xref: /aosp_15_r20/external/fonttools/Lib/fontTools/ufoLib/errors.py (revision e1fe3e4ad2793916b15cccdc4a7da52a7e1dd0e9) 
1from __future__ import annotations
2
3
4class UFOLibError(Exception):
5    pass
6
7
8class UnsupportedUFOFormat(UFOLibError):
9    pass
10
11
12class GlifLibError(UFOLibError):
13    def _add_note(self, note: str) -> None:
14        # Loose backport of PEP 678 until we only support Python 3.11+, used for
15        # adding additional context to errors.
16        # TODO: Replace with https://docs.python.org/3.11/library/exceptions.html#BaseException.add_note
17        (message, *rest) = self.args
18        self.args = ((message + "\n" + note), *rest)
19
20
21class UnsupportedGLIFFormat(GlifLibError):
22    pass
23