prop-expr-obj-ref-non-strict.js (1825B)
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: SuperProperty's behavior as a non-strict reference 7 info: | 8 [...] 9 4. If the code matched by the syntactic production that is being evaluated is 10 strict mode code, let strict be true, else let strict be false. 11 5. Return ? MakeSuperPropertyReference(propertyKey, strict). 12 13 12.3.5.3 Runtime Semantics: MakeSuperPropertyReference 14 15 1. Let env be GetThisEnvironment( ). 16 2. If env.HasSuperBinding() is false, throw a ReferenceError exception. 17 3. Let actualThis be ? env.GetThisBinding(). 18 4. Let baseValue be ? env.GetSuperBase(). 19 5. Let bv be ? RequireObjectCoercible(baseValue). 20 6. Return a value of type Reference that is a Super Reference whose base 21 value component is bv, whose referenced name component is propertyKey, 22 whose thisValue component is actualThis, and whose strict reference flag 23 is strict. 24 25 6.2.3.2 PutValue 26 27 [...] 28 5. If IsUnresolvableReference(V) is true, then 29 [...] 30 6. Else if IsPropertyReference(V) is true, then 31 a. If HasPrimitiveBase(V) is true, then 32 [...] 33 b. Let succeeded be ? base.[[Set]](GetReferencedName(V), W, 34 GetThisValue(V)). 35 c. If succeeded is false and IsStrictReference(V) is true, throw a 36 TypeError exception. 37 d. Return. 38 flags: [noStrict] 39 ---*/ 40 41 var obj = { 42 method() { 43 super['x'] = 8; 44 Object.freeze(obj); 45 super['y'] = 9; 46 } 47 }; 48 49 obj.method(); 50 51 assert( 52 Object.prototype.hasOwnProperty.call(obj, 'x'), 53 "x is defined as an own property" 54 ); 55 assert( 56 !Object.prototype.hasOwnProperty.call(obj, 'y'), 57 "y is not defined as an own property after the object is frozen" 58 ); 59 60 reportCompare(0, 0);