Enum NodeKey 

pub enum NodeKey<'tcx> {
    Item(DefId),
    Mono(Instance<'tcx>),
}

Identity of a call-graph node. Distinguishes an item as defined in source from a monomorphization synthesized while building the graph.

Variants

Item(DefId)

An item as written in source (generic or not), identified by its DefId.

Mono(Instance<'tcx>)

A generic item monomorphized at concrete type/const args while building the call graph (e.g. Vec::<i32>::push). We must guarantee that the instance is fully monomorphic, i.e., the Instance’s args are all concrete types/consts.

Use NodeKey::from_instance to classify an Instance into a NodeKey.

Implementations

impl<'tcx> NodeKey<'tcx>

pub fn from_instance(instance: Instance<'tcx>) -> Self

Classifies an Instance into a NodeKey.

pub fn def_id(self) -> DefId

pub fn instance(self, tcx: TyCtxt<'tcx>) -> Instance<'tcx>

The Instance this key denotes. For an Item this rebuilds the identity instance; for a Mono it is the stored instance.

pub fn is_local_item(self) -> bool

Whether this key denotes a locally-defined function item — the source item itself or a monomorphization of it. Excludes foreign defs and non-Item instances (drop glue, fn-ptr shims, etc.), which never carry a meaningful spec. Used to decide which specs a crate owns and serializes into its own metadata.

Trait Implementations

impl<'tcx> Clone for NodeKey<'tcx>

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

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'tcx> Debug for NodeKey<'tcx>

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

Formats the value using the given formatter.

impl<'tcx, __D: TyDecoder<'tcx>> Decodable<__D> for NodeKey<'tcx>

fn decode(__decoder: &mut __D) -> Self

impl<'tcx> Display for NodeKey<'tcx>

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

Formats the value using the given formatter.

impl<'tcx, __E: TyEncoder<'tcx>> Encodable<__E> for NodeKey<'tcx>

fn encode(&self, __encoder: &mut __E)

impl<'tcx> Hash for NodeKey<'tcx>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<'tcx> PartialEq for NodeKey<'tcx>

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

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'tcx> Copy for NodeKey<'tcx>

impl<'tcx> Eq for NodeKey<'tcx>

impl<'tcx> StructuralPartialEq for NodeKey<'tcx>