query/include/matador/object/basic_object_info.hpp

50 lines
1.1 KiB
C++

#ifndef BASIC_PROTOTYPE_INFO_HPP
#define BASIC_PROTOTYPE_INFO_HPP
#include <string>
#include <typeindex>
namespace matador::object {
class schema_node;
class basic_object_info {
public:
virtual ~basic_object_info() = default;
[[nodiscard]] std::type_index type_index() const;
[[nodiscard]] std::string name() const;
protected:
basic_object_info(schema_node &node, std::type_index type_index);
protected:
schema_node &node_; /**< prototype node of the represented object type */
std::type_index type_index_; /**< type index of the represented object type */
};
template<typename Type>
class object_info final : public basic_object_info {
public:
explicit object_info(schema_node &node)
: basic_object_info(node, typeid(Type)) {}
const Type &prototype() const { return prototype_; }
private:
Type prototype_;
};
template<typename Type>
using object_info_ref = std::reference_wrapper<const object_info<Type>>;
namespace detail {
struct null_type {};
}
using null_info = object_info<detail::null_type>;
}
#endif //BASIC_PROTOTYPE_INFO_HPP