Source code
Revision control
Copy as Markdown
Other Tools
// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-super-keyword
es6id: 12.3.5
description: Value of reference returned by SuperProperty (from arrow function)
info: |
[...]
4. If the code matched by the syntactic production that is being evaluated is
strict mode code, let strict be true, else let strict be false.
5. Return ? MakeSuperPropertyReference(propertyKey, strict).
12.3.5.3 Runtime Semantics: MakeSuperPropertyReference
1. Let env be GetThisEnvironment( ).
2. If env.HasSuperBinding() is false, throw a ReferenceError exception.
3. Let actualThis be ? env.GetThisBinding().
4. Let baseValue be ? env.GetSuperBase().
5. Let bv be ? RequireObjectCoercible(baseValue).
6. Return a value of type Reference that is a Super Reference whose base
value component is bv, whose referenced name component is propertyKey,
whose thisValue component is actualThis, and whose strict reference flag
is strict.
features: [arrow-function]
---*/
var fromA, fromB;
var A = { fromA: 'a', fromB: 'a' };
var B = { fromB: 'b' };
Object.setPrototypeOf(B, A);
var obj = {
fromA: 'c',
fromB: 'c',
method() {
fromA = (() => { return super['fromA']; })();
fromB = (() => { return super['fromB']; })();
}
};
Object.setPrototypeOf(obj, B);
obj.method();
assert.sameValue(fromA, 'a');
assert.sameValue(fromB, 'b');
reportCompare(0, 0);