зеркало из https://github.com/mozilla/gecko-dev.git
131 строка
5.7 KiB
C++
131 строка
5.7 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/UnderlyingSinkCallbackHelpers.h"
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#include "StreamUtils.h"
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using namespace mozilla::dom;
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NS_IMPL_CYCLE_COLLECTION(UnderlyingSinkAlgorithmsBase)
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NS_IMPL_CYCLE_COLLECTING_ADDREF(UnderlyingSinkAlgorithmsBase)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(UnderlyingSinkAlgorithmsBase)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(UnderlyingSinkAlgorithmsBase)
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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NS_IMPL_CYCLE_COLLECTION_INHERITED_WITH_JS_MEMBERS(
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UnderlyingSinkAlgorithms, UnderlyingSinkAlgorithmsBase,
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(mGlobal, mStartCallback, mWriteCallback, mCloseCallback, mAbortCallback),
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(mUnderlyingSink))
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NS_IMPL_ADDREF_INHERITED(UnderlyingSinkAlgorithms, UnderlyingSinkAlgorithmsBase)
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NS_IMPL_RELEASE_INHERITED(UnderlyingSinkAlgorithms,
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UnderlyingSinkAlgorithmsBase)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(UnderlyingSinkAlgorithms)
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NS_INTERFACE_MAP_END_INHERITING(UnderlyingSinkAlgorithmsBase)
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// https://streams.spec.whatwg.org/#set-up-writable-stream-default-controller-from-underlying-sink
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void UnderlyingSinkAlgorithms::StartCallback(
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JSContext* aCx, WritableStreamDefaultController& aController,
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JS::MutableHandle<JS::Value> aRetVal, ErrorResult& aRv) {
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if (!mStartCallback) {
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// Step 2: Let startAlgorithm be an algorithm that returns undefined.
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aRetVal.setUndefined();
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return;
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}
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// Step 6: If underlyingSinkDict["start"] exists, then set startAlgorithm to
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// an algorithm which returns the result of invoking
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// underlyingSinkDict["start"] with argument list « controller » and callback
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// this value underlyingSink.
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JS::Rooted<JSObject*> thisObj(aCx, mUnderlyingSink);
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return mStartCallback->Call(thisObj, aController, aRetVal, aRv,
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"UnderlyingSink.start",
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CallbackFunction::eRethrowExceptions);
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}
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// https://streams.spec.whatwg.org/#set-up-writable-stream-default-controller-from-underlying-sink
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already_AddRefed<Promise> UnderlyingSinkAlgorithms::WriteCallback(
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JSContext* aCx, JS::Handle<JS::Value> aChunk,
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WritableStreamDefaultController& aController, ErrorResult& aRv) {
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if (!mWriteCallback) {
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// Step 3: Let writeAlgorithm be an algorithm that returns a promise
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// resolved with undefined.
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return Promise::CreateResolvedWithUndefined(mGlobal, aRv);
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}
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// Step 7: If underlyingSinkDict["write"] exists, then set writeAlgorithm to
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// an algorithm which takes an argument chunk and returns the result of
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// invoking underlyingSinkDict["write"] with argument list « chunk, controller
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// » and callback this value underlyingSink.
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JS::Rooted<JSObject*> thisObj(aCx, mUnderlyingSink);
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RefPtr<Promise> promise = mWriteCallback->Call(
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thisObj, aChunk, aController, aRv, "UnderlyingSink.write",
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CallbackFunction::eRethrowExceptions);
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return promise.forget();
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}
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// https://streams.spec.whatwg.org/#set-up-writable-stream-default-controller-from-underlying-sink
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already_AddRefed<Promise> UnderlyingSinkAlgorithms::CloseCallback(
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JSContext* aCx, ErrorResult& aRv) {
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if (!mCloseCallback) {
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// Step 4: Let closeAlgorithm be an algorithm that returns a promise
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// resolved with undefined.
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return Promise::CreateResolvedWithUndefined(mGlobal, aRv);
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}
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// Step 8: If underlyingSinkDict["close"] exists, then set closeAlgorithm to
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// an algorithm which returns the result of invoking
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// underlyingSinkDict["close"] with argument list «» and callback this value
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// underlyingSink.
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JS::Rooted<JSObject*> thisObj(aCx, mUnderlyingSink);
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RefPtr<Promise> promise =
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mCloseCallback->Call(thisObj, aRv, "UnderlyingSink.close",
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CallbackFunction::eRethrowExceptions);
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return promise.forget();
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}
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// https://streams.spec.whatwg.org/#set-up-writable-stream-default-controller-from-underlying-sink
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already_AddRefed<Promise> UnderlyingSinkAlgorithms::AbortCallback(
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JSContext* aCx, const Optional<JS::Handle<JS::Value>>& aReason,
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ErrorResult& aRv) {
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if (!mAbortCallback) {
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// Step 5: Let abortAlgorithm be an algorithm that returns a promise
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// resolved with undefined.
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return Promise::CreateResolvedWithUndefined(mGlobal, aRv);
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}
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// Step 9: Let abortAlgorithm be an algorithm that returns a promise resolved
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// with undefined.
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JS::Rooted<JSObject*> thisObj(aCx, mUnderlyingSink);
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RefPtr<Promise> promise =
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mAbortCallback->Call(thisObj, aReason, aRv, "UnderlyingSink.abort",
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CallbackFunction::eRethrowExceptions);
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return promise.forget();
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}
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// https://streams.spec.whatwg.org/#writable-set-up
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// Step 2.1: Let closeAlgorithmWrapper be an algorithm that runs these steps:
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already_AddRefed<Promise> UnderlyingSinkAlgorithmsWrapper::CloseCallback(
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JSContext* aCx, ErrorResult& aRv) {
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nsCOMPtr<nsIGlobalObject> global = xpc::CurrentNativeGlobal(aCx);
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return PromisifyAlgorithm(
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global, [&](ErrorResult& aRv) { return CloseCallbackImpl(aCx, aRv); },
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aRv);
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}
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// https://streams.spec.whatwg.org/#writable-set-up
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// Step 3.1: Let abortAlgorithmWrapper be an algorithm that runs these steps:
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already_AddRefed<Promise> UnderlyingSinkAlgorithmsWrapper::AbortCallback(
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JSContext* aCx, const Optional<JS::Handle<JS::Value>>& aReason,
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ErrorResult& aRv) {
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nsCOMPtr<nsIGlobalObject> global = xpc::CurrentNativeGlobal(aCx);
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return PromisifyAlgorithm(
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global,
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[&](ErrorResult& aRv) { return AbortCallbackImpl(aCx, aReason, aRv); },
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aRv);
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}
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