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

License: GNU Lesser General Public License v2.1

Ruby 46.64% Java 0.78% C 0.52% Ragel in Ruby Host 0.13% HTML 33.09% Yacc 18.84%

racc's Introduction

Racc¶ ↑

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

DESCRIPTION:¶ ↑

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

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

Requirements¶ ↑

 *  Ruby 1.8+
(*) make and C compiler.

Installation¶ ↑

gem install:

  $ gem install racc

Testing Racc¶ ↑

Racc comes with a simple calculator. To compile this at the shell:

    $ racc -o calc sample/calc.y

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

    $ ruby calc

... Does it work?

For details about Racc, see the HTML documents under 'doc.en/'
and sample grammar 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 distribute those
files under any licenses you want.

Bug Reports¶ ↑

Any kind of bug reports are welcome.
If you find a bug in Racc, please email me. Your grammar file,
and debug output generated by "racc -g", will be helpful.

                                                    Minero Aoki
                                            [email protected]
                                          http://i.loveruby.net

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