pub struct AssocItems {
    items: SortedIndexMultiMap<u32, Symbol, AssocItem>,
}
Expand description

A list of ty::AssocItems in definition order that allows for efficient lookup by name.

When doing lookup by name, we try to postpone hygienic comparison for as long as possible since it is relatively expensive. Instead, items are indexed by Symbol and hygienic comparison is done only on items with the same name.

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§items: SortedIndexMultiMap<u32, Symbol, AssocItem>

Implementations§

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impl AssocItems

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pub fn new(items_in_def_order: impl IntoIterator<Item = AssocItem>) -> Self

Constructs an AssociatedItems map from a series of ty::AssocItems in definition order.

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pub fn in_definition_order(&self) -> impl '_ + Iterator<Item = &AssocItem>

Returns a slice of associated items in the order they were defined.

New code should avoid relying on definition order. If you need a particular associated item for a known trait, make that trait a lang item instead of indexing this array.

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pub fn len(&self) -> usize

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pub fn filter_by_name_unhygienic( &self, name: Symbol ) -> impl '_ + Iterator<Item = &AssocItem>

Returns an iterator over all associated items with the given name, ignoring hygiene.

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pub fn find_by_name_and_kind( &self, tcx: TyCtxt<'_>, ident: Ident, kind: AssocKind, parent_def_id: DefId ) -> Option<&AssocItem>

Returns the associated item with the given name and AssocKind, if one exists.

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pub fn find_by_name_and_kinds( &self, tcx: TyCtxt<'_>, ident: Ident, kinds: &[AssocKind], parent_def_id: DefId ) -> Option<&AssocItem>

Returns the associated item with the given name and any of AssocKind, if one exists.

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pub fn find_by_name_and_namespace( &self, tcx: TyCtxt<'_>, ident: Ident, ns: Namespace, parent_def_id: DefId ) -> Option<&AssocItem>

Returns the associated item with the given name in the given Namespace, if one exists.

Trait Implementations§

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impl Clone for AssocItems

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fn clone(&self) -> AssocItems

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 Debug for AssocItems

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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<'__ctx> HashStable<StableHashingContext<'__ctx>> for AssocItems

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fn hash_stable( &self, __hcx: &mut StableHashingContext<'__ctx>, __hasher: &mut StableHasher )

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impl PartialEq<AssocItems> for AssocItems

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fn eq(&self, other: &AssocItems) -> bool

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl StructuralPartialEq for AssocItems

Auto Trait Implementations§

Blanket Implementations§

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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 Twhere 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 Twhere 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 Twhere 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) -> Rwhere 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<Tcx, T> DepNodeParams<Tcx> for Twhere Tcx: DepContext, T: for<'a> HashStable<StableHashingContext<'a>> + Debug,

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default fn fingerprint_style() -> FingerprintStyle

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default fn to_fingerprint(&self, tcx: Tcx) -> Fingerprint

This method turns the parameters of a DepNodeConstructor into an opaque Fingerprint to be used in DepNode. Not all DepNodeParams support being turned into a Fingerprint (they don’t need to if the corresponding DepNode is anonymous).
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default fn to_debug_str(&self, _: Tcx) -> String

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default fn recover(_: Tcx, _: &DepNode) -> Option<T>

This method tries to recover the query key from the given DepNode, something which is needed when forcing DepNodes during red-green evaluation. The query system will only call this method if fingerprint_style() is not FingerprintStyle::Opaque. It is always valid to return None here, in which case incremental compilation will treat the query as having changed instead of forcing it.
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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 Twhere 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<P> IntoQueryParam<P> for P

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impl<T> MaybeResult<T> for T

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type Error = !

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fn from(_: Result<T, <T as MaybeResult<T>>::Error>) -> T

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fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>

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impl<T> ToOwned for Twhere 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<'tcx, T> ToPredicate<'tcx, T> for T

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fn to_predicate(self, _tcx: TyCtxt<'tcx>) -> T

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impl<T, U> TryFrom<U> for Twhere 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 Twhere 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<Tcx, T> Value<Tcx> for Twhere Tcx: DepContext,

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default fn from_cycle_error( tcx: Tcx, cycle: &[QueryInfo], _guar: ErrorGuaranteed ) -> T

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: 48 bytes