Struct rustc::ty::ParamEnvAnd

pub struct ParamEnvAnd<'tcx, T> {
    pub param_env: ParamEnv<'tcx>,
    pub value: T,
}

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Fields

param_env: ParamEnv<'tcx>

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value: T

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Methods

impl<'tcx, T> ParamEnvAnd<'tcx, T>

pub fn into_parts(self) -> (ParamEnv<'tcx>, T)

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Trait Implementations

impl<'gcx: 'tcx, 'tcx, Q> TypeOp<'gcx, 'tcx> for ParamEnvAnd<'tcx, Q> where     Q: QueryTypeOp<'gcx, 'tcx>,

type Output = Q::QueryResult

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fn fully_perform(     self,     infcx: &InferCtxt<'_, 'gcx, 'tcx> ) -> Fallible<(Self::Output, Option<Rc<Vec<QueryRegionConstraint<'tcx>>>>)>

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Processes the operation and all resulting obligations, returning the final result along with any region constraints (they will be given over to the NLL region solver).

impl<'tcx, T: Key> Key for ParamEnvAnd<'tcx, T>

fn query_crate(&self) -> CrateNum

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Given an instance of this key, what crate is it referring to? This is used to find the provider.

fn default_span(&self, tcx: TyCtxt) -> Span

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In the event that a cycle occurs, if no explicit span has been given for a query with key self, what span should we use?

impl<'a, 'tcx, T: Lift<'tcx>> Lift<'tcx> for ParamEnvAnd<'a, T>

type Lifted = ParamEnvAnd<'tcx, T::Lifted>

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fn lift_to_tcx<'b, 'gcx>(     &self,     tcx: TyCtxt<'b, 'gcx, 'tcx> ) -> Option<Self::Lifted>

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impl<'tcx, T> TypeFoldable<'tcx> for ParamEnvAnd<'tcx, T> where     T: TypeFoldable<'tcx>,

fn super_fold_with<'gcx: 'tcx, V: TypeFolder<'gcx, 'tcx>>(     &self,     folder: &mut V ) -> Self

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fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool

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fn fold_with<'gcx: 'tcx, F: TypeFolder<'gcx, 'tcx>>(     &self,     folder: &mut F ) -> Self

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fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool

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fn has_regions_bound_at_or_above(&self, binder: DebruijnIndex) -> bool

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True if self has any late-bound regions that are either bound by binder or bound by some binder outside of binder. If binder is ty::INNERMOST, this indicates whether there are any late-bound regions that appear free.

fn has_regions_bound_above(&self, binder: DebruijnIndex) -> bool

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True if this self has any regions that escape binder (and hence are not bound by it).

fn has_escaping_regions(&self) -> bool

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fn has_type_flags(&self, flags: TypeFlags) -> bool

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fn has_projections(&self) -> bool

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fn references_error(&self) -> bool

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fn has_param_types(&self) -> bool

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fn has_self_ty(&self) -> bool

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fn has_infer_types(&self) -> bool

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fn needs_infer(&self) -> bool

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fn has_skol(&self) -> bool

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fn needs_subst(&self) -> bool

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fn has_re_skol(&self) -> bool

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fn has_closure_types(&self) -> bool

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fn has_free_regions(&self) -> bool

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"Free" regions in this context means that it has any region that is not (a) erased or (b) late-bound.

fn has_erasable_regions(&self) -> bool

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True if there any any un-erased free regions.

fn is_global(&self) -> bool

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Indicates whether this value references only 'global' types/lifetimes that are the same regardless of what fn we are in. This is used for caching.

fn has_late_bound_regions(&self) -> bool

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True if there are any late-bound regions

fn visit_tys_shallow(     &self,     visit: impl FnMut(Ty<'tcx>) -> bool ) -> bool

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A visitor that does not recurse into types, works like fn walk_shallow in Ty.

impl<'tcx, T: Copy> Copy for ParamEnvAnd<'tcx, T>

impl<'tcx, T: Clone> Clone for ParamEnvAnd<'tcx, T>

fn clone(&self) -> ParamEnvAnd<'tcx, T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'tcx, T: Debug> Debug for ParamEnvAnd<'tcx, T>

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl<'tcx, T: PartialEq> PartialEq for ParamEnvAnd<'tcx, T>

fn eq(&self, other: &ParamEnvAnd<'tcx, T>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &ParamEnvAnd<'tcx, T>) -> bool

This method tests for !=.

impl<'tcx, T: Eq> Eq for ParamEnvAnd<'tcx, T>

fn assert_receiver_is_total_eq(&self)

impl<'tcx, T: Hash> Hash for ParamEnvAnd<'tcx, T>

fn hash<__HT: Hasher>(&self, state: &mut __HT)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where     H: Hasher,

Feeds a slice of this type into the given [Hasher].

impl<'a, 'gcx, T> HashStable<StableHashingContext<'a>> for ParamEnvAnd<'gcx, T> where     T: HashStable<StableHashingContext<'a>>,

fn hash_stable<W: StableHasherResult>(     &self,     hcx: &mut StableHashingContext<'a>,     hasher: &mut StableHasher<W> )

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