Suppress various serialization warnings (#2877)

Author: pivovarit

vavr/src/main/java/io/vavr/collection/HashArrayMappedTrie.java

@@ -37,7 +37,9 @@
  *
  * @author Ruslan Sennov
  */
-interface HashArrayMappedTrie<K, V> extends Iterable<Tuple2<K, V>> {
+interface HashArrayMappedTrie<K, V> extends Iterable<Tuple2<K, V>>, Serializable {
+
+    static final long serialVersionUID = 1L;
 
     static <K, V> HashArrayMappedTrie<K, V> empty() {
         return EmptyNode.instance();
@@ -167,6 +169,8 @@ private static <K, V> AbstractNode<K, V> getChild(AbstractNode<K, V> node, int i
      */
     abstract class AbstractNode<K, V> implements HashArrayMappedTrie<K, V> {
 
+        private static final long serialVersionUID = 1L;
+
         static final int SIZE = 5;
         static final int BUCKET_SIZE = 1 << SIZE;
         static final int MAX_INDEX_NODE = BUCKET_SIZE >> 1;
@@ -330,6 +334,8 @@ private Object readResolve() {
      */
     abstract class LeafNode<K, V> extends AbstractNode<K, V> {
 
+        private static final long serialVersionUID = 1L;
+
         abstract K key();
 
         abstract V value();

vavr/src/main/java/io/vavr/collection/List.java

@@ -1803,6 +1803,7 @@ final class Cons<T> implements List<T>, Serializable {
 
         private static final long serialVersionUID = 1L;
 
+        @SuppressWarnings("serial") // Conditionally serializable
         private final T head;
         private final List<T> tail;
         private final int length;

vavr/src/main/java/io/vavr/collection/PriorityQueue.java

@@ -38,6 +38,7 @@ public final class PriorityQueue<T> extends io.vavr.collection.AbstractQueue<T,
 
     private static final long serialVersionUID = 1L;
 
+    @SuppressWarnings("serial") // Conditionally serializable
     private final Comparator<? super T> comparator;
     private final Seq<Node<T>> forest;
     private final int size;
@@ -798,6 +799,7 @@ static final class Node<T> implements Serializable {
 
         private static final long serialVersionUID = 1L;
 
+        @SuppressWarnings("serial") // Conditionally serializable
         final T root;
         final int rank;
         final Seq<Node<T>> children;

vavr/src/main/java/io/vavr/collection/Stream.java

@@ -1857,6 +1857,7 @@ abstract class Cons<T> implements Stream<T> {
 
         private static final long serialVersionUID = 1L;
 
+        @SuppressWarnings("serial") // Conditionally serializable
         final T head;
         final Lazy<Stream<T>> tail;