Struct earlgrey::GrammarBuilder

pub struct GrammarBuilder { /* fields omitted */ }

Builds a Gramar while validating existence of Symbols and checking rules.

Methods

impl GrammarBuilder

pub fn nonterm<S>(self, name: S) -> Self where
    S: Into<String>, 

pub fn terminal<S, P>(self, name: S, pred: P) -> Self where
    S: Into<String>,
    P: 'static + Fn(&str) -> bool, 

pub fn quiet_nonterm<S>(&mut self, name: S) where
    S: Into<String>, 

pub fn quiet_terminal<S, P>(&mut self, name: S, pred: P) where
    S: Into<String>,
    P: 'static + Fn(&str) -> bool, 

pub fn rule<S, S2>(self, head: S, spec: &[S2]) -> Self where
    S: AsRef<str>,
    S2: AsRef<str>, 

pub fn quiet_rule<S, S2>(&mut self, head: S, spec: &[S2]) where
    S: AsRef<str>,
    S2: AsRef<str>, 

pub fn into_grammar<S>(self, start: S) -> Result<Grammar, String> where
    S: Into<String>, 

Consume builder into Grammar

pub fn unique_symbol_name(&self) -> String

Generate unique name for a Symbol (used to build grammar mechanically)

Trait Implementations

impl Default for GrammarBuilder

fn default() -> GrammarBuilder

Returns the "default value" for a type.