[−][src]Struct rustc_trait_selection::traits::specialization_graph::LeafDef

pub struct LeafDef {
    pub item: AssocItem,
    pub defining_node: Node,
    pub finalizing_node: Option<Node>,
}

Information about the most specialized definition of an associated item.

Fields

item: AssocItem

The associated item described by this LeafDef.

defining_node: Node

The node in the specialization graph containing the definition of item.

finalizing_node: Option<Node>

The "top-most" (ie. least specialized) specialization graph node that finalized the definition of item.

Example:

trait Tr {
    fn assoc(&self);
}

impl<T> Tr for T {
    default fn assoc(&self) {}
}

impl Tr for u8 {}

If we start the leaf definition search at impl Tr for u8, that impl will be the finalizing_node, while defining_node will be the generic impl.

If the leaf definition search is started at the generic impl, finalizing_node will be None, since the most specialized impl we found still allows overriding the method (doesn't finalize it).

Auto Trait Implementations

impl RefUnwindSafe for LeafDef[src]

impl !Send for LeafDef[src]

impl !Sync for LeafDef[src]

impl Unpin for LeafDef[src]

impl UnwindSafe for LeafDef[src]

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized, [src]

impl<T> Borrow<T> for T where
    T: ?Sized, [src]

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, [src]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

impl<T> WithConstness for T[src]