From bdf3c98f3479b980e7ea1a465fb83b930142b3ea Mon Sep 17 00:00:00 2001
From: Tom Alexander <tom@fizz.buzz>
Date: Sat, 3 Dec 2022 20:47:31 -0500
Subject: [PATCH] Starting to move the org-mode specific context tree stuff
 over.

---
 src/parser/new_context.rs         | 34 +++++++++++++++++++++++++++++++
 src/parser/text_element_parser.rs |  5 ++---
 2 files changed, 36 insertions(+), 3 deletions(-)

diff --git a/src/parser/new_context.rs b/src/parser/new_context.rs
index 8b137891..5f62a674 100644
--- a/src/parser/new_context.rs
+++ b/src/parser/new_context.rs
@@ -1 +1,35 @@
+use nom::error::VerboseError;
+use nom::IResult;
 
+use super::list::List;
+
+type Matcher = dyn for<'s> Fn(&'s str) -> IResult<&'s str, &'s str, VerboseError<&'s str>>;
+
+pub struct ContextTree<'r> {
+    tree: List<ContextElement<'r>>,
+}
+
+impl<'r> ContextTree<'r> {
+    pub fn new() -> Self {
+        ContextTree { tree: List::new() }
+    }
+}
+
+pub enum ContextElement<'r> {
+    FailMatcherNode(FailMatcherNode<'r>),
+    PreviousElementNode(PreviousElementNode<'r>),
+}
+
+pub struct FailMatcherNode<'r> {
+    pub fail_matcher: ChainBehavior<'r>,
+}
+
+pub struct PreviousElementNode<'r> {
+    pub dummy: &'r str,
+}
+
+#[derive(Clone)]
+pub enum ChainBehavior<'r> {
+    AndParent(Option<&'r Matcher>),
+    IgnoreParent(Option<&'r Matcher>),
+}
diff --git a/src/parser/text_element_parser.rs b/src/parser/text_element_parser.rs
index 58f6f88d..ebc94424 100644
--- a/src/parser/text_element_parser.rs
+++ b/src/parser/text_element_parser.rs
@@ -34,13 +34,12 @@ use nom::Parser;
 use tracing::instrument;
 use tracing::trace;
 
-fn context_many_till<'r, C, I, O, E, F, M, T>(
-    context: &'r ContextTree<'r, C>,
+fn context_many_till<'r, I, O, E, F, M, T>(
+    context: &'r ContextTree<'r>,
     mut many_matcher: M,
     mut till_matcher: T,
 ) -> impl FnMut(I) -> IResult<I, (Vec<O>, F), E>
 where
-    C: ContextElement,
     I: Clone + InputLength,
     M: Parser<I, O, E>,
     T: Parser<I, F, E>,