fallow_engine/
trace_chain.rs

1//! Symbol trace types exposed through the engine boundary.
2
3use fallow_config::ResolvedConfig;
4
5use crate::{
6    EngineError, EngineResult, core_backend, session::analyze_dead_code_with_artifacts_from_config,
7};
8
9use fallow_types::trace_chain::{SymbolChainQuery, SymbolChainTrace};
10
11/// Run symbol-level call-chain tracing through the engine boundary.
12///
13/// # Errors
14///
15/// Returns an error if parsing, graph construction, or retained module
16/// analysis fails.
17pub fn trace_symbol_chain(
18    config: &ResolvedConfig,
19    query: SymbolChainQuery<'_>,
20) -> EngineResult<Option<SymbolChainTrace>> {
21    let output = analyze_dead_code_with_artifacts_from_config(config, true, true)?;
22    let graph = output
23        .graph
24        .as_ref()
25        .ok_or_else(|| EngineError::new("trace requires a retained module graph"))?;
26    let modules = output.modules.as_deref().unwrap_or(&[]);
27    Ok(core_backend::trace_symbol_chain(
28        graph.as_graph(),
29        modules,
30        &config.root,
31        query,
32    ))
33}
fallow_engine/trace_chain.rs

fallow_engine/
trace_chain.rs
