Enum rustc_middle::traits::WellFormedLoc
source · [−]pub enum WellFormedLoc {
Ty(LocalDefId),
Param {
function: LocalDefId,
param_idx: u16,
},
}
Expand description
The ‘location’ at which we try to perform HIR-based wf checking.
This information is used to obtain an hir::Ty
, which
we can walk in order to obtain precise spans for any
‘nested’ types (e.g. Foo
in Option<Foo>
).
Variants
Ty(LocalDefId)
Use the type of the provided definition.
Param
Fields
function: LocalDefId
The function to lookup the parameter in
param_idx: u16
The index of the parameter to use. Parameters are indexed from 0, with the return type being the last ‘parameter’
Use the type of the parameter of the provided function.
We cannot use hir::Param
, since the function may
not have a body (e.g. a trait method definition)
Trait Implementations
sourceimpl Clone for WellFormedLoc
impl Clone for WellFormedLoc
sourcefn clone(&self) -> WellFormedLoc
fn clone(&self) -> WellFormedLoc
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
sourceimpl Debug for WellFormedLoc
impl Debug for WellFormedLoc
sourceimpl Hash for WellFormedLoc
impl Hash for WellFormedLoc
sourceimpl<'__ctx> HashStable<StableHashingContext<'__ctx>> for WellFormedLoc
impl<'__ctx> HashStable<StableHashingContext<'__ctx>> for WellFormedLoc
fn hash_stable(
&self,
__hcx: &mut StableHashingContext<'__ctx>,
__hasher: &mut StableHasher
)
sourceimpl<'tcx> Lift<'tcx> for WellFormedLoc
impl<'tcx> Lift<'tcx> for WellFormedLoc
type Lifted = WellFormedLoc
fn lift_to_tcx(self, _: TyCtxt<'tcx>) -> Option<Self>
sourceimpl PartialEq<WellFormedLoc> for WellFormedLoc
impl PartialEq<WellFormedLoc> for WellFormedLoc
sourcefn eq(&self, other: &WellFormedLoc) -> bool
fn eq(&self, other: &WellFormedLoc) -> bool
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
sourcefn ne(&self, other: &WellFormedLoc) -> bool
fn ne(&self, other: &WellFormedLoc) -> bool
This method tests for !=
.
impl Copy for WellFormedLoc
impl Eq for WellFormedLoc
impl StructuralEq for WellFormedLoc
impl StructuralPartialEq for WellFormedLoc
Auto Trait Implementations
impl RefUnwindSafe for WellFormedLoc
impl Send for WellFormedLoc
impl Sync for WellFormedLoc
impl Unpin for WellFormedLoc
impl UnwindSafe for WellFormedLoc
Blanket Implementations
sourceimpl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T where
T: Copy,
impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T where
T: Copy,
fn allocate_on(self, arena: &'a Arena<'tcx>) -> &'a mut T
fn allocate_from_iter(
arena: &'a Arena<'tcx>,
iter: impl IntoIterator<Item = T>
) -> &'a mut [T]ⓘNotable traits for &[u8]impl<'_> Read for &[u8]impl<'_> Write for &mut [u8]
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<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,
default fn fingerprint_style() -> FingerprintStyle
sourcedefault fn to_fingerprint(&self, tcx: Ctxt) -> Fingerprint
default fn to_fingerprint(&self, tcx: Ctxt) -> 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). Read more
default fn to_debug_str(&self, Ctxt) -> String
sourcedefault fn recover(Ctxt, &DepNode<<Ctxt as DepContext>::DepKind>) -> Option<T>
default fn recover(Ctxt, &DepNode<<Ctxt as DepContext>::DepKind>) -> 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. Read more
sourceimpl<T, R> InternIteratorElement<T, R> for T
impl<T, R> InternIteratorElement<T, R> for T
type Output = R
fn intern_with<I, F>(
iter: I,
f: F
) -> <T as InternIteratorElement<T, R>>::Output where
I: Iterator<Item = T>,
F: FnOnce(&[T]) -> R,
sourceimpl<T> MaybeResult<T> for T
impl<T> MaybeResult<T> for T
impl<'a, T> Captures<'a> for T where
T: ?Sized,
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
Size for each variant:
Ty
: 6 bytesParam
: 6 bytes