Fix format-preserving printer for GenericTagValueNode without description

Author: ondrejmirtes

src/Printer/Printer.php

@@ -534,6 +534,10 @@ private function printArrayFormatPreserving(array $nodes, array $originalNodes,
 					throw new LogicException();
 				}
 
+				if ($itemEndPos < $itemStartPos) {
+					return null;
+				}
+
 				$result .= $originalTokens->getContentBetween($tokenIndex, $itemStartPos);
 
 				if (count($delayedAdd) > 0) {
@@ -742,6 +746,10 @@ private function printNodeFormatPreserving(Node $node, TokenIterator $originalTo
 			throw new LogicException();
 		}
 
+		if ($endPos < $startPos) {
+			return $this->print($node);
+		}
+
 		$result = '';
 		$pos = $startPos;
 		$subNodeNames = array_keys(get_object_vars($node));
@@ -795,6 +803,10 @@ private function printNodeFormatPreserving(Node $node, TokenIterator $originalTo
 				throw new LogicException();
 			}
 
+			if ($subEndPos < $subStartPos) {
+				return $this->print($node);
+			}
+
 			if ($subNode === null) {
 				return $this->print($node);
 			}

tests/PHPStan/Parser/PhpDocParserTest.php

@@ -6765,6 +6765,13 @@ public function dataLinesAndIndexes(): iterable
 				[1, 1, 1, 3],
 			],
 		];
+
+		yield [
+			'/** @api */',
+			[
+				[1, 1, 1, 1],
+			],
+		];
 	}
 
 	/**
@@ -6839,6 +6846,15 @@ public function dataDeepNodesLinesAndIndexes(): iterable
 				[2, 4, 4, 6], // DoctrineArray
 			],
 		];
+
+		yield [
+			'/** @api */',
+			[
+				[1, 1, 0, 3],
+				[1, 1, 1, 1],
+				[1, 1, 3, 1], // GenericTagValueNode is empty so start index is higher than end index
+			],
+		];
 	}
 
 

tests/PHPStan/Printer/PrinterTest.php

@@ -84,6 +84,7 @@ public function dataPrintFormatPreserving(): iterable
 
 		};
 		yield ['/** */', '/** */', $noopVisitor];
+		yield ['/** @api */', '/** @api */', $noopVisitor];
 		yield ['/**
  */', '/**
  */', $noopVisitor];