Struct SpanRegistry 

pub struct SpanRegistry { /* private fields */ }

A registry that maps string keys to Span values.

Useful for tracking where named items were defined in a source file.

Implementations

impl SpanRegistry

pub fn new() -> Self

Create an empty registry.

pub fn register(&mut self, key: impl Into<String>, span: Span)

Register a span for key.

pub fn get(&self, key: &str) -> Option<&Span>

Look up the span for key.

pub fn contains(&self, key: &str) -> bool

true if key is registered.

pub fn len(&self) -> usize

Number of registered entries.

pub fn is_empty(&self) -> bool

true if empty.

pub fn iter(&self) -> impl Iterator<Item = (&String, &Span)>

Iterate over all (key, span) pairs.

pub fn remove(&mut self, key: &str) -> Option<Span>

Remove an entry, returning its span.

pub fn merge(&mut self, other: SpanRegistry)

Merge another registry into this one (other wins on conflict).

Trait Implementations

impl Clone for SpanRegistry

fn clone(&self) -> SpanRegistry

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SpanRegistry

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

Formats the value using the given formatter.

impl Default for SpanRegistry

fn default() -> SpanRegistry

Returns the “default value” for a type.