Enum rustc_borrowck::universal_regions::DefiningTy

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pub enum DefiningTy<'tcx> {
    Closure(DefId, GenericArgsRef<'tcx>),
    Coroutine(DefId, GenericArgsRef<'tcx>),
    CoroutineClosure(DefId, GenericArgsRef<'tcx>),
    FnDef(DefId, GenericArgsRef<'tcx>),
    Const(DefId, GenericArgsRef<'tcx>),
    InlineConst(DefId, GenericArgsRef<'tcx>),
}
Expand description

The “defining type” for this MIR. The key feature of the “defining type” is that it contains the information needed to derive all the universal regions that are in scope as well as the types of the inputs/output from the MIR. In general, early-bound universal regions appear free in the defining type and late-bound regions appear bound in the signature.

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Closure(DefId, GenericArgsRef<'tcx>)

The MIR is a closure. The signature is found via ClosureArgs::closure_sig_ty.

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Coroutine(DefId, GenericArgsRef<'tcx>)

The MIR is a coroutine. The signature is that coroutines take no parameters and return the result of ClosureArgs::coroutine_return_ty.

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CoroutineClosure(DefId, GenericArgsRef<'tcx>)

The MIR is a special kind of closure that returns coroutines.

See the documentation on CoroutineClosureSignature for details on how to construct the callable signature of the coroutine from its args.

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FnDef(DefId, GenericArgsRef<'tcx>)

The MIR is a fn item with the given DefId and args. The signature of the function can be bound then with the fn_sig query.

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Const(DefId, GenericArgsRef<'tcx>)

The MIR represents some form of constant. The signature then is that it has no inputs and a single return value, which is the value of the constant.

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InlineConst(DefId, GenericArgsRef<'tcx>)

The MIR represents an inline const. The signature has no inputs and a single return value found via InlineConstArgs::ty.

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impl<'tcx> DefiningTy<'tcx>

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

Returns a list of all the upvar types for this MIR. If this is not a closure or coroutine, there are no upvars, and hence it will be an empty list. The order of types in this list will match up with the upvar order in the HIR, typesystem, and MIR.

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pub fn implicit_inputs(self) -> usize

Number of implicit inputs – notably the “environment” parameter for closures – that appear in MIR but not in the user’s code.

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pub fn is_fn_def(&self) -> bool

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pub fn is_const(&self) -> bool

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pub fn def_id(&self) -> DefId

Trait Implementations§

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impl<'tcx> Clone for DefiningTy<'tcx>

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

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<'tcx> Debug for DefiningTy<'tcx>

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

Formats the value using the given formatter. Read more
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impl<'tcx> Copy for DefiningTy<'tcx>

Auto Trait Implementations§

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impl<'tcx> DynSend for DefiningTy<'tcx>

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impl<'tcx> DynSync for DefiningTy<'tcx>

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impl<'tcx> Freeze for DefiningTy<'tcx>

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impl<'tcx> !RefUnwindSafe for DefiningTy<'tcx>

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impl<'tcx> Send for DefiningTy<'tcx>

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impl<'tcx> Sync for DefiningTy<'tcx>

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impl<'tcx> Unpin for DefiningTy<'tcx>

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impl<'tcx> !UnwindSafe for DefiningTy<'tcx>

Blanket Implementations§

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impl<T> Aligned for T

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const ALIGN: Alignment = _

Alignment of Self.
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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T
where T: Copy,

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fn allocate_on<'a>(self, arena: &'a Arena<'tcx>) -> &'a mut T

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fn allocate_from_iter<'a>( arena: &'a Arena<'tcx>, iter: impl IntoIterator<Item = T>, ) -> &'a mut [T]

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impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T
where T: Copy,

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fn allocate_on<'a>(self, arena: &'a Arena<'tcx>) -> &'a mut T

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fn allocate_from_iter<'a>( arena: &'a Arena<'tcx>, iter: impl IntoIterator<Item = T>, ) -> &'a mut [T]

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T, R> CollectAndApply<T, R> for T

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fn collect_and_apply<I, F>(iter: I, f: F) -> R
where I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

Equivalent to f(&iter.collect::<Vec<_>>()).

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type Output = R

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impl<T> Filterable for T

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fn filterable( self, filter_name: &'static str, ) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>

Creates a filterable data provider with the given name for debugging. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<P> IntoQueryParam<P> for P

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impl<T> MaybeResult<T> for T

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type Error = !

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fn from(_: Result<T, <T as MaybeResult<T>>::Error>) -> T

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fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>

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impl<T> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<I, T, U> Upcast<I, U> for T
where U: UpcastFrom<I, T>,

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fn upcast(self, interner: I) -> U

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impl<I, T> UpcastFrom<I, T> for T

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fn upcast_from(from: T, _tcx: I) -> T

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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<Tcx, T> Value<Tcx> for T
where Tcx: DepContext,

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default fn from_cycle_error( tcx: Tcx, cycle_error: &CycleError, _guar: ErrorGuaranteed, ) -> T

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<'a, T> Captures<'a> for T
where T: ?Sized,

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impl<T> ErasedDestructor for T
where T: 'static,

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impl<T> MaybeSendSync for T
where T: Send + Sync,

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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: 24 bytes

Size for each variant:

  • Closure: 16 bytes
  • Coroutine: 16 bytes
  • CoroutineClosure: 16 bytes
  • FnDef: 16 bytes
  • Const: 16 bytes
  • InlineConst: 16 bytes