pub struct RegionConstraintData<'tcx> {
pub constraints: BTreeMap<Constraint<'tcx>, SubregionOrigin<'tcx>, Global>,
pub member_constraints: Vec<MemberConstraint<'tcx>, Global>,
pub verifys: Vec<Verify<'tcx>, Global>,
}
Expand description
The full set of region constraints gathered up by the collector. Describes constraints between the region variables and other regions, as well as other conditions that must be verified, or assumptions that can be made.
Fields§
§constraints: BTreeMap<Constraint<'tcx>, SubregionOrigin<'tcx>, Global>
Constraints of the form A <= B
, where either A
or B
can
be a region variable (or neither, as it happens).
member_constraints: Vec<MemberConstraint<'tcx>, Global>
Constraints of the form R0 member of [R1, ..., Rn]
, meaning that
R0
must be equal to one of the regions R1..Rn
. These occur
with impl Trait
quite frequently.
verifys: Vec<Verify<'tcx>, Global>
A “verify” is something that we need to verify after inference is done, but which does not directly affect inference in any way.
An example is a A <= B
where neither A
nor B
are
inference variables.
Auto Trait Implementations§
impl<'tcx> !RefUnwindSafe for RegionConstraintData<'tcx>
impl<'tcx> !Send for RegionConstraintData<'tcx>
impl<'tcx> !Sync for RegionConstraintData<'tcx>
impl<'tcx> Unpin for RegionConstraintData<'tcx>
impl<'tcx> !UnwindSafe for RegionConstraintData<'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: 72 bytes