| // This file was procedurally generated from the following sources: |
| // - src/function-forms/dflt-params-ref-self.case |
| // - src/function-forms/error/cls-expr-async-gen-meth.template |
| /*--- |
| description: Referencing a parameter from within its own initializer (class expression async generator method) |
| esid: sec-class-definitions-runtime-semantics-evaluation |
| features: [default-parameters, async-iteration] |
| flags: [generated] |
| info: | |
| ClassExpression : class BindingIdentifieropt ClassTail |
| |
| 1. If BindingIdentifieropt is not present, let className be undefined. |
| 2. Else, let className be StringValue of BindingIdentifier. |
| 3. Let value be the result of ClassDefinitionEvaluation of ClassTail |
| with argument className. |
| [...] |
| |
| 14.5.14 Runtime Semantics: ClassDefinitionEvaluation |
| |
| 21. For each ClassElement m in order from methods |
| a. If IsStatic of m is false, then |
| i. Let status be the result of performing |
| PropertyDefinitionEvaluation for m with arguments proto and |
| false. |
| [...] |
| |
| 14.4.13 Runtime Semantics: PropertyDefinitionEvaluation |
| |
| 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. |
| [...] |
| |
| |
| 14.1.19 Runtime Semantics: IteratorBindingInitialization |
| |
| FormalsList : FormalsList , FormalParameter |
| |
| 1. Let status be the result of performing IteratorBindingInitialization for |
| FormalsList using iteratorRecord and environment as the arguments. |
| 2. ReturnIfAbrupt(status). |
| 3. Return the result of performing IteratorBindingInitialization for |
| FormalParameter using iteratorRecord and environment as the arguments. |
| |
| ---*/ |
| var x = 0; |
| |
| var callCount = 0; |
| var C = class { |
| async *method(x = x) { |
| |
| callCount = callCount + 1; |
| } |
| }; |
| |
| assert.throws(ReferenceError, function() { |
| C.prototype.method(); |
| }); |
| assert.sameValue(callCount, 0, 'method body not evaluated'); |