Hi everybody, I'll try to describe my problem:
I have this c++ class (simplyfied):
-------------------------------------------------------------------------------------------
class MyClass
{
public:
MyClass()
{
this->setPos(0, 0);
}
MyClass(const MyClass& orig)
{
this->setPos(orig.pos);
}
void setPos(int x, int y)
{
this->pos.clear();
this->pos.push_back(x);
this->pos.push_back(y);
}
void setPos(const std::vector<int>& p)
{
this->pos = p;
}
const std::vector<int>& getPos() const
{
return this->pos;
}
private:
std::vector<int> pos;
};
-------------------------------------------------------------------------------------------
And then, it's wrapped like this:
-------------------------------------------------------------------------------------------
typedef void (MyClass::*setPos_with_int)(int x, int y);
typedef void (MyClass::*setPos_with_vect)(const std::vector<int>& pos);
void export_jugada()
{
class_<MyClass>("MyClass")
.def("setPos", setPosicion_with_int(&MyClass::setPos) )
.def("setPos", setPosicion_with_vect(&MyClass::setPos) )
.def("getPosicion", &MyClass::getPosicion,
return_value_policy<reference_existing_object>())
;
}
-------------------------------------------------------------------------------------------
Now, I have a little script that does something like:
-------------------------------------------------------------------------------------------
...
def get()
m = MyClass()
m.setPos(4, 9)
return m
...
-------------------------------------------------------------------------------------------
I have debugged (as much as my knowledge lets me!!!) to this point and
everything seem fine. "get()" gets properly called, and when it calls
MyClass::setPos(int, int), it seems to do everything fine (filling up
the vector). Well, now, in the main program, after reading the script,
I do something like this:
-------------------------------------------------------------------------------------------
...extracting get() from script...
MyClass m ( getObj() );
-------------------------------------------------------------------------------------------
The problem here is that m ends up having pos = {4, 0}. The second
element from the vector is ALWAYS == 0. While debugging I discovered
that when the returned object is being copied (via copy constructor),
the "pos" member of the origin (the object that came from python) has,
well, it's second element == 0. The same happens if I do something
like:
-------------------------------------------------------------------------------------------
...extracting get() from script...
MyClass m = getObj() ;
-------------------------------------------------------------------------------------------
Please, help me find my mistakes, I've already spent hours trying to
solve this :(
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