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Canvas/C++ bindings: automatically detect dynamic type of polymorphic exposed classes

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This commit is contained in:
Thomas Geymayer
2012-11-15 21:17:33 +01:00
parent e872f9e928
commit 392ba18ff7
2 changed files with 124 additions and 3 deletions
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45
simgear/nasal/cppbind/cppbind_test.cxx
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@@ -1,19 +1,22 @@
#include "Ghost.hxx"
#include "NasalHash.hxx"
#include <boost/shared_ptr.hpp>
#include <cstring>
#include <iostream>
#define VERIFY(a) \
if( !(a) ) \
{ \
std::cerr << "failed:" << #a << std::endl; \
std::cerr << "failed: line " << __LINE__ << ": " << #a << std::endl; \
return 1; \
}
struct Base
{
naRef member(naContext, int, naRef*) { return naNil(); }
virtual ~Base(){};
};
struct Derived:
public Base
@@ -22,6 +25,16 @@ struct Derived:
int getX() const { return _x; }
void setX(int x) { _x = x; }
};
struct DoubleDerived:
public Derived
{
};
struct DoubleDerived2:
public Derived
{
};
naRef member(Derived&, naContext, int, naRef*) { return naNil(); }
@@ -83,6 +96,36 @@ int main(int argc, char* argv[])
naRef derived = Ghost<Derived>::create(c);
VERIFY( naIsGhost(derived) );
VERIFY( std::string("Derived") == naGhost_type(derived)->name );
typedef boost::shared_ptr<Base> BasePtr;
typedef boost::shared_ptr<Derived> DerivedPtr;
typedef boost::shared_ptr<DoubleDerived> DoubleDerivedPtr;
typedef boost::shared_ptr<DoubleDerived2> DoubleDerived2Ptr;
Ghost<BasePtr>::init("BasePtr");
Ghost<DerivedPtr>::init("DerivedPtr")
.bases<BasePtr>();
Ghost<DoubleDerivedPtr>::init("DoubleDerivedPtr")
.bases<DerivedPtr>();
Ghost<DoubleDerived2Ptr>::init("DoubleDerived2Ptr")
.bases<DerivedPtr>();
BasePtr d( new Derived );
derived = Ghost<BasePtr>::create(c, d);
VERIFY( naIsGhost(derived) );
VERIFY( std::string("DerivedPtr") == naGhost_type(derived)->name );
BasePtr d2( new DoubleDerived );
derived = Ghost<BasePtr>::create(c, d2);
VERIFY( naIsGhost(derived) );
VERIFY( std::string("DoubleDerivedPtr") == naGhost_type(derived)->name );
BasePtr d3( new DoubleDerived2 );
derived = Ghost<BasePtr>::create(c, d3);
VERIFY( naIsGhost(derived) );
VERIFY( std::string("DoubleDerived2Ptr") == naGhost_type(derived)->name );
// TODO actuall do something with the ghosts...
naFreeContext(c);