V8 for Ruby

Run the V8 Javascript Engine from Ruby. V8 is Google’s powerful JS engine that’s used by Google Chrome. Using this C++ Ruby extension, you can run JS from Ruby land.

Note: this project just started, there is a lot to be done. There is no way that this code is production ready yet.

Install

  # Download and build V8: http://code.google.com/apis/v8/build.html
  # Change to your ruby-v8 directory.
  # Need Ruby RICE to pimp up C++ compatibility:
  sudo gem install rice
  # Compile the V8 ruby module:
  ruby extconf.rb --with-v8-dir=$V8_BUILD_PATH

Example: Hello World

  require 'V8'

  js_code = <<-JAVASCRIPT

    var hello = 'hello';
    var world = 'world';
    hello + ' ' + world + '!';

  JAVASCRIPT

  proc = V8::Proc.new(js_code)
  result = proc.run
  puts result

TODO

• Proper exception handling
• Memory benchmarking, making sure things are garbage collected
• Ruby function and object callbacks