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annotate Implab/FuncTaskBase.cs @ 203:4d9830a9bbb8 v2

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Added 'Fail' method to RunnableComponent which allows component to move from Running to Failed state. Added PollingComponent a timer based runnable component More tests Added FailPromise a thin class to wrap exceptions Fixed error handling in SuccessPromise classes.
author cin
date Tue, 18 Oct 2016 17:49:54 +0300
parents 40d7fed4a09e
children
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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 FuncTaskBase<TResult> : AbstractTask<TResult> {
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5 readonly Func<Exception, TResult> m_cancel;
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6 readonly Func<Exception, TResult> m_error;
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7
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8 protected FuncTaskBase( Func<Exception, TResult> error, Func<Exception, TResult> cancel, bool autoCancellable) {
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9 m_error = error;
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10 m_cancel = cancel;
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11 if (autoCancellable)
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12 CancellationRequested(CancelOperation);
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13 }
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15 public void Reject(Exception error) {
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16 Safe.ArgumentNotNull(error, "error");
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17 if (LockCancelation())
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18 HandleErrorInternal(error);
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19 }
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21 protected void HandleErrorInternal(Exception error) {
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22 if (m_error != null) {
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23 try {
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24 SetResult(m_error(error));
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25 } catch(Exception err) {
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26 SetErrorInternal(err);
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27 }
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28 } else {
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29 SetErrorInternal(error);
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30 }
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31 }
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33 public override void CancelOperation(Exception reason) {
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34 if (LockCancelation())
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35 HandleCancelInternal(reason);
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36 }
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38 protected void HandleCancelInternal(Exception reason) {
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39 if (m_cancel != null) {
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40 try {
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41 SetResult(m_cancel(reason));
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42 } catch (Exception err) {
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43 SetErrorInternal(err);
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44 }
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45 } else {
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46 SetCancelledInternal(reason);
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47 }
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48 }
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50 }
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51 }
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