Enum SyntaxItem 

pub enum SyntaxItem {
    Token(TokenKind),
    Category(String),
    Optional(Box<SyntaxItem>),
    Many(Box<SyntaxItem>),
    Group(Vec<SyntaxItem>),
}

An item in a syntax parser specification.

Variants

Token(TokenKind)

A specific token (keyword, punctuation, etc.).

Category(String)

A syntactic category placeholder (e.g. term, ident).

Optional(Box<SyntaxItem>)

An optional sub-item.

Many(Box<SyntaxItem>)

Zero-or-more repetition.

Group(Vec<SyntaxItem>)

A grouped sequence.

Trait Implementations

impl Clone for SyntaxItem

fn clone(&self) -> SyntaxItem

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SyntaxItem

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

Formats the value using the given formatter.

impl Display for SyntaxItem

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

Formats the value using the given formatter.

impl PartialEq for SyntaxItem

fn eq(&self, other: &SyntaxItem) -> 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 StructuralPartialEq for SyntaxItem