Hello, I'm Maneshwar. I'm working on git-lrc: a Git hook for Checking AI generated code.
AI agents write code fast. They also silently remove logic, change behavior, and introduce bugs -- without telling you. You often find out in production.
git-lrc fixes this. It hooks into git commit and reviews every diff before it lands. 60-second setup. Completely free.
Yesterday we wrapped up the Pager module the layer that shields SQLite from hardware chaos.
Today we climb one level higher.
Above the tree module. Above the pager. Right at the heart of SQLite.
This is where SQL actually comes alive.
Welcome to the Virtual Machine (VM) also known as the Virtual Database Engine (VDBE).
The VM: Where SQL Becomes Action
If the pager ensures correctness, and the B-/B+-trees ensure structure, the VM ensures behavior.
It is the only module in the backend that actively thinks.
Everything below it is passive:
- The pager moves pages.
- The tree module rearranges nodes.
- The OS reads and writes bytes.
But the VM?
It executes programs.
Not SQL directly, SQL is first compiled into bytecode. The VM then executes that bytecode instruction by instruction.
Think of it this way:
SQL → Parser → Query Planner → Bytecode → VM → Tree Module → Pager
The VM sits exactly between the frontend (SQL world) and the backend (storage world).
The Five Primitive Types
SQLite famously supports dynamic typing, but internally the VM works with five primitive datatypes:
- NULL
- INTEGER
- REAL
- TEXT (character string)
- BLOB
These types exist both:
- On disk (in records stored inside B-trees)
- In memory (inside VM registers)
The translation between user data and internal representation happens exclusively inside the VM.
That’s important.
If a query requires:
SELECT 5 + '10';
The VM performs the conversion.
Not the tree. Not the pager.
On-the-fly type coercion is one of the VM’s most critical jobs.
Coming Next: Bytecode: SQLite’s Internal Programming Language
👉 Check out: git-lrc
Any feedback or contributors are welcome! It’s online, source-available, and ready for anyone to use.
⭐ Star it on GitHub:
HexmosTech
/
git-lrc
Free, Unlimited AI Code Reviews That Run on Commit
git-lrc
Free, Unlimited AI Code Reviews That Run on Commit
AI agents write code fast. They also silently remove logic, change behavior, and introduce bugs -- without telling you. You often find out in production.
git-lrc fixes this. It hooks into git commit and reviews every diff before it lands. 60-second setup. Completely free.
See It In Action
See git-lrc catch serious security issues such as leaked credentials, expensive cloud operations, and sensitive material in log statements
git-lrc-intro-60s.mp4
Why
- 🤖 AI agents silently break things. Code removed. Logic changed. Edge cases gone. You won't notice until production.
- 🔍 Catch it before it ships. AI-powered inline comments show you exactly what changed and what looks wrong.
- 🔁 Build a habit, ship better code. Regular review → fewer bugs → more robust code → better results in your team.
- 🔗 Why git? Git is universal. Every editor, every IDE, every AI…
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