TypeList.h

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/*
 * This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 *
 * This program 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 General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef TRINITY_TYPELIST_H
#define TRINITY_TYPELIST_H
 
/*
  @struct TypeList
  TypeList is the most simple but yet the most powerfull class of all.  It holds
  at compile time the different type of objects in a linked list.
 */
 
class TypeNull;
 
template<typename HEAD, typename TAIL>
struct TypeList
{
    typedef HEAD Head;
    typedef TAIL Tail;
};
 
// enough for now.. can be expand at any point in time as needed
#define TYPELIST_1(T1)                  TypeList<T1, TypeNull>
#define TYPELIST_2(T1, T2)              TypeList<T1, TYPELIST_1(T2) >
#define TYPELIST_3(T1, T2, T3)          TypeList<T1, TYPELIST_2(T2, T3) >
#define TYPELIST_4(T1, T2, T3, T4)      TypeList<T1, TYPELIST_3(T2, T3, T4) >
#define TYPELIST_5(T1, T2, T3, T4, T5)  TypeList<T1, TYPELIST_4(T2, T3, T4, T5) >
#define TYPELIST_6(T1, T2, T3, T4, T5, T6)  TypeList<T1, TYPELIST_5(T2, T3, T4, T5, T6) >
#endif