import strformat

type
  Revision = object
    value: uint32

proc new_revision(major: uint16, minor: uint16): Revision =
  let major = major.uint32;
  let minor = minor.uint32;
  let value = (major shl 16) or minor;

  return Revision(value: value);

method major(self: Revision): uint16 {.base.} =
  return (self.value shr 16).uint16;

method minor(self: Revision): uint16 {.base.} =
  return (self.value and 0xFFFF).uint16;

proc `$`(self: Revision): string =
  let major = self.major();
  let minor = self.minor();

  if major < 2:
    return fmt"{major}.{minor}";

# here