annotate Implab/Promise.cs @ 102:b4c4d65b7def v2

code cleaunp
author cin
date Fri, 07 Nov 2014 09:36:12 +0300
parents 279e226dffdd
children 5f10d54b45df
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rev   line source
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1 using System;
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2 using System.Collections.Generic;
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3 using System.Reflection;
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4 using System.Threading;
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5 using Implab.Parallels;
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6
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7 namespace Implab {
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8
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9 /// <summary>
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10 /// Класс для асинхронного получения результатов. Так называемое "обещание".
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11 /// </summary>
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12 /// <typeparam name="T">Тип получаемого результата</typeparam>
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13 /// <remarks>
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14 /// <para>Сервис при обращении к его методу дает обещаиние о выполнении операции,
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15 /// клиент получив такое обещание может установить ряд обратных вызово для получения
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16 /// событий выполнения обещания, тоесть завершения операции и предоставлении результатов.</para>
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17 /// <para>
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18 /// Обещение может быть как выполнено, так и выполнено с ошибкой. Для подписки на
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19 /// данные события клиент должен использовать методы <c>Then</c>.
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20 /// </para>
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21 /// <para>
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22 /// Сервис, в свою очередь, по окончанию выполнения операции (возможно с ошибкой),
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23 /// использует методы <c>Resolve</c> либо <c>Reject</c> для оповещения клиетна о
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24 /// выполнении обещания.
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25 /// </para>
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26 /// <para>
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27 /// Если сервер успел выполнить обещание еще до того, как клиент на него подписался,
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28 /// то в момент подписки клиента будут вызваны соответсвующие события в синхронном
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29 /// режиме и клиент будет оповещен в любом случае. Иначе, обработчики добавляются в
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30 /// список в порядке подписания и в этом же порядке они будут вызваны при выполнении
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31 /// обещания.
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32 /// </para>
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33 /// <para>
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34 /// Обрабатывая результаты обещания можно преобразовывать результаты либо инициировать
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35 /// связанные асинхронные операции, которые также возвращают обещания. Для этого следует
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36 /// использовать соответствующую форму методе <c>Then</c>.
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37 /// </para>
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38 /// <para>
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39 /// Также хорошим правилом является то, что <c>Resolve</c> и <c>Reject</c> должен вызывать
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40 /// только инициатор обещания иначе могут возникнуть противоречия.
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41 /// </para>
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42 /// </remarks>
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43 public class Promise<T> : IPromise<T> {
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44
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45 protected struct HandlerDescriptor {
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46 public Action<T> resultHandler;
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47 public Func<Exception,T> errorHandler;
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48 public Action cancellHandler;
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49 public Promise<T> medium;
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50
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51 public void Resolve(T result) {
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52 if (resultHandler != null) {
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53 try {
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54 resultHandler(result);
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55 } catch (Exception e) {
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56 Reject(e);
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57 return;
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58 }
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59 }
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60 if (medium != null)
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61 medium.Resolve(result);
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62 }
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64 public void Reject(Exception err) {
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65 if (errorHandler != null) {
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66 try {
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67 var res = errorHandler(err);
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68 if (medium != null)
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69 medium.Resolve(res);
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70 /*} catch (TransientPromiseException err2) {
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71 if (medium != null)
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72 medium.Reject(err2.InnerException);*/
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73 } catch (Exception err2) {
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74 if (medium != null)
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75 medium.Reject(err2);
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76 }
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77 } else if (medium != null)
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78 medium.Reject(err);
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79 }
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81 public void Cancel() {
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82 if (cancellHandler != null) {
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83 try {
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84 cancellHandler();
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85 } catch (Exception err) {
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86 Reject(err);
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87 return;
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88 }
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89 }
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90 if (medium != null)
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91 medium.Cancel();
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92 }
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93 }
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94
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95 const int UNRESOLVED_SATE = 0;
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96 const int TRANSITIONAL_STATE = 1;
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97 const int SUCCEEDED_STATE = 2;
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98 const int REJECTED_STATE = 3;
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99 const int CANCELLED_STATE = 4;
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100
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101 int m_childrenCount;
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102 int m_state;
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103 T m_result;
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104 Exception m_error;
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105
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106 readonly MTQueue<HandlerDescriptor> m_handlers = new MTQueue<HandlerDescriptor>();
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107
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108 public Promise() {
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109 }
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110
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111 public Promise(IPromise parent) {
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112 if (parent != null)
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113 AddHandler(
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114 null,
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115 null,
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116 () => {
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117 if (parent.IsExclusive)
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118 parent.Cancel();
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119 },
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120 null
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121 );
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122 }
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123
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124 bool BeginTransit() {
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125 return UNRESOLVED_SATE == Interlocked.CompareExchange(ref m_state, TRANSITIONAL_STATE, UNRESOLVED_SATE);
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126 }
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127
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128 void CompleteTransit(int state) {
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129 if (TRANSITIONAL_STATE != Interlocked.CompareExchange(ref m_state, state, TRANSITIONAL_STATE))
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130 throw new InvalidOperationException("Can't complete transition when the object isn't in the transitional state");
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131 }
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132
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133 void WaitTransition() {
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134 while (m_state == TRANSITIONAL_STATE) {
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135 Thread.MemoryBarrier();
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136 }
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137 }
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138
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139 public bool IsResolved {
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140 get {
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141 Thread.MemoryBarrier();
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142 return m_state > 1;
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143 }
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144 }
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145
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146 public bool IsCancelled {
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147 get {
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148 Thread.MemoryBarrier();
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149 return m_state == CANCELLED_STATE;
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150 }
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151 }
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152
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153 public Type PromiseType {
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154 get { return typeof(T); }
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155 }
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156
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157 /// <summary>
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158 /// Выполняет обещание, сообщая об успешном выполнении.
