TestInterfaceAsyncIterableSingle.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* 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/. */

#ifndef mozilla_dom_TestInterfaceAsyncIterableSingle_h

#define mozilla_dom_TestInterfaceAsyncIterableSingle_h

#include "IterableIterator.h"

#include "nsCOMPtr.h"

#include "nsWrapperCache.h"

#include "nsTArray.h"

#include "mozilla/dom/TestInterfaceJSMaplikeSetlikeIterableBinding.h"

class nsPIDOMWindowInner;

namespace mozilla {

class ErrorResult;

namespace dom {

class GlobalObject;

struct TestInterfaceAsyncIterableSingleOptions;

// Implementation of test binding for webidl iterable interfaces, using

// primitives for value type

class TestInterfaceAsyncIterableSingle : public nsISupports,

                                         public nsWrapperCache {

 public:

  NS_DECL_CYCLE_COLLECTING_ISUPPORTS

  NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(TestInterfaceAsyncIterableSingle)

  explicit TestInterfaceAsyncIterableSingle(nsPIDOMWindowInner* aParent,

                                            bool aFailToInit = false);

  nsPIDOMWindowInner* GetParentObject() const;

  virtual JSObject* WrapObject(JSContext* aCx,

                               JS::Handle<JSObject*> aGivenProto) override;

  static already_AddRefed<TestInterfaceAsyncIterableSingle> Constructor(

      const GlobalObject& aGlobal,

      const TestInterfaceAsyncIterableSingleOptions& aOptions, ErrorResult& rv);

  using Iterator = AsyncIterableIterator<TestInterfaceAsyncIterableSingle>;

  already_AddRefed<Promise> GetNextIterationResult(Iterator* aIterator,

                                                   ErrorResult& aRv);

  struct IteratorData {

    void Traverse(nsCycleCollectionTraversalCallback& cb);

    void Unlink();

    uint32_t mIndex = 0;

    uint32_t mMultiplier = 1;

    Sequence<OwningNonNull<Promise>> mBlockingPromises;

    size_t mBlockingPromisesIndex = 0;

    uint32_t mFailNextAfter = 4294967295;

    bool mThrowFromNext = false;

    RefPtr<TestThrowingCallback> mThrowFromReturn;

};

  void InitAsyncIteratorData(IteratorData& aData, Iterator::IteratorType aType,

                             ErrorResult& aError);

 protected:

  already_AddRefed<Promise> GetNextIterationResult(

      IterableIteratorBase* aIterator, IteratorData& aData, ErrorResult& aRv);

  virtual ~TestInterfaceAsyncIterableSingle() = default;

 private:

  void ResolvePromise(IterableIteratorBase* aIterator, IteratorData& aData,

                      Promise* aPromise);

  nsCOMPtr<nsPIDOMWindowInner> mParent;

  bool mFailToInit;

};

}  // namespace dom

}  // namespace mozilla

#endif  // mozilla_dom_TestInterfaceAsyncIterableSingle_h