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#include <qpdf/PointerHolder.hh>
#include <iostream>
#include <stdlib.h>
#include <list>
#include <qpdf/QUtil.hh>
class Object
{
public:
Object();
~Object();
void hello();
private:
static int next_id;
int id;
};
int Object::next_id = 0;
Object::Object()
{
this->id = ++next_id;
std::cout << "created Object, id " << this->id << std::endl;
}
Object::~Object()
{
std::cout << "destroyed Object, id " << this->id << std::endl;
}
void
Object::hello()
{
std::cout << "calling Object::hello for " << this->id << std::endl;
}
typedef PointerHolder<Object> ObjectHolder;
int main(int argc, char* argv[])
{
std::list<ObjectHolder> ol1;
ObjectHolder oh0;
{
std::cout << "hello" << std::endl;
Object* o1 = new Object;
ObjectHolder oh1(o1);
ObjectHolder oh2(oh1);
ObjectHolder oh3(new Object);
ObjectHolder oh4;
ObjectHolder oh5;
if (oh4 == oh5)
{
std::cout << "nulls equal" << std::endl;
}
oh3 = oh1;
oh4 = oh2;
if (oh3 == oh4)
{
std::cout << "equal okay" << std::endl;
}
if ((! (oh3 < oh4)) && (! (oh4 < oh3)))
{
std::cout << "less than okay" << std::endl;
}
ol1.push_back(oh3);
ol1.push_back(oh3);
Object* o3 = new Object;
oh0 = o3;
}
ol1.front().getPointer()->hello();
ol1.pop_front();
std::cout << "goodbye" << std::endl;
return 0;
}
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