Struct rustc_span::def_id::StableCrateId
source · pub struct StableCrateId(pub(crate) Hash64);
Expand description
A StableCrateId
is a 64-bit hash of a crate name, together with all
-Cmetadata
arguments, and some other data. 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 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.
For more information on the possibility of hash collisions in rustc,
see the discussion in DefId
.
Tuple Fields§
§0: Hash64
Implementations§
Trait Implementations§
source§impl Clone for StableCrateId
impl Clone for StableCrateId
source§fn clone(&self) -> StableCrateId
fn clone(&self) -> StableCrateId
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for StableCrateId
impl Debug for StableCrateId
source§impl<__D: Decoder> Decodable<__D> for StableCrateId
impl<__D: Decoder> Decodable<__D> for StableCrateId
source§impl<__E: Encoder> Encodable<__E> for StableCrateId
impl<__E: Encoder> Encodable<__E> for StableCrateId
source§impl Hash for StableCrateId
impl Hash for StableCrateId
source§impl<__CTX> HashStable<__CTX> for StableCrateIdwhere
__CTX: HashStableContext,
impl<__CTX> HashStable<__CTX> for StableCrateIdwhere __CTX: HashStableContext,
fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)
source§impl LowerHex for StableCrateId
impl LowerHex for StableCrateId
source§impl Ord for StableCrateId
impl Ord for StableCrateId
source§fn cmp(&self, other: &StableCrateId) -> Ordering
fn cmp(&self, other: &StableCrateId) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere Self: Sized,
source§impl PartialEq<StableCrateId> for StableCrateId
impl PartialEq<StableCrateId> for StableCrateId
source§fn eq(&self, other: &StableCrateId) -> bool
fn eq(&self, other: &StableCrateId) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd<StableCrateId> for StableCrateId
impl PartialOrd<StableCrateId> for StableCrateId
source§fn partial_cmp(&self, other: &StableCrateId) -> Option<Ordering>
fn partial_cmp(&self, other: &StableCrateId) -> Option<Ordering>
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self
and other
) and is used by the <=
operator. Read moreimpl Copy for StableCrateId
impl Eq for StableCrateId
impl StructuralEq for StableCrateId
impl StructuralPartialEq for StableCrateId
Auto Trait Implementations§
impl RefUnwindSafe for StableCrateId
impl Send for StableCrateId
impl Sync for StableCrateId
impl Unpin for StableCrateId
impl UnwindSafe for StableCrateId
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
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: 8 bytes