Merge pull request #1124 from TymurGubayev/fix/StaticsWithSameNameInGetAndSet/1

Differentiate between statics in setters and getters

Author: GrahamTheCoder

CodeConverter/CSharp/ExpressionNodeVisitor.cs

@@ -1544,6 +1544,10 @@ public override async Task<CSharpSyntaxNode> VisitIdentifierName(VBasic.Syntax.I
 
         var sym = GetSymbolInfoInDocument<ISymbol>(node);
         if (sym is ILocalSymbol) {
+            if (sym.IsStatic && sym.ContainingSymbol is IMethodSymbol m && m.AssociatedSymbol is IPropertySymbol) {
+                qualifiedIdentifier = qualifiedIdentifier.WithParentPropertyAccessorKind(m.MethodKind);
+            }
+            
             var vbMethodBlock = node.Ancestors().OfType<VBasic.Syntax.MethodBlockBaseSyntax>().FirstOrDefault();
             if (vbMethodBlock != null &&
                 vbMethodBlock.MustReturn() &&

CodeConverter/CSharp/HoistedFieldFromVbStaticVariable.cs

@@ -6,18 +6,21 @@ internal class HoistedFieldFromVbStaticVariable : IHoistedNode
 {
     public string OriginalMethodName { get; }
     public string OriginalVariableName { get; }
+    public MethodKind OriginalParentAccessorKind { get; }
     public ExpressionSyntax Initializer { get; }
     public TypeSyntax Type { get; }
     public bool IsStatic { get; }
 
-    public HoistedFieldFromVbStaticVariable(string originalMethodName, string originalVariableName, ExpressionSyntax initializer, TypeSyntax type, bool isStatic)
+    public HoistedFieldFromVbStaticVariable(string originalMethodName, string originalVariableName, MethodKind originalParentAccessorKind, ExpressionSyntax initializer, TypeSyntax type, bool isStatic)
     {
         OriginalMethodName = originalMethodName;
         OriginalVariableName = originalVariableName;
+        OriginalParentAccessorKind = originalParentAccessorKind;
         Initializer = initializer;
         Type = type;
         IsStatic = isStatic;
     }
 
     public string FieldName => OriginalMethodName != null ? $"_{OriginalMethodName}_{OriginalVariableName}" : $"_{OriginalVariableName}";
+    public string PrefixedOriginalVariableName => PerScopeState.GetPrefixedName(OriginalParentAccessorKind == MethodKind.Ordinary ? "" : OriginalParentAccessorKind.ToString(), OriginalVariableName);
 }

CodeConverter/CSharp/MethodBodyExecutableStatementVisitor.cs

@@ -110,6 +110,7 @@ public override async Task<SyntaxList<StatementSyntax>> VisitLocalDeclarationSta
                     string methodName;
                     SyntaxTokenList methodModifiers;
 
+                    MethodKind parentAccessorKind = MethodKind.Ordinary;
                     if (_methodNode is VBSyntax.MethodBlockSyntax methodBlock) {
                         var methodStatement = methodBlock.BlockStatement as VBSyntax.MethodStatementSyntax;
                         methodModifiers = methodStatement.Modifiers;
@@ -120,13 +121,14 @@ public override async Task<SyntaxList<StatementSyntax>> VisitLocalDeclarationSta
                     } else if (_methodNode is VBSyntax.AccessorBlockSyntax accessorBlock) {
                         var propertyBlock = accessorBlock.Parent as VBSyntax.PropertyBlockSyntax;
                         methodName = propertyBlock.PropertyStatement.Identifier.Text;
+                        parentAccessorKind = accessorBlock.IsKind(VBasic.SyntaxKind.GetAccessorBlock) ? MethodKind.PropertyGet : MethodKind.PropertySet;
                         methodModifiers = propertyBlock.PropertyStatement.Modifiers;
                     } else {
                         throw new NotImplementedException(_methodNode.GetType() + " not implemented!");
                     }
 
