Enum GrammarNode 

pub enum GrammarNode {
    Literal(Vec<u8>),
    CharClass {
        ranges: Vec<CharRange>,
        negated: bool,
    },
    RuleRef(String),
    Sequence(Vec<GrammarNode>),
    Alternation(Vec<GrammarNode>),
    Repeat {
        node: Box<GrammarNode>,
        min: usize,
        max: Option<usize>,
    },
}

A single node in the grammar tree.

Variants

Literal(Vec<u8>)

Matches an exact sequence of bytes.

CharClass

Matches a single byte that falls within any of the listed ranges. If negated is true, matches bytes that fall outside all ranges.

Fields

ranges: Vec<CharRange>

negated: bool

RuleRef(String)

Reference to another named rule.

Sequence(Vec<GrammarNode>)

Matches all items in the sequence, in order.

Alternation(Vec<GrammarNode>)

Matches one of the alternatives.

Repeat

Repeat a node min..=max times (max=None means unbounded).

Fields

node: Box<GrammarNode>

min: usize

max: Option<usize>

Trait Implementations

impl Clone for GrammarNode

fn clone(&self) -> GrammarNode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GrammarNode

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

Formats the value using the given formatter.