Struct rustc_trait_selection::infer::canonical::OriginalQueryValues
source · [−]pub struct OriginalQueryValues<'tcx> {
pub universe_map: SmallVec<[UniverseIndex; 4]>,
pub var_values: SmallVec<[GenericArg<'tcx>; 8]>,
}Expand description
When we canonicalize a value to form a query, we wind up replacing various parts of it with canonical variables. This struct stores those replaced bits to remember for when we process the query result.
Fields
universe_map: SmallVec<[UniverseIndex; 4]>Map from the universes that appear in the query to the universes in the caller context. For the time being, we only ever put ROOT values into the query, so this map is very simple.
var_values: SmallVec<[GenericArg<'tcx>; 8]>This is equivalent to CanonicalVarValues, but using a
SmallVec yields a significant performance win.
Auto Trait Implementations
impl<'tcx> !RefUnwindSafe for OriginalQueryValues<'tcx>
impl<'tcx> Send for OriginalQueryValues<'tcx>
impl<'tcx> Sync for OriginalQueryValues<'tcx>
impl<'tcx> Unpin for OriginalQueryValues<'tcx>
impl<'tcx> !UnwindSafe for OriginalQueryValues<'tcx>
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcepub fn borrow_mut(&mut self) -> &mut T
pub fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcepub fn to_owned(&self) -> T
pub fn to_owned(&self) -> T
Creates owned data from borrowed data, usually by cloning. Read more
sourcepub fn clone_into(&self, target: &mut T)
pub fn clone_into(&self, target: &mut T)
toowned_clone_into)Uses borrowed data to replace owned data, usually by cloning. 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: 96 bytes