hamming_scoring_scheme.hpp

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// SPDX-FileCopyrightText: 2006-2025 Knut Reinert & Freie Universität Berlin
// SPDX-FileCopyrightText: 2016-2025 Knut Reinert & MPI für molekulare Genetik
// SPDX-License-Identifier: BSD-3-Clause
 
#pragma once
 
#include <concepts>
 
#include <seqan3/core/platform.hpp>
 
namespace seqan3
{
 
class hamming_scoring_scheme
{
public:
    using alphabet_type = char;
 
    using score_type = int32_t;
 
    hamming_scoring_scheme() noexcept = default;                                      
    hamming_scoring_scheme(hamming_scoring_scheme const &) = default;                 
    hamming_scoring_scheme(hamming_scoring_scheme &&) noexcept = default;             
    hamming_scoring_scheme & operator=(hamming_scoring_scheme const &) = default;     
    hamming_scoring_scheme & operator=(hamming_scoring_scheme &&) noexcept = default; 
    ~hamming_scoring_scheme() = default;                                              
 
    template <typename alph1_t, typename alph2_t>
        requires std::equality_comparable_with<alph1_t, alph2_t>
    constexpr score_type score(alph1_t const alph1, alph2_t const alph2) const noexcept
    {
        return alph1 == alph2 ? 0 : -1;
    }
 
 
    constexpr bool operator==(hamming_scoring_scheme const &) const noexcept
    {
        return true;
    }
 
    constexpr bool operator!=(hamming_scoring_scheme const &) const noexcept
    {
        return false;
    }
};
 
} // namespace seqan3