Mercurial > pub > ImplabNet
annotate Implab/AbstractPromise.cs @ 242:cbe10ac0731e v3
Working on promises
| author | cin |
|---|---|
| date | Wed, 24 Jan 2018 03:03:21 +0300 |
| parents | 86187b01c4e0 |
| children | b1e0ffdf3451 |
| rev | line source |
|---|---|
| 119 | 1 using System; |
| 2 using Implab.Parallels; | |
| 3 | |
| 4 namespace Implab { | |
| 144 | 5 public abstract class AbstractPromise : AbstractEvent<AbstractPromise.HandlerDescriptor>, IPromise { |
| 242 | 6 public class HandlerDescriptor { |
| 144 | 7 readonly Action m_handler; |
| 8 readonly Action<Exception> m_error; | |
| 242 | 9 public HandlerDescriptor(Action success, Action<Exception> error) { |
| 144 | 10 m_handler = success; |
| 11 m_error = error; | |
| 12 } | |
| 119 | 13 |
| 144 | 14 public void SignalSuccess() { |
| 242 | 15 if (m_handler != null) { |
| 144 | 16 try { |
| 17 m_handler(); | |
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18 // Analysis disable once EmptyGeneralCatchClause |
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19 } catch { |
| 144 | 20 } |
| 21 } | |
| 22 } | |
| 119 | 23 |
| 144 | 24 public void SignalError(Exception err) { |
| 25 if (m_error != null) { | |
| 26 try { | |
| 27 m_error(err); | |
| 28 // Analysis disable once EmptyGeneralCatchClause | |
| 29 } catch { | |
| 30 } | |
| 31 } | |
| 119 | 32 } |
| 33 } | |
| 34 | |
| 35 | |
| 144 | 36 #region implemented abstract members of AbstractPromise |
| 119 | 37 |
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38 protected override void SignalHandler(HandlerDescriptor handler, int signal) { |
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39 switch (signal) { |
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40 case SUCCEEDED_STATE: |
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41 handler.SignalSuccess(); |
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42 break; |
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43 case REJECTED_STATE: |
| 242 | 44 handler.SignalError(RejectReason); |
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45 break; |
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46 default: |
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47 throw new InvalidOperationException(String.Format("Invalid promise signal: {0}", signal)); |
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48 } |
| 119 | 49 } |
| 50 | |
| 242 | 51 protected override Signal GetFulfillSignal() { |
| 144 | 52 var signal = new Signal(); |
| 242 | 53 On(signal.Set, e => signal.Set()); |
| 145 | 54 return signal; |
| 119 | 55 } |
| 56 | |
| 57 #endregion | |
| 58 | |
| 242 | 59 public Type ResultType { |
| 144 | 60 get { |
| 61 return typeof(void); | |
| 119 | 62 } |
| 63 } | |
| 64 | |
| 242 | 65 public void On(Action success, Action<Exception> error) { |
| 66 AddHandler(new HandlerDescriptor(success, error)); | |
| 144 | 67 } |
| 119 | 68 |
| 144 | 69 public IPromise<T> Cast<T>() { |
| 70 throw new InvalidCastException(); | |
| 119 | 71 } |
| 72 | |
| 73 public void Join() { | |
| 74 WaitResult(-1); | |
| 75 } | |
| 76 | |
| 144 | 77 public void Join(int timeout) { |
| 78 WaitResult(timeout); | |
| 119 | 79 } |
| 80 | |
| 144 | 81 protected void SetResult() { |
| 186 | 82 if(BeginSetResult()) |
| 83 EndSetResult(); | |
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84 } |
| 119 | 85 } |
| 86 } | |
| 87 |