dflt-params-ref-prior.js (2579B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/function-forms/dflt-params-ref-prior.case 4 // - src/function-forms/default/cls-decl-async-gen-meth.template 5 /*--- 6 description: Referencing a parameter that occurs earlier in the ParameterList (class declaration async generator method) 7 esid: sec-class-definitions-runtime-semantics-evaluation 8 features: [default-parameters, async-iteration] 9 flags: [generated, async] 10 info: | 11 ClassDeclaration : class BindingIdentifier ClassTail 12 13 1. Let className be StringValue of BindingIdentifier. 14 2. Let value be the result of ClassDefinitionEvaluation of ClassTail with 15 argument className. 16 [...] 17 18 14.5.14 Runtime Semantics: ClassDefinitionEvaluation 19 20 21. For each ClassElement m in order from methods 21 a. If IsStatic of m is false, then 22 i. Let status be the result of performing 23 PropertyDefinitionEvaluation for m with arguments proto and 24 false. 25 [...] 26 27 Runtime Semantics: PropertyDefinitionEvaluation 28 29 AsyncGeneratorMethod : 30 async [no LineTerminator here] * PropertyName ( UniqueFormalParameters ) 31 { AsyncGeneratorBody } 32 33 1. Let propKey be the result of evaluating PropertyName. 34 2. ReturnIfAbrupt(propKey). 35 3. If the function code for this AsyncGeneratorMethod is strict mode code, let strict be true. 36 Otherwise let strict be false. 37 4. Let scope be the running execution context's LexicalEnvironment. 38 5. Let closure be ! AsyncGeneratorFunctionCreate(Method, UniqueFormalParameters, 39 AsyncGeneratorBody, scope, strict). 40 [...] 41 42 43 14.1.19 Runtime Semantics: IteratorBindingInitialization 44 45 FormalsList : FormalsList , FormalParameter 46 47 1. Let status be the result of performing IteratorBindingInitialization for 48 FormalsList using iteratorRecord and environment as the arguments. 49 2. ReturnIfAbrupt(status). 50 3. Return the result of performing IteratorBindingInitialization for 51 FormalParameter using iteratorRecord and environment as the arguments. 52 53 ---*/ 54 var x = 0; 55 56 var callCount = 0; 57 class C { 58 async *method(x, y = x, z = y) { 59 assert.sameValue(x, 3, 'first argument value'); 60 assert.sameValue(y, 3, 'second argument value'); 61 assert.sameValue(z, 3, 'third argument value'); 62 callCount = callCount + 1; 63 } 64 } 65 66 // Stores a reference `ref` for case evaluation 67 var ref = C.prototype.method; 68 69 ref(3).next().then(() => { 70 assert.sameValue(callCount, 1, 'method invoked exactly once'); 71 }).then($DONE, $DONE);