Struct chalk_ir::SubtypeGoal

pub struct SubtypeGoal<I: Interner> {
    pub a: Ty<I>,
    pub b: Ty<I>,
}

Subtype goal: tries to prove that a is a subtype of b

Fields

a: Ty<I>

b: Ty<I>

Trait Implementations

impl<I: Interner> CastTo<Goal<I>> for SubtypeGoal<I>

pub fn cast_to(self, interner: &I) -> Goal<I>

Cast a value to type T.

impl<I: Clone + Interner> Clone for SubtypeGoal<I>

pub fn clone(&self) -> SubtypeGoal<I>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<I: Interner> Copy for SubtypeGoal<I> where
    I::InternedType: Copy, 

impl<I: Interner> Debug for SubtypeGoal<I>

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

Formats the value using the given formatter.

impl<I: Eq + Interner> Eq for SubtypeGoal<I>

impl<I: Interner> Fold<I> for SubtypeGoal<I>

type Result = SubtypeGoal<I>

The type of value that will be produced once folding is done. Typically this is Self, unless Self contains borrowed values, in which case owned values are produced (for example, one can fold over a &T value where T: Fold, in which case you get back a T, not a &T).

pub fn fold_with<'i>(
    self,
    folder: &mut dyn Folder<'i, I>,
    outer_binder: DebruijnIndex
) -> Fallible<Self::Result> where
    I: 'i, 

Apply the given folder folder to self; binders is the number of binders that are in scope when beginning the folder. Typically binders starts as 0, but is adjusted when we encounter Binders<T> in the IR or other similar constructs.

impl<I: Hash + Interner> Hash for SubtypeGoal<I>

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

Feeds this value into the given Hasher.

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

Feeds a slice of this type into the given Hasher.

impl<I: PartialEq + Interner> PartialEq<SubtypeGoal<I>> for SubtypeGoal<I>

pub fn eq(&self, other: &SubtypeGoal<I>) -> bool

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

pub fn ne(&self, other: &SubtypeGoal<I>) -> bool

This method tests for !=.

impl<I: Interner> StructuralEq for SubtypeGoal<I>

impl<I: Interner> StructuralPartialEq for SubtypeGoal<I>

impl<I: Interner> Visit<I> for SubtypeGoal<I>

pub fn visit_with<'i, B>(
    &self,
    visitor: &mut dyn Visitor<'i, I, BreakTy = B>,
    outer_binder: DebruijnIndex
) -> ControlFlow<B> where
    I: 'i, 

Apply the given visitor visitor to self; binders is the number of binders that are in scope when beginning the visitor. Typically binders starts as 0, but is adjusted when we encounter Binders<T> in the IR or other similar constructs.

impl<I: Interner> Zip<I> for SubtypeGoal<I>

pub fn zip_with<'i, Z: Zipper<'i, I>>(
    zipper: &mut Z,
    variance: Variance,
    a: &Self,
    b: &Self
) -> Fallible<()> where
    I: 'i, 

Uses the zipper to walk through two values, ensuring that they match.