From 413d63675b2918e9f63d5b1e461dcd8158b2130c Mon Sep 17 00:00:00 2001
From: Umit Gunduz <umitgunduz@users.noreply.github.com>
Date: Fri, 11 Oct 2019 18:32:26 +0300
Subject: [PATCH] Update Trie.java (#70)

* Update Trie.java

fix firstMatch NullPointerException

* Update Trie.java

change for shorter code
---
 src/main/java/org/ahocorasick/trie/Trie.java | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/main/java/org/ahocorasick/trie/Trie.java b/src/main/java/org/ahocorasick/trie/Trie.java
index 315d749..340b725 100644
--- a/src/main/java/org/ahocorasick/trie/Trie.java
+++ b/src/main/java/org/ahocorasick/trie/Trie.java
@@ -75,8 +75,8 @@ public class Trie {
      * @return null if no matches found.
      */
     public Emit firstMatch(final CharSequence text) {
-        PayloadEmit<String> firstMatch = this.payloadTrie.firstMatch(text);
-        return new Emit(firstMatch.getStart(), firstMatch.getEnd(), firstMatch.getKeyword());
+        final PayloadEmit<String> payload = this.payloadTrie.firstMatch(text);
+        return payload == null ? null : new Emit(payload.getStart(), payload.getEnd(), payload.getKeyword());
     }
 
     /**