mirror of
https://github.com/Doodle3D/Doodle3D-API
synced 2024-12-23 22:13:48 +01:00
47 lines
1.4 KiB
JavaScript
47 lines
1.4 KiB
JavaScript
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/* */
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'use strict';
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var $ = require("./$"),
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cof = require("./$.cof"),
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classof = cof.classof,
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assert = require("./$.assert"),
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assertObject = assert.obj,
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SYMBOL_ITERATOR = require("./$.wks")('iterator'),
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FF_ITERATOR = '@@iterator',
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Iterators = require("./$.shared")('iterators'),
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IteratorPrototype = {};
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setIterator(IteratorPrototype, $.that);
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function setIterator(O, value) {
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$.hide(O, SYMBOL_ITERATOR, value);
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if (FF_ITERATOR in [])
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$.hide(O, FF_ITERATOR, value);
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}
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module.exports = {
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BUGGY: 'keys' in [] && !('next' in [].keys()),
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Iterators: Iterators,
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step: function(done, value) {
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return {
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value: value,
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done: !!done
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};
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},
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is: function(it) {
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var O = Object(it),
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Symbol = $.g.Symbol;
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return (Symbol && Symbol.iterator || FF_ITERATOR) in O || SYMBOL_ITERATOR in O || $.has(Iterators, classof(O));
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},
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get: function(it) {
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var Symbol = $.g.Symbol,
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getIter;
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if (it != undefined) {
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getIter = it[Symbol && Symbol.iterator || FF_ITERATOR] || it[SYMBOL_ITERATOR] || Iterators[classof(it)];
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}
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assert($.isFunction(getIter), it, ' is not iterable!');
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return assertObject(getIter.call(it));
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},
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set: setIterator,
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create: function(Constructor, NAME, next, proto) {
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Constructor.prototype = $.create(proto || IteratorPrototype, {next: $.desc(1, next)});
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cof.set(Constructor, NAME + ' Iterator');
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}
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};
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