corrade-nucleus-nucleons – Blame information for rev 20
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Rev | Author | Line No. | Line |
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20 | office | 1 | "use strict"; |
2 | module.exports = function(Promise, |
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3 | apiRejection, |
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4 | INTERNAL, |
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5 | tryConvertToPromise, |
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6 | Proxyable, |
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7 | debug) { |
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8 | var errors = require("./errors"); |
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9 | var TypeError = errors.TypeError; |
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10 | var util = require("./util"); |
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11 | var errorObj = util.errorObj; |
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12 | var tryCatch = util.tryCatch; |
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13 | var yieldHandlers = []; |
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14 | |||
15 | function promiseFromYieldHandler(value, yieldHandlers, traceParent) { |
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16 | for (var i = 0; i < yieldHandlers.length; ++i) { |
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17 | traceParent._pushContext(); |
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18 | var result = tryCatch(yieldHandlers[i])(value); |
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19 | traceParent._popContext(); |
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20 | if (result === errorObj) { |
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21 | traceParent._pushContext(); |
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22 | var ret = Promise.reject(errorObj.e); |
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23 | traceParent._popContext(); |
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24 | return ret; |
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25 | } |
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26 | var maybePromise = tryConvertToPromise(result, traceParent); |
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27 | if (maybePromise instanceof Promise) return maybePromise; |
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28 | } |
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29 | return null; |
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30 | } |
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31 | |||
32 | function PromiseSpawn(generatorFunction, receiver, yieldHandler, stack) { |
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33 | if (debug.cancellation()) { |
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34 | var internal = new Promise(INTERNAL); |
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35 | var _finallyPromise = this._finallyPromise = new Promise(INTERNAL); |
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36 | this._promise = internal.lastly(function() { |
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37 | return _finallyPromise; |
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38 | }); |
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39 | internal._captureStackTrace(); |
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40 | internal._setOnCancel(this); |
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41 | } else { |
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42 | var promise = this._promise = new Promise(INTERNAL); |
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43 | promise._captureStackTrace(); |
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44 | } |
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45 | this._stack = stack; |
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46 | this._generatorFunction = generatorFunction; |
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47 | this._receiver = receiver; |
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48 | this._generator = undefined; |
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49 | this._yieldHandlers = typeof yieldHandler === "function" |
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50 | ? [yieldHandler].concat(yieldHandlers) |
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51 | : yieldHandlers; |
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52 | this._yieldedPromise = null; |
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53 | this._cancellationPhase = false; |
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54 | } |
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55 | util.inherits(PromiseSpawn, Proxyable); |
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56 | |||
57 | PromiseSpawn.prototype._isResolved = function() { |
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58 | return this._promise === null; |
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59 | }; |
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60 | |||
61 | PromiseSpawn.prototype._cleanup = function() { |
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62 | this._promise = this._generator = null; |
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63 | if (debug.cancellation() && this._finallyPromise !== null) { |
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64 | this._finallyPromise._fulfill(); |
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65 | this._finallyPromise = null; |
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66 | } |
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67 | }; |
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68 | |||
69 | PromiseSpawn.prototype._promiseCancelled = function() { |
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70 | if (this._isResolved()) return; |
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71 | var implementsReturn = typeof this._generator["return"] !== "undefined"; |
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72 | |||
73 | var result; |
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74 | if (!implementsReturn) { |
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75 | var reason = new Promise.CancellationError( |
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76 | "generator .return() sentinel"); |
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77 | Promise.coroutine.returnSentinel = reason; |
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78 | this._promise._attachExtraTrace(reason); |
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79 | this._promise._pushContext(); |
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80 | result = tryCatch(this._generator["throw"]).call(this._generator, |
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81 | reason); |
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82 | this._promise._popContext(); |
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83 | } else { |
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84 | this._promise._pushContext(); |
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85 | result = tryCatch(this._generator["return"]).call(this._generator, |
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86 | undefined); |
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87 | this._promise._popContext(); |
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88 | } |
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89 | this._cancellationPhase = true; |
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90 | this._yieldedPromise = null; |
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91 | this._continue(result); |
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92 | }; |
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93 | |||
94 | PromiseSpawn.prototype._promiseFulfilled = function(value) { |
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95 | this._yieldedPromise = null; |
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96 | this._promise._pushContext(); |
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97 | var result = tryCatch(this._generator.next).call(this._generator, value); |
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98 | this._promise._popContext(); |
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99 | this._continue(result); |
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100 | }; |
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101 | |||
102 | PromiseSpawn.prototype._promiseRejected = function(reason) { |
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103 | this._yieldedPromise = null; |
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104 | this._promise._attachExtraTrace(reason); |
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105 | this._promise._pushContext(); |
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106 | var result = tryCatch(this._generator["throw"]) |
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107 | .call(this._generator, reason); |
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108 | this._promise._popContext(); |
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109 | this._continue(result); |
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110 | }; |
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111 | |||
