/* (non-Javadoc)
* @see Expression#evaluate(IVariablePool)
*/
EvaluationResult::ConstPointer
AdaptExpression::Evaluate(IEvaluationContext* context) const
{
if (fTypeName.size() == 0)
return EvaluationResult::FALSE_EVAL;
Object::ConstPointer var = context->GetDefaultVariable();
Object::ConstPointer adapted;
IAdapterManager* manager = Platform::GetAdapterManager();
if (Expressions::IsInstanceOf(var.GetPointer(), fTypeName))
{
adapted = var;
}
else
{
if (!manager->HasAdapter(var.GetPointer(), fTypeName))
return EvaluationResult::FALSE_EVAL;
adapted = manager->GetAdapter(var.GetPointer(), fTypeName);
}
// the adapted result is null but hasAdapter returned TRUE_EVAL check
// if the adapter is loaded.
if (adapted.IsNull())
{
if (manager->QueryAdapter(var.GetPointer(), fTypeName) == IAdapterManager::NOT_LOADED)
{
return EvaluationResult::NOT_LOADED;
}
else
{
return EvaluationResult::FALSE_EVAL;
}
}
DefaultVariable scope(context, adapted);
return this->EvaluateAnd(&scope);
}
bool
Expressions::IsInstanceOf(Object::ConstPointer element, const std::string& type)
{
// null isn't an instanceof of anything.
if (element.IsNull())
return false;
// TODO Reflection
// return IsSubtype(element, type)
return element->GetClassName() == type;
}