1 | 'use strict';
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2 | var aCallable = require('../internals/a-callable');
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3 | var anObject = require('../internals/an-object');
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4 | var call = require('../internals/function-call');
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5 | var toIntegerOrInfinity = require('../internals/to-integer-or-infinity');
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6 | var getIteratorDirect = require('../internals/get-iterator-direct');
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7 |
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8 | var INVALID_SIZE = 'Invalid size';
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9 | var $RangeError = RangeError;
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10 | var $TypeError = TypeError;
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11 | var max = Math.max;
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12 |
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13 | var SetRecord = function (set, intSize) {
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14 | this.set = set;
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15 | this.size = max(intSize, 0);
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16 | this.has = aCallable(set.has);
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17 | this.keys = aCallable(set.keys);
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18 | };
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19 |
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20 | SetRecord.prototype = {
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21 | getIterator: function () {
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22 | return getIteratorDirect(anObject(call(this.keys, this.set)));
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23 | },
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24 | includes: function (it) {
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25 | return call(this.has, this.set, it);
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26 | }
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27 | };
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28 |
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29 |
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30 |
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31 | module.exports = function (obj) {
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32 | anObject(obj);
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33 | var numSize = +obj.size;
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34 |
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35 |
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36 | if (numSize !== numSize) throw new $TypeError(INVALID_SIZE);
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37 | var intSize = toIntegerOrInfinity(numSize);
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38 | if (intSize < 0) throw new $RangeError(INVALID_SIZE);
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39 | return new SetRecord(obj, intSize);
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40 | };
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