class MultiJson::Adapters::OkJson

def self.dump(object, options={}) #:nodoc:
  ::MultiJson::OkJson.valenc(stringify_keys(object))
end

def self.load(string, options={}) #:nodoc:
  string = string.read if string.respond_to?(:read)
  result = ::MultiJson::OkJson.decode(string)
  options[:symbolize_keys] ? symbolize_keys(result) : result
end

def self.modify_keys(object, &modifier) #:nodoc:
  case object
  when Array
    object.map do |value|
      modify_keys(value, &modifier)
    end
  when Hash
    object.inject({}) do |result, (key, value)|
      new_key   = modifier.call(key)
      new_value = modify_keys(value, &modifier)
      result.merge! new_key => new_value
    end
  else
    object
  end
end

def self.stringify_keys(object) #:nodoc:
  modify_keys(object) do |key|
    key.is_a?(Symbol) ? key.to_s : key
  end
end

def self.symbolize_keys(object) #:nodoc:
  modify_keys(object) do |key|
    key.is_a?(String) ? key.to_sym : key
  end
end