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Added tins_cast as a replacement for dynamic_cast when using it on PDU classes.

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This commit is contained in:
Matias Fontanini
2013-10-18 09:28:43 -03:00
parent 87fdd62b57
commit a507355e27
9 changed files with 59 additions and 9 deletions
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28
include/pdu.h
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@@ -456,6 +456,34 @@ namespace Tins {
*lop /= rop;
return lop;
}
namespace Internals {
template<typename T>
struct remove_pointer {
typedef T type;
};
template<typename T>
struct remove_pointer<T*> {
typedef T type;
};
}
template<typename T, typename U>
T tins_cast(U *pdu) {
typedef typename Internals::remove_pointer<T>::type TrueT;
return pdu && (TrueT::pdu_flag == pdu->pdu_type()) ?
static_cast<T>(pdu) :
0;
}
template<typename T, typename U>
T &tins_cast(U &pdu) {
T *ptr = tins_cast<T*>(&pdu);
if(!ptr)
throw bad_tins_cast();
return *ptr;
}
}
#endif // TINS_PDU_H