rustc_transmute::maybe_transmutable

Struct MaybeTransmutableQuery

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pub(crate) struct MaybeTransmutableQuery<L, C>
where
    C: QueryContext,
{
    src: L,
    dst: L,
    assume: Assume,
    context: C,
}

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§src: L§dst: L§assume: Assume§context: C

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impl<'tcx> MaybeTransmutableQuery<Ty<'tcx>, TyCtxt<'tcx>>

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pub(crate) fn answer(self) -> Answer<Ref<'tcx>>

This method begins by converting src and dst from Tys to Trees, then computes an answer using those trees.

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impl<L, C> MaybeTransmutableQuery<L, C>
where C: QueryContext,

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pub(crate) fn new(src: L, dst: L, assume: Assume, context: C) -> Self

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impl<C> MaybeTransmutableQuery<Tree<<C as QueryContext>::Def, <C as QueryContext>::Ref>, C>
where C: QueryContext,

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pub(crate) fn answer(self) -> Answer<<C as QueryContext>::Ref>

Answers whether a Tree is transmutable into another Tree.

This method begins by de-def’ing src and dst, and prunes private paths from dst, then converts src and dst to Nfas, and computes an answer using those NFAs.

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impl<C> MaybeTransmutableQuery<Nfa<<C as QueryContext>::Ref>, C>
where C: QueryContext,

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pub(crate) fn answer(self) -> Answer<<C as QueryContext>::Ref>

Answers whether a Nfa is transmutable into another Nfa.

This method converts src and dst to DFAs, then computes an answer using those DFAs.

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impl<C> MaybeTransmutableQuery<Dfa<<C as QueryContext>::Ref>, C>
where C: QueryContext,

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pub(crate) fn answer(self) -> Answer<<C as QueryContext>::Ref>

Answers whether a Dfa is transmutable into another Dfa.

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fn answer_memo( &self, cache: &mut Map<(State, State), Answer<<C as QueryContext>::Ref>>, src_state: State, dst_state: State, ) -> Answer<<C as QueryContext>::Ref>

Auto Trait Implementations§

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impl<L, C> DynSend for MaybeTransmutableQuery<L, C>
where L: DynSend, C: DynSend,

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impl<L, C> DynSync for MaybeTransmutableQuery<L, C>
where L: DynSync, C: DynSync,

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impl<L, C> Freeze for MaybeTransmutableQuery<L, C>
where L: Freeze, C: Freeze,

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impl<L, C> RefUnwindSafe for MaybeTransmutableQuery<L, C>
where L: RefUnwindSafe, C: RefUnwindSafe,

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impl<L, C> Send for MaybeTransmutableQuery<L, C>
where L: Send, C: Send,

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impl<L, C> Sync for MaybeTransmutableQuery<L, C>
where L: Sync, C: Sync,

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impl<L, C> Unpin for MaybeTransmutableQuery<L, C>
where L: Unpin, C: Unpin,

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impl<L, C> UnwindSafe for MaybeTransmutableQuery<L, C>
where L: UnwindSafe, C: UnwindSafe,

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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<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>

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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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fn into_query_param(self) -> 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, 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

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

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impl<T> MaybeSendSync for T
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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.