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159 /// </summary>
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160 /// <param name="result">Результат выполнения.</param>
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161 /// <exception cref="InvalidOperationException">Данное обещание уже выполнено</exception>
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162 public void Resolve(T result) {
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163 if (BeginTransit()) {
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164 m_result = result;
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165 CompleteTransit(SUCCEEDED_STATE);
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166 OnStateChanged();
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167 } else {
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168 WaitTransition();
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169 if (m_state != CANCELLED_STATE)
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170 throw new InvalidOperationException("The promise is already resolved");
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171 }
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172 }
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173
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174 /// <summary>
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175 /// Выполняет обещание, сообщая об успешном выполнении. Результатом выполнения будет пустое значения.
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176 /// </summary>
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177 /// <remarks>
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178 /// Данный вариант удобен в случаях, когда интересен факт выполнения операции, нежели полученное значение.
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179 /// </remarks>
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180 public void Resolve() {
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181 Resolve(default(T));
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182 }
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183
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184 /// <summary>
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185 /// Выполняет обещание, сообщая об ошибке
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186 /// </summary>
16
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187 /// <remarks>
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188 /// Поскольку обещание должно работать в многопточной среде, при его выполнении сразу несколько потоков
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189 /// могу вернуть ошибку, при этом только первая будет использована в качестве результата, остальные
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190 /// будут проигнорированы.
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191 /// </remarks>
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192 /// <param name="error">Исключение возникшее при выполнении операции</param>
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193 /// <exception cref="InvalidOperationException">Данное обещание уже выполнено</exception>
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194 public void Reject(Exception error) {
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195 if (BeginTransit()) {
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196 m_error = error is TransientPromiseException ? error.InnerException : error;
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197 CompleteTransit(REJECTED_STATE);
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198 OnStateChanged();
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199 } else {
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200 WaitTransition();
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201 if (m_state == SUCCEEDED_STATE)
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202 throw new InvalidOperationException("The promise is already resolved");
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203 }
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204 }
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205
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206 /// <summary>
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207 /// Отменяет операцию, если это возможно.
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208 /// </summary>
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209 /// <remarks>Для определения была ли операция отменена следует использовать свойство <see cref="IsCancelled"/>.</remarks>
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210 public void Cancel() {
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211 if (BeginTransit()) {
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212 CompleteTransit(CANCELLED_STATE);
33
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213 OnStateChanged();
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214 }
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215 }
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216
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217 public IPromise<T> Then(Action<T> success, Func<Exception,T> error, Action cancel) {
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218 if (success == null && error == null && cancel == null)
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219 return this;
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220
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221 var medium = new Promise<T>(this);
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222
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223 AddHandler(success, error, cancel, medium);
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224
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225 return medium;
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226 }
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227
6
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228 /// <summary>
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229 /// Adds new handlers to this promise.
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230 /// </summary>
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231 /// <param name="success">The handler of the successfully completed operation.
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232 /// This handler will recieve an operation result as a parameter.</param>
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233 /// <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>
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234 /// <returns>The new promise chained to this one.</returns>
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235 public IPromise<T> Then(Action<T> success, Func<Exception,T> error) {
11
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236 if (success == null && error == null)
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237 return this;
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238
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239 var medium = new Promise<T>(this);
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240
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241 AddHandler(success, error, null, medium);
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242
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243 return medium;
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244 }
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245
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246
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247
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248
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249 public IPromise<T> Then(Action<T> success) {
11
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250 if (success == null)
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251 return this;
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252
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253 var medium = new Promise<T>(this);
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254
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255 AddHandler(success, null, null, medium);
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256
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257 return medium;
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258 }
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259
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260 /// <summary>
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261 /// Последний обработчик в цепочки обещаний.
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262 /// </summary>
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263 /// <param name="success"></param>
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264 /// <param name="error"></param>
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265 /// <param name="cancel"></param>
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266 /// <remarks>
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267 /// <para>
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268 /// Данный метод не создает связанного с текущим обещания и предназначен для окончания
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269 /// фсинхронной цепочки.
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270 /// </para>
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271 /// <para>
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272 /// Если данный метод вызвать несколько раз, либо добавить другие обработчики, то цепочка
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273 /// не будет одиночной <see cref="IsExclusive"/> и, как следствие, будет невозможна отмена
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274 /// всей цепи обещаний снизу (с самого последнего обещания).
