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#include "duckdb_python/python_objects.hpp"
#include "duckdb/common/types.hpp"
#include "duckdb/common/types/uuid.hpp"
#include "duckdb/common/types/value.hpp"
#include "duckdb/common/types/decimal.hpp"
#include "duckdb/common/types/bit.hpp"
#include "duckdb/common/operator/cast_operators.hpp"
#include "duckdb_python/pyconnection/pyconnection.hpp"
#include "duckdb/common/operator/add.hpp"
#include "duckdb/common/types/bignum.hpp"
#include "duckdb/function/to_interval.hpp"
#include "datetime.h" // Python datetime initialize #1
#include <duckdb/common/types/variant.hpp>
#include <duckdb/function/scalar/variant_utils.hpp>
namespace duckdb {
PyDictionary::PyDictionary(nb::object dict) {
keys = nb::list(dict.attr("keys")());
values = nb::list(dict.attr("values")());
len = nb::len(keys);
this->dict = std::move(dict);
}
PyTimeDelta::PyTimeDelta(nb::handle &obj) {
days = PyTimeDelta::GetDays(obj);
seconds = PyTimeDelta::GetSeconds(obj);
microseconds = PyTimeDelta::GetMicros(obj);
}
interval_t PyTimeDelta::ToInterval() {
interval_t result;
auto micros_interval = Interval::FromMicro(microseconds);
auto days_interval = interval_t {/*months = */ 0,
/*days = */ days,
/*micros = */ 0};
auto seconds_interval = ToSecondsOperator::Operation<int64_t, interval_t>(seconds);
result = AddOperator::Operation<interval_t, interval_t, interval_t>(micros_interval, days_interval);
result = AddOperator::Operation<interval_t, interval_t, interval_t>(result, seconds_interval);
return result;
}
int64_t PyTimeDelta::GetDays(nb::handle &obj) {
// nb::object wrap: nb::int_() of a bare .attr() accessor is an ambiguous overload on MSVC.
return nb::cast<int64_t>(nb::int_(nb::object(obj.attr("days"))));
}
int64_t PyTimeDelta::GetSeconds(nb::handle &obj) {
return nb::cast<int64_t>(nb::int_(nb::object(obj.attr("seconds"))));
}
int64_t PyTimeDelta::GetMicros(nb::handle &obj) {
return nb::cast<int64_t>(nb::int_(nb::object(obj.attr("microseconds"))));
}
PyDecimal::PyDecimal(nb::handle &obj) : obj(obj) {
auto as_tuple = obj.attr("as_tuple")();
nb::object exponent = as_tuple.attr("exponent");
SetExponent(exponent);
auto sign = nb::cast<int8_t>(as_tuple.attr("sign"));
signed_value = sign != 0;
nb::object decimal_digits = as_tuple.attr("digits");
auto width = nb::len(decimal_digits);
digits.reserve(width);
for (auto digit : decimal_digits) {
digits.push_back(nb::cast<uint8_t>(digit));
}
}
bool PyDecimal::TryGetType(LogicalType &type) {
int32_t width = digits.size();
switch (exponent_type) {
case PyDecimalExponentType::EXPONENT_SCALE: {
case PyDecimalExponentType::EXPONENT_POWER: {
auto scale = exponent_value;
if (exponent_type == PyDecimalExponentType::EXPONENT_POWER) {
width += scale;
}
if (scale > width) {
// The value starts with 1 or more zeros, which are optimized out of the 'digits' array
// 0.001; width=1, exponent=-3
width = scale + 1; // DECIMAL(4,3) - add 1 for the non-decimal values
}
if (width > Decimal::MAX_WIDTH_INT128) {
type = LogicalType::DOUBLE;
return true;
}
type = LogicalType::DECIMAL(width, scale);
return true;
}
case PyDecimalExponentType::EXPONENT_INFINITY: {
type = LogicalType::FLOAT;
return true;
}
case PyDecimalExponentType::EXPONENT_NAN: {
type = LogicalType::FLOAT;
