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SQLLinter/Common/BaseRuleVisitor.cs

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+using Microsoft.SqlServer.TransactSql.ScriptDom;
+
+namespace SQLLinter.Common;
+
+public abstract class BaseRuleVisitor : TSqlFragmentVisitor, IRule
+{
+    protected readonly List<Violation> _violations = new();
+
+    public int DynamicSqlStartColumn { get; set; }
+    public int DynamicSqlStartLine { get; set; }
+    public virtual string Name { get => GetDefaultRuleName(GetType().Name); }
+    public abstract string Text { get; }
+    public virtual RuleViolationSeverity Severity { get; set; } = RuleViolationSeverity.Info;
+
+    protected string GetDefaultRuleName(string className) =>
+        className.Substring(className.Length - 4).ToLower() == "rule" ? className.Substring(0, className.Length - 4) : className;
+
+
+    protected virtual int GetLineNumber(TSqlFragment node) => node.StartLine + GetDynamicSqlLineOffset();
+
+    protected virtual int GetLineNumber(TSqlParserToken node) => node.Line + GetDynamicSqlLineOffset();
+
+    private int GetDynamicSqlLineOffset() =>
+        DynamicSqlStartLine > 0
+            ? DynamicSqlStartLine - 1
+            : 0;
+
+    protected virtual int GetColumnNumber(TSqlFragment node) => node.StartColumn + GetDynamicSqlColumnOffset(node);
+
+    protected virtual int GetColumnNumber(TSqlParserToken node) => node.Column + GetDynamicSqlColumnOffset(node);
+
+    protected virtual int GetDynamicSqlColumnOffset(TSqlFragment node) => GetDynamicSqlColumnOffset(node.StartLine);
+
+    protected virtual int GetDynamicSqlColumnOffset(TSqlParserToken node) => GetDynamicSqlColumnOffset(node.Line);
+
+    private int GetDynamicSqlColumnOffset(int line) =>
+        DynamicSqlStartLine > 0 && line == 1
+            ? DynamicSqlStartColumn
+            : 0;
+
+    public virtual void FixViolation(
+        List<string> fileLines, IRuleViolation ruleViolation, FileLineActions actions)
+    {
+    }
+
+    public virtual IEnumerable<Violation> Analyze(TSqlFragment fragment)
+    {
+        _violations.Clear();
+        fragment.Accept(this);
+        return _violations;
+    }
+
+    protected void AddViolation(Violation violation)
+    {
+        _violations.Add(violation);
+    }
+
+    protected void AddViolation(string RuleName, string Message, int Line, int Column)
+    {
+        _violations.Add(new(RuleName, Message, Line, Column));
+    }
+
+    protected void AddViolation(TSqlFragment node, params string[] param)
+    {
+        AddViolation(Name, this.GetText(param), GetLineNumber(node), GetColumnNumber(node));
+    }
+
+    protected string GetText(params string[] param)
+    {
+        return string.Format(this.Text, param);
+    }
+}