Struct ockam_core::TypeTag

pub struct TypeTag<const N: usize>;

A type tag represents a type as a unique numeric value.

This zero-sized type is meant to help catching type errors in cases where CBOR items structurally match various nominal types. It will end up as an unsigned integer in CBOR and decoding checks that the value is expected.

Trait Implementations

impl<const N: usize> Clone for TypeTag<N>

fn clone(&self) -> TypeTag<N>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<const N: usize> Debug for TypeTag<N>

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

Formats the value using the given formatter.

impl<'b, C, const N: usize> Decode<'b, C> for TypeTag<N>

fn decode(d: &mut Decoder<'b>, _: &mut C) -> Result<Self, Error>

Decode a value using the given Decoder.

fn nil() -> Option<Self>

If possible, return a nil value of Self.

impl<const N: usize> Default for TypeTag<N>

fn default() -> TypeTag<N>

Returns the “default value” for a type.

impl<C, const N: usize> Encode<C> for TypeTag<N>

fn encode<W: Write>( &self, e: &mut Encoder<W>, _: &mut C ) -> Result<(), Error<W::Error>>

Encode a value of this type using the given Encoder.

fn is_nil(&self) -> bool

Is this value of Self a nil value?

impl<const N: usize> Hash for TypeTag<N>

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<const N: usize> Ord for TypeTag<N>

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl<const N: usize> PartialEq<TypeTag<N>> for TypeTag<N>

fn eq(&self, _other: &Self) -> bool

This method tests for self and other values to be equal, and is used by ==.

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

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

impl<const N: usize> PartialOrd<TypeTag<N>> for TypeTag<N>

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl<const N: usize> Serialize for TypeTag<N>

fn serialize<S: Serializer>(&self, s: S) -> Result<S::Ok, S::Error>

Serialize this value into the given Serde serializer.

impl<const N: usize> Zeroize for TypeTag<N>

fn zeroize(&mut self)

Zero out this object from memory using Rust intrinsics which ensure the zeroization operation is not “optimized away” by the compiler.

impl<const N: usize> Copy for TypeTag<N>

impl<const N: usize> Eq for TypeTag<N>

impl<const N: usize> StructuralEq for TypeTag<N>