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275 /// </para>
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276 /// </remarks>
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277 public void Last(Action<T> success, Action<Exception> error, Action cancel) {
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278 if (success == null && error == null && cancel == null)
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279 return;
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280
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281 Func<Exception,T> errorHandler = null;
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282 if (error != null)
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283 errorHandler = err => {
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284 error(err);
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285 return default(T);
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286 };
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287 AddHandler(success, errorHandler, cancel, null);
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288 }
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289
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290 public void Last(Action<T> success, Action<Exception> error) {
75
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291 Last(success, error, null);
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292 }
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293
101
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294 public void Last(Action<T> success) {
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295 Last(success, null, null);
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296 }
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297
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298 public IPromise Error(Action<Exception> error) {
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299 if (error == null)
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300 return this;
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301
101
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302 var medium = new Promise<T>(this);
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303
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304 AddHandler(
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305 null,
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306 e => {
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307 error(e);
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308 return default(T);
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309 },
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310 null,
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311 medium
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312 );
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313
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314 return medium;
6
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315 }
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316
11
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317 /// <summary>
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318 /// Handles error and allows to keep the promise.
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319 /// </summary>
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320 /// <remarks>
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321 /// If the specified handler throws an exception, this exception will be used to reject the promise.
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322 /// </remarks>
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323 /// <param name="handler">The error handler which returns the result of the promise.</param>
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324 /// <returns>New promise.</returns>
101
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325 public IPromise<T> Error(Func<Exception,T> handler) {
11
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326 if (handler == null)
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327 return this;
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328
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329 var medium = new Promise<T>(this);
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330
72
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331 AddHandler(null, handler, null, medium);
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332
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333 return medium;
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334 }
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335
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336 /// <summary>
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337 /// Позволяет преобразовать результат выполения операции к новому типу.
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338 /// </summary>
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339 /// <typeparam name="TNew">Новый тип результата.</typeparam>
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340 /// <param name="mapper">Преобразование результата к новому типу.</param>
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341 /// <param name="error">Обработчик ошибки. Данный обработчик получит
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342 /// исключение возникшее при выполнении операции.</param>
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343 /// <returns>Новое обещание, которое будет выполнено при выполнении исходного обещания.</returns>
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344 /// <param name = "cancel"></param>
101
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345 public IPromise<TNew> Then<TNew>(Func<T, TNew> mapper, Func<Exception,TNew> error, Action cancel) {
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346 Safe.ArgumentNotNull(mapper, "mapper");
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347
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348 // создаем прицепленное обещание
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349 var medium = new Promise<TNew>(this);
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350
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351 Action<T> resultHandler = result => medium.Resolve(mapper(result));
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352 Func<Exception,T> errorHandler;
72
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353 if (error != null)
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354 errorHandler = e => {
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355 try {
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356 medium.Resolve(error(e));
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357 } catch (Exception e2) {
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358 // в случае ошибки нужно передать исключение дальше по цепочке
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359 medium.Reject(e2);
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360 }
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361 return default(T);
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362 };
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363 else
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364 errorHandler = e => {
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365 medium.Reject(e);
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366 return default(T);
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367 };
19
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368
76
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369 Action cancelHandler;
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370 if (cancel != null)
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371 cancelHandler = () => {
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372 cancel();
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373 medium.Cancel();
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374 };
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diff changeset
375 else
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
376 cancelHandler = medium.Cancel;
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
377
19
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
378
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
379 AddHandler(
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
380 resultHandler,
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
381 errorHandler,
76
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
382 cancelHandler,
72
d67b95eddaf4 promises refactoring
cin
parents: 71
diff changeset
383 null
19
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
384 );
2
aa367305156b small fixes
cin
parents: 1
diff changeset
385
76
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
386 return medium;
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
387 }
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
388
101
279e226dffdd code cleanup
cin
parents: 99
diff changeset
389 public IPromise<TNew> Then<TNew>(Func<T, TNew> mapper, Func<Exception,TNew> error) {
76
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
390 return Then(mapper, error, null);
6
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
391 }
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
392
101
279e226dffdd code cleanup
cin
parents: 99
diff changeset
393 public IPromise<TNew> Then<TNew>(Func<T, TNew> mapper) {
76
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
394 return Then(mapper, null, null);
6
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
395 }
2
aa367305156b small fixes
cin
parents: 1
diff changeset
396
6
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
397 /// <summary>
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
398 /// Сцепляет несколько аснхронных операций. Указанная асинхронная операция будет вызвана после
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
399 /// выполнения текущей, а результат текущей операции может быть использован для инициализации
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
400 /// новой операции.
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
401 /// </summary>
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
402 /// <typeparam name="TNew">Тип результата указанной асинхронной операции.</typeparam>
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
403 /// <param name="chained">Асинхронная операция, которая должна будет начаться после выполнения текущей.</param>
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
404 /// <param name="error">Обработчик ошибки. Данный обработчик получит
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
405 /// исключение возникшее при выполнении текуещй операции.</param>
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
406 /// <returns>Новое обещание, которое будет выполнено по окончанию указанной аснхронной операции.</returns>
96
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
407 /// <param name = "cancel"></param>
101
279e226dffdd code cleanup
cin
parents: 99
diff changeset
408 public IPromise<TNew> Chain<TNew>(Func<T, IPromise<TNew>> chained, Func<Exception,IPromise<TNew>> error, Action cancel) {
76
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
409
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
410 Safe.ArgumentNotNull(chained, "chained");
6
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
411
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
412 // проблема в том, что на момент связывания еще не начата асинхронная операция, поэтому нужно
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
413 // создать посредника, к которому будут подвызяваться следующие обработчики.
