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# SPDX-FileCopyrightText: Peter Pentchev <roam@ringlet.net>
# SPDX-License-Identifier: BSD-2-Clause
"""Common definitions for the perl-weekly-285 library."""
from __future__ import annotations
import dataclasses
import typing
if typing.TYPE_CHECKING:
from typing import Final
VERSION: Final = "0.1.0"
"""The perl-weekly-285 library version, semver-like."""
@dataclasses.dataclass
class Error(Exception):
"""An error that occurred during the processing."""
def __str__(self) -> str:
"""Provide a human-readable error message."""
return f"{type(self).__str__} must be overridden for {self!r}"
@dataclasses.dataclass
class NoSolutionError(Error):
"""No solution could be found."""
def __str__(self) -> str:
"""Provide a human-readable error message."""
return f"Could not find a solution: {self!r}"
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