Common.hpp

/*
 * Copyright (c) 2022-2023, Soliton Systems K.K. All rights reserved.
 * Use in source and binary forms, with or without modification, 
 * is permitted provided that the following a condition is met:
 *
 * Use is permitted only in accordance with the terms and 
 * conditions set forth in the Software License Agreement available 
 * at https://zao-sdk.org/license-agreement/.
 */
#ifndef ZEP_COMMON_HPP_
#define ZEP_COMMON_HPP_
 
#if __cplusplus < 201402L
#error "ZEP library requires C++14 or newer"
#elif __cplusplus < 201703L
 
// C++14
 
#if defined(__GNUC__) && (__GNUC__ >= 4)
#define ZEP_NODISCARD __attribute__((warn_unused_result))
#elif defined(_MSC_VER) && (_MSC_VER >= 1700)
#define ZEP_NODISCARD _Check_return_
#else
#define ZEP_NODISCARD
#endif
 
#else
 
// C++17 or higher
 
#define ZEP_NODISCARD [[nodiscard]]
 
#endif
 
#endif  // ZEP_COMMON_HPP_