/****************************************************************************
**
** https://www.qxorm.com/
** Copyright (C) 2013 Lionel Marty (contact@qxorm.com)
**
** This file is part of the QxOrm library
**
** This software is provided 'as-is', without any express or implied
** warranty. In no event will the authors be held liable for any
** damages arising from the use of this software
**
** Commercial Usage
** Licensees holding valid commercial QxOrm licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Lionel Marty
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file 'license.gpl3.txt' included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met : http://www.gnu.org/copyleft/gpl.html
**
** If you are unsure which license is appropriate for your use, or
** if you have questions regarding the use of this file, please contact :
** contact@qxorm.com
**
****************************************************************************/

#ifndef _QX_HASH_VALUE_H_
#define _QX_HASH_VALUE_H_

#ifdef _MSC_VER
#pragma once
#endif

/*!
 * \file QxHashValue.h
 * \author Lionel Marty
 * \ingroup QxCommon
 * \brief Specialize hash_value function for some Qt and boost types (used for example by qx::QxCollection<Key, Value> container)
 */

#include <QtCore/qstring.h>
#include <QtCore/qdatetime.h>
#include <QtCore/qvariant.h>
#include <QtCore/qpair.h>

inline std::size_t hash_value(const QString & s)      { return qHash(s); }
inline std::size_t hash_value(const QDate & d)        { return qHash(d.toJulianDay()); }
inline std::size_t hash_value(const QTime & t)        { return qHash(t.toString()); }
inline std::size_t hash_value(const QDateTime & dt)   { return qHash(dt.toString()); }
inline std::size_t hash_value(const QVariant & v)     { return qHash(v.toString()); }

inline uint qHash(const QDate & d)                    { return static_cast<uint>(hash_value(d)); }
inline uint qHash(const QTime & t)                    { return static_cast<uint>(hash_value(t)); }
inline uint qHash(const QDateTime & dt)               { return static_cast<uint>(hash_value(dt)); }
inline uint qHash(const QVariant & v)                 { return static_cast<uint>(hash_value(v)); }

#ifndef QT_NO_STL
inline uint qHash(const std::string & s)              { QString tmp = QString::fromStdString(s); return qHash(tmp); }
inline uint qHash(const std::wstring & s)             { QString tmp = QString::fromStdWString(s); return qHash(tmp); }
#else // QT_NO_STL
inline uint qHash(const std::string & s)              { QString tmp = QString::fromLatin1(s.data(), int(s.size())); return qHash(tmp); }
inline uint qHash(const std::wstring & s)             { qAssert(false); /* Need STL compatibility ! */ return 0; }
#endif // QT_NO_STL

namespace qx {
template <class T>
inline void hash_combine(std::size_t & seed, const T & t)
{ seed ^= qHash(t) + 0x9e3779b9 + (seed << 6) + (seed >> 2); }
} // namespace qx

template <typename T0, typename T1>
inline std::size_t hash_value(const QPair<T0, T1> & p)
{
   std::size_t seed = 0;
   qx::hash_combine(seed, p.first);
   qx::hash_combine(seed, p.second);
   return seed;
}

#ifdef _QX_ENABLE_BOOST

namespace boost {
namespace tuples {

template <typename T0, typename T1>
inline std::size_t hash_value(const boost::tuple<T0, T1> & tu)
{
   std::size_t seed = 0;
   qx::hash_combine(seed, boost::get<0>(tu));
   qx::hash_combine(seed, boost::get<1>(tu));
   return seed;
}

template <typename T0, class T1, typename T2>
inline std::size_t hash_value(const boost::tuple<T0, T1, T2> & tu)
{
   std::size_t seed = 0;
   qx::hash_combine(seed, boost::get<0>(tu));
   qx::hash_combine(seed, boost::get<1>(tu));
   qx::hash_combine(seed, boost::get<2>(tu));
   return seed;
}

template <typename T0, typename T1, typename T2, typename T3>
inline std::size_t hash_value(const boost::tuple<T0, T1, T2, T3> & tu)
{
   std::size_t seed = 0;
   qx::hash_combine(seed, boost::get<0>(tu));
   qx::hash_combine(seed, boost::get<1>(tu));
   qx::hash_combine(seed, boost::get<2>(tu));
   qx::hash_combine(seed, boost::get<3>(tu));
   return seed;
}

