Mercurial > pub > ImplabNet

annotate Implab/FuncChainTask.cs @ 187:dd4a3590f9c6 ref20160224

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Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler Any unhandled OperationCanceledException will cause the promise cancelation
author cin
date Tue, 19 Apr 2016 17:35:20 +0300
parents eb793fbbe4ea
children 40d7fed4a09e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 using System;
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2
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3 namespace Implab {
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4 public class FuncChainTask<TResult> : FuncChainTaskBase<TResult>, IDeferred {
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5 readonly Func<IPromise<TResult>> m_task;
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6
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7 public FuncChainTask(Func<IPromise<TResult>> task, Func<Exception, IPromise<TResult>> error, Func<Exception, IPromise<TResult>> cancel, bool autoCancellable)
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8 : base(error, cancel, autoCancellable) {
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9 m_task = task;
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10 }
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11
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12 public void Resolve() {
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13 if (m_task != null && LockCancelation()) {
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14 try {
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15 var operation = m_task();
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16 operation.On(SetResult, HandleErrorInternal, HandleCancelInternal);
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17 CancellationRequested(operation.Cancel);
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18 } catch (OperationCanceledException reason) {
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19 HandleCancelInternal(reason);
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20 } catch (Exception err) {
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21 HandleErrorInternal(err);
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22 }
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23 }
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24 }
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25 }
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26 }