                     var isVbShared = methodModifiers.Any(a => a.IsKind(VBasic.SyntaxKind.SharedKeyword));
-                    _perScopeState.HoistToTopLevel(new HoistedFieldFromVbStaticVariable(methodName, variable.Identifier.Text, initializeValue, decl.Declaration.Type, isVbShared));
+                    _perScopeState.HoistToTopLevel(new HoistedFieldFromVbStaticVariable(methodName, variable.Identifier.Text, parentAccessorKind, initializeValue, decl.Declaration.Type, isVbShared));
                 }
             } else {
                 var shouldPullVariablesBeforeLoop = _perScopeState.IsInsideLoop() && declarator.Initializer is null && declarator.AsClause is not VBSyntax.AsNewClauseSyntax;

CodeConverter/CSharp/PerScopeState.cs

@@ -157,18 +157,22 @@ public async Task<SyntaxList<MemberDeclarationSyntax>> CreateVbStaticFieldsAsync
         var declarations = new List<FieldDeclarationSyntax>();
 
         var fieldInfo = GetFields();
-        var newNames = fieldInfo.ToDictionary(f => f.OriginalVariableName, f =>
+        var newNames = fieldInfo.ToDictionary(f => f.PrefixedOriginalVariableName, f =>
             NameGenerator.CS.GetUniqueVariableNameInScope(semanticModel, generatedNames, typeNode, f.FieldName)
         );
         foreach (var field in fieldInfo) {
             var decl = (field.Initializer != null) 
-                ? CommonConversions.CreateVariableDeclarationAndAssignment(newNames[field.OriginalVariableName], field.Initializer, field.Type)
-                : SyntaxFactory.VariableDeclaration(field.Type, SyntaxFactory.SingletonSeparatedList(SyntaxFactory.VariableDeclarator(newNames[field.OriginalVariableName])));
+                ? CommonConversions.CreateVariableDeclarationAndAssignment(newNames[field.PrefixedOriginalVariableName], field.Initializer, field.Type)
+                : SyntaxFactory.VariableDeclaration(field.Type, SyntaxFactory.SingletonSeparatedList(SyntaxFactory.VariableDeclarator(newNames[field.PrefixedOriginalVariableName])));
             var modifiers = new List<SyntaxToken> { CS.SyntaxFactory.Token(SyntaxKind.PrivateKeyword) };
             if (field.IsStatic || namedTypeSymbol.IsModuleType()) {
                 modifiers.Add(CS.SyntaxFactory.Token(SyntaxKind.StaticKeyword));
             }
-            declarations.Add(CS.SyntaxFactory.FieldDeclaration(CS.SyntaxFactory.List<AttributeListSyntax>(), CS.SyntaxFactory.TokenList(modifiers), decl));
+            var fieldDecl = CS.SyntaxFactory.FieldDeclaration(CS.SyntaxFactory.List<AttributeListSyntax>(), CS.SyntaxFactory.TokenList(modifiers), decl);
+            if (field.OriginalParentAccessorKind != MethodKind.Ordinary) {
+                fieldDecl = fieldDecl.WithParentPropertyAccessorKind(field.OriginalParentAccessorKind);
+            }
+            declarations.Add(fieldDecl);
         }
 
         var statementsWithUpdatedIds = ReplaceNames(declarations.Concat(csNodes), newNames);
@@ -185,11 +189,23 @@ public static IEnumerable<T> ReplaceNames<T>(IEnumerable<T> csNodes, Dictionary<
     public static T ReplaceNames<T>(T csNode, Dictionary<string, string> newNames) where T : SyntaxNode
     {
         return csNode.ReplaceNodes(csNode.DescendantNodesAndSelf().OfType<IdentifierNameSyntax>(), (_, idns) => {
-            if (newNames.TryGetValue(idns.Identifier.ValueText, out var newName)) {
+            if (TryGetValue(newNames, idns, out var newName)) {
                 return idns.WithoutAnnotations(AdditionalLocalAnnotation).WithIdentifier(CS.SyntaxFactory.Identifier(newName));
             }
             return idns;
         });
+
+        static bool TryGetValue(Dictionary<string, string> newNames, IdentifierNameSyntax idns, out string newName)
+        {
+            var ann = idns.GetAnnotations(AnnotationConstants.ParentPropertyAccessorKindAnnotation).FirstOrDefault();
+            var key = GetPrefixedName(ann?.Data, idns.Identifier.ValueText);
+            return newNames.TryGetValue(key, out newName);
+        }
+    }
+
+    internal static string GetPrefixedName(string prefix, string name)
+    {
+        return string.IsNullOrEmpty(prefix) ? name : $"<{prefix}>.{name}";
     }
 
