mirror of https://github.com/qpdf/qpdf.git
102 lines
1.9 KiB
C++
102 lines
1.9 KiB
C++
#include <qpdf/PointerHolder.hh>
|
|
|
|
#include <iostream>
|
|
#include <stdlib.h>
|
|
#include <list>
|
|
|
|
#include <qpdf/QUtil.hh>
|
|
|
|
class Object
|
|
{
|
|
public:
|
|
Object();
|
|
~Object();
|
|
void hello();
|
|
void hello() const;
|
|
|
|
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;
|
|
}
|
|
|
|
void
|
|
Object::hello() const
|
|
{
|
|
std::cout << "calling Object::hello const for " << this->id << std::endl;
|
|
}
|
|
|
|
typedef PointerHolder<Object> ObjectHolder;
|
|
|
|
void callHello(ObjectHolder const& oh)
|
|
{
|
|
oh.getPointer()->hello();
|
|
oh->hello();
|
|
(*oh).hello();
|
|
}
|
|
|
|
int main(int argc, char* argv[])
|
|
{
|
|
std::list<ObjectHolder> ol1;
|
|
|
|
ObjectHolder oh0;
|
|
{
|
|
std::cout << "hello" << std::endl;
|
|
Object* o1 = new Object;
|
|
ObjectHolder oh1(o1);
|
|
std::cout << "oh1 refcount = " << oh1.getRefcount() << std::endl;
|
|
ObjectHolder oh2(oh1);
|
|
std::cout << "oh1 refcount = " << oh1.getRefcount() << std::endl;
|
|
std::cout << "oh2 refcount = " << oh2.getRefcount() << std::endl;
|
|
ObjectHolder oh3(new Object);
|
|
ObjectHolder oh4;
|
|
ObjectHolder oh5;
|
|
std::cout << "oh5 refcount = " << oh5.getRefcount() << std::endl;
|
|
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.front()->hello();
|
|
(*ol1.front()).hello();
|
|
callHello(ol1.front());
|
|
ol1.pop_front();
|
|
std::cout << "goodbye" << std::endl;
|
|
return 0;
|
|
}
|