ok all

Assets/Scenes/SandboxMain.cs

@@ -1,20 +1,33 @@
-using System.Collections;
+using System;
+using System.Collections;
 using System.Collections.Generic;
+using System.Threading;
 using UniRx.Async;
 using UnityEngine;
+using UnityEngine.Networking;
+using UnityEngine.UI;
 
 public class SandboxMain : MonoBehaviour
 {
-    // Start is called before the first frame update
+    public Button okButton;
-    void Start()
+    public Button cancelButton;
-    {
+    CancellationTokenSource cts;
-        RunAsync().Forget();
-    }
 
-    async UniTaskVoid RunAsync()
+    async void Start()
     {
-        var id = await UniTask.Run(() => System.Threading.Thread.CurrentThread.ManagedThreadId, configureAwait: false);
+        await UniTask.CompletedTask;  // ok
-        UnityEngine.Debug.Log("ReturnId:" + id);
+
-        UnityEngine.Debug.Log("CurrentId:" + System.Threading.Thread.CurrentThread.ManagedThreadId);
+        // var subject = new Subject<Unit>();
+        //subject.OnCompleted();
+        IObservable<AsyncUnit> subject = default;
+        try
+        {
+            await subject.ToUniTask();  // exception
+        }
+        catch (Exception exception)
+        {
+            Debug.Log(exception);
+        }
     }
 }
+

Assets/Scenes/SandboxMain.unity

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Assets/UniRx.Async/CompilerServices/AsyncMethodBuilderAttribute.cs

@@ -4,7 +4,7 @@
 
 namespace System.Runtime.CompilerServices
 {
-    public sealed class AsyncMethodBuilderAttribute : Attribute
+    internal sealed class AsyncMethodBuilderAttribute : Attribute
     {
         public Type BuilderType { get; }
 

Assets/UniRx.Async/EnumeratorAsyncExtensions.cs

@@ -3,9 +3,11 @@
 
 using System;
 using System.Collections;
+using System.Reflection;
 using System.Runtime.ExceptionServices;
 using System.Threading;
 using UniRx.Async.Internal;
+using UnityEngine;
 
 namespace UniRx.Async
 {
@@ -57,7 +59,7 @@ namespace UniRx.Async
                     return;
                 }
 
-                this.innerEnumerator = innerEnumerator;
+                this.innerEnumerator = ConsumeEnumerator(innerEnumerator);
                 this.status = AwaiterStatus.Pending;
                 this.cancellationToken = cancellationToken;
                 this.continuation = null;
@@ -142,6 +144,108 @@ namespace UniRx.Async
                 Error.ThrowWhenContinuationIsAlreadyRegistered(this.continuation);
                 this.continuation = continuation;
             }
+
+            // Unwrap YieldInstructions
+
+            static IEnumerator ConsumeEnumerator(IEnumerator enumerator)
+            {
+                while (enumerator.MoveNext())
+                {
+                    var current = enumerator.Current;
+                    if (current == null)
+                    {
+                        yield return null;
+                    }
+                    else if (current is CustomYieldInstruction)
+                    {
+                        // WWW, WaitForSecondsRealtime
+                        var e2 = UnwrapWaitCustomYieldInstruction((CustomYieldInstruction)current);
+                        while (e2.MoveNext())
+                        {
+                            yield return null;
+                        }
+                    }
+                    else if (current is YieldInstruction)
+                    {
+                        IEnumerator innerCoroutine = null;
+                        switch (current)
+                        {
+                            case AsyncOperation ao:
+                                innerCoroutine = UnwrapWaitAsyncOperation(ao);
+                                break;
+                            case WaitForSeconds wfs:
+                                innerCoroutine = UnwrapWaitForSeconds(wfs);
+                                break;
+                        }
+                        if (innerCoroutine != null)
+                        {
+                            while (innerCoroutine.MoveNext())
+                            {
+                                yield return null;
+                            }
+                        }
+                        else
+                        {
+                            yield return null;
+                        }
+                    }
+                    else if (current is IEnumerator e3)
+                    {
+                        while (e3.MoveNext())
+                        {
+                            yield return null;
+                        }
+                    }
+                    else
+                    {
+                        // WaitForEndOfFrame, WaitForFixedUpdate, others.
+                        yield return null;
+                    }
+                }
+            }
+
+            // WWW and others as CustomYieldInstruction.
+            static IEnumerator UnwrapWaitCustomYieldInstruction(CustomYieldInstruction yieldInstruction)
+            {
+                while (yieldInstruction.keepWaiting)
+                {
+                    yield return null;
+                }
+            }
+
+            static readonly FieldInfo waitForSeconds_Seconds = typeof(WaitForSeconds).GetField("m_Seconds", BindingFlags.Instance | BindingFlags.GetField | BindingFlags.NonPublic);
+
+            static IEnumerator UnwrapWaitForSeconds(WaitForSeconds waitForSeconds)
+            {
+                var second = (float)waitForSeconds_Seconds.GetValue(waitForSeconds);
+                var startTime = DateTimeOffset.UtcNow;
+                while (true)
+                {
+                    yield return null;
+
+                    var elapsed = (DateTimeOffset.UtcNow - startTime).TotalSeconds;
+                    if (elapsed >= second)
+                    {
+                        break;
+                    }
+                };
+            }
+
+            static IEnumerator UnwrapEnumerator(IEnumerator enumerator)
+            {
+                while (enumerator.MoveNext())
+                {
+                    yield return null;
+                }
+            }
+
+            static IEnumerator UnwrapWaitAsyncOperation(AsyncOperation asyncOperation)
+            {
+                while (!asyncOperation.isDone)
+                {
+                    yield return null;
+                }
+            }
         }
     }
 }

