obj-rest-to-property-with-setter.js (1585B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-assignment/obj-rest-to-property-with-setter.case 3 // - src/dstr-assignment/default/for-of.template 4 /*--- 5 description: When DestructuringAssignmentTarget is an object property setter, its value should be binded as rest object. (For..of statement) 6 esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation 7 features: [object-rest, destructuring-binding] 8 flags: [generated] 9 info: | 10 IterationStatement : 11 for ( LeftHandSideExpression of AssignmentExpression ) Statement 12 13 1. Let keyResult be the result of performing ? ForIn/OfHeadEvaluation(« », 14 AssignmentExpression, iterate). 15 2. Return ? ForIn/OfBodyEvaluation(LeftHandSideExpression, Statement, 16 keyResult, assignment, labelSet). 17 18 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation 19 20 [...] 21 4. If destructuring is true and if lhsKind is assignment, then 22 a. Assert: lhs is a LeftHandSideExpression. 23 b. Let assignmentPattern be the parse of the source text corresponding to 24 lhs using AssignmentPattern as the goal symbol. 25 [...] 26 ---*/ 27 var settedValue; 28 var executedGetter = false; 29 var src = { 30 get y() { executedGetter = true; }, 31 set y(v) { 32 settedValue = v; 33 } 34 } 35 src.y = undefined; 36 37 var counter = 0; 38 39 for ({...src.y} of [{ x: 1, y: 2}]) { 40 assert.sameValue(settedValue.x, 1); 41 assert.sameValue(settedValue.y, 2); 42 assert(!executedGetter, "The property should not be accessed"); 43 44 counter += 1; 45 } 46 47 assert.sameValue(counter, 1); 48 49 reportCompare(0, 0);