hash.h

/* Copyright (c) 2005-2012, Stefan Eilemann <eile@equalizergraphics.com>
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License version 2.1 as published
 * by the Free Software Foundation.
 *
 * This library 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 GNU Lesser General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef LUNCHBOX_HASH_H
#define LUNCHBOX_HASH_H

#include <lunchbox/refPtr.h>
#include <lunchbox/stdExt.h>

namespace lunchbox
{
template<class K, class T> class PtrHash
#ifdef _MSC_VER
        : public stde::hash_map< K, T, stde::hash_compare< const void* > >
#else
        : public stde::hash_map< K, T, stde::hash< const void* > >
#endif
{};

#ifdef _MSC_VER
template< typename T >
class hashRefPtr : public stde::hash_compare< RefPtr< T > >
{
public:
    size_t operator() ( const RefPtr< T >& key ) const
    {
        stde::hash_compare< const void* > comp;
        return comp( key.get( ));
    }

    bool operator() ( const RefPtr< T >& k1, const RefPtr< T >& k2 ) const
    {
        return k1 < k2;
    }
};

template< class K, class T > class RefPtrHash
        : public stde::hash_map< RefPtr< K >, T, hashRefPtr< K > >
{};

#else
template< typename T > struct hashRefPtr
{
    size_t operator()( RefPtr< T > key ) const
    {
        return stde::hash< const void* >()( key.get() );
    }
};

template< class K, class T > class RefPtrHash
        : public stde::hash_map< RefPtr< K >, T, hashRefPtr< K > >
{};
#endif

#ifdef LUNCHBOX_USE_V1_API

template<class T> class UUIDHash : public stde::hash_map<lunchbox::UUID, T> {};
#endif

}
#endif // LUNCHBOX_HASH_H