# Racc¶ ↑

- i.loveruby.net/en/projects/racc/

- racc.rubyforge.org/

## DESCRIPTION:¶ ↑

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

    NOTE: Ruby 1.8.x comes with Racc runtime module.  You
    can run your parsers generated by racc 1.4.x out of the
    box.

## Requirement¶ ↑

     *  Ruby 1.8.x or later.
    (*) make and C compiler.

## Installation¶ ↑

    gem install:

      $ gem install racc

    setup.rb install:

    Type this in the top directory of the extracted archive:

      $ ruby setup.rb config
      $ ruby setup.rb setup
     ($ su)
      # ruby setup.rb install

    You can install Racc into your favorite directory by giving
    options to setup.rb. e.g.

      $ ruby setup.rb config --prefix=/usr

    For details, try "ruby setup.rb --help".

    If you don't have C Compiler
    ----------------------------

    You can install Racc without C compilers. Type following
    command in config phase.

      $ ruby setup.rb config --without-ext

## 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 works?
    For details of Racc, see HTML documents placed under 'doc.en/'
    and sample grammer files under 'sample/'.

## License¶ ↑

    Racc is distributed under the terms of the GNU Lesser General
    Public License version 2. Note that you do NOT need to follow
    LGPL for your own parser (racc outputs). You can provide those
    files under any licenses you want.

## Bug Reports¶ ↑

    Any kind of bug reports are welcome.
    If you find a bug of Racc, please email me. Your grammer file,
    debug output genereted by "racc -g", are helpful.

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