tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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eval-body-proto-realm.js (1105B)

      1 // Copyright (C) 2016 the V8 project authors. All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 /*---
      4 esid: sec-generator-function-definitions-runtime-semantics-evaluatebody
      5 es6id: 14.4.11
      6 description: >
      7    Default [[Prototype]] value derived from realm of the generator function
      8 info: |
      9    1. Let G be ? OrdinaryCreateFromConstructor(functionObject,
     10       "%GeneratorPrototype%", « [[GeneratorState]], [[GeneratorContext]] »).
     11    [...]
     12 
     13    9.1.14 GetPrototypeFromConstructor
     14 
     15    [...]
     16    3. Let proto be ? Get(constructor, "prototype").
     17    4. If Type(proto) is not Object, then
     18       a. Let realm be ? GetFunctionRealm(constructor).
     19       b. Let proto be realm's intrinsic object named intrinsicDefaultProto.
     20    [...]
     21 features: [generators, cross-realm]
     22 ---*/
     23 
     24 var other = $262.createRealm().global;
     25 var g = other.eval('(0, function*() {})');
     26 var GeneratorPrototype = Object.getPrototypeOf(g.prototype);
     27 g.prototype = null;
     28 var instance;
     29 
     30 instance = g();
     31 
     32 assert.sameValue(Object.getPrototypeOf(instance), GeneratorPrototype);
     33 
     34 reportCompare(0, 0);