Stack

rustc_type_ir::search_graph::stack

Struct Stack 

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pub(super) struct Stack<X: Cx> {
    entries: IndexVec<StackDepth, StackEntry<X>>,
}
Expand description

The stack of goals currently being computed.

An element is deeper in the stack if its index is lower.

Only the last entry of the stack is mutable. All other entries get lazily updated in update_parent_goal.

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§entries: IndexVec<StackDepth, StackEntry<X>>

Implementations§

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impl<X: Cx> Stack<X>

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pub(super) fn is_empty(&self) -> bool

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pub(super) fn len(&self) -> usize

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pub(super) fn last(&self) -> Option<&StackEntry<X>>

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pub(super) fn last_mut(&mut self) -> Option<&mut StackEntry<X>>

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pub(super) fn last_mut_with_index( &mut self, ) -> Option<(StackDepth, &mut StackEntry<X>)>

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pub(super) fn next_index(&self) -> StackDepth

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pub(super) fn push(&mut self, entry: StackEntry<X>) -> StackDepth

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pub(super) fn pop(&mut self) -> StackEntry<X>

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pub(super) fn cycle_step_kinds( &self, head: StackDepth, ) -> impl Iterator<Item = PathKind>

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pub(super) fn iter(&self) -> impl Iterator<Item = &StackEntry<X>>

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pub(super) fn find(&self, input: X::Input) -> Option<StackDepth>

Trait Implementations§

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impl<X> Default for Stack<X>
where X: Cx,

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl<X: Cx> Index<StackDepth> for Stack<X>

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type Output = StackEntry<X>

The returned type after indexing.
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fn index(&self, index: StackDepth) -> &StackEntry<X>

Performs the indexing (container[index]) operation. Read more

Auto Trait Implementations§

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impl<X> DynSend for Stack<X>
where <X as Cx>::Input: DynSend, <X as Cx>::Result: DynSend,

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impl<X> DynSync for Stack<X>
where <X as Cx>::Input: DynSync, <X as Cx>::Result: DynSync,

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impl<X> Freeze for Stack<X>

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impl<X> RefUnwindSafe for Stack<X>
where <X as Cx>::Input: RefUnwindSafe, <X as Cx>::Result: RefUnwindSafe,

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impl<X> Send for Stack<X>
where <X as Cx>::Input: Send, <X as Cx>::Result: Send,

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impl<X> Sync for Stack<X>
where <X as Cx>::Input: Sync, <X as Cx>::Result: Sync,

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impl<X> Unpin for Stack<X>
where <X as Cx>::Input: Unpin, <X as Cx>::Result: Unpin,

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impl<X> UnwindSafe for Stack<X>
where <X as Cx>::Input: UnwindSafe, <X as Cx>::Result: 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> 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<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

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

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: 24 bytes