return true;
}
default: // LCOV_EXCL_START
throw NotImplementedException("case not implemented for type PyDecimalExponentType");
} // LCOV_EXCL_STOP
}
}
// LCOV_EXCL_START
static void ExponentNotRecognized() {
throw NotImplementedException("Failed to convert decimal.Decimal value, exponent type is unknown");
}
// LCOV_EXCL_STOP
void PyDecimal::SetExponent(nb::handle &exponent) {
if (nb::isinstance<nb::int_>(exponent)) {
this->exponent_value = nb::cast<int32_t>(exponent);
if (this->exponent_value >= 0) {
exponent_type = PyDecimalExponentType::EXPONENT_POWER;
return;
}
exponent_value *= -1;
exponent_type = PyDecimalExponentType::EXPONENT_SCALE;
return;
}
if (nb::isinstance<nb::str>(exponent)) {
string exponent_string = nb::cast<std::string>(nb::str(exponent));
if (exponent_string == "n") {
exponent_type = PyDecimalExponentType::EXPONENT_NAN;
return;
}
if (exponent_string == "F") {
exponent_type = PyDecimalExponentType::EXPONENT_INFINITY;
return;
}
}
// LCOV_EXCL_START
ExponentNotRecognized();
// LCOV_EXCL_STOP
}
static bool WidthFitsInDecimal(int32_t width) {
return width >= 0 && width <= Decimal::MAX_WIDTH_DECIMAL;
}
template <class OP>
Value PyDecimalCastSwitch(PyDecimal &decimal, uint8_t width, uint8_t scale) {
if (width > DecimalWidth<int64_t>::max) {
return OP::template Operation<hugeint_t>(decimal.signed_value, decimal.digits, width, scale);
}
if (width > DecimalWidth<int32_t>::max) {
return OP::template Operation<int64_t>(decimal.signed_value, decimal.digits, width, scale);
}
if (width > DecimalWidth<int16_t>::max) {
return OP::template Operation<int32_t>(decimal.signed_value, decimal.digits, width, scale);
}
return OP::template Operation<int16_t>(decimal.signed_value, decimal.digits, width, scale);
}
// Wont fit in a DECIMAL, fall back to DOUBLE
static Value CastToDouble(nb::handle &obj) {
string converted = nb::cast<std::string>(nb::str(obj));
string_t decimal_string(converted);
double double_val;
bool try_cast = TryCast::Operation<string_t, double>(decimal_string, double_val, true);
(void)try_cast;
D_ASSERT(try_cast);
return Value::DOUBLE(double_val);
}
Value PyDecimal::ToDuckValue() {
int32_t width = digits.size();
if (!WidthFitsInDecimal(width)) {
return CastToDouble(obj);
}
switch (exponent_type) {
case PyDecimalExponentType::EXPONENT_SCALE: {
uint8_t scale = exponent_value;
D_ASSERT(WidthFitsInDecimal(width));
if (scale > width) {
// Values like '0.001'
width = scale + 1; // leave 1 room for the non-decimal value
}
if (!WidthFitsInDecimal(width)) {
return CastToDouble(obj);
}
return PyDecimalCastSwitch<PyDecimalScaleConverter>(*this, width, scale);
}
case PyDecimalExponentType::EXPONENT_POWER: {
uint8_t scale = exponent_value;
width += scale;
if (!WidthFitsInDecimal(width)) {
return CastToDouble(obj);
}
return PyDecimalCastSwitch<PyDecimalPowerConverter>(*this, width, scale);
}
case PyDecimalExponentType::EXPONENT_NAN: {
return Value::FLOAT(NAN);
}
case PyDecimalExponentType::EXPONENT_INFINITY: {
return Value::FLOAT(INFINITY);
}
// LCOV_EXCL_START
default: {
throw NotImplementedException("case not implemented for type PyDecimalExponentType");
} // LCOV_EXCL_STOP
}
}
PyTime::PyTime(nb::handle &obj) : obj(obj) {
hour = PyTime::GetHours(obj); // NOLINT
minute = PyTime::GetMinutes(obj); // NOLINT
