Struct ContentHash 

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

A stable content fingerprint of a file.

This hashes bytes only; it does not depend on line numbers, AST node ids or any other position-derived value, so it is stable across reformatting that leaves bytes unchanged and identical for two files with identical content.

Implementations

impl ContentHash

pub fn of(bytes: &[u8]) -> Self

Hash the given bytes.

pub fn as_str(&self) -> &str

The hash as a lowercase hex string.

pub const fn from_recorded(hex: String) -> Self

Take back a hash an earlier scan recorded.

Nothing is re-derived, so this cannot tell whether the string is the hash of anything. It exists so a stored fingerprint can be compared with a freshly computed one, which is the only thing either is for.

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 Debug for ContentHash

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

Formats the value using the given formatter.

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 PartialEq for ContentHash

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ContentHash