Trait ContextRule 

trait ContextRule<'a>: FontRead<'a> {
    // Required methods
    fn parse(&self) -> ParsedRule<'a>;
    fn first_input(&self) -> Option<u16>;
}

Required Methods

fn parse(&self) -> ParsedRule<'a>

Parse all of the rule’s fields in one pass.

fn first_input(&self) -> Option<u16>

The first glyph/class of the input sequence, or None if the input sequence is empty.

Much cheaper than a full parse; used by the skip-ahead loops, which discard most of the rules they visit.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<'a> ContextRule<'a> for ChainedClassSequenceRule<'a>

fn parse(&self) -> ParsedRule<'a>

fn first_input(&self) -> Option<u16>

impl<'a> ContextRule<'a> for ChainedSequenceRule<'a>

fn parse(&self) -> ParsedRule<'a>

fn first_input(&self) -> Option<u16>

impl<'a> ContextRule<'a> for ClassSequenceRule<'a>

fn parse(&self) -> ParsedRule<'a>

fn first_input(&self) -> Option<u16>

impl<'a> ContextRule<'a> for SequenceRule<'a>

fn parse(&self) -> ParsedRule<'a>

fn first_input(&self) -> Option<u16>

Implementors