Ignore invalid annotations in TypeHintDeclarationSniff

Author: kukulich

SlevomatCodingStandard/Sniffs/TypeHints/TypeHintDeclarationSniff.php

@@ -440,7 +440,7 @@ private function checkUselessDocComment(\PHP_CodeSniffer_File $phpcsFile, int $f
 		}
 
 		foreach (FunctionHelper::getParametersAnnotations($phpcsFile, $functionPointer) as $parameterAnnotation) {
-			if (preg_match('~^\\S+\\s+(?:(?:\.{3}\\s*)?\$\\S+\\s+)?[^$]~', $parameterAnnotation->getContent())) {
+			if ($parameterAnnotation->getContent() !== null && preg_match('~^\\S+\\s+(?:(?:\.{3}\\s*)?\$\\S+\\s+)?[^$]~', $parameterAnnotation->getContent())) {
 				return;
 			}
 		}
@@ -694,6 +694,10 @@ private function getFunctionParameterTypeHintsDefinitions(\PHP_CodeSniffer_File
 		$parametersNames = FunctionHelper::getParametersNames($phpcsFile, $functionPointer);
 		$parametersTypeHintsDefinitions = [];
 		foreach (FunctionHelper::getParametersAnnotations($phpcsFile, $functionPointer) as $parameterAnnotationNo => $parameterAnnotation) {
+			if ($parameterAnnotation->getContent() === null) {
+				continue;
+			}
+
 			$parameterAnnotationParts = preg_split('~\\s+~', $parameterAnnotation->getContent(), 2);
 			$parameterTypeHintDefinition = $parameterAnnotationParts[0];
 			if (isset($parameterAnnotationParts[1]) && preg_match('~^(?:\.{3}\\s*)?(\$\\S+)~', $parameterAnnotationParts[1], $matches)) {

tests/Sniffs/TypeHints/data/typeHintDeclarationNoErrors.php

@@ -548,4 +548,10 @@ private function nullableMultidimensionalArrayParameter($a)
 	{
 	}
 
+	/**
+	 * @param
+	 * @return
+	 */
+	abstract public function invalidAnnotations();
+
 }