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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /dom/streams/ReadableStreamBYOBRequest.cpp | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/streams/ReadableStreamBYOBRequest.cpp')
-rw-r--r-- | dom/streams/ReadableStreamBYOBRequest.cpp | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/dom/streams/ReadableStreamBYOBRequest.cpp b/dom/streams/ReadableStreamBYOBRequest.cpp new file mode 100644 index 0000000000..655b914830 --- /dev/null +++ b/dom/streams/ReadableStreamBYOBRequest.cpp @@ -0,0 +1,129 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim:set ts=2 sw=2 sts=2 et cindent: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "mozilla/dom/ReadableStreamBYOBRequest.h" + +#include "mozilla/dom/ByteStreamHelpers.h" +#include "js/ArrayBuffer.h" +#include "js/TypeDecls.h" +#include "mozilla/dom/ReadableByteStreamController.h" +#include "mozilla/dom/ReadableStream.h" +#include "mozilla/dom/ReadableStreamBYOBRequestBinding.h" +#include "js/experimental/TypedData.h" +#include "mozilla/dom/ReadableStreamController.h" +#include "nsCOMPtr.h" +#include "nsIGlobalObject.h" +#include "nsWrapperCache.h" + +namespace mozilla::dom { + +using namespace streams_abstract; + +ReadableStreamBYOBRequest::ReadableStreamBYOBRequest(nsIGlobalObject* aGlobal) + : mGlobal(aGlobal) { + mozilla::HoldJSObjects(this); +} + +ReadableStreamBYOBRequest::~ReadableStreamBYOBRequest() { + mozilla::DropJSObjects(this); +} + +NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_WITH_JS_MEMBERS(ReadableStreamBYOBRequest, + (mGlobal, mController), + (mView)) + +NS_IMPL_CYCLE_COLLECTING_ADDREF(ReadableStreamBYOBRequest) +NS_IMPL_CYCLE_COLLECTING_RELEASE(ReadableStreamBYOBRequest) + +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(ReadableStreamBYOBRequest) + NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY + NS_INTERFACE_MAP_ENTRY(nsISupports) +NS_INTERFACE_MAP_END + +JSObject* ReadableStreamBYOBRequest::WrapObject( + JSContext* aCx, JS::Handle<JSObject*> aGivenProto) { + return ReadableStreamBYOBRequest_Binding::Wrap(aCx, this, aGivenProto); +} + +// https://streams.spec.whatwg.org/#rs-byob-request-view +void ReadableStreamBYOBRequest::GetView( + JSContext* cx, JS::MutableHandle<JSObject*> aRetVal) const { + // Step 1. + aRetVal.set(mView); +} + +// https://streams.spec.whatwg.org/#rs-byob-request-respond +void ReadableStreamBYOBRequest::Respond(JSContext* aCx, uint64_t bytesWritten, + ErrorResult& aRv) { + // Step 1. + if (!mController) { + aRv.ThrowTypeError("Undefined Controller"); + return; + } + + // Step 2. + bool isSharedMemory; + JS::Rooted<JSObject*> view(aCx, mView); + JS::Rooted<JSObject*> arrayBuffer( + aCx, JS_GetArrayBufferViewBuffer(aCx, view, &isSharedMemory)); + if (!arrayBuffer) { + aRv.StealExceptionFromJSContext(aCx); + return; + } + + if (JS::IsDetachedArrayBufferObject(arrayBuffer)) { + aRv.ThrowTypeError("View of Detached buffer"); + return; + } + + // Step 3. + MOZ_ASSERT(JS_GetArrayBufferViewByteLength(view) > 0); + + // Step 4. + MOZ_ASSERT(JS::GetArrayBufferByteLength(arrayBuffer) > 0); + + // Step 5. + RefPtr<ReadableByteStreamController> controller(mController); + ReadableByteStreamControllerRespond(aCx, controller, bytesWritten, aRv); +} + +// https://streams.spec.whatwg.org/#rs-byob-request-respond-with-new-view +void ReadableStreamBYOBRequest::RespondWithNewView(JSContext* aCx, + const ArrayBufferView& view, + ErrorResult& aRv) { + // Step 1. + if (!mController) { + aRv.ThrowTypeError("Undefined Controller"); + return; + } + + // Step 2. + bool isSharedMemory; + JS::Rooted<JSObject*> rootedViewObj(aCx, view.Obj()); + JS::Rooted<JSObject*> viewedArrayBuffer( + aCx, JS_GetArrayBufferViewBuffer(aCx, rootedViewObj, &isSharedMemory)); + if (!viewedArrayBuffer) { + aRv.StealExceptionFromJSContext(aCx); + return; + } + + if (JS::IsDetachedArrayBufferObject(viewedArrayBuffer)) { + aRv.ThrowTypeError("View of Detached Array Buffer"); + return; + } + + // Step 3. + RefPtr<ReadableByteStreamController> controller(mController); + ReadableByteStreamControllerRespondWithNewView(aCx, controller, rootedViewObj, + aRv); +} + +void ReadableStreamBYOBRequest::SetController( + ReadableByteStreamController* aController) { + mController = aController; +} + +} // namespace mozilla::dom |