meth-ary-ptrn-rest-id-exhausted.js (2116B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/ary-ptrn-rest-id-exhausted.case 3 // - src/dstr-binding/default/meth.template 4 /*--- 5 description: RestElement applied to an exhausted iterator (method) 6 esid: sec-runtime-semantics-definemethod 7 features: [Symbol.iterator, destructuring-binding] 8 flags: [generated] 9 info: | 10 MethodDefinition : PropertyName ( StrictFormalParameters ) { FunctionBody } 11 12 [...] 13 6. Let closure be FunctionCreate(kind, StrictFormalParameters, 14 FunctionBody, scope, strict). If functionPrototype was passed as a 15 parameter then pass its value as the functionPrototype optional argument 16 of FunctionCreate. 17 [...] 18 19 9.2.1 [[Call]] ( thisArgument, argumentsList) 20 21 [...] 22 7. Let result be OrdinaryCallEvaluateBody(F, argumentsList). 23 [...] 24 25 9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList ) 26 27 1. Let status be FunctionDeclarationInstantiation(F, argumentsList). 28 [...] 29 30 9.2.12 FunctionDeclarationInstantiation(func, argumentsList) 31 32 [...] 33 23. Let iteratorRecord be Record {[[iterator]]: 34 CreateListIterator(argumentsList), [[done]]: false}. 35 24. If hasDuplicates is true, then 36 [...] 37 25. Else, 38 b. Let formalStatus be IteratorBindingInitialization for formals with 39 iteratorRecord and env as arguments. 40 [...] 41 42 13.3.3.6 Runtime Semantics: IteratorBindingInitialization 43 BindingRestElement : ... BindingIdentifier 44 1. Let lhs be ResolveBinding(StringValue of BindingIdentifier, 45 environment). 46 2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat, 47 [...] 48 b. If iteratorRecord.[[done]] is true, then 49 i. If environment is undefined, return PutValue(lhs, A). 50 ii. Return InitializeReferencedBinding(lhs, A). 51 52 ---*/ 53 54 var callCount = 0; 55 var obj = { 56 method([, , ...x]) { 57 assert(Array.isArray(x)); 58 assert.sameValue(x.length, 0); 59 callCount = callCount + 1; 60 } 61 }; 62 63 obj.method([1, 2]); 64 assert.sameValue(callCount, 1, 'method invoked exactly once'); 65 66 reportCompare(0, 0);