Method create

python/ee/customfunction.py:99–127

Creates a CustomFunction. The result calls a given native function with the specified return type and argument types and auto-generated argument names. Args: func: The native function to wrap. return_type: The type of the return value, either as a string or a clas

(
      func: Callable[[Any], Any], return_type: Any, arg_types: Any
  )

  @staticmethod
  def create(
      func: Callable[[Any], Any], return_type: Any, arg_types: Any
  ) -> CustomFunction:
    """Creates a CustomFunction.

    The result calls a given native function with the specified return type and
    argument types and auto-generated argument names.

    Args:
      func: The native function to wrap.
      return_type: The type of the return value, either as a string or a
          class reference.
      arg_types: The types of the arguments, either as strings or class
          references.

    Returns:
      The constructed CustomFunction.
    """

    def StringifyType(t: Any) -> str:
      return t if isinstance(t, str) else ee_types.classToName(t)

    args = [{'name': None, 'type': StringifyType(i)} for i in arg_types]
    signature = {
        'name': '',
        'returns': StringifyType(return_type),
        'args': args
    }
    return CustomFunction(signature, func)

  @staticmethod
  def _resolveNamelessArgs(signature: Any, variables: Any, body: Any) -> Any: