SeqAn3  3.2.0
The Modern C++ library for sequence analysis.
alphabet/detail/convert.hpp
1 // -----------------------------------------------------------------------------------------------------
2 // Copyright (c) 2006-2022, Knut Reinert & Freie Universität Berlin
3 // Copyright (c) 2016-2022, Knut Reinert & MPI für molekulare Genetik
4 // This file may be used, modified and/or redistributed under the terms of the 3-clause BSD-License
5 // shipped with this file and also available at: https://github.com/seqan/seqan3/blob/master/LICENSE.md
6 // -----------------------------------------------------------------------------------------------------
7 
15 #pragma once
16 
17 #include <array>
18 
20 
21 // ============================================================================
22 // conversion to/from char/rank types
23 // ============================================================================
24 
25 namespace seqan3::detail
26 {
27 
34 template <alphabet in_t, alphabet out_t>
35 constexpr std::array<out_t, alphabet_size<in_t>> convert_through_char_representation{
36  []() constexpr {std::array<out_t, alphabet_size<in_t>> ret{};
37 // for (decltype(alphabet_size<in_t>) i = 0; ...) causes indefinite compilation :(
38 for (auto i = decltype(alphabet_size<in_t>){0}; i < alphabet_size<in_t>; ++i)
39  assign_char_to(to_char(assign_rank_to(i, in_t{})), ret[i]);
40 return ret;
41 } // namespace seqan3::detail
42 ()
43 }
44 ;
45 
46 } // namespace seqan3::detail
Core alphabet concept and free function/type trait wrappers.
constexpr auto assign_char_to
Assign a character to an alphabet object.
Definition: alphabet/concept.hpp:524
constexpr auto to_char
Return the char representation of an alphabet object.
Definition: alphabet/concept.hpp:386
constexpr auto assign_rank_to
Assign a rank to an alphabet object.
Definition: alphabet/concept.hpp:293