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Copy pathpython_objects.hpp
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214 lines (181 loc) · 5.01 KB
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#pragma once
#include "duckdb_python/nb/casters.hpp"
#include "duckdb_python/pyutil.hpp"
#include "duckdb/common/types/time.hpp"
#include "duckdb/common/types/date.hpp"
#include "duckdb/common/types/timestamp.hpp"
#include "duckdb/common/types/interval.hpp"
#include "duckdb/common/types/value.hpp"
#include "duckdb/common/types/cast_helpers.hpp"
#include "duckdb/main/client_properties.hpp"
namespace duckdb {
struct PyDictionary {
public:
PyDictionary(nb::object dict);
// These are cached so we don't have to create new objects all the time
// The CPython API offers PyDict_Keys but that creates a new reference every time, same for values
nb::object keys;
nb::object values;
idx_t len;
public:
nb::handle operator[](const nb::object &obj) const {
return PyDict_GetItem(dict.ptr(), obj.ptr());
}
public:
string ToString() const {
return nb::cast<std::string>(nb::str(dict));
}
private:
nb::object dict;
};
enum class PyDecimalExponentType {
EXPONENT_SCALE, //! Amount of digits after the decimal point
EXPONENT_POWER, //! How many zeros behind the decimal point
EXPONENT_INFINITY, //! Decimal is INFINITY
EXPONENT_NAN //! Decimal is NAN
};
struct PyDecimal {
struct PyDecimalScaleConverter {
template <typename T, typename = std::enable_if<std::numeric_limits<T>::is_integer, T>>
static Value Operation(bool signed_value, vector<uint8_t> &digits, uint8_t width, uint8_t scale) {
T value = 0;
for (auto it = digits.begin(); it != digits.end(); it++) {
value = value * 10 + *it;
}
if (signed_value) {
value = -value;
}
return Value::DECIMAL(value, width, scale);
}
};
struct PyDecimalPowerConverter {
template <typename T, typename = std::enable_if<std::numeric_limits<T>::is_integer, T>>
static Value Operation(bool signed_value, vector<uint8_t> &digits, uint8_t width, uint8_t exponent) {
T value = 0;
for (auto &digit : digits) {
value = value * 10 + digit;
}
for (idx_t i = 0; i < exponent; i++) {
value *= 10;
}
if (signed_value) {
value = -value;
}
return Value::DECIMAL(value, width, 0);
}
};
public:
PyDecimal(nb::handle &obj);
vector<uint8_t> digits;
bool signed_value = false;
PyDecimalExponentType exponent_type;
int64_t exponent_value;
public:
bool TryGetType(LogicalType &type);
Value ToDuckValue();
private:
void SetExponent(nb::handle &exponent);
nb::handle &obj;
};
struct PyTimeDelta {
public:
PyTimeDelta(nb::handle &obj);
int32_t days;
int32_t seconds;
int64_t microseconds;
public:
interval_t ToInterval();
private:
static int64_t GetDays(nb::handle &obj);
static int64_t GetSeconds(nb::handle &obj);
static int64_t GetMicros(nb::handle &obj);
};
struct PyTime {
public:
PyTime(nb::handle &obj);
nb::object obj;
int32_t hour;
int32_t minute;
int32_t second;
int32_t microsecond;
nb::object timezone_obj;
public:
dtime_t ToDuckTime();
Value ToDuckValue();
private:
static int32_t GetHours(nb::handle &obj);
static int32_t GetMinutes(nb::handle &obj);
static int32_t GetSeconds(nb::handle &obj);
static int32_t GetMicros(nb::handle &obj);
static nb::object GetTZInfo(nb::handle &obj);
};
struct PyDateTime {
public:
PyDateTime(nb::handle &obj);
nb::object obj;
int32_t year;
int32_t month;
int32_t day;
int32_t hour;
int32_t minute;
int32_t second;
int32_t micros;
nb::object tzone_obj;
public:
timestamp_t ToTimestamp();
date_t ToDate();
dtime_t ToDuckTime();
Value ToDuckValue(const LogicalType &target_type);
public:
static int32_t GetYears(nb::handle &obj);
static int32_t GetMonths(nb::handle &obj);
static int32_t GetDays(nb::handle &obj);
static int32_t GetHours(nb::handle &obj);
static int32_t GetMinutes(nb::handle &obj);
static int32_t GetSeconds(nb::handle &obj);
static int32_t GetMicros(nb::handle &obj);
static nb::object GetTZInfo(nb::handle &obj);
};
struct PyDate {
public:
PyDate(nb::handle &ele);
int32_t year;
int32_t month;
int32_t day;
public:
date_t ToDate();
Value ToDuckValue();
};
struct PyTimezone {
public:
PyTimezone() = delete;
public:
DUCKDB_API static int32_t GetUTCOffsetSeconds(nb::handle &tzone_obj);
DUCKDB_API static interval_t GetUTCOffset(nb::handle &datetime, nb::handle &tzone_obj);
};
struct PythonObject {
static nb::object FromStruct(const Value &value, const LogicalType &id, const ClientProperties &client_properties);
static nb::object FromValue(const Value &value, const LogicalType &id, const ClientProperties &client_properties);
};
template <class T>
class Optional : public nb::object {
public:
Optional(const nb::object &o) : nb::object(o, nb::detail::borrow_t {}) {
}
using nb::object::object;
public:
static bool check_(const nb::handle &object) {
return object.is_none() || nb::isinstance<T>(object);
}
};
class FileLikeObject : public nb::object {
public:
FileLikeObject(const nb::object &o) : nb::object(o, nb::detail::borrow_t {}) {
}
using nb::object::object;
public:
static bool check_(const nb::handle &object) {
return duckdb::PyUtil::IsInstance(object, nb::module_::import_("io").attr("IOBase"));
}
};
} // namespace duckdb