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add adaptor piped, taken, dropped, window, offset, adapted_xxx

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bolero-MURAKAMI 2012-11-24 13:04:02 +09:00
parent 5c9a8153de
commit cc4ade67fd
47 changed files with 1349 additions and 76 deletions
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72
sprout/range/adaptor/adapted_taken.hpp Normal file
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#ifndef SPROUT_RANGE_ADAPTOR_ADAPTED_TAKEN_HPP
#define SPROUT_RANGE_ADAPTOR_ADAPTED_TAKEN_HPP
#include <sprout/config.hpp>
#include <sprout/utility/lvalue_forward.hpp>
#include <sprout/range/adaptor/taken.hpp>
#include <sprout/range/adaptor/dropped.hpp>
#include <sprout/range/adaptor/jointed.hpp>
namespace sprout {
namespace adaptors {
//
// adapt_take_holder
//
template<typename Adaptor, typename Difference>
class adapt_take_holder {
public:
typedef Adaptor adaptor_type;
typedef Difference difference_type;
private:
adaptor_type adaptor_;
difference_type distance_;
public:
explicit SPROUT_CONSTEXPR adapt_take_holder(adaptor_type const& adaptor, difference_type distance)
: adaptor_(adaptor), distance_(distance)
{}
SPROUT_CONSTEXPR adaptor_type const& adaptor() const {
return adaptor_;
}
SPROUT_CONSTEXPR difference_type const& distance() const {
return distance_;
}
};
//
// adapted_taken_forwarder
//
class adapted_taken_forwarder {
public:
template<typename Adaptor, typename Difference>
SPROUT_CONSTEXPR sprout::adaptors::adapt_take_holder<Adaptor, Difference>
operator()(Adaptor const& adaptor, Difference distance) {
return sprout::adaptors::adapt_take_holder<Adaptor, Difference>(adaptor, distance);
}
};
//
// adapted_taken
//
namespace {
SPROUT_STATIC_CONSTEXPR sprout::adaptors::adapted_taken_forwarder adapted_taken{};
} // anonymous-namespace
//
// operator|
//
template<typename Range, typename Adaptor, typename Difference>
inline SPROUT_CONSTEXPR auto
operator|(Range&& lhs, sprout::adaptors::adapt_take_holder<Adaptor, Difference> const& rhs)
-> decltype(
sprout::lvalue_forward<Range>(lhs) | sprout::adaptors::taken(rhs.distance()) | rhs.adaptor()
| sprout::adaptors::jointed(sprout::lvalue_forward<Range>(lhs) | sprout::adaptors::dropped(rhs.distance()))
)
{
return sprout::lvalue_forward<Range>(lhs) | sprout::adaptors::taken(rhs.distance()) | rhs.adaptor()
| sprout::adaptors::jointed(sprout::lvalue_forward<Range>(lhs) | sprout::adaptors::dropped(rhs.distance()))
;
}
} // namespace adaptors
} // namespace sprout
#endif // #ifndef SPROUT_RANGE_ADAPTOR_ADAPTED_TAKEN_HPP