mirror of
https://github.com/bolero-MURAKAMI/Sprout
synced 2024-11-12 21:09:01 +00:00
207 lines
6.5 KiB
C++
207 lines
6.5 KiB
C++
#ifndef SPROUT_RANGE_ADAPTOR_TRANSFORMD_HPP
|
|
#define SPROUT_RANGE_ADAPTOR_TRANSFORMD_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/utility/value_holder/value_holder.hpp>
|
|
|
|
namespace sprout {
|
|
namespace adaptors {
|
|
//
|
|
// transformed_range
|
|
//
|
|
template<typename BinaryFunction, typename LRange, typename RRange = void>
|
|
class transformed_range
|
|
: public sprout::adaptors::detail::adapted_range_default<
|
|
LRange,
|
|
sprout::transform_iterator<
|
|
BinaryFunction,
|
|
typename sprout::container_traits<LRange>::iterator,
|
|
typename sprout::container_traits<RRange>::iterator
|
|
>
|
|
>
|
|
{
|
|
public:
|
|
typedef BinaryFunction functor_type;
|
|
typedef LRange range1_type;
|
|
typedef RRange range2_type;
|
|
typedef sprout::adaptors::detail::adapted_range_default<
|
|
LRange,
|
|
sprout::transform_iterator<
|
|
BinaryFunction,
|
|
typename sprout::container_traits<LRange>::iterator,
|
|
typename sprout::container_traits<RRange>::iterator
|
|
>
|
|
> base_type;
|
|
typedef typename base_type::iterator iterator;
|
|
public:
|
|
transformed_range() = default;
|
|
transformed_range(transformed_range const&) = default;
|
|
SPROUT_CONSTEXPR transformed_range(BinaryFunction func, range1_type& range1, range2_type& range2)
|
|
: base_type(
|
|
iterator(sprout::begin(range1), sprout::begin(range2), func),
|
|
iterator(sprout::end(range1), sprout::end(range2), func)
|
|
)
|
|
{}
|
|
};
|
|
|
|
template<typename UnaryFunction, typename Range>
|
|
class transformed_range<UnaryFunction, Range, void>
|
|
: public sprout::adaptors::detail::adapted_range_default<
|
|
Range,
|
|
sprout::transform_iterator<
|
|
UnaryFunction,
|
|
typename sprout::container_traits<Range>::iterator
|
|
>
|
|
>
|
|
{
|
|
public:
|
|
typedef UnaryFunction functor_type;
|
|
typedef Range range1_type;
|
|
typedef sprout::adaptors::detail::adapted_range_default<
|
|
Range,
|
|
sprout::transform_iterator<
|
|
UnaryFunction,
|
|
typename sprout::container_traits<Range>::iterator
|
|
>
|
|
> base_type;
|
|
typedef typename base_type::iterator iterator;
|
|
public:
|
|
transformed_range() = default;
|
|
transformed_range(transformed_range const&) = default;
|
|
SPROUT_CONSTEXPR transformed_range(UnaryFunction func, range1_type& range)
|
|
: base_type(
|
|
iterator(sprout::begin(range), func),
|
|
iterator(sprout::end(range), func)
|
|
)
|
|
{}
|
|
};
|
|
|
|
//
|
|
// transform_holder
|
|
//
|
|
template<typename BinaryFunction, typename RRange = void>
|
|
class transform_holder {
|
|
public:
|
|
typedef BinaryFunction functor_type;
|
|
typedef RRange range2_type;
|
|
private:
|
|
BinaryFunction func_;
|
|
sprout::value_holder<range2_type&> range_;
|
|
public:
|
|
transform_holder() = default;
|
|
transform_holder(transform_holder const&) = default;
|
|
SPROUT_CONSTEXPR transform_holder(BinaryFunction func, range2_type& range)
|
|
: func_(func)
|
|
, range_(range)
|
|
{}
|
|
SPROUT_CONSTEXPR BinaryFunction functor() const {
|
|
return func_;
|
|
}
|
|
SPROUT_CONSTEXPR range2_type& range() const {
|
|
return range_;
|
|
}
|
|
