Story
How AST-grep Rewrote Tree-sitter in Rust and Made It 30% Faster
1 report
1 website
1 discussion
Latest report
Overview
ast-grep rewrote Tree-sitter's C core in Rust, resulting in a 30% increase in parser speed and a 22% improvement in overall performance for ast-grep. The new core enhances parsing efficiency and accelerates tree reading.
Summary from astgrep.com.
Reports
One report so far. Additional coverage will appear here when it is linked to this story.
Community reactions
Each reaction summarizes sampled comments from the linked discussion.
Hacker News · astgrep.com
Hacker News discussion ↗
Historical count: 5 · 5 saved in sample · Historical sample
Analysis ready
Read this discussion’s reaction
Based on 5 sampled comments from this thread. Analyzed 2026-07-27.
- Praise: Implementing incremental parsing improved performance from 5ms to 400us for small edits, showcasing tree-sitter's potential in real-world applications.
- Praise: The ability to easily distribute grammars through package managers is a game-changer for expanding ast-grep's capabilities.
- Concern: The removal of incremental old-tree reuse raises concerns that performance gains are achieved at the expense of practical usability in common scenarios.
- Concern: Many commenters find the AI-generated nature of the article disappointing, questioning the authenticity and value of the content.