54 lines
1.2 KiB
JavaScript
Executable file
54 lines
1.2 KiB
JavaScript
Executable file
'use strict';
|
|
|
|
var GetIntrinsic = require('get-intrinsic');
|
|
|
|
var $TypeError = GetIntrinsic('%TypeError%');
|
|
|
|
var $setProto = require('../helpers/setProto');
|
|
|
|
var OrdinaryGetPrototypeOf = require('./OrdinaryGetPrototypeOf');
|
|
var Type = require('./Type');
|
|
|
|
// https://262.ecma-international.org/7.0/#sec-ordinarysetprototypeof
|
|
|
|
module.exports = function OrdinarySetPrototypeOf(O, V) {
|
|
if (Type(V) !== 'Object' && Type(V) !== 'Null') {
|
|
throw new $TypeError('Assertion failed: V must be Object or Null');
|
|
}
|
|
/*
|
|
var extensible = IsExtensible(O);
|
|
var current = OrdinaryGetPrototypeOf(O);
|
|
if (SameValue(V, current)) {
|
|
return true;
|
|
}
|
|
if (!extensible) {
|
|
return false;
|
|
}
|
|
*/
|
|
try {
|
|
$setProto(O, V);
|
|
} catch (e) {
|
|
return false;
|
|
}
|
|
return OrdinaryGetPrototypeOf(O) === V;
|
|
/*
|
|
var p = V;
|
|
var done = false;
|
|
while (!done) {
|
|
if (p === null) {
|
|
done = true;
|
|
} else if (SameValue(p, O)) {
|
|
return false;
|
|
} else {
|
|
if (wat) {
|
|
done = true;
|
|
} else {
|
|
p = p.[[Prototype]];
|
|
}
|
|
}
|
|
}
|
|
O.[[Prototype]] = V;
|
|
return true;
|
|
*/
|
|
};
|