/*
- 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 <hanwen@xs4all.nl>
- (c) 1997--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-*/
+ 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 <http://www.gnu.org/licenses/>.
+*/
#ifndef VIRTUAL_METHODS_HH
#define VIRTUAL_METHODS_HH
-#include "stdlib.h" // size_t
-
-/** Declare the classes name as a static and virtual function.
- The static_name() can *not* be inlined (this might have the effect that
- s->name() != S::static_name (). Overlapping strings need not be merged in C++
- */
-#define DECLARE_MY_RUNTIME_TYPEINFO \
-static bool static_is_type_b (const char*s);\
-virtual bool is_type_b (const char *s) const { return static_is_type_b (s); } \
-virtual char const *name() const{ return static_name (); } \
-virtual size_t class_size () const { return static_class_size (); }\
-static size_t static_class_size (); \
-static char const *static_name()
-
-#define IMPLEMENT_STATIC_NAME(c)\
- char const *c::static_name() { return #c; } \
- size_t c::static_class_size () { return sizeof (c); }
-
-
+#include <typeinfo>
+using namespace std;
-#define VIRTUAL_COPY_CONS(T, R)\
- virtual R *clone() const { return new T(*this); } \
- int yet_another_stupid_function_to_allow_semicolon()
-
-
-#define DECLARE_VIRTUAL_COPY_CONS(T, R)\
- virtual R *clone() const
-#define IMPLEMENT_VIRTUAL_COPY_CONS(T, R)\
- R *T::clone() const { return new T(*this); }\
+/*
+Virtual copy constructor. Make up for C++'s lack of a standard
+factory or clone () function. Usage:
-
-#define IMPLEMENT_IS_TYPE_B(D)\
- IMPLEMENT_STATIC_NAME(D)\
- bool D::static_is_type_b (const char *s)\
-{\
- return s == static_name();\
-}
+class Foo : Baseclass
+{
+VIRTUAL_COPY_CONSTRUCTOR (Baseclass, Foo);
+};
+*/
-#define IMPLEMENT_IS_TYPE_B1(D, B)\
- IMPLEMENT_STATIC_NAME(D)\
- bool D::static_is_type_b (const char *s)\
-{\
- return s == static_name() || B::static_is_type_b (s);\
+#define DECLARE_CLASSNAME(name) \
+ virtual const char *class_name () const { \
+ return #name; \
}
-#define IMPLEMENT_IS_TYPE_B2(D, BA, BB)\
- IMPLEMENT_STATIC_NAME(D)\
- bool D::static_is_type_b (const char *s)\
-{\
- return s == static_name() || BA::static_is_type_b (s) || BB::static_is_type_b (s);\
-}
+#define VIRTUAL_COPY_CONSTRUCTOR(Base, name) \
+ DECLARE_CLASSNAME(name);\
+ virtual Base *clone () const \
+ { \
+ return new name (*this); \
+ }
-#endif
+#endif /* VIRTUAL_METHODS_HH */