Trait concordium_std::StateClone

pub unsafe trait StateClone<S> {
    // Required method
    unsafe fn clone_state(&self, cloned_state_api: &S) -> Self;
}

Types that can be cloned along with the state.

Used for rolling back the test state when errors occur in a receive function. See TestHost::with_rollback and TestHost::invoke_contract_raw.

Safety

Marked unsafe because special care should be taken when implementing this trait. In particular, one should only use the supplied cloned_state_api, or (shallow) clones thereof. Creating a new HasStateApi or using a deep_clone will lead to an inconsistent state and undefined behaviour.

Required Methods

unsafe fn clone_state(&self, cloned_state_api: &S) -> Self

Make a clone of the type while using the cloned_state_api.

Safety

Marked unsafe because this function should not be called directly. It is only used within generated code and in the test infrastructure.

Implementors

impl<T, S: HasStateApi> StateClone<S> for StateSet<T, S>

impl<T, V, S: HasStateApi> StateClone<S> for StateMap<T, V, S>

impl<T: Clone, S> StateClone<S> for T

Blanket implementation for all cloneable, flat types that don’t have references to items in the state.

impl<T: DeserialWithState<S> + Serial, S: HasStateApi> StateClone<S> for StateBox<T, S>