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https://github.com/RGBCube/serenity
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LibWeb+LibJS: Make the EventTarget hierarchy (incl. DOM) GC-allocated
This is a monster patch that turns all EventTargets into GC-allocated PlatformObjects. Their C++ wrapper classes are removed, and the LibJS garbage collector is now responsible for their lifetimes. There's a fair amount of hacks and band-aids in this patch, and we'll have a lot of cleanup to do after this.
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445 changed files with 4797 additions and 4268 deletions
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@ -8,7 +8,7 @@
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#include <LibJS/Parser.h>
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#include <LibJS/Runtime/ArrayBuffer.h>
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#include <LibJS/Runtime/FunctionObject.h>
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#include <LibWeb/Bindings/WebSocketWrapper.h>
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#include <LibWeb/Bindings/WebSocketPrototype.h>
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#include <LibWeb/DOM/DOMException.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/DOM/Event.h>
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@ -48,7 +48,7 @@ WebSocketClientSocket::~WebSocketClientSocket() = default;
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WebSocketClientManager::WebSocketClientManager() = default;
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// https://websockets.spec.whatwg.org/#dom-websocket-websocket
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DOM::ExceptionOr<NonnullRefPtr<WebSocket>> WebSocket::create_with_global_object(Bindings::WindowObject& window, String const& url)
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DOM::ExceptionOr<JS::NonnullGCPtr<WebSocket>> WebSocket::create_with_global_object(HTML::Window& window, String const& url)
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{
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AK::URL url_record(url);
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if (!url_record.is_valid())
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@ -59,35 +59,37 @@ DOM::ExceptionOr<NonnullRefPtr<WebSocket>> WebSocket::create_with_global_object(
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return DOM::SyntaxError::create("Presence of URL fragment is invalid");
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// 5. If `protocols` is a string, set `protocols` to a sequence consisting of just that string
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// 6. If any of the values in `protocols` occur more than once or otherwise fail to match the requirements, throw SyntaxError
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return WebSocket::create(window.impl(), url_record);
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return JS::NonnullGCPtr(*window.heap().allocate<WebSocket>(window.realm(), window.impl(), url_record));
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}
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WebSocket::WebSocket(HTML::Window& window, AK::URL& url)
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: EventTarget()
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: EventTarget(window.realm())
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, m_window(window)
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{
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set_prototype(&window.ensure_web_prototype<Bindings::WebSocketPrototype>("WebSocket"));
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// FIXME: Integrate properly with FETCH as per https://fetch.spec.whatwg.org/#websocket-opening-handshake
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auto origin_string = m_window->associated_document().origin().serialize();
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m_websocket = WebSocketClientManager::the().connect(url, origin_string);
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m_websocket->on_open = [weak_this = make_weak_ptr()] {
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m_websocket->on_open = [weak_this = make_weak_ptr<WebSocket>()] {
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if (!weak_this)
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return;
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auto& websocket = const_cast<WebSocket&>(*weak_this);
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websocket.on_open();
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};
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m_websocket->on_message = [weak_this = make_weak_ptr()](auto message) {
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m_websocket->on_message = [weak_this = make_weak_ptr<WebSocket>()](auto message) {
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if (!weak_this)
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return;
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auto& websocket = const_cast<WebSocket&>(*weak_this);
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websocket.on_message(move(message.data), message.is_text);
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};
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m_websocket->on_close = [weak_this = make_weak_ptr()](auto code, auto reason, bool was_clean) {
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m_websocket->on_close = [weak_this = make_weak_ptr<WebSocket>()](auto code, auto reason, bool was_clean) {
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if (!weak_this)
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return;
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auto& websocket = const_cast<WebSocket&>(*weak_this);
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websocket.on_close(code, reason, was_clean);
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};
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m_websocket->on_error = [weak_this = make_weak_ptr()](auto) {
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m_websocket->on_error = [weak_this = make_weak_ptr<WebSocket>()](auto) {
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if (!weak_this)
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return;
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auto& websocket = const_cast<WebSocket&>(*weak_this);
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@ -97,6 +99,12 @@ WebSocket::WebSocket(HTML::Window& window, AK::URL& url)
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WebSocket::~WebSocket() = default;
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void WebSocket::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_window.ptr());
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}
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// https://websockets.spec.whatwg.org/#dom-websocket-readystate
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WebSocket::ReadyState WebSocket::ready_state() const
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{
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@ -172,13 +180,13 @@ void WebSocket::on_open()
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// 1. Change the readyState attribute's value to OPEN (1).
