affine_cell_proxy.hpp

Go to the documentation of this file.

// -----------------------------------------------------------------------------------------------------
// Copyright (c) 2006-2020, Knut Reinert & Freie Universität Berlin
// Copyright (c) 2016-2020, Knut Reinert & MPI für molekulare Genetik
// This file may be used, modified and/or redistributed under the terms of the 3-clause BSD-License
// shipped with this file and also available at: https://github.com/seqan/seqan3/blob/master/LICENSE.md
// -----------------------------------------------------------------------------------------------------
 
#pragma once
 
#include <tuple>
#include <type_traits>
 
#include <seqan3/core/concept/core_language.hpp>
#include <seqan3/core/simd/concept.hpp>
#include <seqan3/core/tuple_utility.hpp>
 
namespace seqan3::detail
{
 
template <typename t>
SEQAN3_CONCEPT arithmetic_or_simd = arithmetic<t> || simd_concept<t>;
 
template <typename t>
SEQAN3_CONCEPT affine_score_cell = tuple_like<t> &&
                                   std::tuple_size_v<t> == 3 &&
                                   arithmetic_or_simd<std::remove_reference_t<std::tuple_element_t<0, t>>> &&
                                   arithmetic_or_simd<std::remove_reference_t<std::tuple_element_t<1, t>>> &&
                                   arithmetic_or_simd<std::remove_reference_t<std::tuple_element_t<2, t>>>;
 
template <affine_score_cell tuple_t>
    requires (std::tuple_size_v<tuple_t> == 3)
class affine_cell_proxy : public tuple_t
{
public:
    affine_cell_proxy()= default; 
    affine_cell_proxy(affine_cell_proxy const &) = default; 
    affine_cell_proxy(affine_cell_proxy &&) = default; 
    affine_cell_proxy & operator=(affine_cell_proxy const &) = default; 
    affine_cell_proxy & operator=(affine_cell_proxy &&) = default; 
    ~affine_cell_proxy() = default; 
 
    // Inherit the tuple constructors and assignment.
    using tuple_t::tuple_t;
    using tuple_t::operator=;
 
    decltype(auto) best_score() & noexcept { return get_score_impl<0>(*this); }
    decltype(auto) best_score() const & noexcept { return get_score_impl<0>(*this); }
    decltype(auto) best_score() && noexcept { return get_score_impl<0>(std::move(*this)); }
    decltype(auto) best_score() const && noexcept
    { //Unfortunately gcc7 does not preserve the const && type: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94967
        using return_t = std::tuple_element_t<0, tuple_t>;
        return static_cast<return_t const &&>(get_score_impl<0>(std::move(*this)));
    }
 
    decltype(auto) horizontal_score() & noexcept { return get_score_impl<1>(*this); }
    decltype(auto) horizontal_score() const & noexcept { return get_score_impl<1>(*this); }
    decltype(auto) horizontal_score() && noexcept { return get_score_impl<1>(std::move(*this)); }
     decltype(auto) horizontal_score() const && noexcept
    { //Unfortunately gcc7 does not preserve the const && type: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94967
        using return_t = std::tuple_element_t<1, tuple_t>;
        return static_cast<return_t const &&>(get_score_impl<1>(std::move(*this)));
    }
 
    decltype(auto) vertical_score() & noexcept { return get_score_impl<2>(*this); }
    decltype(auto) vertical_score() const & noexcept { return get_score_impl<2>(*this); }
    decltype(auto) vertical_score() && noexcept { return get_score_impl<2>(std::move(*this)); }
    decltype(auto) vertical_score() const && noexcept
    { //Unfortunately gcc7 does not preserve the const && type: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94967
        using return_t = std::tuple_element_t<2, tuple_t>;
        return static_cast<return_t const &&>(get_score_impl<2>(std::move(*this)));
    }
 
private:
    template <size_t index, typename this_t>
        requires (index < 3)
    static constexpr decltype(auto) get_score_impl(this_t && me) noexcept
    {
        using std::get;
 
        return get<index>(std::forward<this_t>(me));
    }
};
} // namespace seqan3::detail
 
namespace std
{
template <typename tuple_t>
struct tuple_size<seqan3::detail::affine_cell_proxy<tuple_t>> : tuple_size<tuple_t>
{};
 
template <size_t index, typename tuple_t>
struct tuple_element<index, seqan3::detail::affine_cell_proxy<tuple_t>> : tuple_element<index, tuple_t>
{};
} // namespace std