wasmtime_environ::component

Struct NameMap

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pub struct NameMap<K: Clone + Hash + Eq + Ord, V> { /* private fields */ }
Expand description

A semver-aware map for imports/exports of a component.

This data structure is used when looking up the names of imports/exports of a component to enable semver-compatible matching of lookups. This will enable lookups of a:b/c@0.2.0 to match entries defined as a:b/c@0.2.1 which is currently considered a key feature of WASI’s compatibility story.

On the outside this looks like a map of K to V.

Implementations§

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impl<K, V> NameMap<K, V>
where K: Clone + Hash + Eq + Ord,

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pub fn insert<I>( &mut self, name: &str, cx: &mut I, allow_shadowing: bool, item: V, ) -> Result<K>
where I: NameMapIntern<Key = K>,

Inserts the name specified into this map.

The name is intern’d through the cx argument and shadowing is controlled by the allow_shadowing variable.

This function will automatically insert an entry in self.alternate_lookups if name is a semver-looking name.

Returns an error if allow_shadowing is false and the name is already present in this map (by exact match). Otherwise returns the intern’d version of name.

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pub fn get<I>(&self, name: &str, cx: &I) -> Option<&V>
where I: NameMapIntern<Key = K>,

Looks up name within this map, using the interning specified by cx.

This may return a definition even if name wasn’t exactly defined in this map, such as looking up a:b/c@0.2.0 when the map only has a:b/c@0.2.1 defined.

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

Returns an iterator over inserted values in this map.

Note that the iterator return yields intern’d keys and additionally does not do anything special with semver names and such, it only literally yields what’s been inserted with NameMap::insert.

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pub fn raw_get_mut(&mut self, key: &K) -> Option<&mut V>

TODO

Trait Implementations§

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impl<K: Clone + Clone + Hash + Eq + Ord, V: Clone> Clone for NameMap<K, V>

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fn clone(&self) -> NameMap<K, V>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<K: Debug + Clone + Hash + Eq + Ord, V: Debug> Debug for NameMap<K, V>

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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<K, V> Default for NameMap<K, V>
where K: Clone + Hash + Eq + Ord,

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

Returns the “default value” for a type. Read more
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impl<'de, K, V> Deserialize<'de> for NameMap<K, V>
where K: Deserialize<'de> + Clone + Hash + Eq + Ord, V: Deserialize<'de>,

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl<K, V> Serialize for NameMap<K, V>
where K: Serialize + Clone + Hash + Eq + Ord, V: Serialize,

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more

Auto Trait Implementations§

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

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

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

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

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

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impl<K, V> UnwindSafe for NameMap<K, V>
where K: UnwindSafe, V: 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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. 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> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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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<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,