Struct cfgrammar::yacc::ast::GrammarAST

pub struct GrammarAST {
    pub start: Option<String>,
    pub rules: IndexMap<String, Rule>,
    pub prods: Vec<Production>,
    pub tokens: IndexSet<String>,
    pub precs: HashMap<String, Precedence>,
    pub avoid_insert: Option<HashSet<String>>,
    pub implicit_tokens: Option<HashSet<String>>,
    pub epp: HashMap<String, String>,
    pub programs: Option<String>,
}

An AST representing a grammar. This is built up gradually: when it is finished, the complete_and_validate must be called exactly once in order to finish the set-up. At that point, any further mutations made to the struct lead to undefined behaviour.

Fields

start: Option<String>

rules: IndexMap<String, Rule>

prods: Vec<Production>

tokens: IndexSet<String>

precs: HashMap<String, Precedence>

avoid_insert: Option<HashSet<String>>

implicit_tokens: Option<HashSet<String>>

epp: HashMap<String, String>

programs: Option<String>

Methods

impl GrammarAST

pub fn new() -> GrammarAST

pub fn add_rule(&mut self, name: String, actiont: Option<String>)

pub fn add_prod(
    &mut self,
    rule_name: String,
    symbols: Vec<Symbol>,
    precedence: Option<String>,
    action: Option<String>
)

pub fn add_programs(&mut self, s: String)

pub fn get_rule(&self, key: &str) -> Option<&Rule>

pub fn has_token(&self, s: &str) -> bool