source: NonGTP/Boost/boost/mpl/empty_sequence.hpp @ 857

Revision 857, 1017 bytes checked in by igarcia, 19 years ago (diff)
RevLine 
[857]1
2#ifndef BOOST_MPL_EMPTY_SEQUENCE_HPP_INCLUDED
3#define BOOST_MPL_EMPTY_SEQUENCE_HPP_INCLUDED
4
5// Copyright Aleksey Gurtovoy 2004
6// Copyright Alexander Nasonov 2004
7//
8// Distributed under the Boost Software License, Version 1.0.
9// (See accompanying file LICENSE_1_0.txt or copy at
10// http://www.boost.org/LICENSE_1_0.txt)
11//
12// See http://www.boost.org/libs/mpl for documentation.
13
14// $Source: /cvsroot/boost/boost/boost/mpl/empty_sequence.hpp,v $
15// $Date: 2004/11/28 01:53:40 $
16// $Revision: 1.2 $
17
18#include <boost/mpl/size_fwd.hpp>
19#include <boost/mpl/int.hpp>
20#include <boost/mpl/iterator_tags.hpp>
21
22namespace boost { namespace mpl {
23
24struct empty_sequence
25{
26    struct tag;
27    struct begin { typedef random_access_iterator_tag category; };   
28    typedef begin end;
29};
30
31template<>
32struct size_impl<empty_sequence::tag>
33{
34    template< typename Sequence > struct apply
35        : int_<0>
36    {
37    };
38};
39
40}}
41
42#endif // #ifndef BOOST_MPL_EMPTY_SEQUENCE_HPP_INCLUDED
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