prop-dot-cls-val-from-eval.js (1510B)
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-super-keyword 5 es6id: 12.3.5 6 description: > 7 Value of reference returned by SuperProperty (from eval code) 8 info: | 9 1. Let propertyKey be StringValue of IdentifierName. 10 2. If the code matched by the syntactic production that is being evaluated is 11 strict mode code, let strict be true, else let strict be false. 12 3. Return ? MakeSuperPropertyReference(propertyKey, strict). 13 14 12.3.5.3 Runtime Semantics: MakeSuperPropertyReference 15 16 1. Let env be GetThisEnvironment( ). 17 2. If env.HasSuperBinding() is false, throw a ReferenceError exception. 18 3. Let actualThis be ? env.GetThisBinding(). 19 4. Let baseValue be ? env.GetSuperBase(). 20 5. Let bv be ? RequireObjectCoercible(baseValue). 21 6. Return a value of type Reference that is a Super Reference whose base 22 value component is bv, whose referenced name component is propertyKey, 23 whose thisValue component is actualThis, and whose strict reference flag 24 is strict. 25 features: [class] 26 ---*/ 27 28 var fromA, fromB; 29 class A {} 30 class B extends A {} 31 class C extends B { 32 method() { 33 fromA = eval('super.fromA;'); 34 fromB = eval('super.fromB;'); 35 } 36 } 37 38 A.prototype.fromA = 'a'; 39 A.prototype.fromB = 'a'; 40 B.prototype.fromB = 'b'; 41 C.prototype.fromA = 'c'; 42 C.prototype.fromB = 'c'; 43 44 C.prototype.method(); 45 46 assert.sameValue(fromA, 'a'); 47 assert.sameValue(fromB, 'b'); 48 49 reportCompare(0, 0);