Enum rustc_infer::infer::TyOrConstInferVar

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pub enum TyOrConstInferVar<'tcx> {
    Ty(TyVid),
    TyInt(IntVid),
    TyFloat(FloatVid),
    Const(ConstVid<'tcx>),
}

Expand description

Helper for ty_or_const_infer_var_changed (see comment on that), currently used only for traits::fulfill’s list of stalled_on inference variables.

Variants

`Ty(TyVid)`

Equivalent to ty::Infer(ty::TyVar(_)).

`TyInt(IntVid)`

Equivalent to ty::Infer(ty::IntVar(_)).

`TyFloat(FloatVid)`

Equivalent to ty::Infer(ty::FloatVar(_)).

`Const(ConstVid<'tcx>)`

Equivalent to ty::ConstKind::Infer(ty::InferConst::Var(_)).

Implementations

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impl<'tcx> TyOrConstInferVar<'tcx>

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pub fn maybe_from_generic_arg(arg: GenericArg<'tcx>) -> Option<Self>

Tries to extract an inference variable from a type or a constant, returns None for types other than ty::Infer(_) (or InferTy::Fresh*) and for constants other than ty::ConstKind::Infer(_) (or InferConst::Fresh).

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fn maybe_from_ty(ty: Ty<'tcx>) -> Option<Self>

Tries to extract an inference variable from a type, returns None for types other than ty::Infer(_) (or InferTy::Fresh*).

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fn maybe_from_const(ct: Const<'tcx>) -> Option<Self>

Tries to extract an inference variable from a constant, returns None for constants other than ty::ConstKind::Infer(_) (or InferConst::Fresh).

Trait Implementations

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impl<'tcx> Clone for TyOrConstInferVar<'tcx>

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

Returns a copy of the value. Read more

1.0.0 · source

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

Performs copy-assignment from source. Read more

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impl<'tcx> Debug for TyOrConstInferVar<'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 TyOrConstInferVar<'tcx>

Auto Trait Implementations

impl<'tcx> RefUnwindSafe for TyOrConstInferVar<'tcx>

impl<'tcx> Send for TyOrConstInferVar<'tcx>

impl<'tcx> Sync for TyOrConstInferVar<'tcx>

impl<'tcx> Unpin for TyOrConstInferVar<'tcx>

impl<'tcx> UnwindSafe for TyOrConstInferVar<'tcx>

Blanket Implementations

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impl<T> Any for Twhere
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 Twhere
T: Copy,

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

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fn allocate_from_iter(
arena: &'a Arena<'tcx>,
iter: impl IntoIterator<Item = T>
) -> &'a mut [T]ⓘNotable traits for &[u8]`impl Read for &[u8]impl Write for &mut [u8]`

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for Twhere
T: ?Sized,

const: unstable · source

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

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for Twhere
U: From<T>,

const: unstable · source

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> ToOwned for Twhere
T: Clone,

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 for Twhere
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for Twhere
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

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impl<'a, T> Captures<'a> for Twhere
T: ?Sized,

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

Size for each variant:

Ty: 4 bytes
TyInt: 4 bytes
TyFloat: 4 bytes
Const: 4 bytes

Enum rustc_infer::infer::TyOrConstInferVar

Variants

Ty(TyVid)

TyInt(IntVid)

TyFloat(FloatVid)

Const(ConstVid<'tcx>)

Implementations

impl<'tcx> TyOrConstInferVar<'tcx>

pub fn maybe_from_generic_arg(arg: GenericArg<'tcx>) -> Option<Self>

fn maybe_from_ty(ty: Ty<'tcx>) -> Option<Self>

fn maybe_from_const(ct: Const<'tcx>) -> Option<Self>

Trait Implementations

impl<'tcx> Clone for TyOrConstInferVar<'tcx>

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

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

impl<'tcx> Debug for TyOrConstInferVar<'tcx>

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

impl<'tcx> Copy for TyOrConstInferVar<'tcx>

Auto Trait Implementations

impl<'tcx> RefUnwindSafe for TyOrConstInferVar<'tcx>

impl<'tcx> Send for TyOrConstInferVar<'tcx>

impl<'tcx> Sync for TyOrConstInferVar<'tcx>

impl<'tcx> Unpin for TyOrConstInferVar<'tcx>

impl<'tcx> UnwindSafe for TyOrConstInferVar<'tcx>

Blanket Implementations

impl<T> Any for Twhere T: 'static + ?Sized,

fn type_id(&self) -> TypeId

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

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

fn allocate_from_iter( arena: &'a Arena<'tcx>, iter: impl IntoIterator<Item = T>) -> &'a mut [T]ⓘNotable traits for &[u8]impl Read for &[u8]impl Write for &mut [u8]

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

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

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

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for Twhere U: From<T>,

fn into(self) -> U

impl<T> ToOwned for Twhere T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<'a, T> Captures<'a> for Twhere T: ?Sized,

Layout

`Ty(TyVid)`

`TyInt(IntVid)`

`TyFloat(FloatVid)`

`Const(ConstVid<'tcx>)`

impl<T> Any for Twhere
T: 'static + ?Sized,

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

fn allocate_from_iter(
arena: &'a Arena<'tcx>,
iter: impl IntoIterator<Item = T>
) -> &'a mut [T]ⓘNotable traits for &[u8]`impl Read for &[u8]impl Write for &mut [u8]`

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

impl<T> BorrowMut<T> for Twhere
T: ?Sized,

impl<T, U> Into<U> for Twhere
U: From<T>,

impl<T> ToOwned for Twhere
T: Clone,

impl<T, U> TryFrom<U> for Twhere
U: Into<T>,

impl<T, U> TryInto<U> for Twhere
U: TryFrom<T>,

impl<'a, T> Captures<'a> for Twhere
T: ?Sized,