From fbaa420ed550e9c3e7cdc09d4a8ec22bfbd782a6 Mon Sep 17 00:00:00 2001
From: JSDurand <mmemmew@gmail.com>
Date: Mon, 27 Feb 2023 12:36:41 +0800
Subject: before a major refactor

I decide to adopt a new approach of recording and updating item
derivation forests.  Since this affects a lot of things, I decide to
commit before the refactor, so that I can create a branch for that
refactor.
---
 nfa/src/default/regex.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'nfa/src/default/regex.rs')

diff --git a/nfa/src/default/regex.rs b/nfa/src/default/regex.rs
index 5e0d53b..1c22687 100644
--- a/nfa/src/default/regex.rs
+++ b/nfa/src/default/regex.rs
@@ -4,6 +4,7 @@ use graph::{error::Error as GError, ALGraph, ExtGraph, Graph, GraphLabel};
 
 use crate::{desrec::DesRec, error::Error, Regex};
 
+#[cfg(feature = "recursion")]
 use receme::{algebra::Algebra, catana::Cata};
 
 use std::{
@@ -193,7 +194,7 @@ impl<T: GraphLabel> DefaultRegex<T> {
     }
 }
 
-// REVIEW: This may not be needed.
+#[cfg(feature = "recursion")]
 impl<S: GraphLabel, T, A> Cata<T, Vec<T>, A> for &DefaultRegex<S>
 where
     A: Algebra<T, Vec<T>>,
-- 
cgit v1.2.3-18-g5258