From: Ben Giddings <bg-rubytalk@...>
Date: 2005-02-09T02:52:46+09:00
Subject: Object#to_ruby and Object#to_c

In case you missed it, on RedHanded, I spotted was an interesting 
snippet I didn't see on the list or anything:

It's a way of using ParseTree and RubyToC to add 'to_c' and 'to_ruby' 
methods to any Method.

http://redhanded.hobix.com/cult/tooInterestingToPassUp.html

(it also kinda shows how difficult it would be to truly obfuscate Ruby 
source)

A teaser:

class Example
   def example(arg1)
     return "Blah: " + arg1.to_s
   end
end


quoting zenspider:

Source:

e = Example.new
puts "sexp:"
p e.method(:example).to_sexp
puts "C:"
puts e.method(:example).to_c
puts "Ruby:"
puts e.method(:example).to_ruby

Output:

sexp:
[:defn, :example, [:scope, [:block, [:args, :arg1], [:return, [:call, 
[:str, "Blah: "], :+, [:array, [:call, [:lvar, :arg1], :to_s]]]]]]]
C:
str
example(long arg1) {
return strcat("Blah: ", to_s(arg1));
}
Ruby:
def example(arg1)
return "Blah: " + arg1.to_s
end




Ben