ANTLR

A developer released Plurnk, a homebrewed AI agent harness, on Hacker News' Show HN, claiming it runs as a daily driver on an RTX 5070Ti with 16GB VRAM and a 200MB footprint. Plurnk features determini…

PostHog engineer Robbie Coomber rebuilt the company's SQL parser using AI agents, replacing an ANTLR-generated parser with a hand-rolled recursive-descent parser that runs 70 times faster. The project…

PostHog engineer rewrote the company's SQL parser using AI agents, achieving a 70x speedup with 16K lines of hand-rolled parser code. The new parser replaces an ANTLR-generated parser and is equivalen…