54 lines
1.8 KiB
JavaScript
54 lines
1.8 KiB
JavaScript
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'use strict';
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var clear = require('es5-ext/array/#/clear')
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, assign = require('es5-ext/object/assign')
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, setPrototypeOf = require('es5-ext/object/set-prototype-of')
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, contains = require('es5-ext/string/#/contains')
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, d = require('d')
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, autoBind = require('d/auto-bind')
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, Iterator = require('es6-iterator')
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, toStringTagSymbol = require('es6-symbol').toStringTag
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, defineProperties = Object.defineProperties, keys = Object.keys
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, unBind = Iterator.prototype._unBind
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, PrimitiveSetIterator;
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PrimitiveSetIterator = module.exports = function (set, kind) {
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if (!(this instanceof PrimitiveSetIterator)) {
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return new PrimitiveSetIterator(set, kind);
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}
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Iterator.call(this, keys(set.__setData__), set);
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kind = (!kind || !contains.call(kind, 'key+value')) ? 'value' : 'key+value';
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defineProperties(this, {
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__kind__: d('', kind),
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__data__: d('w', set.__setData__)
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});
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};
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if (setPrototypeOf) setPrototypeOf(PrimitiveSetIterator, Iterator);
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PrimitiveSetIterator.prototype = Object.create(Iterator.prototype, assign({
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constructor: d(PrimitiveSetIterator),
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_resolve: d(function (i) {
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var value = this.__data__[this.__list__[i]];
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return (this.__kind__ === 'value') ? value : [value, value];
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}),
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_unBind: d(function () {
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this.__data__ = null;
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unBind.call(this);
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}),
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toString: d(function () { return '[object Set Iterator]'; })
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}, autoBind({
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_onAdd: d(function (key) { this.__list__.push(key); }),
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_onDelete: d(function (key) {
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var index = this.__list__.lastIndexOf(key);
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if (index < this.__nextIndex__) return;
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this.__list__.splice(index, 1);
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}),
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_onClear: d(function () {
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clear.call(this.__list__);
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this.__nextIndex__ = 0;
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})
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})));
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Object.defineProperty(PrimitiveSetIterator.prototype, toStringTagSymbol,
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d('c', 'Set Iterator'));
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