helpers

func ErrFromCtxs ¶

func ErrFromCtxs(ctxs ...context.Context) error

ErrFromCtxs returns the first non-nil error from a list of contexts.

func IndexesToStates ¶

func IndexesToStates(mach *am.Machine, indexes []int) am.S

IndexesToStates converts a list of state indexes to a list of state names, for a given machine.

func NestedState ¶

func NestedState(
	e *am.Event, strIDField string, machGetter func(id string) *am.Machine,
) (am.Result, <-chan struct{}, error)

NestedState forwards the mutation to one of the composed submachines. Parent state should be a Multi state and only called directly (not from a relation). TODO test case, solve locking by passing the event to the submachine

func RaceCtx ¶

func RaceCtx[T *any](ctx context.Context, ch chan T) (T, error)

func StatesToIndexes ¶

func StatesToIndexes(mach *am.Machine, states am.S) []int

StatesToIndexes converts a list of state names to a list of state indexes, for a given machine.

func TimeMatrix ¶

func TimeMatrix(machines []*am.Machine) ([]am.T, error)

TimeMatrix returns a matrix of state clocks for the given machines.