template <typename T0, typename T1, typename T2, typename T3, typename T4>
inline std::size_t hash_value(const boost::tuple<T0, T1, T2, T3, T4> & tu)
{
   std::size_t seed = 0;
   qx::hash_combine(seed, boost::get<0>(tu));
   qx::hash_combine(seed, boost::get<1>(tu));
   qx::hash_combine(seed, boost::get<2>(tu));
   qx::hash_combine(seed, boost::get<3>(tu));
   qx::hash_combine(seed, boost::get<4>(tu));
   return seed;
}

template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5>
inline std::size_t hash_value(const boost::tuple<T0, T1, T2, T3, T4, T5> & tu)
{
   std::size_t seed = 0;
   qx::hash_combine(seed, boost::get<0>(tu));
   qx::hash_combine(seed, boost::get<1>(tu));
   qx::hash_combine(seed, boost::get<2>(tu));
   qx::hash_combine(seed, boost::get<3>(tu));
   qx::hash_combine(seed, boost::get<4>(tu));
   qx::hash_combine(seed, boost::get<5>(tu));
   return seed;
}

template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5, typename T6>
inline std::size_t hash_value(const boost::tuple<T0, T1, T2, T3, T4, T5, T6> & tu)
{
   std::size_t seed = 0;
   qx::hash_combine(seed, boost::get<0>(tu));
   qx::hash_combine(seed, boost::get<1>(tu));
   qx::hash_combine(seed, boost::get<2>(tu));
   qx::hash_combine(seed, boost::get<3>(tu));
   qx::hash_combine(seed, boost::get<4>(tu));
   qx::hash_combine(seed, boost::get<5>(tu));
   qx::hash_combine(seed, boost::get<6>(tu));
   return seed;
}

template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7>
inline std::size_t hash_value(const boost::tuple<T0, T1, T2, T3, T4, T5, T6, T7> & tu)
{
   std::size_t seed = 0;
   qx::hash_combine(seed, boost::get<0>(tu));
   qx::hash_combine(seed, boost::get<1>(tu));
   qx::hash_combine(seed, boost::get<2>(tu));
   qx::hash_combine(seed, boost::get<3>(tu));
   qx::hash_combine(seed, boost::get<4>(tu));
   qx::hash_combine(seed, boost::get<5>(tu));
   qx::hash_combine(seed, boost::get<6>(tu));
   qx::hash_combine(seed, boost::get<7>(tu));
   return seed;
}

template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename T8>
inline std::size_t hash_value(const boost::tuple<T0, T1, T2, T3, T4, T5, T6, T7, T8> & tu)
{
   std::size_t seed = 0;
   qx::hash_combine(seed, boost::get<0>(tu));
   qx::hash_combine(seed, boost::get<1>(tu));
   qx::hash_combine(seed, boost::get<2>(tu));
   qx::hash_combine(seed, boost::get<3>(tu));
   qx::hash_combine(seed, boost::get<4>(tu));
   qx::hash_combine(seed, boost::get<5>(tu));
   qx::hash_combine(seed, boost::get<6>(tu));
   qx::hash_combine(seed, boost::get<7>(tu));
   qx::hash_combine(seed, boost::get<8>(tu));
   return seed;
}

template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename T8, typename T9>
inline std::size_t hash_value(const boost::tuple<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9> & tu)
{
   std::size_t seed = 0;
   qx::hash_combine(seed, boost::get<0>(tu));
   qx::hash_combine(seed, boost::get<1>(tu));
   qx::hash_combine(seed, boost::get<2>(tu));
   qx::hash_combine(seed, boost::get<3>(tu));
   qx::hash_combine(seed, boost::get<4>(tu));
   qx::hash_combine(seed, boost::get<5>(tu));
   qx::hash_combine(seed, boost::get<6>(tu));
   qx::hash_combine(seed, boost::get<7>(tu));
   qx::hash_combine(seed, boost::get<8>(tu));
   qx::hash_combine(seed, boost::get<9>(tu));
   return seed;
}

