From 2ee1c72b6a79fd6402b6d7fa47bf5ee1f3816f57 Mon Sep 17 00:00:00 2001
From: Dave Holoway <adelphes@gmail.com>
Date: Sun, 28 Jun 2020 21:24:50 +0100
Subject: [PATCH] handle null token passed to ParseProblem

---
 langserver/java/parsetypes/parse-problem.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/langserver/java/parsetypes/parse-problem.js b/langserver/java/parsetypes/parse-problem.js
index d19aaf4..0602248 100644
--- a/langserver/java/parsetypes/parse-problem.js
+++ b/langserver/java/parsetypes/parse-problem.js
@@ -16,7 +16,11 @@ class ParseProblem {
      * @param {Severity} severity 
      */
     constructor(token, message, severity) {
-        if (Array.isArray(token)) {
+        if (!token || (Array.isArray(token) && !token[0])) {
+            this.startIdx = 0;
+            this.endIdx = 1;
+        }
+        else if (Array.isArray(token)) {
             this.startIdx = token[0].range.start;
             const lastToken = token[token.length - 1];
             this.endIdx = lastToken.range.start + lastToken.range.length;