Enum rustc_middle::ty::closure::ClosureKind[][src]

pub enum ClosureKind {
    Fn,
    FnMut,
    FnOnce,
}

Represents the various closure traits in the language. This will determine the type of the environment (self, in the desugaring) argument that the closure expects.

You can get the environment type of a closure using tcx.closure_env_ty().

Variants

Fn
FnMut
FnOnce

Implementations

impl<'tcx> ClosureKind[src]

pub const LATTICE_BOTTOM: ClosureKind[src]

pub fn extends(self, other: ClosureKind) -> bool[src]

Returns true if a type that impls this closure kind must also implement other.

pub fn to_ty(self, tcx: TyCtxt<'tcx>) -> Ty<'tcx>[src]

Returns the representative scalar type for this closure kind. See TyS::to_opt_closure_kind for more details.

Trait Implementations

impl Clone for ClosureKind[src]

fn clone(&self) -> ClosureKind[src]

Returns a copy of the value. Read more

fn clone_from(&mut self, source: &Self)1.0.0[src]

Performs copy-assignment from source. Read more

impl Debug for ClosureKind[src]

fn fmt(&self, f: &mut Formatter<'_>) -> Result[src]

Formats the value using the given formatter. Read more

impl<'tcx, __D: TyDecoder<'tcx>> Decodable<__D> for ClosureKind[src]

fn decode(__decoder: &mut __D) -> Result<Self, <__D as Decoder>::Error>[src]

impl Display for ClosureKind[src]

fn fmt(&self, f: &mut Formatter<'_>) -> Result[src]

Formats the value using the given formatter. Read more

impl<'tcx, __E: TyEncoder<'tcx>> Encodable<__E> for ClosureKind[src]

fn encode(&self, __encoder: &mut __E) -> Result<(), <__E as Encoder>::Error>[src]

impl Hash for ClosureKind[src]

fn hash<__H: Hasher>(&self, state: &mut __H)[src]

Feeds this value into the given Hasher. Read more

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

Feeds a slice of this type into the given Hasher. Read more

impl<'__ctx> HashStable<StableHashingContext<'__ctx>> for ClosureKind[src]

fn hash_stable(
    &self,
    __hcx: &mut StableHashingContext<'__ctx>,
    __hasher: &mut StableHasher
)
[src]

impl<'tcx> Lift<'tcx> for ClosureKind[src]

type Lifted = Self

fn lift_to_tcx(self, _: TyCtxt<'tcx>) -> Option<Self>[src]

impl Ord for ClosureKind[src]

fn cmp(&self, other: &ClosureKind) -> Ordering[src]

This method returns an Ordering between self and other. Read more

#[must_use]
fn max(self, other: Self) -> Self
1.21.0[src]

Compares and returns the maximum of two values. Read more

#[must_use]
fn min(self, other: Self) -> Self
1.21.0[src]

Compares and returns the minimum of two values. Read more

#[must_use]
fn clamp(self, min: Self, max: Self) -> Self
1.50.0[src]

Restrict a value to a certain interval. Read more

impl PartialEq<ClosureKind> for ClosureKind[src]

fn eq(&self, other: &ClosureKind) -> bool[src]

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

#[must_use]
fn ne(&self, other: &Rhs) -> bool
1.0.0[src]

This method tests for !=.

impl PartialOrd<ClosureKind> for ClosureKind[src]

fn partial_cmp(&self, other: &ClosureKind) -> Option<Ordering>[src]

This method returns an ordering between self and other values if one exists. Read more

#[must_use]
fn lt(&self, other: &Rhs) -> bool
1.0.0[src]

This method tests less than (for self and other) and is used by the < operator. Read more

#[must_use]
fn le(&self, other: &Rhs) -> bool
1.0.0[src]

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more

#[must_use]
fn gt(&self, other: &Rhs) -> bool
1.0.0[src]

This method tests greater than (for self and other) and is used by the > operator. Read more

#[must_use]
fn ge(&self, other: &Rhs) -> bool
1.0.0[src]

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more

impl<'tcx, P: PrettyPrinter<'tcx>> Print<'tcx, P> for ClosureKind[src]

type Output = P

type Error = Error

fn print(&self, cx: P) -> Result<Self::Output, Self::Error>[src]

impl<'tcx> TypeFoldable<'tcx> for ClosureKind[src]

fn super_fold_with<F: TypeFolder<'tcx>>(self, _: &mut F) -> ClosureKind[src]

fn super_visit_with<F: TypeVisitor<'tcx>>(
    &self,
    _: &mut F
) -> ControlFlow<F::BreakTy>
[src]

fn fold_with<F: TypeFolder<'tcx>>(self, folder: &mut F) -> Self[src]

fn visit_with<V: TypeVisitor<'tcx>>(
    &self,
    visitor: &mut V
) -> ControlFlow<V::BreakTy>
[src]

fn has_vars_bound_at_or_above(&self, binder: DebruijnIndex) -> bool[src]

