DataTypeTraits.h

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/******************************************************************************
 * Copyright (C) 2014 by Ralf Kaestner                                        *
 * ralf.kaestner@gmail.com                                                    *
 *                                                                            *
 * This program is free software; you can redistribute it and/or modify       *
 * it under the terms of the Lesser GNU General Public License as published by*
 * the Free Software Foundation; either version 3 of the License, or          *
 * (at your option) any later version.                                        *
 *                                                                            *
 * This program is distributed in the hope that it will be useful,            *
 * but WITHOUT ANY WARRANTY; without even the implied warranty of             *
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the               *
 * Lesser GNU General Public License for more details.                        *
 *                                                                            *
 * You should have received a copy of the Lesser GNU General Public License   *
 * along with this program. If not, see <http://www.gnu.org/licenses/>.       *
 ******************************************************************************/

#ifndef VARIANT_TOPIC_TOOLS_DATA_TYPE_TRAITS_H
#define VARIANT_TOPIC_TOOLS_DATA_TYPE_TRAITS_H

#include <boost/type_traits.hpp>

#include <variant_topic_tools/ArrayTypeTraits.h>
#include <variant_topic_tools/BuiltinTypeTraits.h>
#include <variant_topic_tools/MessageTypeTraits.h>

namespace variant_topic_tools {
  namespace type_traits {
    template <typename T, typename Enable = void> struct DataType;
    
    template <typename T> struct DataType<T, typename boost::
        enable_if<IsBuiltin<T> >::type> {
      typedef typename BuiltinType<T>::ValueType ValueType;
      typedef typename BuiltinType<T>::IsFixedSize IsFixedSize;
      typedef typename BuiltinType<T>::IsFixedSize IsSimple;
    };
    
    template <typename T> struct DataType<T, typename boost::
        enable_if<IsArray<T> >::type> {
      typedef typename ArrayType<T>::ValueType ValueType;
      typedef typename ArrayType<T>::IsFixedSize IsFixedSize;
      typedef typename ArrayType<T>::IsFixedSize IsSimple;
    };    
    
    template <typename T> struct DataType<T, typename boost::
        enable_if<IsMessage<T> >::type> {
      typedef typename MessageType<T>::ValueType ValueType;
      typedef typename MessageType<T>::IsFixedSize IsFixedSize;
      typedef typename MessageType<T>::IsFixedSize IsSimple;
    };    
    
    template <typename T, typename Enable = void> struct ToDataType;
    
    template <typename T> struct ToDataType<T, typename boost::
        enable_if<IsBuiltin<typename ToBuiltinType<T>::BuiltinType> >::type> {
      typedef typename ToBuiltinType<T>::BuiltinType DataType;
    };
    
    template <typename T> struct ToDataType<T, typename boost::
        enable_if<IsArray<typename ToArrayType<T>::ArrayType> >::type> {
      typedef typename ToArrayType<T>::ArrayType DataType;
    };
    
    template <typename T> struct ToDataType<T, typename boost::
        enable_if<IsMessage<typename ToMessageType<T>::MessageType> >::type> {
      typedef typename ToMessageType<T>::MessageType DataType;
    };
  };
};

#endif