Everywhere: Hoist the Libraries folder to the top-level

Author: https://github.com/trflynn89
Commit: 93712b24bf
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2256
Reviewed-by: https://github.com/sideshowbarker

Libraries/LibWeb/Streams/WritableStreamDefaultWriter.cpp

@@ -0,0 +1,142 @@
+/*
+ * Copyright (c) 2023, Matthew Olsson <mattco@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibJS/Runtime/PromiseCapability.h>
+#include <LibWeb/Bindings/Intrinsics.h>
+#include <LibWeb/Bindings/WritableStreamDefaultWriterPrototype.h>
+#include <LibWeb/Streams/AbstractOperations.h>
+#include <LibWeb/Streams/WritableStream.h>
+#include <LibWeb/Streams/WritableStreamDefaultWriter.h>
+#include <LibWeb/WebIDL/ExceptionOr.h>
+
+namespace Web::Streams {
+
+JS_DEFINE_ALLOCATOR(WritableStreamDefaultWriter);
+
+WebIDL::ExceptionOr<JS::NonnullGCPtr<WritableStreamDefaultWriter>> WritableStreamDefaultWriter::construct_impl(JS::Realm& realm, JS::NonnullGCPtr<WritableStream> stream)
+{
+    auto writer = realm.heap().allocate<WritableStreamDefaultWriter>(realm, realm);
+
+    // 1. Perform ? SetUpWritableStreamDefaultWriter(this, stream).
+    TRY(set_up_writable_stream_default_writer(*writer, stream));
+
+    return writer;
+}
+
+// https://streams.spec.whatwg.org/#default-writer-closed
+JS::GCPtr<WebIDL::Promise> WritableStreamDefaultWriter::closed()
+{
+    // 1. Return this.[[closedPromise]].
+    return m_closed_promise;
+}
+
+// https://streams.spec.whatwg.org/#default-writer-desired-size
+WebIDL::ExceptionOr<Optional<double>> WritableStreamDefaultWriter::desired_size() const
+{
+    // 1. If this.[[stream]] is undefined, throw a TypeError exception.
+    if (!m_stream)
+        return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, "Cannot get desired size of writer that has no locked stream"sv };
+
+    // 2. Return ! WritableStreamDefaultWriterGetDesiredSize(this).
+    return writable_stream_default_writer_get_desired_size(*this);
+}
+
+// https://streams.spec.whatwg.org/#default-writer-ready
+JS::GCPtr<WebIDL::Promise> WritableStreamDefaultWriter::ready()
+{
+    // 1. Return this.[[readyPromise]].
+    return m_ready_promise;
+}
+
+// https://streams.spec.whatwg.org/#default-writer-abort
+JS::GCPtr<WebIDL::Promise> WritableStreamDefaultWriter::abort(JS::Value reason)
+{
+    auto& realm = this->realm();
+
+    // 1. If this.[[stream]] is undefined, return a promise rejected with a TypeError exception.
+    if (!m_stream) {
+        auto exception = JS::TypeError::create(realm, "Cannot abort a writer that has no locked stream"sv);
+        return WebIDL::create_rejected_promise(realm, exception);
+    }
+
+    // 2. Return ! WritableStreamDefaultWriterAbort(this, reason).
+    return writable_stream_default_writer_abort(*this, reason);
+}
+
+// https://streams.spec.whatwg.org/#default-writer-close
+JS::GCPtr<WebIDL::Promise> WritableStreamDefaultWriter::close()
+{
+    auto& realm = this->realm();
+
+    // 1. Let stream be this.[[stream]].
+
+    // 2. If stream is undefined, return a promise rejected with a TypeError exception.
+    if (!m_stream) {
+        auto exception = JS::TypeError::create(realm, "Cannot close a writer that has no locked stream"sv);
+        return WebIDL::create_rejected_promise(realm, exception);
+    }
+
+    // 3. If ! WritableStreamCloseQueuedOrInFlight(stream) is true, return a promise rejected with a TypeError exception.
+    if (writable_stream_close_queued_or_in_flight(*m_stream)) {
+        auto exception = JS::TypeError::create(realm, "Cannot close a stream that is already closed or errored"sv);
+        return WebIDL::create_rejected_promise(realm, exception);
+    }
+
+    // 4. Return ! WritableStreamDefaultWriterClose(this).
+    return writable_stream_default_writer_close(*this);
+}
+
+// https://streams.spec.whatwg.org/#default-writer-release-lock
+void WritableStreamDefaultWriter::release_lock()
+{
+    // 1. Let stream be this.[[stream]].
+
+    // 2. If stream is undefined, return.
+    if (!m_stream)
+        return;
+
+    // 3. Assert: stream.[[writer]] is not undefined.
+    VERIFY(m_stream->writer());
+
+    // 4. Perform ! WritableStreamDefaultWriterRelease(this).
+    writable_stream_default_writer_release(*this);
+}
+
+// https://streams.spec.whatwg.org/#default-writer-write
+JS::GCPtr<WebIDL::Promise> WritableStreamDefaultWriter::write(JS::Value chunk)
+{
+    auto& realm = this->realm();
+
+    // 1. If this.[[stream]] is undefined, return a promise rejected with a TypeError exception.
+    if (!m_stream) {
+        auto exception = JS::TypeError::create(realm, "Cannot write to a writer that has no locked stream"sv);
+        return WebIDL::create_rejected_promise(realm, exception);
+    }
+
+    // 2. Return ! WritableStreamDefaultWriterWrite(this, chunk).
+    return writable_stream_default_writer_write(*this, chunk);
+}
+
+WritableStreamDefaultWriter::WritableStreamDefaultWriter(JS::Realm& realm)
+    : Bindings::PlatformObject(realm)
+{
+}
+
+void WritableStreamDefaultWriter::initialize(JS::Realm& realm)
+{
+    Base::initialize(realm);
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(WritableStreamDefaultWriter);
+}
+
+void WritableStreamDefaultWriter::visit_edges(Cell::Visitor& visitor)
+{
+    Base::visit_edges(visitor);
+    visitor.visit(m_closed_promise);
+    visitor.visit(m_ready_promise);
+    visitor.visit(m_stream);
+}
+
+}