tor-browser

The Tor Browser
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accessor-name-computed-yield-expr.js (952B)

      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-object-initializer-runtime-semantics-evaluation
      5 es6id: 12.2.6.8
      6 description: >
      7  The `yield` keyword behaves as a YieldExpression within a generator function
      8 info: |
      9  12.2.6.7 Runtime Semantics: Evaluation
     10 
     11  [...]
     12 
     13  ComputedPropertyName : [ AssignmentExpression ]
     14 
     15  1. Let exprValue be the result of evaluating AssignmentExpression.
     16  2. Let propName be ? GetValue(exprValue).
     17  3. Return ? ToPropertyKey(propName).
     18 features: [generators]
     19 ---*/
     20 
     21 var yieldSet, obj, iter;
     22 function* g() {
     23  obj = {
     24    get [yield]() { return 'get yield'; },
     25    set [yield](param) { yieldSet = param; }
     26  };
     27 }
     28 
     29 iter = g();
     30 
     31 iter.next();
     32 iter.next('first');
     33 iter.next('second');
     34 
     35 assert.sameValue(obj.first, 'get yield');
     36 
     37 obj.second = 'set yield';
     38 
     39 assert.sameValue(yieldSet, 'set yield');
     40 
     41 reportCompare(0, 0);