UniRx 에셋 추가

Gameton-06/Assets/Plugins/UniRx/Scripts/Operators/Distinct.cs

@@ -0,0 +1,133 @@
+using System;
+using System.Collections.Generic;
+
+namespace UniRx.Operators
+{
+    internal class DistinctObservable<T> : OperatorObservableBase<T>
+    {
+        readonly IObservable<T> source;
+        readonly IEqualityComparer<T> comparer;
+
+        public DistinctObservable(IObservable<T> source, IEqualityComparer<T> comparer)
+            : base(source.IsRequiredSubscribeOnCurrentThread())
+        {
+            this.source = source;
+            this.comparer = comparer;
+        }
+
+        protected override IDisposable SubscribeCore(IObserver<T> observer, IDisposable cancel)
+        {
+            return source.Subscribe(new Distinct(this, observer, cancel));
+        }
+
+        class Distinct : OperatorObserverBase<T, T>
+        {
+            readonly HashSet<T> hashSet;
+
+            public Distinct(DistinctObservable<T> parent, IObserver<T> observer, IDisposable cancel)
+                : base(observer, cancel)
+            {
+                hashSet = (parent.comparer == null)
+                    ? new HashSet<T>()
+                    : new HashSet<T>(parent.comparer);
+            }
+
+            public override void OnNext(T value)
+            {
+                var key = default(T);
+                var isAdded = false;
+                try
+                {
+                    key = value;
+                    isAdded = hashSet.Add(key);
+                }
+                catch (Exception exception)
+                {
+                    try { observer.OnError(exception); } finally { Dispose(); }
+                    return;
+                }
+
+                if (isAdded)
+                {
+                    observer.OnNext(value);
+                }
+            }
+
+            public override void OnError(Exception error)
+            {
+                try { observer.OnError(error); } finally { Dispose(); }
+            }
+
+            public override void OnCompleted()
+            {
+                try { observer.OnCompleted(); } finally { Dispose(); }
+            }
+        }
+    }
+
+    internal class DistinctObservable<T, TKey> : OperatorObservableBase<T>
+    {
+        readonly IObservable<T> source;
+        readonly IEqualityComparer<TKey> comparer;
+        readonly Func<T, TKey> keySelector;
+
+        public DistinctObservable(IObservable<T> source, Func<T, TKey> keySelector, IEqualityComparer<TKey> comparer)
+            : base(source.IsRequiredSubscribeOnCurrentThread())
+        {
+            this.source = source;
+            this.comparer = comparer;
+            this.keySelector = keySelector;
+        }
+
+        protected override IDisposable SubscribeCore(IObserver<T> observer, IDisposable cancel)
+        {
+            return source.Subscribe(new Distinct(this, observer, cancel));
+        }
+
+        class Distinct : OperatorObserverBase<T, T>
+        {
+            readonly DistinctObservable<T, TKey> parent;
+            readonly HashSet<TKey> hashSet;
+
+            public Distinct(DistinctObservable<T, TKey> parent, IObserver<T> observer, IDisposable cancel)
+                : base(observer, cancel)
+            {
+                this.parent = parent;
+                hashSet = (parent.comparer == null)
+                    ? new HashSet<TKey>()
+                    : new HashSet<TKey>(parent.comparer);
+            }
+
+            public override void OnNext(T value)
+            {
+                var key = default(TKey);
+                var isAdded = false;
+                try
+                {
+                    key = parent.keySelector(value);
+                    isAdded = hashSet.Add(key);
+                }
+                catch (Exception exception)
+                {
+                    try { observer.OnError(exception); } finally { Dispose(); }
+                    return;
+                }
+
+                if (isAdded)
+                {
+                    observer.OnNext(value);
+                }
+            }
+
+            public override void OnError(Exception error)
+            {
+                try { observer.OnError(error); } finally { Dispose(); }
+            }
+
+            public override void OnCompleted()
+            {
+                try { observer.OnCompleted(); } finally { Dispose(); }
+            }
+        }
+    }
+}