| // Copyright (C) 2020 Alexey Shvayka. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| /*--- |
| esid: sec-createdynamicfunction |
| description: > |
| While default [[Prototype]] value derives from realm of the newTarget, |
| "prototype" object inherits from %Object.prototype% of constructor's realm. |
| info: | |
| Function ( p1, p2, … , pn, body ) |
| |
| [...] |
| 3. Return ? CreateDynamicFunction(C, NewTarget, normal, args). |
| |
| CreateDynamicFunction ( constructor, newTarget, kind, args ) |
| |
| [...] |
| 18. Let proto be ? GetPrototypeFromConstructor(newTarget, fallbackProto). |
| 19. Let realmF be the current Realm Record. |
| 20. Let scope be realmF.[[GlobalEnv]]. |
| 21. Let F be ! OrdinaryFunctionCreate(proto, parameters, body, non-lexical-this, scope). |
| [...] |
| 25. Else if kind is normal, perform MakeConstructor(F). |
| [...] |
| 30. Return F. |
| |
| MakeConstructor ( F [ , writablePrototype [ , prototype ] ] ) |
| |
| [...] |
| 7. If prototype is not present, then |
| a. Set prototype to OrdinaryObjectCreate(%Object.prototype%). |
| [...] |
| 8. Perform ! DefinePropertyOrThrow(F, "prototype", PropertyDescriptor {[[Value]]: prototype, |
| [[Writable]]: writablePrototype, [[Enumerable]]: false, [[Configurable]]: false }). |
| features: [cross-realm, Reflect] |
| ---*/ |
| |
| var realmA = $262.createRealm().global; |
| realmA.calls = 0; |
| |
| var realmB = $262.createRealm().global; |
| var newTarget = new realmB.Function(); |
| newTarget.prototype = null; |
| |
| var fn = Reflect.construct(realmA.Function, ["calls += 1;"], newTarget); |
| assert.sameValue(Object.getPrototypeOf(fn), realmB.Function.prototype); |
| assert.sameValue(Object.getPrototypeOf(fn.prototype), realmA.Object.prototype); |
| |
| assert(new fn() instanceof realmA.Object); |
| assert.sameValue(realmA.calls, 1); |