Enum EdgeKind 

pub enum EdgeKind {
    Depends,
    RefCall,
    DefinesBinding,
    Exports,
    ResolvesTo,
    RefImports,
    IsImplementation,
    Overrides,
    FFICall,
}

The kinds of edges supported in the Travsr multiplex graph.

Variants

Depends

File / module import. Corresponds to Kythe %kythe/edge/depends.

RefCall

Call-site reference. Corresponds to Kythe %kythe/edge/ref/call.

DefinesBinding

Definition-binding edge (parent → child in the AST).

Exports

A symbol exported from a module.

ResolvesTo

An import node resolved to the file node it targets. Connects import:./foo → file:foo.ts, enabling transitive caller traversal across file boundaries.

RefImports

Named import specifier reference emitted by the LSIF pipeline. Distinguishes semantic import references from file-level Depends edges.

IsImplementation

Class-to-interface implementation edge emitted by the LSIF pipeline.

Overrides

Method override edge emitted by the LSIF pipeline when a subclass method shadows a same-named method in the base class.

FFICall

Cross-language FFI call edge (RFC-005). Confidence lives on Edge.confidence so EdgeKind stays Copy. PPR weight: 0.85 (ADR-003 amendment, 2026-05-24).

Implementations

impl EdgeKind

pub fn as_str(self) -> &'static str

Stable string representation used as the storage key.

pub fn ppr_weight(self) -> f32

PPR transition weight for this edge kind.

Weights encode the semantic importance of each edge type for Personalized PageRank: a higher weight means PPR mass flows more readily across edges of this kind, producing higher scores for reachable nodes.

Rationale (DEBT-016 / ADR-003)

Kind	Weight	Reasoning
RefCall	1.00	Direct call — strongest semantic link
DefinesBinding	0.70	Parent→child definition — strong structural link
Exports	0.60	Exported API surface — important for callers
Depends	0.50	File import — broad but less targeted
ResolvesTo	0.50	Import→file resolution — same as Depends
RefImports	0.40	Named import specifier — narrower than file import
IsImplementation	0.40	Class implements interface — type-system link
Overrides	0.30	Method override — weakest semantic tie

Weights are normalised per-node at PPR iteration time so their absolute scale does not matter — only the ratios between kinds.

pub fn from_str(s: &str) -> Option<Self>

Parse from the stable string representation.

Trait Implementations

impl Clone for EdgeKind

fn clone(&self) -> EdgeKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EdgeKind

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for EdgeKind

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for EdgeKind

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 PartialEq for EdgeKind

fn eq(&self, other: &EdgeKind) -> 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 Serialize for EdgeKind

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for EdgeKind

impl Eq for EdgeKind

impl StructuralPartialEq for EdgeKind