112 | PromiseSpawn.prototype._resultCancelled = function() { |
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113 | if (this._yieldedPromise instanceof Promise) { |
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114 | var promise = this._yieldedPromise; |
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115 | this._yieldedPromise = null; |
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116 | promise.cancel(); |
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117 | } |
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118 | }; |
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119 | |||
120 | PromiseSpawn.prototype.promise = function () { |
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121 | return this._promise; |
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122 | }; |
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123 | |||
124 | PromiseSpawn.prototype._run = function () { |
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125 | this._generator = this._generatorFunction.call(this._receiver); |
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126 | this._receiver = |
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127 | this._generatorFunction = undefined; |
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128 | this._promiseFulfilled(undefined); |
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129 | }; |
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130 | |||
131 | PromiseSpawn.prototype._continue = function (result) { |
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132 | var promise = this._promise; |
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133 | if (result === errorObj) { |
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134 | this._cleanup(); |
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135 | if (this._cancellationPhase) { |
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136 | return promise.cancel(); |
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137 | } else { |
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138 | return promise._rejectCallback(result.e, false); |
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139 | } |
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140 | } |
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141 | |||
142 | var value = result.value; |
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143 | if (result.done === true) { |
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144 | this._cleanup(); |
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145 | if (this._cancellationPhase) { |
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146 | return promise.cancel(); |
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147 | } else { |
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148 | return promise._resolveCallback(value); |
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149 | } |
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150 | } else { |
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151 | var maybePromise = tryConvertToPromise(value, this._promise); |
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152 | if (!(maybePromise instanceof Promise)) { |
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153 | maybePromise = |
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154 | promiseFromYieldHandler(maybePromise, |
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155 | this._yieldHandlers, |
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156 | this._promise); |
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157 | if (maybePromise === null) { |
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158 | this._promiseRejected( |
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159 | new TypeError( |
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160 | "A value %s was yielded that could not be treated as a promise\u000a\u000a See http://goo.gl/MqrFmX\u000a\u000a".replace("%s", String(value)) + |
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161 | "From coroutine:\u000a" + |
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162 | this._stack.split("\n").slice(1, -7).join("\n") |
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163 | ) |
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164 | ); |
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165 | return; |
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166 | } |
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167 | } |
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168 | maybePromise = maybePromise._target(); |
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169 | var bitField = maybePromise._bitField; |
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170 | ; |
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171 | if (((bitField & 50397184) === 0)) { |
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172 | this._yieldedPromise = maybePromise; |
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173 | maybePromise._proxy(this, null); |
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174 | } else if (((bitField & 33554432) !== 0)) { |
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175 | Promise._async.invoke( |
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176 | this._promiseFulfilled, this, maybePromise._value() |
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177 | ); |
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178 | } else if (((bitField & 16777216) !== 0)) { |
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179 | Promise._async.invoke( |
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180 | this._promiseRejected, this, maybePromise._reason() |
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181 | ); |
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182 | } else { |
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183 | this._promiseCancelled(); |
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184 | } |
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185 | } |
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186 | }; |
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187 | |||
188 | Promise.coroutine = function (generatorFunction, options) { |
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189 | if (typeof generatorFunction !== "function") { |
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190 | throw new TypeError("generatorFunction must be a function\u000a\u000a See http://goo.gl/MqrFmX\u000a"); |
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191 | } |
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192 | var yieldHandler = Object(options).yieldHandler; |
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193 | var PromiseSpawn$ = PromiseSpawn; |
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194 | var stack = new Error().stack; |
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195 | return function () { |
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196 | var generator = generatorFunction.apply(this, arguments); |
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197 | var spawn = new PromiseSpawn$(undefined, undefined, yieldHandler, |
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198 | stack); |
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199 | var ret = spawn.promise(); |
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200 | spawn._generator = generator; |
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201 | spawn._promiseFulfilled(undefined); |
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202 | return ret; |
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203 | }; |
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204 | }; |
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205 | |||
206 | Promise.coroutine.addYieldHandler = function(fn) { |
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207 | if (typeof fn !== "function") { |
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208 | throw new TypeError("expecting a function but got " + util.classString(fn)); |
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209 | } |
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210 | yieldHandlers.push(fn); |
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211 | }; |
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212 | |||
213 | Promise.spawn = function (generatorFunction) { |
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214 | debug.deprecated("Promise.spawn()", "Promise.coroutine()"); |
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215 | if (typeof generatorFunction !== "function") { |
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216 | return apiRejection("generatorFunction must be a function\u000a\u000a See http://goo.gl/MqrFmX\u000a"); |
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217 | } |
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218 | var spawn = new PromiseSpawn(generatorFunction, this); |
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219 | var ret = spawn.promise(); |
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220 | spawn._run(Promise.spawn); |
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221 | return ret; |
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222 | }; |
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223 | }; |