dflt-params-arg-val-not-undefined.js (3820B)
1 // This file was procedurally generated from the following sources: 2 // - src/function-forms/dflt-params-arg-val-not-undefined.case 3 // - src/function-forms/default/cls-decl-gen-meth-static.template 4 /*--- 5 description: Use of initializer when argument value is not `undefined` (static class expression generator method) 6 esid: sec-runtime-semantics-bindingclassdeclarationevaluation 7 features: [default-parameters, generators] 8 flags: [generated] 9 info: | 10 ClassDeclaration : class BindingIdentifier ClassTail 11 12 1. Let className be StringValue of BindingIdentifier. 13 2. Let value be the result of ClassDefinitionEvaluation of ClassTail with 14 argument className. 15 [...] 16 17 14.5.14 Runtime Semantics: ClassDefinitionEvaluation 18 19 21. For each ClassElement m in order from methods 20 a. If IsStatic of m is false, then 21 b. Else, 22 Let status be the result of performing PropertyDefinitionEvaluation for 23 m with arguments F and false. 24 [...] 25 26 14.4.13 Runtime Semantics: PropertyDefinitionEvaluation 27 28 GeneratorMethod : * PropertyName ( StrictFormalParameters ) { GeneratorBody } 29 30 1. Let propKey be the result of evaluating PropertyName. 31 2. ReturnIfAbrupt(propKey). 32 3. If the function code for this GeneratorMethod is strict mode code, 33 let strict be true. Otherwise let strict be false. 34 4. Let scope be the running execution context's LexicalEnvironment. 35 5. Let closure be GeneratorFunctionCreate(Method, 36 StrictFormalParameters, GeneratorBody, scope, strict). 37 38 9.2.1 [[Call]] ( thisArgument, argumentsList) 39 40 [...] 41 7. Let result be OrdinaryCallEvaluateBody(F, argumentsList). 42 [...] 43 44 9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList ) 45 46 1. Let status be FunctionDeclarationInstantiation(F, argumentsList). 47 [...] 48 49 9.2.12 FunctionDeclarationInstantiation(func, argumentsList) 50 51 [...] 52 23. Let iteratorRecord be Record {[[iterator]]: 53 CreateListIterator(argumentsList), [[done]]: false}. 54 24. If hasDuplicates is true, then 55 [...] 56 25. Else, 57 b. Let formalStatus be IteratorBindingInitialization for formals with 58 iteratorRecord and env as arguments. 59 [...] 60 61 62 14.1.19 Runtime Semantics: IteratorBindingInitialization 63 64 FormalsList : FormalsList , FormalParameter 65 66 [...] 67 23. Let iteratorRecord be Record {[[Iterator]]: 68 CreateListIterator(argumentsList), [[Done]]: false}. 69 24. If hasDuplicates is true, then 70 [...] 71 25. Else, 72 a. Perform ? IteratorBindingInitialization for formals with 73 iteratorRecord and env as arguments. 74 [...] 75 76 ---*/ 77 var obj = {}; 78 var falseCount = 0; 79 var stringCount = 0; 80 var nanCount = 0; 81 var zeroCount = 0; 82 var nullCount = 0; 83 var objCount = 0; 84 85 var callCount = 0; 86 class C { 87 static *method(aFalse = falseCount +=1, aString = stringCount += 1, aNaN = nanCount += 1, a0 = zeroCount += 1, aNull = nullCount += 1, aObj = objCount +=1) { 88 assert.sameValue(aFalse, false); 89 assert.sameValue(aString, ''); 90 assert.sameValue(aNaN, NaN); 91 assert.sameValue(a0, 0); 92 assert.sameValue(aNull, null); 93 assert.sameValue(aObj, obj); 94 callCount = callCount + 1; 95 } 96 } 97 98 C.method(false, '', NaN, 0, null, obj).next(); 99 100 // Stores a reference `ref` for case evaluation 101 var ref = C.method; 102 103 assert.sameValue(callCount, 1, 'method invoked exactly once'); 104 105 assert.sameValue(falseCount, 0, 'initializer not evaluated: false'); 106 assert.sameValue(stringCount, 0, 'initializer not evaluated: string'); 107 assert.sameValue(nanCount, 0, 'initializer not evaluated: NaN'); 108 assert.sameValue(zeroCount, 0, 'initializer not evaluated: 0'); 109 assert.sameValue(nullCount, 0, 'initializer not evaluated: null'); 110 assert.sameValue(objCount, 0, 'initializer not evaluated: object'); 111 112 reportCompare(0, 0);