ladybird/Userland/Libraries/LibWeb/Streams/ReadableStream.cpp
Linus Groh ad04d7ac9b LibWeb: Move ExceptionOr from DOM/ to WebIDL/
This is a concept fully defined in the Web IDL spec and doesn't belong
in the DOM directory/namespace - not even DOMException, despite the name
:^)
2022-09-25 19:13:31 +01:00

71 lines
2 KiB
C++

/*
* Copyright (c) 2022, Linus Groh <linusg@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/HTML/Window.h>
#include <LibWeb/Streams/AbstractOperations.h>
#include <LibWeb/Streams/ReadableStream.h>
namespace Web::Streams {
// https://streams.spec.whatwg.org/#rs-constructor
WebIDL::ExceptionOr<JS::NonnullGCPtr<ReadableStream>> ReadableStream::create_with_global_object(HTML::Window& window)
{
auto* readable_stream = window.heap().allocate<ReadableStream>(window.realm(), window);
return JS::NonnullGCPtr { *readable_stream };
}
ReadableStream::ReadableStream(HTML::Window& window)
: PlatformObject(window.realm())
{
set_prototype(&window.cached_web_prototype("ReadableStream"));
}
ReadableStream::~ReadableStream() = default;
void ReadableStream::visit_edges(Cell::Visitor& visitor)
{
Base::visit_edges(visitor);
visitor.visit(m_controller);
visitor.visit(m_reader);
visitor.visit(m_stored_error);
}
// https://streams.spec.whatwg.org/#readablestream-locked
bool ReadableStream::is_readable() const
{
// A ReadableStream stream is readable if stream.[[state]] is "readable".
return m_state == State::Readable;
}
// https://streams.spec.whatwg.org/#readablestream-closed
bool ReadableStream::is_closed() const
{
// A ReadableStream stream is closed if stream.[[state]] is "closed".
return m_state == State::Closed;
}
// https://streams.spec.whatwg.org/#readablestream-errored
bool ReadableStream::is_errored() const
{
// A ReadableStream stream is errored if stream.[[state]] is "errored".
return m_state == State::Errored;
}
// https://streams.spec.whatwg.org/#readablestream-locked
bool ReadableStream::is_locked() const
{
// A ReadableStream stream is locked if ! IsReadableStreamLocked(stream) returns true.
return is_readable_stream_locked(*this);
}
// https://streams.spec.whatwg.org/#is-readable-stream-disturbed
bool ReadableStream::is_disturbed() const
{
// A ReadableStream stream is disturbed if stream.[[disturbed]] is true.
return m_disturbed;
}
}