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Doodle3D-API/jspm_packages/npm/core-js@0.9.18/modules/$.iter-define.js

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2015-07-15 15:06:18 +02:00
/* */
var $def = require("./$.def"),
$redef = require("./$.redef"),
$ = require("./$"),
cof = require("./$.cof"),
$iter = require("./$.iter"),
SYMBOL_ITERATOR = require("./$.wks")('iterator'),
FF_ITERATOR = '@@iterator',
KEYS = 'keys',
VALUES = 'values',
Iterators = $iter.Iterators;
module.exports = function(Base, NAME, Constructor, next, DEFAULT, IS_SET, FORCE) {
$iter.create(Constructor, NAME, next);
function createMethod(kind) {
function $$(that) {
return new Constructor(that, kind);
}
switch (kind) {
case KEYS:
return function keys() {
return $$(this);
};
case VALUES:
return function values() {
return $$(this);
};
}
return function entries() {
return $$(this);
};
}
var TAG = NAME + ' Iterator',
proto = Base.prototype,
_native = proto[SYMBOL_ITERATOR] || proto[FF_ITERATOR] || DEFAULT && proto[DEFAULT],
_default = _native || createMethod(DEFAULT),
methods,
key;
if (_native) {
var IteratorPrototype = $.getProto(_default.call(new Base));
cof.set(IteratorPrototype, TAG, true);
if ($.FW && $.has(proto, FF_ITERATOR))
$iter.set(IteratorPrototype, $.that);
}
if ($.FW || FORCE)
$iter.set(proto, _default);
Iterators[NAME] = _default;
Iterators[TAG] = $.that;
if (DEFAULT) {
methods = {
keys: IS_SET ? _default : createMethod(KEYS),
values: DEFAULT == VALUES ? _default : createMethod(VALUES),
entries: DEFAULT != VALUES ? _default : createMethod('entries')
};
if (FORCE)
for (key in methods) {
if (!(key in proto))
$redef(proto, key, methods[key]);
}
else
$def($def.P + $def.F * $iter.BUGGY, NAME, methods);
}
};