UniRx 에셋 추가

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

@@ -0,0 +1,77 @@
+using System;
+
+namespace UniRx.Operators
+{
+    // Optimize for .Select().Where()
+
+    internal class SelectWhereObservable<T, TR> : OperatorObservableBase<TR>
+    {
+        readonly IObservable<T> source;
+        readonly Func<T, TR> selector;
+        readonly Func<TR, bool> predicate;
+
+        public SelectWhereObservable(IObservable<T> source, Func<T, TR> selector, Func<TR, bool> predicate)
+            : base(source.IsRequiredSubscribeOnCurrentThread())
+        {
+            this.source = source;
+            this.selector = selector;
+            this.predicate = predicate;
+        }
+
+        protected override IDisposable SubscribeCore(IObserver<TR> observer, IDisposable cancel)
+        {
+            return source.Subscribe(new SelectWhere(this, observer, cancel));
+        }
+
+        class SelectWhere : OperatorObserverBase<T, TR>
+        {
+            readonly SelectWhereObservable<T, TR> parent;
+
+            public SelectWhere(SelectWhereObservable<T, TR> parent, IObserver<TR> observer, IDisposable cancel)
+                : base(observer, cancel)
+            {
+                this.parent = parent;
+            }
+
+            public override void OnNext(T value)
+            {
+                var v = default(TR);
+                try
+                {
+                    v = parent.selector(value);
+                }
+                catch (Exception ex)
+                {
+                    try { observer.OnError(ex); } finally { Dispose(); }
+                    return;
+                }
+
+                var isPassed = false;
+                try
+                {
+                    isPassed = parent.predicate(v);
+                }
+                catch (Exception ex)
+                {
+                    try { observer.OnError(ex); } finally { Dispose(); }
+                    return;
+                }
+
+                if (isPassed)
+                {
+                    observer.OnNext(v);
+                }
+            }
+
+            public override void OnError(Exception error)
+            {
+                try { observer.OnError(error); } finally { Dispose(); }
+            }
+
+            public override void OnCompleted()
+            {
+                try { observer.OnCompleted(); } finally { Dispose(); }
+            }
+        }
+    }
+}