1 | 'use strict';
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2 | var $ = require('../internals/export');
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3 | var createIteratorConstructor = require('../internals/create-iterator-constructor');
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4 | var requireObjectCoercible = require('../internals/require-object-coercible');
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5 | var InternalStateModule = require('../internals/internal-state');
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6 | var StringMultibyteModule = require('../internals/string-multibyte');
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7 |
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8 | var codeAt = StringMultibyteModule.codeAt;
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9 | var charAt = StringMultibyteModule.charAt;
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10 | var STRING_ITERATOR = 'String Iterator';
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11 | var setInternalState = InternalStateModule.set;
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12 | var getInternalState = InternalStateModule.getterFor(STRING_ITERATOR);
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13 |
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14 |
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15 | var $StringIterator = createIteratorConstructor(function StringIterator(string) {
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16 | setInternalState(this, {
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17 | type: STRING_ITERATOR,
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18 | string: string,
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19 | index: 0
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20 | });
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21 | }, 'String', function next() {
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22 | var state = getInternalState(this);
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23 | var string = state.string;
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24 | var index = state.index;
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25 | var point;
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26 | if (index >= string.length) return { value: undefined, done: true };
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27 | point = charAt(string, index);
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28 | state.index += point.length;
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29 | return { value: { codePoint: codeAt(point, 0), position: index }, done: false };
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30 | });
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31 |
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32 |
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33 |
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34 | $({ target: 'String', proto: true }, {
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35 | codePoints: function codePoints() {
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36 | return new $StringIterator(String(requireObjectCoercible(this)));
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37 | }
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38 | });
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