Enum TypeId 

#[non_exhaustive]
#[repr(i32)]
pub enum TypeId {
    Empty = 0,
    Int8 = 1,
    Int16 = 2,
    Int32 = 3,
    Int64 = 4,
    Uint8 = 5,
    Uint16 = 6,
    Uint32 = 7,
    Uint64 = 8,
    Float32 = 9,
    Float64 = 10,
    Bool8 = 11,
    TimestampDays = 12,
    TimestampSeconds = 13,
    TimestampMilliseconds = 14,
    TimestampMicroseconds = 15,
    TimestampNanoseconds = 16,
    DurationDays = 17,
    DurationSeconds = 18,
    DurationMilliseconds = 19,
    DurationMicroseconds = 20,
    DurationNanoseconds = 21,
    Dictionary32 = 22,
    String = 23,
    List = 24,
    Decimal32 = 25,
    Decimal64 = 26,
    Decimal128 = 27,
    Struct = 28,
}

Identifies the element type stored in a Column.

This enum mirrors cudf::type_id and covers all data types supported by libcudf, including numeric, temporal, string, and nested types.

IMPORTANT: Synchronization requirement – The discriminant values in this enum MUST match cudf::type_id (C++) exactly. The cxx bridge passes type IDs as i32, so this enum’s #[repr(i32)] values are the source of truth on the Rust side. If you add or reorder variants, update both the C++ cudf::type_id mapping and this enum.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Empty = 0

Empty (no data)

Int8 = 1

Signed 8-bit integer

Int16 = 2

Signed 16-bit integer

Int32 = 3

Signed 32-bit integer

Int64 = 4

Signed 64-bit integer

Uint8 = 5

Unsigned 8-bit integer

Uint16 = 6

Unsigned 16-bit integer

Uint32 = 7

Unsigned 32-bit integer

Uint64 = 8

Unsigned 64-bit integer

Float32 = 9

32-bit floating point

Float64 = 10

64-bit floating point

Bool8 = 11

Boolean (stored as 8-bit)

TimestampDays = 12

Timestamp in days since epoch

TimestampSeconds = 13

Timestamp in seconds since epoch

TimestampMilliseconds = 14

Timestamp in milliseconds since epoch

TimestampMicroseconds = 15

Timestamp in microseconds since epoch

TimestampNanoseconds = 16

Timestamp in nanoseconds since epoch

DurationDays = 17

Duration in days

DurationSeconds = 18

Duration in seconds

DurationMilliseconds = 19

Duration in milliseconds

DurationMicroseconds = 20

Duration in microseconds

DurationNanoseconds = 21

Duration in nanoseconds

Dictionary32 = 22

Dictionary-encoded column (32-bit indices)

String = 23

Variable-length UTF-8 string

List = 24

List (nested column of variable-length sequences)

Decimal32 = 25

32-bit fixed-point decimal

Decimal64 = 26

64-bit fixed-point decimal

Decimal128 = 27

128-bit fixed-point decimal

Struct = 28

Struct (nested column of named fields)

Implementations

impl TypeId

pub fn size_in_bytes(self) -> usize

Returns the size in bytes of a single element of this type. Returns 0 for variable-width types (String, List, Struct).

pub fn is_fixed_width(self) -> bool

Whether this type has a fixed width (known size per element).

pub fn is_numeric(self) -> bool

Whether this type is a numeric type (integer or floating point).

pub fn is_integer(self) -> bool

Whether this type is an integer type.

pub fn is_floating(self) -> bool

Whether this type is a floating-point type.

pub fn is_temporal(self) -> bool

Whether this type is a temporal type (timestamp or duration).

pub fn is_nested(self) -> bool

Whether this type is a nested type (List, Struct).

pub fn from_raw(value: i32) -> Option<Self>

Convert from raw i32 value. Returns None if the value is not a valid TypeId.

Trait Implementations

impl Clone for TypeId

fn clone(&self) -> TypeId

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TypeId

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for TypeId

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<TypeId> for DataType

fn from(id: TypeId) -> Self

Converts to this type from the input type.

impl Hash for TypeId

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for TypeId

fn eq(&self, other: &TypeId) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for TypeId

impl Eq for TypeId

impl StructuralPartialEq for TypeId