Trait RefDecodable 

pub trait RefDecodable<'tcx, D: TyDecoder<'tcx>>: PointeeSized {
    // Required method
    fn decode(d: &mut D) -> &'tcx Self;
}

Trait for decoding to a reference.

This is a separate trait from Decodable so that we can implement it for upstream types, such as FxHashSet.

The TyDecodable derive macro will use this trait for fields that are references (and don’t use a type alias to hide that).

Decodable can still be implemented in cases where Decodable is required by a trait bound.

Implementations of this trait will typically allocate into an arena or interner, e.g. see impl_ref_decodable_into_arena!.

Required Methods

fn decode(d: &mut D) -> &'tcx Self

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for (ExportedSymbol<'tcx>, SymbolExportInfo)

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for Attribute

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for DefId

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for Ident

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for IndexVec<Promoted, Body<'tcx>>

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for InlineAsmTemplatePiece

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for LocalDefId

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for Span

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for TokenStream

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for UnordMap<DefId, EarlyBinder<'tcx, Ty<'tcx>>>

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for UnordSet<LocalDefId>

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for [(Clause<'tcx>, Span)]

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for [(ExportedSymbol<'tcx>, SymbolExportInfo)]

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for [(PolyTraitRef<'tcx>, Span)]

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for [Attribute]

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for [Body<'tcx>]

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for [DeducedParamAttrs]

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for [DefId]

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for [Graph]

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for [Ident]

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for [ImplSource<'tcx, ()>]

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for [IndexVec<Promoted, Body<'tcx>>]

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for [InlineAsmTemplatePiece]

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for [LocalDefId]

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for [Span]

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for [Spanned<MonoItem<'tcx>>]

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for [TokenStream]

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for [TypeckResults<'tcx>]

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for [UnordMap<DefId, EarlyBinder<'tcx, Ty<'tcx>>>]

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for [UnordSet<LocalDefId>]

fn decode(decoder: &mut D) -> &'tcx Self

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for [Variance]

fn decode(decoder: &mut D) -> &'tcx Self

Implementors

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for Body<'tcx>

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for DeducedParamAttrs

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for Graph

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for ImplSource<'tcx, ()>

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for List<BoundVariableKind<'tcx>>

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for List<Const<'tcx>>

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for List<FieldIdx>

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for List<LocalDefId>

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for List<Pattern<'tcx>>

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for List<PolyExistentialPredicate<'tcx>>

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for List<Ty<'tcx>>

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for ListWithCachedTypeInfo<Clause<'tcx>>

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for TypeckResults<'tcx>

impl<'tcx, D: TyDecoder<'tcx>> RefDecodable<'tcx, D> for Variance