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
414 // когда будет выполнена реальная асинхронная операция, она обратиться к посреднику, чтобы
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
415 // передать через него результаты работы.
101
279e226dffdd code cleanup
cin
parents: 99
diff changeset
416 var medium = new Promise<TNew>(this);
2
aa367305156b small fixes
cin
parents: 1
diff changeset
417
101
279e226dffdd code cleanup
cin
parents: 99
diff changeset
418 Action<T> resultHandler = delegate(T result) {
19
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
419 if (medium.IsCancelled)
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
420 return;
10
aa33d0bb8c0c implemeted new cancellable promises concept
cin
parents: 9
diff changeset
421
19
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
422 var promise = chained(result);
10
aa33d0bb8c0c implemeted new cancellable promises concept
cin
parents: 9
diff changeset
423
76
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
424 promise.Last(
72
d67b95eddaf4 promises refactoring
cin
parents: 71
diff changeset
425 medium.Resolve,
76
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
426 medium.Reject,
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
427 () => medium.Reject(new OperationCanceledException()) // внешняя отмена связанной операции рассматривается как ошибка
19
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
428 );
33
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
429
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
430 // notify chained operation that it's not needed anymore
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
431 // порядок вызова Then, Cancelled важен, поскольку от этого
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
432 // зависит IsExclusive
101
279e226dffdd code cleanup
cin
parents: 99
diff changeset
433 medium.Last(
279e226dffdd code cleanup
cin
parents: 99
diff changeset
434 null,
279e226dffdd code cleanup
cin
parents: 99
diff changeset
435 null,
279e226dffdd code cleanup
cin
parents: 99
diff changeset
436 () => {
279e226dffdd code cleanup
cin
parents: 99
diff changeset
437 if (promise.IsExclusive)
279e226dffdd code cleanup
cin
parents: 99
diff changeset
438 promise.Cancel();
279e226dffdd code cleanup
cin
parents: 99
diff changeset
439 }
279e226dffdd code cleanup
cin
parents: 99
diff changeset
440 );
19
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
441 };
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
442
101
279e226dffdd code cleanup
cin
parents: 99
diff changeset
443 Func<Exception,T> errorHandler;
76
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
444
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
445 if (error != null)
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
446 errorHandler = delegate(Exception e) {
72
d67b95eddaf4 promises refactoring
cin
parents: 71
diff changeset
447 try {
76
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
448 var promise = error(e);
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
449
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
450 promise.Last(
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
451 medium.Resolve,
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
452 medium.Reject,
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
453 () => medium.Reject(new OperationCanceledException()) // внешняя отмена связанной операции рассматривается как ошибка
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
454 );
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
455
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
456 // notify chained operation that it's not needed anymore
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
457 // порядок вызова Then, Cancelled важен, поскольку от этого
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
458 // зависит IsExclusive
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
459 medium.Cancelled(() => {
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
460 if (promise.IsExclusive)
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
461 promise.Cancel();
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
462 });
72
d67b95eddaf4 promises refactoring
cin
parents: 71
diff changeset
463 } catch (Exception e2) {
d67b95eddaf4 promises refactoring
cin
parents: 71
diff changeset
464 medium.Reject(e2);
d67b95eddaf4 promises refactoring
cin
parents: 71
diff changeset
465 }
76
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
466 return default(T);
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
467 };
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
468 else
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
469 errorHandler = err => {
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
470 medium.Reject(err);
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
471 return default(T);
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
472 };
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
473
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
474
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
475 Action cancelHandler;
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
476 if (cancel != null)
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
477 cancelHandler = () => {
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
478 if (cancel != null)
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
479 cancel();
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
480 medium.Cancel();
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
481 };
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
482 else
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
483 cancelHandler = medium.Cancel;
19
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
484
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
485 AddHandler(
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
486 resultHandler,
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
487 errorHandler,
76
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
488 cancelHandler,
72
d67b95eddaf4 promises refactoring
cin
parents: 71
diff changeset
489 null
19
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
490 );
2
aa367305156b small fixes
cin
parents: 1
diff changeset
491
6
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
492 return medium;
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
493 }
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
494
101
279e226dffdd code cleanup
cin
parents: 99
diff changeset
495 public IPromise<TNew> Chain<TNew>(Func<T, IPromise<TNew>> chained, Func<Exception,IPromise<TNew>> error) {
76
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
496 return Chain(chained, error, null);
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
497 }
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
498
101
279e226dffdd code cleanup
cin
parents: 99
diff changeset
499 public IPromise<TNew> Chain<TNew>(Func<T, IPromise<TNew>> chained) {
76
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
500 return Chain(chained, null, null);
6
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
501 }
2
aa367305156b small fixes
cin
parents: 1
diff changeset
502
26
f0bf98e4d22c refactoring
cin
parents: 25
diff changeset
503 public IPromise<T> Cancelled(Action handler) {
101
279e226dffdd code cleanup
cin
parents: 99
diff changeset
504 var medium = new Promise<T>(this);
74
c4140283575c minor fixes
cin
parents: 72
diff changeset
505 AddHandler(null, null, handler, medium);
c4140283575c minor fixes
cin
parents: 72
diff changeset
506 return medium;
10
aa33d0bb8c0c implemeted new cancellable promises concept
cin
parents: 9
diff changeset
507 }
aa33d0bb8c0c implemeted new cancellable promises concept
cin
parents: 9
diff changeset
508
25
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
509 /// <summary>
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
510 /// Adds the specified handler for all cases (success, error, cancel)
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
511 /// </summary>
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
512 /// <param name="handler">The handler that will be called anyway</param>
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
513 /// <returns>self</returns>
76
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
514 public IPromise<T> Anyway(Action handler) {
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
515 Safe.ArgumentNotNull(handler, "handler");
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
516
19
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
517 AddHandler(
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
518 x => handler(),
72
d67b95eddaf4 promises refactoring
cin
parents: 71
diff changeset
519 e => {
d67b95eddaf4 promises refactoring
cin
parents: 71
diff changeset
520 handler();
d67b95eddaf4 promises refactoring
cin
parents: 71
diff changeset
521 throw new TransientPromiseException(e);
d67b95eddaf4 promises refactoring
cin
parents: 71
diff changeset
522 },
d67b95eddaf4 promises refactoring
cin
parents: 71
diff changeset
523 handler,
d67b95eddaf4 promises refactoring
cin
parents: 71
diff changeset
524 null
19
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
525 );
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
526 return this;
10
aa33d0bb8c0c implemeted new cancellable promises concept
cin
parents: 9
diff changeset
527 }
aa33d0bb8c0c implemeted new cancellable promises concept
cin
parents: 9
diff changeset
528
6
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
529 /// <summary>
29
768f7deeb55b Added a casting method for promises.
