viewed_array_buffer(viewed_buffer)
, m_byte_length(byte_length)
, m_byte_offset(byte_offset)
{
}
void DataView::visit_edges(Visitor& visitor)
{
Base::visit_edges(visitor);
visitor.visit(m_viewed_array_buffer);
}
}