onefig 1.3.4

The only configuration language you need; a configuration language for configuration files.
Documentation 
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use flexar::prelude::*;
use crate::{lexer::Token, errors::SyntaxError, visitor::{VisitValue, DbgValue, ConfHashMap, VisitConfig, ActionTree}};
use super::stmt::Stmt;

#[derive(Debug)]
pub enum Table {
    Head(Node<Stmt>, Box<Node<Table>>),
    Tail(Node<Stmt>),
    Empty,
}

flexar::parser! {
    [[Table] parxt: Token]
    parse {
        (LBrace) => {
            (RBrace) => (Empty);
            [item: Self::table_item] => {
                (RBrace) => [item];
            } (else Err(SY014: parxt.current_token()))
        };
    } else Err(SY013: parxt.current_token());

    table_item {
        [head: Stmt::parse] => {
            (Sep(_)) => {
                [tail: Self::table_item] => (Head(head, Box::new(tail)));
            } (else Ok(Self::Tail(head)))
            [tail: Self::table_item] => (Head(head, Box::new(tail)));
        } (else Ok(Self::Tail(head)))
    } else Err(SY014: parxt.current_token());
}

impl VisitValue for Node<Table> {
    fn visit(self, visitor: &mut ActionTree, scope: &[(Position, Box<str>)]) -> (Position, DbgValue) {
        let mut current = self.node;
        let mut out = ConfHashMap::new();

        loop {
            match current {
                Table::Empty => break,
                Table::Tail(x) => { x.visit(visitor, &mut out, scope); break },
                Table::Head(x, y) => {
                    x.visit(visitor, &mut out, scope);
                    current = y.node;
                }
            }
        }

        (self.position, DbgValue::Table(out))
    }
}