wasmtime_environ::component::dfg

Struct Intern

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pub struct Intern<K: EntityRef, V> { /* private fields */ }
Expand description

A helper structure to “intern” and deduplicate values of type V with an identifying key K.

Note that this can also be used where V can’t be intern’d to represent a flat list of items.

Implementations§

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impl<K, V> Intern<K, V>
where K: EntityRef,

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pub fn push(&mut self, value: V) -> K
where V: Hash + Eq + Clone,

Inserts the value specified into this set, returning either a fresh key K if this value hasn’t been seen before or otherwise returning the previous K used to represent value.

Note that this should only be used for component model items where the creation of value is not side-effectful.

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pub fn iter(&self) -> impl Iterator<Item = (K, &V)>

Returns an iterator of all the values contained within this set.

Trait Implementations§

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impl<K: EntityRef, V> Default for Intern<K, V>

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fn default() -> Intern<K, V>

Returns the “default value” for a type. Read more
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impl<K: EntityRef, V> Index<K> for Intern<K, V>

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type Output = V

The returned type after indexing.
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fn index(&self, key: K) -> &V

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

Auto Trait Implementations§

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impl<K, V> Freeze for Intern<K, V>

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impl<K, V> RefUnwindSafe for Intern<K, V>

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impl<K, V> Send for Intern<K, V>
where K: Send, V: Send,

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impl<K, V> Sync for Intern<K, V>
where K: Sync, V: Sync,

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impl<K, V> Unpin for Intern<K, V>
where K: Unpin, V: Unpin,

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impl<K, V> UnwindSafe for Intern<K, V>
where V: UnwindSafe, K: 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.