[WIP] firebase init Error

sdk-intergration/LocalPackages/com.neuecc.unirx/Scripts/Operators/ToList.cs

@@ -0,0 +1,55 @@
+using System;
+using System.Collections.Generic;
+
+namespace UniRx.Operators
+{
+    internal class ToListObservable<TSource> : OperatorObservableBase<IList<TSource>>
+    {
+        readonly IObservable<TSource> source;
+
+        public ToListObservable(IObservable<TSource> source)
+            : base(source.IsRequiredSubscribeOnCurrentThread())
+        {
+            this.source = source;
+        }
+
+        protected override IDisposable SubscribeCore(IObserver<IList<TSource>> observer, IDisposable cancel)
+        {
+            return source.Subscribe(new ToList(observer, cancel));
+        }
+
+        class ToList : OperatorObserverBase<TSource, IList<TSource>>
+        {
+            readonly List<TSource> list = new List<TSource>();
+
+            public ToList(IObserver<IList<TSource>> observer, IDisposable cancel)
+                : base(observer, cancel)
+            {
+            }
+
+            public override void OnNext(TSource value)
+            {
+                try
+                {
+                    list.Add(value); // sometimes cause error on multithread
+                }
+                catch (Exception ex)
+                {
+                    try { observer.OnError(ex); } finally { Dispose(); }
+                    return;
+                }
+            }
+
+            public override void OnError(Exception error)
+            {
+                try { observer.OnError(error); } finally { Dispose(); }
+            }
+
+            public override void OnCompleted()
+            {
+                base.observer.OnNext(list);
+                try { observer.OnCompleted(); } finally { Dispose(); };
+            }
+        }
+    }
+}