TYPEMAP
B::OP		T_OP_OBJ
B::UNOP		T_OP_OBJ
B::BINOP	T_OP_OBJ
B::LOGOP	T_OP_OBJ
B::LISTOP	T_OP_OBJ
B::PMOP		T_OP_OBJ
B::SVOP		T_OP_OBJ
B::PADOP	T_OP_OBJ
B::PVOP		T_OP_OBJ
B::LOOP		T_OP_OBJ
B::COP		T_OP_OBJ

INPUT
T_OP_OBJ
	if (SvROK($arg)) {
	    IV tmp = SvIV((SV*)SvRV($arg));
	    $var = INT2PTR($type,tmp);
	}
	else
	    croak(\"$var is not a reference\")