Struct PrologDCGBuilder 

pub struct PrologDCGBuilder { /* private fields */ }

Fluent builder for DcgRule.

Implementations

impl PrologDCGBuilder

pub fn lhs(lhs: PrologTerm) -> Self

Start a DCG rule with the given LHS nonterminal.

pub fn nonterminal(self, t: PrologTerm) -> Self

Add a nonterminal call.

pub fn terminals(self, ts: Vec<PrologTerm>) -> Self

Add terminal tokens.

pub fn epsilon(self) -> Self

Add an epsilon.

pub fn guard(self, g: PrologTerm) -> Self

Add a Prolog guard {Goals}.

pub fn comment(self, c: impl Into<String>) -> Self

Add a comment.

pub fn build(self) -> DcgRule

Build the DcgRule.

pub fn emit(self) -> String

Emit directly.