Struct rustc_trait_selection::infer::canonical::QueryResponse

pub struct QueryResponse<'tcx, R> {
    pub var_values: CanonicalVarValues<TyCtxt<'tcx>>,
    pub region_constraints: QueryRegionConstraints<'tcx>,
    pub certainty: Certainty,
    pub opaque_types: Vec<(OpaqueTypeKey<TyCtxt<'tcx>>, Ty<'tcx>)>,
    pub value: R,
}

After we execute a query with a canonicalized key, we get back a Canonical<QueryResponse<..>>. You can use instantiate_query_result to access the data in this result.

Fields

var_values: CanonicalVarValues<TyCtxt<'tcx>>

region_constraints: QueryRegionConstraints<'tcx>

certainty: Certainty

opaque_types: Vec<(OpaqueTypeKey<TyCtxt<'tcx>>, Ty<'tcx>)>

value: R

Implementations

impl<'tcx, R> QueryResponse<'tcx, R>

pub fn is_proven(&self) -> bool

Trait Implementations

impl<'tcx, R> Clone for QueryResponse<'tcx, R>

where R: Clone,

fn clone(&self) -> QueryResponse<'tcx, R>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'tcx, R> Debug for QueryResponse<'tcx, R>

where R: Debug,

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<'tcx, '__ctx, R> HashStable<StableHashingContext<'__ctx>> for QueryResponse<'tcx, R>

where R: HashStable<StableHashingContext<'__ctx>>,

fn hash_stable( &self, __hcx: &mut StableHashingContext<'__ctx>, __hasher: &mut StableHasher<SipHasher128>, )

impl<'tcx, R> TypeFoldable<TyCtxt<'tcx>> for QueryResponse<'tcx, R>

where R: TypeFoldable<TyCtxt<'tcx>>,

fn try_fold_with<__F>( self, __folder: &mut __F, ) -> Result<QueryResponse<'tcx, R>, <__F as FallibleTypeFolder<TyCtxt<'tcx>>>::Error>

where __F: FallibleTypeFolder<TyCtxt<'tcx>>,

The entry point for folding. To fold a value t with a folder f call: t.try_fold_with(f).

fn fold_with<F>(self, folder: &mut F) -> Self

where F: TypeFolder<I>,

A convenient alternative to try_fold_with for use with infallible folders. Do not override this method, to ensure coherence with try_fold_with.

impl<'tcx, R> TypeVisitable<TyCtxt<'tcx>> for QueryResponse<'tcx, R>

where R: TypeVisitable<TyCtxt<'tcx>>,

fn visit_with<__V>( &self, __visitor: &mut __V, ) -> <__V as TypeVisitor<TyCtxt<'tcx>>>::Result

where __V: TypeVisitor<TyCtxt<'tcx>>,

The entry point for visiting. To visit a value t with a visitor v call: t.visit_with(v).

Layout

Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.