Enum MiddleMark 

pub enum MiddleMark {
    Unknown,
    Left,
    Right,
    Both,
    Empty,
}

LPCMCI middle mark on an edge (Gerhardus & Runge 2020).

Intermediate search state; a converged PAG has only MiddleMark::Empty.

Variants

Unknown

Unknown (?) — no adjacency claim yet.

Left

Left (L) — search among parents of the later/ordered endpoint exhausted.

Right

Right (R) — search among parents of the earlier/ordered endpoint exhausted.

Both

Both (!) — Left and Right both hold.

Empty

Empty (-) — definite adjacency in the MAG / final PAG.

Implementations

impl MiddleMark

pub const fn is_definite(self) -> bool

Whether this is a definite adjacency mark (empty middle).

pub const fn apply(self, update: Self) -> Self

Merge an existing middle mark with an update (LPCMCI middle-mark update rule).

Trait Implementations

impl Clone for MiddleMark

fn clone(&self) -> MiddleMark

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for MiddleMark

impl Debug for MiddleMark

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

Formats the value using the given formatter.

impl Default for MiddleMark

fn default() -> MiddleMark

Returns the “default value” for a type.

impl Eq for MiddleMark

impl Hash for MiddleMark

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for MiddleMark

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for MiddleMark