Ragel::Array

Ragel generates ruby code with very large arrays of integers that allocate a lot of memory when required. To reduce memory consumption, this gem replaces those arrays with strings that transform into native uint32_t arrays.

Add this line to your application's Gemfile:

gem 'ragel-array'

And then execute:

$ bundle

Or install it yourself as:

$ gem install ragel-array

After you've run ragel to generate your parser, you should then run this gem over the resulting source file and it will replace the integer arrays inline. For example, the following code adds a rake rule to generate the ragel parser from the grammar file and then run Ragel::Array over it:

rule %r|_parser\.rb\z| => '%X.rl' do |t|
  sh "ragel -s -R -L -F1 -o #{t.name} #{t.source}"
  require 'ragel/array'
  Ragel::Array.replace(t.name)
end

Then, in your application, add require 'ragel/array' before you require your parser. Now you should be off and running!

We also provide a ragel-array command that you can execute once this gem is installed. Usage looks like ragel-array [path] where path is a path to a generated ragel parser.

After checking out the repo, run bin/setup to install dependencies. Then, run rake test to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/kddnewton/ragel-array.

The gem is available as open source under the terms of the MIT License.