Enum rustc_trait_selection::traits::project::ProjectAndUnifyResult

source · [−]
pub(super) enum ProjectAndUnifyResult<'tcx> {
    Holds(Vec<PredicateObligation<'tcx>>),
    FailedNormalization,
    Recursive,
    MismatchedProjectionTypes(MismatchedProjectionTypes<'tcx>),
}
Expand description

Takes the place of a Result< Result<Option<Vec<PredicateObligation<’tcx>>>, InProgress>, MismatchedProjectionTypes<’tcx>, >

Variants

Holds(Vec<PredicateObligation<'tcx>>)

FailedNormalization

Recursive

MismatchedProjectionTypes(MismatchedProjectionTypes<'tcx>)

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.

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: 40 bytes

Size for each variant:

  • Holds: 24 bytes
  • FailedNormalization: 0 bytes
  • Recursive: 0 bytes
  • MismatchedProjectionTypes: 32 bytes