lib.rs

		}
	}
}

/// Checks that the XCM is decodable with `MAX_XCM_DECODE_DEPTH`.
///
/// Note that this uses the limit of the sender - not the receiver. It it best effort.
pub(crate) fn validate_xcm_nesting(xcm: &VersionedXcm<()>) -> Result<(), ()> {
	xcm.using_encoded(|mut enc| {
		VersionedXcm::<()>::decode_all_with_depth_limit(MAX_XCM_DECODE_DEPTH, &mut enc).map(|_| ())
	})
	.map_err(|_| ())
}

impl<T: Config> FeeTracker for Pallet<T> {
	type Id = ParaId;

	fn get_fee_factor(id: Self::Id) -> FixedU128 {
		<DeliveryFeeFactor<T>>::get(id)
	}

	fn increase_fee_factor(id: Self::Id, message_size_factor: FixedU128) -> FixedU128 {
		<DeliveryFeeFactor<T>>::mutate(id, |f| {
			*f = f.saturating_mul(
				delivery_fee_constants::EXPONENTIAL_FEE_BASE.saturating_add(message_size_factor),
			);
			*f
		})
	}

	fn decrease_fee_factor(id: Self::Id) -> FixedU128 {
		<DeliveryFeeFactor<T>>::mutate(id, |f| {
			*f = InitialFactor::get().max(*f / delivery_fee_constants::EXPONENTIAL_FEE_BASE);
			*f
		})
	}
}