Module blame 

Storage-neutral resumable blame slices.

Heddle owns ancestry walk, path lookup, first-parent merge policy, LCS tie-breaking, origin finalization, and provenance invariants. Callers own job rows, leases, and persistence of the returned frontier.

Structs

BlameFrontierGroup

Canonical LIFO frontier group. Replay of the same group is deterministic.

BlameFrontierRecord

One unfinalized hunk still walking toward older ancestors.

BlameLineMap

Compact run mapping state-file lines onto target-file lines.

BlameSliceLimits

Caps for one super::advance_file_blame_slice call.

BlameTarget

Prepared target file a persisted frontier may attribute.

OriginRange

Finalized target-line range. Each target line is emitted at most once.

Enums

BlamePreparation

Outcome of preparing the target path before any slice walk.

BlameSliceAdvance

Bounded slice result. Callers persist this only on success.

BlameSliceError

Typed slice failure. Missing objects are distinct from budget exhaustion.

Functions

advance_file_blame_slice

Compute one deterministic slice. On success the result is complete; on error callers must not persist half-emitted mutations.

blame_file

Walk path at state by repeating advance_file_blame_slice until the frontier is exhausted, then finalize. This is not an eager full-file shim; each slice stays inside limits.

finalize_file_provenance

Assemble FileProvenance from finalized ranges without holding history.

origin_from_state

prepare_file_blame

Build the first frontier for path at state without walking parents.