blob: 9aebef3089576526e25860b4ac0eac7a9cf5e0b5 (
plain)
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
|
// Copyright (C) 2018 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-function.prototype.tostring
description: >
toString of built-in Function object
info: |
...
If func is a built-in Function object, then return an implementation-dependent String source code representation of func.
The representation must have the syntax of a NativeFunction.
...
NativeFunction:
function NativeFunctionAccessor_opt IdentifierName_opt ( FormalParameters ) { [ native code ] }
NativeFunctionAccessor :
get
set
includes: [nativeFunctionMatcher.js, wellKnownIntrinsicObjects.js]
features: [arrow-function, Reflect, Array.prototype.includes]
---*/
const visited = [];
function visit(ns, path) {
if (visited.includes(ns)) {
return;
}
visited.push(ns);
if (typeof ns === 'function') {
assertNativeFunction(ns, path);
}
if (typeof ns !== 'function' && (typeof ns !== 'object' || ns === null)) {
return;
}
const descriptors = Object.getOwnPropertyDescriptors(ns);
Reflect.ownKeys(descriptors)
.forEach((name) => {
const desc = descriptors[name];
const p = typeof name === 'symbol'
? `${path}[Symbol(${name.description})]`
: `${path}.${name}`;
if ('value' in desc) {
visit(desc.value, p);
} else {
visit(desc.get, p);
visit(desc.set, p);
}
});
}
WellKnownIntrinsicObjects.forEach((intrinsic) => {
visit(intrinsic.value, intrinsic.name);
});
assert.notSameValue(visited.length, 0);
reportCompare(0, 0);
|
