⚡ Bolt: [performance improvement] - #388
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Co-authored-by: Lucenx9 <185146821+Lucenx9@users.noreply.github.com>
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📝 WalkthroughWalkthrough
ChangesTab insertion ownership flow
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| near_surface_id: &str, | ||
| new_tab_id: SurfaceId, | ||
| ) -> bool { | ||
| ) -> Result<(), SurfaceId> { |
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The signature now returns Result<(), SurfaceId>, but the adjacent rustdoc still says it “Returns true if found” and omits the ownership-threading contract that Err returns the unused ID. This makes the helper's documented contract contradict its API and hides the invariant the optimization depends on; document Ok(()) on insertion and Err(new_tab_id) on a miss.
AGENTS.md reference: AGENTS.md:L171-L171
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| @@ -0,0 +1,3 @@ | |||
| ## 2024-08-03 - [Avoid clone in pane_tree's push_tab_to_leaf] | |||
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.jules root bucket
This introduces a new top-level directory solely for a note about one private pane-tree helper; a repo-wide search finds no consumer or generator for it, and the repository previously removed a stale file at this same path. Keep implementation rationale beside the owning helper or omit this automation diary rather than creating a non-durable root content category.
AGENTS.md reference: AGENTS.md:L131-L131
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🧹 Nitpick comments (2)
crates/forktty-core/src/model.rs (1)
1310-1310: 🚀 Performance & Scalability | 🔵 Trivial | ⚡ Quick winPass
new_idby ownership intopush_tab_to_leaf.Line [1310] calls
new_id.clone()even though the helper now transfers the ID throughResult<(), SurfaceId>. Passnew_iddirectly. After success, set focus fromnew_surface.id.clone(). This removes one caller-side allocation and completes the ownership-preserving optimization.Suggested change
- if push_tab_to_leaf(&mut workspace.pane_tree, near_surface_id, new_id.clone()).is_err() { + if push_tab_to_leaf(&mut workspace.pane_tree, near_surface_id, new_id).is_err() { return None; } - workspace.focused_surface_id = new_id.clone(); + workspace.focused_surface_id = new_surface.id.clone();🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In `@crates/forktty-core/src/model.rs` at line 1310, Update the call to push_tab_to_leaf in the surrounding workspace pane-tree flow to pass new_id by ownership instead of cloning it. After a successful insertion, derive focus from new_surface.id.clone() so the ownership transfer remains intact and the focus behavior is preserved.crates/forktty-core/src/model/pane_tree.rs (1)
650-670: 🎯 Functional Correctness | 🔵 Trivial | ⚡ Quick winAdd invariant coverage for
push_tab_to_leafownership flows.
push_tab_to_leafis only tested throughadd_tab, which covers the happy first-leaf case. Add direct model-level tests for the same-leaf first child, a later split child, nested splits, and a target missing from the tree. Assert that successful insertions only update the target leaf and that the missing-targetErrvalue is the inputSurfaceIdwith the pane tree unchanged.🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In `@crates/forktty-core/src/model/pane_tree.rs` around lines 650 - 670, Add direct model-level tests for push_tab_to_leaf covering insertion into the first leaf, a later child of a split, nested split traversal, and a missing target. Verify each successful case appends only to the matching leaf and updates its active index, while the missing-target case returns the original input SurfaceId and leaves the entire pane tree unchanged.Source: Coding guidelines
🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
Nitpick comments:
In `@crates/forktty-core/src/model.rs`:
- Line 1310: Update the call to push_tab_to_leaf in the surrounding workspace
pane-tree flow to pass new_id by ownership instead of cloning it. After a
successful insertion, derive focus from new_surface.id.clone() so the ownership
transfer remains intact and the focus behavior is preserved.
In `@crates/forktty-core/src/model/pane_tree.rs`:
- Around line 650-670: Add direct model-level tests for push_tab_to_leaf
covering insertion into the first leaf, a later child of a split, nested split
traversal, and a missing target. Verify each successful case appends only to the
matching leaf and updates its active index, while the missing-target case
returns the original input SurfaceId and leaves the entire pane tree unchanged.
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📒 Files selected for processing (3)
.jules/bolt.mdcrates/forktty-core/src/model.rscrates/forktty-core/src/model/pane_tree.rs
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💡 What: Changed the return type of
push_tab_to_leaffrombooltoResult<(), SurfaceId>and implemented a manual loop for thePaneNode::Splitarm.🎯 Why:
push_tab_to_leafwas calling.clone()on theSurfaceIdstring inside the.any()closure for every child of a split node, causing an O(N) heap allocation overhead when scanning the tree.📊 Impact: Eliminates unnecessary
Stringheap allocations on cache misses during terminal splits and tree traversal by utilizing "ownership threading" - returning the rejected ID in theErrvariant to be reused in the next loop iteration.🔬 Measurement: Validated via unit tests in
forktty-coreensuring that the topological insert continues to work flawlessly. Code is linted viacargo clippy.PR created automatically by Jules for task 14734846095376111947 started by @Lucenx9
Summary
push_tab_to_leafnow returnsResult<(), SurfaceId>.SurfaceIdvalues and avoids redundant cloning and allocations.WorkspaceModel::add_tabhandles insertion failure through the new result type.cargo clippypasses.