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// 2. Change the extensions attribute's value to the extensions in use, if it is not the null value. [WSP]
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// 3. Change the protocol attribute's value to the subprotocol in use, if it is not the null value. [WSP]
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dispatch_event(*DOM::Event::create(*m_window->wrapper(), HTML::EventNames::open));
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dispatch_event(*DOM::Event::create(*m_window, HTML::EventNames::open));
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}
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// https://websockets.spec.whatwg.org/#feedback-from-the-protocol
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void WebSocket::on_error()
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{
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dispatch_event(*DOM::Event::create(*m_window->wrapper(), HTML::EventNames::error));
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dispatch_event(*DOM::Event::create(*m_window, HTML::EventNames::error));
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}
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// https://websockets.spec.whatwg.org/#feedback-from-the-protocol
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@ -190,7 +198,7 @@ void WebSocket::on_close(u16 code, String reason, bool was_clean)
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event_init.was_clean = was_clean;
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event_init.code = code;
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event_init.reason = move(reason);
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dispatch_event(*HTML::CloseEvent::create(*m_window->wrapper(), HTML::EventNames::close, event_init));
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dispatch_event(*HTML::CloseEvent::create(*m_window, HTML::EventNames::close, event_init));
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}
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// https://websockets.spec.whatwg.org/#feedback-from-the-protocol
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@ -201,9 +209,9 @@ void WebSocket::on_message(ByteBuffer message, bool is_text)
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if (is_text) {
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auto text_message = String(ReadonlyBytes(message));
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HTML::MessageEventInit event_init;
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event_init.data = JS::js_string(wrapper()->vm(), text_message);
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event_init.data = JS::js_string(vm(), text_message);
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event_init.origin = url();
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dispatch_event(*HTML::MessageEvent::create(*m_window->wrapper(), HTML::EventNames::message, event_init));
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dispatch_event(*HTML::MessageEvent::create(*m_window, HTML::EventNames::message, event_init));
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return;
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}
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@ -212,12 +220,10 @@ void WebSocket::on_message(ByteBuffer message, bool is_text)
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TODO();
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} else if (m_binary_type == "arraybuffer") {
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// type indicates that the data is Binary and binaryType is "arraybuffer"
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auto& vm = wrapper()->vm();
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auto& realm = *vm.current_realm();
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HTML::MessageEventInit event_init;
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event_init.data = JS::ArrayBuffer::create(realm, message);
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event_init.data = JS::ArrayBuffer::create(realm(), message);
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event_init.origin = url();
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dispatch_event(*HTML::MessageEvent::create(*m_window->wrapper(), HTML::EventNames::message, event_init));
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dispatch_event(*HTML::MessageEvent::create(*m_window, HTML::EventNames::message, event_init));
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return;
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}
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@ -225,11 +231,6 @@ void WebSocket::on_message(ByteBuffer message, bool is_text)
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TODO();
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}
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JS::Object* WebSocket::create_wrapper(JS::Realm& realm)
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{
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return wrap(realm, *this);
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}
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#undef __ENUMERATE
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#define __ENUMERATE(attribute_name, event_name) \
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void WebSocket::set_##attribute_name(Bindings::CallbackType* value) \
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@ -7,15 +7,13 @@
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#pragma once
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#include <AK/ByteBuffer.h>
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#include <AK/RefCounted.h>
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#include <AK/URL.h>
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#include <AK/Weakable.h>
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#include <LibCore/Object.h>
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#include <LibWeb/Bindings/WindowObject.h>
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#include <LibWeb/Bindings/Wrappable.h>
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#include <LibWeb/Bindings/PlatformObject.h>
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#include <LibWeb/DOM/EventTarget.h>
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#include <LibWeb/DOM/ExceptionOr.h>
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#include <LibWeb/Forward.h>
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#include <LibWeb/HTML/Window.h>
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#define ENUMERATE_WEBSOCKET_EVENT_HANDLERS(E) \
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E(onerror, HTML::EventNames::error) \
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@ -28,11 +26,9 @@ namespace Web::WebSockets {
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class WebSocketClientSocket;
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class WebSocketClientManager;
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class WebSocket final
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: public RefCounted<WebSocket>
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, public Weakable<WebSocket>
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, public DOM::EventTarget
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, public Bindings::Wrappable {
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class WebSocket final : public DOM::EventTarget {
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WEB_PLATFORM_OBJECT(WebSocket, DOM::EventTarget);
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public:
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enum class ReadyState : u16 {
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Connecting = 0,
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Closed = 3,
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};
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using WrapperType = Bindings::WebSocketWrapper;
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static NonnullRefPtr<WebSocket> create(HTML::Window& window, AK::URL& url)
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{
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return adopt_ref(*new WebSocket(window, url));
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}
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static DOM::ExceptionOr<NonnullRefPtr<WebSocket>> create_with_global_object(Bindings::WindowObject& window, String const& url);
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static DOM::ExceptionOr<JS::NonnullGCPtr<WebSocket>> create_with_global_object(HTML::Window&, String const& url);
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virtual ~WebSocket() override;
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using RefCounted::ref;
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using RefCounted::unref;
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String url() const { return m_url.to_string(); }
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#undef __ENUMERATE
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DOM::ExceptionOr<void> send(String const& data);
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private:
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virtual void ref_event_target() override { ref(); }
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virtual void unref_event_target() override { unref(); }
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virtual JS::Object* create_wrapper(JS::Realm&) override;
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void on_open();
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void on_message(ByteBuffer message, bool is_text);
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void on_error();
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explicit WebSocket(HTML::Window&, AK::URL&);
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NonnullRefPtr<HTML::Window> m_window;
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virtual void visit_edges(Cell::Visitor&) override;
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JS::NonnullGCPtr<HTML::Window> m_window;
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AK::URL m_url;
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String m_binary_type { "blob" };
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};
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}
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WRAPPER_HACK(WebSocket, Web::WebSockets)
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