Struct Ty

pub struct Ty<'db>(/* private fields */);

Implementations

impl Ty<'static>

pub fn ingredient<Db>(db: &Db) -> &IngredientImpl<Ty<'static>>

where Db: Database + ?Sized,

impl<'db> Ty<'db>

pub fn new_<Db_, T0>(db: &'db Db_, kind_: T0) -> Ty<'db>

where T0: Lookup<InternedWrapperNoDebug<WithCachedTypeInfo<TyKind<DbInterner<'db>>>>> + Hash, Db_: Database + ?Sized, InternedWrapperNoDebug<WithCachedTypeInfo<TyKind<DbInterner<'db>>>>: HashEqLike<T0>,

pub fn default_debug_fmt( this: Ty<'db>, f: &mut Formatter<'_>, ) -> Result<(), Error>

Default debug formatting for this struct (may be useful if you define your own Debug impl)

impl<'db> Ty<'db>

pub fn new(interner: DbInterner<'db>, kind: TyKind<DbInterner<'db>>) -> Ty<'db>

pub fn inner(&self) -> &WithCachedTypeInfo<TyKind<DbInterner<'db>>>

pub fn new_param( interner: DbInterner<'db>, id: TypeParamId, index: u32, name: Symbol, ) -> Ty<'db>

pub fn new_placeholder( interner: DbInterner<'db>, placeholder: Placeholder<BoundTy>, ) -> Ty<'db>

pub fn new_infer(interner: DbInterner<'db>, infer: InferTy) -> Ty<'db>

pub fn new_int_var(interner: DbInterner<'db>, v: IntVid) -> Ty<'db>

pub fn new_float_var(interner: DbInterner<'db>, v: FloatVid) -> Ty<'db>

pub fn new_int(interner: DbInterner<'db>, i: IntTy) -> Ty<'db>

pub fn new_uint(interner: DbInterner<'db>, ui: UintTy) -> Ty<'db>

pub fn new_float(interner: DbInterner<'db>, f: FloatTy) -> Ty<'db>

pub fn new_fresh(interner: DbInterner<'db>, n: u32) -> Ty<'db>

pub fn new_fresh_int(interner: DbInterner<'db>, n: u32) -> Ty<'db>

pub fn new_fresh_float(interner: DbInterner<'db>, n: u32) -> Ty<'db>

pub fn new_empty_tuple(interner: DbInterner<'db>) -> Ty<'db>

pub fn primitive_size(self, interner: DbInterner<'db>) -> Size

Returns the Size for primitive types (bool, uint, int, char, float).

pub fn int_size_and_signed(self, interner: DbInterner<'db>) -> (Size, bool)

pub fn walk(self) -> TypeWalker<DbInterner<'db>>

pub fn has_trivial_sizedness( self, tcx: DbInterner<'db>, sizedness: SizedTraitKind, ) -> bool

Fast path helper for testing if a type is Sized or MetaSized.

Returning true means the type is known to implement the sizedness trait. Returning false means nothing – could be sized, might not be.

Note that we could never rely on the fact that a type such as [_] is trivially !Sized because we could be in a type environment with a bound such as [_]: Copy. A function with such a bound obviously never can be called, but that doesn’t mean it shouldn’t typecheck. This is why this method doesn’t return Option<bool>.

pub fn is_trivially_pure_clone_copy(self) -> bool

Fast path helper for primitives which are always Copy and which have a side-effect-free Clone impl.

Returning true means the type is known to be pure and Copy+Clone. Returning false means nothing – could be Copy, might not be.

