blob: acf74dd326c1f4d01295d549d2fb5fa74458a961 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
(function(global, shared, exports) {
"use strict";
%CheckIsBootstrapping();
var GlobalObject = global.Object;
// ES6, draft 04-03-15, section 19.1.2.1
function ObjectAssign(target, sources) {
var to = TO_OBJECT_INLINE(target);
var argsLen = %_ArgumentsLength();
if (argsLen < 2) return to;
for (var i = 1; i < argsLen; ++i) {
var nextSource = %_Arguments(i);
if (IS_NULL_OR_UNDEFINED(nextSource)) {
continue;
}
var from = TO_OBJECT_INLINE(nextSource);
var keys = $ownPropertyKeys(from);
var len = keys.length;
for (var j = 0; j < len; ++j) {
var key = keys[j];
if (%IsPropertyEnumerable(from, key)) {
var propValue = from[key];
to[key] = propValue;
}
}
}
return to;
}
// Set up non-enumerable functions on the Object object.
$installFunctions(GlobalObject, DONT_ENUM, [
"assign", ObjectAssign
]);
})
|
