Struct rustc_utils::cache::CopyCache

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pub struct CopyCache<In, Out>(/* private fields */);
Expand description

Cache for copyable types.

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impl<In, Out> CopyCache<In, Out>
where In: Hash + Eq + Clone, Out: Copy,

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pub fn len(&self) -> usize

Size of the cache

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pub fn get(&self, key: In, compute: impl FnOnce(In) -> Out) -> Out

Returns the cached value for the given key, or runs compute if the value is not in cache.

Panics

If this is a recursive invocation for this key.

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pub fn get_maybe_recursive( &self, key: In, compute: impl FnOnce(In) -> Out ) -> Option<Out>

Returns the cached value for the given key, or runs compute if the value is not in cache.

Returns None if this is a recursive invocation of get for key key.

Trait Implementations§

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impl<In, Out> Default for CopyCache<In, Out>

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fn default() -> Self

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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impl<In, Out> !RefUnwindSafe for CopyCache<In, Out>

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impl<In, Out> Send for CopyCache<In, Out>
where In: Send, Out: Send,

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impl<In, Out> !Sync for CopyCache<In, Out>

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impl<In, Out> Unpin for CopyCache<In, Out>
where In: Unpin, Out: Unpin,

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impl<In, Out> UnwindSafe for CopyCache<In, Out>
where In: UnwindSafe, Out: UnwindSafe,

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.