tor-browser

The Tor Browser
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TestInterfaceAsyncIterableDouble.cpp (3562B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
      5 * You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #include "mozilla/dom/TestInterfaceAsyncIterableDouble.h"
      8 
      9 #include "mozilla/dom/BindingUtils.h"
     10 #include "mozilla/dom/TestInterfaceJSMaplikeSetlikeIterableBinding.h"
     11 #include "nsPIDOMWindow.h"
     12 
     13 namespace mozilla::dom {
     14 
     15 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(TestInterfaceAsyncIterableDouble, mParent)
     16 
     17 NS_IMPL_CYCLE_COLLECTING_ADDREF(TestInterfaceAsyncIterableDouble)
     18 NS_IMPL_CYCLE_COLLECTING_RELEASE(TestInterfaceAsyncIterableDouble)
     19 
     20 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(TestInterfaceAsyncIterableDouble)
     21  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
     22  NS_INTERFACE_MAP_ENTRY(nsISupports)
     23 NS_INTERFACE_MAP_END
     24 
     25 TestInterfaceAsyncIterableDouble::TestInterfaceAsyncIterableDouble(
     26    nsPIDOMWindowInner* aParent)
     27    : mParent(aParent) {
     28  mValues.AppendElement(std::pair<nsString, nsString>(u"a"_ns, u"b"_ns));
     29  mValues.AppendElement(std::pair<nsString, nsString>(u"c"_ns, u"d"_ns));
     30  mValues.AppendElement(std::pair<nsString, nsString>(u"e"_ns, u"f"_ns));
     31 }
     32 
     33 // static
     34 already_AddRefed<TestInterfaceAsyncIterableDouble>
     35 TestInterfaceAsyncIterableDouble::Constructor(const GlobalObject& aGlobal,
     36                                              ErrorResult& aRv) {
     37  nsCOMPtr<nsPIDOMWindowInner> window =
     38      do_QueryInterface(aGlobal.GetAsSupports());
     39  if (!window) {
     40    aRv.Throw(NS_ERROR_FAILURE);
     41    return nullptr;
     42  }
     43 
     44  RefPtr<TestInterfaceAsyncIterableDouble> r =
     45      new TestInterfaceAsyncIterableDouble(window);
     46  return r.forget();
     47 }
     48 
     49 JSObject* TestInterfaceAsyncIterableDouble::WrapObject(
     50    JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
     51  return TestInterfaceAsyncIterableDouble_Binding::Wrap(aCx, this, aGivenProto);
     52 }
     53 
     54 nsPIDOMWindowInner* TestInterfaceAsyncIterableDouble::GetParentObject() const {
     55  return mParent;
     56 }
     57 
     58 already_AddRefed<Promise>
     59 TestInterfaceAsyncIterableDouble::GetNextIterationResult(Iterator* aIterator,
     60                                                         ErrorResult& aRv) {
     61  RefPtr<Promise> promise = Promise::Create(mParent->AsGlobal(), aRv);
     62  if (NS_WARN_IF(aRv.Failed())) {
     63    return nullptr;
     64  }
     65 
     66  NS_DispatchToMainThread(NewRunnableMethod<RefPtr<Iterator>, RefPtr<Promise>>(
     67      "TestInterfaceAsyncIterableDouble::GetNextIterationResult", this,
     68      &TestInterfaceAsyncIterableDouble::ResolvePromise, aIterator, promise));
     69 
     70  return promise.forget();
     71 }
     72 
     73 void TestInterfaceAsyncIterableDouble::ResolvePromise(Iterator* aIterator,
     74                                                      Promise* aPromise) {
     75  IteratorData& data = aIterator->Data();
     76 
     77  // Test data: ['a', 'b'], ['c', 'd'], ['e', 'f']
     78  uint32_t idx = data.mIndex;
     79  if (idx >= mValues.Length()) {
     80    iterator_utils::ResolvePromiseForFinished(aPromise);
     81  } else {
     82    switch (aIterator->GetIteratorType()) {
     83      case IterableIteratorBase::IteratorType::Keys:
     84        aPromise->MaybeResolve(mValues[idx].first);
     85        break;
     86      case IterableIteratorBase::IteratorType::Values:
     87        aPromise->MaybeResolve(mValues[idx].second);
     88        break;
     89      case IterableIteratorBase::IteratorType::Entries:
     90        iterator_utils::ResolvePromiseWithKeyAndValue(
     91            aPromise, mValues[idx].first, mValues[idx].second);
     92        break;
     93    }
     94 
     95    data.mIndex++;
     96  }
     97 }
     98 
     99 }  // namespace mozilla::dom