comparison mercurial/error.py @ 45827:8d72e29ad1e0

errors: introduce InputError and use it from commands and cmdutil

This patch introduces a `InputError` class and replaces many uses of
`error.Abort` by it in `commands` and `cmdutil`. This is a part of
https://www.mercurial-scm.org/wiki/ErrorCategoriesPlan. There will
later be a different class for state errors (to raise e.g. when
there's an unfinished operation). It's not always clear when one
should report an input error and when it should be a state error. We
can always adjust later if I got something wrong in this patch (but
feel free to point out any you notice now).

Differential Revision: https://phab.mercurial-scm.org/D9167

45826:21733e8c924f

        def __str__(self):
            # the output would be unreadable if the message was translated,
            # but do not replace it with encoding.strfromlocal(), which
            # may raise another exception.
            return pycompat.sysstr(self.__bytes__())


class HookLoadError(Abort):
    """raised when loading a hook fails, aborting an operation

45827:8d72e29ad1e0

        def __str__(self):
            # the output would be unreadable if the message was translated,
            # but do not replace it with encoding.strfromlocal(), which
            # may raise another exception.
            return pycompat.sysstr(self.__bytes__())


class InputError(Abort):
    """Indicates that the user made an error in their input.

    Examples: Invalid command, invalid flags, invalid revision.
    """


class HookLoadError(Abort):
    """raised when loading a hook fails, aborting an operation