1 # /* **************************************************************************
2 #  *                                                                          *
3 #  *     (C) Copyright Paul Mensonides 2002.
4 #  *     Distributed under the Boost Software License, Version 1.0. (See
5 #  *     accompanying file LICENSE_1_0.txt or copy at
6 #  *     http://www.boost.org/LICENSE_1_0.txt)
7 #  *                                                                          *
8 #  ************************************************************************** */
9 #
10 # /* See http://www.boost.org for most recent version. */
11 #
12 # ifndef BOOST_PREPROCESSOR_DETAIL_CHECK_HPP
13 # define BOOST_PREPROCESSOR_DETAIL_CHECK_HPP
14 #
15 # include <boost/preprocessor/cat.hpp>
16 # include <boost/preprocessor/config/config.hpp>
17 #
18 # /* BOOST_PP_CHECK */
19 #
20 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MWCC()
21 #    define BOOST_PP_CHECK(x, type) BOOST_PP_CHECK_D(x, type)
22 # else
23 #    define BOOST_PP_CHECK(x, type) BOOST_PP_CHECK_OO((x, type))
24 #    define BOOST_PP_CHECK_OO(par) BOOST_PP_CHECK_D ## par
25 # endif
26 #
27 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MSVC() && ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_DMC()
28 #    define BOOST_PP_CHECK_D(x, type) BOOST_PP_CHECK_1(BOOST_PP_CAT(BOOST_PP_CHECK_RESULT_, type x))
29 #    define BOOST_PP_CHECK_1(chk) BOOST_PP_CHECK_2(chk)
30 #    define BOOST_PP_CHECK_2(res, _) res
31 # elif BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MSVC()
32 #    define BOOST_PP_CHECK_D(x, type) BOOST_PP_CHECK_1(type x)
33 #    define BOOST_PP_CHECK_1(chk) BOOST_PP_CHECK_2(chk)
34 #    define BOOST_PP_CHECK_2(chk) BOOST_PP_CHECK_3((BOOST_PP_CHECK_RESULT_ ## chk))
35 #    define BOOST_PP_CHECK_3(im) BOOST_PP_CHECK_5(BOOST_PP_CHECK_4 im)
36 #    define BOOST_PP_CHECK_4(res, _) res
37 #    define BOOST_PP_CHECK_5(res) res
38 # else /* DMC */
39 #    define BOOST_PP_CHECK_D(x, type) BOOST_PP_CHECK_OO((type x))
40 #    define BOOST_PP_CHECK_OO(par) BOOST_PP_CHECK_0 ## par
41 #    define BOOST_PP_CHECK_0(chk) BOOST_PP_CHECK_1(BOOST_PP_CAT(BOOST_PP_CHECK_RESULT_, chk))
42 #    define BOOST_PP_CHECK_1(chk) BOOST_PP_CHECK_2(chk)
43 #    define BOOST_PP_CHECK_2(res, _) res
44 # endif
45 #
46 # define BOOST_PP_CHECK_RESULT_1 1, BOOST_PP_NIL
47 #
48 # endif
49