[−][src]Struct rustc_mir_build::build::matches::Ascription

pub(in build::matches) struct Ascription<'tcx> {
    span: Span,
    source: Place<'tcx>,
    user_ty: PatTyProj<'tcx>,
    variance: Variance,
}

Indicates that the type of source must be a subtype of the user-given type user_ty; this is basically a no-op but can influence region inference.

Fields

span: Spansource: Place<'tcx>user_ty: PatTyProj<'tcx>variance: Variance

Trait Implementations

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

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

Auto Trait Implementations

impl<'tcx> !RefUnwindSafe for Ascription<'tcx>

impl<'tcx> !Send for Ascription<'tcx>

impl<'tcx> !Sync for Ascription<'tcx>

impl<'tcx> Unpin for Ascription<'tcx>

impl<'tcx> !UnwindSafe for Ascription<'tcx>

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized, [src]

impl<T> Borrow<T> for T where
    T: ?Sized, [src]

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]

impl<'a, T> Captures<'a> for T where
    T: ?Sized, [src]

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, [src]

impl<T> ToOwned for T where
    T: Clone, [src]

type Owned = T

The resulting type after obtaining ownership.

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.