feat: check formater class

src/genpac/core.py

@@ -60,6 +60,8 @@ def __init__(self, config_file=None, argv_enabled=True):
  @classmethod
  def add_formater(cls, name, fmt_cls, **options):
  fmt_cls._name = name.lower()
+ if fmt_cls._name in cls._formaters:
+ raise RuntimeError(f'输出格式{fmt_cls._name}重复')
  fmt_cls._desc = options.pop('desc', None)
  cls._formaters[name] = {'cls': fmt_cls,
  'options': options}

src/genpac/format/base.py

@@ -6,6 +6,8 @@
 # decorator: 添加格式化器
 def formater(name, **options):
  def decorator(fmt_cls):
+ if not issubclass(fmt_cls, FmtBase):
+ raise RuntimeError(f'格式类错误，必须继承自FmtBase: {fmt_cls}')
  GenPAC.add_formater(name, fmt_cls, **options)
  return fmt_cls
  return decorator