Struct rustc::ty::ProjectionPredicate [−] [src]

pub struct ProjectionPredicate<'tcx> {
    pub projection_ty: ProjectionTy<'tcx>,
    pub ty: Ty<'tcx>,
}
Unstable (rustc_private)

This kind of predicate has no direct correspondent in the syntax, but it roughly corresponds to the syntactic forms:

  1. T : TraitRef<..., Item=Type>
  2. <T as TraitRef<...>>::Item == Type (NYI)

In particular, form #1 is "desugared" to the combination of a normal trait predicate (T : TraitRef<...>) and one of these predicates. Form #2 is a broader form in that it also permits equality between arbitrary types. Processing an instance of Form

2 eventually yields one of these ProjectionPredicate

instances to normalize the LHS.

Fields

projection_ty: ProjectionTy<'tcx>
Unstable (rustc_private)
ty: Ty<'tcx>
Unstable (rustc_private)

Trait Implementations

impl<'tcx> Relate<'tcx> for ProjectionPredicate<'tcx>
[src]

fn relate<'a, 'gcx, R>(relation: &mut R, a: &ProjectionPredicate<'tcx>, b: &ProjectionPredicate<'tcx>) -> RelateResult<'tcx, ProjectionPredicate<'tcx>> where R: TypeRelation<'a, 'gcx, 'tcx>, 'gcx: 'a + 'tcx, 'tcx: 'a

impl<'a, 'tcx> Lift<'tcx> for ProjectionPredicate<'a>
[src]

type Lifted = ProjectionPredicate<'tcx>

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

impl<'tcx> TypeFoldable<'tcx> for ProjectionPredicate<'tcx>
[src]

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

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

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

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

fn has_regions_escaping_depth(&self, depth: u32) -> bool

fn has_escaping_regions(&self) -> bool

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

fn has_projection_types(&self) -> bool

fn references_error(&self) -> bool

fn has_param_types(&self) -> bool

fn has_self_ty(&self) -> bool

fn has_infer_types(&self) -> bool

fn needs_infer(&self) -> bool

fn needs_subst(&self) -> bool

fn has_closure_types(&self) -> bool

fn has_erasable_regions(&self) -> bool

fn is_global(&self) -> bool

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. Errs on the side of returning false. Read more

impl<'tcx> Debug for ProjectionPredicate<'tcx>
[src]

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

Formats the value using the given formatter.

impl<'tcx> Display for ProjectionPredicate<'tcx>
[src]

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

Formats the value using the given formatter.

Derived Implementations

impl<'tcx> Hash for ProjectionPredicate<'tcx>
[src]

fn hash<__H: Hasher>(&self, __arg_0: &mut __H)

Feeds this value into the state given, updating the hasher as necessary.

fn hash_slice<H>(data: &[Self], state: &mut H) where H: Hasher
1.3.0

Feeds a slice of this type into the state provided.

impl<'tcx> Eq for ProjectionPredicate<'tcx>
[src]

impl<'tcx> PartialEq for ProjectionPredicate<'tcx>
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fn eq(&self, __arg_0: &ProjectionPredicate<'tcx>) -> bool

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

fn ne(&self, __arg_0: &ProjectionPredicate<'tcx>) -> bool

This method tests for !=.

impl<'tcx> Clone for ProjectionPredicate<'tcx>
[src]

fn clone(&self) -> ProjectionPredicate<'tcx>

Returns a copy of the value. Read more

fn clone_from(&mut self, source: &Self)
1.0.0

Performs copy-assignment from source. Read more