Enum InferenceVarBounds

Source

pub enum InferenceVarBounds<'db> {
    Perm {
        lower: Option<(RedPerm<'db>, ArcOrElse<'db>)>,
        upper: Option<(RedPerm<'db>, ArcOrElse<'db>)>,
    },
    Ty {
        perm: InferVarIndex,
        lower: Option<(RedTy<'db>, ArcOrElse<'db>)>,
        upper: Option<(RedTy<'db>, ArcOrElse<'db>)>,
    },
}

Variants§

§

Perm

Bounds for a permission:

The inferred permission ?P must meet

L <: ?P for each L in lower
?P <: U for each U in upper

This in turn implies that L <: U for all L in lower, U in upper.

Fields

§lower: Option<(RedPerm<'db>, ArcOrElse<'db>)>

§upper: Option<(RedPerm<'db>, ArcOrElse<'db>)>

§

Ty

Bounds for a type:

The inferred type ?T must

have a red-perm of perm (we always create an associated permission variable for every type variable)
have a red-ty R where lower <= R
have a red-ty R where R <= upper

Fields

§perm: InferVarIndex

§lower: Option<(RedTy<'db>, ArcOrElse<'db>)>

§upper: Option<(RedTy<'db>, ArcOrElse<'db>)>

Auto Trait Implementations§

§

impl<'db> !UnwindSafe for InferenceVarBounds<'db>

Blanket Implementations§

Source §

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

Source §

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

Source §

impl<T> Borrow<T> for T
where T: ?Sized,

Source §

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

Source §

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source §

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

Source §

impl<T> From<T> for T

Source §

fn from(t: T) -> T

Returns the argument unchanged.

§

impl<T> Instrument for T

§

fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more

§

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

Source §

impl<T, U> Into for T
where U: From<T>,

Source §

fn into(self) -> U

Calls U::from(self).

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

Source §

impl<T> IntoEither for T

Source §

fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

Source §

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

§