meth-obj-ptrn-prop-ary.js (2783B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/obj-ptrn-prop-ary.case 3 // - src/dstr-binding/default/cls-expr-meth.template 4 /*--- 5 description: Object binding pattern with "nested" array binding pattern not using initializer (class expression method) 6 esid: sec-class-definitions-runtime-semantics-evaluation 7 features: [destructuring-binding] 8 flags: [generated] 9 info: | 10 ClassExpression : class BindingIdentifieropt ClassTail 11 12 1. If BindingIdentifieropt is not present, let className be undefined. 13 2. Else, let className be StringValue of BindingIdentifier. 14 3. Let value be the result of ClassDefinitionEvaluation of ClassTail 15 with 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 14.3.8 Runtime Semantics: DefineMethod 28 29 MethodDefinition : PropertyName ( StrictFormalParameters ) { FunctionBody } 30 31 [...] 32 6. Let closure be FunctionCreate(kind, StrictFormalParameters, FunctionBody, 33 scope, strict). If functionPrototype was passed as a parameter then pass its 34 value as the functionPrototype optional argument of FunctionCreate. 35 [...] 36 37 9.2.1 [[Call]] ( thisArgument, argumentsList) 38 39 [...] 40 7. Let result be OrdinaryCallEvaluateBody(F, argumentsList). 41 [...] 42 43 9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList ) 44 45 1. Let status be FunctionDeclarationInstantiation(F, argumentsList). 46 [...] 47 48 9.2.12 FunctionDeclarationInstantiation(func, argumentsList) 49 50 [...] 51 23. Let iteratorRecord be Record {[[iterator]]: 52 CreateListIterator(argumentsList), [[done]]: false}. 53 24. If hasDuplicates is true, then 54 [...] 55 25. Else, 56 b. Let formalStatus be IteratorBindingInitialization for formals with 57 iteratorRecord and env as arguments. 58 [...] 59 60 13.3.3.7 Runtime Semantics: KeyedBindingInitialization 61 62 [...] 63 3. If Initializer is present and v is undefined, then 64 [...] 65 4. Return the result of performing BindingInitialization for BindingPattern 66 passing v and environment as arguments. 67 ---*/ 68 69 var callCount = 0; 70 var C = class { 71 method({ w: [x, y, z] = [4, 5, 6] }) { 72 assert.sameValue(x, 7); 73 assert.sameValue(y, undefined); 74 assert.sameValue(z, undefined); 75 76 assert.throws(ReferenceError, function() { 77 w; 78 }); 79 callCount = callCount + 1; 80 } 81 }; 82 83 new C().method({ w: [7, undefined, ] }); 84 assert.sameValue(callCount, 1, 'method invoked exactly once'); 85 86 reportCompare(0, 0);