lepu-test-platform-web/node_modules/es6-set/lib/primitive-iterator.js

54 lines
1.8 KiB
JavaScript

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