annotate Implab/PromiseFuncReaction`2.cs @ 260:547a2fc0d93e v3 v3.0.6

minor fixes
author cin
date Fri, 13 Apr 2018 19:14:59 +0300
parents d82909310094
children
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1 using System;
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2 using System.Diagnostics;
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3
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4 namespace Implab {
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5 class PromiseFuncReaction<TIn, TRet> : IResolvable<TIn> {
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6 readonly Deferred<TRet> m_next;
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7
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8 readonly IDispatcher m_dispatcher;
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9
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10 readonly Action<TIn, Deferred<TRet>> m_fulfilled;
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11
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12 readonly Action<Exception, Deferred<TRet>> m_rejected;
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13
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14 public IPromise<TRet> Promise {
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15 get { return m_next.Promise; }
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16 }
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18 public PromiseFuncReaction(Action<TIn, Deferred<TRet>> fulfilled, Action<Exception, Deferred<TRet>> rejected, Deferred<TRet> next, IDispatcher dispatcher) {
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19 m_next = next;
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20 m_fulfilled = fulfilled;
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21 m_rejected = rejected;
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22 m_dispatcher = dispatcher;
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23 }
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24
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25 public void Resolve(TIn result) {
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26 if (m_fulfilled != null) {
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27 if (m_dispatcher != null)
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28 m_dispatcher.Enqueue(ResolveImpl, result);
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29 else
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30 ResolveImpl(result);
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31 } else {
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32 try {
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33 m_next.Resolve((TRet)(object)result);
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34 } catch(Exception error) {
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35 // handle cast exceptions
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36 m_next.Reject(error);
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37 }
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38 }
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39 }
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40
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41 void ResolveImpl (TIn result) {
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42 m_fulfilled(result, m_next);
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43 }
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44
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45 public void Reject(Exception error) {
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46 if (m_fulfilled != null) {
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47 if (m_dispatcher != null)
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48 m_dispatcher.Enqueue(RejectImpl, error);
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49 else
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50 RejectImpl(error);
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51 } else {
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52 m_next.Reject(error);
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53 }
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54 }
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56 void RejectImpl(Exception error) {
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57 m_rejected(error, m_next);
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58 }
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59
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61 public static PromiseFuncReaction<TIn,TRet> Create(Func<TIn,TRet> fulfilled, Func<Exception, TRet> rejected, IDispatcher dispatcher) {
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62 return new PromiseFuncReaction<TIn,TRet>(
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63 fulfilled != null ? PromiseHandler.Create(fulfilled) : null,
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64 rejected != null ? PromiseHandler.Create(rejected) : null,
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65 new Deferred<TRet>(),
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66 dispatcher
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67 );
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68 }
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70 public static PromiseFuncReaction<TIn,TRet> Create(Func<TIn,IPromise<TRet>> fulfilled, Func<Exception, TRet> rejected, IDispatcher dispatcher) {
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71 return new PromiseFuncReaction<TIn,TRet>(
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72 fulfilled != null ? PromiseHandler.Create(fulfilled) : null,
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73 rejected != null ? PromiseHandler.Create(rejected) : null,
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74 new Deferred<TRet>(),
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75 dispatcher
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76 );
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77 }
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79 public static PromiseFuncReaction<TIn,TRet> Create(Func<TIn,TRet> fulfilled, Func<Exception, IPromise<TRet>> rejected, IDispatcher dispatcher) {
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80 return new PromiseFuncReaction<TIn,TRet>(
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81 fulfilled != null ? PromiseHandler.Create(fulfilled) : null,
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82 rejected != null ? PromiseHandler.Create(rejected) : null,
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83 new Deferred<TRet>(),
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84 dispatcher
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85 );
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86 }
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87
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88 public static PromiseFuncReaction<TIn,TRet> Create(Func<TIn,IPromise<TRet>> fulfilled, Func<Exception, IPromise<TRet>> rejected, IDispatcher dispatcher) {
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89 return new PromiseFuncReaction<TIn,TRet>(
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90 fulfilled != null ? PromiseHandler.Create(fulfilled) : null,
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91 rejected != null ? PromiseHandler.Create(rejected) : null,
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92 new Deferred<TRet>(),
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93 dispatcher
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94 );
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95 }
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96 }
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97 }