"""Exception classes for Lisp interpreter."""


class error(Exception):
    """Base exception for all Lisp-related errors."""

    pass


class syntaxError(error):
    """Raised when there is a syntax error in the Lisp code."""

    pass


class runtimeError(error):
    """Raised when there is a runtime error during evaluation."""

    pass


class valueError(error):
    """Raised when there is an invalid value."""

    pass


class typeError(error):
    """Raised when there is a type error during evaluation."""

    pass