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( |
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3 | Promise, INTERNAL, tryConvertToPromise, apiRejection) { |
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4 | var util = require("./util"); |
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5 | |||
6 | var raceLater = function (promise) { |
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7 | return promise.then(function(array) { |
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8 | return race(array, promise); |
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9 | }); |
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10 | }; |
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11 | |||
12 | function race(promises, parent) { |
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13 | var maybePromise = tryConvertToPromise(promises); |
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14 | |||
15 | if (maybePromise instanceof Promise) { |
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16 | return raceLater(maybePromise); |
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17 | } else { |
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18 | promises = util.asArray(promises); |
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19 | if (promises === null) |
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20 | return apiRejection("expecting an array or an iterable object but got " + util.classString(promises)); |
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21 | } |
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22 | |||
23 | var ret = new Promise(INTERNAL); |
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24 | if (parent !== undefined) { |
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25 | ret._propagateFrom(parent, 3); |
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26 | } |
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27 | var fulfill = ret._fulfill; |
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28 | var reject = ret._reject; |
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29 | for (var i = 0, len = promises.length; i < len; ++i) { |
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30 | var val = promises[i]; |
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31 | |||
32 | if (val === undefined && !(i in promises)) { |
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33 | continue; |
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34 | } |
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35 | |||
36 | Promise.cast(val)._then(fulfill, reject, undefined, ret, null); |
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37 | } |
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38 | return ret; |
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39 | } |
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40 | |||
41 | Promise.race = function (promises) { |
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42 | return race(promises, undefined); |
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43 | }; |
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44 | |||
45 | Promise.prototype.race = function () { |
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46 | return race(this, undefined); |
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47 | }; |
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48 | |||
49 | }; |