cowboyd

require 'v8'
require 'openssl'


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

cowboyd

package spike;

import org.jruby.embed.ScriptingContainer;

public class Spike {
	public static void main(String[] args) {
		ScriptingContainer container = new ScriptingContainer();
		Object someInstance = container.runScriptlet("Object.new");
		container.callMethod(someInstance, "instance_eval", "self", "<eval>", 1);
	}

cowboyd

legolas:~ cowboyd$ ri Object
Nothing known about Object
legolas:~ cowboyd$ rvm use system
info: Now using system ruby.
legolas:~ cowboyd$ ri Object
### a whole mess of stuff about object

cowboyd

package ruby;


import hudson.model.Descriptor;
import hudson.slaves.Cloud;

@SuppressWarnings({"UnusedDeclaration"})
public abstract class RubyCloudDescriptor extends Descriptor<Cloud> {
	protected RubyCloudDescriptor() {
		super(Cloud.class);

cowboyd

I'm giving WebEx because supposedly it's much more Linux friendly.

cowboyd

package spike;

import org.jruby.embed.ScriptingContainer;

public class Spike {


	public void inspectClass(Class cls) {
		System.out.println("java_class: " + cls);
	}

cowboyd

require 'v8'
require 'delegate'

cxt = V8::Context.new
a = SimpleDelegator.new([17,1])
cxt['a'] = a
cxt.eval('a.push(10)')
puts a.inspect //=> [17,1,10]

cowboyd

require 'v8'
require 'delegate'

cxt = V8::Context.new
cxt['puts'] = lambda {|msg| puts(msg)}
a = SimpleDelegator.new([17,1])
def a.each(fn)
  __getobj__.each do |item|
    fn.call(item)
  end

cowboyd

require 'v8'
require 'delegate'

cxt = V8::Context.new
cxt['puts'] = lambda {|msg| puts(msg)}
a = SimpleDelegator.new([17,1])
def a.each(fn)
  __getobj__.each do |item|
    fn.methodcall(item)
  end

cowboyd

require 'v8'

V8::Context.new do |cxt|
  a = cxt.eval('["fe", "fi", "fo", "fum"]')
  a.each do |item|
    puts item
  end
end