Enum trie_db::node::Node

source · [−]

pub enum Node<'a> {
    Empty,
    Leaf(NibbleSlice<'a>, &'a [u8]),
    Extension(NibbleSlice<'a>, NodeHandle<'a>),
    Branch([Option<NodeHandle<'a>>; 16], Option<&'a [u8]>),
    NibbledBranch(NibbleSlice<'a>, [Option<NodeHandle<'a>>; 16], Option<&'a [u8]>),
}

Expand description

Type of node in the trie and essential information thereof.

Variants

`Empty`

Null trie node; could be an empty root or an empty branch entry.

`Leaf(NibbleSlice<'a>, &'a [u8])`

Leaf node; has key slice and value. Value may not be empty.

`Extension(NibbleSlice<'a>, NodeHandle<'a>)`

Extension node; has key slice and node data. Data may not be null.

`Branch([Option<NodeHandle<'a>>; 16], Option<&'a [u8]>)`

Branch node; has slice of child nodes (each possibly null) and an optional immediate node data.

`NibbledBranch(NibbleSlice<'a>, [Option<NodeHandle<'a>>; 16], Option<&'a [u8]>)`

Branch node with support for a nibble (when extension nodes are not used).

Trait Implementations

impl<'a> Clone for Node<'a>

fn clone(&self) -> Node<'a>

Returns a copy of the value. Read more

1.0.0 · source

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

Performs copy-assignment from source. Read more

impl<'a> Debug for Node<'a>

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

Formats the value using the given formatter. Read more

impl<'a> PartialEq<Node<'a>> for Node<'a>

fn eq(&self, other: &Node<'a>) -> bool

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

fn ne(&self, other: &Node<'a>) -> bool

This method tests for !=.

impl<'a> Eq for Node<'a>

impl<'a> StructuralEq for Node<'a>

impl<'a> StructuralPartialEq for Node<'a>

Auto Trait Implementations

impl<'a> RefUnwindSafe for Node<'a>

impl<'a> Send for Node<'a>

impl<'a> Sync for Node<'a>

impl<'a> Unpin for Node<'a>

impl<'a> UnwindSafe for Node<'a>

Blanket Implementations

impl<T> Any for T where
T: 'static + ?Sized,

pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

pub fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

const: unstable · source

pub fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T where
U: From<T>,

const: unstable · source

pub fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

pub fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

pub fn clone_into(&self, target: &mut T)

🔬 This is a nightly-only experimental API. (toowned_clone_into)

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T, U> TryFrom<U> for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

impl<T> MaybeDebug for T where
T: Debug,