T_MP
$var = mp_fromsv($arg, \"$var\", \"${my $ntt = $ntype; $ntt =~ s/^(.*)Ptr$/Catacomb::\U$1/; $ntt =~ s/_/::/g; \$ntt}\", 0, 0)
T_CATSTRUCT
T_MP
$var = mp_fromsv($arg, \"$var\", \"${my $ntt = $ntype; $ntt =~ s/^(.*)Ptr$/Catacomb::\U$1/; $ntt =~ s/_/::/g; \$ntt}\", 0, 0)
T_CATSTRUCT