errors: create superclass for Abort exception
I'd like to let extensions subclass `StorageError` to define a custom
exit code. However, `StorageError` does not extend `Abort` (which is
where the exit code currently lives), and it seems that it's not
supposed to either (`StorageError` seems to be for lower-level errors
and `Abort` is for command-level errors). This patch therefore
extracts all the code from `Abort` into a new `Error` class, which
I'll soon make `StorageError` also extend.
Differential Revision: https://phab.mercurial-scm.org/D10738
--- a/mercurial/error.py Tue May 18 22:07:16 2021 -0700
+++ b/mercurial/error.py Tue May 18 21:32:12 2021 -0700
@@ -51,8 +51,8 @@
super(Hint, self).__init__(*args, **kw)
-class Abort(Hint, Exception):
- """Raised if a command needs to print an error and exit."""
+class Error(Hint, Exception):
+ """Base class for Mercurial errors."""
def __init__(
self, message, hint=None, coarse_exit_code=None, detailed_exit_code=None
@@ -87,6 +87,10 @@
return message
+class Abort(Error):
+ """Raised if a command needs to print an error and exit."""
+
+
class StorageError(Hint, Exception):
"""Raised when an error occurs in a storage layer.