Enum rustc_type_ir::ClosureKind
source · pub enum ClosureKind {
Fn,
FnMut,
FnOnce,
}
Expand description
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§
Implementations§
source§impl ClosureKind
impl ClosureKind
sourcepub const LATTICE_BOTTOM: ClosureKind = ClosureKind::Fn
pub const LATTICE_BOTTOM: ClosureKind = ClosureKind::Fn
This is the initial value used when doing upvar inference.
pub const fn as_str(self) -> &'static str
sourcepub fn extends(self, other: ClosureKind) -> bool
pub fn extends(self, other: ClosureKind) -> bool
Returns true
if a type that impls this closure kind
must also implement other
.
Trait Implementations§
source§impl Clone for ClosureKind
impl Clone for ClosureKind
source§fn clone(&self) -> ClosureKind
fn clone(&self) -> ClosureKind
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moresource§impl Debug for ClosureKind
impl Debug for ClosureKind
source§impl<__D: SpanDecoder> Decodable<__D> for ClosureKind
impl<__D: SpanDecoder> Decodable<__D> for ClosureKind
source§impl Display for ClosureKind
impl Display for ClosureKind
source§impl<__E: SpanEncoder> Encodable<__E> for ClosureKind
impl<__E: SpanEncoder> Encodable<__E> for ClosureKind
source§impl Hash for ClosureKind
impl Hash for ClosureKind
source§impl<__CTX> HashStable<__CTX> for ClosureKind
impl<__CTX> HashStable<__CTX> for ClosureKind
fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)
source§impl PartialEq for ClosureKind
impl PartialEq for ClosureKind
impl Copy for ClosureKind
impl Eq for ClosureKind
impl StructuralPartialEq for ClosureKind
Auto Trait Implementations§
impl Freeze for ClosureKind
impl RefUnwindSafe for ClosureKind
impl Send for ClosureKind
impl Sync for ClosureKind
impl Unpin for ClosureKind
impl UnwindSafe for ClosureKind
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
🔬This is a nightly-only experimental API. (
clone_to_uninit
)source§impl<T, R> CollectAndApply<T, R> for T
impl<T, R> CollectAndApply<T, R> for T
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to
key
and return true
if they are equal.source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
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 moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
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 moresource§impl<I, T, U> Upcast<I, U> for Twhere
U: UpcastFrom<I, T>,
impl<I, T, U> Upcast<I, U> for Twhere
U: UpcastFrom<I, T>,
source§impl<I, T> UpcastFrom<I, T> for T
impl<I, T> UpcastFrom<I, T> for T
fn upcast_from(from: T, _tcx: I) -> T
source§impl<T> WithSubscriber for T
impl<T> WithSubscriber for T
source§fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
source§fn with_current_subscriber(self) -> WithDispatch<Self>
fn with_current_subscriber(self) -> WithDispatch<Self>
impl<'a, T> Captures<'a> for Twhere
T: ?Sized,
Layout§
Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...)
attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.
Size: 1 byte
Size for each variant:
Fn
: 0 bytesFnMut
: 0 bytesFnOnce
: 0 bytes