add support for php 8.4: explicit nullables (#15)

Author: themasch

.github/workflows/buildcheck.yml

@@ -18,6 +18,7 @@ jobs:
           - "8.1"
           - "8.2"
           - "8.3"
+          - "8.4"
         composer:
           - ""
           - "--prefer-lowest"

src/Parser.php

@@ -36,7 +36,7 @@ final class Parser implements ParserInterface
      *
      * @param FactoryInterface $factory A segment factory for creating segments
      */
-    public function __construct(FactoryInterface $factory = null, TokenizerInterface $tokenizer = null)
+    public function __construct(?FactoryInterface $factory = null, ?TokenizerInterface $tokenizer = null)
     {
         if ($factory === null) {
             $factory = new Factory();
@@ -59,7 +59,7 @@ public function __construct(FactoryInterface $factory = null, TokenizerInterface
      * @return SegmentInterface[]
      * @throws ParseException
      */
-    public function parse(string $message, ControlCharactersInterface $characters = null): iterable
+    public function parse(string $message, ?ControlCharactersInterface $characters = null): iterable
     {
         $characters = $this->getControlCharacters($message, $characters);
 
@@ -79,7 +79,7 @@ public function parse(string $message, ControlCharactersInterface $characters =
      *
      * @return ControlCharactersInterface
      */
-    private function getControlCharacters(string &$message, ControlCharactersInterface $characters = null): ControlCharactersInterface
+    private function getControlCharacters(string &$message, ?ControlCharactersInterface $characters = null): ControlCharactersInterface
     {
         if ($characters === null) {
             $characters = new ControlCharacters();

src/ParserInterface.php

@@ -17,5 +17,5 @@ interface ParserInterface
      * @return iterable<SegmentInterface>
      * @throws ParseException
      */
-    public function parse(string $message, ControlCharactersInterface $characters = null): iterable;
+    public function parse(string $message, ?ControlCharactersInterface $characters = null): iterable;
 }

src/Serializer.php

@@ -25,7 +25,7 @@ final class Serializer implements SerializerInterface
     /**
      * @param ControlCharactersInterface|null $characters
      */
-    public function __construct(ControlCharactersInterface $characters = null)
+    public function __construct(?ControlCharactersInterface $characters = null)
     {
         if ($characters === null) {
             $characters = new ControlCharacters();

tests/ParserTest.php

@@ -29,7 +29,7 @@ public function setUp(): void
     }
 
 
-    public function getControlCharacters(string &$message, ControlCharactersInterface $characters = null): void
+    public function getControlCharacters(string &$message, ?ControlCharactersInterface $characters = null): void
     {
         if ($characters === null) {
             $characters = Mockery::mock(ControlCharactersInterface::class);