Assets/UniRx.Async/Triggers/AsyncAnimatorTrigger.cs

@@ -29,7 +29,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnAnimatorIKAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<int> OnAnimatorIKAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onAnimatorIK, ref onAnimatorIKs, cancellationToken);
         }

Assets/UniRx.Async/Triggers/AsyncBeginDragTrigger.cs

@@ -28,7 +28,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnBeginDragAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<PointerEventData> OnBeginDragAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onBeginDrag, ref onBeginDrags, cancellationToken);
         }

Assets/UniRx.Async/Triggers/AsyncCancelTrigger.cs

@@ -28,7 +28,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnCancelAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<BaseEventData> OnCancelAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onCancel, ref onCancels, cancellationToken);
         }

Assets/UniRx.Async/Triggers/AsyncCollision2DTrigger.cs

@@ -32,7 +32,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnCollisionEnter2DAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<Collision2D> OnCollisionEnter2DAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onCollisionEnter2D, ref onCollisionEnter2Ds, cancellationToken);
         }
@@ -44,7 +44,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnCollisionExit2DAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<Collision2D> OnCollisionExit2DAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onCollisionExit2D, ref onCollisionExit2Ds, cancellationToken);
         }
@@ -56,7 +56,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnCollisionStay2DAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<Collision2D> OnCollisionStay2DAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onCollisionStay2D, ref onCollisionStay2Ds, cancellationToken);
         }

Assets/UniRx.Async/Triggers/AsyncCollisionTrigger.cs

@@ -32,7 +32,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnCollisionEnterAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<Collision> OnCollisionEnterAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onCollisionEnter, ref onCollisionEnters, cancellationToken);
         }
@@ -44,7 +44,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnCollisionExitAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<Collision> OnCollisionExitAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onCollisionExit, ref onCollisionExits, cancellationToken);
         }
@@ -56,7 +56,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnCollisionStayAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<Collision> OnCollisionStayAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onCollisionStay, ref onCollisionStays, cancellationToken);
         }

Assets/UniRx.Async/Triggers/AsyncDeselectTrigger.cs

@@ -28,7 +28,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnDeselectAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<BaseEventData> OnDeselectAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onDeselect, ref onDeselects, cancellationToken);
         }

Assets/UniRx.Async/Triggers/AsyncDragTrigger.cs

@@ -28,7 +28,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnDragAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<PointerEventData> OnDragAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onDrag, ref onDrags, cancellationToken);
         }

Assets/UniRx.Async/Triggers/AsyncDropTrigger.cs

@@ -28,7 +28,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnDropAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<PointerEventData> OnDropAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onDrop, ref onDrops, cancellationToken);
         }

Assets/UniRx.Async/Triggers/AsyncEndDragTrigger.cs

@@ -28,7 +28,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnEndDragAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<PointerEventData> OnEndDragAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onEndDrag, ref onEndDrags, cancellationToken);
         }

