bind-values.h

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#ifndef SOCI_BIND_VALUES_H_INCLUDED
#define SOCI_BIND_VALUES_H_INCLUDED

#include "exchange-traits.h"
#include "into-type.h"
#include "into.h"
#include "soci-backend.h"
#include "use-type.h"
#include "use.h"


#ifdef HAVE_BOOST
#       include <boost/fusion/algorithm/iteration/for_each.hpp>
#       include <boost/mpl/bool.hpp>
#endif // HAVE_BOOST
#include <vector>

namespace soci
{
namespace details
{

class use_type_vector: public std::vector<use_type_base *>
{
public:
    ~use_type_vector() 
    {
        for(iterator iter = begin(), _end = end();
            iter != _end; iter++)
            delete *iter;
    }

    void exchange(use_type_ptr const& u) { push_back(u.get()); u.release(); }
    
    template <typename T, typename Indicator>
    void exchange(use_container<T, Indicator> const &uc)
    {
#ifdef HAVE_BOOST
        exchange_(uc, (typename boost::fusion::traits::is_sequence<T>::type *)NULL);
#else
        exchange_(uc, NULL);
#endif // HAVE_BOOST
    }

private:
#ifdef HAVE_BOOST
    template <typename T, typename Indicator>
    struct use_sequence
    {
        use_sequence(use_type_vector &_p, Indicator &_ind)
            :p(_p), ind(_ind) {}

        template <typename T2>
        void operator()(T2 &t2) const
        {
            p.exchange(use(t2, ind));
        }

        use_type_vector &p;
        Indicator &ind;
    };

    template <typename T>
    struct use_sequence<T, details::no_indicator>
    {
        use_sequence(use_type_vector &_p)
            :p(_p) {}

        template <typename T2>
        void operator()(T2 &t2) const
        {
            p.exchange(use(t2));
        }

        use_type_vector &p;
    };

    template <typename T, typename Indicator>
    void exchange_(use_container<T, Indicator> const &uc, boost::mpl::true_ * /* fusion sequence */)
    {
        boost::fusion::for_each(uc.t, use_sequence<T, Indicator>(*this, uc.ind));
    }

    template <typename T>
    void exchange_(use_container<T, details::no_indicator> const &uc, boost::mpl::true_ * /* fusion sequence */)
    {
        boost::fusion::for_each(uc.t, use_sequence<T, details::no_indicator>(*this));
    }

#endif // HAVE_BOOST

    template <typename T, typename Indicator>
    void exchange_(use_container<T, Indicator> const &uc, ...)
    { exchange(do_use(uc.t, uc.ind, uc.name, typename details::exchange_traits<T>::type_family())); }

    template <typename T>
    void exchange_(use_container<T, details::no_indicator> const &uc, ...)
    { exchange(do_use(uc.t, uc.name, typename details::exchange_traits<T>::type_family())); }
        
    template <typename T, typename Indicator>
    void exchange_(use_container<const T, Indicator> const &uc, ...)
    { exchange(do_use(uc.t, uc.ind, uc.name, typename details::exchange_traits<T>::type_family())); }
        
    template <typename T>
    void exchange_(use_container<const T, details::no_indicator> const &uc, ...)
    { exchange(do_use(uc.t, uc.name, typename details::exchange_traits<T>::type_family())); }
};

class into_type_vector: public std::vector<details::into_type_base *>
{
public:
    ~into_type_vector() 
    {
        for(iterator iter = begin(), _end = end();
            iter != _end; iter++)
            delete *iter;
    }

    void exchange(into_type_ptr const& i) { push_back(i.get()); i.release(); }

    template <typename T, typename Indicator>
    void exchange(into_container<T, Indicator> const &ic)
    {
#ifdef HAVE_BOOST
        exchange_(ic, (typename boost::fusion::traits::is_sequence<T>::type *)NULL);
#else
        exchange_(ic, NULL);
#endif // HAVE_BOOST
    }
        
private:
#ifdef HAVE_BOOST
    template <typename T, typename Indicator>
    struct into_sequence
    {
        into_sequence(into_type_vector &_p, Indicator &_ind)
            :p(_p), ind(_ind) {}

        template <typename T2>
        void operator()(T2 &t2) const
        {
            p.exchange(into(t2, ind));
        }

        into_type_vector &p;
        Indicator &ind;
    };

    template <typename T>
    struct into_sequence<T, details::no_indicator>
    {
        into_sequence(into_type_vector &_p)
            :p(_p) {}

        template <typename T2>
        void operator()(T2 &t2) const
        {
            p.exchange(into(t2));
        }

        into_type_vector &p;
    };

    template <typename T, typename Indicator>
    void exchange_(into_container<T, Indicator> const &ic, boost::mpl::true_ * /* fusion sequence */)
    {
        boost::fusion::for_each(ic.t, into_sequence<T, Indicator>(*this, ic.ind));
    }

    template <typename T>
    void exchange_(into_container<T, details::no_indicator> const &ic, boost::mpl::true_ * /* fusion sequence */)
    {
        boost::fusion::for_each(ic.t, into_sequence<T, details::no_indicator>(*this));
    }
#endif // HAVE_BOOST

    template <typename T, typename Indicator>
    void exchange_(into_container<T, Indicator> const &ic, ...)
    { exchange(do_into(ic.t, ic.ind, typename details::exchange_traits<T>::type_family())); }

    template <typename T>
    void exchange_(into_container<T, details::no_indicator> const &ic, ...)
    { exchange(do_into(ic.t, typename details::exchange_traits<T>::type_family())); }        
};

} // namespace details
}// namespace soci
#endif // SOCI_BIND_VALUES_H_INCLUDED