Struct DataType

pub struct DataType { /* private fields */ }

Represents a data type including metadata.

Implementations

impl DataType

pub fn new(type_name: &str, metadata: Option<IndexMap<String, String>>) -> Self

Creates a new DataType instance.

pub fn type_name(&self) -> &str

Returns the type name for the data type.

pub fn metadata(&self) -> Option<&IndexMap<String, String>>

Returns the metadata for the data type.

pub fn metadata_str(&self) -> String

Returns a string representation of the metadata.

pub fn topic(&self) -> &str

Returns the messaging topic for the data type.

pub fn instrument_id(&self) -> Option<InstrumentId>

Returns an Option<InstrumentId> parsed from the metadata.

Panics

This function panics if:

• There is no metadata.
• The instrument_id value contained in the metadata is invalid.

pub fn venue(&self) -> Option<Venue>

Returns an Option<Venue> parsed from the metadata.

Panics

This function panics if:

• There is no metadata.
• The venue value contained in the metadata is invalid.

pub fn start(&self) -> Option<UnixNanos>

Returns an Option<UnixNanos> parsed from the metadata start field.

Panics

This function panics if:

• There is no metadata.
• The start value contained in the metadata is invalid.

pub fn end(&self) -> Option<UnixNanos>

Returns an Option<UnixNanos> parsed from the metadata end field.

Panics

This function panics if:

• There is no metadata.
• The end value contained in the metadata is invalid.

pub fn limit(&self) -> Option<usize>

Returns an Option<usize> parsed from the metadata limit field.

Panics

This function panics if:

• There is no metadata.
• The limit value contained in the metadata is invalid.

Trait Implementations

impl Clone for DataType

fn clone(&self) -> DataType

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DataType

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for DataType

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for DataType

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

Formats the value using the given formatter.

impl Hash for DataType

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<'py> IntoPyObject<'py> for DataType

type Target = DataType

The Python output type

type Output = Bound<'py, <DataType as IntoPyObject<'py>>::Target>

The smart pointer type to use.

type Error = PyErr

The type returned in the event of a conversion error.

fn into_pyobject( self, py: Python<'py>, ) -> Result<<Self as IntoPyObject<'_>>::Output, <Self as IntoPyObject<'_>>::Error>

Performs the conversion.

impl Ord for DataType

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for DataType

fn eq(&self, other: &Self) -> 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 PartialOrd for DataType

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl PyClass for DataType

type Frozen = False

Whether the pyclass is frozen.

impl PyClassImpl for DataType

const IS_BASETYPE: bool = false

#[pyclass(subclass)]

const IS_SUBCLASS: bool = false

#[pyclass(extends=…)]

const IS_MAPPING: bool = false

#[pyclass(mapping)]

const IS_SEQUENCE: bool = false

#[pyclass(sequence)]

const IS_IMMUTABLE_TYPE: bool = false

#[pyclass(immutable_type)]

type BaseType = PyAny

Base class

type ThreadChecker = SendablePyClass<DataType>

This handles following two situations:

type PyClassMutability = <<PyAny as PyClassBaseType>::PyClassMutability as PyClassMutability>::MutableChild

Immutable or mutable

type Dict = PyClassDummySlot

Specify this class has #[pyclass(dict)] or not.

type WeakRef = PyClassDummySlot

Specify this class has #[pyclass(weakref)] or not.

type BaseNativeType = PyAny

The closest native ancestor. This is PyAny by default, and when you declare #[pyclass(extends=PyDict)], it’s PyDict.

fn items_iter() -> PyClassItemsIter

fn doc(py: Python<'_>) -> PyResult<&'static CStr>

Rendered class doc

fn lazy_type_object() -> &'static LazyTypeObject<Self>

fn dict_offset() -> Option<isize>

fn weaklist_offset() -> Option<isize>

impl PyClassNewTextSignature<DataType> for PyClassImplCollector<DataType>

fn new_text_signature(self) -> Option<&'static str>

impl<'a, 'py> PyFunctionArgument<'a, 'py, false> for &'a DataType

type Holder = Option<PyRef<'py, DataType>>

fn extract( obj: &'a Bound<'py, PyAny>, holder: &'a mut Self::Holder, ) -> PyResult<Self>

impl<'a, 'py> PyFunctionArgument<'a, 'py, false> for &'a mut DataType

type Holder = Option<PyRefMut<'py, DataType>>

fn extract( obj: &'a Bound<'py, PyAny>, holder: &'a mut Self::Holder, ) -> PyResult<Self>

impl PyMethods<DataType> for PyClassImplCollector<DataType>

fn py_methods(self) -> &'static PyClassItems

impl PyTypeInfo for DataType

const NAME: &'static str = "DataType"

Class name.

const MODULE: Option<&'static str>

Module name, if any.

fn type_object_raw(py: Python<'_>) -> *mut PyTypeObject

Returns the PyTypeObject instance for this type.

fn type_object(py: Python<'_>) -> Bound<'_, PyType>

Returns the safe abstraction over the type object.

fn is_type_of(object: &Bound<'_, PyAny>) -> bool

Checks if object is an instance of this type or a subclass of this type.

fn is_exact_type_of(object: &Bound<'_, PyAny>) -> bool

Checks if object is an instance of this type.

impl Serialize for DataType

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl DerefToPyAny for DataType

impl Eq for DataType