pub struct IstanbulFileCoverage { /* private fields */ }Expand description
Pre-processed per-function coverage data for a single file,
derived from Istanbul coverage-final.json.
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Source§impl IstanbulFileCoverage
impl IstanbulFileCoverage
Sourcepub fn lookup(&self, name: &str, line: u32, col: u32) -> Option<f64>
pub fn lookup(&self, name: &str, line: u32, col: u32) -> Option<f64>
Look up coverage for a function by name, start line, and start column.
Resolution order:
- Exact
(name, line, col)match. - Name-only fuzzy match within ±2 lines (tolerates formatter drift),
tie-broken by smallest
(line, col)distance from the target. - Anonymous fallback: among Istanbul
(anonymous_N)entries within ±2 lines, pick the one closest in(line, col)to the target. Bail only if two candidates tie on distance, which would be genuinely ambiguous.
Step 3 covers arrow-function exports where fallow extracts the binding
identifier (const myHandler = () => {...} yields myHandler) while
Istanbul records the function as anonymous. load_istanbul_coverage
indexes declaration aliases so standard Istanbul producers still
participate in this fallback. See issues #155, #166, #181, and #370.
Auto Trait Implementations§
impl Freeze for IstanbulFileCoverage
impl RefUnwindSafe for IstanbulFileCoverage
impl Send for IstanbulFileCoverage
impl Sync for IstanbulFileCoverage
impl Unpin for IstanbulFileCoverage
impl UnsafeUnpin for IstanbulFileCoverage
impl UnwindSafe for IstanbulFileCoverage
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