reth_trie

Struct ExtensionNode

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

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§

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impl ExtensionNode

pub const EVEN_FLAG: u8 = 0u8

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

pub const ODD_FLAG: u8 = 16u8

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§

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impl Clone for ExtensionNode

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fn clone(&self) -> ExtensionNode

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for ExtensionNode

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

Formats the value using the given formatter. Read more
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impl Decodable for ExtensionNode

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

Decodes the blob into the appropriate type. buf must be advanced past the decoded object.
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impl Encodable for ExtensionNode

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

Encodes the type into the out buffer.
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fn length(&self) -> usize

Returns the length of the encoding of this type in bytes. Read more
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impl PartialEq for ExtensionNode

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Eq for ExtensionNode

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impl StructuralPartialEq for ExtensionNode

Auto Trait Implementations§

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impl<T> Any for T
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unsafe fn clone_to_uninit(&self, dst: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit #126799)
Performs copy-assignment from self to dst. Read more
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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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Causes self to use its Binary implementation when Debug-formatted.
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Causes self to use its LowerExp implementation when Debug-formatted.
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Causes self to use its LowerHex implementation when Debug-formatted.
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Causes self to use its Octal implementation when Debug-formatted.
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const ALIGN: usize

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type Init = T

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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: 112 bytes