implab/ImplabNet Commit - r101:279e226dffdd

code cleanup...

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r101:279e226dffdd v2

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r101:279e226dffdd

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Implab/IPromise.cs +10 -10

                     /// </summary>
                     bool IsCancelled { get; }
-                    IPromise Then(Action success, ErrorHandler error, Action cancel);
+                    IPromise Then(Action success, Action<Exception> error, Action cancel);
-                    IPromise Then(Action success, ErrorHandler error);
+                    IPromise Then(Action success, Action<Exception> error);
                     IPromise Then(Action success);
-                    IPromise Chain(Func<IPromise> chained, ErrorHandler<IPromise> error, Action cancel);
+                    IPromise Chain(Func<IPromise> chained, Func<Exception, IPromise> error, Action cancel);
-                    IPromise Chain(Func<IPromise> chained, ErrorHandler<IPromise> error);
+                    IPromise Chain(Func<IPromise> chained, Func<Exception, IPromise> error);
                     IPromise Chain(Func<IPromise> chained);
                     /// <summary>
                     /// <param name="success">Success.</param>
                     /// <param name="error">Error.</param>
                     /// <param name="cancel">Cancel.</param>
-                    void Last(Action success, ErrorHandler error, Action cancel);
+                    void Last(Action success, Action<Exception> error, Action cancel);
-                    void Last(Action success, ErrorHandler error);
+                    void Last(Action success, Action<Exception> error);
                     void Last(Action success);
-                    IPromise Error(ErrorHandler error);
+                    IPromise Error(Action<Exception> error);
                     /// <summary>
-                    /// Обрабатывает либо ошибку, либо результат. Событие отмены не обрабатывается.
+                    /// Обрабатывает либо ошибку, либо результат, либо отмену.
                     /// </summary>
                     /// <param name="handler">Обработчик.</param>
                     /// <remarks>После обработке ошибки, она передается дальше.</remarks>
                     /// <remarks>После обработке ошибки, она передается дальше.</remarks>
                     IPromise Anyway(Action handler);
                     /// <summary>
-                    /// Обработчик для регистрации отмены обещания, событие отмены не может быть подавлено.
+                    /// Обработчик для регистрации отмены обещания.
                     /// </summary>
-                    /// <returns>Новое обещание, связанное с текущим.</returns>
+                    /// <returns>Новое обещание, связанное с текущим, выполнится после указанного обработчика.</returns>
                     /// <param name="handler">Обработчик события.</param>
                     /// <remarks>Если обработчик вызывает исключение, то оно передается обработчику ошибки, результат работы
                     /// которого будет передан связанному обещанию</remarks>

Implab/IPromiseT.cs +13 -13

                     new T Join(int timeout);
-                    void Last(ResultHandler<T> success, ErrorHandler error, Action cancel);
+                    void Last(Action<T> success, Action<Exception> error, Action cancel);
-                    void Last(ResultHandler<T> success, ErrorHandler error);
+                    void Last(Action<T> success, Action<Exception> error);
-                    void Last(ResultHandler<T> success);
+                    void Last(Action<T> success);
-                    IPromise<T> Then(ResultHandler<T> success, ErrorHandler<T> error, Action cancel);
+                    IPromise<T> Then(Action<T> success, Func<Exception,T> error, Action cancel);
-                    IPromise<T> Then(ResultHandler<T> success, ErrorHandler<T> error);
+                    IPromise<T> Then(Action<T> success, Func<Exception,T> error);
-                    IPromise<T> Then(ResultHandler<T> success);
+                    IPromise<T> Then(Action<T> success);
-                    IPromise<T2> Then<T2>(ResultMapper<T, T2> mapper, ErrorHandler<T2> error, Action cancel);
+                    IPromise<T2> Then<T2>(Func<T, T2> mapper, Func<Exception,T2> error, Action cancel);
-                    IPromise<T2> Then<T2>(ResultMapper<T, T2> mapper, ErrorHandler<T2> error);
+                    IPromise<T2> Then<T2>(Func<T, T2> mapper, Func<Exception,T2> error);
-                    IPromise<T2> Then<T2>(ResultMapper<T, T2> mapper);
+                    IPromise<T2> Then<T2>(Func<T, T2> mapper);
-                    IPromise<T2> Chain<T2>(ResultMapper<T, IPromise<T2>> chained, ErrorHandler<IPromise<T2>> error, Action cancel);
+                    IPromise<T2> Chain<T2>(Func<T, IPromise<T2>> chained, Func<Exception,IPromise<T2>> error, Action cancel);
-                    IPromise<T2> Chain<T2>(ResultMapper<T, IPromise<T2>> chained, ErrorHandler<IPromise<T2>> error);
+                    IPromise<T2> Chain<T2>(Func<T, IPromise<T2>> chained, Func<Exception,IPromise<T2>> error);
-                    IPromise<T2> Chain<T2>(ResultMapper<T, IPromise<T2>> chained);
+                    IPromise<T2> Chain<T2>(Func<T, IPromise<T2>> chained);
-                    IPromise<T> Error(ErrorHandler<T> error);
+                    IPromise<T> Error(Func<Exception,T> error);
                     new IPromise<T> Cancelled(Action handler);

