Pack_selector.hpp

/*
 * Pack_selector.hpp
 *
 *  Created on: Jul 15, 2015
 *      Author: Pietro Incardona
 */


#ifndef SRC_PACK_AAA_SELECTOR_HPP_
#define SRC_PACK_AAA_SELECTOR_HPP_

#include <type_traits>
#include "util/common.hpp"
#include "Grid/Encap.hpp"
#include "Grid/util.hpp"
#include "Vector/util.hpp"

#define PACKER_PRIMITIVE 1
#define PACKER_ARRAY_PRIMITIVE 2
#define PACKER_ENCAP_OBJECTS 3
#define PACKER_VECTOR 4
#define PACKER_GRID 5
#define PACKER_OBJECTS_WITH_WARNING_POINTERS 6
#define PACKER_OBJECTS_WITH_POINTER_CHECK 7

#define IS_ENCAP 4
#define IS_GRID 2
#define IS_VECTOR 1

template <typename T, bool has_noPointers>
struct Pack_selector_unknown_type_impl
{
    enum
    {
        value = PACKER_OBJECTS_WITH_POINTER_CHECK
    };
};

template <typename T>
struct Pack_selector_unknown_type_impl<T,false>
{
    enum
    {
        value = PACKER_OBJECTS_WITH_WARNING_POINTERS
    };
};

template <typename T, int known_type>
struct Pack_selector_known_type_impl
{
    enum
    {
        value = Pack_selector_unknown_type_impl<T, has_noPointers<T>::value >::value
    };
};

template <typename T>
struct Pack_selector_known_type_impl<T,IS_GRID>
{
    enum
    {
        value = PACKER_GRID
    };
};

template <typename T>
struct Pack_selector_known_type_impl<T,IS_VECTOR>
{
    enum
    {
        value = PACKER_VECTOR
    };
};

template <typename T>
struct Pack_selector_known_type_impl<T,IS_ENCAP>
{
    enum
    {
        value = PACKER_ENCAP_OBJECTS
    };
};


template<typename T, bool is_foundamental>
struct Pack_selector_impl
{
    enum
    {
        value = Pack_selector_known_type_impl< T, 4*is_encap<T>::value + is_grid<T>::value * 2 + is_vector<T>::value >::value
    };
};

template<typename T>
struct Pack_selector_impl<T,true>
{
    enum
    {
        value = PACKER_PRIMITIVE
    };
};


template <typename T>
struct Pack_selector
{
    enum
    {
        value = Pack_selector_impl< T,std::is_fundamental<T>::value >::value
    };
};


#endif /* SRC_PACK_SELECTOR_HPP_ */