class CattrProxy

# File lib/lib/proxy.rb, line 2
def initialize host
  @host = host
end

# File lib/lib/proxy.rb, line 6
def method_missing key, value=nil, &block
  name = '@cattr_%s' % key

  if name.sub!(/=$/, '')
    @host.instance_variable_set name, value
  else
    if block_given?
      @host.instance_variable_set name, block
    else
      unless value.nil?
        raise ArgumentError, 'Plese use setter cattr.%s= to set argument' % key.to_s.sub('=', '')
      end

      for el in @host.ancestors
        if el.respond_to?(:superclass) && el != Object && el.instance_variable_defined?(name)
          value = el.instance_variable_get name
          value = value.call if value === Proc
          return value
        end
      end

      raise ArgumentError, 'Cattr class variable "cattr.%s" not defined on "%s".' % [name.sub('@cattr_', ''), @host]
    end
  end
end