From 72515a4ed137071e441bb1aeda1940749e985844 Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Wed, 22 Dec 2021 19:54:54 +0100
Subject: [PATCH 1/2] Fix warnings on PHP 8.1

With, PHP 8.1 lack of a return type hint for a method of a child class,
whose parent has return type hint is considered mismatch.

https://php.watch/versions/8.1/internal-method-return-types#no-return-type

Since standard classes and interfaces started adding typehings,
errors like the following are produced:

    PHP Deprecated: Return type of Violet\StreamingJsonEncoder\AbstractJsonEncoder::current() should either be compatible with Iterator::current(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice

`void` type is only available since PHP 7.1 and `mixed` type requires PHP 8.0:

https://www.php.net/manual/en/language.types.declarations.php#language.types.declarations.void
https://www.php.net/manual/en/language.types.declarations.php#language.types.declarations.mixed

To preserve compatibility with PHP < 8.0, we need to add the attribute.
---
 src/AbstractJsonEncoder.php | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/AbstractJsonEncoder.php b/src/AbstractJsonEncoder.php
index 31adcc4..08964e0 100644
--- a/src/AbstractJsonEncoder.php
+++ b/src/AbstractJsonEncoder.php
@@ -123,6 +123,7 @@ private function initialize()
      * Returns the current number of step in the encoder.
      * @return int|null The current step number as integer or null if the current state is not valid
      */
+    #[\ReturnTypeWillChange]
     public function key()
     {
         $this->initialize();
@@ -134,6 +135,7 @@ public function key()
      * Tells if the encoder has a valid current state.
      * @return bool True if the iterator has a valid state, false if not
      */
+    #[\ReturnTypeWillChange]
     public function valid()
     {
         $this->initialize();
@@ -145,11 +147,13 @@ public function valid()
      * Returns the current value or state from the encoder.
      * @return mixed The current value or state from the encoder
      */
+    #[\ReturnTypeWillChange]
     abstract public function current();
 
     /**
      * Returns the JSON encoding to the beginning.
      */
+    #[\ReturnTypeWillChange]
     public function rewind()
     {
         if ($this->step === 0) {
@@ -172,6 +176,7 @@ public function rewind()
     /**
      * Iterates the next token or tokens to the output stream.
      */
+    #[\ReturnTypeWillChange]
     public function next()
     {
         $this->initialize();

From 30c0570ae07a8bc461ec4ecff5b0886c8d3909b2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Riikka=20Kalliom=C3=A4ki?= <riikka.kalliomaki@gmail.com>
Date: Mon, 27 Dec 2021 21:09:36 +0200
Subject: [PATCH 2/2] Add php 8.1 to test setup

---
 .github/workflows/main.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 50a8b28..f02c85e 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       matrix:
         operating-system: [ubuntu-latest]
-        php-versions: ['5.6', '7.0', '7.1', '7.2', '7.3', '7.4', '8.0']
+        php-versions: ['5.6', '7.0', '7.1', '7.2', '7.3', '7.4', '8.0', '8.1']
     runs-on: ${{ matrix.operating-system }}
     steps:
       - name: Checkout