Treat local function as a method that should go in a class

Author: GrahamTheCoder

CodeConverter/VB/CSToVBConversion.cs

@@ -1,6 +1,7 @@
 using System.Globalization;
 using System.Text;
 using Microsoft.CodeAnalysis.CSharp;
+using Microsoft.CodeAnalysis.CSharp.Syntax;
 using SyntaxKind = Microsoft.CodeAnalysis.CSharp.SyntaxKind;
 
 namespace ICSharpCode.CodeConverter.VB;
@@ -145,7 +146,7 @@ private static string TweakOutputPath(string s)
     public bool CanBeContainedByMethod(SyntaxNode node)
     {
         return node is CSSyntax.IncompleteMemberSyntax ||
-               node is CSSyntax.StatementSyntax ||
+               node is CSSyntax.StatementSyntax and not CSSyntax.LocalFunctionStatementSyntax ||
                node.ContainsSkippedText ||
                node.IsMissing ||
                ParsedAsFieldButCouldBeLocalVariableDeclaration(node);
@@ -154,7 +155,7 @@ node is CSSyntax.StatementSyntax ||
     public bool MustBeContainedByClass(SyntaxNode node)
     {
         return node is CSSyntax.BaseMethodDeclarationSyntax || node is CSSyntax.BaseFieldDeclarationSyntax ||
-               node is CSSyntax.BasePropertyDeclarationSyntax;
+               node is CSSyntax.BasePropertyDeclarationSyntax || node is CSSyntax.LocalFunctionStatementSyntax;
     }
 
     private static bool ParsedAsFieldButCouldBeLocalVariableDeclaration(SyntaxNode node)

Tests/VB/ExpressionTests.cs

@@ -711,7 +711,7 @@ End Module
     public async Task CreateValueTupleTypeAsync()
     {
         await TestConversionCSharpToVisualBasicAsync(@"(double Sum, int Count) t2 = (4.5, 3);",
-            @"Private t2 As (Double, Integer) = (4.5, 3)"
+            @"Dim t2 = (4.5, 3)"
         );
     }