Assets/UniRx.Async/Triggers/AsyncEventTrigger.cs

@@ -59,7 +59,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnDeselectAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<BaseEventData> OnDeselectAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onDeselect, ref onDeselects, cancellationToken);
         }
@@ -71,7 +71,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnMoveAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<AxisEventData> OnMoveAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onMove, ref onMoves, cancellationToken);
         }
@@ -83,7 +83,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnPointerDownAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<PointerEventData> OnPointerDownAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onPointerDown, ref onPointerDowns, cancellationToken);
         }
@@ -95,7 +95,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnPointerEnterAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<PointerEventData> OnPointerEnterAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onPointerEnter, ref onPointerEnters, cancellationToken);
         }
@@ -107,7 +107,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnPointerExitAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<PointerEventData> OnPointerExitAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onPointerExit, ref onPointerExits, cancellationToken);
         }
@@ -119,7 +119,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnPointerUpAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<PointerEventData> OnPointerUpAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onPointerUp, ref onPointerUps, cancellationToken);
         }
@@ -131,7 +131,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnSelectAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<BaseEventData> OnSelectAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onSelect, ref onSelects, cancellationToken);
         }
@@ -143,7 +143,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnPointerClickAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<PointerEventData> OnPointerClickAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onPointerClick, ref onPointerClicks, cancellationToken);
         }
@@ -155,7 +155,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnSubmitAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<BaseEventData> OnSubmitAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onSubmit, ref onSubmits, cancellationToken);
         }
@@ -167,7 +167,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnDragAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<PointerEventData> OnDragAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onDrag, ref onDrags, cancellationToken);
         }
@@ -179,7 +179,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnBeginDragAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<PointerEventData> OnBeginDragAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onBeginDrag, ref onBeginDrags, cancellationToken);
         }
@@ -191,7 +191,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnEndDragAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<PointerEventData> OnEndDragAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onEndDrag, ref onEndDrags, cancellationToken);
         }
@@ -203,7 +203,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnDropAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<PointerEventData> OnDropAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onDrop, ref onDrops, cancellationToken);
         }
@@ -215,7 +215,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnUpdateSelectedAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<BaseEventData> OnUpdateSelectedAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onUpdateSelected, ref onUpdateSelecteds, cancellationToken);
         }
@@ -227,7 +227,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnInitializePotentialDragAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<PointerEventData> OnInitializePotentialDragAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onInitializePotentialDrag, ref onInitializePotentialDrags, cancellationToken);
         }
@@ -239,7 +239,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnCancelAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<BaseEventData> OnCancelAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onCancel, ref onCancels, cancellationToken);
         }
@@ -251,7 +251,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnScrollAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<PointerEventData> OnScrollAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onScroll, ref onScrolls, cancellationToken);
         }

Assets/UniRx.Async/Triggers/AsyncInitializePotentialDragTrigger.cs

@@ -28,7 +28,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnInitializePotentialDragAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<PointerEventData> OnInitializePotentialDragAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onInitializePotentialDrag, ref onInitializePotentialDrags, cancellationToken);
         }

Assets/UniRx.Async/Triggers/AsyncJointTrigger.cs

@@ -30,7 +30,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnJointBreakAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<float> OnJointBreakAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onJointBreak, ref onJointBreaks, cancellationToken);
         }
@@ -42,7 +42,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnJointBreak2DAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<Joint2D> OnJointBreak2DAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onJointBreak2D, ref onJointBreak2Ds, cancellationToken);
         }

Assets/UniRx.Async/Triggers/AsyncMoveTrigger.cs

@@ -28,7 +28,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnMoveAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<AxisEventData> OnMoveAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onMove, ref onMoves, cancellationToken);
         }

Assets/UniRx.Async/Triggers/AsyncParticleTrigger.cs

@@ -28,7 +28,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnParticleCollisionAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<GameObject> OnParticleCollisionAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onParticleCollision, ref onParticleCollisions, cancellationToken);
         }

Assets/UniRx.Async/Triggers/AsyncPointerClickTrigger.cs

@@ -28,7 +28,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnPointerClickAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<PointerEventData> OnPointerClickAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onPointerClick, ref onPointerClicks, cancellationToken);
         }

Assets/UniRx.Async/Triggers/AsyncPointerDownTrigger.cs

@@ -28,7 +28,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnPointerDownAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<PointerEventData> OnPointerDownAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onPointerDown, ref onPointerDowns, cancellationToken);
         }

Assets/UniRx.Async/Triggers/AsyncPointerEnterTrigger.cs

@@ -28,7 +28,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnPointerEnterAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<PointerEventData> OnPointerEnterAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onPointerEnter, ref onPointerEnters, cancellationToken);
         }

