gen-meth-dflt-ary-ptrn-elem-id-init-hole.js (2334B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/ary-ptrn-elem-id-init-hole.case 3 // - src/dstr-binding/default/gen-method-dflt.template 4 /*--- 5 description: Destructuring initializer with a "hole" (generator method (default parameter)) 6 esid: sec-generator-function-definitions-runtime-semantics-propertydefinitionevaluation 7 features: [generators, destructuring-binding, default-parameters] 8 flags: [generated] 9 info: | 10 GeneratorMethod : 11 * PropertyName ( StrictFormalParameters ) { GeneratorBody } 12 13 1. Let propKey be the result of evaluating PropertyName. 14 2. ReturnIfAbrupt(propKey). 15 3. If the function code for this GeneratorMethod is strict mode code, 16 let strict be true. Otherwise let strict be false. 17 4. Let scope be the running execution context's LexicalEnvironment. 18 5. Let closure be GeneratorFunctionCreate(Method, 19 StrictFormalParameters, GeneratorBody, scope, strict). 20 [...] 21 22 9.2.1 [[Call]] ( thisArgument, argumentsList) 23 24 [...] 25 7. Let result be OrdinaryCallEvaluateBody(F, argumentsList). 26 [...] 27 28 9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList ) 29 30 1. Let status be FunctionDeclarationInstantiation(F, argumentsList). 31 [...] 32 33 9.2.12 FunctionDeclarationInstantiation(func, argumentsList) 34 35 [...] 36 23. Let iteratorRecord be Record {[[iterator]]: 37 CreateListIterator(argumentsList), [[done]]: false}. 38 24. If hasDuplicates is true, then 39 [...] 40 25. Else, 41 b. Let formalStatus be IteratorBindingInitialization for formals with 42 iteratorRecord and env as arguments. 43 [...] 44 45 13.3.3.6 Runtime Semantics: IteratorBindingInitialization 46 SingleNameBinding : BindingIdentifier Initializeropt 47 [...] 6. If Initializer is present and v is undefined, then 48 a. Let defaultValue be the result of evaluating Initializer. 49 b. Let v be GetValue(defaultValue). 50 [...] 51 7. If environment is undefined, return PutValue(lhs, v). 8. Return InitializeReferencedBinding(lhs, v). 52 ---*/ 53 54 var callCount = 0; 55 var obj = { 56 *method([x = 23] = [,]) { 57 assert.sameValue(x, 23); 58 // another statement 59 callCount = callCount + 1; 60 } 61 }; 62 63 obj.method().next(); 64 assert.sameValue(callCount, 1, 'generator method invoked exactly once'); 65 66 reportCompare(0, 0);