Ref.h

/*
 * $Id$
 * Copyright (c) 2006 - IRIT-UPS <casse@irit.fr>
 *
 * Ref class interface.
 */
#ifndef ELM_UTIL_REF_H
#define ELM_UTIL_REF_H
 
#include <elm/io.h>
 
namespace elm {
 
using namespace io;
 
// Ref class
template <class T>
class Ref {
    T *ptr;
public:
    inline Ref(T *_ptr): ptr(_ptr) { }
    inline Ref(const Ref<T>& ref): ptr(ref.ptr) { }
    inline operator T& (void) const { return *ptr; }
    inline T *operator&(void) const { return ptr; }
    inline T& operator*(void) const { return *ptr; }
    inline T *operator->(void) const { return ptr; }
    inline Ref<T>& operator=(T *_ptr)
        { ptr = _ptr; return *this; }
    inline Ref<T>& operator=(const Ref<T>& ref)
        { ptr = ref.ptr; return *this; }
    inline Ref<T>& operator=(const T& val)
        { *ptr = val; return *this; }
};
 
// Display
template <class T>
inline Output& operator<<(Output& out, const Ref<T>& ref) {
    out << *ref;
    return out;
}
 
} // elm
 
#endif // ELM_UTIL_REF_H