on_result.hpp

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// -----------------------------------------------------------------------------------------------------
// 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 <type_traits>
 
 
#include <seqan3/core/configuration/pipeable_config_element.hpp>
#include <seqan3/core/semiregular_box.hpp>
#include <seqan3/search/configuration/detail.hpp>
 
namespace seqan3::search_cfg
{
 
template <std::move_constructible callback_t>
class on_result : private seqan3::pipeable_config_element
{
public:
    seqan3::semiregular_box_t<callback_t> callback{}; // Allow lambdas with capture block which are not copy_assignable.
 
    constexpr on_result() = default; 
    constexpr on_result(on_result const &) = default; 
    constexpr on_result(on_result &&) = default; 
    constexpr on_result & operator=(on_result const &) = default; 
    constexpr on_result & operator=(on_result &&) = default; 
    ~on_result() = default; 
 
    constexpr explicit on_result(callback_t callback) : callback{std::forward<callback_t>(callback)}
    {}
 
    static constexpr seqan3::detail::search_config_id id{seqan3::detail::search_config_id::on_result};
};
 
template <std::move_constructible callback_t>
on_result(callback_t &&) -> on_result<std::decay_t<callback_t>>;
}  // namespace seqan3::search_cfg