Enum DefinitionMap

pub enum DefinitionMap<'a> {
    Ref(&'a [Definition]),
    Mut(&'a mut [Definition]),
}

Map of function number or opcode to code definitions.

The Ref vs Mut distinction exists because these can be modified from the font and control value programs but not from a glyph program. In addition, hinting instance state is immutable once initialized so this captures that in a type safe way.

Variants

Ref(&'a [Definition])

Mut(&'a mut [Definition])

Implementations

impl DefinitionMap<'_>

pub fn allocate(&mut self, key: i32) -> Result<&mut Definition, HintErrorKind>

Attempts to allocate a new definition entry with the given key.

Overriding a definition is legal, so if an existing active entry is found with the same key, that one will be returned. Otherwise, an inactive entry will be chosen.

pub fn get(&self, key: i32) -> Result<&Definition, HintErrorKind>

Returns the definition with the given key.

pub fn reset(&mut self)

If the map is mutable, resets all definitions to the default value.