Fix remaining Hoa PHP 8.1 deprecations

patches/Buffer.patch

@@ -0,0 +1,56 @@
+@package hoa/iterator
+
+--- Buffer.php	2017-01-10 11:34:47.000000000 +0100
++++ Buffer.php	2021-10-30 16:36:22.000000000 +0200
+@@ -103,7 +103,7 @@
+      *
+      * @return  \Iterator
+      */
+-    public function getInnerIterator()
++    public function getInnerIterator(): ?\Iterator
+     {
+         return $this->_iterator;
+     }
+@@ -133,6 +133,7 @@
+      *
+      * @return  mixed
+      */
++	#[\ReturnTypeWillChange]
+     public function current()
+     {
+         return $this->getBuffer()->current()[self::BUFFER_VALUE];
+@@ -143,6 +144,7 @@
+      *
+      * @return  mixed
+      */
++	#[\ReturnTypeWillChange]
+     public function key()
+     {
+         return $this->getBuffer()->current()[self::BUFFER_KEY];
+@@ -153,7 +155,7 @@
+      *
+      * @return  void
+      */
+-    public function next()
++    public function next(): void
+     {
+         $innerIterator = $this->getInnerIterator();
+         $buffer        = $this->getBuffer();
+@@ -204,7 +206,7 @@
+      *
+      * @return  void
+      */
+-    public function rewind()
++    public function rewind(): void
+     {
+         $innerIterator = $this->getInnerIterator();
+         $buffer        = $this->getBuffer();
+@@ -228,7 +230,7 @@
+      *
+      * @return  bool
+      */
+-    public function valid()
++    public function valid(): bool
+     {
+         return
+             $this->getBuffer()->valid() &&

patches/Lookahead.patch

@@ -0,0 +1,54 @@
+@package hoa/iterator
+
+--- Lookahead.php	2017-01-10 11:34:47.000000000 +0100
++++ Lookahead.php	2021-10-30 16:35:30.000000000 +0200
+@@ -93,7 +93,7 @@
+      *
+      * @return  \Iterator
+      */
+-    public function getInnerIterator()
++    public function getInnerIterator(): ?\Iterator
+     {
+         return $this->_iterator;
+     }
+@@ -103,6 +103,7 @@
+      *
+      * @return  mixed
+      */
++	#[\ReturnTypeWillChange]
+     public function current()
+     {
+         return $this->_current;
+@@ -113,6 +114,7 @@
+      *
+      * @return  mixed
+      */
++	#[\ReturnTypeWillChange]
+     public function key()
+     {
+         return $this->_key;
+@@ -123,6 +125,7 @@
+      *
+      * @return  void
+      */
++	#[\ReturnTypeWillChange]
+     public function next()
+     {
+         $innerIterator = $this->getInnerIterator();
+@@ -143,6 +146,7 @@
+      *
+      * @return  void
+      */
++	#[\ReturnTypeWillChange]
+     public function rewind()
+     {
+         $out = $this->getInnerIterator()->rewind();
+@@ -156,7 +160,7 @@
+      *
+      * @return  bool
+      */
+-    public function valid()
++    public function valid(): bool
+     {
+         return $this->_valid;
+     }

patches/Node.patch

@@ -0,0 +1,48 @@
+@package hoa/protocol
+
+--- Node/Node.php	2017-01-14 13:26:10.000000000 +0100
++++ Node/Node.php	2021-10-30 16:32:43.000000000 +0200
+@@ -108,7 +108,7 @@
+      * @return  \Hoa\Protocol\Protocol
+      * @throws  \Hoa\Protocol\Exception
+      */
+-    public function offsetSet($name, $node)
++    public function offsetSet($name, $node): void
+     {
+         if (!($node instanceof self)) {
+             throw new Protocol\Exception(
+@@ -141,6 +141,7 @@
+      * @return  \Hoa\Protocol\Protocol
+      * @throws  \Hoa\Protocol\Exception
+      */
++	#[\ReturnTypeWillChange]
+     public function offsetGet($name)
+     {
+         if (!isset($this[$name])) {
+@@ -160,7 +161,7 @@
+      * @param   string  $name    Node's name.
+      * @return  bool
+      */
+-    public function offsetExists($name)
++    public function offsetExists($name): bool
+     {
+         return true === array_key_exists($name, $this->_children);
+     }
+@@ -171,7 +172,7 @@
+      * @param   string  $name    Node's name to remove.
+      * @return  void
+      */
+-    public function offsetUnset($name)
++    public function offsetUnset($name): void
+     {
+         unset($this->_children[$name]);
+
+@@ -365,7 +366,7 @@
+      *
+      * @return  \ArrayIterator
+      */
+-    public function getIterator()
++    public function getIterator(): \Traversable
+     {
+         return new \ArrayIterator($this->_children);
+     }