Trait AnyMapGroup

trait AnyMapGroup {
    const IS_CONSTANT: bool;

    // Required methods
    fn start_char_code(&self) -> u32;
    fn end_char_code(&self) -> u32;
    fn ref_glyph_id(&self) -> u32;

    // Provided method
    fn compute_glyph_id(
        codepoint: u32,
        start_char_code: u32,
        ref_glyph_id: u32,
    ) -> GlyphId { ... }
}

Trait to unify constant and sequential map groups.

Required Associated Constants

const IS_CONSTANT: bool

Required Methods

fn start_char_code(&self) -> u32

fn end_char_code(&self) -> u32

fn ref_glyph_id(&self) -> u32

Either start glyph id for a sequential group or just glyph id for a constant group.

Provided Methods

fn compute_glyph_id( codepoint: u32, start_char_code: u32, ref_glyph_id: u32, ) -> GlyphId

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl AnyMapGroup for ConstantMapGroup

const IS_CONSTANT: bool = true

impl AnyMapGroup for SequentialMapGroup

const IS_CONSTANT: bool = false