TYPEMAP
uint64_t							T_UV
std::string							T_STD_STRING
rocksdb::SequenceNumber				T_UV
rocksdb::Slice						T_ROCKSDB_SLICE
RocksDB::DB*						T_OBJECT
RocksDB::Comparator *				T_OBJECT
RocksDB::CompactionFilter *		    T_OBJECT
RocksDB::TransactionLogIterator *	T_OBJECT
RocksDB::Cache *					T_OBJECT
RocksDB::BatchResult *				T_OBJECT
RocksDB::MergeOperator *			T_OBJECT
RocksDB::Statistics*				T_OBJECT
RocksDB::WriteBatchHandler*			T_OBJECT
RocksDB::SliceTransform *			T_OBJECT
RocksDB::FilterPolicy *				T_OBJECT
rocksdb::WriteBatch *				T_OBJECT
rocksdb::LDBTool *					T_OBJECT
rocksdb::Iterator *					T_ROCKSDB_OBJECT
rocksdb::Snapshot *					T_ROCKSDB_OBJECT
const rocksdb::Snapshot *			T_ROCKSDB_OBJECT

OUTPUT

T_STD_STRING
	$arg = newSVpvn($var.data(), $var.size());

T_ROCKSDB_SLICE
	$arg = newSVpvn($var.data(), $var.size());

T_OBJECT
	if ($var == NULL) {
		SvOK_off($arg);
	} else {
		HV *self = newHV();
		sv_setsv($arg, sv_2mortal(newRV_noinc((SV*) self)));
		sv_bless($arg, gv_stashpv(CLASS, 1));
		MAGIC *mg = sv_magicext((SV*) self, NULL, PERL_MAGIC_ext, NULL, NULL, 0);
		mg->mg_obj = (SV*) $var;
		mg->mg_private = TYPE_${(my $t = uc $subtype) =~ s/^.* //; $t =~ s/::/_/g; \$t};
	}

T_ROCKSDB_OBJECT
	if ($var == NULL) {
		SvOK_off($arg);
	} else {
		HV *self = newHV();
		sv_setsv($arg, sv_2mortal(newRV_noinc((SV*) self)));
		sv_bless($arg, gv_stashpv(CLASS, 1));
		MAGIC *mg = sv_magicext(SvRV($arg), NULL, PERL_MAGIC_ext, NULL, (char*) SvRV(SELF), HEf_SVKEY);
		mg->mg_obj = (SV*) $var;
		mg->mg_private = TYPE_${(my $t = uc $subtype) =~ s/^.* //; $t =~ s/::/_/g; \$t};
	}

INPUT

T_ROCKSDB_SLICE
	SV2SLICE($arg, $var);

T_OBJECT
	${$argoff == 0 ? \'SV* SELF = ST(0);' : \''}
	if (sv_isobject($arg) && sv_derived_from($arg, \"${(my $t = $subtype) =~ s/^(.* )?rocksdb/RocksDB/; $t =~ s/::DB$//; \$t}\")) {
		MAGIC* magic = mg_find(SvRV($arg), PERL_MAGIC_ext);
		if (magic != NULL && magic->mg_private == TYPE_${(my $t = uc $subtype) =~ s/^.* //; $t =~ s/::/_/g; \$t} && magic->mg_obj != NULL) {
			$var = ($type) magic->mg_obj;
		} else {
			Perl_croak(aTHX_ \"$var: invalid object\");
		}
	} else {
		Perl_croak(aTHX_ \"%s: %s is not of type %s\",
			${$ALIAS?\q[GvNAME(CvGV(cv))]:\qq[\"$pname\"]},
			\"$var\", \"${(my $t = $subtype) =~ s/^(.* )?rocksdb/RocksDB/i; $t =~ s/::DB$//; \$t}\");
	}

T_ROCKSDB_OBJECT
	${$argoff == 0 ? \'SV* SELF = ST(0);' : \''}
	if (sv_isobject($arg) && sv_derived_from($arg, \"${(my $t = $subtype) =~ s/^(.* )?rocksdb/RocksDB/; $t =~ s/::DB$//; \$t}\")) {
		MAGIC* magic = mg_find(SvRV($arg), PERL_MAGIC_ext);
		if (magic != NULL && magic->mg_private == TYPE_${(my $t = uc $subtype) =~ s/^.* //; $t =~ s/::/_/g; \$t} && magic->mg_obj != NULL) {
			$var = ($type) magic->mg_obj;
		} else {
			Perl_croak(aTHX_ \"$var: invalid object\");
		}
	} else {
		Perl_croak(aTHX_ \"%s: %s is not of type %s\",
			${$ALIAS?\q[GvNAME(CvGV(cv))]:\qq[\"$pname\"]},
			\"$var\", \"${(my $t = $subtype) =~ s/^(.* )?rocksdb/RocksDB/i; $t =~ s/::DB$//; \$t}\");
	}