// This file was procedurally generated from the following sources: // - src/dstr-binding/ary-ptrn-rest-ary-empty.case // - src/dstr-binding/default/cls-expr-meth.template /*--- description: Rest element containing an "empty" array pattern (class expression method) esid: sec-class-definitions-runtime-semantics-evaluation es6id: 14.5.16 features: [generators, destructuring-binding] flags: [generated] info: | ClassExpression : class BindingIdentifieropt ClassTail 1. If BindingIdentifieropt is not present, let className be undefined. 2. Else, let className be StringValue of BindingIdentifier. 3. Let value be the result of ClassDefinitionEvaluation of ClassTail with argument className. [...] 14.5.14 Runtime Semantics: ClassDefinitionEvaluation 21. For each ClassElement m in order from methods a. If IsStatic of m is false, then i. Let status be the result of performing PropertyDefinitionEvaluation for m with arguments proto and false. [...] 14.3.8 Runtime Semantics: DefineMethod MethodDefinition : PropertyName ( StrictFormalParameters ) { FunctionBody } [...] 6. Let closure be FunctionCreate(kind, StrictFormalParameters, FunctionBody, scope, strict). If functionPrototype was passed as a parameter then pass its value as the functionPrototype optional argument of FunctionCreate. [...] 9.2.1 [[Call]] ( thisArgument, argumentsList) [...] 7. Let result be OrdinaryCallEvaluateBody(F, argumentsList). [...] 9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList ) 1. Let status be FunctionDeclarationInstantiation(F, argumentsList). [...] 9.2.12 FunctionDeclarationInstantiation(func, argumentsList) [...] 23. Let iteratorRecord be Record {[[iterator]]: CreateListIterator(argumentsList), [[done]]: false}. 24. If hasDuplicates is true, then [...] 25. Else, b. Let formalStatus be IteratorBindingInitialization for formals with iteratorRecord and env as arguments. [...] 13.3.3.6 Runtime Semantics: IteratorBindingInitialization BindingRestElement : ... BindingPattern 1. Let A be ArrayCreate(0). [...] 3. Repeat [...] b. If iteratorRecord.[[done]] is true, then i. Return the result of performing BindingInitialization of BindingPattern with A and environment as the arguments. [...] 13.3.3.6 Runtime Semantics: IteratorBindingInitialization ArrayBindingPattern : [ ] 1. Return NormalCompletion(empty). ---*/ var iterations = 0; var iter = function*() { iterations += 1; }(); var callCount = 0; var C = class { method([...[]]) { assert.sameValue(iterations, 1); callCount = callCount + 1; } }; new C().method(iter); assert.sameValue(callCount, 1, 'method invoked exactly once');