Fix new Psalm errors

.github/workflows/static-analysis.yml

@@ -26,4 +26,4 @@ on:
 jobs:
   static-analysis:
     name: "Static Analysis"
-    uses: "doctrine/.github/.github/workflows/static-analysis.yml@3.0.0"
+    uses: "doctrine/.github/.github/workflows/static-analysis.yml@4.0.0"

composer.json

@@ -34,7 +34,7 @@
         "phpstan/phpstan": "^1.3",
         "phpunit/phpunit": "^7.5 || ^8.5 || ^9.5",
         "psalm/plugin-phpunit": "^0.18.3",
-        "vimeo/psalm": "^4.11 || ^5.0"
+        "vimeo/psalm": "^4.11 || ^5.21"
     },
     "autoload": {
         "psr-4": {

psalm.xml

@@ -1,11 +1,13 @@
 <?xml version="1.0"?>
 <psalm
     errorLevel="1"
-    phpVersion="8.1"
+    phpVersion="8.3"
     resolveFromConfigFile="true"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xmlns="https://getpsalm.org/schema/config"
     xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
+    findUnusedBaselineEntry="true"
+    findUnusedCode="true"
 >
     <projectFiles>
         <directory name="src"/>
@@ -52,6 +54,12 @@
                 <file name="src/Token.php" />
             </errorLevel>
         </MixedReturnStatement>
+        <PossiblyUnusedProperty>
+            <errorLevel type="suppress">
+                <!-- TODO: Cover this property in a test -->
+                <referencedProperty name="Doctrine\Common\Lexer\Token::$position"/>
+            </errorLevel>
+        </PossiblyUnusedProperty>
         <ReferenceConstraintViolation>
             <errorLevel type="suppress">
                 <!-- https://github.com/vimeo/psalm/issues/8891 -->

src/AbstractLexer.php

@@ -70,7 +70,7 @@ abstract class AbstractLexer
     /**
      * Composed regex for input parsing.
      *
-     * @var string|null
+     * @var non-empty-string|null
      */
     private $regex;