ladybird/Userland/Libraries/LibWeb/Streams/ReadableStreamBYOBRequest.cpp
Timothy Flynn 6656f70387 LibWeb: Use TypedArray as a forward-declaration where appropriate
This reduces the number of files needed to be recompiled when TypedArray
changes from ~1000 to ~600. The remaining ~600 are almost all generated
constructors and prototypes.
2024-02-27 20:02:07 +01:00

81 lines
3.1 KiB
C++

/*
* Copyright (c) 2023, Matthew Olsson <mattco@serenityos.org>
* Copyright (c) 2023, Shannon Booth <shannon@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibJS/Runtime/TypedArray.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/Streams/ReadableByteStreamController.h>
#include <LibWeb/Streams/ReadableStreamBYOBRequest.h>
#include <LibWeb/WebIDL/Buffers.h>
namespace Web::Streams {
JS_DEFINE_ALLOCATOR(ReadableStreamBYOBRequest);
// https://streams.spec.whatwg.org/#rs-byob-request-view
JS::GCPtr<WebIDL::ArrayBufferView> ReadableStreamBYOBRequest::view()
{
// 1. Return this.[[view]].
return m_view;
}
ReadableStreamBYOBRequest::ReadableStreamBYOBRequest(JS::Realm& realm)
: Bindings::PlatformObject(realm)
{
}
void ReadableStreamBYOBRequest::initialize(JS::Realm& realm)
{
Base::initialize(realm);
set_prototype(&Bindings::ensure_web_prototype<Bindings::ReadableStreamBYOBRequestPrototype>(realm, "ReadableStreamBYOBRequest"_fly_string));
}
void ReadableStreamBYOBRequest::visit_edges(Cell::Visitor& visitor)
{
Base::visit_edges(visitor);
visitor.visit(m_controller);
visitor.visit(m_view);
}
// https://streams.spec.whatwg.org/#rs-byob-request-respond
WebIDL::ExceptionOr<void> ReadableStreamBYOBRequest::respond(WebIDL::UnsignedLongLong bytes_written)
{
// 1. If this.[[controller]] is undefined, throw a TypeError exception.
if (!m_controller)
return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, "Controller is undefined"_string };
// 2. If ! IsDetachedBuffer(this.[[view]].[[ArrayBuffer]]) is true, throw a TypeError exception.
if (m_view->viewed_array_buffer()->is_detached())
return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, "Unable to respond to detached ArrayBuffer"_string };
// 3. Assert: this.[[view]].[[ByteLength]] > 0.
VERIFY(m_view->viewed_array_buffer()->byte_length() > 0);
// 4. Assert: this.[[view]].[[ViewedArrayBuffer]].[[ByteLength]] > 0.
VERIFY(m_view->viewed_array_buffer()->byte_length() > 0);
// 5. Perform ? ReadableByteStreamControllerRespond(this.[[controller]], bytesWritten).
return readable_byte_stream_controller_respond(*m_controller, bytes_written);
}
// https://streams.spec.whatwg.org/#rs-byob-request-respond-with-new-view
WebIDL::ExceptionOr<void> ReadableStreamBYOBRequest::respond_with_new_view(JS::Handle<WebIDL::ArrayBufferView> const& view)
{
auto& realm = this->realm();
// 1. If this.[[controller]] is undefined, throw a TypeError exception.
if (!m_controller)
return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, "Controller is undefined"_string };
// 2. If ! IsDetachedBuffer(view.[[ViewedArrayBuffer]]) is true, throw a TypeError exception.
if (view->viewed_array_buffer()->is_detached())
return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, "Unable to respond with a detached ArrayBuffer"_string };
// 3. Return ? ReadableByteStreamControllerRespondWithNewView(this.[[controller]], view).
return TRY(readable_byte_stream_controller_respond_with_new_view(realm, *m_controller, *view));
}
}