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ExtensionNode

reth_trie_common

Struct ExtensionNode

pub struct ExtensionNode {
    pub key: Nibbles,
    pub child: RlpNode,
}

Expand description

Re-export An extension node in an Ethereum Merkle Patricia Trie.

An intermediate node that exists solely to compress the trie’s paths. It contains a path segment (a shared prefix of keys) and a single child pointer. Essentially, an extension node can be thought of as a shortcut within the trie to reduce its overall depth.

The purpose of an extension node is to optimize the trie structure by collapsing multiple nodes with a single child into one node. This simplification reduces the space and computational complexity when performing operations on the trie.

Fields§

§key: Nibbles

The key for this extension node.

§child: RlpNode

A pointer to the child node.

Implementations§

impl ExtensionNode

pub const EVEN_FLAG: u8 = 0x00

The flag representing the even number of nibbles in the extension key.

pub const ODD_FLAG: u8 = 0x10

The flag representing the odd number of nibbles in the extension key.

pub const fn new(key: Nibbles, child: RlpNode) -> ExtensionNode

Creates a new extension node with the given key and a pointer to the child.

pub fn as_ref(&self) -> ExtensionNodeRef<'_>

Return extension node as ExtensionNodeRef.

Trait Implementations§

impl Clone for ExtensionNode

fn clone(&self) -> ExtensionNode

Returns a duplicate of the value. Read more

1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more

impl Debug for ExtensionNode

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

Formats the value using the given formatter. Read more

impl Decodable for ExtensionNode

fn decode(buf: &mut &[u8]) -> Result<ExtensionNode, Error>

Decodes the blob into the appropriate type. buf must be advanced past the decoded object.

impl<'de> Deserialize<'de> for ExtensionNode

fn deserialize<D>( deserializer: D, ) -> Result<ExtensionNode, <D as Deserializer<'de>>::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more

impl Encodable for ExtensionNode

fn encode(&self, out: &mut dyn BufMut)

Encodes the type into the out buffer.

fn length(&self) -> usize

Returns the length of the encoding of this type in bytes. Read more

impl Eq for ExtensionNode

impl PartialEq for ExtensionNode

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

Equality operator ==. Read more

1.0.0 (const: unstable) · Source§

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

Inequality operator !=. Read more

impl Serialize for ExtensionNode

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

Serialize this value into the given Serde serializer. Read more

impl StructuralPartialEq for ExtensionNode

Auto Trait Implementations§

impl Freeze for ExtensionNode

impl RefUnwindSafe for ExtensionNode

impl Send for ExtensionNode

impl Sync for ExtensionNode

impl Unpin for ExtensionNode

impl UnsafeUnpin for ExtensionNode

impl UnwindSafe for ExtensionNode

Blanket Implementations§

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

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

Mutably borrows from an owned value. Read more

impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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

unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit #126799)

Performs copy-assignment from self to dest. Read more

impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,

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

fn __clone_box(&self, _: Private) -> *mut ()

impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.

impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more

fn in_current_span(self) -> Instrumented<Self> ⓘ

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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

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> IntoEither for T

fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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

impl<T> MaybeSerde for T
where T: Serialize + for<'de> Deserialize<'de>,

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

fn type_id(&self) -> TypeId

Returns the lifetime-erased type ID of self.

impl<T> Pointable for T

const ALIGN: usize

The alignment of pointer.

type Init = T

The type for initializers.

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more

impl<T> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

impl<T> Same for T

type Output = T

Should always be Self

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

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

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

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

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 = !

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, !>

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.

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

Performs the conversion.

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

fn vzip(self) -> V

impl<T> WithSubscriber for T

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘ
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more

fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ

Attaches the current default Subscriber to this type, returning a [WithDispatch] wrapper. Read more

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: 80 bytes