| // This file was procedurally generated from the following sources: |
| // - src/function-forms/dflt-params-trailing-comma.case |
| // - src/function-forms/default/gen-meth.template |
| /*--- |
| description: A trailing comma should not increase the respective length, using default parameters (generator method) |
| esid: sec-generator-function-definitions-runtime-semantics-propertydefinitionevaluation |
| features: [generators] |
| flags: [generated] |
| info: | |
| GeneratorMethod : |
| * PropertyName ( StrictFormalParameters ) { GeneratorBody } |
| |
| 1. Let propKey be the result of evaluating PropertyName. |
| 2. ReturnIfAbrupt(propKey). |
| 3. If the function code for this GeneratorMethod is strict mode code, |
| let strict be true. Otherwise let strict be false. |
| 4. Let scope be the running execution context's LexicalEnvironment. |
| 5. Let closure be GeneratorFunctionCreate(Method, |
| StrictFormalParameters, GeneratorBody, scope, strict). |
| [...] |
| |
| 9.2.1 [[Call]] ( thisArgument, argumentsList) |
| |
| [...] |
| 7. Let result be OrdinaryCallEvaluateBody(F, argumentsList). |
| [...] |
| |
| 9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList ) |
| |
| 1. Let status be FunctionDeclarationInstantiation(F, argumentsList). |
| [...] |
| |
| 9.2.12 FunctionDeclarationInstantiation(func, argumentsList) |
| |
| [...] |
| 23. Let iteratorRecord be Record {[[iterator]]: |
| CreateListIterator(argumentsList), [[done]]: false}. |
| 24. If hasDuplicates is true, then |
| [...] |
| 25. Else, |
| b. Let formalStatus be IteratorBindingInitialization for formals with |
| iteratorRecord and env as arguments. |
| [...] |
| |
| |
| Trailing comma in the parameters list |
| |
| 14.1 Function Definitions |
| |
| FormalParameters[Yield, Await] : FormalParameterList[?Yield, ?Await] , |
| ---*/ |
| |
| var callCount = 0; |
| var obj = { |
| *method(a, b = 39,) { |
| assert.sameValue(a, 42); |
| assert.sameValue(b, 39); |
| callCount = callCount + 1; |
| } |
| }; |
| |
| obj.method(42, undefined, 1).next(); |
| |
| // Stores a reference `ref` for case evaluation |
| var ref = obj.method; |
| |
| assert.sameValue(callCount, 1, 'generator method invoked exactly once'); |
| |
| assert.sameValue(ref.length, 1, 'length is properly set'); |