dflt-obj-ptrn-rest-val-obj.js (1936B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/obj-ptrn-rest-val-obj.case 3 // - src/dstr-binding/default/gen-func-expr-dflt.template 4 /*--- 5 description: Rest object contains just unextracted data (generator function expression (default parameter)) 6 esid: sec-generator-function-definitions-runtime-semantics-evaluation 7 features: [object-rest, generators, destructuring-binding, default-parameters] 8 flags: [generated] 9 includes: [propertyHelper.js] 10 info: | 11 GeneratorExpression : function * ( FormalParameters ) { GeneratorBody } 12 13 [...] 14 3. Let closure be GeneratorFunctionCreate(Normal, FormalParameters, 15 GeneratorBody, scope, strict). 16 [...] 17 18 9.2.1 [[Call]] ( thisArgument, argumentsList) 19 20 [...] 21 7. Let result be OrdinaryCallEvaluateBody(F, argumentsList). 22 [...] 23 24 9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList ) 25 26 1. Let status be FunctionDeclarationInstantiation(F, argumentsList). 27 [...] 28 29 9.2.12 FunctionDeclarationInstantiation(func, argumentsList) 30 31 [...] 32 23. Let iteratorRecord be Record {[[iterator]]: 33 CreateListIterator(argumentsList), [[done]]: false}. 34 24. If hasDuplicates is true, then 35 [...] 36 25. Else, 37 b. Let formalStatus be IteratorBindingInitialization for formals with 38 iteratorRecord and env as arguments. 39 [...] 40 ---*/ 41 42 var callCount = 0; 43 var f; 44 f = function*({a, b, ...rest} = {x: 1, y: 2, a: 5, b: 3}) { 45 assert.sameValue(rest.a, undefined); 46 assert.sameValue(rest.b, undefined); 47 48 verifyProperty(rest, "x", { 49 enumerable: true, 50 writable: true, 51 configurable: true, 52 value: 1 53 }); 54 55 verifyProperty(rest, "y", { 56 enumerable: true, 57 writable: true, 58 configurable: true, 59 value: 2 60 }); 61 callCount = callCount + 1; 62 }; 63 64 f().next(); 65 assert.sameValue(callCount, 1, 'generator function invoked exactly once'); 66 67 reportCompare(0, 0);