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// file : examples/cxx/serializer/polymorphism/supermen.hxx
// copyright : not copyrighted - public domain
#ifndef SUPERMEN_HXX
#define SUPERMEN_HXX
#include <string>
#include <vector>
// Custom type id. We could also use standard C++ typeid/type_info
// if it is available.
//
enum type_id
{
person_type,
superman_type,
batman_type
};
//
//
struct person
{
virtual
~person ()
{
}
person (const std::string& name)
: name_ (name)
{
}
const std::string&
name () const
{
return name_;
}
void
name (const std::string& n)
{
name_ = n;
}
virtual type_id
type () const
{
return person_type;
}
private:
std::string name_;
};
//
//
struct superman: person
{
superman (const std::string& name, bool can_fly)
: person (name), can_fly_ (can_fly)
{
}
bool
can_fly () const
{
return can_fly_;
}
void
can_fly (bool cf)
{
can_fly_ = cf;
}
virtual type_id
type () const
{
return superman_type;
}
private:
bool can_fly_;
};
struct batman: superman
{
batman (const std::string& name, unsigned int wing_span)
: superman (name, true), wing_span_ (wing_span)
{
}
unsigned int
wing_span () const
{
return wing_span_;
}
void
wing_span (unsigned int ws)
{
wing_span_ = ws;
}
virtual type_id
type () const
{
return batman_type;
}
private:
unsigned int wing_span_;
};
// Poor man's polymorphic sequence which also assumes ownership of the
// elements.
//
struct supermen: std::vector<person*>
{
~supermen ()
{
for (iterator i = begin (); i != end (); ++i)
delete *i;
}
};
#endif // SUPERMEN_HXX
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