/*
    This file is a part of libcds - Concurrent Data Structures library

    (C) Copyright Maxim Khizhinsky (libcds.dev@gmail.com) 2006-2016

    Source code repo: http://github.com/khizmax/libcds/
    Download: http://sourceforge.net/projects/libcds/files/

    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice, this
      list of conditions and the following disclaimer.

    * Redistributions in binary form must reproduce the above copyright notice,
      this list of conditions and the following disclaimer in the documentation
      and/or other materials provided with the distribution.

    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
    FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
    CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
    OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#ifndef CDSUNIT_MAP_TYPE_H
#define CDSUNIT_MAP_TYPE_H

#include <cds/urcu/general_instant.h>
#include <cds/urcu/general_buffered.h>
#include <cds/urcu/general_threaded.h>
#include <cds/urcu/signal_buffered.h>
#include <cds/urcu/signal_threaded.h>

#include <cds/sync/spinlock.h>
#include <cds/opt/hash.h>
#include <boost/functional/hash/hash.hpp>

#include <cds_test/stress_test.h>
#include <cds_test/check_size.h>
#include "framework/michael_alloc.h"

namespace map {
    namespace cc = cds::container;
    namespace co = cds::opt;

    typedef cds::urcu::gc< cds::urcu::general_instant_stripped >   rcu_gpi;
    typedef cds::urcu::gc< cds::urcu::general_buffered_stripped >  rcu_gpb;
    typedef cds::urcu::gc< cds::urcu::general_threaded_stripped >  rcu_gpt;
#ifdef CDS_URCU_SIGNAL_HANDLING_ENABLED
    typedef cds::urcu::gc< cds::urcu::signal_buffered_stripped >  rcu_shb;
    typedef cds::urcu::gc< cds::urcu::signal_threaded_stripped >  rcu_sht;
#endif

    template <typename Key>
    struct less;

    template <typename Key>
    struct cmp {
        int operator ()(Key const& k1, Key const& k2) const
        {
            if ( less<Key>( k1, k2 ))
                return -1;
            return less<Key>( k2, k1 ) ? 1 : 0;
        }
    };

    template <typename Key>
    struct hash;

#define CDSUNIT_INT_COMPARE(t)  template <> struct cmp<t> { int operator()( t k1, t k2 ) const { return (int)(k1 - k2); } }
    CDSUNIT_INT_COMPARE(char);
    CDSUNIT_INT_COMPARE(unsigned char);
    CDSUNIT_INT_COMPARE(int);
    CDSUNIT_INT_COMPARE(unsigned int);
    CDSUNIT_INT_COMPARE(long);
    CDSUNIT_INT_COMPARE(unsigned long);
    CDSUNIT_INT_COMPARE(long long);
    CDSUNIT_INT_COMPARE(unsigned long long);
#undef CDSUNIT_INT_COMPARE

#define CDSUNIT_INT_LESS(t)  template <> struct less<t> { bool operator()( t k1, t k2 ) const { return k1 < k2; } }
    CDSUNIT_INT_LESS( char );
    CDSUNIT_INT_LESS( unsigned char );
    CDSUNIT_INT_LESS( int );
    CDSUNIT_INT_LESS( unsigned int );
    CDSUNIT_INT_LESS( long );
    CDSUNIT_INT_LESS( unsigned long );
    CDSUNIT_INT_LESS( long long );
    CDSUNIT_INT_LESS( unsigned long long );
#undef CDSUNIT_INT_LESS

    template <>
    struct cmp<std::string>
    {
        int operator()(std::string const& s1, std::string const& s2)
        {
            return s1.compare( s2 );
        }
        int operator()(std::string const& s1, char const * s2)
        {
            return s1.compare( s2 );
        }
        int operator()(char const * s1, std::string const& s2)
        {
            return -s2.compare( s1 );
        }
    };

    template <>
    struct less<std::string>
    {
        bool operator ()( std::string const& k1, std::string const& k2 ) const
        {
            return cmp<std::string>()(k1, k2) < 0;
        }
        bool operator ()( std::string const& k1, char const* k2 ) const
        {
            return cmp<std::string>()(k1, k2) < 0;
        }
        bool operator ()( char const* k1, std::string const& k2 ) const
        {
            return cmp<std::string>()(k1, k2) < 0;
        }
    };

    template <typename T>
    struct hash
    {
        typedef size_t result_type;
        typedef T      argument_type;

        size_t operator()( T const& k ) const
        {
            return std::hash<size_t>()(k.nKey);
        }

        size_t operator()( size_t k ) const
        {
            return std::hash<size_t>()(k);
        }
    };

    template <>
    struct hash<size_t>
    {
        typedef size_t result_type;
        typedef size_t argument_type;

        size_t operator()( size_t k ) const
        {
            return std::hash<size_t>()(k);
        }
    };

    template <>
    struct hash<std::string>
    {
        typedef size_t result_type;
        typedef std::string argument_type;

        size_t operator()( std::string const& k ) const
        {
            return std::hash<std::string>()(k);
        }
    };

    // forward
    template <typename ImplSelector, typename Key, typename Value>
    struct map_type;

    template <typename Key, typename Value>
    struct map_type_base
    {
        typedef map::hash<Key>    key_hash;
        typedef map::less<Key>    key_less;
        typedef cmp<Key>          key_compare;

        struct equal_to {
            bool operator()( Key const& k1, Key const& k2 ) const
            {
                return key_compare()( k1, k2 ) == 0;
            }
        };

        struct hash2: public key_hash
        {
            size_t operator()( Key const& k ) const
            {
                size_t h = key_hash::operator ()( k );
                size_t seed = ~h;
                seed ^= h + 0x9e3779b9 + (seed << 6) + (seed >> 2);
                return seed;
            }
            template <typename Q>
            size_t operator()( Q const& k ) const
            {
                size_t h = key_hash::operator ()( k );
                size_t seed = ~h;
                seed ^= h + 0x9e3779b9 + (seed << 6) + (seed >> 2);
                return seed;
            }
        };
    };

    struct empty_stat {};
    static inline cds_test::property_stream& operator <<( cds_test::property_stream& o, empty_stat const& )
    {
        return o;
    }

    template <typename Map>
    static inline void print_stat( cds_test::property_stream& o, Map const& m )
    {
        o << m.statistics();
    }


    template <typename Map>
    static inline void check_before_cleanup( Map& /*m*/ )
    {}

    template <typename Map>
    static inline void additional_cleanup( Map& /*m*/ )
    {}

    template <typename Map>
    static inline void additional_check( Map& /*m*/ )
    {}

} // namespace map

#endif // ifndef CDSUNIT_MAP_TYPE_H
