Add tvm.ExtractOpcode util fn

[krebernisak]

No description provided.

[github-actions]

👋 krebernisak, thanks for creating this pull request!

To help reviewers, please consider creating future PRs as drafts first. This allows you to self-review and make any final changes before notifying the team.

Once you're ready, you can mark it as "Ready for review" to request feedback. Thanks!

[Copilot]

Pull request overview

This PR introduces a reusable ExtractOpcode utility function in the pkg/ton/tvm package to consolidate opcode extraction logic across the codebase.

Changes:

• Added ExtractOpcode function in a new pkg/ton/tvm/cell.go file
• Refactored pkg/ton/message/message.go to use the new utility function
• Removed duplicate extractOpcode function from deployment/pkg/ops/ton/send.go in favor of the shared utility

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
pkg/ton/tvm/cell.go	New file introducing the shared ExtractOpcode utility function
pkg/ton/message/message.go	Refactored to use the new tvm.ExtractOpcode function and improved error handling
deployment/pkg/ops/ton/send.go	Removed duplicate implementation in favor of the shared utility

Comments suppressed due to low confidence (1)

pkg/ton/message/message.go:1

• The slice s is created fresh from payload.BeginParse(), so it includes the opcode bits. Since the opcode was already extracted via tvm.ExtractOpcode(payload), this should skip the first 32 bits before checking BitsLeft(). The current logic incorrectly includes the opcode in the remaining body.

package message

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.