Implab/Parallels/ArrayTraits.cs +2 -5

             using Implab.Diagnostics;
             using System;
-            using System.Collections.Generic;
             using System.Diagnostics;
-            using System.Linq;
-            using System.Text;
             using System.Threading;
             namespace Implab.Parallels {
                         return iter.Promise;
                     }
-                    public static IPromise<TDst[]> ChainedMap<TSrc, TDst>(this TSrc[] source, ResultMapper<TSrc, IPromise<TDst>> transform, int threads) {
+                    public static IPromise<TDst[]> ChainedMap<TSrc, TDst>(this TSrc[] source, Func<TSrc, IPromise<TDst>> transform, int threads) {
                         if (source == null)
                             throw new ArgumentNullException("source");
                         if (transform == null)
                             throw new ArgumentNullException("transform");
                         if (threads <= 0)
-                            throw new ArgumentOutOfRangeException("Threads number must be greater then zero");
+                            throw new ArgumentOutOfRangeException("threads","Threads number must be greater then zero");
                         if (source.Length == 0)
                             return Promise<TDst[]>.ResultToPromise(new TDst[0]);

Implab/Promise.cs +56 -62

             using System;
             using System.Collections.Generic;
             using System.Reflection;
-            using System.Diagnostics;
             using System.Threading;
             using Implab.Parallels;
             namespace Implab {
-                public delegate void ErrorHandler(Exception e);
-                public delegate T ErrorHandler<out T>(Exception e);
-                public delegate void ResultHandler<in T>(T result);
-                public delegate TNew ResultMapper<in TSrc,out TNew>(TSrc result);
                 /// <summary>
                 /// Класс для асинхронного получения результатов. Так называемое "обещание".
                 /// </summary>
                 public class Promise<T> : IPromise<T> {
                     protected struct HandlerDescriptor {
-                        public ResultHandler<T> resultHandler;
+                        public Action<T> resultHandler;
-                        public ErrorHandler<T> errorHandler;
+                        public Func<Exception,T> errorHandler;
                         public Action cancellHandler;
                         public Promise<T> medium;
                     const int REJECTED_STATE = 3;
                     const int CANCELLED_STATE = 4;
-                    readonly bool m_cancellable;
+                    int m_childrenCount;
-                    int m_childrenCount = 0;
                     int m_state;
                     T m_result;
                     Exception m_error;
                     readonly MTQueue<HandlerDescriptor> m_handlers = new MTQueue<HandlerDescriptor>();
                     public Promise() {
-                        m_cancellable = true;
                     }
-                    public Promise(IPromise parent, bool cancellable) {
+                    public Promise(IPromise parent) {
-                        m_cancellable = cancellable;
                         if (parent != null)
                             AddHandler(
                                 null,
                     /// </summary>
                     /// <remarks>Для определения была ли операция отменена следует использовать свойство <see cref="IsCancelled"/>.</remarks>
                     public void Cancel() {
-                        if (m_cancellable && BeginTransit()) {
+                        if (BeginTransit()) {
                             CompleteTransit(CANCELLED_STATE);
                             OnStateChanged();
                         }
                     }
-                    public IPromise<T> Then(ResultHandler<T> success, ErrorHandler<T> error, Action cancel) {
+                    public IPromise<T> Then(Action<T> success, Func<Exception,T> error, Action cancel) {
                         if (success == null && error == null && cancel == null)
                             return this;
-                        var medium = new Promise<T>(this, true);
+                        var medium = new Promise<T>(this);
                         AddHandler(success, error, cancel, medium);
                     /// This handler will recieve an operation result as a parameter.</param>
                     /// <param name="error">Handles an exception that may occur during the operation and returns the value which will be used as the result of the operation.</param>
                     /// <returns>The new promise chained to this one.</returns>
-                    public IPromise<T> Then(ResultHandler<T> success, ErrorHandler<T> error) {
+                    public IPromise<T> Then(Action<T> success, Func<Exception,T> error) {
                         if (success == null && error == null)
                             return this;
-                        var medium = new Promise<T>(this, true);
+                        var medium = new Promise<T>(this);
                         AddHandler(success, error, null, medium);
-                    public IPromise<T> Then(ResultHandler<T> success) {
+                    public IPromise<T> Then(Action<T> success) {
                         if (success == null)
                             return this;
-                        var medium = new Promise<T>(this, true);
+                        var medium = new Promise<T>(this);
                         AddHandler(success, null, null, medium);
                     /// всей цепи обещаний снизу (с самого последнего обещания).
                     /// </para>
                     /// </remarks>
-                    public void Last(ResultHandler<T> success, ErrorHandler error, Action cancel) {
