UniRx 에셋 추가
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139
Gameton-06/Assets/Plugins/UniRx/Scripts/Operators/Scan.cs
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139
Gameton-06/Assets/Plugins/UniRx/Scripts/Operators/Scan.cs
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using System;
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using UniRx.Operators;
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namespace UniRx.Operators
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{
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internal class ScanObservable<TSource> : OperatorObservableBase<TSource>
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{
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readonly IObservable<TSource> source;
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readonly Func<TSource, TSource, TSource> accumulator;
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public ScanObservable(IObservable<TSource> source, Func<TSource, TSource, TSource> accumulator)
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: base(source.IsRequiredSubscribeOnCurrentThread())
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{
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this.source = source;
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this.accumulator = accumulator;
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}
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protected override IDisposable SubscribeCore(IObserver<TSource> observer, IDisposable cancel)
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{
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return source.Subscribe(new Scan(this, observer, cancel));
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}
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class Scan : OperatorObserverBase<TSource, TSource>
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{
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readonly ScanObservable<TSource> parent;
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TSource accumulation;
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bool isFirst;
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public Scan(ScanObservable<TSource> parent, IObserver<TSource> observer, IDisposable cancel) : base(observer, cancel)
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{
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this.parent = parent;
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this.isFirst = true;
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}
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public override void OnNext(TSource value)
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{
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if (isFirst)
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{
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isFirst = false;
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accumulation = value;
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}
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else
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{
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try
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{
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accumulation = parent.accumulator(accumulation, value);
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}
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catch (Exception ex)
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{
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try { observer.OnError(ex); }
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finally { Dispose(); }
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return;
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}
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}
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observer.OnNext(accumulation);
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}
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public override void OnError(Exception error)
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{
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try { observer.OnError(error); }
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finally { Dispose(); }
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}
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public override void OnCompleted()
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{
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try { observer.OnCompleted(); }
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finally { Dispose(); }
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}
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}
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}
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internal class ScanObservable<TSource, TAccumulate> : OperatorObservableBase<TAccumulate>
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{
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readonly IObservable<TSource> source;
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readonly TAccumulate seed;
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readonly Func<TAccumulate, TSource, TAccumulate> accumulator;
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public ScanObservable(IObservable<TSource> source, TAccumulate seed, Func<TAccumulate, TSource, TAccumulate> accumulator)
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: base(source.IsRequiredSubscribeOnCurrentThread())
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{
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this.source = source;
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this.seed = seed;
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this.accumulator = accumulator;
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}
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protected override IDisposable SubscribeCore(IObserver<TAccumulate> observer, IDisposable cancel)
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{
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return source.Subscribe(new Scan(this, observer, cancel));
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}
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class Scan : OperatorObserverBase<TSource, TAccumulate>
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{
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readonly ScanObservable<TSource, TAccumulate> parent;
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TAccumulate accumulation;
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bool isFirst;
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public Scan(ScanObservable<TSource, TAccumulate> parent, IObserver<TAccumulate> observer, IDisposable cancel) : base(observer, cancel)
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{
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this.parent = parent;
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this.isFirst = true;
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}
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public override void OnNext(TSource value)
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{
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if (isFirst)
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{
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isFirst = false;
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accumulation = parent.seed;
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}
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try
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{
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accumulation = parent.accumulator(accumulation, value);
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}
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catch (Exception ex)
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{
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try { observer.OnError(ex); }
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finally { Dispose(); }
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return;
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}
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observer.OnNext(accumulation);
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}
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public override void OnError(Exception error)
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{
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try { observer.OnError(error); }
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finally { Dispose(); }
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}
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public override void OnCompleted()
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{
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try { observer.OnCompleted(); }
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finally { Dispose(); }
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}
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}
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}
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}
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