List of Languages with Built-in Support

The table below lists all languages that are supported by ast-grep.

Alias is the name you can use as an argument in sg run --lang [alias] or as a value in YAML rule with language: [alias].

Extension specifies the file extensions that ast-grep will look for when scanning the file system. By default, ast-grep uses the file extensions to determine the language.

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Language Name	Alias	File Extension
Bash	bash	bash, bats, cgi, command, env, fcgi, ksh, sh, sh.in, tmux, tool, zsh
C	c	c,h
Cpp	cc, c++, cpp, cxx	cc, hpp, cpp, c++, hh, cxx, cu, ino
CSharp	cs, csharp	cs
Css	css	css
Elixir	ex, elixir	ex, exs
Go	go, golang	go
Haskell	hs, haskell	hs
Html	html	html, htm, xhtml
Java	java	java
JavaScript	javascript, js, jsx	cjs, js, mjs, jsx
Json	json	json
Kotlin	kotlin, kt	kt, ktm, kts
Lua	lua	lua
Php	php	php
Python	py, python	py, py3, pyi, bzl
Ruby	rb, ruby	rb, rbw, gemspec
Rust	rs, rust	rs
Scala	scala	scala, sc, sbt
Swift	swift	swift
TypeScript	ts, typescript	ts, cts, mts
Tsx	tsx	tsx
Yaml	yml	yml, yaml

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Pro Tips

You can use languageGlobs to customize languages' extension mapping.