class Protobuf::Field::BytesField

def self.default
  ''
end

def acceptable?(val)
  if val.nil? || val.is_a?(::Protobuf::Message) || val.instance_of?(String)
    return true
  else
    raise TypeError, "Cannot set field : #{name} to value : #{val}"
  end
end

def decode(bytes)
  bytes.force_encoding(::Protobuf::Field::BytesField::BYTES_ENCODING)
  bytes
end

def define_setter
  field = self
  @message_class.class_eval do
    define_method(field.setter_method_name) do |val|
      begin
        field.warn_if_deprecated
        if val.nil?
          @values.delete(field.name)
        elsif field.acceptable?(val)
          @values[field.name] = val.dup
        else
          raise TypeError, "Unacceptable value #{val} for field #{field.name} of type #{field.type}"
        end
      rescue NoMethodError => ex
        ::Protobuf::Logger.error { ex.message }
        ::Protobuf::Logger.error { ex.backtrace.join("\n") }
        raise TypeError, "Got NoMethodError attempting to set #{val} for field #{field.name} of type #{field.type}: #{ex.message}"
      end
    end
  end
end

def encode(value)
  value = value.serialize_to_string if value.is_a?(::Protobuf::Message)
  value.force_encoding(::Protobuf::Field::BytesField::BYTES_ENCODING)
  string_size = ::Protobuf::Field::VarintField.encode(value.size)
  string_size << value
end

def wire_type
  ::Protobuf::WireType::LENGTH_DELIMITED
end