Struct rustc_middle::traits::query::DtorckConstraint [−][src]
pub struct DtorckConstraint<'tcx> {
pub outlives: Vec<GenericArg<'tcx>>,
pub dtorck_types: Vec<Ty<'tcx>>,
pub overflows: Vec<Ty<'tcx>>,
}
Expand description
A set of constraints that need to be satisfied in order for a type to be valid for destruction.
Fields
outlives: Vec<GenericArg<'tcx>>
Types that are required to be alive in order for this type to be valid for destruction.
dtorck_types: Vec<Ty<'tcx>>
Types that could not be resolved: projections and params.
overflows: Vec<Ty<'tcx>>
If, during the computation of the dtorck constraint, we overflow, that gets recorded here. The caller is expected to report an error.
Implementations
Trait Implementations
Creates a value from an iterator. Read more
Auto Trait Implementations
impl<'tcx> !RefUnwindSafe for DtorckConstraint<'tcx>
impl<'tcx> !Send for DtorckConstraint<'tcx>
impl<'tcx> !Sync for DtorckConstraint<'tcx>
impl<'tcx> Unpin for DtorckConstraint<'tcx>
impl<'tcx> !UnwindSafe for DtorckConstraint<'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: 72 bytes