From ce9e32b08fce598eaafbd6d653727219c222fd1f Mon Sep 17 00:00:00 2001
From: Danila Fedorin <danila.fedorin@gmail.com>
Date: Fri, 28 Jul 2017 14:57:11 -0700
Subject: [PATCH] Add a toString for UnaryPrefixNode

---
 src/org/nwapw/abacus/tree/UnaryPrefixNode.java | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/org/nwapw/abacus/tree/UnaryPrefixNode.java b/src/org/nwapw/abacus/tree/UnaryPrefixNode.java
index 944e339..dce46c5 100644
--- a/src/org/nwapw/abacus/tree/UnaryPrefixNode.java
+++ b/src/org/nwapw/abacus/tree/UnaryPrefixNode.java
@@ -51,4 +51,9 @@ public class UnaryPrefixNode extends TreeNode {
     public TreeNode getApplyTo() {
         return applyTo;
     }
+
+    @Override
+    public String toString() {
+        return "(" + (applyTo == null ? "null" : applyTo.toString()) + ")" + operation;
+    }
 }