Detect Expensive String Operations

[mijinummi]

🧠 Concept

Identify gas-heavy string manipulations.

⚠️ Problem

String operations are costly on-chain.

📁 Implementation Scope

• rules/solidity/gas/

✅ Requirements

• Detect concatenation patterns
• Suggest bytes alternatives

🎯 Acceptance Criteria

• Expensive string operations detected

[fadee26]

@fadee26 has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Hello maintainer can i take up this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @fadee26 to this issue.

[drips-wave]

Congratulations, @fadee26! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 2, 2026.

🧑‍💻 @fadee26: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are awarded when this issue is marked as completed by the maintainer.

🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.

🌊 Happy Wave 🌊

[drips-wave]

This issue has been marked as completed by a Drips Wave moderator for @fadee26 as part of the Stellar Wave Program's 5th Wave 🥳

Moderator's reason: [Auto-assessed] PR #419 was merged and specifically addresses issue #292 by implementing a new rule (sol-010) to detect expensive string operations in Solidity. The implementation includes regex patterns for common concatenation methods and suggests using bytes as an alternative, fulfilling the issue requirements.

😎 @fadee26: You earned 200 Points for completing this issue! After the current Wave ends, you'll be eligible for a percentage of the Wave's reward pool based on the percentage of total points you've earned. Learn more here.

🧑‍💻 Repo maintainers: How'd the contributor do? Leave a review to share your experience working with them.

ℹ️ Note: This issue was marked complete via moderation. Points were issued even though the GitHub issue remains open.