implab/ImplabNet Files · Implab/PromiseExtensions.cs

improved performance of a chained map operation

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             PromiseExtensions.cs
        
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             / Implab / PromiseExtensions.cs
          
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        cin
    
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      using System.Threading;

        cin
    
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      using System;

      #if NET_4_5

      using System.Threading.Tasks;

      #endif

        cin
    
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      namespace Implab {

          public static class PromiseExtensions {

              public static IPromise<T> DispatchToCurrentContext<T>(this IPromise<T> that) {

        cin
    
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                  Safe.ArgumentNotNull(that, "that");

        cin
    
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                  var context = SynchronizationContext.Current;

                  if (context == null)

                      return that;

                  var p = new SyncContextPromise<T>(context, that, true);

        cin
    
Refactoring of the IPromise<T> interface...

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                  that.Last(

                      p.Resolve,

                      p.Reject,

                      p.Cancel

        cin
    
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                  );

                  return p;

              }

              public static IPromise<T> DispatchToContext<T>(this IPromise<T> that, SynchronizationContext context) {

        cin
    
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                  Safe.ArgumentNotNull(that, "that");

        cin
    
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                  Safe.ArgumentNotNull(context, "context");

                  var p = new SyncContextPromise<T>(context, that, true);

        cin
    
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                  that.Last(

                      p.Resolve,

                      p.Reject,

                      p.Cancel

        cin
    
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                  );

                  return p;

              }

        cin
    
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              public static AsyncCallback AsyncCallback<T>(this Promise<T> that, Func<IAsyncResult,T> callback) {

                  Safe.ArgumentNotNull(that, "that");

                  Safe.ArgumentNotNull(callback, "callback");

                  return ar => {

                      try {

                          that.Resolve(callback(ar));

                      } catch (Exception err) {

                          that.Reject(err);

                      }

                  };

              }

              #if NET_4_5

              public static Task<T> GetTask<T>(this IPromise<T> that) {

                  Safe.ArgumentNotNull(that, "that");

                  var tcs = new TaskCompletionSource<T>();

                  that.Last(tcs.SetResult, tcs.SetException, tcs.SetCanceled);

                  return tcs.Task;

              }

              #endif

        cin
    
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          }

      }

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cin promises refactoring	r72	using System.Threading;
cin major refactoring, added tasks support	r75	using System;
		#if NET_4_5
		using System.Threading.Tasks;
		#endif
cin promises refactoring	r72
		namespace Implab {
		public static class PromiseExtensions {
		public static IPromise<T> DispatchToCurrentContext<T>(this IPromise<T> that) {
cin major refactoring, added tasks support	r75	Safe.ArgumentNotNull(that, "that");
cin promises refactoring	r72	var context = SynchronizationContext.Current;
		if (context == null)
		return that;

		var p = new SyncContextPromise<T>(context, that, true);

cin Refactoring of the IPromise<T> interface...	r76	that.Last(
		p.Resolve,
		p.Reject,
		p.Cancel
cin promises refactoring	r72	);
		return p;
		}

		public static IPromise<T> DispatchToContext<T>(this IPromise<T> that, SynchronizationContext context) {
cin major refactoring, added tasks support	r75	Safe.ArgumentNotNull(that, "that");
cin promises refactoring	r72	Safe.ArgumentNotNull(context, "context");

		var p = new SyncContextPromise<T>(context, that, true);

cin Refactoring of the IPromise<T> interface...	r76	that.Last(
		p.Resolve,
		p.Reject,
		p.Cancel
cin promises refactoring	r72	);
		return p;
		}
cin major refactoring, added tasks support	r75
		public static AsyncCallback AsyncCallback<T>(this Promise<T> that, Func<IAsyncResult,T> callback) {
		Safe.ArgumentNotNull(that, "that");
		Safe.ArgumentNotNull(callback, "callback");
		return ar => {
		try {
		that.Resolve(callback(ar));
		} catch (Exception err) {
		that.Reject(err);
		}
		};
		}

		#if NET_4_5

		public static Task<T> GetTask<T>(this IPromise<T> that) {
		Safe.ArgumentNotNull(that, "that");
		var tcs = new TaskCompletionSource<T>();

		that.Last(tcs.SetResult, tcs.SetException, tcs.SetCanceled);

		return tcs.Task;
		}

		#endif
cin promises refactoring	r72	}
		}