X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=flower%2Finclude%2Fvirtual-methods.hh;h=dc91d7b6696f41cccee3e5832e888c71c991ef87;hb=47db9a3883d726ca53e2133a3b2298f78dd6a32e;hp=a5c80e1281ac9be7882767871d36f519f433dc25;hpb=615a9212789c2cb2994748c023d0e19f3a83a0fd;p=lilypond.git diff --git a/flower/include/virtual-methods.hh b/flower/include/virtual-methods.hh index a5c80e1281..dc91d7b669 100644 --- a/flower/include/virtual-methods.hh +++ b/flower/include/virtual-methods.hh @@ -1,33 +1,48 @@ /* - virtual-methods.hh -- declare macros for our do-it-yourself RTTI + This file is part of LilyPond, the GNU music typesetter. - source file of the Flower Library + Copyright (C) 1997--2015 Han-Wen Nienhuys - (c) 1997--1998 Han-Wen Nienhuys -*/ + LilyPond is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + LilyPond is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + You should have received a copy of the GNU General Public License + along with LilyPond. If not, see . +*/ #ifndef VIRTUAL_METHODS_HH #define VIRTUAL_METHODS_HH #include -#include "stdlib.h" // size_t +using namespace std; -#define classname(class_ptr) demangle_classname(typeid(*(class_ptr)).name()) - -const char * -demangle_classname (const char*); +/* +Virtual copy constructor. Make up for C++'s lack of a standard +factory or clone () function. Usage: -/** +class Foo : Baseclass +{ +VIRTUAL_COPY_CONSTRUCTOR (Baseclass, Foo); +}; +*/ - Virtual copy constructor. Make up for C++'s lack of a standard - clone() function. Uses a typeof hack. Usage: +#define DECLARE_CLASSNAME(name) \ + virtual const char *class_name () const { \ + return #name; \ +} - class Foo : Baseclass { - VIRTUAL_COPY_CONS(Baseclass); - }; - - */ -#define VIRTUAL_COPY_CONS(base) virtual base *clone () const { return new typeof(*this) (*this); } +#define VIRTUAL_COPY_CONSTRUCTOR(Base, name) \ + DECLARE_CLASSNAME(name);\ + virtual Base *clone () const \ + { \ + return new name (*this); \ + } -#endif +#endif /* VIRTUAL_METHODS_HH */