class Protobuf::Field::EnumField

def acceptable?(val)
  case val
  when Symbol then
    raise TypeError unless @type.const_defined?(val)
  when EnumValue then
    raise TypeError if val.parent_class != @type
  else
    raise TypeError unless @type.valid_tag?(val)
  end
  true
end

def define_setter
  field = self
  @message_class.class_eval do
    define_method("#{field.name}=") do |val|
      if val.nil?
        @values.delete(field.name)
      else
        val = \
          case val
          when Symbol then
            field.type.const_get(val) rescue nil
          when Integer then
            field.type.const_get(field.type.name_by_value(val)) rescue nil
          when EnumValue then
            raise TypeError, "Invalid value: #{val.inspect}" if val.parent_class != field.type
            val
          end
        raise TypeError, "Invalid value: #{val.inspect}" unless val
        @values[field.name] = val
      end
    end
  end
end

def encode(value)
  super(value.to_i)
end

def typed_default_value
  if @default.is_a?(Symbol)
    @type.const_get(@default)
  else
    self.class.default
  end
end