Struct ContentHash 

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

A BLAKE3 content hash (32 bytes / 256 bits).

Used for content-addressing blobs, trees, and states. The hash changes when content changes.

Implementations

impl ContentHash

pub fn from_bytes(bytes: [u8; 32]) -> Self

Create a ContentHash from raw bytes.

pub fn compute(content: &[u8]) -> Self

Compute the hash of the given content.

pub fn compute_typed(type_prefix: &str, content: &[u8]) -> Self

Compute hash with a type prefix (e.g., “blob”, “tree”, “state”).

pub fn typed_hasher(type_prefix: &str, content_len: u64) -> Hasher

Create a typed hasher pre-seeded with the prefix and length.

pub fn compute_typed_with_len( type_prefix: &str, content_len: u64, update: impl FnOnce(&mut Hasher), ) -> Self

Compute hash with a known content length using incremental updates.

pub fn as_bytes(&self) -> &[u8; 32]

Get the raw bytes.

pub fn to_hex(&self) -> String

Convert to hexadecimal string.

pub fn from_hex(s: &str) -> Result<Self, FromHexError>

Parse from hexadecimal string.

pub fn short(&self) -> String

Get a short prefix for display (default 8 chars).

pub fn matches_prefix(&self, prefix: &str) -> bool

Check if a hex prefix matches this hash.

Trait Implementations

impl Clone for ContentHash

fn clone(&self) -> ContentHash

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ContentHash

impl Debug for ContentHash

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ContentHash

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for ContentHash

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

Formats the value using the given formatter.

impl Eq for ContentHash

impl Hash for ContentHash

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 ContentHash

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

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd for ContentHash

fn partial_cmp(&self, other: &ContentHash) -> 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 ContentHash

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 ContentHash