cin
parents: 28
diff changeset
530 /// Преобразует результат обещания к нужному типу
768f7deeb55b Added a casting method for promises.
cin
parents: 28
diff changeset
531 /// </summary>
768f7deeb55b Added a casting method for promises.
cin
parents: 28
diff changeset
532 /// <typeparam name="T2"></typeparam>
768f7deeb55b Added a casting method for promises.
cin
parents: 28
diff changeset
533 /// <returns></returns>
768f7deeb55b Added a casting method for promises.
cin
parents: 28
diff changeset
534 public IPromise<T2> Cast<T2>() {
75
4439140706d0 major refactoring, added tasks support
cin
parents: 74
diff changeset
535 return Then(x => (T2)(object)x, null);
29
768f7deeb55b Added a casting method for promises.
cin
parents: 28
diff changeset
536 }
768f7deeb55b Added a casting method for promises.
cin
parents: 28
diff changeset
537
768f7deeb55b Added a casting method for promises.
cin
parents: 28
diff changeset
538 /// <summary>
6
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
539 /// Дожидается отложенного обещания и в случае успеха, возвращает
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
540 /// его, результат, в противном случае бросает исключение.
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
541 /// </summary>
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
542 /// <remarks>
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
543 /// <para>
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
544 /// Если ожидание обещания было прервано по таймауту, это не значит,
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
545 /// что обещание было отменено или что-то в этом роде, это только
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
546 /// означает, что мы его не дождались, однако все зарегистрированные
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
547 /// обработчики, как были так остались и они будут вызваны, когда
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
548 /// обещание будет выполнено.
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
549 /// </para>
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
550 /// <para>
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
551 /// Такое поведение вполне оправдано поскольку таймаут может истечь
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
552 /// в тот момент, когда началась обработка цепочки обработчиков, и
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
553 /// к тому же текущее обещание может стоять в цепочке обещаний и его
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
554 /// отклонение может привести к непрогнозируемому результату.
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
555 /// </para>
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
556 /// </remarks>
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
557 /// <param name="timeout">Время ожидания</param>
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
558 /// <returns>Результат выполнения обещания</returns>
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
559 public T Join(int timeout) {
10
aa33d0bb8c0c implemeted new cancellable promises concept
cin
parents: 9
diff changeset
560 var evt = new ManualResetEvent(false);
76
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
561 Anyway(() => evt.Set());
2
aa367305156b small fixes
cin
parents: 1
diff changeset
562
6
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
563 if (!evt.WaitOne(timeout, true))
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
564 throw new TimeoutException();
2
aa367305156b small fixes
cin
parents: 1
diff changeset
565
19
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
566 switch (m_state) {
71
1714fd8678ef code cleanup
cin
parents: 66
diff changeset
567 case SUCCEEDED_STATE:
10
aa33d0bb8c0c implemeted new cancellable promises concept
cin
parents: 9
diff changeset
568 return m_result;
71
1714fd8678ef code cleanup
cin
parents: 66
diff changeset
569 case CANCELLED_STATE:
10
aa33d0bb8c0c implemeted new cancellable promises concept
cin
parents: 9
diff changeset
570 throw new OperationCanceledException();
71
1714fd8678ef code cleanup
cin
parents: 66
diff changeset
571 case REJECTED_STATE:
10
aa33d0bb8c0c implemeted new cancellable promises concept
cin
parents: 9
diff changeset
572 throw new TargetInvocationException(m_error);
aa33d0bb8c0c implemeted new cancellable promises concept
cin
parents: 9
diff changeset
573 default:
19
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
574 throw new ApplicationException(String.Format("Invalid promise state {0}", m_state));
10
aa33d0bb8c0c implemeted new cancellable promises concept
cin
parents: 9
diff changeset
575 }
6
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
576 }
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
577
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
578 public T Join() {
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
579 return Join(Timeout.Infinite);
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
580 }
2
aa367305156b small fixes
cin
parents: 1
diff changeset
581
101
279e226dffdd code cleanup
cin
parents: 99
diff changeset
582 void AddHandler(Action<T> success, Func<Exception,T> error, Action cancel, Promise<T> medium) {
33
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
583 if (success != null || error != null)