second = PyTime::GetSeconds(obj); // NOLINT
microsecond = PyTime::GetMicros(obj); // NOLINT
timezone_obj = PyTime::GetTZInfo(obj); // NOLINT
}
dtime_t PyTime::ToDuckTime() {
return Time::FromTime(hour, minute, second, microsecond);
}
Value PyTime::ToDuckValue() {
auto duckdb_time = this->ToDuckTime();
if (!nb::none().is(this->timezone_obj)) {
auto seconds = PyTimezone::GetUTCOffsetSeconds(this->timezone_obj);
return Value::TIMETZ(dtime_tz_t(duckdb_time, seconds));
}
return Value::TIME(duckdb_time);
}
int32_t PyTime::GetHours(nb::handle &obj) {
return PyDateTime_TIME_GET_HOUR(obj.ptr()); // NOLINT
}
int32_t PyTime::GetMinutes(nb::handle &obj) {
return PyDateTime_TIME_GET_MINUTE(obj.ptr()); // NOLINT
}
int32_t PyTime::GetSeconds(nb::handle &obj) {
return PyDateTime_TIME_GET_SECOND(obj.ptr()); // NOLINT
}
int32_t PyTime::GetMicros(nb::handle &obj) {
return PyDateTime_TIME_GET_MICROSECOND(obj.ptr()); // NOLINT
}
nb::object PyTime::GetTZInfo(nb::handle &obj) {
// The object returned is borrowed, there is no reference to steal
return nb::borrow<nb::object>(PyDateTime_TIME_GET_TZINFO(obj.ptr())); // NOLINT
}
interval_t PyTimezone::GetUTCOffset(nb::handle &datetime, nb::handle &tzone_obj) {
// The datetime object is provided because the utcoffset could be ambiguous
auto res = tzone_obj.attr("utcoffset")(datetime);
auto timedelta = PyTimeDelta(res);
return timedelta.ToInterval();
}
int32_t PyTimezone::GetUTCOffsetSeconds(nb::handle &tzone_obj) {
// We should be able to use None here, the tzone_obj of a datetime.time should never be ambiguous
auto res = tzone_obj.attr("utcoffset")(nb::none());
auto timedelta = PyTimeDelta(res);
if (timedelta.days != 0) {
throw InvalidInputException(
"Failed to convert 'tzinfo' object, utcoffset returned an invalid timedelta (days)");
}
if (timedelta.microseconds != 0) {
throw InvalidInputException(
"Failed to convert 'tzinfo' object, utcoffset returned an invalid timedelta (microseconds)");
}
return timedelta.seconds;
}
PyDateTime::PyDateTime(nb::handle &obj) : obj(obj) {
year = PyDateTime::GetYears(obj);
month = PyDateTime::GetMonths(obj);
day = PyDateTime::GetDays(obj);
hour = PyDateTime::GetHours(obj);
minute = PyDateTime::GetMinutes(obj);
second = PyDateTime::GetSeconds(obj);
micros = PyDateTime::GetMicros(obj);
tzone_obj = PyDateTime::GetTZInfo(obj);
}
timestamp_t PyDateTime::ToTimestamp() {
auto date = ToDate();
auto time = ToDuckTime();
return Timestamp::FromDatetime(date, time);
}
Value PyDateTime::ToDuckValue(const LogicalType &target_type) {
auto timestamp = ToTimestamp();
if (!nb::none().is(tzone_obj)) {
auto utc_offset = PyTimezone::GetUTCOffset(obj, tzone_obj);
// Need to subtract the UTC offset, so we invert the interval
utc_offset = Interval::Invert(utc_offset);
timestamp = Interval::Add(timestamp, utc_offset);
return Value::TIMESTAMPTZ(timestamp_tz_t(timestamp));
}
switch (target_type.id()) {
case LogicalTypeId::UNKNOWN:
case LogicalTypeId::TIMESTAMP: {
return Value::TIMESTAMP(timestamp);
}
case LogicalTypeId::TIMESTAMP_SEC:
case LogicalTypeId::TIMESTAMP_MS:
case LogicalTypeId::TIMESTAMP_NS:
// Because the 'Time::FromTime' method constructs a regular (usecond) timestamp, this is not compatible with
// creating sec/ms/ns timestamps