     public IEnumerable<StatementSyntax> ConvertExit(VBasic.SyntaxKind vbBlockKeywordKind)

CodeConverter/Common/AnnotationConstants.cs

@@ -12,6 +12,7 @@ internal static class AnnotationConstants
     public const string SourceEndLineAnnotationKind = "CodeConverter.SourceEndLine";
     public const string LeadingTriviaAlreadyMappedAnnotation = nameof(CodeConverter) + "." + nameof(LeadingTriviaAlreadyMappedAnnotation);
     public const string TrailingTriviaAlreadyMappedAnnotation = nameof(CodeConverter) + "." + nameof(TrailingTriviaAlreadyMappedAnnotation);
+    public const string ParentPropertyAccessorKindAnnotation = nameof(CodeConverter) + "." + nameof(ParentPropertyAccessorKindAnnotation);
 
     private static string AsString(LinePosition position)
     {
@@ -40,4 +41,9 @@ public static SyntaxAnnotation SourceEndLine(FileLinePositionSpan origLinespan)
     {
         return new SyntaxAnnotation(SourceEndLineAnnotationKind, origLinespan.EndLinePosition.Line.ToString(CultureInfo.InvariantCulture));
     }
+
+    public static SyntaxAnnotation ParentPropertyAccessorKind(string accessorKind)
+    {
+        return new SyntaxAnnotation(ParentPropertyAccessorKindAnnotation, accessorKind);
+    }
 }

CodeConverter/Util/SyntaxNodeExtensions.cs

@@ -173,6 +173,11 @@ private static T WithoutSourceMappingNonRecursive<T>(this T node) where T : Synt
         return node.WithoutAnnotations(AnnotationConstants.SourceStartLineAnnotationKind).WithoutAnnotations(AnnotationConstants.SourceEndLineAnnotationKind);
     }
 
+    public static T WithParentPropertyAccessorKind<T>(this T node, MethodKind accessorKind) where T : SyntaxNode
+    {
+        return node.WithAdditionalAnnotations(AnnotationConstants.ParentPropertyAccessorKind(accessorKind.ToString()));
+    }
+
     private static bool IsBlockParent(SyntaxNode converted, SyntaxToken lastCsConvertedToken)
     {
         return lastCsConvertedToken.Parent == converted || lastCsConvertedToken.Parent is BlockSyntax b && b.Parent == converted;

Tests/CSharp/MemberTests/MemberTests.cs

@@ -665,6 +665,45 @@ public void set_Prop(int i, string value)
         _Prop_bSet = false;
     }
 
+}");
+    }
+
+    [Fact]
+    public async Task StaticLocalsInPropertyGetterAndSetterAsync()
+    {
+        await TestConversionVisualBasicToCSharpAsync(
+            @"
+Public Property Prop As String
+    Get
+        Static b As Boolean
+        b = True
+    End Get
+
+    Set(ByVal s As String)
+        Static b As Boolean
+        b = False
+    End Set
+End Property
+", @"
+internal partial class SurroundingClass
+{
+    private bool _Prop_b;
+    private bool _Prop_b1;
+
+    public string Prop
+    {
+        get
+        {
+            _Prop_b = true;
+            return default;
+        }
+
+        set
+        {
+            _Prop_b1 = false;
+        }
+    }
+
 }");
     }