Построение диаграммы классов по коду

#include <string>
#include <iostream>
 
class File
{
public:
File()
{
std::cout « "File construct was called" « std::endl;
}
File(const std::string& path) : _path(path)
{
std::cout « "File overload construct was called. Path is " « _path « std::endl;
open();
}
virtual ~File()
{
if (_is_open)
close();
std::cout « "File overload construct was called. Path is " « _path « std::endl;
}
 
virtual bool open()
{
if (_is_open)
return true;
 
_is_open = true;
std::cout « "File open was called" « std::endl;
}
 
virtual void close()
{
_is_open = false;
std::cout « "File close was called" « std::endl;
}
 
std::string path() const
{
return _path;
}
 
virtual void read(char& c)
{
if (!_is_open)
return;
 
std::cout « "File read char was called" « std::endl;
}
 
virtual void read(std::string& str)
{
if (!_is_open)
return;
 
std::cout « "File read string was called" « std::endl;
}
 
private:
bool _is_open;
std::string _path;
};
 
struct MyData { int count; };
 
class SpecialFile : public File
{
public:
SpecialFile() : data(new MyData)
{
}
 
SpecialFile(const std::string& path) : File(path), data(new MyData)
{
}
 
~SpecialFile()
{
delete data;
}
 
bool open()
{
bool ok = File::open();
std::cout « "SpecialFile open was called" « std::endl;
 
return ok;
}
 
void close()
{
File::close();
std::cout « "SpecialFile close was called" « std::endl;
}
 
void read(std::string& str)
{
File::read(str);
 
if (str == "special")
data->count += 1;
 
std::cout « "SpecialFile read string was called" « std::endl;
}
 
private:
MyData *data;
};
 
int main()
{
File *p_file = new SpecialFile("task.in");
 
std::string str;
p_file->read(str);
 
return 0;
}