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
584 Interlocked.Increment(ref m_childrenCount);
19
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
585
72
d67b95eddaf4 promises refactoring
cin
parents: 71
diff changeset
586 var handler = new HandlerDescriptor {
19
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
587 resultHandler = success,
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
588 errorHandler = error,
72
d67b95eddaf4 promises refactoring
cin
parents: 71
diff changeset
589 cancellHandler = cancel,
d67b95eddaf4 promises refactoring
cin
parents: 71
diff changeset
590 medium = medium
19
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
591 };
2
aa367305156b small fixes
cin
parents: 1
diff changeset
592
19
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
593 bool queued;
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
594
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
595 if (!IsResolved) {
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
596 m_handlers.Enqueue(handler);
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
597 queued = true;
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
598 } else {
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
599 // the promise is in resolved state, just invoke the handled with minimum overhead
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
600 queued = false;
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
601 InvokeHandler(handler);
6
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
602 }
2
aa367305156b small fixes
cin
parents: 1
diff changeset
603
19
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
604 if (queued && IsResolved && m_handlers.TryDequeue(out handler))
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
605 // if the promise have been resolved while we was adding handler to the queue
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
606 // we can't guarantee that someone is still processing it
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
607 // therefore we will fetch a handler from the queue and execute it
27
cin
parents: 26
diff changeset
608 // note that fetched handler may be not the one that we have added
cin
parents: 26
diff changeset
609 // even we can fetch no handlers at all :)
6
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
610 InvokeHandler(handler);
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
611 }
2
aa367305156b small fixes
cin
parents: 1
diff changeset
612
27
cin
parents: 26
diff changeset
613 protected virtual void InvokeHandler(HandlerDescriptor handler) {
10
aa33d0bb8c0c implemeted new cancellable promises concept
cin
parents: 9
diff changeset
614 switch (m_state) {
71
1714fd8678ef code cleanup
cin
parents: 66
diff changeset
615 case SUCCEEDED_STATE:
19
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
616 handler.Resolve(m_result);
10
aa33d0bb8c0c implemeted new cancellable promises concept
cin
parents: 9
diff changeset
617 break;
71
1714fd8678ef code cleanup
cin
parents: 66
diff changeset
618 case REJECTED_STATE:
19
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
619 handler.Reject(m_error);
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
620 break;
71
1714fd8678ef code cleanup
cin
parents: 66
diff changeset
621 case CANCELLED_STATE:
19
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
622 handler.Cancel();
10
aa33d0bb8c0c implemeted new cancellable promises concept
cin
parents: 9
diff changeset
623 break;
aa33d0bb8c0c implemeted new cancellable promises concept
cin
parents: 9
diff changeset
624 default:
aa33d0bb8c0c implemeted new cancellable promises concept
cin
parents: 9
diff changeset
625 // do nothing
aa33d0bb8c0c implemeted new cancellable promises concept
cin
parents: 9
diff changeset
626 return;
6
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
627 }
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
628 }
2
aa367305156b small fixes
cin
parents: 1
diff changeset
629
65
653c4e04968b minor changes
cin
parents: 33
diff changeset
630 void OnStateChanged() {
19
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
631 HandlerDescriptor handler;
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
632 while (m_handlers.TryDequeue(out handler))
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
633 InvokeHandler(handler);
11
6ec82bf68c8e refactoring
cin
parents: 10
diff changeset
634 }
6ec82bf68c8e refactoring
cin
parents: 10
diff changeset
635
9
cin
parents: 7
diff changeset
636 public bool IsExclusive {
cin
parents: 7
diff changeset
637 get {
19
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
638 return m_childrenCount <= 1;
9
cin
parents: 7
diff changeset
639 }
cin
parents: 7
diff changeset
640 }
cin
parents: 7
diff changeset
641
25
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
642 /// <summary>
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
643 /// Объединяет несколько обещаний в одно, результатом которого является массив результатов других обещаний.
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
644 /// Если хотябы одно из переданных обещаний не будет выполнено, то новое обещение тоже не будет выполнено.
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
645 /// При отмене нового обещания, переданные обещания также будут отменены, если никто больше на них не подписан.