+                    public void Last(Action<T> success, Action<Exception> error, Action cancel) {
                         if (success == null && error == null && cancel == null)
                             return;
-                        ErrorHandler<T> errorHandler = null;
+                        Func<Exception,T> errorHandler = null;
                         if (error != null)
                             errorHandler = err => {
                                 error(err);
                         AddHandler(success, errorHandler, cancel, null);
                     }
-                    public void Last(ResultHandler<T> success, ErrorHandler error) {
+                    public void Last(Action<T> success, Action<Exception> error) {
                         Last(success, error, null);
                     }
-                    public void Last(ResultHandler<T> success) {
+                    public void Last(Action<T> success) {
                         Last(success, null, null);
                     }
-                    public IPromise Error(ErrorHandler error) {
+                    public IPromise Error(Action<Exception> error) {
                         if (error == null)
                             return this;
-                        var medium = new Promise<T>(this, true);
+                        var medium = new Promise<T>(this);
                         AddHandler(
                             null,
                     /// </remarks>
                     /// <param name="handler">The error handler which returns the result of the promise.</param>
                     /// <returns>New promise.</returns>
-                    public IPromise<T> Error(ErrorHandler<T> handler) {
+                    public IPromise<T> Error(Func<Exception,T> handler) {
                         if (handler == null)
                             return this;
-                        var medium = new Promise<T>(this, true);
+                        var medium = new Promise<T>(this);
                         AddHandler(null, handler, null, medium);
                     /// исключение возникшее при выполнении операции.</param>
                     /// <returns>Новое обещание, которое будет выполнено при выполнении исходного обещания.</returns>
                     /// <param name = "cancel"></param>
-                    public IPromise<TNew> Then<TNew>(ResultMapper<T, TNew> mapper, ErrorHandler<TNew> error, Action cancel) {
+                    public IPromise<TNew> Then<TNew>(Func<T, TNew> mapper, Func<Exception,TNew> error, Action cancel) {
                         Safe.ArgumentNotNull(mapper, "mapper");
                         // создаем прицепленное обещание
-                        var medium = new Promise<TNew>(this, true);
+                        var medium = new Promise<TNew>(this);
-                        ResultHandler<T> resultHandler = result => medium.Resolve(mapper(result));
+                        Action<T> resultHandler = result => medium.Resolve(mapper(result));
-                        ErrorHandler<T> errorHandler;
+                        Func<Exception,T> errorHandler;
                         if (error != null)
                             errorHandler = e => {
                                 try {
                         return medium;
                     }
-                    public IPromise<TNew> Then<TNew>(ResultMapper<T, TNew> mapper, ErrorHandler<TNew> error) {
+                    public IPromise<TNew> Then<TNew>(Func<T, TNew> mapper, Func<Exception,TNew> error) {
                         return Then(mapper, error, null);
                     }
-                    public IPromise<TNew> Then<TNew>(ResultMapper<T, TNew> mapper) {
+                    public IPromise<TNew> Then<TNew>(Func<T, TNew> mapper) {
                         return Then(mapper, null, null);
                     }
                     /// исключение возникшее при выполнении текуещй операции.</param>
                     /// <returns>Новое обещание, которое будет выполнено по окончанию указанной аснхронной операции.</returns>
                     /// <param name = "cancel"></param>
-                    public IPromise<TNew> Chain<TNew>(ResultMapper<T, IPromise<TNew>> chained, ErrorHandler<IPromise<TNew>> error, Action cancel) {
+                    public IPromise<TNew> Chain<TNew>(Func<T, IPromise<TNew>> chained, Func<Exception,IPromise<TNew>> error, Action cancel) {
                         Safe.ArgumentNotNull(chained, "chained");
                         // создать посредника, к которому будут подвызяваться следующие обработчики.
                         // когда будет выполнена реальная асинхронная операция, она обратиться к посреднику, чтобы
                         // передать через него результаты работы.
-                        var medium = new Promise<TNew>(this, true);
+                        var medium = new Promise<TNew>(this);
-                        ResultHandler<T> resultHandler = delegate(T result) {
+                        Action<T> resultHandler = delegate(T result) {
                             if (medium.IsCancelled)
                                 return;
                             // notify chained operation that it's not needed anymore
                             // порядок вызова Then, Cancelled важен, поскольку от этого
                             // зависит IsExclusive
-                            medium.Cancelled(() => {
+                            medium.Last(
-                                if (promise.IsExclusive)
+                                null,
-                                    promise.Cancel();
+                                null,
-                            });
+                                () => {
+                                    if (promise.IsExclusive)
+                                        promise.Cancel();
