Fix compatibility issue with phpstan 2.0 parser

The phpstan 2.0 release contains a fix which resolves the existing bug
in the old parser that didn't take the whole description when it was
multiline. Now the workaround is disabled when using phpstan parser v2

Fixes #393

src/DocBlock/Tags/Factory/AbstractPHPStanFactory.php

@@ -75,11 +75,13 @@ class AbstractPHPStanFactory implements Factory
     {
         $tokens = $this->tokenizeLine($tagLine);
         $ast = $this->parser->parseTag($tokens);
-        if (property_exists($ast->value, 'description') === true) {
-            $ast->value->setAttribute(
-                'description',
-                $ast->value->description . $tokens->joinUntil(Lexer::TOKEN_END)
-            );
+        if (class_exists(ParserConfig::class) === false) {
+            if (property_exists($ast->value, 'description') === true) {
+                $ast->value->setAttribute(
+                    'description',
+                    $ast->value->description . $tokens->joinUntil(Lexer::TOKEN_END)
+                );
+            }
         }
 
         if ($context === null) {

tests/integration/InterpretingDocBlocksTest.php

@@ -463,4 +463,22 @@ DOCBLOCK;
             $docblock->getTags()
         );
     }
+
+    public function testParamTagDescriptionIsCorrectly(): void
+    {
+        $docComment = '
+	/**
+	 * @param int $baz Lorem ipsum dolor sit amet, consectetur adipiscing elit. Maecenas varius, tellus in cursus
+	 *     dictum, justo odio sagittis velit, id iaculis mi dui id nisi.
+	 */
+';
+
+        $factory = DocBlockFactory::createInstance();
+        $docblock = $factory->create($docComment);
+
+        $paramTags = $docblock->getTagsWithTypeByName('param')[0];
+
+        self::assertSame('Lorem ipsum dolor sit amet, consectetur adipiscing elit. Maecenas varius, tellus in cursus
+dictum, justo odio sagittis velit, id iaculis mi dui id nisi.', (string) $paramTags->getDescription());
+    }
 }