mirror of https://github.com/tc39/test262.git
47 lines
1.1 KiB
JavaScript
47 lines
1.1 KiB
JavaScript
// Copyright (C) 2017 Valerie Young. All rights reserved.
|
|
// This code is governed by the BSD license found in the LICENSE file.
|
|
|
|
/*---
|
|
description: Successfully access private field
|
|
esid: sec-getvalue
|
|
info: |
|
|
GetValue ( V )
|
|
...
|
|
5. If IsPropertyReference(V), then
|
|
...
|
|
b. If IsPrivateReference(V), then
|
|
i. Let env be the running execution context's PrivateNameEnvironment.
|
|
ii. Let field be ? ResolveBinding(GetReferencedName(V), env).
|
|
iii. Assert: field is a Private Name.
|
|
iv. Return ? PrivateFieldGet(field, base).
|
|
|
|
PrivateFieldGet (P, O )
|
|
1. Assert: P is a Private Name value.
|
|
2. If O is not an object, throw a TypeError exception.
|
|
3. Let entry be PrivateFieldFind(P, O).
|
|
4. If entry is empty, throw a TypeError exception.
|
|
5. Return entry.[[PrivateFieldValue]].
|
|
|
|
features: [class, class-fields-private]
|
|
---*/
|
|
|
|
class Outer {
|
|
#x = 42;
|
|
|
|
innerclass() {
|
|
var self = this;
|
|
|
|
return class extends Outer {
|
|
f() {
|
|
return self.#x;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
var Inner = new Outer().innerclass();
|
|
var i = new Inner();
|
|
var value = i.f();
|
|
|
|
assert.sameValue(value, 42)
|