+                                }
+                            );
                         };
-                        ErrorHandler<T> errorHandler;
+                        Func<Exception,T> errorHandler;
                         if (error != null)
                             errorHandler = delegate(Exception e) {
                         return medium;
                     }
-                    public IPromise<TNew> Chain<TNew>(ResultMapper<T, IPromise<TNew>> chained, ErrorHandler<IPromise<TNew>> error) {
+                    public IPromise<TNew> Chain<TNew>(Func<T, IPromise<TNew>> chained, Func<Exception,IPromise<TNew>> error) {
                         return Chain(chained, error, null);
                     }
-                    public IPromise<TNew> Chain<TNew>(ResultMapper<T, IPromise<TNew>> chained) {
+                    public IPromise<TNew> Chain<TNew>(Func<T, IPromise<TNew>> chained) {
                         return Chain(chained, null, null);
                     }
                     public IPromise<T> Cancelled(Action handler) {
-                        var medium = new Promise<T>(this,true);
+                        var medium = new Promise<T>(this);
                         AddHandler(null, null, handler, medium);
                         return medium;
                     }
                         return Join(Timeout.Infinite);
                     }
-                    void AddHandler(ResultHandler<T> success, ErrorHandler<T> error, Action cancel, Promise<T> medium) {
+                    void AddHandler(Action<T> success, Func<Exception,T> error, Action cancel, Promise<T> medium) {
                         if (success != null || error != null)
                             Interlocked.Increment(ref m_childrenCount);
                     #region IPromiseBase explicit implementation
-                    IPromise IPromise.Then(Action success, ErrorHandler error, Action cancel) {
+                    IPromise IPromise.Then(Action success, Action<Exception> error, Action cancel) {
                         return Then(
-                            success != null ? new ResultHandler<T>(x => success()) : null,
+                            success != null ? new Action<T>(x => success()) : null,
-                            error != null ? new ErrorHandler<T>(e => {
+                            error != null ? new Func<Exception,T>(e => {
                                 error(e);
                                 return default(T);
                             }) : null,
                         );
                     }
-                    IPromise IPromise.Then(Action success, ErrorHandler error) {
+                    IPromise IPromise.Then(Action success, Action<Exception> error) {
                         return Then(
-                            success != null ? new ResultHandler<T>(x => success()) : null,
+                            success != null ? new Action<T>(x => success()) : null,
-                            error != null ? new ErrorHandler<T>(e => {
+                            error != null ? new Func<Exception,T>(e => {
                                 error(e);
                                 return default(T);
                             }) : null
                         return Then(x => success());
                     }
-                    IPromise IPromise.Chain(Func<IPromise> chained, ErrorHandler<IPromise> error, Action cancel) {
+                    IPromise IPromise.Chain(Func<IPromise> chained, Func<Exception,IPromise> error, Action cancel) {
                         return ChainNoResult(chained, error, cancel);
                     }
-                    IPromise ChainNoResult(Func<IPromise> chained, ErrorHandler<IPromise> error, Action cancel) {
+                    IPromise ChainNoResult(Func<IPromise> chained, Func<Exception,IPromise> error, Action cancel) {
                             Safe.ArgumentNotNull(chained, "chained");
-                        var medium = new Promise<object>(this, true);
+                        var medium = new Promise<object>(this);
-                            ResultHandler<T> resultHandler = delegate(T result) {
+                        Action<T> resultHandler = delegate {
                                 if (medium.IsCancelled)
                                     return;
                                 });
                             };
-                            ErrorHandler<T> errorHandler;
+                        Func<Exception,T> errorHandler;
                             if (error != null)
                                 errorHandler = delegate(Exception e) {
                             return medium;
                     }
-                    IPromise IPromise.Chain(Func<IPromise> chained, ErrorHandler<IPromise> error) {
+                    IPromise IPromise.Chain(Func<IPromise> chained, Func<Exception,IPromise> error) {
                         return ChainNoResult(chained, error, null);
                     }
                     IPromise IPromise.Chain(Func<IPromise> chained) {
                     }
-                    void IPromise.Last(Action success, ErrorHandler error, Action cancel) {
+                    void IPromise.Last(Action success, Action<Exception> error, Action cancel) {
                         Last(x => success(), error, cancel);
                     }
-                    void IPromise.Last(Action success, ErrorHandler error) {
+                    void IPromise.Last(Action success, Action<Exception> error) {
                         Last(x => success(), error, null);
                     }
                         Last(x => success(), null, null);
                     }
-                    IPromise IPromise.Error(ErrorHandler error) {
+                    IPromise IPromise.Error(Action<Exception> error) {
                         return Error(error);
                     }

