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96 lines
3.3 KiB
96 lines
3.3 KiB
#if NET20 || NET30 || NET35 || !NET_4_6 |
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using System.Diagnostics.Contracts; |
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namespace System.Threading.Tasks |
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{ |
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public partial class Task<TResult> : Task |
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{ |
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internal TResult InternalResult; |
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static Task() |
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{ |
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ContinuationConvertion = done => (Task<TResult>)done.Result; |
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} |
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public Task(Func<TResult> function) |
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: base(function, null, null, default(CancellationToken), TaskCreationOptions.None, InternalTaskOptions.None, TaskScheduler.Default) |
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{ |
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// Empty |
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} |
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public Task(Func<TResult> function, CancellationToken cancellationToken) |
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: base(function, null, null, cancellationToken, TaskCreationOptions.None, InternalTaskOptions.None, TaskScheduler.Default) |
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{ |
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// Empty |
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} |
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public Task(Func<TResult> function, TaskCreationOptions creationOptions) |
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: base(function, null, null, default(CancellationToken), creationOptions, InternalTaskOptions.None, TaskScheduler.Default) |
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{ |
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// Empty |
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} |
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public Task(Func<TResult> function, CancellationToken cancellationToken, TaskCreationOptions creationOptions) |
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: base(function, null, null, cancellationToken, creationOptions, InternalTaskOptions.None, TaskScheduler.Default) |
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{ |
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// Empty |
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} |
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internal Task(Func<TResult> function, CancellationToken cancellationToken, TaskCreationOptions creationOptions, TaskScheduler scheduler) |
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: base(function, null, null, cancellationToken, creationOptions, InternalTaskOptions.None, scheduler) |
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{ |
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// Empty |
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} |
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internal Task(Func<object, TResult> function, object state, CancellationToken cancellationToken, TaskCreationOptions creationOptions, TaskScheduler scheduler) |
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: base(function, state, null, cancellationToken, creationOptions, InternalTaskOptions.None, scheduler) |
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{ |
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// Empty |
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} |
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internal Task(Delegate function, object state, Task parent, CancellationToken cancellationToken, TaskCreationOptions creationOptions, InternalTaskOptions internalOptions, TaskScheduler scheduler) |
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: base(function, state, parent, cancellationToken, creationOptions, internalOptions, scheduler) |
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{ |
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// Empty |
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} |
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public TResult Result |
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{ |
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get |
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{ |
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Wait(); |
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if (IsFaulted) |
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{ |
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throw Exception; |
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} |
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if (IsCanceled) |
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{ |
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throw new AggregateException(new TaskCanceledException(this)); |
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} |
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return InternalResult; |
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} |
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} |
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internal static Func<Task<Task>, Task<TResult>> ContinuationConvertion { get; private set; } |
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internal override void InnerInvoke() |
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{ |
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var action = Action as Func<TResult>; |
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if (action != null) |
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{ |
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InternalResult = action(); |
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return; |
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} |
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var withState = Action as Func<object, TResult>; |
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if (withState != null) |
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{ |
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InternalResult = withState(State); |
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return; |
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} |
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Contract.Assert(false, "Invalid Action in Task"); |
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} |
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} |
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} |
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#endif |