UniRx 에셋 추가

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

@@ -0,0 +1,82 @@
+using System;
+
+namespace UniRx.Operators
+{
+    internal class StartWithObservable<T> : OperatorObservableBase<T>
+    {
+        readonly IObservable<T> source;
+        readonly T value;
+        readonly Func<T> valueFactory;
+
+        public StartWithObservable(IObservable<T> source, T value)
+            : base(source.IsRequiredSubscribeOnCurrentThread())
+        {
+            this.source = source;
+            this.value = value;
+        }
+
+        public StartWithObservable(IObservable<T> source, Func<T> valueFactory)
+            : base(source.IsRequiredSubscribeOnCurrentThread())
+        {
+            this.source = source;
+            this.valueFactory = valueFactory;
+        }
+
+        protected override IDisposable SubscribeCore(IObserver<T> observer, IDisposable cancel)
+        {
+            return new StartWith(this, observer, cancel).Run();
+        }
+
+        class StartWith : OperatorObserverBase<T, T>
+        {
+            readonly StartWithObservable<T> parent;
+
+            public StartWith(StartWithObservable<T> parent, IObserver<T> observer, IDisposable cancel) : base(observer, cancel)
+            {
+                this.parent = parent;
+            }
+
+            public IDisposable Run()
+            {
+                T t;
+                if (parent.valueFactory == null)
+                {
+                    t = parent.value;
+                }
+                else
+                {
+                    try
+                    {
+                        t = parent.valueFactory();
+                    }
+                    catch (Exception ex)
+                    {
+                        try { observer.OnError(ex); }
+                        finally { Dispose(); }
+                        return Disposable.Empty;
+                    }
+                }
+
+                OnNext(t);
+                return parent.source.Subscribe(base.observer); // good bye StartWithObserver
+            }
+
+            public override void OnNext(T value)
+            {
+                base.observer.OnNext(value);
+            }
+
+            public override void OnError(Exception error)
+            {
+                try { observer.OnError(error); }
+                finally { Dispose(); }
+            }
+
+            public override void OnCompleted()
+            {
+                try { observer.OnCompleted(); }
+                finally { Dispose(); }
+            }
+        }
+    }
+}