Method valid_transition

vmm/src/vm.rs:409–443

(self, new_state: VmState)

impl VmState {
    fn valid_transition(self, new_state: VmState) -> Result<()> {
        match self {
            VmState::Created => match new_state {
                VmState::Created => Err(Error::InvalidStateTransition(self, new_state)),
                VmState::Running | VmState::Paused | VmState::BreakPoint | VmState::Shutdown => {
                    Ok(())
                }
            },

            VmState::Running => match new_state {
                VmState::Created | VmState::Running => {
                    Err(Error::InvalidStateTransition(self, new_state))
                }
                VmState::Paused | VmState::Shutdown | VmState::BreakPoint => Ok(()),
            },

            VmState::Shutdown => match new_state {
                VmState::Paused | VmState::Created | VmState::Shutdown | VmState::BreakPoint => {
                    Err(Error::InvalidStateTransition(self, new_state))
                }
                VmState::Running => Ok(()),
            },

            VmState::Paused => match new_state {
                VmState::Created | VmState::Paused | VmState::BreakPoint => {
                    Err(Error::InvalidStateTransition(self, new_state))
                }
                VmState::Running | VmState::Shutdown => Ok(()),
            },
            VmState::BreakPoint => match new_state {
                VmState::Created | VmState::Running => Ok(()),
                _ => Err(Error::InvalidStateTransition(self, new_state)),
            },
        }
    }
}

struct VmOpsHandler {