12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273 |
- // 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)
|