Returns true if self has any late-bound regions that are either bound by binder or bound by some binder outside of binder. If binder is ty::INNERMOST, this indicates whether there are any late-bound regions that appear free. Read more

fn has_vars_bound_above(&self, binder: DebruijnIndex) -> bool[src]

Returns true if this self has any regions that escape binder (and hence are not bound by it). Read more

fn has_escaping_bound_vars(&self) -> bool[src]

fn has_type_flags(&self, flags: TypeFlags) -> bool[src]

fn has_projections(&self) -> bool[src]

fn has_opaque_types(&self) -> bool[src]

fn references_error(&self) -> bool[src]

fn has_param_types_or_consts(&self) -> bool[src]

fn has_infer_regions(&self) -> bool[src]

fn has_infer_types(&self) -> bool[src]

fn has_infer_types_or_consts(&self) -> bool[src]

fn needs_infer(&self) -> bool[src]

fn has_placeholders(&self) -> bool[src]

fn needs_subst(&self) -> bool[src]

fn has_free_regions(&self) -> bool[src]

“Free” regions in this context means that it has any region that is not (a) erased or (b) late-bound. Read more

fn has_erased_regions(&self) -> bool[src]

fn has_erasable_regions(&self) -> bool[src]

True if there are any un-erased free regions.

fn is_global(&self) -> bool[src]

Indicates whether this value references only ‘global’ generic parameters that are the same regardless of what fn we are in. This is used for caching. Read more

fn has_late_bound_regions(&self) -> bool[src]

True if there are any late-bound regions

fn still_further_specializable(&self) -> bool[src]

Indicates whether this value still has parameters/placeholders/inference variables which could be replaced later, in a way that would change the results of impl specialization. Read more

impl Copy for ClosureKind[src]

impl Eq for ClosureKind[src]

impl StructuralEq for ClosureKind[src]

impl StructuralPartialEq for ClosureKind[src]

Auto Trait Implementations

impl RefUnwindSafe for ClosureKind

impl Send for ClosureKind

impl Sync for ClosureKind

impl Unpin for ClosureKind

impl UnwindSafe for ClosureKind

Blanket Implementations

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

pub fn type_id(&self) -> TypeId[src]

Gets the TypeId of self. Read more

impl<'tcx, T> ArenaAllocatable<'tcx, ()> for T where
    T: Copy
[src]

pub fn allocate_on(Self, &'a Arena<'tcx>) -> &'a mut T[src]

pub fn allocate_from_iter(
    &'a Arena<'tcx>,
    impl IntoIterator<Item = T>
) -> &'a mut [T]

Notable traits for &'_ [u8]

impl<'_> Read for &'_ [u8]impl<'_> Write for &'_ mut [u8]
[src]

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

pub fn borrow(&self) -> &T[src]

Immutably borrows from an owned value. Read more

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

pub fn borrow_mut(&mut self) -> &mut T[src]

Mutably borrows from an owned value. Read more

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

pub fn from(t: T) -> T[src]

Performs the conversion.

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

pub fn into(self) -> U[src]

Performs the conversion.

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

type Error = !

pub fn from(Result<T, <T as MaybeResult<T>>::Error>) -> T[src]

pub fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>[src]

impl<'tcx, T> Subst<'tcx> for T where
    T: TypeFoldable<'tcx>, 
[src]

pub fn subst_spanned(Self, TyCtxt<'tcx>, &[GenericArg<'tcx>], Option<Span>) -> T[src]

fn subst(self, tcx: TyCtxt<'tcx>, substs: &[GenericArg<'tcx>]) -> Self[src]

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

type Owned = T

The resulting type after obtaining ownership.

pub fn to_owned(&self) -> T[src]

Creates owned data from borrowed data, usually by cloning. Read more

pub fn clone_into(&self, target: &mut T)[src]

🔬 This is a nightly-only experimental API. (toowned_clone_into)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T> ToString for T where
    T: Display + ?Sized
[src]

pub default fn to_string(&self) -> String[src]

Converts the given value to a String. Read more

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.

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]

Performs the conversion.

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.

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]

Performs the conversion.

impl<T> WithConstness for T[src]

fn with_constness(self, constness: Constness) -> ConstnessAnd<Self>[src]

fn with_const(self) -> ConstnessAnd<Self>[src]

fn without_const(self) -> ConstnessAnd<Self>[src]

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