nyu is a powerful and flexible parser generator based on the TBPEG (tree building parsing expression grammar) notation. nyu outputs both an appropriate AST type (based on vectors, variants, custom classes, strings and primitive types) in addition to a parser which populates this AST as it parses text. The nyu language is based on parsing expression grammars (PEGs) with simple and powerful extensions to allow the tree representation to be inferred from the same grammar that is used to create the parser.
At one point, Open Hub analyzed source code for this project based on code location(s) available at that time. Since then, the code locations have been removed.