throw NotImplementedException("Conversion from 'datetime' to type %s is not implemented yet",
target_type.ToString());
default:
throw ConversionException("Could not convert 'datetime' to type %s", target_type.ToString());
}
}
date_t PyDateTime::ToDate() {
return Date::FromDate(year, month, day);
}
dtime_t PyDateTime::ToDuckTime() {
return Time::FromTime(hour, minute, second, micros);
}
int32_t PyDateTime::GetYears(nb::handle &obj) {
return PyDateTime_GET_YEAR(obj.ptr()); // NOLINT
}
int32_t PyDateTime::GetMonths(nb::handle &obj) {
return PyDateTime_GET_MONTH(obj.ptr()); // NOLINT
}
int32_t PyDateTime::GetDays(nb::handle &obj) {
return PyDateTime_GET_DAY(obj.ptr()); // NOLINT
}
int32_t PyDateTime::GetHours(nb::handle &obj) {
return PyDateTime_DATE_GET_HOUR(obj.ptr()); // NOLINT
}
int32_t PyDateTime::GetMinutes(nb::handle &obj) {
return PyDateTime_DATE_GET_MINUTE(obj.ptr()); // NOLINT
}
int32_t PyDateTime::GetSeconds(nb::handle &obj) {
return PyDateTime_DATE_GET_SECOND(obj.ptr()); // NOLINT
}
int32_t PyDateTime::GetMicros(nb::handle &obj) {
return PyDateTime_DATE_GET_MICROSECOND(obj.ptr()); // NOLINT
}
nb::object PyDateTime::GetTZInfo(nb::handle &obj) {
// The object returned is borrowed, there is no reference to steal
return nb::borrow<nb::object>(PyDateTime_DATE_GET_TZINFO(obj.ptr())); // NOLINT
}
PyDate::PyDate(nb::handle &ele) {
year = PyDateTime::GetYears(ele);
month = PyDateTime::GetMonths(ele);
day = PyDateTime::GetDays(ele);
}
date_t PyDate::ToDate() {
return Date::FromDate(year, month, day);
}
Value PyDate::ToDuckValue() {
auto value = Value::DATE(year, month, day);
return value;
}
void PythonObject::Initialize() {
PyDateTime_IMPORT; // NOLINT: Python datetime initialize #2
}
enum class InfinityType : uint8_t { NONE, POSITIVE, NEGATIVE };
InfinityType GetTimestampInfinityType(timestamp_t ×tamp) {
if (timestamp == timestamp_t::infinity()) {
return InfinityType::POSITIVE;
}
if (timestamp == timestamp_t::ninfinity()) {
return InfinityType::NEGATIVE;
}
return InfinityType::NONE;
}
nb::object PythonObject::FromStruct(const Value &val, const LogicalType &type,
const ClientProperties &client_properties) {
auto &struct_values = StructValue::GetChildren(val);
auto &child_types = StructType::GetChildTypes(type);
if (StructType::IsUnnamed(type)) {
duckdb::PyUtil::TupleBuilder py_tuple(struct_values.size());
for (idx_t i = 0; i < struct_values.size(); i++) {
auto &child_entry = child_types[i];
D_ASSERT(child_entry.first.empty());
auto &child_type = child_entry.second;
py_tuple.append(FromValue(struct_values[i], child_type, client_properties));
}
return py_tuple.take();
} else {
nb::dict py_struct;
for (idx_t i = 0; i < struct_values.size(); i++) {
auto &child_entry = child_types[i];
auto &child_name = child_entry.first;
auto &child_type = child_entry.second;
py_struct[child_name.c_str()] = FromValue(struct_values[i], child_type, client_properties);
}
return std::move(py_struct);
}
}
static bool KeyIsHashable(const LogicalType &type) {
switch (type.id()) {
case LogicalTypeId::BOOLEAN:
case LogicalTypeId::TINYINT:
case LogicalTypeId::SMALLINT:
case LogicalTypeId::INTEGER:
case LogicalTypeId::BIGINT:
case LogicalTypeId::UTINYINT:
case LogicalTypeId::USMALLINT:
case LogicalTypeId::UINTEGER:
case LogicalTypeId::UBIGINT:
