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.
* Ruby 1.8.x or later. (*) make and C compiler.
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
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 grammar files under 'sample/'.
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.
Any kind of bug reports are welcome.
If you find a bug of Racc, please email me. Your grammar file,
debug output genereted by "racc -g", are helpful.
Minero Aoki
[email protected]
http://i.loveruby.net