Struct rustc_middle::traits::query::CandidateStep
source · pub struct CandidateStep<'tcx> {
pub self_ty: Canonical<'tcx, QueryResponse<'tcx, Ty<'tcx>>>,
pub autoderefs: usize,
pub from_unsafe_deref: bool,
pub unsize: bool,
}
Fields§
§self_ty: Canonical<'tcx, QueryResponse<'tcx, Ty<'tcx>>>
§autoderefs: usize
§from_unsafe_deref: bool
true
if the type results from a dereference of a raw pointer.
when assembling candidates, we include these steps, but not when
picking methods. This so that if we have foo: *const Foo
and Foo
has methods
fn by_raw_ptr(self: *const Self)
and fn by_ref(&self)
, then
foo.by_raw_ptr()
will work and foo.by_ref()
won’t.
unsize: bool
Trait Implementations§
source§impl<'tcx> ArenaAllocatable<'tcx, IsNotCopy> for CandidateStep<'tcx>
impl<'tcx> ArenaAllocatable<'tcx, IsNotCopy> for CandidateStep<'tcx>
fn allocate_on<'a>(self, arena: &'a Arena<'tcx>) -> &'a mut Self
fn allocate_from_iter<'a>( arena: &'a Arena<'tcx>, iter: impl IntoIterator<Item = Self> ) -> &'a mut [Self]
source§impl<'tcx> Debug for CandidateStep<'tcx>
impl<'tcx> Debug for CandidateStep<'tcx>
source§impl<'tcx, '__ctx> HashStable<StableHashingContext<'__ctx>> for CandidateStep<'tcx>
impl<'tcx, '__ctx> HashStable<StableHashingContext<'__ctx>> for CandidateStep<'tcx>
fn hash_stable( &self, __hcx: &mut StableHashingContext<'__ctx>, __hasher: &mut StableHasher )
Auto Trait Implementations§
impl<'tcx> !RefUnwindSafe for CandidateStep<'tcx>
impl<'tcx> !Send for CandidateStep<'tcx>
impl<'tcx> !Sync for CandidateStep<'tcx>
impl<'tcx> Unpin for CandidateStep<'tcx>
impl<'tcx> !UnwindSafe for CandidateStep<'tcx>
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
Mutably borrows from an owned value. Read more
source§impl<T, R> CollectAndApply<T, R> for T
impl<T, R> CollectAndApply<T, R> for T
source§impl<Tcx, T> DepNodeParams<Tcx> for Twhere
Tcx: DepContext,
T: for<'a> HashStable<StableHashingContext<'a>> + Debug,
impl<Tcx, T> DepNodeParams<Tcx> for Twhere Tcx: DepContext, T: for<'a> HashStable<StableHashingContext<'a>> + Debug,
default fn fingerprint_style() -> FingerprintStyle
source§default fn to_fingerprint(&self, tcx: Tcx) -> Fingerprint
default fn to_fingerprint(&self, tcx: Tcx) -> Fingerprint
This method turns the parameters of a DepNodeConstructor into an opaque
Fingerprint to be used in DepNode.
Not all DepNodeParams support being turned into a Fingerprint (they
don’t need to if the corresponding DepNode is anonymous).
default fn to_debug_str(&self, _: Tcx) -> String
source§default fn recover(_: Tcx, _: &DepNode) -> Option<T>
default fn recover(_: Tcx, _: &DepNode) -> Option<T>
This method tries to recover the query key from the given
DepNode
,
something which is needed when forcing DepNode
s during red-green
evaluation. The query system will only call this method if
fingerprint_style()
is not FingerprintStyle::Opaque
.
It is always valid to return None
here, in which case incremental
compilation will treat the query as having changed instead of forcing it.source§impl<P> IntoQueryParam<P> for P
impl<P> IntoQueryParam<P> for P
fn into_query_param(self) -> P
source§impl<T> MaybeResult<T> for T
impl<T> MaybeResult<T> for T
source§impl<'tcx, T> ToPredicate<'tcx, T> for T
impl<'tcx, T> ToPredicate<'tcx, T> for T
fn to_predicate(self, _tcx: TyCtxt<'tcx>) -> T
source§impl<Tcx, T> Value<Tcx> for Twhere
Tcx: DepContext,
impl<Tcx, T> Value<Tcx> for Twhere Tcx: DepContext,
default fn from_cycle_error( tcx: Tcx, cycle: &[QueryInfo], _guar: ErrorGuaranteed ) -> 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: 128 bytes