case LogicalTypeId::HUGEINT:
case LogicalTypeId::UHUGEINT:
case LogicalTypeId::FLOAT:
case LogicalTypeId::DOUBLE:
case LogicalTypeId::DECIMAL:
case LogicalTypeId::ENUM:
case LogicalTypeId::VARCHAR:
case LogicalTypeId::BLOB:
case LogicalTypeId::BIT:
case LogicalTypeId::TIMESTAMP:
case LogicalTypeId::TIMESTAMP_MS:
case LogicalTypeId::TIMESTAMP_NS:
case LogicalTypeId::TIMESTAMP_SEC:
case LogicalTypeId::TIMESTAMP_TZ:
case LogicalTypeId::TIMESTAMP_TZ_NS:
case LogicalTypeId::TIME_TZ:
case LogicalTypeId::TIME:
case LogicalTypeId::DATE:
case LogicalTypeId::UUID:
case LogicalTypeId::INTERVAL:
case LogicalTypeId::GEOMETRY:
return true;
case LogicalTypeId::LIST:
case LogicalTypeId::ARRAY:
case LogicalTypeId::MAP:
case LogicalTypeId::VARIANT:
return false;
case LogicalTypeId::UNION: {
idx_t count = UnionType::GetMemberCount(type);
for (idx_t i = 0; i < count; i++) {
if (!KeyIsHashable(UnionType::GetMemberType(type, i))) {
return false;
}
}
// Only if all the member types are hashable do we say the entire UNION is hashable
return true;
}
case LogicalTypeId::STRUCT:
case LogicalTypeId::TUPLE:
return false;
case LogicalTypeId::SQLNULL:
// A SQLNULL key is always NULL, and Python's None is hashable.
return true;
default:
throw NotImplementedException("Unsupported type: \"%s\"", type.ToString());
}
}
nb::object PythonObject::FromValue(const Value &val, const LogicalType &type,
const ClientProperties &client_properties) {
auto &import_cache = *DuckDBPyConnection::ImportCache();
if (val.IsNull()) {
return nb::none();
}
switch (type.id()) {
case LogicalTypeId::BOOLEAN:
return nb::cast(val.GetValue<bool>());
case LogicalTypeId::TINYINT:
return nb::cast(val.GetValue<int8_t>());
case LogicalTypeId::SMALLINT:
return nb::cast(val.GetValue<int16_t>());
case LogicalTypeId::INTEGER:
return nb::cast(val.GetValue<int32_t>());
case LogicalTypeId::BIGINT:
return nb::cast(val.GetValue<int64_t>());
case LogicalTypeId::UTINYINT:
return nb::cast(val.GetValue<uint8_t>());
case LogicalTypeId::USMALLINT:
return nb::cast(val.GetValue<uint16_t>());
case LogicalTypeId::UINTEGER:
return nb::cast(val.GetValue<uint32_t>());
case LogicalTypeId::UBIGINT:
return nb::cast(val.GetValue<uint64_t>());
case LogicalTypeId::HUGEINT:
return nb::steal<nb::object>(PyLong_FromString(val.GetValue<string>().c_str(), nullptr, 10));
case LogicalTypeId::UHUGEINT:
return nb::steal<nb::object>(PyLong_FromString(val.GetValue<string>().c_str(), nullptr, 10));
case LogicalTypeId::FLOAT:
return nb::cast(val.GetValue<float>());
case LogicalTypeId::DOUBLE:
return nb::cast(val.GetValue<double>());
case LogicalTypeId::DECIMAL: {
return import_cache.decimal.Decimal()(val.ToString());
}
case LogicalTypeId::ENUM:
return nb::cast(EnumType::GetValue(val));
case LogicalTypeId::UNION: {
return PythonObject::FromValue(UnionValue::GetValue(val), UnionValue::GetType(val), client_properties);
}
case LogicalTypeId::VARCHAR:
return nb::cast(StringValue::Get(val));
case LogicalTypeId::BLOB:
case LogicalTypeId::GEOMETRY: {
auto &blob = StringValue::Get(val);
return nb::bytes(blob.data(), blob.size());
}
case LogicalTypeId::BIT:
return nb::cast(Bit::ToString(StringValue::Get(val)));
case LogicalTypeId::TIMESTAMP:
case LogicalTypeId::TIMESTAMP_MS:
case LogicalTypeId::TIMESTAMP_NS:
