Superclasses and classes

superclasses.rb

# Starting with a simple String object:
hello = "Hello, World"

def output_class_hierarchy(object)
  o = object
  while o.class!=Class || (o != nil && o != NilClass)
    if o.is_a? Class
      puts "  #{o} -> #{o.superclass.inspect} [label=superclass,color=red];"
      o = o.superclass
    else
      puts "  #{o.inspect} -> #{o.class} [label=class];"
      o = o.class
    end
  end
end

def dot_file_header
  puts "digraph {"
end

def dot_file_footer
  puts "}"
end

dot_file_header

output_class_hierarchy(hello)

dot_file_footer