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 Ord for ClosureKind
impl Ord for ClosureKind
source§fn cmp(&self, other: &ClosureKind) -> Ordering
fn cmp(&self, other: &ClosureKind) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
Compares and returns the maximum of two values. Read more
source§impl PartialEq for ClosureKind
impl PartialEq for ClosureKind
source§fn eq(&self, other: &ClosureKind) -> bool
fn eq(&self, other: &ClosureKind) -> bool
This method tests for
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for ClosureKind
impl PartialOrd for ClosureKind
source§fn partial_cmp(&self, other: &ClosureKind) -> Option<Ordering>
fn partial_cmp(&self, other: &ClosureKind) -> Option<Ordering>
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
This method tests less than or equal to (for
self
and other
) and is used by the <=
operator. Read moreimpl Copy for ClosureKind
impl Eq for ClosureKind
impl StructuralPartialEq for ClosureKind
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§
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, R> CollectAndApply<T, R> for T
impl<T, R> CollectAndApply<T, R> for T
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