Enum VersionUpgradePolicy

#[non_exhaustive]
pub enum VersionUpgradePolicy {
    AsIs,
    Upgrade,
}

How to handle decoding DBN data from a prior version.

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.

AsIs

Decode data from previous versions as-is.

Upgrade

Decode data from previous versions converting it to the latest version. This breaks zero-copy decoding for structs that need updating, but makes usage simpler.

Trait Implementations

impl Clone for VersionUpgradePolicy

fn clone(&self) -> VersionUpgradePolicy

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for VersionUpgradePolicy

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

Formats the value using the given formatter.

impl Default for VersionUpgradePolicy

fn default() -> VersionUpgradePolicy

Returns the “default value” for a type.

impl FromStr for VersionUpgradePolicy

type Err = Error

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl Hash for VersionUpgradePolicy

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 IntoEnumIterator for VersionUpgradePolicy

type Iterator = VersionUpgradePolicyIter

fn iter() -> VersionUpgradePolicyIter

impl IntoPy<Py<PyAny>> for VersionUpgradePolicy

fn into_py(self, py: Python<'_>) -> PyObject

Performs the conversion.

impl PartialEq for VersionUpgradePolicy

fn eq(&self, other: &VersionUpgradePolicy) -> 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 PyClass for VersionUpgradePolicy

type Frozen = False

Whether the pyclass is frozen.

impl PyClassImpl for VersionUpgradePolicy

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)]

type BaseType = PyAny

Base class

type ThreadChecker = SendablePyClass<VersionUpgradePolicy>

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

Available on non-crate feature gil-refs only.

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<'a, 'py> PyFunctionArgument<'a, 'py> for &'a VersionUpgradePolicy

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

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

impl<'a, 'py> PyFunctionArgument<'a, 'py> for &'a mut VersionUpgradePolicy

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

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

impl PyMethods<VersionUpgradePolicy> for PyClassImplCollector<VersionUpgradePolicy>

Available on crate feature python only.

fn py_methods(self) -> &'static PyClassItems

impl PyTypeInfo for VersionUpgradePolicy

const NAME: &'static str = "VersionUpgradePolicy"

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

Returns the safe abstraction over the type object.

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

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

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

Checks if object is an instance of this type.

impl Copy for VersionUpgradePolicy

impl Eq for VersionUpgradePolicy

impl StructuralPartialEq for VersionUpgradePolicy