| // Boost.Range library |
| // |
| // Copyright Neil Groves 2014. Use, modification and |
| // distribution is subject to the Boost Software License, Version |
| // 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
| // http://www.boost.org/LICENSE_1_0.txt) |
| // |
| // For more information, see http://www.boost.org/libs/range/ |
| // |
| #define BOOST_RANGE_combined_exp_pred(d, data) BOOST_PP_TUPLE_ELEM(3, 0, data) |
| |
| #define BOOST_RANGE_combined_exp_op(d, data) \ |
| ( \ |
| BOOST_PP_DEC( \ |
| BOOST_PP_TUPLE_ELEM(3, 0, data) \ |
| ), \ |
| BOOST_PP_TUPLE_ELEM(3, 1, data), \ |
| BOOST_PP_MUL_D( \ |
| d, \ |
| BOOST_PP_TUPLE_ELEM(3, 2, data), \ |
| BOOST_PP_TUPLE_ELEM(3, 1, data) \ |
| ) \ |
| ) |
| |
| #define BOOST_RANGE_combined_exp(x, n) \ |
| BOOST_PP_TUPLE_ELEM(3, 2, \ |
| BOOST_PP_WHILE(BOOST_RANGE_combined_exp_pred, \ |
| BOOST_RANGE_combined_exp_op, (n, x, 1))) |
| |
| #define BOOST_RANGE_combined_bitset_pred(n, state) \ |
| BOOST_PP_TUPLE_ELEM(2,1,state) |
| |
| #define BOOST_RANGE_combined_bitset_op(d, state) \ |
| (BOOST_PP_DIV_D(d, BOOST_PP_TUPLE_ELEM(2,0,state), 2), \ |
| BOOST_PP_DEC(BOOST_PP_TUPLE_ELEM(2,1,state))) |
| |
| #define BOOST_RANGE_combined_bitset(i, n) \ |
| BOOST_PP_MOD(BOOST_PP_TUPLE_ELEM(2, 0, \ |
| BOOST_PP_WHILE(BOOST_RANGE_combined_bitset_pred, \ |
| BOOST_RANGE_combined_bitset_op, (i,n))), 2) |
| |
| #define BOOST_RANGE_combined_range_iterator(z, n, i) \ |
| typename range_iterator< \ |
| BOOST_PP_CAT(R,n) \ |
| BOOST_PP_IF( \ |
| BOOST_RANGE_combined_bitset(i,n), \ |
| BOOST_PP_IDENTITY(const), \ |
| BOOST_PP_EMPTY)() \ |
| >::type |
| |
| #define BOOST_RANGE_combined_args(z, n, i) \ |
| BOOST_PP_CAT(R, n) \ |
| BOOST_PP_IF(BOOST_RANGE_combined_bitset(i,n), const&, &) \ |
| BOOST_PP_CAT(r, n) |
| |
| #define BOOST_RANGE_combine_impl(z, i, n)\ |
| template<BOOST_PP_ENUM_PARAMS(n, typename R)> \ |
| inline range::combined_range< \ |
| boost::tuple<BOOST_PP_ENUM(n, BOOST_RANGE_combined_range_iterator, i)> \ |
| > \ |
| combine(BOOST_PP_ENUM(n, BOOST_RANGE_combined_args, i)) \ |
| { \ |
| typedef tuple< \ |
| BOOST_PP_ENUM(n, BOOST_RANGE_combined_range_iterator, i) \ |
| > rng_tuple_t; \ |
| return range::combined_range<rng_tuple_t>( \ |
| rng_tuple_t(BOOST_PP_ENUM(n, BOOST_RANGE_combined_seq, begin)), \ |
| rng_tuple_t(BOOST_PP_ENUM(n, BOOST_RANGE_combined_seq, end))); \ |
| } |
| |
| |
| #define BOOST_RANGE_combine(z, n, data) \ |
| BOOST_PP_REPEAT(BOOST_RANGE_combined_exp(2,n), BOOST_RANGE_combine_impl, n) |