Struct CoherenceId 

pub struct CoherenceId {
    pub constraints_hash: u64,
    pub direction: Direction,
}

Identity for a layout computation, used as key in the coherence cache.

This is a subset of LayoutCacheKey that identifies a layout slot independently of the available area. Two computations with the same CoherenceId but different area sizes represent the same logical layout being re-rendered at a different terminal size.

Fields

constraints_hash: u64

Hash fingerprint of constraints.

direction: Direction

Layout direction.

Implementations

impl CoherenceId

pub fn new(constraints: &[Constraint], direction: Direction) -> Self

Create a coherence ID from layout parameters.

pub fn from_cache_key(key: &LayoutCacheKey) -> Self

Create a coherence ID from an existing cache key.

Trait Implementations

impl Clone for CoherenceId

fn clone(&self) -> CoherenceId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CoherenceId

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

Formats the value using the given formatter.

impl Hash for CoherenceId

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 CoherenceId

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for CoherenceId

impl Eq for CoherenceId

impl StructuralPartialEq for CoherenceId