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Module git

mati_core::analysis

Module git 

Source
Expand description

Git history mining — Layer 0 signal extraction via git2.

Single-pass revwalk over full history (capped at MAX_COMMITS non-merge commits) to extract per-file change frequency, last author, hotspot detection, rename tracking, and co-change pairs.

§Performance

  • Commit cap keeps large repos predictable: O(5k) not O(all history).
  • Merge commits skipped (no signal) and don’t count toward the cap.
  • Bulk commits (>50 files) skipped for co-change pairs (O(n²) avoidance).
  • context_lines(0) + no hunk/line callbacks: git2 skips content diffing.
  • walked_files HashSet: O(1) per-delta membership check.

§Graceful degradation (P9)

All errors return Ok(GitSignals::empty()) — never fatal. No .git directory, unborn HEAD, shallow clones — all handled silently.

Structs§

GitSignals
Git-derived signals for an entire repository, keyed by repo-relative path.

Functions§

mine_git_history
Single-pass revwalk over full history (capped at MAX_COMMITS non-merge commits).