Lexically

Using the refinements mechanism, This gem allows you to mark methods with the visibility like private, but it's more like Java's or PHP's private. i.e. lexically defines methods cannot be called from derived class.

Installation

Add this line to your application's Gemfile:

gem 'lexically'

And then execute:

$ bundle

Or install it yourself as:

$ gem install lexically

Usage

Include the Lexically module into your class, and define methods under lexically block with using.

class C
  include Lexically

  using lexically {
    def lexical_method
      :foo
    end
  }

  def public_api
    lexical_method
  end
end

class D < C
  def derived
    lexical_method
  end
end

C.new.public_api     #=> :foo
C.new.lexical_method #=> raises NameError
D.new.lexical_method #=> raises NameError because the D is derived class

Development

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.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/nonowarn/lexically.