⚡ Bolt: [performance improvement] - #387
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Replaces the eager `.to_lowercase()` call and `String` allocations with `std::borrow::Cow` in `normalize_agent_name`. It now checks for uppercase characters before allocating and returns borrowed strings for literal matches, eliminating an unnecessary double-allocation in the happy path. Co-authored-by: Lucenx9 <185146821+Lucenx9@users.noreply.github.com>
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📝 WalkthroughWalkthroughChangesAgent name normalization
Estimated code review effort: 2 (Simple) | ~10 minutes Suggested labels: 🚥 Pre-merge checks | ✅ 5 | ❌ 1❌ Failed checks (1 inconclusive)
✅ Passed checks (5 passed)
✨ Finishing Touches📝 Generate docstrings
🧪 Generate unit tests (beta)
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| ## 2024-08-02 - [Cow Optimization for String Processing] | |||
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This task-specific optimization note introduces .jules/ as a new top-level content category even though it only documents this hooks implementation change and has no lasting product or tooling role. Remove it or place any durable documentation near the owning hooks module so the repository does not accumulate tool-specific scratch directories.
AGENTS.md reference: AGENTS.md:L131-L131
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🧹 Nitpick comments (2)
crates/forktty-ui-gtk/src/socket_cli/hooks/install.rs (1)
273-285: 📐 Maintainability & Code Quality | 🔵 Trivial | ⚡ Quick winAdd regression coverage for the
Cowcontract.Test canonical names, all aliases, and mixed-case input. Assert the normalized text and the expected
Cow::BorrowedorCow::Ownedvariant. Add one CLI lookup test for a mixed-case alias.As per coding guidelines: “Add behavior-boundary tests for CLI output, socket JSON responses, and model/store invariants during extraction or refactoring.”
🤖 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-ui-gtk/src/socket_cli/hooks/install.rs` around lines 273 - 285, Add regression tests around normalize_agent_name covering canonical names, every supported alias, and mixed-case inputs; assert both normalized text and whether the result is Cow::Borrowed or Cow::Owned. Add a CLI lookup test that resolves a mixed-case alias and verifies the expected agent. Use the existing test utilities and symbols in the install hook and CLI lookup test modules.Source: Coding guidelines
crates/forktty-ui-gtk/src/socket_cli/hooks.rs (1)
933-933: 🚀 Performance & Scalability | 🔵 Trivial | ⚡ Quick winPreserve the borrowed
Cowat both lookup call sites.Both changed call sites call
.into_owned()beforeagent_spec. This allocates forCow::Borrowedresults and removes the optimization at those call sites.
crates/forktty-ui-gtk/src/socket_cli/hooks.rs#L933-L933: remove.into_owned()beforeagent_spec.crates/forktty-ui-gtk/src/socket_cli/hooks/event.rs#L38-L38: remove.into_owned()beforeagent_spec.The supplied lookup bodies do not retain the normalized name.
🤖 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-ui-gtk/src/socket_cli/hooks.rs` at line 933, Preserve the borrowed Cow returned by normalize_agent_name at both agent_spec lookup call sites: remove into_owned() in crates/forktty-ui-gtk/src/socket_cli/hooks.rs:933-933 and crates/forktty-ui-gtk/src/socket_cli/hooks/event.rs:38-38. The agent_spec lookup does not retain the normalized name, so pass the Cow directly.
🤖 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-ui-gtk/src/socket_cli/hooks.rs`:
- Line 933: Preserve the borrowed Cow returned by normalize_agent_name at both
agent_spec lookup call sites: remove into_owned() in
crates/forktty-ui-gtk/src/socket_cli/hooks.rs:933-933 and
crates/forktty-ui-gtk/src/socket_cli/hooks/event.rs:38-38. The agent_spec lookup
does not retain the normalized name, so pass the Cow directly.
In `@crates/forktty-ui-gtk/src/socket_cli/hooks/install.rs`:
- Around line 273-285: Add regression tests around normalize_agent_name covering
canonical names, every supported alias, and mixed-case inputs; assert both
normalized text and whether the result is Cow::Borrowed or Cow::Owned. Add a CLI
lookup test that resolves a mixed-case alias and verifies the expected agent.
Use the existing test utilities and symbols in the install hook and CLI lookup
test modules.
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📒 Files selected for processing (4)
.jules/bolt.mdcrates/forktty-ui-gtk/src/socket_cli/hooks.rscrates/forktty-ui-gtk/src/socket_cli/hooks/event.rscrates/forktty-ui-gtk/src/socket_cli/hooks/install.rs
1 participant
💡 What: Refactored
normalize_agent_nameto returnstd::borrow::Cow<'_, str>instead ofString. The function now checks if the string contains uppercase characters before calling.to_lowercase(), and returnsCow::Borrowedfor static literal matches. Call sites have been updated to.into_owned()where necessary.🎯 Why:
str::to_lowercase()eagerly allocates aStringbuffer. By parsing agent names (which are mostly already lowercase), the application incurred a 100% redundant heap allocation penalty for the lowercase conversion, and a second allocation for mapping it to a known literal (like"claude".to_string()).📊 Impact: Reduces string allocations for
normalize_agent_namefrom 2 to 0 for known valid agent names (the happy path).🔬 Measurement: Verified by running the test suite (
cargo test -p forktty-ui-gtk --no-default-features), which passed successfully, confirming correctness. Tested locally viatest_normalize.rsto assert thatCow::Borrowedis successfully returned for unchanged strings.PR created automatically by Jules for task 11917458976536241630 started by @Lucenx9
Summary
normalize_agent_nameto returnCow<'_, str>.Cow::Borrowed.