From 49b3b6acbd3e7a3bf98ffe42ef906e78d364399a Mon Sep 17 00:00:00 2001
From: li3317 <li3317@purdue.edu>
Date: Thu, 11 Feb 2021 01:55:50 -0500
Subject: [PATCH] Return empty LookupResult if lookup range beyond body

---
 lib/models/documents/nodes/container.dart | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/lib/models/documents/nodes/container.dart b/lib/models/documents/nodes/container.dart
index c5154622..b4a4aa58 100644
--- a/lib/models/documents/nodes/container.dart
+++ b/lib/models/documents/nodes/container.dart
@@ -59,11 +59,8 @@ abstract class Container<T extends Node> extends Node {
   }
 
   ChildQuery queryChild(int offset, bool inclusive) {
-    if (offset < 0) {
-      throw ('Offset cannot be negative');
-    }
-    if (offset > length) {
-      throw ('offset $offset > $length');
+    if (offset < 0 || offset > length) {
+      return ChildQuery(null, 0);
     }
 
     for (Node node in children) {