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node_modules/es6-iterator/#/chain.js
| 40 lines
| 1.1 KiB
| application/javascript
| JavascriptLexer
|
| r789 | "use strict"; | |||
| var setPrototypeOf = require("es5-ext/object/set-prototype-of") | ||||
| , d = require("d") | ||||
| , Iterator = require("../") | ||||
| , validIterable = require("../valid-iterable") | ||||
| , push = Array.prototype.push | ||||
| , defineProperties = Object.defineProperties | ||||
| , IteratorChain; | ||||
| IteratorChain = function (iterators) { | ||||
| defineProperties(this, { | ||||
| __iterators__: d("", iterators), | ||||
| __current__: d("w", iterators.shift()) | ||||
| }); | ||||
| }; | ||||
| if (setPrototypeOf) setPrototypeOf(IteratorChain, Iterator); | ||||
| IteratorChain.prototype = Object.create(Iterator.prototype, { | ||||
| constructor: d(IteratorChain), | ||||
| next: d(function () { | ||||
| var result; | ||||
| if (!this.__current__) return { done: true, value: undefined }; | ||||
| result = this.__current__.next(); | ||||
| while (result.done) { | ||||
| this.__current__ = this.__iterators__.shift(); | ||||
| if (!this.__current__) return { done: true, value: undefined }; | ||||
| result = this.__current__.next(); | ||||
| } | ||||
| return result; | ||||
| }) | ||||
| }); | ||||
| module.exports = function () { | ||||
| var iterators = [this]; | ||||
| push.apply(iterators, arguments); | ||||
| iterators.forEach(validIterable); | ||||
| return new IteratorChain(iterators); | ||||
| }; | ||||