Enum rustc_trait_selection::traits::project::ProjectionCandidate

enum ProjectionCandidate<'tcx> {
    ParamEnv(PolyProjectionPredicate<'tcx>),
    TraitDef(PolyProjectionPredicate<'tcx>),
    Object(PolyProjectionPredicate<'tcx>),
    Select(Selection<'tcx>),
    ImplTraitInTrait(ImplSourceUserDefinedData<'tcx, PredicateObligation<'tcx>>),
}

Variants

ParamEnv(PolyProjectionPredicate<'tcx>)

From a where-clause in the env or object type

TraitDef(PolyProjectionPredicate<'tcx>)

From the definition of Trait when you have something like <::B as Trait2>::C

Object(PolyProjectionPredicate<'tcx>)

Bounds specified on an object type

Select(Selection<'tcx>)

From an “impl” (or a “pseudo-impl” returned by select)

ImplTraitInTrait(ImplSourceUserDefinedData<'tcx, PredicateObligation<'tcx>>)

Trait Implementations

impl<'tcx> Debug for ProjectionCandidate<'tcx>

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

Formats the value using the given formatter.

impl<'tcx> PartialEq<ProjectionCandidate<'tcx>> for ProjectionCandidate<'tcx>

fn eq(&self, other: &ProjectionCandidate<'tcx>) -> bool

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

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'tcx> Eq for ProjectionCandidate<'tcx>

impl<'tcx> StructuralEq for ProjectionCandidate<'tcx>

impl<'tcx> StructuralPartialEq for ProjectionCandidate<'tcx>

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

Size for each variant:

• ParamEnv: 40 bytes
• TraitDef: 40 bytes
• Object: 40 bytes
• Select: 72 bytes
• ImplTraitInTrait: 48 bytes