};
|
|
template<typename UnaryFunction>
|
|
class transform_holder<UnaryFunction, void> {
|
|
public:
|
|
typedef UnaryFunction functor_type;
|
|
private:
|
|
UnaryFunction func_;
|
|
public:
|
|
transform_holder() = default;
|
|
transform_holder(transform_holder const&) = default;
|
|
explicit SPROUT_CONSTEXPR transform_holder(UnaryFunction func)
|
|
: func_(func)
|
|
{}
|
|
SPROUT_CONSTEXPR UnaryFunction functor() const {
|
|
return func_;
|
|
}
|
|
};
|
|
|
|
//
|
|
// transformed_forwarder
|
|
//
|
|
class transformed_forwarder {
|
|
public:
|
|
template<typename RRange, typename BinaryFunction>
|
|
SPROUT_CONSTEXPR sprout::adaptors::transform_holder<
|
|
BinaryFunction,
|
|
typename std::remove_reference<typename sprout::lvalue_reference<RRange>::type>::type
|
|
>
|
|
operator()(RRange&& range, BinaryFunction func) const {
|
|
return sprout::adaptors::transform_holder<
|
|
BinaryFunction,
|
|
typename std::remove_reference<typename sprout::lvalue_reference<RRange>::type>::type
|
|
>(
|
|
func,
|
|
sprout::lvalue_forward<RRange>(range)
|
|
);
|
|
}
|
|
template<typename UnaryFunction>
|
|
SPROUT_CONSTEXPR sprout::adaptors::transform_holder<UnaryFunction>
|
|
operator()(UnaryFunction func) const {
|
|
return sprout::adaptors::transform_holder<UnaryFunction>(func);
|
|
}
|
|
};
|
|
|
|
//
|
|
// transformed
|
|
//
|
|
namespace {
|
|
SPROUT_STATIC_CONSTEXPR sprout::adaptors::transformed_forwarder transformed = {};
|
|
} // anonymous-namespace
|
|
|
|
//
|
|
// operator|
|
|
//
|
|
template<typename LRange, typename BinaryFunction, typename RRange>
|
|
inline SPROUT_CONSTEXPR sprout::adaptors::transformed_range<
|
|
BinaryFunction,
|
|
typename std::remove_reference<typename sprout::lvalue_reference<LRange>::type>::type,
|
|
RRange
|
|
>
|
|
operator|(LRange&& lhs, sprout::adaptors::transform_holder<BinaryFunction, RRange> const& rhs) {
|
|
return sprout::adaptors::transformed_range<
|
|
BinaryFunction,
|
|
typename std::remove_reference<typename sprout::lvalue_reference<LRange>::type>::type,
|
|
RRange
|
|
>(
|
|
rhs.functor(),
|
|
sprout::lvalue_forward<LRange>(lhs),
|
|
rhs.range()
|
|
);
|
|
}
|
|
template<typename Range, typename UnaryFunction>
|
|
inline SPROUT_CONSTEXPR sprout::adaptors::transformed_range<
|
|
UnaryFunction,
|
|
typename std::remove_reference<typename sprout::lvalue_reference<Range>::type>::type
|
|
>
|
|
operator|(Range&& lhs, sprout::adaptors::transform_holder<UnaryFunction> const& rhs) {
|
|
return sprout::adaptors::transformed_range<
|
|
UnaryFunction,
|
|
typename std::remove_reference<typename sprout::lvalue_reference<Range>::type>::type
|
|
>(
|
|
rhs.functor(),
|
|
sprout::lvalue_forward<Range>(lhs)
|
|
);
|
|
}
|
|
} // namespace adaptors
|
|
|
|
//
|
|
// container_construct_traits
|
|
//
|
|
template<typename UnaryOrBinaryFunction, typename LRange, typename RRange>
|
|
struct container_construct_traits<sprout::adaptors::transformed_range<UnaryOrBinaryFunction, LRange, RRange> >
|
|
: public sprout::container_construct_traits<typename sprout::adaptors::transformed_range<UnaryOrBinaryFunction, LRange, RRange>::base_type>
|
|
{};
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_RANGE_ADAPTOR_TRANSFORMD_HPP
|