This is mostly useful for optimizations, as these are the types on which we can replace cloning with dereferencing.

pub fn is_trivially_wf(self, tcx: DbInterner<'db>) -> bool

Trait Implementations

impl<'db> ChalkToNextSolver<'db, Ty<'db>> for Ty<Interner>

fn to_nextsolver(&self, interner: DbInterner<'db>) -> Ty<'db>

impl<'db> Clone for Ty<'db>

fn clone(&self) -> Ty<'db>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'db> Debug for Ty<'db>

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

Formats the value using the given formatter.

impl<'db> Flags for Ty<'db>

fn flags(&self) -> TypeFlags

fn outer_exclusive_binder(&self) -> DebruijnIndex

impl<'db> From<Ty<'db>> for GenericArg<'db>

fn from(value: Ty<'db>) -> GenericArg<'db>

Converts to this type from the input type.

impl<'db> From<Ty<'db>> for Term<'db>

fn from(value: Ty<'db>) -> Term<'db>

Converts to this type from the input type.

impl<'db> Hash for Ty<'db>

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

where __H: Hasher,

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<'db> HirDisplay for Ty<'db>

fn hir_fmt(&self, f: &mut HirFormatter<'_>) -> Result<(), HirDisplayError>

fn into_displayable<'a>( &'a self, db: &'a (dyn HirDatabase + 'static), max_size: Option<usize>, limited_size: Option<usize>, omit_verbose_types: bool, display_target: DisplayTarget, display_kind: DisplayKind, closure_style: ClosureStyle, show_container_bounds: bool, ) -> HirDisplayWrapper<'a, Self>

where Self: Sized,

Returns a Displayable type that is human-readable.

fn display<'a>( &'a self, db: &'a (dyn HirDatabase + 'static), display_target: DisplayTarget, ) -> HirDisplayWrapper<'a, Self>

where Self: Sized,

Returns a Displayable type that is human-readable. Use this for showing types to the user (e.g. diagnostics)

fn display_truncated<'a>( &'a self, db: &'a (dyn HirDatabase + 'static), max_size: Option<usize>, display_target: DisplayTarget, ) -> HirDisplayWrapper<'a, Self>

where Self: Sized,

Returns a Displayable type that is human-readable and tries to be succinct. Use this for showing types to the user where space is constrained (e.g. doc popups)

fn display_limited<'a>( &'a self, db: &'a (dyn HirDatabase + 'static), limited_size: Option<usize>, display_target: DisplayTarget, ) -> HirDisplayWrapper<'a, Self>

where Self: Sized,

Returns a Displayable type that is human-readable and tries to limit the number of items inside. Use this for showing definitions which may contain too many items, like trait, struct, enum

fn display_source_code<'a>( &'a self, db: &'a (dyn HirDatabase + 'static), module_id: ModuleId, allow_opaque: bool, ) -> Result<String, DisplaySourceCodeError>

Returns a String representation of self that can be inserted into the given module. Use this when generating code (e.g. assists)

fn display_test<'a>( &'a self, db: &'a (dyn HirDatabase + 'static), display_target: DisplayTarget, ) -> HirDisplayWrapper<'a, Self>

where Self: Sized,

Returns a String representation of self for test purposes

fn display_with_container_bounds<'a>( &'a self, db: &'a (dyn HirDatabase + 'static), show_container_bounds: bool, display_target: DisplayTarget, ) -> HirDisplayWrapper<'a, Self>

where Self: Sized,

Returns a String representation of self that shows the constraint from the container for functions

impl<'db> IntoKind for Ty<'db>

type Kind = TyKind<DbInterner<'db>>

fn kind(self) -> <Ty<'db> as IntoKind>::Kind

impl<'db> PartialEq for Ty<'db>

fn eq(&self, other: &Ty<'db>) -> 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<'db> Relate<DbInterner<'db>> for Ty<'db>

fn relate<R>( relation: &mut R, a: Ty<'db>, b: Ty<'db>, ) -> Result<Ty<'db>, TypeError<DbInterner<'db>>>

where R: TypeRelation<DbInterner<'db>>,

impl<'db> ToTrace<'db> for Ty<'db>

fn to_trace(cause: &ObligationCause, a: Ty<'db>, b: Ty<'db>) -> TypeTrace<'db>

impl<'db> Ty<DbInterner<'db>> for Ty<'db>

fn new_unit(interner: DbInterner<'db>) -> Ty<'db>

fn new_bool(interner: DbInterner<'db>) -> Ty<'db>

fn new_u8(interner: DbInterner<'db>) -> Ty<'db>

fn new_usize(interner: DbInterner<'db>) -> Ty<'db>

fn new_infer(interner: DbInterner<'db>, var: InferTy) -> Ty<'db>

fn new_var(interner: DbInterner<'db>, var: TyVid) -> Ty<'db>

fn new_param(interner: DbInterner<'db>, param: ParamTy) -> Ty<'db>

fn new_placeholder( interner: DbInterner<'db>, param: Placeholder<BoundTy>, ) -> Ty<'db>

