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%module cpp11_shared_ptr_template_upcast
%{
#include <memory>
#include <string>
%}
%include <std_shared_ptr.i>
%include <std_string.i>
%{
class Base {
public:
Base() : value(0) {}
Base(int v) : value(v) {}
virtual ~Base() {}
virtual int GetResult() = 0;
int value;
};
class Derived : public Base {
public:
Derived() : Base() {}
Derived(int v) : Base(v) {}
virtual ~Derived() {}
int GetResult() { return value*2; }
};
template <class T> class Printable : virtual public T {
public:
Printable(int param) : T(param) {}
~Printable() {}
std::string GetFormatted() { return std::string("The formatted result is: ").append(std::to_string(this->GetResult())); }
};
std::shared_ptr<Printable<Derived> > MakePrintableDerived(int param) {
return std::make_shared<Printable<Derived> >(param);
}
%}
%shared_ptr(Base);
%shared_ptr(Derived);
%shared_ptr(Printable<Derived>)
class Base {
public:
Base();
Base(int v);
virtual ~Base();
virtual int GetResult() = 0;
int value;
};
class Derived : public Base {
public:
Derived();
Derived(int v);
virtual ~Derived();
int GetResult();
};
/*
Virtual inheritance is contrived for this case, but exposes whether SWIGSmartPtrUpcast generated a correctly typed shared pointer of the upcasted class type -
if the pointer type is incorrect, this will result in a segmentation fault (on Windows, this could manifest as undefined behavior) when trying to access members
inherited from T through a shared_ptr<Printable<T> >.
*/
template <class T> class Printable : virtual public T {
public:
Printable(int param);
~Printable();
std::string GetFormatted();
};
std::shared_ptr<Printable<Derived> > MakePrintableDerived(int param);
%template(PrintableDerived) Printable<Derived>;
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