is_container_to_pod.h

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** Copyright (C) 2013 Lionel Marty (contact@qxorm.com)
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#ifndef _QX_IS_CONTAINER_TO_POD_H_
#define _QX_IS_CONTAINER_TO_POD_H_

#ifdef _MSC_VER
#pragma once
#endif

#include <QxTraits/is_container.h>
#include <QxTraits/is_qx_pod.h>

namespace qx {
namespace trait {

template <typename T>
class is_container_to_pod
{

private:

   template <typename U>
   static typename std::conditional<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const std::vector<U> &);

   template <typename U>
   static typename std::conditional<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const std::list<U> &);

   template <typename U>
   static typename std::conditional<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const std::set<U> &);

#if (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
   template <typename U>
   static typename std::conditional<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const QVector<U> &);
#endif // (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))

   template <typename U>
   static typename std::conditional<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const QList<U> &);

   template <typename U>
   static typename std::conditional<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const QSet<U> &);

#if (QT_VERSION < QT_VERSION_CHECK(5, 15, 0))
   template <typename U>
   static typename std::conditional<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const QLinkedList<U> &);
#endif // (QT_VERSION < QT_VERSION_CHECK(5, 15, 0))

#ifdef _QX_ENABLE_BOOST

   template <typename U>
   static typename std::conditional<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const boost::unordered_set<U> &);

   template <typename U>
   static typename std::conditional<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const boost::unordered_multiset<U> &);

#endif // _QX_ENABLE_BOOST

   template <typename U>
   static typename std::conditional<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const std::unordered_set<U> &);

   template <typename U>
   static typename std::conditional<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const std::unordered_multiset<U> &);

   static int removeContainer(...);
   static T t;

public:

   enum { value = (qx::trait::is_container<T>::value && (sizeof(qx::trait::is_container_to_pod<T>::removeContainer(t)) == sizeof(char))) };

   typedef typename std::conditional<qx::trait::is_container_to_pod<T>::value, std::true_type, std::false_type>::type type;

};

} // namespace trait
} // namespace qx

#endif // _QX_IS_CONTAINER_TO_POD_H_