fn new_bound( interner: DbInterner<'db>, debruijn: DebruijnIndex, var: BoundTy, ) -> Ty<'db>

fn new_anon_bound( interner: DbInterner<'db>, debruijn: DebruijnIndex, var: BoundVar, ) -> Ty<'db>

fn new_alias( interner: DbInterner<'db>, kind: AliasTyKind, alias_ty: AliasTy<DbInterner<'db>>, ) -> Ty<'db>

fn new_error(interner: DbInterner<'db>, guar: ErrorGuaranteed) -> Ty<'db>

fn new_adt( interner: DbInterner<'db>, adt_def: <DbInterner<'db> as Interner>::AdtDef, args: GenericArgs<'db>, ) -> Ty<'db>

fn new_foreign( interner: DbInterner<'db>, def_id: <DbInterner<'db> as Interner>::DefId, ) -> Ty<'db>

fn new_dynamic( interner: DbInterner<'db>, preds: <DbInterner<'db> as Interner>::BoundExistentialPredicates, region: <DbInterner<'db> as Interner>::Region, kind: DynKind, ) -> Ty<'db>

fn new_coroutine( interner: DbInterner<'db>, def_id: <DbInterner<'db> as Interner>::DefId, args: <DbInterner<'db> as Interner>::GenericArgs, ) -> Ty<'db>

fn new_coroutine_closure( interner: DbInterner<'db>, def_id: <DbInterner<'db> as Interner>::DefId, args: <DbInterner<'db> as Interner>::GenericArgs, ) -> Ty<'db>

fn new_closure( interner: DbInterner<'db>, def_id: <DbInterner<'db> as Interner>::DefId, args: <DbInterner<'db> as Interner>::GenericArgs, ) -> Ty<'db>

fn new_coroutine_witness( interner: DbInterner<'db>, def_id: <DbInterner<'db> as Interner>::DefId, args: <DbInterner<'db> as Interner>::GenericArgs, ) -> Ty<'db>

fn new_coroutine_witness_for_coroutine( interner: DbInterner<'db>, def_id: <DbInterner<'db> as Interner>::DefId, coroutine_args: <DbInterner<'db> as Interner>::GenericArgs, ) -> Ty<'db>

fn new_ptr(interner: DbInterner<'db>, ty: Ty<'db>, mutbl: Mutability) -> Ty<'db>

fn new_ref( interner: DbInterner<'db>, region: <DbInterner<'db> as Interner>::Region, ty: Ty<'db>, mutbl: Mutability, ) -> Ty<'db>

fn new_array_with_const_len( interner: DbInterner<'db>, ty: Ty<'db>, len: <DbInterner<'db> as Interner>::Const, ) -> Ty<'db>

fn new_slice(interner: DbInterner<'db>, ty: Ty<'db>) -> Ty<'db>

fn new_tup( interner: DbInterner<'db>, tys: &[<DbInterner<'db> as Interner>::Ty], ) -> Ty<'db>

fn new_tup_from_iter<It, T>( interner: DbInterner<'db>, iter: It, ) -> <T as CollectAndApply<Ty<'db>, Ty<'db>>>::Output

where It: Iterator<Item = T>, T: CollectAndApply<Ty<'db>, Ty<'db>>,

fn new_fn_def( interner: DbInterner<'db>, def_id: <DbInterner<'db> as Interner>::DefId, args: <DbInterner<'db> as Interner>::GenericArgs, ) -> Ty<'db>

fn new_fn_ptr( interner: DbInterner<'db>, sig: Binder<DbInterner<'db>, FnSig<DbInterner<'db>>>, ) -> Ty<'db>

