1# /* Copyright (C) 2001
2# * Housemarque Oy
3# * http://www.housemarque.com
4# *
5# * Distributed under the Boost Software License, Version 1.0. (See
6# * accompanying file LICENSE_1_0.txt or copy at
7# * http://www.boost.org/LICENSE_1_0.txt)
8# */
9#
10# /* Revised by Paul Mensonides (2002) */
11#
12# /* See http://www.boost.org for most recent version. */
13#
14# ifndef BOOST_PREPROCESSOR_LIST_TO_TUPLE_HPP
15# define BOOST_PREPROCESSOR_LIST_TO_TUPLE_HPP
16#
17# include <boost/preprocessor/config/config.hpp>
18# include <boost/preprocessor/list/enum.hpp>
19# include <boost/preprocessor/control/iif.hpp>
20#
21# /* BOOST_PP_LIST_TO_TUPLE */
22#
23# define BOOST_PP_LIST_TO_TUPLE(list) \
24 BOOST_PP_IIF \
25 ( \
26 BOOST_PP_LIST_IS_NIL(list), \
27 BOOST_PP_LIST_TO_TUPLE_EMPTY, \
28 BOOST_PP_LIST_TO_TUPLE_DO \
29 ) \
30 (list) \
31/**/
32# define BOOST_PP_LIST_TO_TUPLE_EMPTY(list)
33#
34# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
35# define BOOST_PP_LIST_TO_TUPLE_DO(list) (BOOST_PP_LIST_ENUM(list))
36# else
37# define BOOST_PP_LIST_TO_TUPLE_DO(list) BOOST_PP_LIST_TO_TUPLE_I(list)
38# define BOOST_PP_LIST_TO_TUPLE_I(list) (BOOST_PP_LIST_ENUM(list))
39# endif
40#
41# /* BOOST_PP_LIST_TO_TUPLE_R */
42#
43# define BOOST_PP_LIST_TO_TUPLE_R(r, list) \
44 BOOST_PP_IIF \
45 ( \
46 BOOST_PP_LIST_IS_NIL(list), \
47 BOOST_PP_LIST_TO_TUPLE_R_EMPTY, \
48 BOOST_PP_LIST_TO_TUPLE_R_DO \
49 ) \
50 (r, list) \
51/**/
52# define BOOST_PP_LIST_TO_TUPLE_R_EMPTY(r,list)
53#
54# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
55# define BOOST_PP_LIST_TO_TUPLE_R_DO(r, list) (BOOST_PP_LIST_ENUM_R(r, list))
56# else
57# define BOOST_PP_LIST_TO_TUPLE_R_DO(r, list) BOOST_PP_LIST_TO_TUPLE_R_I(r, list)
58# define BOOST_PP_LIST_TO_TUPLE_R_I(r, list) (BOOST_PP_LIST_ENUM_R(r, list))
59# endif
60#
61# endif
62

source code of boost/boost/preprocessor/list/to_tuple.hpp