Enum rustc_middle::ty::closure::UpvarCapture

pub enum UpvarCapture {
    ByValue,
    ByRef(BorrowKind),
}

Information describing the capture of an upvar. This is computed during typeck, specifically by regionck.

Variants

ByValue

Upvar is captured by value. This is always true when the closure is labeled move, but can also be true in other cases depending on inference.

ByRef(BorrowKind)

Upvar is captured by reference.

Trait Implementations

impl Clone for UpvarCapture

fn clone(&self) -> UpvarCapture

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for UpvarCapture

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

Formats the value using the given formatter.

impl<__D: TyDecoder> Decodable<__D> for UpvarCapture

fn decode(__decoder: &mut __D) -> Self

impl<__E: TyEncoder> Encodable<__E> for UpvarCapture

fn encode(&self, __encoder: &mut __E)

impl<'__ctx> HashStable<StableHashingContext<'__ctx>> for UpvarCapture

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

impl PartialEq for UpvarCapture

fn eq(&self, other: &UpvarCapture) -> bool

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

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for UpvarCapture

fn try_fold_with<__F: FallibleTypeFolder<TyCtxt<'tcx>>>( self, __folder: &mut __F ) -> Result<Self, __F::Error>

The entry point for folding. To fold a value t with a folder f call: t.try_fold_with(f).

fn fold_with<F>(self, folder: &mut F) -> Self

where F: TypeFolder<I>,

A convenient alternative to try_fold_with for use with infallible folders. Do not override this method, to ensure coherence with try_fold_with.

impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for UpvarCapture

fn visit_with<__V: TypeVisitor<TyCtxt<'tcx>>>( &self, __visitor: &mut __V ) -> __V::Result

The entry point for visiting. To visit a value t with a visitor v call: t.visit_with(v).

impl Copy for UpvarCapture

impl StructuralPartialEq for UpvarCapture

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:

• ByValue: 0 bytes
• ByRef: 1 byte