public SubroutineCatalogItem Initiate()
{
// Setup the subroutine element.
Subroutine subroutine = _deltinScript.SubroutineCollection.NewSubroutine(_context.ElementName);
// Create the rule.
_subroutineRule = new TranslateRule(_deltinScript, subroutine, _context.RuleName, _context.VariableGlobalDefault);
// Setup the return handler.
_actionSet = _subroutineRule.ActionSet
.ContainVariableAssigner()
.SetThisTypeLinker(_context.TypeLinker)
.New(_context.Controller.Attributes.IsRecursive);
// Create the function builder.
var controller = _context.Controller;
// Create the parameter handlers.
_parameterHandler = controller.CreateParameterHandler(_actionSet, null);
// If the subroutine is an object function inside a class, create a variable to store the class object.
if (controller.Attributes.IsInstance)
{
_objectStore = _actionSet.VarCollection.Assign(_context.ObjectStackName, true, !controller.Attributes.IsRecursive);
// Set the objectStore as an empty array if the subroutine is recursive.
if (controller.Attributes.IsRecursive)
{
// Initialize as empty array.
_actionSet.InitialSet().AddAction(_objectStore.SetVariable(Element.EmptyArray()));
// Add to assigner with the last of the objectStore stack being the object instance.
_context.ContainingType?.AddObjectVariablesToAssigner(_actionSet.ToWorkshop, Element.LastOf(_objectStore.GetVariable()), _actionSet.IndexAssigner);
// Set the actionSet.
_actionSet = _actionSet.New(Element.LastOf(_objectStore.Get())).PackThis().New(_objectStore.CreateChild(Element.CountOf(_objectStore.Get()) - 1));
}
else
{
// Add to assigner with the objectStore being the object instance.
_context.ContainingType?.AddObjectVariablesToAssigner(_actionSet.ToWorkshop, _objectStore.GetVariable(), _actionSet.IndexAssigner);
// Set the actionSet.
_actionSet = _actionSet.New(_objectStore.Get()).PackThis().New(_objectStore);
}
}
_functionBuilder = new WorkshopFunctionBuilder(_actionSet, controller);
_functionBuilder.ModifySet(a => a.PackThis()); // TODO: is this required?
_functionBuilder.SetupReturnHandler();
_parameterHandler.AddParametersToAssigner(_actionSet.IndexAssigner);
// Done.
return(Result = new SubroutineCatalogItem(
subroutine: subroutine,
parameterHandler: _parameterHandler,
objectStack: _objectStore,
returnHandler: _functionBuilder.ReturnHandler));
}