Use exception for signaling leap second

src/main/java/com/ethlo/time/FastInternetDateTimeUtil.java

@@ -35,8 +35,6 @@
 public class FastInternetDateTimeUtil extends AbstractRfc3339 implements W3cDateTimeUtil
 {
     public static final int LEAP_SECOND_SECONDS = 60;
-    private final StdJdkInternetDateTimeUtil delegate = new StdJdkInternetDateTimeUtil();
-
     private static final char PLUS = '+';
     private static final char MINUS = '-';
     private static final char DATE_SEPARATOR = '-';
@@ -48,6 +46,7 @@ public class FastInternetDateTimeUtil extends AbstractRfc3339 implements W3cDate
     private static final char ZULU_UPPER = 'Z';
     private static final char ZULU_LOWER = 'z';
     private static final int[] widths = new int[]{100_000_000, 10_000_000, 1_000_000, 100_000, 10_000, 1_000, 100, 10, 1};
+    private final StdJdkInternetDateTimeUtil delegate = new StdJdkInternetDateTimeUtil();
 
     @Override
     public OffsetDateTime parseDateTime(String s)
@@ -414,7 +413,7 @@ else if (remaining == 0)
                     && utcMinute == 59)
             {
                 // Consider it a leap second
-                return OffsetDateTime.of(year, month, day, hour, minute, 59, fractions, offset).plusSeconds(1);
+                throw new LeapSecondException(OffsetDateTime.of(year, month, day, hour, minute, 59, fractions, offset).plusSeconds(1), second);
             }
         }
         return OffsetDateTime.of(year, month, day, hour, minute, second, fractions, offset);

src/main/java/com/ethlo/time/LeapSecondException.java

@@ -0,0 +1,5 @@
+package com.ethlo.time;
+
+public class LeapSecondException extends Throwable
+{
+}

src/test/java/com/ethlo/time/FastCorrectnessTest.java

@@ -9,9 +9,9 @@
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *      http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.