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SQLLinter/Infrastructure/Rules/DuplicateEmptyLineRule.cs

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+using Microsoft.SqlServer.TransactSql.ScriptDom;
+using SQLLinter.Common;
+using SQLLinter.Common.Helpers;
+using System.Text.RegularExpressions;
+
+namespace SQLLinter.Infrastructure.Rules;
+
+public class DuplicateEmptyLineRule : BaseRuleVisitor, IRule
+{
+    private static readonly Regex EmptyLineRegex = new(@"^\s*$", RegexOptions.Compiled);
+
+
+    public override string Text => "Обнаружен дубликат новой строки";
+
+    public override void Visit(TSqlScript node)
+    {
+        var isEmptyLine = false;
+        var fileLines = FixHelpers.GetString(node)
+            .Split('\n')
+            .ToList();
+
+        for (var i = 0; i < fileLines.Count; i++)
+        {
+            if (EmptyLineRegex.IsMatch(fileLines[i]))
+            {
+                if (isEmptyLine)
+                {
+                    AddViolation(Name, Text, i + 1, 1);
+                }
+
+                isEmptyLine = true;
+            }
+            else
+            {
+                isEmptyLine = false;
+            }
+        }
+    }
+
+    public override void FixViolation(List<string> fileLines, IRuleViolation ruleViolation, FileLineActions actions)
+    {
+        if (ruleViolation.Line - 1 == fileLines.Count)
+        {
+            actions.RemoveAt(ruleViolation.Line - 2);
+        }
+        else
+        {
+            actions.RemoveAt(ruleViolation.Line - 1);
+        }
+    }
+}