Trait rustc::ty::relate::TypeRelation [−] [src]

pub trait TypeRelation<'a, 'gcx: 'a + 'tcx, 'tcx: 'a>: Sized {
    fn tcx(&self) -> TyCtxt<'a, 'gcx, 'tcx>;
    fn tag(&self) -> &'static str;
    fn a_is_expected(&self) -> bool;
    fn relate_with_variance<T: Relate<'tcx>>(&mut self, variance: Variance, a: &T, b: &T) -> RelateResult<'tcx, T>;
    fn tys(&mut self, a: Ty<'tcx>, b: Ty<'tcx>) -> RelateResult<'tcx, Ty<'tcx>>;
    fn regions(&mut self, a: Region, b: Region) -> RelateResult<'tcx, Region>;
    fn binders<T>(&mut self, a: &Binder<T>, b: &Binder<T>) -> RelateResult<'tcx, Binder<T>> where T: Relate<'tcx>;

    fn with_cause<F, R>(&mut self, _cause: Cause, f: F) -> R where F: FnOnce(&mut Self) -> R { ... }
    fn relate<T: Relate<'tcx>>(&mut self, a: &T, b: &T) -> RelateResult<'tcx, T> { ... }
    fn relate_zip<T: Relate<'tcx>>(&mut self, a: &[T], b: &[T]) -> RelateResult<'tcx, Vec<T>> { ... }
}
Unstable (rustc_private)

Required Methods

fn tcx(&self) -> TyCtxt<'a, 'gcx, 'tcx>

Unstable (rustc_private)

fn tag(&self) -> &'static str

Unstable (rustc_private)

Returns a static string we can use for printouts.

fn a_is_expected(&self) -> bool

Unstable (rustc_private)

Returns true if the value a is the "expected" type in the relation. Just affects error messages.

fn relate_with_variance<T: Relate<'tcx>>(&mut self, variance: Variance, a: &T, b: &T) -> RelateResult<'tcx, T>

Unstable (rustc_private)

Switch variance for the purpose of relating a and b.

fn tys(&mut self, a: Ty<'tcx>, b: Ty<'tcx>) -> RelateResult<'tcx, Ty<'tcx>>

Unstable (rustc_private)

fn regions(&mut self, a: Region, b: Region) -> RelateResult<'tcx, Region>

Unstable (rustc_private)

fn binders<T>(&mut self, a: &Binder<T>, b: &Binder<T>) -> RelateResult<'tcx, Binder<T>> where T: Relate<'tcx>

Unstable (rustc_private)

Provided Methods

fn with_cause<F, R>(&mut self, _cause: Cause, f: F) -> R where F: FnOnce(&mut Self) -> R

Unstable (rustc_private)

fn relate<T: Relate<'tcx>>(&mut self, a: &T, b: &T) -> RelateResult<'tcx, T>

Unstable (rustc_private)

Generic relation routine suitable for most anything.

fn relate_zip<T: Relate<'tcx>>(&mut self, a: &[T], b: &[T]) -> RelateResult<'tcx, Vec<T>>

Unstable (rustc_private)

Relete elements of two slices pairwise.

Implementors