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// 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, utils) {
"use strict";
%CheckIsBootstrapping();
// -------------------------------------------------------------------
// Imports
var GlobalObject = global.Object;
var OwnPropertyKeys;
utils.Import(function(from) {
OwnPropertyKeys = from.OwnPropertyKeys;
});
// -------------------------------------------------------------------
// 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.
utils.InstallFunctions(GlobalObject, DONT_ENUM, [
"assign", ObjectAssign
]);
})
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