Enum RefKind 

pub enum RefKind {
    Free,
    Method,
    Value,
}

The syntactic shape of a call site.

A name alone cannot distinguish chain() from x.chain(), and conflating them makes the resolver attribute a std or dependency method to a same-named free function that happens to be the only one in the view (#223). Recording the shape keeps that judgement possible at resolution time.

Variants

Free

A plain call — foo() — or a path call such as a::b::foo().

Method

A call through a receiver whose type is unknown — x.foo(). The callee belongs to whatever x is, which the graph does not know, so it may well be defined outside the view entirely.

Value

A name used as a value rather than called — and_then(helper).

Not a call edge, and deliberately kept out of callers/callees and the impact walk. It exists so unreferenced can tell a live callback from a dead function: a path expression records no call, so a function only ever passed as a value looked unused and was reported as deletable (#250).

Over-inclusive by construction. Extraction is per-file, so it cannot tell an identifier naming a function from one naming a local; both are recorded. For unreferenced that errs towards not calling something dead, which is the safe direction.

Implementations

impl RefKind

pub fn is_free(&self) -> bool

Whether this is the default, Free shape.

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

Lowercase name, matching the snake_case serde representation. Used as the stored value in the persistent graph.

pub fn from_str_or_free(raw: &str) -> Self

Parse from as_str. Anything unrecognized — including a row written before the column existed — reads as Free, the pre-existing behaviour.

Trait Implementations

impl Clone for RefKind

fn clone(&self) -> RefKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for RefKind

impl Debug for RefKind

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

Formats the value using the given formatter.

impl Default for RefKind

fn default() -> RefKind

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for RefKind

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for RefKind

impl PartialEq for RefKind

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for RefKind

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for RefKind