boost/stl_interfaces/config.hpp
// Copyright (C) 2020 T. Zachary Laine // // Distributed under the Boost Software License, Version 1.0. (See // accompanying file LICENSE_1_0.txt or copy at // http://www.boost.org/LICENSE_1_0.txt) #ifndef BOOST_STL_INTERFACES_CONFIG_HPP #define BOOST_STL_INTERFACES_CONFIG_HPP // Included for definition of __cpp_lib_concepts. #include <iterator> #if defined(__cpp_lib_concepts) && defined(__cpp_lib_ranges) && \ !defined(BOOST_STL_INTERFACES_DISABLE_CONCEPTS) #define BOOST_STL_INTERFACES_USE_CONCEPTS 1 #else #define BOOST_STL_INTERFACES_USE_CONCEPTS 0 #endif #if defined(__cpp_explicit_this_parameter) && \ BOOST_STL_INTERFACES_USE_CONCEPTS && \ !defined(BOOST_STL_INTERFACES_DISABLE_DEDUCED_THIS) #define BOOST_STL_INTERFACES_USE_DEDUCED_THIS 1 #else #define BOOST_STL_INTERFACES_USE_DEDUCED_THIS 0 #endif // The inline namespaces v1, v2, and v3 represent C++14, C++20, and C++23 and // later, respectively. v1 is inline for standards before C++20, and v2 is // inline for C++20 and later. Note that this only applies to code for which // multiple vI namespace alternatives exist. For example, some instances of // the v1 namespace may still be inline, if there is no v2 version of its // contents. #if !BOOST_STL_INTERFACES_USE_CONCEPTS && !BOOST_STL_INTERFACES_USE_DEDUCED_THIS # define BOOST_STL_INTERFACES_NAMESPACE_V1 inline namespace v1 # define BOOST_STL_INTERFACES_NAMESPACE_V2 namespace v2 # define BOOST_STL_INTERFACES_NAMESPACE_V3 namespace v3 #elif BOOST_STL_INTERFACES_USE_CONCEPTS && !BOOST_STL_INTERFACES_USE_DEDUCED_THIS # define BOOST_STL_INTERFACES_NAMESPACE_V1 namespace v1 # define BOOST_STL_INTERFACES_NAMESPACE_V2 inline namespace v2 # define BOOST_STL_INTERFACES_NAMESPACE_V3 namespace v3 #else # define BOOST_STL_INTERFACES_NAMESPACE_V1 namespace v1 # define BOOST_STL_INTERFACES_NAMESPACE_V2 namespace v2 # define BOOST_STL_INTERFACES_NAMESPACE_V3 inline namespace v3 #endif #endif