ast-grep Blog
How ast-grep Rewrote Tree-sitter in Rust and Made It 30% Faster
The complete adventure of using AI to rewrite Tree-sitter's C core in Rust, simplify it, optimize it, and discover that a faster parser could still make ast-grep slower.Rewriting Tree-sitter's C Core in Rust: Migration and Compatibility
How an AI-assisted migration moved Tree-sitter's runtime from C to Rust while preserving its retained ABI, generated grammars, and external scanners.Improving Tree-sitter's GLR Algorithm and Memory Layout
How profiling Tree-sitter's GLR stack led to lazy graph materialization, compact arena-backed syntax nodes, and a long series of failed performance experiments.Optimizing Tree-sitter for End-to-End ast-grep Performance
Why a parser-only speedup made ast-grep slower, and how profiling virtual memory, arena growth, tree traversal, and the full application repaired it.Introducing ast-grep Outline
ast-grep Outline gives humans and coding agents a fast, syntax-aware table of contents for source code without building an index.ast-grep 0.43 - Search Code and Markdown with Structure
ast-grep 0.43 adds Markdown support and brings ESQuery-style selectors to the run command for fast structural queries from the CLI.ast-grep 0.42 - The Answer to Code Searching
ast-grep 0.42: parameterized utilities, ESQuery-style selectors, and improved LSP diagnostics for injected languages.Announcing the Book: Mastering ast-grep
Mastering ast-grep, a comprehensive guide designed to bridge the gap between basic tool reference and advanced structural search mastery.How to Debug ast-grep Rule Effectively
Learn how to debug ast-grep rules effectively by simplifying code and rules step by step.ast-grep new release 0.39
ast-grep 0.39 includes new languages support, better file config and Esquery style kind.YAML vs DSL: comparison is subjective
YAML and DSL are two different approaches to configure rule in structural search. The question "which is better" is largely subjective.ast-grep's Journey to AI Generated Rules
Advancements in AI have made it possible to generate ast-grep rules with a well-written prompt.Interactive Code Fixes with Multiple Options!
Today, we're thrilled to showcase a game-changing feature, multi-option interactive code fixes!ast-grep new release 0.38
ast-grep 0.38 brings some fantastic new features to improve your code searching and linting experience, alongside a significant internal shift.ast-grep gets more LLM support!
ast-grep is getting even better with enhanced Large Language Model (LLM) support. This exciting development opens up new possibilities for developers to analyze, understand, and transform code more efficiently. Let's dive into the details of these new features.ast-grep Rockets to 8000 Stars!
ast-grep has recently reached 6000 stars on GitHub! This is a remarkable achievement for the project and I am deeply grateful for all the support and feedback that I have received from the open source community.An Example of Rust's Fearless Concurrency
ast-grep shows how Rust's fearless concurrency works in practice. Learn how to design concurrent systems in Rust and the trade-offs involved.Design Space for Code Search Query
A review of the design space for code search tools.ast-grep's Journey to Type Safety in Node API
ast-grep/napi now supports typed AST manipulation which is correct, concise, robust, and performant.ast-grep got 6000 stars!
ast-grep has recently reached 6000 stars on GitHub! This is a remarkable achievement for the project and I am deeply grateful for all the support and feedback that I have received from the open source community.ast-grep: 5000 stars and beyond!
ast-grep has recently reached 5000 stars on GitHub! This is a remarkable achievement for the project and I am deeply grateful for all the support and feedback that I have received from the open source community.ast-grep got 3000 stars!
ast-grep has recently reached 3000 stars on GitHub! This is a remarkable achievement for the project and I am deeply grateful for all the support and feedback that I have received from the open source community.Migrating Bevy can be easier with (semi-)automation
In this article, we will show you how to make migration easier by using some command line tools.Optimize ast-grep to get 10X faster
How to optimize the Rust CLI tool ast-grep to become 10 times faster.