Enum rustc_middle::middle::resolve_lifetime::Set1

source ·

pub enum Set1<T> {
    Empty,
    One(T),
    Many,
}

Expand description

A set containing, at most, one known element. If two distinct values are inserted into a set, then it becomes Many, which can be used to detect ambiguities.

Variants

`Empty`

`One(T)`

`Many`

Implementations

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impl<T: PartialEq> Set1<T>

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pub fn insert(&mut self, value: T)

Trait Implementations

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impl<T: Clone> Clone for Set1<T>

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fn clone(&self) -> Set1<T>

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<T: Debug> Debug for Set1<T>

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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<'ctx, T> HashStable<StableHashingContext<'ctx>> for Set1<T>where
T: HashStable<StableHashingContext<'__ctx>>,

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fn hash_stable(
 &self,
 hcx: &mut StableHashingContext<'ctx>,
 __hasher: &mut StableHasher
)

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impl<T: PartialEq> PartialEq<Set1<T>> for Set1<T>

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fn eq(&self, other: &Set1<T>) -> bool

This method tests for self and other values to be equal, and is used by ==. Read more

1.0.0 · source

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason. Read more

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impl<T: Copy> Copy for Set1<T>

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impl<T: Eq> Eq for Set1<T>

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impl<T> StructuralEq for Set1<T>

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impl<T> StructuralPartialEq for Set1<T>

Auto Trait Implementations

impl<T> RefUnwindSafe for Set1<T>where
T: RefUnwindSafe,

impl<T> Send for Set1<T>where
T: Send,

impl<T> Sync for Set1<T>where
T: Sync,

impl<T> Unpin for Set1<T>where
T: Unpin,

impl<T> UnwindSafe for Set1<T>where
T: UnwindSafe,

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<Ctxt, T> DepNodeParams<Ctxt> for Twhere
Ctxt: DepContext,
T: for<'a> HashStable<StableHashingContext<'a>> + Debug,

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default fn fingerprint_style() -> FingerprintStyle

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default fn to_fingerprint(&self, tcx: Ctxt) -> Fingerprint

This method turns the parameters of a DepNodeConstructor into an opaque Fingerprint to be used in DepNode. Not all DepNodeParams support being turned into a Fingerprint (they don’t need to if the corresponding DepNode is anonymous). Read more

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default fn to_debug_str(&self, Ctxt) -> String

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default fn recover(Ctxt, &DepNode<<Ctxt as DepContext>::DepKind>) -> Option<T>

This method tries to recover the query key from the given DepNode, something which is needed when forcing DepNodes during red-green evaluation. The query system will only call this method if fingerprint_style() is not FingerprintStyle::Opaque. It is always valid to return None here, in which case incremental compilation will treat the query as having changed instead of forcing it. 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, R> InternIteratorElement<T, R> for T

type Output = R

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fn intern_with<I, F>(iter: I, f: F) -> <T as InternIteratorElement<T, R>>::Outputwhere
I: Iterator<Item = T>,
F: FnOnce(&[T]) -> R,

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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> MaybeResult<T> for T

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> 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<CTX, T> Value<CTX> for Twhere
CTX: DepContext,

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default fn from_cycle_error(tcx: CTX) -> T

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

Layout

Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.

Enum rustc_middle::middle::resolve_lifetime::Set1

Variants

Empty

One(T)

Many

Implementations

impl<T: PartialEq> Set1<T>

pub fn insert(&mut self, value: T)

Trait Implementations

impl<T: Clone> Clone for Set1<T>

fn clone(&self) -> Set1<T>

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

impl<T: Debug> Debug for Set1<T>

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

impl<'tcx, T, __D: TyDecoder<I = TyCtxt<'tcx>>> Decodable<__D> for Set1<T>where T: Decodable<__D>,

fn decode(__decoder: &mut __D) -> Self

impl<'tcx, T, __E: TyEncoder<I = TyCtxt<'tcx>>> Encodable<__E> for Set1<T>where T: Encodable<__E>,

fn encode(&self, __encoder: &mut __E)

impl<'__ctx, T> HashStable<StableHashingContext<'__ctx>> for Set1<T>where T: HashStable<StableHashingContext<'__ctx>>,

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

impl<T: PartialEq> PartialEq<Set1<T>> for Set1<T>

fn eq(&self, other: &Set1<T>) -> bool

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

impl<T: Copy> Copy for Set1<T>

impl<T: Eq> Eq for Set1<T>

impl<T> StructuralEq for Set1<T>

impl<T> StructuralPartialEq for Set1<T>

Auto Trait Implementations

impl<T> RefUnwindSafe for Set1<T>where T: RefUnwindSafe,

impl<T> Send for Set1<T>where T: Send,

impl<T> Sync for Set1<T>where T: Sync,

impl<T> Unpin for Set1<T>where T: Unpin,

impl<T> UnwindSafe for Set1<T>where T: UnwindSafe,

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<Ctxt, T> DepNodeParams<Ctxt> for Twhere Ctxt: DepContext, T: for<'a> HashStable<StableHashingContext<'a>> + Debug,

default fn fingerprint_style() -> FingerprintStyle

default fn to_fingerprint(&self, tcx: Ctxt) -> Fingerprint

default fn to_debug_str(&self, Ctxt) -> String

default fn recover(Ctxt, &DepNode<<Ctxt as DepContext>::DepKind>) -> Option<T>

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, R> InternIteratorElement<T, R> for T

type Output = R

fn intern_with<I, F>(iter: I, f: F) -> <T as InternIteratorElement<T, R>>::Outputwhere I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

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

fn into(self) -> U

impl<T> MaybeResult<T> for T

type Error = !

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

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

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<CTX, T> Value<CTX> for Twhere CTX: DepContext,

default fn from_cycle_error(tcx: CTX) -> T

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

Layout

`Empty`

`One(T)`

`Many`

impl<'tcx, T, D: TyDecoder<I = TyCtxt<'tcx>>> Decodable<D> for Set1<T>where
T: Decodable<__D>,

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

impl<'tcx, T, E: TyEncoder<I = TyCtxt<'tcx>>> Encodable<E> for Set1<T>where
T: Encodable<__E>,

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

impl<'ctx, T> HashStable<StableHashingContext<'ctx>> for Set1<T>where
T: HashStable<StableHashingContext<'__ctx>>,

fn hash_stable(
&self,
hcx: &mut StableHashingContext<'ctx>,
__hasher: &mut StableHasher
)

impl<T> RefUnwindSafe for Set1<T>where
T: RefUnwindSafe,

impl<T> Send for Set1<T>where
T: Send,

impl<T> Sync for Set1<T>where
T: Sync,

impl<T> Unpin for Set1<T>where
T: Unpin,

impl<T> UnwindSafe for Set1<T>where
T: UnwindSafe,

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<Ctxt, T> DepNodeParams<Ctxt> for Twhere
Ctxt: DepContext,
T: for<'a> HashStable<StableHashingContext<'a>> + Debug,

fn intern_with<I, F>(iter: I, f: F) -> <T as InternIteratorElement<T, R>>::Outputwhere
I: Iterator<Item = T>,
F: FnOnce(&[T]) -> R,

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<CTX, T> Value<CTX> for Twhere
CTX: DepContext,

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