Implab/PromiseExtensions.cs +20 -2

                         if (context == null)
                             return that;
-                        var p = new SyncContextPromise<T>(context, that, true);
+                        var p = new SyncContextPromise<T>(context, that);
                         that.Last(
                             p.Resolve,
                         Safe.ArgumentNotNull(that, "that");
                         Safe.ArgumentNotNull(context, "context");
-                        var p = new SyncContextPromise<T>(context, that, true);
+                        var p = new SyncContextPromise<T>(context, that);
                         that.Last(
                             p.Resolve,
                         return p;
                     }
+                    /// <summary>
+                    /// Ensures the dispatched.
+                    /// </summary>
+                    /// <returns>The dispatched.</returns>
+                    /// <param name="that">That.</param>
+                    /// <param name="head">Head.</param>
+                    /// <param name="cleanup">Cleanup.</param>
+                    /// <typeparam name="TPromise">The 1st type parameter.</typeparam>
+                    /// <typeparam name="T">The 2nd type parameter.</typeparam>
+                    public static TPromise EnsureDispatched<TPromise,T>(this TPromise that, IPromise<T> head, Action<T> cleanup) where TPromise : IPromise{
+                        Safe.ArgumentNotNull(that, "that");
+                        Safe.ArgumentNotNull(head, "head");
+                        that.Last(null,null,() => head.Last(cleanup));
+                        return that;
+                    }
                     public static AsyncCallback AsyncCallback<T>(this Promise<T> that, Func<IAsyncResult,T> callback) {
                         Safe.ArgumentNotNull(that, "that");
                         Safe.ArgumentNotNull(callback, "callback");

Implab/SyncContextPromise.cs +2 -2

                         m_context = context;
                     }
-                    public SyncContextPromise(SynchronizationContext context, IPromise parent, bool cancellable)
+                    public SyncContextPromise(SynchronizationContext context, IPromise parent)
-                        : base(parent, cancellable) {
+                        : base(parent) {
                         Safe.ArgumentNotNull(context, "context");
                         m_context = context;
                     }

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