Struct rustc_middle::ty::assoc::AssocItems

pub struct AssocItems<'tcx> {
    pub(super) items: SortedIndexMultiMap<u32, Symbol, &'tcx AssocItem>,
}

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.

Fields

items: SortedIndexMultiMap<u32, Symbol, &'tcx AssocItem>

Implementations

impl<'tcx> AssocItems<'tcx>

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

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

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.

pub fn len(&self) -> usize

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.

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.

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.

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

impl<'tcx> Clone for AssocItems<'tcx>

fn clone(&self) -> AssocItems<'tcx>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'tcx> Debug for AssocItems<'tcx>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'tcx, '__ctx> HashStable<StableHashingContext<'__ctx>> for AssocItems<'tcx>

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

impl<'tcx> PartialEq<AssocItems<'tcx>> for AssocItems<'tcx>

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

This method tests for self and other values to be equal, and is used by ==.

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.

impl<'tcx> StructuralPartialEq for AssocItems<'tcx>

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