Struct rustc_middle::mir::Constant

pub struct Constant<'tcx> {
    pub span: Span,
    pub user_ty: Option<UserTypeAnnotationIndex>,
    pub literal: ConstantKind<'tcx>,
}

Constants

Two constants are equal if they are the same constant. Note that this does not necessarily mean that they are == in Rust. In particular, one must be wary of NaN!

Fields

span: Span

user_ty: Option<UserTypeAnnotationIndex>

Optional user-given type: for something like collect::<Vec<_>>, this would be present and would indicate that Vec<_> was explicitly specified.

Needed for NLL to impose user-given type constraints.

literal: ConstantKind<'tcx>

Implementations

impl<'tcx> Constant<'tcx>

pub fn check_static_ptr(&self, tcx: TyCtxt<'_>) -> Option<DefId>

pub fn ty(&self) -> Ty<'tcx>

Trait Implementations

impl<'tcx> Clone for Constant<'tcx>

fn clone(&self) -> Constant<'tcx>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'tcx> Debug for Constant<'tcx>

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

Formats the value using the given formatter.

impl<'tcx, __D: TyDecoder<I = TyCtxt<'tcx>>> Decodable<__D> for Constant<'tcx>

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

impl<'tcx> Display for Constant<'tcx>

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

Formats the value using the given formatter.

impl<'tcx, __E: TyEncoder<I = TyCtxt<'tcx>>> Encodable<__E> for Constant<'tcx>

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

impl<'tcx> Hash for Constant<'tcx>

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

Feeds this value into the given Hasher.

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

Feeds a slice of this type into the given Hasher.

impl<'tcx, '__ctx> HashStable<StableHashingContext<'__ctx>> for Constant<'tcx>

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

impl<'tcx> PartialEq<Constant<'tcx>> for Constant<'tcx>

fn eq(&self, other: &Constant<'tcx>) -> 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 Constant<'tcx>

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) -> Selfwhere 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 Constant<'tcx>

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

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

impl<'tcx> Copy for Constant<'tcx>

impl<'tcx> StructuralPartialEq for Constant<'tcx>

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:56 bytes