pub enum RegionResolutionError<'tcx> {
ConcreteFailure(SubregionOrigin<'tcx>, Region<'tcx>, Region<'tcx>),
GenericBoundFailure(SubregionOrigin<'tcx>, GenericKind<'tcx>, Region<'tcx>),
SubSupConflict(RegionVid, RegionVariableOrigin, SubregionOrigin<'tcx>, Region<'tcx>, SubregionOrigin<'tcx>, Region<'tcx>, Vec<Span>),
UpperBoundUniverseConflict(RegionVid, RegionVariableOrigin, UniverseIndex, SubregionOrigin<'tcx>, Region<'tcx>),
}
Variants§
ConcreteFailure(SubregionOrigin<'tcx>, Region<'tcx>, Region<'tcx>)
ConcreteFailure(o, a, b)
:
o
requires that a <= b
, but this does not hold
GenericBoundFailure(SubregionOrigin<'tcx>, GenericKind<'tcx>, Region<'tcx>)
GenericBoundFailure(p, s, a)
:
The parameter/associated-type p
must be known to outlive the lifetime
a
(but none of the known bounds are sufficient).
SubSupConflict(RegionVid, RegionVariableOrigin, SubregionOrigin<'tcx>, Region<'tcx>, SubregionOrigin<'tcx>, Region<'tcx>, Vec<Span>)
SubSupConflict(v, v_origin, sub_origin, sub_r, sup_origin, sup_r)
:
Could not infer a value for v
(which has origin v_origin
)
because sub_r <= v
(due to sub_origin
) but v <= sup_r
(due to sup_origin
) and
sub_r <= sup_r
does not hold.
UpperBoundUniverseConflict(RegionVid, RegionVariableOrigin, UniverseIndex, SubregionOrigin<'tcx>, Region<'tcx>)
Indicates a 'b: 'a
constraint where 'a
is in a universe that
cannot name the placeholder 'b
.
Implementations§
source§impl<'tcx> RegionResolutionError<'tcx>
impl<'tcx> RegionResolutionError<'tcx>
pub fn origin(&self) -> &SubregionOrigin<'tcx>
Trait Implementations§
source§impl<'tcx> Clone for RegionResolutionError<'tcx>
impl<'tcx> Clone for RegionResolutionError<'tcx>
source§fn clone(&self) -> RegionResolutionError<'tcx>
fn clone(&self) -> RegionResolutionError<'tcx>
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moreAuto Trait Implementations§
impl<'tcx> !RefUnwindSafe for RegionResolutionError<'tcx>
impl<'tcx> !Send for RegionResolutionError<'tcx>
impl<'tcx> !Sync for RegionResolutionError<'tcx>
impl<'tcx> Unpin for RegionResolutionError<'tcx>
impl<'tcx> !UnwindSafe for RegionResolutionError<'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
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: 136 bytes
Size for each variant:
ConcreteFailure
: 88 bytesGenericBoundFailure
: 96 bytesSubSupConflict
: 136 bytesUpperBoundUniverseConflict
: 120 bytes