dflt-params-trailing-comma.js (2574B)
1 // This file was procedurally generated from the following sources: 2 // - src/function-forms/dflt-params-trailing-comma.case 3 // - src/function-forms/default/cls-decl-meth.template 4 /*--- 5 description: A trailing comma should not increase the respective length, using default parameters (class expression method) 6 esid: sec-runtime-semantics-bindingclassdeclarationevaluation 7 flags: [generated] 8 info: | 9 ClassDeclaration : class BindingIdentifier ClassTail 10 11 1. Let className be StringValue of BindingIdentifier. 12 2. Let value be the result of ClassDefinitionEvaluation of ClassTail with 13 argument className. 14 [...] 15 16 14.5.14 Runtime Semantics: ClassDefinitionEvaluation 17 18 21. For each ClassElement m in order from methods 19 a. If IsStatic of m is false, then 20 i. Let status be the result of performing 21 PropertyDefinitionEvaluation for m with arguments proto and 22 false. 23 [...] 24 25 14.3.8 Runtime Semantics: DefineMethod 26 27 MethodDefinition : PropertyName ( StrictFormalParameters ) { FunctionBody } 28 29 [...] 30 6. Let closure be FunctionCreate(kind, StrictFormalParameters, FunctionBody, 31 scope, strict). If functionPrototype was passed as a parameter then pass its 32 value as the functionPrototype optional argument of FunctionCreate. 33 [...] 34 35 9.2.1 [[Call]] ( thisArgument, argumentsList) 36 37 [...] 38 7. Let result be OrdinaryCallEvaluateBody(F, argumentsList). 39 [...] 40 41 9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList ) 42 43 1. Let status be FunctionDeclarationInstantiation(F, argumentsList). 44 [...] 45 46 9.2.12 FunctionDeclarationInstantiation(func, argumentsList) 47 48 [...] 49 23. Let iteratorRecord be Record {[[iterator]]: 50 CreateListIterator(argumentsList), [[done]]: false}. 51 24. If hasDuplicates is true, then 52 [...] 53 25. Else, 54 b. Let formalStatus be IteratorBindingInitialization for formals with 55 iteratorRecord and env as arguments. 56 [...] 57 58 Trailing comma in the parameters list 59 60 14.1 Function Definitions 61 62 FormalParameters[Yield, Await] : FormalParameterList[?Yield, ?Await] , 63 ---*/ 64 65 var callCount = 0; 66 class C { 67 method(a, b = 39,) { 68 assert.sameValue(a, 42); 69 assert.sameValue(b, 39); 70 callCount = callCount + 1; 71 } 72 } 73 74 C.prototype.method(42, undefined, 1); 75 76 // Stores a reference `ref` for case evaluation 77 var ref = C.prototype.method; 78 79 assert.sameValue(callCount, 1, 'method invoked exactly once'); 80 81 assert.sameValue(ref.length, 1, 'length is properly set'); 82 83 reportCompare(0, 0);