Rascal - Grammar language

Rascal is an open source grammar language created in 2013.

Source code:

git clone https://github.com/usethesource/rascal

#645on PLDB

11Years Old

722Repos

Rascal is an experimental domain specific language for metaprogramming, such as static code analysis, program transformation and implementation of domain specific languages. It is a general meta language in the sense that it does not have a bias for any particular software language. It includes primitives from relational calculus and term rewriting. Read more on Wikipedia...

Rascal website
Rascal Wikipedia page
Rascal is developed on GitHub and has 317 stars
There are at least 722 Rascal repos on GitHub
Rascal first developed in https://github.com/usethesource
file extensions for Rascal include rsc
The Google BigQuery Public Dataset GitHub snapshot shows 99 users using Rascal in 107 repos on GitHub
Explore Rascal snippets on Rosetta Code
GitHub supports syntax highlighting for Rascal
rascal-mpl.org was registered in 2010
See also: (3 related languages)Linux, Unix, ANTLR

Example from Linguist:

module Syntax

extend lang::std::Layout;
extend lang::std::Id;

start syntax Machine = machine: State+ states;
syntax State = @Foldable state: "state" Id name Trans* out;
syntax Trans = trans: Id event ":" Id to;