# Racc

- https://github.com/ruby/racc

## DESCRIPTION:

    Racc is an LALR(1) parser generator.
    It is written in Ruby itself, and generates Ruby program.

## Requirement

- Ruby 2.5 or later.

## Installation

    gem install:

      $ gem install racc

## Testing Racc

    Racc comes with simple calculator. To compile this, on shell:

        $ racc -o calc calc.y

    This process costs few seconds (or less). Then type:

        $ ruby calc

    ... Does it work?
    For details of Racc, see HTML documents placed under 'doc/en/'
    and sample grammar files under 'sample/'.

## Release flow

- Update VERSION number of these files
  - <code>RACC_VERSION</code> in "ext/racc/com/headius/racc/Cparse.java"
  - <code>VERSION</code> in "lib/racc/info.rb"
- Release as a gem by <code>rake release</code> with CRuby and JRuby because Racc gem provides 2 packages
- Create new release on {GitHub}[https://github.com/ruby/racc/releases]

## License

    Racc is distributed under the same terms of ruby.
    (see the file COPYING). Note that you do NOT need to follow
    ruby license for your own parser (racc outputs).
    You can distribute those files under any licenses you want.

## Bug Reports

    Any kind of bug report is welcome.
    If you find a bug of Racc, please report an issue at
    https://github.com/ruby/racc/issues. Your grammar file,
    debug output generated by "racc -g", are helpful.

                                                        Minero Aoki
                                                aamine@loveruby.net
                                              http://i.loveruby.net