} // namespace tuples
} // namespace boost

template <typename T0, typename T1>
inline uint qHash(const boost::tuple<T0, T1> & tu)
{ return static_cast<uint>(hash_value(tu)); }

template <typename T0, class T1, typename T2>
inline uint qHash(const boost::tuple<T0, T1, T2> & tu)
{ return static_cast<uint>(hash_value(tu)); }

template <typename T0, typename T1, typename T2, typename T3>
inline uint qHash(const boost::tuple<T0, T1, T2, T3> & tu)
{ return static_cast<uint>(hash_value(tu)); }

template <typename T0, typename T1, typename T2, typename T3, typename T4>
inline uint qHash(const boost::tuple<T0, T1, T2, T3, T4> & tu)
{ return static_cast<uint>(hash_value(tu)); }

template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5>
inline uint qHash(const boost::tuple<T0, T1, T2, T3, T4, T5> & tu)
{ return static_cast<uint>(hash_value(tu)); }

template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5, typename T6>
inline uint qHash(const boost::tuple<T0, T1, T2, T3, T4, T5, T6> & tu)
{ return static_cast<uint>(hash_value(tu)); }

template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7>
inline uint qHash(const boost::tuple<T0, T1, T2, T3, T4, T5, T6, T7> & tu)
{ return static_cast<uint>(hash_value(tu)); }

template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename T8>
inline uint qHash(const boost::tuple<T0, T1, T2, T3, T4, T5, T6, T7, T8> & tu)
{ return static_cast<uint>(hash_value(tu)); }

template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename T8, typename T9>
inline uint qHash(const boost::tuple<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9> & tu)
{ return static_cast<uint>(hash_value(tu)); }

#endif // _QX_ENABLE_BOOST

template <typename T0, typename T1>
inline std::size_t hash_value(const std::tuple<T0, T1> & tu)
{
   std::size_t seed = 0;
   qx::hash_combine(seed, std::get<0>(tu));
   qx::hash_combine(seed, std::get<1>(tu));
   return seed;
}

template <typename T0, class T1, typename T2>
inline std::size_t hash_value(const std::tuple<T0, T1, T2> & tu)
{
   std::size_t seed = 0;
   qx::hash_combine(seed, std::get<0>(tu));
   qx::hash_combine(seed, std::get<1>(tu));
   qx::hash_combine(seed, std::get<2>(tu));
   return seed;
}

template <typename T0, typename T1, typename T2, typename T3>
inline std::size_t hash_value(const std::tuple<T0, T1, T2, T3> & tu)
{
   std::size_t seed = 0;
   qx::hash_combine(seed, std::get<0>(tu));
   qx::hash_combine(seed, std::get<1>(tu));
   qx::hash_combine(seed, std::get<2>(tu));
   qx::hash_combine(seed, std::get<3>(tu));
   return seed;
}

template <typename T0, typename T1, typename T2, typename T3, typename T4>
inline std::size_t hash_value(const std::tuple<T0, T1, T2, T3, T4> & tu)
{
   std::size_t seed = 0;
   qx::hash_combine(seed, std::get<0>(tu));
   qx::hash_combine(seed, std::get<1>(tu));
   qx::hash_combine(seed, std::get<2>(tu));
   qx::hash_combine(seed, std::get<3>(tu));
   qx::hash_combine(seed, std::get<4>(tu));
   return seed;
}

template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5>
inline std::size_t hash_value(const std::tuple<T0, T1, T2, T3, T4, T5> & tu)
{
   std::size_t seed = 0;
   qx::hash_combine(seed, std::get<0>(tu));
   qx::hash_combine(seed, std::get<1>(tu));
   qx::hash_combine(seed, std::get<2>(tu));
   qx::hash_combine(seed, std::get<3>(tu));
   qx::hash_combine(seed, std::get<4>(tu));
   qx::hash_combine(seed, std::get<5>(tu));
   return seed;
}

