whtoo/How_to_implment_PL_in_Antlr4

A concise tutorial on building a programming language, also serving as an unofficial ANTLR reference 🌰. This is also where the cyson language originated.

Latest release v0.0.3 · 19 Dec 2025

11 files for Claude Code, Codex and OpenCode: ga, gc, gs, antlr4-dev and 7 more — 4,269 tokens loaded in every session.

Open on GitHub whtoo.github.io

Instructions

How_to_implment_PL_in_Antlr4 AGENTS.md AGENTS.md A 4,269 tok

Skills

antlr4-dev .claude/skills/antlr4-dev/SKILL.md A 29 tok
compiler-dev .claude/skills/compiler-dev/SKILL.md A 27 tok
ep-navigator .claude/skills/ep-navigator/SKILL.md A 27 tok
git-committer .claude/skills/git-committer/SKILL.md A 18 tok
tech-blogger .claude/skills/tech-blogger/SKILL.md A 50 tok
test-dev .claude/skills/test-dev/SKILL.md A 22 tok
vm-dev .claude/skills/vm-dev/SKILL.md A 32 tok

Commands

ga .claude/commands/ga.md A 15 tok
gc .claude/commands/gc.md A 20 tok
gs .claude/commands/gs.md A 13 tok

These files are whtoo/How_to_implment_PL_in_Antlr4's own configuration — they tell Claude Code, Codex and OpenCode how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.