v8 spidermonkey ruby johnson comparison ast between javascript e ruby

require 'rubygems'
require 'v8'
require 'johnson'
require 'ruby_parser'


sexp=Johnson::Parser.parse %{
  var sum=function sum (x,y) {
    return x+y
  };
  
  sum(1,1);  
}

V8::Context.open do |context|
   
   context["sexp"]=Johnson::Parser.parse %{
     var sum=function sum (x,y) {
       return x+y
     };

     sum(1,1);  
   }
   
   
   puts context.eval %{
     sexp
   }
end

#risultato sexp javascript
#[[:var, [[:assign, [:name, "sum"], [:func_expr, "sum", ["x", "y"], [[:return, [:op_add, [:name, "x"], [:name, "y"]]]]]]]], [:function_call, [[:name, "sum"], [:lit, 1], [:lit, 1]]]]

puts "-----------------------"


p RubyParser.new.parse %{
  
  def sum(x,y)
    x.length
    return x + y
  end
  
  sum(1,1)
  
}


#risultato sexp ruby
#s(:block, s(:defn, :sum, s(:args, :x, :y), s(:scope, s(:block, s(:call, s(:lvar, :x), :length, s(:arglist)), s(:return, s(:call, s(:lvar, :x), :+, s(:arglist, s(:lvar, :y))))))), s(:call, nil, :sum, s(:arglist, s(:lit, 1), s(:lit, 1))))

and the result:

3
[[:var, [[:assign, [:name, "sum"], [:func_expr, "sum", ["x", "y"], [[:return, [:op_add, [:name, "x"], [:name, "y"]]]]]]]], [:function_call, [[:name, "sum"], [:lit, 1], [:lit, 1]]]]
s(:block, s(:defn, :sum, s(:args, :x, :y), s(:scope, s(:block, s(:call, s(:lvar, :x), :length, s(:arglist)), s(:return, s(:call, s(:lvar, :x), :+, s(:arglist, s(:lvar, :y))))))), s(:call, nil, :sum, s(:arglist, s(:lit, 1), s(:lit, 1))))