[CORE] Build Low-Level Assembly Batch Event Emitter

[mijinummi]

Labels: high-difficulty, yul, events, gasguard
Difficulty: High
Module: contracts/events/

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🧠 Concept

Implement a low-level event logging utility in Yul assembly that emits batch execution summaries using raw log1, log2, or log3 opcodes.

⚠️ Problem

Emitting events in high-frequency loops using standard Solidity syntax allocates memory and executes repeated ABI encoding for each log item.

📁 Implementation Scope

• contracts/events/BatchLogEngine.sol
• test/events/BatchLogEngine.test.ts

🛠️ Requirements

1. Construct topic arrays and log payload buffers directly in scratch memory (0x00--0x40).
2. Trigger event logging using the inline assembly opcode log2(memPtr, size, topic1, topic2).

🎯 Acceptance Criteria

• Emits batched operational logs with significantly lower gas usage per event.
• Emitted logs match expected topic structures in indexer simulations.

[muizbolaji4]

@muizbolaji4 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hello maintainer, This issue matches my experience, and I'd appreciate the opportunity to work on it.

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[Johnpii1]

@Johnpii1 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hello Sir,

I came across your project and I’m really interested in contributing.

I have experience with React for building responsive, user-friendly interfaces, and I’m also familiar with smart contracts and blockchain basics. I focus on writing clean, scalable code and improving user experience.

I’m a fast learner and ready to get started immediately. Please let me know the next steps.

Thank you.

Best regards,
Johnpaul

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[Yodomite]

@Yodomite has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hello, pls i will like to work on this issue

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[Chinonso-Peter]

@Chinonso-Peter has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Can i work on this

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[pimaster900]

@pimaster900 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

I would sincerely love to work on this issue because I have strong experience in working and dealing with complex workflow logic.

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[sulaimonifeoluwa4-blip]

@sulaimonifeoluwa4-blip has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

hi can i work on this

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[Alimzy]

@Alimzy has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hi! I'd like to work on this issue.

I'm a software engineer with hands-on experience in testing, debugging, and building reliable features across the stack. I'm confident I can take this on and deliver a solid, well-tested solution that follows the project's existing conventions.

I'll make sure to cover the core functionality as well as relevant edge cases to keep things reliable and regression-resistant.

Let me know if I can get started, and I'll provide updates as I progress.

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[BrightHeart23]

@BrightHeart23 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hi Maintainer,

I'd like to work on this issue. I'll implement the low-level Yul event emitter using the log2 opcode with scratch memory for payload and topic construction, validate the emitted logs against the expected topic structure, and add comprehensive tests to verify correctness and gas efficiency. I'll ensure the implementation integrates cleanly with the existing contracts and passes all CI checks.

Please assign this issue to me if it's available. Thank you.

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[Cedarich]

@Cedarich has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

hi maintainer can I take up this issue

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[Richardkingz2019]

@Richardkingz2019 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

I would love to work on this issue

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[silifatzoffun74-art]

@silifatzoffun74-art has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hi! I'd like to work on this issue.

I'm a software engineer with hands-on experience in testing, debugging, and building reliable features across the stack. I'm confident I can take this on and deliver a solid, well-tested solution that follows the project's existing conventions.

I'll make sure to cover the core functionality as well as relevant edge cases to keep things reliable and regression-resistant.

Let me know if I can get started, and I'll provide updates as I progress.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @silifatzoffun74-art to this issue.

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Congratulations, @Cedarich! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on July 30, 2026.

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