fn new_pat( interner: DbInterner<'db>, ty: Ty<'db>, pat: <DbInterner<'db> as Interner>::Pat, ) -> Ty<'db>

fn tuple_fields(self) -> <DbInterner<'db> as Interner>::Tys

fn to_opt_closure_kind(self) -> Option<ClosureKind>

fn from_closure_kind(interner: DbInterner<'db>, kind: ClosureKind) -> Ty<'db>

fn from_coroutine_closure_kind( interner: DbInterner<'db>, kind: ClosureKind, ) -> Ty<'db>

fn discriminant_ty( self, interner: DbInterner<'db>, ) -> <DbInterner<'db> as Interner>::Ty

fn new_unsafe_binder( interner: DbInterner<'db>, ty: Binder<DbInterner<'db>, <DbInterner<'db> as Interner>::Ty>, ) -> Ty<'db>

fn has_unsafe_fields(self) -> bool

Checks whether this type is an ADT that has unsafe fields.

fn new_projection_from_args( interner: I, def_id: <I as Interner>::DefId, args: <I as Interner>::GenericArgs, ) -> Self

fn new_projection( interner: I, def_id: <I as Interner>::DefId, args: impl IntoIterator>, ) -> Self

where <impl IntoIterator as IntoIterator>::Item: Into<<I as Interner>::GenericArg>,

fn is_ty_var(self) -> bool

fn is_ty_error(self) -> bool

fn is_floating_point(self) -> bool

fn is_integral(self) -> bool

fn is_fn_ptr(self) -> bool

fn fn_sig(self, interner: I) -> Binder<I, FnSig<I>>

fn is_known_rigid(self) -> bool

fn is_guaranteed_unsized_raw(self) -> bool

impl<'db> TypeFoldable<DbInterner<'db>> for Ty<'db>

fn try_fold_with<F>( self, folder: &mut F, ) -> Result<Ty<'db>, <F as FallibleTypeFolder<DbInterner<'db>>>::Error>

where F: FallibleTypeFolder<DbInterner<'db>>,

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) -> Ty<'db>

where F: TypeFolder<DbInterner<'db>>,

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

impl<'db> TypeSuperFoldable<DbInterner<'db>> for Ty<'db>

fn try_super_fold_with<F>( self, folder: &mut F, ) -> Result<Ty<'db>, <F as FallibleTypeFolder<DbInterner<'db>>>::Error>

where F: FallibleTypeFolder<DbInterner<'db>>,

Provides a default fold for a recursive type of interest. This should only be called within TypeFolder methods, when a non-custom traversal is desired for the value of the type of interest passed to that method. For example, in MyFolder::try_fold_ty(ty), it is valid to call ty.try_super_fold_with(self), but any other folding should be done with xyz.try_fold_with(self).

fn super_fold_with<F>(self, folder: &mut F) -> Ty<'db>

where F: TypeFolder<DbInterner<'db>>,

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

impl<'db> TypeSuperVisitable<DbInterner<'db>> for Ty<'db>

fn super_visit_with<V>( &self, visitor: &mut V, ) -> <V as TypeVisitor<DbInterner<'db>>>::Result

where V: TypeVisitor<DbInterner<'db>>,

Provides a default visit for a recursive type of interest. This should only be called within TypeVisitor methods, when a non-custom traversal is desired for the value of the type of interest passed to that method. For example, in MyVisitor::visit_ty(ty), it is valid to call ty.super_visit_with(self), but any other visiting should be done with xyz.visit_with(self).

impl<'db> TypeVisitable<DbInterner<'db>> for Ty<'db>

fn visit_with<V>( &self, visitor: &mut V, ) -> <V as TypeVisitor<DbInterner<'db>>>::Result

where V: TypeVisitor<DbInterner<'db>>,

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

impl<'db> Update for Ty<'db>

unsafe fn maybe_update(old_pointer: *mut Ty<'db>, new_value: Ty<'db>) -> bool

Returns

impl<'db> Copy for Ty<'db>

impl<'db> Eq for Ty<'db>

impl<'db> Send for Ty<'db>

impl<'db> StructuralPartialEq for Ty<'db>

impl<'db> Sync for Ty<'db>