Enum rustc_infer::infer::region_constraints::UndoLog
source · pub(crate) enum UndoLog<'tcx> {
AddVar(RegionVid),
AddConstraint(Constraint<'tcx>),
AddVerify(usize),
AddGiven(Region<'tcx>, RegionVid),
AddCombination(CombineMapType, TwoRegions<'tcx>),
}
Variants
AddVar(RegionVid)
We added RegionVid
.
AddConstraint(Constraint<'tcx>)
We added the given constraint
.
AddVerify(usize)
We added the given verify
.
AddGiven(Region<'tcx>, RegionVid)
We added the given given
.
AddCombination(CombineMapType, TwoRegions<'tcx>)
We added a GLB/LUB “combination variable”.
Trait Implementations
sourceimpl<'tcx> PartialEq<UndoLog<'tcx>> for UndoLog<'tcx>
impl<'tcx> PartialEq<UndoLog<'tcx>> for UndoLog<'tcx>
sourceimpl<'tcx> Rollback<UndoLog<'tcx>> for RegionConstraintStorage<'tcx>
impl<'tcx> Rollback<UndoLog<'tcx>> for RegionConstraintStorage<'tcx>
impl<'tcx> Copy for UndoLog<'tcx>
impl<'tcx> StructuralPartialEq for UndoLog<'tcx>
Auto Trait Implementations
impl<'tcx> RefUnwindSafe for UndoLog<'tcx>
impl<'tcx> Send for UndoLog<'tcx>
impl<'tcx> Sync for UndoLog<'tcx>
impl<'tcx> Unpin for UndoLog<'tcx>
impl<'tcx> UnwindSafe for UndoLog<'tcx>
Blanket Implementations
sourceimpl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere
T: Copy,
impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere
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 Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
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
impl<'a, T> Captures<'a> for Twhere
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: 32 bytes
Size for each variant:
AddVar
: 7 bytesAddConstraint
: 31 bytesAddVerify
: 15 bytesAddGiven
: 15 bytesAddCombination
: 23 bytes