Enum LookupId 

pub enum LookupId {
    Gpos(usize),
    Gsub(usize),
    ExternalGpos(usize),
    ExternalGsub(usize),
    ExternalFrontOfList(usize),
    Empty,
}

IDs assigned to lookups during compilation

Variants

Gpos(usize)

An id for a GPOS lookup

Gsub(usize)

An id for a GSUB lookup

ExternalGpos(usize)

A temporary ID assigned to a GPOS lookup constructed by the client.

This id will be remapped when the external features are merged into the features generated from the FEA.

ExternalGsub(usize)

Like above, but for GSUB.

ExternalFrontOfList(usize)

A temporary ID assigned to a lookup constructed by the client that should be at the front of the lookup list.

This is required for rvrn feature variations.

Empty

Used when a named lookup block has no rules.

We parse this, but then discard it immediately whenever it is referenced.

Trait Implementations

impl Clone for LookupId

fn clone(&self) -> LookupId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LookupId

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

Formats the value using the given formatter.

impl Hash for LookupId

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 Ord for LookupId

fn cmp(&self, other: &LookupId) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for LookupId

fn eq(&self, other: &LookupId) -> 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 PartialOrd for LookupId

fn partial_cmp(&self, other: &LookupId) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for LookupId

impl Eq for LookupId

impl StructuralPartialEq for LookupId