annotate Implab/FuncChainTaskT.cs @ 245:b904e0a3ba72 v3

working on promises
author cin
date Fri, 26 Jan 2018 04:13:34 +0300
parents 40d7fed4a09e
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
145
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
1 using System;
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
2
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
3 namespace Implab {
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
4 public class FuncChainTask<TArg,TResult> : FuncChainTaskBase<TResult>, IDeferred<TArg> {
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
5 readonly Func<TArg, IPromise<TResult>> m_task;
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
6
149
eb793fbbe4ea fixed promises cancellation
cin
parents: 145
diff changeset
7 public FuncChainTask(Func<TArg, IPromise<TResult>> task, Func<Exception, IPromise<TResult>> error, Func<Exception, IPromise<TResult>> cancel, bool autoCancellable) : base(error, cancel, autoCancellable){
145
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
8 m_task = task;
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
9 }
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
10
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
11 public void Resolve(TArg value) {
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
12 if (m_task != null && LockCancelation()) {
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
13 try {
149
eb793fbbe4ea fixed promises cancellation
cin
parents: 145
diff changeset
14 var operation = m_task(value);
eb793fbbe4ea fixed promises cancellation
cin
parents: 145
diff changeset
15 operation.On(SetResult, HandleErrorInternal, SetCancelled);
eb793fbbe4ea fixed promises cancellation
cin
parents: 145
diff changeset
16 CancellationRequested(operation.Cancel);
145
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
17 } catch (Exception err) {
196
40d7fed4a09e fixed promise chaining behavior, the error handler doesn't handle result or cancellation handlers exceptions these exceptions are propagated to the next handlers.
cin
parents: 187
diff changeset
18 SetErrorInternal(err);
145
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
19 }
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
20 }
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
21 }
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
22 }
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
23 }