Sprout/sprout/range/adaptor/amplitude_spectrum.hpp
2013-01-27 16:56:14 +09:00

101 lines
3.3 KiB
C++

#ifndef SPROUT_RANGE_ADAPTOR_AMPLITUDE_SPECTRUM_HPP
#define SPROUT_RANGE_ADAPTOR_AMPLITUDE_SPECTRUM_HPP
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/container/traits.hpp>
#include <sprout/container/functions.hpp>
#include <sprout/iterator/transform_iterator.hpp>
#include <sprout/range/adaptor/detail/adapted_range_default.hpp>
#include <sprout/type_traits/lvalue_reference.hpp>
#include <sprout/utility/forward.hpp>
#include <sprout/utility/lvalue_forward.hpp>
#include <sprout/numeric/dft/amplitude_spectrum_value.hpp>
namespace sprout {
namespace adaptors {
namespace detail {
template<typename T>
class amplitude_spectrum_value {
public:
typedef typename T::value_type result_type;
typedef T argument_type;
public:
SPROUT_CONSTEXPR result_type operator()(T const& value) const {
return sprout::amplitude_spectrum_value(value);
}
};
} // namespace detail
//
// amplitude_spectrum_range
//
template<typename Range>
class amplitude_spectrum_range
: public sprout::adaptors::detail::adapted_range_default<
Range,
sprout::transform_iterator<
sprout::adaptors::detail::amplitude_spectrum_value<typename sprout::container_traits<Range>::value_type>,
typename sprout::container_traits<Range>::iterator
>
>
{
public:
typedef sprout::adaptors::detail::adapted_range_default<
Range,
sprout::transform_iterator<
sprout::adaptors::detail::amplitude_spectrum_value<typename sprout::container_traits<Range>::value_type>,
typename sprout::container_traits<Range>::iterator
>
> base_type;
typedef typename base_type::range_type range_type;
typedef typename base_type::iterator iterator;
typedef typename base_type::value_type value_type;
public:
amplitude_spectrum_range() = default;
amplitude_spectrum_range(amplitude_spectrum_range const&) = default;
explicit SPROUT_CONSTEXPR amplitude_spectrum_range(range_type& range)
: base_type(
iterator(sprout::begin(range), typename iterator::functor_type()),
iterator(sprout::end(range), typename iterator::functor_type())
)
{}
};
//
// amplitude_spectrum_forwarder
//
class amplitude_spectrum_forwarder {};
//
// amplitude_spectrum
//
namespace {
SPROUT_STATIC_CONSTEXPR sprout::adaptors::amplitude_spectrum_forwarder amplitude_spectrum = {};
} // anonymous-namespace
//
// operator|
//
template<typename Range>
inline SPROUT_CONSTEXPR sprout::adaptors::amplitude_spectrum_range<
typename std::remove_reference<typename sprout::lvalue_reference<Range>::type>::type
>
operator|(Range&& lhs, amplitude_spectrum_forwarder) {
return sprout::adaptors::amplitude_spectrum_range<
typename std::remove_reference<typename sprout::lvalue_reference<Range>::type>::type
>(
sprout::lvalue_forward<Range>(lhs)
);
}
} // namespace adaptors
//
// container_construct_traits
//
template<typename Range>
struct container_construct_traits<sprout::adaptors::amplitude_spectrum_range<Range> >
: public sprout::container_construct_traits<typename sprout::adaptors::amplitude_spectrum_range<Range>::base_type>
{};
} // namespace sprout
#endif // #ifndef SPROUT_RANGE_ADAPTOR_AMPLITUDE_SPECTRUM_HPP