template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5, typename T6>
inline std::size_t hash_value(const std::tuple<T0, T1, T2, T3, T4, T5, T6> & tu)
{
   std::size_t seed = 0;
   qx::hash_combine(seed, std::get<0>(tu));
   qx::hash_combine(seed, std::get<1>(tu));
   qx::hash_combine(seed, std::get<2>(tu));
   qx::hash_combine(seed, std::get<3>(tu));
   qx::hash_combine(seed, std::get<4>(tu));
   qx::hash_combine(seed, std::get<5>(tu));
   qx::hash_combine(seed, std::get<6>(tu));
   return seed;
}

template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7>
inline std::size_t hash_value(const std::tuple<T0, T1, T2, T3, T4, T5, T6, T7> & tu)
{
   std::size_t seed = 0;
   qx::hash_combine(seed, std::get<0>(tu));
   qx::hash_combine(seed, std::get<1>(tu));
   qx::hash_combine(seed, std::get<2>(tu));
   qx::hash_combine(seed, std::get<3>(tu));
   qx::hash_combine(seed, std::get<4>(tu));
   qx::hash_combine(seed, std::get<5>(tu));
   qx::hash_combine(seed, std::get<6>(tu));
   qx::hash_combine(seed, std::get<7>(tu));
   return seed;
}

template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename T8>
inline std::size_t hash_value(const std::tuple<T0, T1, T2, T3, T4, T5, T6, T7, T8> & tu)
{
   std::size_t seed = 0;
   qx::hash_combine(seed, std::get<0>(tu));
   qx::hash_combine(seed, std::get<1>(tu));
   qx::hash_combine(seed, std::get<2>(tu));
   qx::hash_combine(seed, std::get<3>(tu));
   qx::hash_combine(seed, std::get<4>(tu));
   qx::hash_combine(seed, std::get<5>(tu));
   qx::hash_combine(seed, std::get<6>(tu));
   qx::hash_combine(seed, std::get<7>(tu));
   qx::hash_combine(seed, std::get<8>(tu));
   return seed;
}

template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename T8, typename T9>
inline std::size_t hash_value(const std::tuple<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9> & tu)
{
   std::size_t seed = 0;
   qx::hash_combine(seed, std::get<0>(tu));
   qx::hash_combine(seed, std::get<1>(tu));
   qx::hash_combine(seed, std::get<2>(tu));
   qx::hash_combine(seed, std::get<3>(tu));
   qx::hash_combine(seed, std::get<4>(tu));
   qx::hash_combine(seed, std::get<5>(tu));
   qx::hash_combine(seed, std::get<6>(tu));
   qx::hash_combine(seed, std::get<7>(tu));
   qx::hash_combine(seed, std::get<8>(tu));
   qx::hash_combine(seed, std::get<9>(tu));
   return seed;
}

template <typename T0, typename T1>
inline uint qHash(const std::tuple<T0, T1> & tu)
{ return static_cast<uint>(hash_value(tu)); }

template <typename T0, class T1, typename T2>
inline uint qHash(const std::tuple<T0, T1, T2> & tu)
{ return static_cast<uint>(hash_value(tu)); }

template <typename T0, typename T1, typename T2, typename T3>
inline uint qHash(const std::tuple<T0, T1, T2, T3> & tu)
{ return static_cast<uint>(hash_value(tu)); }

template <typename T0, typename T1, typename T2, typename T3, typename T4>
inline uint qHash(const std::tuple<T0, T1, T2, T3, T4> & tu)
{ return static_cast<uint>(hash_value(tu)); }

template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5>
inline uint qHash(const std::tuple<T0, T1, T2, T3, T4, T5> & tu)
{ return static_cast<uint>(hash_value(tu)); }

template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5, typename T6>
inline uint qHash(const std::tuple<T0, T1, T2, T3, T4, T5, T6> & tu)
{ return static_cast<uint>(hash_value(tu)); }

template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7>
inline uint qHash(const std::tuple<T0, T1, T2, T3, T4, T5, T6, T7> & tu)
{ return static_cast<uint>(hash_value(tu)); }

template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename T8>
inline uint qHash(const std::tuple<T0, T1, T2, T3, T4, T5, T6, T7, T8> & tu)
{ return static_cast<uint>(hash_value(tu)); }

template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename T8, typename T9>
inline uint qHash(const std::tuple<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9> & tu)
{ return static_cast<uint>(hash_value(tu)); }

#endif // _QX_HASH_VALUE_H_