class VaultError(Exception):
    pass


class DuplicateNameError(ValueError, VaultError):
    def __init__(self, cls, name):
        self.msg = f"Duplicate name {name!r} in class {cls.__name__!r}"
        super().__init__(self.msg)
        self.cls = cls
        self.name = name


class InvalidCipherStringError(VaultError, ValueError): pass


class Base64DecodeError(VaultError, ValueError):
    def __init__(self, name, value):
        self.msg = f"Cannot decode {value!r} for {name!r}"
        super().__init__(self.msg)
        self.name = name
        self.value = value


class EncryptionTypeNotImplementedError(VaultError, ValueError): pass