Struct rustc_middle::traits::query::CandidateStep [−][src]
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
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
Mutably borrows from an owned value. Read more
impl<Ctxt, T> DepNodeParams<Ctxt> for T where
Ctxt: DepContext,
T: for<'a> HashStable<StableHashingContext<'a>> + Debug,
impl<Ctxt, T> DepNodeParams<Ctxt> for T where
Ctxt: DepContext,
T: for<'a> HashStable<StableHashingContext<'a>> + Debug,
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). Read more
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. Read more
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: 120 bytes