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
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
// Copyright (C) 2019 Caio Lima (Igalia SL). All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: Every new evaluation of a class creates a different Private Name (private static field)
esid: sec-runtime-semantics-evaluate-name
info: |
ClassElementName : PrivateIdentifier
1. Let privateIdentifier be StringValue of PrivateIdentifier.
2. Let privateName be NewPrivateName(privateIdentifier).
3. Let scope be the running execution context's PrivateEnvironment.
4. Let scopeEnvRec be scope's EnvironmentRecord.
5. Perform ! scopeEnvRec.InitializeBinding(privateIdentifier, privateName).
6. Return privateName.
ClassTail : ClassHeritage { ClassBody }
...
27. Let staticFields be a new empty List.
28. For each ClassElement e in order from elements,
a. If IsStatic of e is false, then
...
b. Else,
i. Let field be the result of performing PropertyDefinitionEvaluation for m ClassElementEvaluation for e with arguments F and false.
c. If field is an abrupt completion, then
...
d. If field is not empty,
i. If IsStatic of e is false, append field to instanceFields.
ii. Otherwise, append field to staticFields.
...
34. For each item fieldRecord in order from staticFields,
a. Perform ? DefineField(F, field).
...
DefineField(receiver, fieldRecord)
...
8. If fieldName is a Private Name,
a. Perform ? PrivateFieldAdd(fieldName, receiver, initValue).
features: [class, class-static-fields-private]
---*/
let classStringExpression = `
return class {
static #m = 'test262';
static access() {
return this.#m;
}
}
`;
let createClass = function () {
let classFactoryFunction = new Function(classStringExpression);
return classFactoryFunction();
};
let C1 = createClass();
let C2 = createClass();
assert.sameValue(C1.access(), 'test262');
assert.sameValue(C2.access(), 'test262');
assert.throws(TypeError, function() {
C1.access.call(C2);
}, 'invalid access of c1 private static field');
assert.throws(TypeError, function() {
C2.access.call(C1);
}, 'invalid access of c2 private static field');
reportCompare(0, 0);
|
