class JsonReference::Reference

def <=>(other) 

def <=>(other)
  to_s <=> other.to_s
end

def initialize(ref) 

def initialize(ref)
  # Note that the #to_s of `nil` is an empty string.
  @uri = nil
  # given a simple fragment without '#', resolve as a JSON Pointer only as
  # per spec
  if ref.include?("#")
    uri, @pointer = ref.split('#')
    if uri && !uri.empty?
      @uri = URI.parse(uri)
    end
    @pointer ||= ""
  else
    @pointer = ref
  end
  # normalize pointers by prepending "#" and stripping trailing "/"
  @pointer = "#" + @pointer
  @pointer = @pointer.chomp("/")
end

def inspect 

def inspect
  "\#<JsonReference::Reference #{to_s}>"
end

def resolve_pointer(data)

the reference.
Given the document addressed by #uri, resolves the JSON Pointer part of 
def resolve_pointer(data)
  JsonPointer.evaluate(data, @pointer)
end

def to_s 

def to_s
  if @uri
    "#{@uri.to_s}#{@pointer}"
  else
    @pointer
  end
end