adding an enum walker for #1492

Src/SyntaxFinder/Walkers/EnumWalker.cs

@@ -0,0 +1,57 @@
+using System.Collections.Concurrent;
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.CSharp;
+using Microsoft.CodeAnalysis.CSharp.Syntax;
+
+namespace SyntaxFinder.Walkers;
+
+public class EnumWalker(string file) : SyntaxFinderWalker(file)
+{
+    public static readonly ConcurrentDictionary<string, List<string>> MembersInType = new();
+    public static int Total;
+    public static int Matching;
+
+    public override void VisitEnumMemberDeclaration(EnumMemberDeclarationSyntax node)
+    {
+        this.VisitType(node);
+        base.VisitEnumMemberDeclaration(node);
+    }
+
+    private void VisitType(EnumMemberDeclarationSyntax node)
+    {
+        if (!node.AttributeLists.Any() || node.AttributeLists.Span.Length > 8)
+        {
+            return;
+        }
+
+        Interlocked.Increment(ref Total);
+        if (
+            node.SyntaxTree.GetLineSpan(node.AttributeLists.First().Span).StartLinePosition.Line
+            == node.SyntaxTree.GetLineSpan(node.Identifier.Span).StartLinePosition.Line
+        )
+        {
+            Interlocked.Increment(ref Matching);
+            this.WriteCode(node);
+        }
+    }
+
+    private static bool IsMultiline(SyntaxNode syntaxNode)
+    {
+        var lineSpan = syntaxNode.SyntaxTree.GetLineSpan(syntaxNode.Span);
+        return lineSpan.StartLinePosition.Line != lineSpan.EndLinePosition.Line;
+    }
+
+    public static void WriteResult()
+    {
+        foreach (var entry in MembersInType)
+        {
+            Console.WriteLine(entry.Key);
+            foreach (var member in entry.Value.OrderBy(o => o))
+            {
+                Console.WriteLine("    " + member);
+            }
+        }
+
+        ResultWriter.WriteMatching(Total, Matching);
+    }
+}