devel/parol 1.0.1_4 DragonFly

parol is a LL(k) parser generator for Rust.

It's an installable command line tool that can generate complete parsers from a single grammar description file including all AST data types you would otherwise had to design by yourself. `parol` does this solely by analyzing your language's grammar.

You can control the process of AST type generation. First you can mark elements for omission in your AST. Also you can specify your own types for language elements.

Language description and language implementation is strictly separated in `parol`. Thus you can design your language's grammar without any need to process anything because generated parsers function by default as acceptors. This empowers you to do a real rapid prototyping of your grammar.