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57 lines
2.0 KiB
57 lines
2.0 KiB
'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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, toStringTagSymbol = require('es6-symbol').toStringTag |
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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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, kinds = require('./iterator-kinds') |
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, defineProperties = Object.defineProperties, keys = Object.keys |
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, unBind = Iterator.prototype._unBind |
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, PrimitiveMapIterator; |
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PrimitiveMapIterator = module.exports = function (map, kind) { |
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if (!(this instanceof PrimitiveMapIterator)) { |
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return new PrimitiveMapIterator(map, kind); |
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} |
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Iterator.call(this, keys(map.__mapKeysData__), map); |
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if (!kind || !kinds[kind]) kind = 'key+value'; |
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defineProperties(this, { |
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__kind__: d('', kind), |
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__keysData__: d('w', map.__mapKeysData__), |
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__valuesData__: d('w', map.__mapValuesData__) |
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}); |
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}; |
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if (setPrototypeOf) setPrototypeOf(PrimitiveMapIterator, Iterator); |
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PrimitiveMapIterator.prototype = Object.create(Iterator.prototype, assign({ |
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constructor: d(PrimitiveMapIterator), |
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_resolve: d(function (i) { |
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if (this.__kind__ === 'value') return this.__valuesData__[this.__list__[i]]; |
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if (this.__kind__ === 'key') return this.__keysData__[this.__list__[i]]; |
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return [this.__keysData__[this.__list__[i]], |
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this.__valuesData__[this.__list__[i]]]; |
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}), |
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_unBind: d(function () { |
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this.__keysData__ = null; |
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this.__valuesData__ = null; |
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unBind.call(this); |
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}), |
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toString: d(function () { return '[object Map 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(PrimitiveMapIterator.prototype, toStringTagSymbol, |
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d('c', 'Map Iterator'));
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