Struct AdtDef

pub struct AdtDef<'tcx>(pub Interned<'tcx, AdtDefData>);

Tuple Fields

0: Interned<'tcx, AdtDefData>

Implementations

impl<'tcx> AdtDef<'tcx>

pub fn did(self) -> DefId

pub fn variants(self) -> &'tcx IndexSlice<VariantIdx, VariantDef>

pub fn variant(self, idx: VariantIdx) -> &'tcx VariantDef

pub fn flags(self) -> AdtFlags

pub fn repr(self) -> ReprOptions

impl<'tcx> AdtDef<'tcx>

pub fn is_struct(self) -> bool

Returns true if this is a struct.

pub fn is_union(self) -> bool

Returns true if this is a union.

pub fn is_enum(self) -> bool

Returns true if this is an enum.

pub fn is_variant_list_non_exhaustive(self) -> bool

Returns true if the variant list of this ADT is #[non_exhaustive].

Note that this function will return true even if the ADT has been defined in the crate currently being compiled. If that’s not what you want, see Self::variant_list_has_applicable_non_exhaustive.

pub fn variant_list_has_applicable_non_exhaustive(self) -> bool

Returns true if the variant list of this ADT is #[non_exhaustive] and has been defined in another crate.

pub fn adt_kind(self) -> AdtKind

Returns the kind of the ADT.

pub fn descr(self) -> &'static str

Returns a description of this abstract data type.

pub fn variant_descr(self) -> &'static str

Returns a description of a variant of this abstract data type.

pub fn has_ctor(self) -> bool

If this function returns true, it implies that is_struct must return true.

pub fn is_fundamental(self) -> bool

Returns true if this type is #[fundamental] for the purposes of coherence checking.

pub fn is_phantom_data(self) -> bool

Returns true if this is PhantomData<T>.

pub fn is_box(self) -> bool

Returns true if this is Box<T>.

pub fn is_unsafe_cell(self) -> bool

Returns true if this is UnsafeCell<T>.

pub fn is_unsafe_pinned(self) -> bool

Returns true if this is UnsafePinned<T>.

pub fn is_manually_drop(self) -> bool

Returns true if this is ManuallyDrop<T>.

pub fn has_dtor(self, tcx: TyCtxt<'tcx>) -> bool

Returns true if this type has a destructor.

pub fn non_enum_variant(self) -> &'tcx VariantDef

Asserts this is a struct or union and returns its unique variant.

pub fn predicates(self, tcx: TyCtxt<'tcx>) -> GenericPredicates<'tcx>

pub fn all_fields(self) -> impl Iterator<Item = &'tcx FieldDef> + Clone

Returns an iterator over all fields contained by this ADT (nested unnamed fields are not expanded).

pub fn is_payloadfree(self) -> bool

Whether the ADT lacks fields. Note that this includes uninhabited enums, e.g., enum Void {} is considered payload free as well.

pub fn variant_with_id(self, vid: DefId) -> &'tcx VariantDef

Return a VariantDef given a variant id.

pub fn variant_with_ctor_id(self, cid: DefId) -> &'tcx VariantDef

Return a VariantDef given a constructor id.

pub fn variant_index_with_id(self, vid: DefId) -> VariantIdx

Return the index of VariantDef given a variant id.

pub fn variant_index_with_ctor_id(self, cid: DefId) -> VariantIdx

Return the index of VariantDef given a constructor id.

pub fn variant_of_res(self, res: Res) -> &'tcx VariantDef

pub fn eval_explicit_discr( self, tcx: TyCtxt<'tcx>, expr_did: DefId, ) -> Result<Discr<'tcx>, ErrorGuaranteed>

pub fn discriminants( self, tcx: TyCtxt<'tcx>, ) -> impl Iterator<Item = (VariantIdx, Discr<'tcx>)>

pub fn variant_range(self) -> Range<VariantIdx>

pub fn discriminant_for_variant( self, tcx: TyCtxt<'tcx>, variant_index: VariantIdx, ) -> Discr<'tcx>

Computes the discriminant value used by a specific variant. Unlike discriminants, this is (amortized) constant-time, only doing at most one query for evaluating an explicit discriminant (the last one before the requested variant), assuming there are no constant-evaluation errors there.

pub fn discriminant_def_for_variant( self, variant_index: VariantIdx, ) -> (Option<DefId>, u32)

Yields a DefId for the discriminant and an offset to add to it Alternatively, if there is no explicit discriminant, returns the inferred discriminant directly.

pub fn destructor(self, tcx: TyCtxt<'tcx>) -> Option<Destructor>

pub fn async_destructor(self, tcx: TyCtxt<'tcx>) -> Option<AsyncDestructor>

pub fn sizedness_constraint( self, tcx: TyCtxt<'tcx>, sizedness: SizedTraitKind, ) -> Option<EarlyBinder<'tcx, Ty<'tcx>>>

If this ADT is a struct, returns a type such that Self: {Meta,Pointee,}Sized if and only if that type is {Meta,Pointee,}Sized, or None if this ADT is always {Meta,Pointee,}Sized.

Trait Implementations

impl<'tcx> AdtDef<TyCtxt<'tcx>> for AdtDef<'tcx>

fn def_id(self) -> DefId

fn is_struct(self) -> bool

fn struct_tail_ty( self, interner: TyCtxt<'tcx>, ) -> Option<EarlyBinder<'tcx, Ty<'tcx>>>

Returns the type of the struct tail.

fn is_phantom_data(self) -> bool

fn is_manually_drop(self) -> bool

fn all_field_tys( self, tcx: TyCtxt<'tcx>, ) -> EarlyBinder<'tcx, impl IntoIterator<Item = Ty<'tcx>>>

fn sizedness_constraint( self, tcx: TyCtxt<'tcx>, sizedness: SizedTraitKind, ) -> Option<EarlyBinder<'tcx, Ty<'tcx>>>

fn is_fundamental(self) -> bool

fn destructor(self, tcx: TyCtxt<'tcx>) -> Option<AdtDestructorKind>

impl<'tcx> Clone for AdtDef<'tcx>

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

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'tcx> Debug for AdtDef<'tcx>

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

Formats the value using the given formatter.

impl<'tcx, D: TyDecoder<'tcx>> Decodable<D> for AdtDef<'tcx>

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

impl<'tcx, E: TyEncoder<'tcx>> Encodable<E> for AdtDef<'tcx>

fn encode(&self, e: &mut E)

impl<'tcx> EraseType for AdtDef<'tcx>

type Result = [u8; 8]

impl<'tcx> Hash for AdtDef<'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 AdtDef<'tcx>

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

impl<'tcx> PartialEq for AdtDef<'tcx>

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

Tests for self and other values to be equal, and is used by ==.

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

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

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

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<'tcx> Copy for AdtDef<'tcx>

impl<'tcx> Eq for AdtDef<'tcx>

impl<'tcx> StructuralPartialEq for AdtDef<'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: 8 bytes