1 // Boost.Range library
2 //
3 //  Copyright Neil Groves 2014. Use, modification and
4 //  distribution is subject to the Boost Software License, Version
5 //  1.0. (See accompanying file LICENSE_1_0.txt or copy at
6 //  http://www.boost.org/LICENSE_1_0.txt)
7 //
8 // For more information, see http://www.boost.org/libs/range/
9 //
10 #define BOOST_RANGE_combined_args(z, n, i) \
11     BOOST_PP_CAT(R, n)&& BOOST_PP_CAT(r, n)
12 
13 #define BOOST_RANGE_combined_range_iterator(z, n, i) \
14     typename range_iterator< \
15         typename remove_reference<BOOST_PP_CAT(R,n)>::type \
16   >::type
17 
18 
19 #define BOOST_RANGE_combine(z, n, data) \
20     template <BOOST_PP_ENUM_PARAMS(n, typename R)> \
21     inline range::combined_range< \
22         tuple<BOOST_PP_ENUM(n, BOOST_RANGE_combined_range_iterator, ~)> \
23     > \
24     combine(BOOST_PP_ENUM(n, BOOST_RANGE_combined_args, ~)) \
25     { \
26         typedef tuple< \
27             BOOST_PP_ENUM(n, BOOST_RANGE_combined_range_iterator, ~) \
28         > rng_tuple_t; \
29         return range::combined_range<rng_tuple_t>( \
30             rng_tuple_t(BOOST_PP_ENUM(n, BOOST_RANGE_combined_seq, begin)), \
31             rng_tuple_t(BOOST_PP_ENUM(n, BOOST_RANGE_combined_seq, end))); \
32     }
33