// This file was procedurally generated from the following sources: // - src/function-forms/dflt-params-ref-prior.case // - src/function-forms/default/gen-func-decl.template /*--- description: Referencing a parameter that occurs earlier in the ParameterList (generator function declaration) esid: sec-generator-function-definitions-runtime-semantics-instantiatefunctionobject features: [default-parameters, generators] flags: [generated] info: | GeneratorDeclaration : function * ( FormalParameters ) { GeneratorBody } [...] 2. Let F be GeneratorFunctionCreate(Normal, FormalParameters, GeneratorBody, scope, strict). [...] 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. [...] 14.1.19 Runtime Semantics: IteratorBindingInitialization FormalsList : FormalsList , FormalParameter 1. Let status be the result of performing IteratorBindingInitialization for FormalsList using iteratorRecord and environment as the arguments. 2. ReturnIfAbrupt(status). 3. Return the result of performing IteratorBindingInitialization for FormalParameter using iteratorRecord and environment as the arguments. ---*/ var x = 0; var callCount = 0; // Stores a reference `ref` for case evaluation function* ref(x, y = x, z = y) { assert.sameValue(x, 3, 'first argument value'); assert.sameValue(y, 3, 'second argument value'); assert.sameValue(z, 3, 'third argument value'); callCount = callCount + 1; } ref(3).next(); assert.sameValue(callCount, 1, 'generator function invoked exactly once'); reportCompare(0, 0);