Enum CycleOutcome 

pub enum CycleOutcome {
    Advanced(SelectionState),
    RefusedEmptyGlob,
    RefusedSubtreeLock,
    NeedsChildrenLoaded,
}

Outcome of an attempted Tree::cycle_focused call.

AUX-004 defines two refusal cases; cycling outside those constraints succeeds and returns the new state.

Variants

Advanced(SelectionState)

The cycle succeeded; the focused node’s new state is the carried value.

RefusedEmptyGlob

AUX-004 rule 1: the focused node has no subdirectories, so cycling into SelectionState::ProjectsParent is refused. The previous state is preserved.

RefusedSubtreeLock

AUX-004 rule 2: the focused node lies under an ancestor in SelectionState::ProjectsParent, so cycling is refused while the lock holds. The focused node’s state is left unchanged; under the rule 2 invariant the locked descendant is always SelectionState::None.

NeedsChildrenLoaded

The focused node’s children have not been loaded yet, so the rule 1 check cannot be evaluated. The driver MUST load children and re-issue the cycle. The previous state is preserved.

Trait Implementations

impl Clone for CycleOutcome

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for CycleOutcome

impl Debug for CycleOutcome

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for CycleOutcome

impl PartialEq for CycleOutcome

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for CycleOutcome