Proof of concept for making all ruby available to javascript.

allruby.rb

require 'v8'
require 'openssl'


class Module
  def [](name)
    self.const_get(name)
  end
end

class RubyTopLevel
  def [](constant)
    Object.const_get(constant)
  end
end

V8::Context.new do |cxt|
  cxt['Ruby'] = RubyTopLevel.new
  cxt.eval('var cipher = new Ruby.OpenSSL.Cipher("aes-128-cbc")')
  cxt.eval('cipher.decrypt')
  puts cxt['cipher'] #=> #<OpenSSL::Cipher:0x1015c7f40>
end

@caius: in this case it will work because it will be invoked only with top level constants, hence RubyTopLevel.

Hmm, true. Hadn't looked at the original code for the use of eval("::#{constant}"), was just pointing out the two aren't the same.

General solution to this problem:

"Foo::Bar".split("::").inject(Object) { |m, e| m.const_get(e) }