cigar_operation.hpp

Go to the documentation of this file.

// -----------------------------------------------------------------------------------------------------
// Copyright (c) 2006-2021, Knut Reinert & Freie Universität Berlin
// Copyright (c) 2016-2021, 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 <seqan3/alphabet/alphabet_base.hpp>
 
// ------------------------------------------------------------------
// cigar_operation
// ------------------------------------------------------------------
 
namespace seqan3::exposition_only
{
 
class cigar_operation : public alphabet_base<cigar_operation, 9, char>
{
private:
    using base_t = alphabet_base<cigar_operation, 9, char>;
 
    friend base_t;
 
public:
    constexpr cigar_operation() noexcept = default; 
    constexpr cigar_operation(cigar_operation const &) noexcept = default; 
    constexpr cigar_operation(cigar_operation &&) noexcept = default; 
    constexpr cigar_operation & operator=(cigar_operation const &) noexcept = default; 
    constexpr cigar_operation & operator=(cigar_operation &&) noexcept = default; 
    ~cigar_operation() noexcept = default; 
 
 
private:
    static constexpr char_type rank_to_char_table[alphabet_size]
    {
        'M',
        'D',
        'I',
        'S',
        'H',
        'N',
        'P',
        'X',
        '='
    };
 
    static constexpr std::array<rank_type, 256> char_to_rank_table
    {
        [] () constexpr
        {
            std::array<rank_type, 256> ret{};
 
            // reverse mapping for characters
            for (size_t rnk = 0u; rnk < alphabet_size; ++rnk)
            {
                ret[rank_to_char_table[rnk]] = rnk;
            }
 
            return ret;
        }()
    };
 
    static constexpr char_type rank_to_char(rank_type const rank)
    {
        return rank_to_char_table[rank];
    }
 
    static constexpr rank_type char_to_rank(char_type const chr)
    {
        using index_t = std::make_unsigned_t<char_type>;
        return char_to_rank_table[static_cast<index_t>(chr)];
    }
};
 
} // namespace seqan3::exposition_only