implab/ImplabNet Files · Implab/Deferred`1.cs

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             Deferred`1.cs
        
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             / Implab / Deferred`1.cs
          
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      using System;

      using System.Diagnostics;

      namespace Implab {

          public class Deferred<T> : IResolvable<T> {

              readonly Promise<T> m_promise;

              internal Deferred() {

                  m_promise = new Promise<T>();

              }

              protected Deferred(Promise<T> promise) {

                  Debug.Assert(promise != null);

                  m_promise = promise;

              }

              public IPromise<T> Promise {

                  get { return m_promise; }

              }

              public void Cancel() {

                  Reject(new OperationCanceledException());

              }

              public virtual void Reject(Exception error) {

                  if (error is PromiseTransientException)

                      error = ((PromiseTransientException)error).InnerException;

                  m_promise.RejectPromise(error);

              }

              public virtual void Resolve(T value) {

                  m_promise.ResolvePromise(value);

              }

              public virtual void Resolve(IPromise<T> thenable) {

                  if (thenable == null)

                      Reject(new Exception("The promise or task are expected"));

                  if (thenable == m_promise)

                      Reject(new Exception("The promise cannot be resolved with oneself"));

                  try {

                      thenable.Then(this);

                  } catch (Exception err) {

                      Reject(err);

                  }

              }

          }

      }

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				using System;
				using System.Diagnostics;

				namespace Implab {
				public class Deferred<T> : IResolvable<T> {
				readonly Promise<T> m_promise;

				internal Deferred() {
				m_promise = new Promise<T>();
				}

				protected Deferred(Promise<T> promise) {
				Debug.Assert(promise != null);
				m_promise = promise;
				}

				public IPromise<T> Promise {
				get { return m_promise; }
				}

				public void Cancel() {
				Reject(new OperationCanceledException());
				}

				public virtual void Reject(Exception error) {
				if (error is PromiseTransientException)
				error = ((PromiseTransientException)error).InnerException;

				m_promise.RejectPromise(error);
				}

				public virtual void Resolve(T value) {
				m_promise.ResolvePromise(value);
				}

				public virtual void Resolve(IPromise<T> thenable) {
				if (thenable == null)
				Reject(new Exception("The promise or task are expected"));
				if (thenable == m_promise)
				Reject(new Exception("The promise cannot be resolved with oneself"));

				try {
				thenable.Then(this);
				} catch (Exception err) {
				Reject(err);
				}
				}
				}
				}