spread-obj-mult-spread-getter.js (1669B)
1 // This file was procedurally generated from the following sources: 2 // - src/spread/obj-mult-spread-getter.case 3 // - src/spread/default/array.template 4 /*--- 5 description: Multiple Object Spread usage calls getter multiple times (Array initializer) 6 esid: sec-runtime-semantics-arrayaccumulation 7 features: [object-spread] 8 flags: [generated] 9 info: | 10 SpreadElement : ...AssignmentExpression 11 12 1. Let spreadRef be the result of evaluating AssignmentExpression. 13 2. Let spreadObj be ? GetValue(spreadRef). 14 3. Let iterator be ? GetIterator(spreadObj). 15 4. Repeat 16 a. Let next be ? IteratorStep(iterator). 17 b. If next is false, return nextIndex. 18 c. Let nextValue be ? IteratorValue(next). 19 d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)), 20 nextValue). 21 e. Assert: status is true. 22 f. Let nextIndex be nextIndex + 1. 23 24 Pending Runtime Semantics: PropertyDefinitionEvaluation 25 26 PropertyDefinition:...AssignmentExpression 27 28 1. Let exprValue be the result of evaluating AssignmentExpression. 29 2. Let fromValue be GetValue(exprValue). 30 3. ReturnIfAbrupt(fromValue). 31 4. Let excludedNames be a new empty List. 32 5. Return CopyDataProperties(object, fromValue, excludedNames). 33 34 ---*/ 35 let getterCallCount = 0; 36 let o = { 37 get a() { 38 return ++getterCallCount; 39 } 40 }; 41 42 43 var callCount = 0; 44 45 (function(obj) { 46 assert.sameValue(obj.a, 2); 47 assert.sameValue(obj.c, 4); 48 assert.sameValue(obj.d, 5); 49 assert.sameValue(Object.keys(obj).length, 3); 50 callCount += 1; 51 }.apply(null, [{...o, c: 4, d: 5, a: 42, ...o}])); 52 53 assert.sameValue(callCount, 1); 54 55 reportCompare(0, 0);