case LogicalTypeId::TIMESTAMP_SEC:
case LogicalTypeId::TIMESTAMP_TZ:
case LogicalTypeId::TIMESTAMP_TZ_NS: {
D_ASSERT(type.InternalType() == PhysicalType::INT64);
auto timestamp = val.GetValueUnsafe<timestamp_t>();
InfinityType infinity = GetTimestampInfinityType(timestamp);
if (infinity == InfinityType::POSITIVE) {
return nb::borrow<nb::object>(import_cache.datetime.datetime.max());
}
if (infinity == InfinityType::NEGATIVE) {
return nb::borrow<nb::object>(import_cache.datetime.datetime.min());
}
if (type.id() == LogicalTypeId::TIMESTAMP_MS) {
timestamp = Timestamp::FromEpochMs(timestamp.value);
} else if (type.id() == LogicalTypeId::TIMESTAMP_NS || type.id() == LogicalTypeId::TIMESTAMP_TZ_NS) {
timestamp = Timestamp::FromEpochNanoSeconds(timestamp.value);
} else if (type.id() == LogicalTypeId::TIMESTAMP_SEC) {
timestamp = Timestamp::FromEpochSeconds(timestamp.value);
}
int32_t year, month, day, hour, min, sec, micros;
date_t date;
dtime_t time;
Timestamp::Convert(timestamp, date, time);
Date::Convert(date, year, month, day);
Time::Convert(time, hour, min, sec, micros);
nb::object py_timestamp;
try {
auto python_conversion = PyDateTime_FromDateAndTime(year, month, day, hour, min, sec, micros);
if (!python_conversion) {
throw nb::python_error();
}
py_timestamp = nb::steal<nb::object>(python_conversion);
} catch (nb::python_error &e) {
// Failed to convert, fall back to str
auto fallback_str = val.ToString();
return nb::str(fallback_str.c_str(), fallback_str.size());
}
if (type.id() == LogicalTypeId::TIMESTAMP_TZ || type.id() == LogicalTypeId::TIMESTAMP_TZ_NS) {
// We have to add the timezone info
auto tz_utc = import_cache.pytz.timezone()("UTC");
auto timestamp_utc = tz_utc.attr("localize")(py_timestamp);
auto tz_info = import_cache.pytz.timezone()(client_properties.time_zone);
return timestamp_utc.attr("astimezone")(tz_info);
}
return py_timestamp;
}
case LogicalTypeId::TIME_TZ: {
D_ASSERT(type.InternalType() == PhysicalType::INT64);
int32_t hour, min, sec, microsec;
auto time_tz = val.GetValueUnsafe<dtime_tz_t>();
auto time = time_tz.time();
auto offset = time_tz.offset();
duckdb::Time::Convert(time, hour, min, sec, microsec);
nb::object py_time;
try {
auto python_conversion = PyTime_FromTime(hour, min, sec, microsec);
if (!python_conversion) {
throw nb::python_error();
}
py_time = nb::steal<nb::object>(python_conversion);
} catch (nb::python_error &e) {
// Failed to convert, fall back to str
auto fallback_str = val.ToString();
return nb::str(fallback_str.c_str(), fallback_str.size());
}
// We have to add the timezone info
auto timedelta = import_cache.datetime.timedelta()(nb::arg("seconds") = offset);
auto timezone_offset = import_cache.datetime.timezone()(timedelta);
auto tmp_datetime = import_cache.datetime.datetime.min();
auto tmp_datetime_with_tz = import_cache.datetime.datetime.combine()(tmp_datetime, py_time, timezone_offset);
return tmp_datetime_with_tz.attr("timetz")();
}
case LogicalTypeId::TIME:
case LogicalTypeId::TIME_NS: {
D_ASSERT(type.InternalType() == PhysicalType::INT64);
int32_t hour, min, sec, usec;
dtime_t time;
if (type.id() == LogicalTypeId::TIME) {
time = val.GetValueUnsafe<dtime_t>();
} else {
// Python's datetime doesn't support nanoseconds, we convert to micros.
