Fix up self check

Author: dereuromark

PSR2R/Sniffs/Commenting/DocBlockReturnSelfSniff.php

@@ -31,10 +31,14 @@ public function register(): array {
 	 */
 	public function process(File $phpCsFile, $stackPointer): void {
 		$tokens = $phpCsFile->getTokens();
-		if (($stackPointer > 1) && ($tokens[$stackPointer - 2]['type'] === 'T_STATIC')) {
+		if (($stackPointer > 1) && ($tokens[$stackPointer - 2]['code'] === T_STATIC)) {
 			return; // Skip static function declarations
 		}
 
+		if ($tokens[$stackPointer]['code'] === T_FUNCTION && $this->isNonChainable($tokens, $stackPointer)) {
+			return;
+		}
+
 		$docBlockEndIndex = $this->findRelatedDocBlock($phpCsFile, $stackPointer);
 
 		if (!$docBlockEndIndex) {
@@ -70,11 +74,39 @@ public function process(File $phpCsFile, $stackPointer): void {
 				continue;
 			}
 
+			if (strpos($content, '|') !== false) {
+				return;
+			}
+
 			$parts = explode('|', $content);
 			$this->fixParts($phpCsFile, $classNameIndex, $parts, $appendix);
 		}
 	}
 
+	/**
+	 * @param array<array<string, mixed>> $tokens
+	 * @param int $stackPointer
+	 *
+	 * @return bool
+	 */
+	protected function isNonChainable(array $tokens, int $stackPointer): bool {
+		if (empty($tokens[$stackPointer]['scope_opener'])) {
+			return false;
+		}
+
+		$startIndex = $tokens[$stackPointer]['scope_opener'];
+		$endIndex = $tokens[$stackPointer]['scope_closer'];
+		$i = $startIndex + 1;
+		while ($i < $endIndex) {
+			if ($tokens[$i]['code'] === T_NEW) {
+				return true;
+			}
+			$i++;
+		}
+
+		return false;
+	}
+
 	/**
 	 * @param \PHP_CodeSniffer\Files\File $phpCsFile
 	 * @param int $classNameIndex