SlevomatCodingStandard.Variables.UnusedVariable: Fixed false positive

Author: kukulich

SlevomatCodingStandard/Sniffs/Variables/UnusedVariableSniff.php

@@ -642,6 +642,10 @@ private function isPartOfStatementAndWithIncrementOrDecrementOperator(File $phpc
 			return false;
 		}
 
+		if ($tokens[$previousPointer]['code'] === T_OPEN_PARENTHESIS) {
+			$previousPointer = TokenHelper::findPreviousEffective($phpcsFile, $previousPointer - 1);
+		}
+
 		return in_array(
 			$tokens[$previousPointer]['code'],
 			array_merge([T_STRING_CONCAT, T_ECHO], Tokens::$operators, Tokens::$assignmentTokens, Tokens::$booleanOperators),

tests/Sniffs/Variables/data/unusedVariableNoErrors.php

@@ -396,3 +396,13 @@ function () {
 
 	return $map;
 };
+
+function ($path, $name) {
+	$count = 0;
+
+	while (is_file($path . '/' . $name)) {
+		$name = $name . '-' . (++$count) . '.php';
+	}
+
+	return $name;
+};