Struct PositionalSequenceHash 

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

A 128-bit positional sequence hash combining traditional sequence hash with positional information.

Layout:

• Lower 64 bits: Traditional SequenceHash
• Upper 64 bits: 2-bit mode + position + LocalBlockHash (BlockHash)

Modes (automatically selected based on position):

• Mode 00: 8-bit position (max 255) + 54-bit LBH
• Mode 01: 16-bit position (max 65,535) + 46-bit LBH
• Mode 10: 24-bit position (max 16,777,215) + 38-bit LBH
• Mode 11: 31-bit position (max 2,147,483,647) + 31-bit LBH

Implementations

impl PositionalSequenceHash

pub fn new( sequence_hash: SequenceHash, position: u64, local_block_hash: BlockHash, ) -> Self

Creates a new PositionalSequenceHash from components.

The mode is automatically selected based on the position value to use the minimal representation that can fit the position.

pub fn sequence_hash(&self) -> SequenceHash

Returns the sequence hash component (lower 64 bits).

pub fn position(&self) -> u64

Returns the block position.

pub fn local_block_hash(&self) -> BlockHash

Returns the local block hash (BlockHash) component.

pub fn mode(&self) -> u8

Returns the mode used for encoding (0, 1, 2, or 3).

pub fn as_u128(&self) -> u128

Returns the inner 128-bit value.

Trait Implementations

impl Clone for PositionalSequenceHash

fn clone(&self) -> PositionalSequenceHash

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PositionalSequenceHash

impl Debug for PositionalSequenceHash

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

Formats the value using the given formatter.

impl Default for PositionalSequenceHash

fn default() -> PositionalSequenceHash

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for PositionalSequenceHash

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for PositionalSequenceHash

impl Hash for PositionalSequenceHash

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 PartialEq for PositionalSequenceHash

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

Equality operator ==.

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

Inequality operator !=.

impl PositionalHash for PositionalSequenceHash

fn position(&self) -> u64

Returns the position associated with the hash.

impl Serialize for PositionalSequenceHash

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 PositionalSequenceHash