From f665ea358b08a7c3df864bb0f495c69dba35bcd8 Mon Sep 17 00:00:00 2001
From: pca006132 <john.lck40@gmail.com>
Date: Wed, 28 Jul 2021 10:44:58 +0800
Subject: [PATCH] fixed fold

---
 nac3core/src/typecheck/type_inferencer/mod.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/nac3core/src/typecheck/type_inferencer/mod.rs b/nac3core/src/typecheck/type_inferencer/mod.rs
index 5eecb182..754ecd97 100644
--- a/nac3core/src/typecheck/type_inferencer/mod.rs
+++ b/nac3core/src/typecheck/type_inferencer/mod.rs
@@ -56,9 +56,9 @@ impl<'a> fold::Fold<()> for Inferencer<'a> {
         let stmt = match node.node {
             // we don't want fold over type annotation
             ast::StmtKind::AnnAssign { target, annotation, value, simple } => {
-                let target = Box::new(fold::fold_expr(self, *target)?);
+                let target = Box::new(self.fold_expr(*target)?);
                 let value = if let Some(v) = value {
-                    let ty = Box::new(fold::fold_expr(self, *v)?);
+                    let ty = Box::new(self.fold_expr(*v)?);
                     self.unifier.unify(target.custom.unwrap(), ty.custom.unwrap())?;
                     Some(ty)
                 } else {