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TestInterfaceAsyncIterableSingle.h (2857B)

      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
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #ifndef mozilla_dom_TestInterfaceAsyncIterableSingle_h
      8 #define mozilla_dom_TestInterfaceAsyncIterableSingle_h
      9 
     10 #include "IterableIterator.h"
     11 #include "mozilla/dom/TestInterfaceJSMaplikeSetlikeIterableBinding.h"
     12 #include "nsCOMPtr.h"
     13 #include "nsTArray.h"
     14 #include "nsWrapperCache.h"
     15 
     16 class nsPIDOMWindowInner;
     17 
     18 namespace mozilla {
     19 
     20 class ErrorResult;
     21 
     22 namespace dom {
     23 
     24 class GlobalObject;
     25 struct TestInterfaceAsyncIterableSingleOptions;
     26 
     27 // Implementation of test binding for webidl iterable interfaces, using
     28 // primitives for value type
     29 class TestInterfaceAsyncIterableSingle : public nsISupports,
     30                                         public nsWrapperCache {
     31 public:
     32  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
     33  NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(TestInterfaceAsyncIterableSingle)
     34 
     35  explicit TestInterfaceAsyncIterableSingle(nsPIDOMWindowInner* aParent,
     36                                            bool aFailToInit = false);
     37  nsPIDOMWindowInner* GetParentObject() const;
     38  virtual JSObject* WrapObject(JSContext* aCx,
     39                               JS::Handle<JSObject*> aGivenProto) override;
     40  static already_AddRefed<TestInterfaceAsyncIterableSingle> Constructor(
     41      const GlobalObject& aGlobal,
     42      const TestInterfaceAsyncIterableSingleOptions& aOptions, ErrorResult& rv);
     43 
     44  using Iterator = AsyncIterableIterator<TestInterfaceAsyncIterableSingle>;
     45  already_AddRefed<Promise> GetNextIterationResult(Iterator* aIterator,
     46                                                   ErrorResult& aRv);
     47 
     48  struct IteratorData {
     49    void Traverse(nsCycleCollectionTraversalCallback& cb);
     50    void Unlink();
     51 
     52    uint32_t mIndex = 0;
     53    uint32_t mMultiplier = 1;
     54    Sequence<OwningNonNull<Promise>> mBlockingPromises;
     55    size_t mBlockingPromisesIndex = 0;
     56    uint32_t mFailNextAfter = 4294967295;
     57    bool mThrowFromNext = false;
     58    RefPtr<TestThrowingCallback> mThrowFromReturn;
     59  };
     60 
     61  void InitAsyncIteratorData(IteratorData& aData, Iterator::IteratorType aType,
     62                             ErrorResult& aError);
     63 
     64 protected:
     65  already_AddRefed<Promise> GetNextIterationResult(
     66      IterableIteratorBase* aIterator, IteratorData& aData, ErrorResult& aRv);
     67 
     68  virtual ~TestInterfaceAsyncIterableSingle() = default;
     69 
     70 private:
     71  void ResolvePromise(IterableIteratorBase* aIterator, IteratorData& aData,
     72                      Promise* aPromise);
     73 
     74  nsCOMPtr<nsPIDOMWindowInner> mParent;
     75  bool mFailToInit;
     76 };
     77 
     78 }  // namespace dom
     79 }  // namespace mozilla
     80 
     81 #endif  // mozilla_dom_TestInterfaceAsyncIterableSingle_h