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
646 /// </summary>
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
647 /// <param name="promises">Список обещаний. Если список пустой, то результирующее обещание возвращается уже выполненным.</param>
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
648 /// <returns>Обещание объединяющее в себе результат переданных обещаний.</returns>
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
649 /// <exception cref="ArgumentNullException"><paramref name="promises"/> не может быть null</exception>
30
2fad2d1f4b03 small refactoring, cleanup.
cin
parents: 29
diff changeset
650 public static IPromise<T[]> CreateComposite(IList<IPromise<T>> promises) {
25
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
651 if (promises == null)
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
652 throw new ArgumentNullException();
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
653
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
654 // создаем аккумулятор для результатов и результирующее обещание
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
655 var result = new T[promises.Count];
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
656 var promise = new Promise<T[]>();
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
657
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
658 // special case
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
659 if (promises.Count == 0) {
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
660 promise.Resolve(result);
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
661 return promise;
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
662 }
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
663
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
664 int pending = promises.Count;
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
665
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
666 for (int i = 0; i < promises.Count; i++) {
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
667 var dest = i;
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
668
33
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
669 if (promises[i] != null) {
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
670 promises[i].Then(
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
671 x => {
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
672 result[dest] = x;
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
673 if (Interlocked.Decrement(ref pending) == 0)
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
674 promise.Resolve(result);
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
675 },
72
d67b95eddaf4 promises refactoring
cin
parents: 71
diff changeset
676 e => {
d67b95eddaf4 promises refactoring
cin
parents: 71
diff changeset
677 promise.Reject(e);
d67b95eddaf4 promises refactoring
cin
parents: 71
diff changeset
678 return default(T);
d67b95eddaf4 promises refactoring
cin
parents: 71
diff changeset
679 }
33
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
680 );
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
681 } else {
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
682 if (Interlocked.Decrement(ref pending) == 0)
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
683 promise.Resolve(result);
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
684 }
25
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
685 }
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
686
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
687 promise.Cancelled(
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
688 () => {
33
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
689 foreach (var d in promises)
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
690 if (d != null && d.IsExclusive)
25
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
691 d.Cancel();
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
692 }
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
693 );
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
694
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
695 return promise;
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
696 }
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
697
33
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
698 /// <summary>
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
699 /// Объединяет несколько обещаний в одно. Результирующее обещание будет выполнено при
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
700 /// выполнении всех указанных обещаний. При этом возвращаемые значения первичных обещаний
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
701 /// игнорируются.
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
702 /// </summary>
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
703 /// <param name="promises">Коллекция первичных обещаний, которые будут объеденены в одно.</param>
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
704 /// <returns>Новое обещание, объединяющее в себе переданные.</returns>
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
705 /// <remarks>
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
706 /// Если в коллекции встречаюься <c>null</c>, то они воспринимаются как выполненные обещания.
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
707 /// </remarks>
66
790e8a997d30 Refactoring
cin
parents: 65
diff changeset
708 public static IPromise CreateComposite(ICollection<IPromise> promises) {
33
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
709 if (promises == null)
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
710 throw new ArgumentNullException();
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
711 if (promises.Count == 0)
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
712 return Promise<object>.ResultToPromise(null);
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
713
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
714 int countdown = promises.Count;
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
715
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
716 var result = new Promise<object>();
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
717
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
718 foreach (var d in promises) {
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
719 if (d == null) {
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
720 if (Interlocked.Decrement(ref countdown) == 0)
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
721 result.Resolve(null);
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
722 } else {
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
723 d.Then(() => {
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
724 if (Interlocked.Decrement(ref countdown) == 0)
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
725 result.Resolve(null);
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
726 });
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
727 }
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
728 }
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
729
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
730 result.Cancelled(() => {
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
731 foreach (var d in promises)
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
732 if (d != null && d.IsExclusive)
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
733 d.Cancel();
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
734 });
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
735
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
736 return result;
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
737 }
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
738
25
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
739 public static Promise<T> ResultToPromise(T result) {
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
740 var p = new Promise<T>();
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
741 p.Resolve(result);
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
742 return p;
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
743 }
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
744
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
745 public static Promise<T> ExceptionToPromise(Exception error) {
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
746 if (error == null)
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
747 throw new ArgumentNullException();
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
748
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
749 var p = new Promise<T>();
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
750 p.Reject(error);
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
751 return p;
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
752 }
9bf5b23650c9 refactoring
cin
parents: 19
diff changeset
753
33
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
754 #region IPromiseBase explicit implementation
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
755
101
279e226dffdd code cleanup
cin
parents: 99
diff changeset
756 IPromise IPromise.Then(Action success, Action<Exception> error, Action cancel) {
76
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
757 return Then(
101
279e226dffdd code cleanup
cin
parents: 99
diff changeset
758 success != null ? new Action<T>(x => success()) : null,
279e226dffdd code cleanup
cin
parents: 99
diff changeset
759 error != null ? new Func<Exception,T>(e => {
76
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
760 error(e);
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
761 return default(T);
96
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
762 }) : null,
76
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
763 cancel
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
764 );
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
765 }
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
766
101
279e226dffdd code cleanup
cin
parents: 99
diff changeset
767 IPromise IPromise.Then(Action success, Action<Exception> error) {
76
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
768 return Then(
101
279e226dffdd code cleanup
cin
parents: 99
diff changeset
769 success != null ? new Action<T>(x => success()) : null,
279e226dffdd code cleanup
cin
parents: 99
diff changeset
770 error != null ? new Func<Exception,T>(e => {
76
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
771 error(e);
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
772 return default(T);
96
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
773 }) : null
76
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
