2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1997--2014 Han-Wen Nienhuys <hanwen@xs4all.nl>
6 LilyPond is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 LilyPond is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
20 #ifndef VIRTUAL_METHODS_HH
21 #define VIRTUAL_METHODS_HH
27 Virtual copy constructor. Make up for C++'s lack of a standard
28 factory or clone () function. Usage:
32 VIRTUAL_COPY_CONSTRUCTOR (Baseclass, Foo);
36 #define DECLARE_CLASSNAME(name) \
37 virtual const char *class_name () const { \
41 #define VIRTUAL_COPY_CONSTRUCTOR(Base, name) \
42 DECLARE_CLASSNAME(name);\
43 virtual Base *clone () const \
45 return new name (*this); \
48 #endif /* VIRTUAL_METHODS_HH */