зеркало из https://github.com/mozilla/gecko-dev.git
103 строки
4.5 KiB
C++
103 строки
4.5 KiB
C++
/* -*- 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/UnderlyingSinkCallbackHelpers.h"
|
|
#include "xpcpublic.h"
|
|
|
|
using namespace mozilla::dom;
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_WITH_JS_MEMBERS(UnderlyingSinkAlgorithms,
|
|
(mGlobal, mStartCallback,
|
|
mWriteCallback, mCloseCallback,
|
|
mAbortCallback),
|
|
(mUnderlyingSink))
|
|
NS_IMPL_CYCLE_COLLECTING_ADDREF(UnderlyingSinkAlgorithms)
|
|
NS_IMPL_CYCLE_COLLECTING_RELEASE(UnderlyingSinkAlgorithms)
|
|
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(UnderlyingSinkAlgorithms)
|
|
NS_INTERFACE_MAP_ENTRY(nsISupports)
|
|
NS_INTERFACE_MAP_END
|
|
|
|
// https://streams.spec.whatwg.org/#set-up-writable-stream-default-controller-from-underlying-sink
|
|
void UnderlyingSinkAlgorithms::StartCallback(
|
|
JSContext* aCx, WritableStreamDefaultController& aController,
|
|
JS::MutableHandle<JS::Value> aRetVal, ErrorResult& aRv) {
|
|
if (!mStartCallback) {
|
|
// Step 2: Let startAlgorithm be an algorithm that returns undefined.
|
|
aRetVal.setUndefined();
|
|
return;
|
|
}
|
|
|
|
// Step 6: If underlyingSinkDict["start"] exists, then set startAlgorithm to
|
|
// an algorithm which returns the result of invoking
|
|
// underlyingSinkDict["start"] with argument list « controller » and callback
|
|
// this value underlyingSink.
|
|
JS::Rooted<JSObject*> thisObj(aCx, mUnderlyingSink);
|
|
return mStartCallback->Call(thisObj, aController, aRetVal, aRv,
|
|
"UnderlyingSink.start",
|
|
CallbackFunction::eRethrowExceptions);
|
|
}
|
|
|
|
// https://streams.spec.whatwg.org/#set-up-writable-stream-default-controller-from-underlying-sink
|
|
already_AddRefed<Promise> UnderlyingSinkAlgorithms::WriteCallback(
|
|
JSContext* aCx, JS::Handle<JS::Value> aChunk,
|
|
WritableStreamDefaultController& aController, ErrorResult& aRv) {
|
|
if (!mWriteCallback) {
|
|
// Step 3: Let writeAlgorithm be an algorithm that returns a promise
|
|
// resolved with undefined.
|
|
return Promise::CreateResolvedWithUndefined(mGlobal, aRv);
|
|
}
|
|
|
|
// Step 7: If underlyingSinkDict["write"] exists, then set writeAlgorithm to
|
|
// an algorithm which takes an argument chunk and returns the result of
|
|
// invoking underlyingSinkDict["write"] with argument list « chunk, controller
|
|
// » and callback this value underlyingSink.
|
|
JS::Rooted<JSObject*> thisObj(aCx, mUnderlyingSink);
|
|
RefPtr<Promise> promise = mWriteCallback->Call(
|
|
thisObj, aChunk, aController, aRv, "UnderlyingSink.write",
|
|
CallbackFunction::eRethrowExceptions);
|
|
return promise.forget();
|
|
}
|
|
|
|
// https://streams.spec.whatwg.org/#set-up-writable-stream-default-controller-from-underlying-sink
|
|
already_AddRefed<Promise> UnderlyingSinkAlgorithms::CloseCallback(
|
|
JSContext* aCx, ErrorResult& aRv) {
|
|
if (!mCloseCallback) {
|
|
// Step 4: Let closeAlgorithm be an algorithm that returns a promise
|
|
// resolved with undefined.
|
|
return Promise::CreateResolvedWithUndefined(mGlobal, aRv);
|
|
}
|
|
|
|
// Step 8: If underlyingSinkDict["close"] exists, then set closeAlgorithm to
|
|
// an algorithm which returns the result of invoking
|
|
// underlyingSinkDict["close"] with argument list «» and callback this value
|
|
// underlyingSink.
|
|
JS::Rooted<JSObject*> thisObj(aCx, mUnderlyingSink);
|
|
RefPtr<Promise> promise =
|
|
mCloseCallback->Call(thisObj, aRv, "UnderlyingSink.close",
|
|
CallbackFunction::eRethrowExceptions);
|
|
return promise.forget();
|
|
}
|
|
|
|
// https://streams.spec.whatwg.org/#set-up-writable-stream-default-controller-from-underlying-sink
|
|
already_AddRefed<Promise> UnderlyingSinkAlgorithms::AbortCallback(
|
|
JSContext* aCx, const Optional<JS::Handle<JS::Value>>& aReason,
|
|
ErrorResult& aRv) {
|
|
if (!mAbortCallback) {
|
|
// Step 5: Let abortAlgorithm be an algorithm that returns a promise
|
|
// resolved with undefined.
|
|
return Promise::CreateResolvedWithUndefined(mGlobal, aRv);
|
|
}
|
|
|
|
// Step 9: Let abortAlgorithm be an algorithm that returns a promise resolved
|
|
// with undefined.
|
|
JS::Rooted<JSObject*> thisObj(aCx, mUnderlyingSink);
|
|
RefPtr<Promise> promise =
|
|
mAbortCallback->Call(thisObj, aReason, aRv, "UnderlyingSink.abort",
|
|
CallbackFunction::eRethrowExceptions);
|
|
|
|
return promise.forget();
|
|
}
|