774 );
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
775 }
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
776
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
777 IPromise IPromise.Then(Action success) {
96
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
778 Safe.ArgumentNotNull(success, "success");
76
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
779 return Then(x => success());
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
780 }
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
781
101
279e226dffdd code cleanup
cin
parents: 99
diff changeset
782 IPromise IPromise.Chain(Func<IPromise> chained, Func<Exception,IPromise> error, Action cancel) {
96
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
783 return ChainNoResult(chained, error, cancel);
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
784 }
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
785
101
279e226dffdd code cleanup
cin
parents: 99
diff changeset
786 IPromise ChainNoResult(Func<IPromise> chained, Func<Exception,IPromise> error, Action cancel) {
96
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
787 Safe.ArgumentNotNull(chained, "chained");
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
788
101
279e226dffdd code cleanup
cin
parents: 99
diff changeset
789 var medium = new Promise<object>(this);
96
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
790
101
279e226dffdd code cleanup
cin
parents: 99
diff changeset
791 Action<T> resultHandler = delegate {
96
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
792 if (medium.IsCancelled)
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
793 return;
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
794
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
795 var promise = chained();
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
796
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
797 promise.Last(
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
798 medium.Resolve,
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
799 medium.Reject,
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
800 () => medium.Reject(new OperationCanceledException()) // внешняя отмена связанной операции рассматривается как ошибка
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
801 );
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
802
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
803 // notify chained operation that it's not needed anymore
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
804 // порядок вызова Then, Cancelled важен, поскольку от этого
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
805 // зависит IsExclusive
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
806 medium.Cancelled(() => {
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
807 if (promise.IsExclusive)
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
808 promise.Cancel();
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
809 });
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
810 };
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
811
101
279e226dffdd code cleanup
cin
parents: 99
diff changeset
812 Func<Exception,T> errorHandler;
96
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
813
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
814 if (error != null)
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
815 errorHandler = delegate(Exception e) {
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
816 try {
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
817 var promise = error(e);
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
818
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
819 promise.Last(
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
820 medium.Resolve,
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
821 medium.Reject,
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
822 () => medium.Reject(new OperationCanceledException()) // внешняя отмена связанной операции рассматривается как ошибка
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
823 );
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
824
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
825 // notify chained operation that it's not needed anymore
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
826 // порядок вызова Then, Cancelled важен, поскольку от этого
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
827 // зависит IsExclusive
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
828 medium.Cancelled(() => {
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
829 if (promise.IsExclusive)
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
830 promise.Cancel();
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
831 });
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
832 } catch (Exception e2) {
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
833 medium.Reject(e2);
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
834 }
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
835 return default(T);
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
836 };
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
837 else
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
838 errorHandler = err => {
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
839 medium.Reject(err);
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
840 return default(T);
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
841 };
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
842
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
843
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
844 Action cancelHandler;
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
845 if (cancel != null)
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
846 cancelHandler = () => {
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
847 if (cancel != null)
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
848 cancel();
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
849 medium.Cancel();
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
850 };
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
851 else
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
852 cancelHandler = medium.Cancel;
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
853
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
854 AddHandler(
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
855 resultHandler,
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
856 errorHandler,
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
857 cancelHandler,
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
858 null
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
859 );
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
860
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
861 return medium;
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
862 }
101
279e226dffdd code cleanup
cin
parents: 99
diff changeset
863 IPromise IPromise.Chain(Func<IPromise> chained, Func<Exception,IPromise> error) {
96
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
864 return ChainNoResult(chained, error, null);
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
865 }
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
866 IPromise IPromise.Chain(Func<IPromise> chained) {
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
867 return ChainNoResult(chained, null, null);
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
868 }
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
869
daffa72a1cec Added the chaining method to the non-generic IPromise
cin
parents: 80
diff changeset
870
101
279e226dffdd code cleanup
cin
parents: 99
diff changeset
871 void IPromise.Last(Action success, Action<Exception> error, Action cancel) {
76
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
872 Last(x => success(), error, cancel);
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
873 }
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
874
101
279e226dffdd code cleanup
cin
parents: 99
diff changeset
875 void IPromise.Last(Action success, Action<Exception> error) {
76
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
876 Last(x => success(), error, null);
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
877 }
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
878
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
879 void IPromise.Last(Action success) {
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
880 Last(x => success(), null, null);
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
881 }
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
882
101
279e226dffdd code cleanup
cin
parents: 99
diff changeset
883 IPromise IPromise.Error(Action<Exception> error) {
33
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
884 return Error(error);
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
885 }
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
886
76
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
887 IPromise IPromise.Anyway(Action handler) {
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
888 return Anyway(handler);
33
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
889 }
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
890
66
790e8a997d30 Refactoring
cin
parents: 65
diff changeset
891 IPromise IPromise.Cancelled(Action handler) {
33
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
892 return Cancelled(handler);
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
893 }
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
894
66
790e8a997d30 Refactoring
cin
parents: 65
diff changeset
895 void IPromise.Join() {
33
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
896 Join();
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
897 }
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
898
66
790e8a997d30 Refactoring
cin
parents: 65
diff changeset
899 void IPromise.Join(int timeout) {
33
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
900 Join(timeout);
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
901 }
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
902
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
903 #endregion
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
904
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
905
b255e4aeef17 removed the reference to the parent from the promise object this allows
cin
parents: 32
diff changeset
906
6
dfa21d507bc5 *refactoring: Promise.Then now returns a new chained promise
cin
parents: 2
diff changeset
907 }
2
aa367305156b small fixes
cin
parents: 1
diff changeset
908 }