mask.hpp

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// -----------------------------------------------------------------------------------------------------
// Copyright (c) 2006-2019, Knut Reinert & Freie Universität Berlin
// Copyright (c) 2016-2019, 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 <cassert>
#include <seqan3/alphabet/alphabet_base.hpp>

namespace seqan3
{
class mask : public alphabet_base<mask, 2, void>
{
private:
    using base_t = alphabet_base<mask, 2, void>;

    friend base_t;

public:
    constexpr mask() : base_t{} {}                      
    constexpr mask(mask const &) = default;             
    constexpr mask(mask &&) = default;                  
    constexpr mask & operator=(mask const &) = default; 
    constexpr mask & operator=(mask &&) = default;      
    ~mask() = default;                                  

    static const mask UNMASKED;
    static const mask MASKED;
};

mask constexpr mask::UNMASKED{mask{}.assign_rank(0)};
mask constexpr mask::MASKED  {mask{}.assign_rank(1)};
} // namespace seqan3