Merge pull request #127 from TheBlueMatt/main

[ldk-java] / src / main / java / org / ldk / util / InternalUtils.java

diff --git a/src/main/java/org/ldk/util/InternalUtils.java b/src/main/java/org/ldk/util/InternalUtils.java
index 692639d4686475479b8ad79a2aa45218e85f18ab..4e706ec10d24d232505a555533a544d3e89a6373 100644 (file)
--- a/src/main/java/org/ldk/util/InternalUtils.java
+++ b/src/main/java/org/ldk/util/InternalUtils.java
@@ -2,9 +2,24 @@ package org.ldk.util;
 
 public class InternalUtils {
     public static byte[] check_arr_len(byte[] arr, int length) throws IllegalArgumentException {
-        if (arr.length != length) {
+        if (arr != null && arr.length != length) {
             throw new IllegalArgumentException("Array must be of fixed size " + length + " but was of length " + arr.length);
         }
         return arr;
     }
+
+    public static short[] check_arr_16_len(short[] arr, int length) throws IllegalArgumentException {
+        if (arr != null && arr.length != length) {
+            throw new IllegalArgumentException("Array must be of fixed size " + length + " but was of length " + arr.length);
+        }
+        return arr;
+    }
+
+    public static byte[] convUInt5Array(UInt5[] u5s) {
+        byte[] res = new byte[u5s.length];
+        for (int i = 0; i < u5s.length; i++) {
+            res[i] = u5s[i].getVal();
+        }
+        return res;
+    }
 }