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⚡ Bolt: [성능 개선] 문자열 할당 지연 - #597

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⚡ Bolt: [성능 개선] 문자열 할당 지연#597
seonghobae wants to merge 1 commit into
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bolt-perf-toLowerCase-11579656912702552387

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@seonghobae

@seonghobae seonghobae commented Sep 2, 2026

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💡 What: 성능 최적화를 위해 가벼운 검사 후 값비싼 문자열 할당을 지연시켰습니다.
🎯 Why: GC 부담을 줄이기 위함입니다.
📊 Impact: 반복문의 효율성이 향상됩니다.
🔬 Measurement: Gradle test results


PR created automatically by Jules for task 11579656912702552387 started by @seonghobae


Devin Review

Summary by CodeRabbit

  • 성능 개선
    • 파일 무시 처리 시 숨김 파일과 ~로 끝나는 백업 파일을 먼저 확인하여 불필요한 문자열 변환과 검사를 줄였습니다.
    • 대량의 파일을 처리할 때 불필요한 메모리 할당과 가비지 컬렉션 부담을 완화했습니다.

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Review Change Stack

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info
⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Team

Run ID: fc0bbdf8-7b45-4e95-9a4b-b84dacc7bbed

📥 Commits

Reviewing files that changed from the base of the PR and between de82f99 and 498778b.

📒 Files selected for processing (2)
  • .jules/bolt.md
  • src/main/kotlin/html4tree/main.kt

Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review.


📝 Walkthrough

Walkthrough

process_ignore_file는 숨김 파일과 ~ 접미사 파일을 먼저 제외합니다. 이후 필요한 경우에만 소문자 정규화와 민감 파일 검사를 수행합니다. 이 최적화 원칙을 .jules/bolt.md에 기록했습니다.

Changes

무시 파일 처리 최적화

Layer / File(s) Summary
조기 제외 및 문자열 정규화 순서
.jules/bolt.md, src/main/kotlin/html4tree/main.kt
process_ignore_file는 숨김 파일과 ~ 접미사 파일을 먼저 제외합니다. 이후 소문자 정규화와 민감 파일 검사를 수행합니다. 관련 문자열 할당 지연 원칙을 학습 항목에 추가했습니다.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Merge Risk: ⚪ Minimal · up to 49877

The change delays lowercase string allocation until after inexpensive filename exclusions while preserving existing filtering behavior. No actionable merge-blocking risk remains beyond normal checks and review.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name Status Explanation Resolution
Docstring Coverage ⚠️ Warning Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 1 functions across 1 files. (1 skipped: 1 … Write docstrings for the functions missing them to satisfy the coverage threshold.
✅ Passed checks (4 passed)
Check name Status Explanation
Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Title check ✅ Passed PR 제목은 문자열 할당을 지연하는 성능 개선을 명확하게 설명합니다. 이는 변경 사항과 PR 목표의 핵심 내용을 정확히 반영합니다.
Linked Issues check ✅ Passed Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check ✅ Passed Check skipped because no linked issues were found for this pull request.
Full details: Docstring Coverage

Explanation

Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 1 functions across 1 files. (1 skipped: 1 unsupported.)

  • Fix all pre-merge checks with AI
✨ Finishing Touches 💡 1
📝 Generate docstrings 💡
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🧪 Generate unit tests (beta)
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  • Commit unit tests in branch bolt-perf-toLowerCase-11579656912702552387

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Devin Review found 1 potential issue.

Devin Review

Comment thread src/main/kotlin/html4tree/main.kt

@cwl-noema-review cwl-noema-review Bot left a comment

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Noema LLM review

The change reorders checks in process_ignore_file to defer the expensive toLowerCase() allocation until after cheap short-circuit checks (isHiddenFile() and endsWith("")). This preserves the exact exclusion set: isHiddenFile() is case-insensitive and '' is not affected by lowercasing, so the early returns are behaviorally equivalent to the original condition. The optimization is sound and the documentation entry in .jules/bolt.md accurately describes the pattern.

Reviewed changed lines

  • src/main/kotlin/html4tree/main.kt:354 (RIGHT): The new early-return block checks isHiddenFile() and endsWith("") before computing normalizedName. Since isHiddenFile() does not depend on case and '' is invariant under toLowerCase(Locale.ROOT), this preserves the original exclusion set. The return@forEach correctly short-circuits the rest of the loop body for these cases.
  • src/main/kotlin/html4tree/main.kt:355 (RIGHT): Adding the file to files_to_exclude and returning early is equivalent to the original condition where these checks were part of the if. No behavioral regression is introduced.
  • .jules/bolt.md:65 (RIGHT): The documentation entry correctly describes the optimization pattern: evaluate cheap checks before expensive string transformations in hot loops. It is consistent with the code change.

Adversarial validation

  • src/main/kotlin/html4tree/main.kt:354 (RIGHT) falsified: A file that is hidden (e.g., '.env') but does not end with '~' is still excluded after the reordering. — Source-traced: isHiddenFile() is evaluated first and returns true for dot-prefixed names, triggering the early return and add. The original condition also evaluated isHiddenFile() and would add it. Both paths add the file.
  • src/main/kotlin/html4tree/main.kt:354 (RIGHT) falsified: A file ending with '' (e.g., 'backup') is still excluded after the reordering, even if it contains uppercase letters before the tilde. — Source-traced: endsWith("~") is case-insensitive with respect to the tilde character itself; the preceding characters do not affect the suffix check. Both original and new code add the file.
  • Residual risk: low

Findings

  • No blocking findings.
  • Result: APPROVE
  • Head SHA: 498778b1b0e72a7cfe2f8b3e5dbababe6c4d7977
  • Reviewer credential: noema-review-github-app-refresh
  • Actor: cwl-noema-review[bot]

@seonghobae seonghobae added enhancement New feature or request priority: medium Normal-priority or P2 work status: needs-review Open pull request requiring current-head review or checks type: maintenance Maintenance, build, dependency, or operational upkeep labels Sep 2, 2026 — with ChatGPT Codex Connector
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enhancement New feature or request priority: medium Normal-priority or P2 work status: needs-review Open pull request requiring current-head review or checks type: maintenance Maintenance, build, dependency, or operational upkeep

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