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MaybeTransmutableQuery

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<Region<TyCtxt<'tcx>>, Ty<'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>::Region, <C as QueryContext>::Type>, C>
where C: QueryContext,

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pub(crate) fn answer( self, ) -> Answer<<C as QueryContext>::Region, <C as QueryContext>::Type>

Answers whether a Tree is transmutable into another Tree.

Removes definition markers from both trees and, unless safety is assumed, prunes destination paths that may carry safety invariants. It then converts the remaining layouts to Dfas and compares them.

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impl<C> MaybeTransmutableQuery<Dfa<<C as QueryContext>::Region, <C as QueryContext>::Type>, C>
where C: QueryContext,

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pub(crate) fn answer( self, ) -> Answer<<C as QueryContext>::Region, <C as QueryContext>::Type>

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>::Region, <C as QueryContext>::Type>>, src_state: State, dst_state: State, ) -> Answer<<C as QueryContext>::Region, <C as QueryContext>::Type>

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

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> UnsafeUnpin for MaybeTransmutableQuery<L, C>
where L: UnsafeUnpin, C: UnsafeUnpin,

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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> ErasedDestructor for T
where T: 'static,

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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<K> IntoQueryKey<K> for K

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fn into_query_key(self) -> K

Argument conversion from Self to K. This should always be a very cheap conversion, e.g. LocalDefId::to_def_id.
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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 = !

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

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<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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Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more

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.