1 /* ScummVM - Graphic Adventure Engine 2 * 3 * ScummVM is the legal property of its developers, whose names 4 * are too numerous to list here. Please refer to the COPYRIGHT 5 * file distributed with this source distribution. 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 2 10 * of the License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 20 * 21 */ 22 23 #ifndef AGS_STD_FUNCTIONAL_H 24 #define AGS_STD_FUNCTIONAL_H 25 26 namespace AGS3 { 27 namespace std { 28 29 template <class _Arg, class _Result> 30 struct unary_function { // base class for unary functions 31 using argument_type = _Arg; 32 using result_type = _Result; 33 }; 34 35 template <class _Arg1, class _Arg2, class _Result> 36 struct binary_function { // base class for binary functions 37 using first_argument_type = _Arg1; 38 using second_argument_type = _Arg2; 39 using result_type = _Result; 40 }; 41 42 template <typename _Fty> 43 struct function { 44 _Fty *_fn; 45 functionfunction46 function() : _fn(nullptr) {} functionfunction47 function(_Fty *fn) : _fn(fn) {} 48 49 operator _Fty &() { 50 return *_fn; 51 } 52 }; 53 54 } // namespace std 55 } // namespace AGS3 56 57 #endif 58