time = dtime_t(val.GetValueUnsafe<dtime_ns_t>().value / 1000);
}
duckdb::Time::Convert(time, hour, min, sec, usec);
try {
auto pytime = PyTime_FromTime(hour, min, sec, usec);
if (!pytime) {
throw nb::python_error();
}
return nb::steal<nb::object>(pytime);
} catch (nb::python_error &e) {
{
auto fallback = val.ToString();
return nb::str(fallback.c_str(), fallback.size());
}
}
}
case LogicalTypeId::DATE: {
D_ASSERT(type.InternalType() == PhysicalType::INT32);
auto date = val.GetValueUnsafe<date_t>();
int32_t year, month, day;
if (!Value::IsFinite(date)) {
if (date == date_t::infinity()) {
return nb::borrow<nb::object>(import_cache.datetime.date.max());
}
return nb::borrow<nb::object>(import_cache.datetime.date.min());
}
duckdb::Date::Convert(date, year, month, day);
try {
auto pydate = PyDate_FromDate(year, month, day);
if (!pydate) {
throw nb::python_error();
}
return nb::steal<nb::object>(pydate);
} catch (nb::python_error &e) {
{
auto fallback = val.ToString();
return nb::str(fallback.c_str(), fallback.size());
}
}
}
case LogicalTypeId::LIST: {
auto &list_values = ListValue::GetChildren(val);
nb::list list;
for (auto &list_elem : list_values) {
list.append(FromValue(list_elem, ListType::GetChildType(type), client_properties));
}
return std::move(list);
}
case LogicalTypeId::ARRAY: {
auto &array_values = ArrayValue::GetChildren(val);
auto array_size = ArrayType::GetSize(type);
auto &child_type = ArrayType::GetChildType(type);
duckdb::PyUtil::TupleBuilder arr(array_size);
for (idx_t elem_idx = 0; elem_idx < array_size; elem_idx++) {
arr.append(FromValue(array_values[elem_idx], child_type, client_properties));
}
return arr.take();
}
case LogicalTypeId::MAP: {
auto &list_values = ListValue::GetChildren(val);
auto &key_type = MapType::KeyType(type);
auto &val_type = MapType::ValueType(type);
nb::dict py_struct;
if (KeyIsHashable(key_type)) {
for (auto &list_elem : list_values) {
auto &struct_children = StructValue::GetChildren(list_elem);
auto key = PythonObject::FromValue(struct_children[0], key_type, client_properties);
auto value = PythonObject::FromValue(struct_children[1], val_type, client_properties);
py_struct[std::move(key)] = std::move(value);
}
} else {
nb::list keys;
nb::list values;
for (auto &list_elem : list_values) {
auto &struct_children = StructValue::GetChildren(list_elem);
keys.append(PythonObject::FromValue(struct_children[0], key_type, client_properties));
values.append(PythonObject::FromValue(struct_children[1], val_type, client_properties));
}
py_struct["key"] = std::move(keys);
py_struct["value"] = std::move(values);
}
return std::move(py_struct);
}
case LogicalTypeId::STRUCT:
case LogicalTypeId::TUPLE: {
return FromStruct(val, type, client_properties);
}
case LogicalTypeId::UUID: {
auto uuid_value = val.GetValueUnsafe<hugeint_t>();
return import_cache.uuid.UUID()(UUID::ToString(uuid_value));
}
case LogicalTypeId::BIGNUM: {
auto bignum_value = val.GetValueUnsafe<bignum_t>();
auto bignum_str = Bignum::BignumToVarchar(bignum_value);
return nb::str(bignum_str.c_str(), bignum_str.size());
}
case LogicalTypeId::INTERVAL: {
auto interval_value = val.GetValueUnsafe<interval_t>();
int64_t days = duckdb::Interval::DAYS_PER_MONTH * interval_value.months + interval_value.days;
return import_cache.datetime.timedelta()(nb::arg("days") = days,
nb::arg("microseconds") = interval_value.micros);
}
case LogicalTypeId::VARIANT: {
Vector tmp(val, count_t(1));
RecursiveUnifiedVectorFormat format;
Vector::RecursiveToUnifiedFormat(tmp, format);
UnifiedVariantVectorData vector_data(format);
auto variant_val = VariantUtils::ConvertVariantToValue(vector_data, 0, 0);
return FromValue(variant_val, variant_val.type(), client_properties);
}
default:
throw NotImplementedException("Unsupported type: \"%s\"", type.ToString());
}
}
} // namespace duckdb
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