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
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
// 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-json.parse
es6id: 24.3.1
description: Behavior when revived value is a Proxy exotic object
info: |
[...]
7. If IsCallable(reviver) is true, then
a. Let root be ObjectCreate(%ObjectPrototype%).
b. Let rootName be the empty String.
c. Let status be CreateDataProperty(root, rootName, unfiltered).
d. Assert: status is true.
e. Return ? InternalizeJSONProperty(root, rootName).
24.3.1.1 Runtime Semantics: InternalizeJSONProperty
[...]
2. If Type(val) is Object, then
a. Let isArray be ? IsArray(val).
b. If isArray is true, then
[...]
c. Else,
[...]
7.2.2 IsArray
[...]
3. If argument is a Proxy exotic object, then
a. If the value of the [[ProxyHandler]] internal slot of argument is null,
throw a TypeError exception.
b. Let target be the value of the [[ProxyTarget]] internal slot of
argument.
c. Return ? IsArray(target).
features: [Proxy]
---*/
var objectProxy = new Proxy({
length: 0,
other: 0
}, {});
var arrayProxy = new Proxy([], {});
var arrayProxyProxy = new Proxy(arrayProxy, {});
var visitedOther, injectProxy;
arrayProxy.other = 0;
injectProxy = function(name, val) {
if (name === 'other') {
visitedOther = true;
}
this[1] = objectProxy;
return val;
};
visitedOther = false;
JSON.parse('[null, null]', injectProxy);
assert.sameValue(visitedOther, true, 'proxy for ordinary object');
injectProxy = function(name, val) {
if (name === 'other') {
visitedOther = true;
}
this[1] = arrayProxy;
return val;
};
visitedOther = false;
JSON.parse('[null, null]', injectProxy);
assert.sameValue(visitedOther, false, 'proxy for array');
injectProxy = function(name, val) {
if (name === 'other') {
visitedOther = true;
}
this[1] = arrayProxyProxy;
return val;
};
visitedOther = false;
JSON.parse('[null, null]', injectProxy);
assert.sameValue(visitedOther, false, 'proxy for array proxy');
|
