git.r.bdr.sh - rbdr/dotfiles/blob

   1 'use strict';
   2
   3 var setPrototypeOf = require('es5-ext/object/set-prototype-of')
   4   , contains       = require('es5-ext/string/#/contains')
   5   , d              = require('d')
   6   , Iterator       = require('./')
   7
   8   , defineProperty = Object.defineProperty
   9   , ArrayIterator;
  10
  11 ArrayIterator = module.exports = function (arr, kind) {
  12         if (!(this instanceof ArrayIterator)) return new ArrayIterator(arr, kind);
  13         Iterator.call(this, arr);
  14         if (!kind) kind = 'value';
  15         else if (contains.call(kind, 'key+value')) kind = 'key+value';
  16         else if (contains.call(kind, 'key')) kind = 'key';
  17         else kind = 'value';
  18         defineProperty(this, '__kind__', d('', kind));
  19 };
  20 if (setPrototypeOf) setPrototypeOf(ArrayIterator, Iterator);
  21
  22 ArrayIterator.prototype = Object.create(Iterator.prototype, {
  23         constructor: d(ArrayIterator),
  24         _resolve: d(function (i) {
  25                 if (this.__kind__ === 'value') return this.__list__[i];
  26                 if (this.__kind__ === 'key+value') return [i, this.__list__[i]];
  27                 return i;
  28         }),
  29         toString: d(function () { return '[object Array Iterator]'; })
  30 });