Struct TurnDiffTracker 

pub struct TurnDiffTracker { /* private fields */ }

Tracks sets of changes to files and exposes the overall unified diff. Internally, the way this works is now:

1. Maintain an in-memory baseline snapshot of files when they are first seen. For new additions, do not create a baseline so that diffs are shown as proper additions (using /dev/null).
2. Keep a stable internal filename (uuid) per external path for rename tracking.
3. To compute the aggregated unified diff, compare each baseline snapshot to the current file on disk entirely in-memory using the similar crate and emit unified diffs with rewritten external paths.

Implementations

impl TurnDiffTracker

pub fn new() -> Self

pub fn on_patch_begin(&mut self, changes: &HashMap<PathBuf, FileChange>)

Front-run apply patch calls to track the starting contents of any modified files.

• Creates an in-memory baseline snapshot for files that already exist on disk when first seen.
• For additions, we intentionally do not create a baseline snapshot so that diffs are proper additions.
• Also updates internal mappings for move/rename events.

pub fn get_unified_diff(&mut self) -> Result<Option<String>>

Recompute the aggregated unified diff by comparing all of the in-memory snapshots that were collected before the first time they were touched by apply_patch during this turn with the current repo state.

Trait Implementations

impl Default for TurnDiffTracker

fn default() -> TurnDiffTracker

Returns the “default value” for a type.