Struct MethodFingerprint

#[repr(C)]
pub struct MethodFingerprint(/* private fields */);

Hash of method’s compact metadata, which uniquely represents method signature.

While nothing can be said about method implementation, matching method fingerprint means method name, inputs and outputs are what they are expected to be (struct and field names are ignored as explained in ContractMetadataKind::compact.

Implementations

impl MethodFingerprint

pub const fn new(method_metadata: &[u8]) -> Option<Self>

Create a new method fingerprint from its metadata.

None is returned for invalid metadata (see ContractMetadataKind::compact_external_args() for details).

pub const fn to_bytes(&self) -> &Blake3Hash

Trait Implementations

impl Clone for MethodFingerprint

fn clone(&self) -> MethodFingerprint

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for MethodFingerprint

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

Formats the value using the given formatter.

impl Display for MethodFingerprint

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

Formats the value using the given formatter.

impl Hash for MethodFingerprint

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 Ord for MethodFingerprint

fn cmp(&self, other: &MethodFingerprint) -> 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 MethodFingerprint

fn eq(&self, other: &MethodFingerprint) -> 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 MethodFingerprint

fn partial_cmp(&self, other: &MethodFingerprint) -> 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 TrivialType for MethodFingerprint

where Blake3Hash: TrivialType,

const METADATA: &[u8]

Data structure metadata in binary form, describing shape and types of the contents, see IoTypeMetadataKind for encoding details.

const SIZE: u32 = _

unsafe fn from_bytes(bytes: &[u8]) -> Option<&Self>

Create a reference to a type, which is represented by provided memory.

unsafe fn from_bytes_mut(bytes: &mut [u8]) -> Option<&mut Self>

Create a mutable reference to a type, which is represented by provided memory.

fn as_bytes(&self) -> &[u8]

Access the underlying byte representation of a data structure

unsafe fn as_bytes_mut(&mut self) -> &mut [u8]

Access the underlying mutable byte representation of a data structure.

impl Copy for MethodFingerprint

impl Eq for MethodFingerprint

impl StructuralPartialEq for MethodFingerprint