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Continuation

Enum Continuation 

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pub enum Continuation<'a, A> {
    Action(&'a A),
    Prefix,
}
Expand description

What pressing one more key after a prefix does, as reported by SequenceKeymap::continuations.

The two variants are exhaustive on purpose, mirroring Match: by the prefix-free invariant a node is terminal xor internal, so a child is either a completed binding or a deeper prefix — there is no third kind of node. This enum is therefore not #[non_exhaustive]; a third variant could only arise by abandoning the trie’s defining invariant.

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Action(&'a A)

Pressing this key completes a binding, resolving to this action.

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Prefix

Pressing this key opens a deeper prefix; more keys must follow.

Trait Implementations§

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impl<'a, A: Debug> Debug for Continuation<'a, A>

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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<'a, A: Eq> Eq for Continuation<'a, A>

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impl<'a, A: PartialEq> PartialEq for Continuation<'a, A>

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fn eq(&self, other: &Continuation<'a, A>) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<'a, A> StructuralPartialEq for Continuation<'a, A>

Auto Trait Implementations§

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impl<'a, A> Freeze for Continuation<'a, A>

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impl<'a, A> RefUnwindSafe for Continuation<'a, A>
where A: RefUnwindSafe,

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impl<'a, A> Send for Continuation<'a, A>
where A: Sync,

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impl<'a, A> Sync for Continuation<'a, A>
where A: Sync,

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impl<'a, A> Unpin for Continuation<'a, A>

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impl<'a, A> UnsafeUnpin for Continuation<'a, A>

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impl<'a, A> UnwindSafe for Continuation<'a, A>
where A: RefUnwindSafe,

Blanket Implementations§

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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> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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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, 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.