Struct ProofV2TargetParent 

pub struct ProofV2TargetParent(/* private fields */);

The already-revealed parent branch of a ProofV2Target.

Self::NONE indicates that no parent is known and the proof must include the actual trie root. A known parent at path length n makes the proof start at its direct child at length n + 1. In particular, a known parent at path length zero means the root branch is already revealed, so the proof starts at one of its direct children. Known parent path lengths are always less than 64.

Parent contexts are ordered from broadest to narrowest: Self::NONE precedes every known parent, and known parents are ordered by path length.

Implementations

impl ProofV2TargetParent

pub const NONE: Self

No parent branch is known, so the proof must include the actual trie root.

pub const fn new(path_len: usize) -> Self

Returns a known parent branch with the given logical path length.

Panics

Panics if path_len is greater than or equal to 64.

pub const fn is_known(self) -> bool

Returns true if the parent branch is already known.

pub const fn path_len(self) -> Option<usize>

Returns the logical path length of the known parent branch, if any.

pub fn path(self, target_path: Nibbles) -> Option<Nibbles>

Returns the path of the known parent branch for the target path, if any.

Trait Implementations

impl Clone for ProofV2TargetParent

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ProofV2TargetParent

impl Debug for ProofV2TargetParent

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

Formats the value using the given formatter.

impl Default for ProofV2TargetParent

fn default() -> Self

Returns the “default value” for a type.

impl Eq for ProofV2TargetParent

impl Ord for ProofV2TargetParent

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.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to #147781)

Restrict a value to a certain range.

impl PartialEq for ProofV2TargetParent

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for ProofV2TargetParent

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 StructuralPartialEq for ProofV2TargetParent

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 2 bytes