organic/src/parser/nom_context.rs

use std::cell::RefCell;
use std::rc::Rc;

use nom::branch::alt;
use nom::combinator::not;
use nom::error::VerboseError;
use nom::IResult;
use nom::Parser;

type ContextReference<'r, T> = Option<&'r ContextLayer<'r, T>>;
type MatcherRef = dyn for<'s> FnMut(&'s str) -> IResult<&'s str, &'s str, VerboseError<&'s str>>;

pub struct ContextLayer<'r, T> {
    data: T,
    parent: ContextReference<'r, T>,
}

pub struct TestContext<'r, T> {
    head: ContextReference<'r, T>,
}

pub struct ContextData<'r> {
    fail_matcher: ChainBehavior<'r>,
}

impl<'r> TestContext<'r, ContextData<'r>> {
    pub fn new() -> Self {
        TestContext { head: None }
    }
}

enum ChainBehavior<'r> {
    AndParent(Option<&'r MatcherRef>),
    IgnoreParent(Option<&'r MatcherRef>),
}