зеркало из https://github.com/mozilla/gecko-dev.git
100 строки
3.3 KiB
C++
100 строки
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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 "StructuredCloneTester.h"
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#include "js/StructuredClone.h"
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#include "mozilla/RefPtr.h"
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#include "mozilla/dom/StructuredCloneTags.h"
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#include "mozilla/dom/StructuredCloneTesterBinding.h"
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#include "xpcpublic.h"
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namespace mozilla {
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class ErrorResult;
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namespace dom {
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NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_0(StructuredCloneTester)
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NS_IMPL_CYCLE_COLLECTING_ADDREF(StructuredCloneTester)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(StructuredCloneTester)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(StructuredCloneTester)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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StructuredCloneTester::StructuredCloneTester(nsISupports* aParent,
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const bool aSerializable,
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const bool aDeserializable)
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: mParent(aParent),
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mSerializable(aSerializable),
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mDeserializable(aDeserializable) {}
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/* static */
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already_AddRefed<StructuredCloneTester> StructuredCloneTester::Constructor(
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const GlobalObject& aGlobal, const bool aSerializable,
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const bool aDeserializable, ErrorResult& aRv) {
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RefPtr<StructuredCloneTester> sct = new StructuredCloneTester(
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aGlobal.GetAsSupports(), aSerializable, aDeserializable);
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return sct.forget();
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}
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bool StructuredCloneTester::Serializable() const { return mSerializable; }
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bool StructuredCloneTester::Deserializable() const { return mDeserializable; }
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/* static */
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JSObject* StructuredCloneTester::ReadStructuredClone(
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JSContext* aCx, JSStructuredCloneReader* aReader) {
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uint32_t serializable = 0;
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uint32_t deserializable = 0;
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if (!JS_ReadUint32Pair(aReader, &serializable, &deserializable)) {
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return nullptr;
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}
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nsIGlobalObject* global = xpc::CurrentNativeGlobal(aCx);
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if (NS_WARN_IF(!global)) {
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return nullptr;
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}
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// Prevent the return value from being trashed by a GC during ~RefPtr
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JS::Rooted<JSObject*> result(aCx);
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{
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RefPtr<StructuredCloneTester> sct =
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new StructuredCloneTester(global, static_cast<bool>(serializable),
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static_cast<bool>(deserializable));
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// "Fail" deserialization
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if (!sct->Deserializable()) {
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xpc::Throw(aCx, NS_ERROR_DOM_DATA_CLONE_ERR);
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return nullptr;
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}
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result = sct->WrapObject(aCx, nullptr);
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}
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return result;
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}
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bool StructuredCloneTester::WriteStructuredClone(
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JSStructuredCloneWriter* aWriter) const {
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return JS_WriteUint32Pair(aWriter, SCTAG_DOM_STRUCTURED_CLONE_TESTER, 0) &&
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JS_WriteUint32Pair(aWriter, static_cast<uint32_t>(Serializable()),
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static_cast<uint32_t>(Deserializable()));
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}
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nsISupports* StructuredCloneTester::GetParentObject() const { return mParent; }
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JSObject* StructuredCloneTester::WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) {
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return StructuredCloneTester_Binding::Wrap(aCx, this, aGivenProto);
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}
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} // namespace dom
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} // namespace mozilla
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