Struct rustc_span::def_id::StableCrateId

pub struct StableCrateId(u64);

A StableCrateId is a 64 bit hash of (crate-name, crate-disambiguator). It is to CrateNum what DefPathHash is to DefId. It is stable across compilation sessions.

Since the ID is a hash value there is a (very small) chance that two crates end up with the same StableCrateId. The compiler will check for such collisions when loading crates and abort compilation in order to avoid further trouble.

Implementations

impl StableCrateId

pub fn new(
    crate_name: &str,
    crate_disambiguator: CrateDisambiguator
) -> StableCrateId

Computes the stable ID for a crate with the given name and disambiguator.

Trait Implementations

impl Clone for StableCrateId

fn clone(&self) -> StableCrateId

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for StableCrateId

impl Debug for StableCrateId

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

Formats the value using the given formatter.

impl<__D: Decoder> Decodable<__D> for StableCrateId

fn decode(__decoder: &mut __D) -> Result<Self, <__D as Decoder>::Error>

impl<__E: Encoder> Encodable<__E> for StableCrateId

fn encode(&self, __encoder: &mut __E) -> Result<(), <__E as Encoder>::Error>

impl Eq for StableCrateId

impl Hash for StableCrateId

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

pub fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl Ord for StableCrateId

fn cmp(&self, other: &StableCrateId) -> Ordering

This method returns an Ordering between self and other.

#[must_use]pub fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]pub fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]pub fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl PartialEq<StableCrateId> for StableCrateId

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl PartialOrd<StableCrateId> for StableCrateId

fn partial_cmp(&self, other: &StableCrateId) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

#[must_use]pub fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

#[must_use]pub fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

#[must_use]pub fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

#[must_use]pub fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralEq for StableCrateId

impl StructuralPartialEq for StableCrateId