typelist.hpp

Go to the documentation of this file.

/*
  TYPELIST.hpp  -  typelist meta programming facilities
 
   Copyright (C)
     2008,            Hermann Vosseler <Ichthyostega@web.de>
 
 **Lumiera** 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. See the file COPYING for further details.
 
====================================================================
This code is heavily inspired by
 The Loki Library (loki-lib/trunk/include/loki/Sequence.h)
    Copyright (c) 2001 by Andrei Alexandrescu
    Copyright (c) 2005 by Peter Kümmel
    This Loki code accompanies the book:
    Alexandrescu, Andrei. "Modern C++ Design: Generic Programming
        and Design Patterns Applied".
        Copyright (c) 2001. Addison-Wesley. ISBN 0201704315
 
  Loki Copyright Notice:
  Permission to use, copy, modify, distribute and sell this software for any
  purpose is hereby granted without fee, provided that the above copyright
  notice appear in all copies and that both that copyright notice and this
  permission notice appear in supporting documentation.
  The author makes no representations about the suitability of this software
  for any purpose. It is provided "as is" without express or implied warranty.
*/
 
 
#ifndef LIB_META_TYPELIST_H
#define LIB_META_TYPELIST_H
 
 
 
 
namespace lib {
namespace meta {
  
  struct Nil
    {
      using List = Nil;
    };
  
  template<class H, class T>
  struct Node
    {
      using List = Node;
      using Head = H;
      using Tail = T;
    };
  
  using NilNode = Node<Nil,Nil>;
  
  
 
  template<typename...TYPES>
  struct Types;
  
  template<typename T, typename...TS>
  struct Types<T,TS...>
    {
      using List = Node<T, typename Types<TS...>::List>;
      using Seq  = Types;
    };
  
  template<>
  struct Types<>
    {
      using List = Nil;
      using Seq  = Types<>;
    };
  
}} // namespace lib::meta
#endif