variant_helper.h

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/* Diagnostic Client library
 * Copyright (C) 2024  Avijit Dey
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#ifndef DIAG_CLIENT_LIB_LIB_PLATFORM_CORE_VARIANT_HELPER_H_
#define DIAG_CLIENT_LIB_LIB_PLATFORM_CORE_VARIANT_HELPER_H_
 
namespace core_type {
namespace visit {
 
// helper type for the visitor pattern in std::visit
template<class... Ts>
struct overloaded : Ts... {
  using Ts::operator()...;
};
 
// explicit deduction guide (not needed as of C++20)
template<class... Ts>
overloaded(Ts...) -> overloaded<Ts...>;
 
}  // namespace visit
}  // namespace core_type
 
#endif  // DIAG_CLIENT_LIB_LIB_PLATFORM_CORE_VARIANT_HELPER_H_