convert.hpp

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// -----------------------------------------------------------------------------------------------------
// Copyright (c) 2022 deCODE Genetics
// 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/biocpp/biocpp-core/blob/main/LICENSE.md
// -----------------------------------------------------------------------------------------------------
 
#pragma once
 
#include <concepts>
#include <ranges>
 
#include <bio/core.hpp>
 
namespace bio::ranges::views
{
 
template <typename out_t>
auto const convert = std::views::transform(
  [](auto && in) -> out_t
  {
      static_assert(std::convertible_to<decltype(in) &&, out_t> || std::constructible_from<out_t, decltype(in) &&>,
                    "The reference type of the input to views::convert is not convertible to out_t.");
 
      if constexpr (std::convertible_to<decltype(in) &&, out_t>)
          return std::forward<decltype(in)>(in);
      else
          return static_cast<out_t>(std::forward<decltype(in)>(in));
  });
 
 
} // namespace bio::ranges::views