Assets/UniRx.Async/Triggers/AsyncPointerExitTrigger.cs

@@ -28,7 +28,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnPointerExitAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<PointerEventData> OnPointerExitAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onPointerExit, ref onPointerExits, cancellationToken);
         }

Assets/UniRx.Async/Triggers/AsyncPointerUpTrigger.cs

@@ -28,7 +28,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnPointerUpAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<PointerEventData> OnPointerUpAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onPointerUp, ref onPointerUps, cancellationToken);
         }

Assets/UniRx.Async/Triggers/AsyncScrollTrigger.cs

@@ -28,7 +28,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnScrollAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<PointerEventData> OnScrollAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onScroll, ref onScrolls, cancellationToken);
         }

Assets/UniRx.Async/Triggers/AsyncSelectTrigger.cs

@@ -28,7 +28,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnSelectAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<BaseEventData> OnSelectAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onSelect, ref onSelects, cancellationToken);
         }

Assets/UniRx.Async/Triggers/AsyncSubmitTrigger.cs

@@ -28,7 +28,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnSubmitAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<BaseEventData> OnSubmitAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onSubmit, ref onSubmits, cancellationToken);
         }

Assets/UniRx.Async/Triggers/AsyncTrigger2DTrigger.cs

@@ -32,7 +32,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnTriggerEnter2DAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<Collider2D> OnTriggerEnter2DAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onTriggerEnter2D, ref onTriggerEnter2Ds, cancellationToken);
         }
@@ -44,7 +44,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnTriggerExit2DAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<Collider2D> OnTriggerExit2DAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onTriggerExit2D, ref onTriggerExit2Ds, cancellationToken);
         }
@@ -56,7 +56,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnTriggerStay2DAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<Collider2D> OnTriggerStay2DAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onTriggerStay2D, ref onTriggerStay2Ds, cancellationToken);
         }

Assets/UniRx.Async/Triggers/AsyncTriggerTrigger.cs

@@ -32,7 +32,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnTriggerEnterAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<Collider> OnTriggerEnterAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onTriggerEnter, ref onTriggerEnters, cancellationToken);
         }
@@ -44,7 +44,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnTriggerExitAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<Collider> OnTriggerExitAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onTriggerExit, ref onTriggerExits, cancellationToken);
         }
@@ -56,7 +56,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnTriggerStayAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<Collider> OnTriggerStayAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onTriggerStay, ref onTriggerStays, cancellationToken);
         }

Assets/UniRx.Async/Triggers/AsyncUpdateSelectedTrigger.cs

@@ -28,7 +28,7 @@ namespace UniRx.Async.Triggers
         }
 
 
-        public UniTask OnUpdateSelectedAsync(CancellationToken cancellationToken = default(CancellationToken))
+        public UniTask<BaseEventData> OnUpdateSelectedAsync(CancellationToken cancellationToken = default(CancellationToken))
         {
             return GetOrAddPromise(ref onUpdateSelected, ref onUpdateSelecteds, cancellationToken);
         }

Assets/UniRx.Async/UnityAsyncExtensions.cs

@@ -168,13 +168,16 @@ namespace UniRx.Async
                     }
                 }
 
-                asyncOperation = null; // remove reference.
-
                 if (continuationAction != null)
                 {
                     asyncOperation.completed -= continuationAction;
+                    asyncOperation = null; // remove reference.
                     continuationAction = null;
                 }
+                else
+                {
+                    asyncOperation = null; // remove reference.
+                }
             }
 
             public void OnCompleted(Action continuation)
@@ -316,13 +319,17 @@ namespace UniRx.Async
                 }
 
                 this.result = asyncOperation.asset;
-                asyncOperation = null; // remove reference.
 
                 if (continuationAction != null)
                 {
                     asyncOperation.completed -= continuationAction;
+                    asyncOperation = null; // remove reference.
                     continuationAction = null;
                 }
+                else
+                {
+                    asyncOperation = null; // remove reference.
+                }
 
                 return this.result;
             }
@@ -576,13 +583,18 @@ namespace UniRx.Async
                 }
 
                 this.result = asyncOperation.webRequest;
-                asyncOperation = null; // remove reference.
 
                 if (continuationAction != null)
                 {
                     asyncOperation.completed -= continuationAction;
+                    asyncOperation = null; // remove reference.
                     continuationAction = null;
                 }
+                else
+                {
+                    asyncOperation = null; // remove reference.
+                }
+
 
                 return this.result;
             }