.uppdev

git-svn-id: svn://ultimatepp.org/upp/trunk@2790 f0d560ea-af0d-0410-9eb7-867de7ffcac7

uppdev/Kpoly/Kpoly.cpp

@@ -0,0 +1,86 @@
+#include <Core/Core.h>
+
+using namespace Upp;
+
+//without this one beeing in namespace upp it doesnt work eaither
+//suppose because of friend DeepCopyNew not beeing placed / referenced to template definition
+NAMESPACE_UPP
+
+template<class T, class B = EmptyClass>
+class Copyable : public B
+{
+public:
+	virtual ~Copyable() {}
+	virtual T* Copy() const                    { return PartialCopy(); }
+	virtual T* PartialCopy() const             = 0; //{ NEVER(); return NULL; }
+};
+
+template<class C, class B = EmptyClass>
+class CopyableC : public Copyable<CopyableC<C,B>, B>
+{
+public:
+	virtual const C& GetC() const              = 0;
+	virtual C& GetC()                          = 0;
+	
+	operator const C&() const                  { return GetC(); }
+	operator C&()                              { return GetC(); }
+};
+
+template<class B, class C, class CB = EmptyClass>
+class PolyCopyableC : public B, public PolyDeepCopyNew<CopyableC<C, CB>, CopyableC<C, CB> >
+{
+public:
+	virtual const C& GetC() const              { return *this; }
+	virtual C& GetC()                          { return *this; }
+};
+
+END_UPP_NAMESPACE
+
+//OWN CLASSES
+
+//this one doesnt help
+//NAMESPACE_UPP
+
+//a common base interface, that should be available after copying, (i.e Offer() )
+//is meant as an extension interface on very bottom
+//should be implemented at very top
+class CBase 
+{
+public:
+	virtual void Offer(int a) = 0;
+};
+
+//a common base class, which should be accessible via GetC (could be i.e Ctrl)
+class Base {};
+
+//a Base version (could be any Ctrl derive, i.e StaticText)
+//neither Base nor Derived are to be changed, they are foreign
+//thats why so complicated
+class Derived : public Base {};
+
+//extension of the whole thing, to make everything cloneable..
+class Master : public PolyCopyableC<Derived, Base, CBase>
+{
+public:
+	Master* PartialCopy() const { return new Master(); }
+	virtual void Offer(int a) {}
+};
+
+//END_UPP_NAMESPACE
+
+//with this one both work, but i'd like to avoid that and to have it automatic in PolyCopyableC
+#if 0
+NAMESPACE_UPP
+template<>
+inline CopyableC<Base, CBase>* DeepCopyNew(const CopyableC<Base, CBase>& x) {
+	return x.Copy();
+}
+END_UPP_NAMESPACE
+#endif
+
+CONSOLE_APP_MAIN
+{
+	Array<CopyableC<Base, CBase> > a1, a2;
+	a1.Add(new Master());
+	a1 <<= a2;	
+}

uppdev/Kpoly/Kpoly.upp

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+uses
+	Core;
+
+file
+	Kpoly.cpp;
+
+mainconfig
+	"" = "";
+

uppdev/Kpoly/init

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+#ifndef _Kpoly_icpp_init_stub
+#define _Kpoly_icpp_init_stub
+#include "Core/init"
+#endif