Struct NibblePath 

pub struct NibblePath { /* private fields */ }

NibblePath defines a path in Merkle tree in the unit of nibble (4 bits).

Implementations

impl NibblePath

pub fn new(bytes: Vec<u8>) -> Self

Creates a new NibblePath from a vector of bytes assuming each byte has 2 nibbles.

pub fn new_odd(bytes: Vec<u8>) -> Self

Similar to new() but assumes that the bytes have one less nibble.

pub fn push(&mut self, nibble: Nibble)

Adds a nibble to the end of the nibble path.

pub fn pop(&mut self) -> Option<Nibble>

Pops a nibble from the end of the nibble path.

pub fn last(&self) -> Option<Nibble>

Returns the last nibble.

pub fn get_nibble(&self, i: usize) -> Nibble

Get the i-th nibble.

pub fn bits(&self) -> BitIterator<'_>

Get a bit iterator iterates over the whole nibble path.

pub fn nibbles(&self) -> NibbleIterator<'_>

Get a nibble iterator iterates over the whole nibble path.

pub fn num_nibbles(&self) -> usize

Get the total number of nibbles stored.

pub fn is_empty(&self) -> bool

Returns true if the nibbles contains no elements.

pub fn bytes(&self) -> &[u8]

Get the underlying bytes storing nibbles.

Trait Implementations

impl Clone for NibblePath

fn clone(&self) -> NibblePath

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for NibblePath

Supports debug format by concatenating nibbles literally. For example, [0x12, 0xa0] with 3 nibbles will be printed as “12a”.

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for NibblePath

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for NibblePath

impl FromIterator<Nibble> for NibblePath

Convert a vector of bytes into NibblePath using the lower 4 bits of each byte as nibble.

fn from_iter<I: IntoIterator<Item = Nibble>>(iter: I) -> Self

Creates a value from an iterator.

impl Hash for NibblePath

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 NibblePath

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

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for NibblePath

fn partial_cmp(&self, other: &NibblePath) -> 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 Serialize for NibblePath

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for NibblePath