mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-14 10:39:05 +00:00
119 lines
3.8 KiB
C++
119 lines
3.8 KiB
C++
/*=============================================================================
|
|
Copyright (c) 2011-2016 Bolero MURAKAMI
|
|
https://github.com/bolero-MURAKAMI/Sprout
|
|
|
|
Distributed under 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)
|
|
=============================================================================*/
|
|
#ifndef SPROUT_RANGE_ADAPTOR_COPIED_HPP
|
|
#define SPROUT_RANGE_ADAPTOR_COPIED_HPP
|
|
|
|
#include <type_traits>
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/container/traits.hpp>
|
|
#include <sprout/container/functions.hpp>
|
|
#include <sprout/algorithm/fixed/results.hpp>
|
|
#include <sprout/range/adaptor/detail/adapted_range_default.hpp>
|
|
#include <sprout/range/algorithm/fixed/copy.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 {
|
|
//
|
|
// copied_range
|
|
//
|
|
template<typename Range>
|
|
class copied_range
|
|
: public sprout::adaptors::detail::adapted_range_default<Range>
|
|
{
|
|
public:
|
|
typedef sprout::adaptors::detail::adapted_range_default<Range> base_type;
|
|
typedef typename base_type::range_type range_type;
|
|
public:
|
|
SPROUT_CONSTEXPR copied_range() SPROUT_DEFAULTED_DEFAULT_CONSTRUCTOR_DECL
|
|
copied_range(copied_range const&) = default;
|
|
explicit SPROUT_CONSTEXPR copied_range(range_type& range)
|
|
: base_type(
|
|
sprout::begin(range),
|
|
sprout::end(range)
|
|
)
|
|
{}
|
|
template<typename Result>
|
|
SPROUT_CONSTEXPR operator Result() const {
|
|
return sprout::range::fixed::copy<Result>(*this);
|
|
}
|
|
};
|
|
|
|
//
|
|
// copy_holder
|
|
//
|
|
template<typename Result>
|
|
class copy_holder {
|
|
public:
|
|
typedef Result result_type;
|
|
private:
|
|
sprout::value_holder<result_type&> result_;
|
|
public:
|
|
SPROUT_CONSTEXPR copy_holder() SPROUT_DEFAULTED_DEFAULT_CONSTRUCTOR_DECL
|
|
copy_holder(copy_holder const&) = default;
|
|
explicit SPROUT_CONSTEXPR copy_holder(result_type& result)
|
|
: result_(result)
|
|
{}
|
|
SPROUT_CONSTEXPR result_type const& result() const {
|
|
return result_;
|
|
}
|
|
};
|
|
|
|
//
|
|
// copied_forwarder
|
|
//
|
|
class copied_forwarder {
|
|
public:
|
|
template<typename Result>
|
|
SPROUT_CONSTEXPR typename sprout::adaptors::copy_holder<Result const>
|
|
operator()(Result const& result) const {
|
|
return typename sprout::adaptors::copy_holder<Result const>(result);
|
|
}
|
|
};
|
|
|
|
//
|
|
// copied
|
|
//
|
|
namespace {
|
|
SPROUT_STATIC_CONSTEXPR sprout::adaptors::copied_forwarder copied = {};
|
|
} // anonymous-namespace
|
|
|
|
//
|
|
// operator|
|
|
//
|
|
template<typename Range, typename Result>
|
|
inline SPROUT_CONSTEXPR typename sprout::fixed::results::algorithm<Result>::type
|
|
operator|(Range&& lhs, sprout::adaptors::copy_holder<Result> const& rhs) {
|
|
return sprout::range::fixed::copy(sprout::lvalue_forward<Range>(lhs), rhs.result());
|
|
}
|
|
template<typename Range>
|
|
inline SPROUT_CONSTEXPR sprout::adaptors::copied_range<
|
|
typename std::remove_reference<typename sprout::lvalue_reference<Range>::type>::type
|
|
>
|
|
operator|(Range&& lhs, sprout::adaptors::copied_forwarder const&) {
|
|
return sprout::adaptors::copied_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::copied_range<Range> >
|
|
: public sprout::container_construct_traits<typename sprout::adaptors::copied_range<Range>::base_type>
|
|
{};
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_RANGE_ADAPTOR_COPIED_HPP
|