Enum Production 

pub enum Production {
    Terminal(TerminalAtom),
    Seq(Vec<Production>),
    Alt(Vec<Production>),
    Repeat {
        inner: Box<Production>,
        at_least: usize,
    },
    Call {
        head: Box<Production>,
        args: Vec<Production>,
    },
    Ref(Symbol),
}

A codec-neutral grammar production.

Variants

Terminal(TerminalAtom)

A literal or lexeme class named abstractly; renderers supply concrete terminals for the requested codec surface.

Seq(Vec<Production>)

Ordered child productions.

Alt(Vec<Production>)

One-of-many child productions.

Repeat

Repetition of an inner production.

Fields

inner: Box<Production>

The repeated production.

at_least: usize

Minimum number of accepted repetitions.

Call

A call-like form with a head and positional argument productions.

Fields

head: Box<Production>

The rendered call head.

args: Vec<Production>

The rendered positional arguments.

Ref(Symbol)

Reference to a named production in the graph definitions.

Trait Implementations

impl Clone for Production

fn clone(&self) -> Production

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Production

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

Formats the value using the given formatter.

impl Eq for Production

impl PartialEq for Production

fn eq(&self, other: &Production) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Production