1 /* Copyright 2017-2021 PaGMO development team 2 3 This file is part of the PaGMO library. 4 5 The PaGMO library is free software; you can redistribute it and/or modify 6 it under the terms of either: 7 8 * the GNU Lesser General Public License as published by the Free 9 Software Foundation; either version 3 of the License, or (at your 10 option) any later version. 11 12 or 13 14 * the GNU General Public License as published by the Free Software 15 Foundation; either version 3 of the License, or (at your option) any 16 later version. 17 18 or both in parallel, as here. 19 20 The PaGMO library is distributed in the hope that it will be useful, but 21 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 22 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 23 for more details. 24 25 You should have received copies of the GNU General Public License and the 26 GNU Lesser General Public License along with the PaGMO library. If not, 27 see https://www.gnu.org/licenses/. */ 28 29 #ifndef PAGMO_DETAIL_TYPE_NAME_HPP 30 #define PAGMO_DETAIL_TYPE_NAME_HPP 31 32 #include <string> 33 #include <type_traits> 34 #include <typeinfo> 35 36 #include <pagmo/detail/visibility.hpp> 37 38 namespace pagmo 39 { 40 41 namespace detail 42 { 43 44 PAGMO_DLL_PUBLIC std::string demangle_from_typeid(const char *); 45 46 // Determine the name of the type T at runtime. 47 template <typename T> type_name()48inline std::string type_name() 49 { 50 // Get the demangled name without cvref. 51 auto ret 52 = demangle_from_typeid(typeid(typename std::remove_cv<typename std::remove_reference<T>::type>::type).name()); 53 54 // Redecorate it with cv qualifiers. 55 constexpr unsigned flag = unsigned(std::is_const<typename std::remove_reference<T>::type>::value) 56 + (unsigned(std::is_volatile<typename std::remove_reference<T>::type>::value) << 1); 57 switch (flag) { 58 case 0u: 59 // NOTE: handle this explicitly to keep compiler warnings at bay. 60 break; 61 case 1u: 62 ret += " const"; 63 break; 64 case 2u: 65 ret += " volatile"; 66 break; 67 case 3u: 68 ret += " const volatile"; 69 } 70 71 // Re-add the reference, if necessary. 72 if (std::is_lvalue_reference<T>::value) { 73 ret += " &"; 74 } else if (std::is_rvalue_reference<T>::value) { 75 ret += " &&"; 76 } 77 78 return ret; 79 } 80 81 } // namespace detail 82 83 } // namespace pagmo 84 85 #endif 86