74 lines
2.5 KiB
Plaintext
74 lines
2.5 KiB
Plaintext
// 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)
|