Fixing PHPStan and running it in v8 only

Author: moufmouf

.github/workflows/continuous_integration.yml

@@ -55,9 +55,11 @@ jobs:
 
       - name: "Run static code analysis with phpstan/phpstan"
         run: "composer phpstan"
+        if: ${{ matrix.php-version == '8.0' }}
 
       - name: "Run coding standard checks with squizlabs/php_codesniffer"
         run: "composer cs-check"
+        if: ${{ matrix.php-version == '8.0' }}
 
       - name: "Archive code coverage results"
         uses: "actions/upload-artifact@v1"

src/AnnotationReader.php

@@ -270,7 +270,7 @@ private function getClassAnnotation(ReflectionClass $refClass, string $annotatio
                 $attribute = $refClass->getAttributes($annotationClass)[0] ?? null;
                 if ($attribute) {
                     $instance = $attribute->newInstance();
-                    assert($instance instanceof T);
+                    assert($instance instanceof $annotationClass);
                     return $instance;
                 }
             }