Struct ContextRegions 

pub struct ContextRegions { /* private fields */ }

Per-line region membership precomputed once per chunk.

is_in_encrypted_block and is_in_test_function both depend only on the surrounding lines, so when many matches land in the same function the per-match 10/100-line backward walks recompute identical answers. Building these flags in a single forward pass turns the per-match work into an O(1) lookup, converting O(matches * 100) line scans into O(lines) once per chunk.

Implementations

impl ContextRegions

pub fn new(lines: &[&str]) -> Self

Build the region table in a single forward pass over lines.