Source code for freeride.exceptions

"""Define FreeRide-specific exception classes."""

from typing import Optional




class FreeRideError(Exception):
    """Base class for all FreeRide exceptions."""



    def __init__(self, message: Optional[str] = None) -> None:
        if message is None:
            message = "An unspecified FreeRide error occurred."
        super().__init__(message)
        self.message = message


    def __str__(self) -> str:  # pragma: no cover - simple return
        return self.message

    def __repr__(self) -> str:  # pragma: no cover - simple return
        return f"{self.__class__.__name__}('{self.message}')"





class FormulaParseError(FreeRideError):
    """Error raised when parsing a formula string fails."""





class PPFError(FreeRideError):
    """Error raised for invalid production possibility frontiers."""