Struct FeatureList 

pub struct FeatureList<'a> { /* private fields */ }

Parsed FeatureList table (chapter 2 §“FeatureList table”).

Layout:

  0 / 2 / featureCount
  2 / 6 / featureRecords[]   // (tag[4] + featureOffset[2])

The records “should be” sorted by tag (the spec phrase “alphabetically by feature tag” is “should”) but ties on a tag are allowed because a feature implementation may differ per script / language system. Iteration order is on-disk; tag lookup is linear.

Implementations

impl<'a> FeatureList<'a>

pub fn parse(bytes: &'a [u8]) -> Result<Self, Error>

pub fn count(&self) -> u16

Number of feature records.

pub fn is_empty(&self) -> bool

true iff the list is empty.

pub fn tag(&self, i: u16) -> Option<[u8; 4]>

Tag of feature record i.

pub fn feature(&self, i: u16) -> Option<Result<Feature<'a>, Error>>

Parse the Feature referenced by record i.

pub fn iter(&self) -> FeatureListIter<'a>

Iterate (tag, feature_result) pairs in on-disk order.

Trait Implementations

impl<'a> Clone for FeatureList<'a>

fn clone(&self) -> FeatureList<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for FeatureList<'a>

impl<'a> Debug for FeatureList<'a>

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

Formats the value using the given formatter.