deferred_crtp_base.hpp

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// -----------------------------------------------------------------------------------------------------
// Copyright (c) 2006-2020, Knut Reinert & Freie Universität Berlin
// Copyright (c) 2016-2020, 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/core/platform.hpp>
 
namespace seqan3::detail
{
 
template <template <typename ...> typename crtp_base, typename ...args_t>
struct deferred_crtp_base
{
    template <typename derived_t>
    using invoke = crtp_base<derived_t, args_t...>;
};
 
template <template <typename, auto ...> typename crtp_base, auto ...args>
struct deferred_crtp_base_vargs
{
    template <typename derived_t>
    using invoke = crtp_base<derived_t, args...>;
};
 
template <typename deferred_crtp_base_t, typename derived_t>
    requires requires { typename deferred_crtp_base_t::template invoke<derived_t>; }
using invoke_deferred_crtp_base = typename deferred_crtp_base_t::template invoke<derived_t>;
 
} // namespace seqan3::detail