*** empty log message ***

[lilypond.git] / flower / include / virtual-methods.hh

diff --git a/flower/include/virtual-methods.hh b/flower/include/virtual-methods.hh
index 03605d4135b171bf1eb82d4c95142931b82ac86f..d466eee89f3c782d624ef8306e8a07223e9478a2 100644 (file)
--- a/flower/include/virtual-methods.hh
+++ b/flower/include/virtual-methods.hh
@@ -3,52 +3,40 @@
 
   source file of the Flower Library
 
-  (c)  1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
 */
 
 
 #ifndef VIRTUAL_METHODS_HH
 #define VIRTUAL_METHODS_HH
 
-#include "stdlib.h"            // size_t
+#include <typeinfo>
 
-#define classname(class_ptr)   demangle_classname(typeid(*(class_ptr)))
+#define classname(class_ptr)   demangle_classname (typeid (* (class_ptr)))
 
 const char *
-demangle_classname (type_info const &);
+demangle_classname (std::type_info const &);
 
-/**
+/* Virtual copy constructor.  Make up for C++'s lack of a standard
+   factory or clone () function.  Uses a typeof hack.  Usage:
 
-   Virtual copy constructor. Make up for C++'s lack of a standard
-   clone() function.  Uses a typeof hack.  Usage:
+   class Foo : Baseclass
+   {
+      VIRTUAL_COPY_CONSTRUCTOR (Baseclass, Foo);
+   }; */
 
-   class Foo : Baseclass {
-       VIRTUAL_COPY_CONS(Baseclass);
-   };
-   
- */
-
-// fix constness: gcc-2.95 is correct in defining
-//    typeof (*this)
-// in a const member function to be const
-
-#if 0
-#define VIRTUAL_COPY_CONS(base) \
-  virtual base *clone () const \
-  { \
-    return new typeof(*this) (*this); \
-  }
-#else
-#define VIRTUAL_COPY_CONS(base) \
+#define VIRTUAL_COPY_CONSTRUCTOR(base, name) \
+  /* Hack to fix constness: gcc >= 2.95 is correct in defining \
+     typeof (*this) in a const member function to be const.  */ \
   virtual base* clone_const_helper () \
     { \
-      return new typeof (*this) (*this); \
+      return new name (*this); \
     } \
-  virtual base* clone () const \
+  virtual base *clone () const \
     { \
-      base* urg = (base*)this; \
+      /* return new name (*this); */ \
+      base *urg = (base*) this; \
       return urg->clone_const_helper (); \
     }
-#endif 
 
 #endif /* VIRTUAL_METHODS_HH */