Struct MetadataSampler 

pub struct MetadataSampler { /* private fields */ }

A sampler that extracts metadata from nodes as-is, useful for exposing node properties (language, extension, has_tests) into the annotation pipeline without transformation.

Implementations

impl MetadataSampler

pub fn new(keys: Vec<String>) -> Self

Create a sampler that extracts the specified metadata keys.

pub fn all() -> Self

Extract all available metadata.

Trait Implementations

impl Sampler for MetadataSampler

fn id(&self) -> &str

Stable identifier (used as key in annotation maps and persistence).

fn compute( &self, ctx: &SampleContext<'_>, ) -> Result<Option<Value>, SamplerError>

Compute the artifact for a single node. Return Ok(None) to skip a node without error.

fn selector(&self) -> NodeSelector

Which nodes this sampler operates on.

fn sample( &self, graph: &SourceCodeGraph, annotations: &AnnotationMap, ) -> Result<SampleResult, SamplerError>

Run the full sampling pass over a graph.