add support for renaming local variables and parameters

src/AddIns/Analysis/UnitTesting/Commands/TestableCondition.cs

@@ -41,7 +41,7 @@ namespace ICSharpCode.UnitTesting
 				return testTreeView.SelectedTests;
 			}
 			if (testSolution != null) {
-				IEntity entity = ResolveResultMenuCommand.GetEntity(caller);
+				IEntity entity = ResolveResultMenuCommand.GetSymbol(caller) as IEntity;
 				return testSolution.GetTestsForEntity(entity);
 			}
 			return Enumerable.Empty<ITest>();

src/AddIns/BackendBindings/XamlBinding/XamlBinding/XamlSymbolSearch.cs

@@ -24,7 +24,7 @@ namespace ICSharpCode.XamlBinding
 	public class XamlSymbolSearch : ISymbolSearch
 	{
 		ICompilation compilation;
-		IEntity entity;
+		ISymbol entity;
 		List<FileName> interestingFileNames;
 		int workAmount;
 		double workAmountInverse;
@@ -32,7 +32,8 @@ namespace ICSharpCode.XamlBinding
 		public XamlSymbolSearch(IProject project, ISymbol entity)
 		{
 			compilation = SD.ParserService.GetCompilation(project);
-			this.entity = compilation.Import((IEntity)entity);
+			if (entity is IEntity)
+				this.entity = compilation.Import((IEntity)entity);
 			interestingFileNames = new List<FileName>();
 			if (this.entity == null)
 				return;
@@ -69,7 +70,7 @@ namespace ICSharpCode.XamlBinding
 			);
 		}
 		
-		void FindReferencesInFile(SymbolSearchArgs searchArguments, IEntity entity, FileName fileName, Action<SearchedFile> callback, CancellationToken cancellationToken)
+		void FindReferencesInFile(SymbolSearchArgs searchArguments, ISymbol entity, FileName fileName, Action<SearchedFile> callback, CancellationToken cancellationToken)
 		{
 			ITextSource textSource = searchArguments.ParseableFileContentFinder.Create(fileName);
 			if (textSource == null)

src/AddIns/DisplayBindings/AvalonEdit.AddIn/Src/ContextActions/FindBaseClasses.cs

@@ -20,7 +20,7 @@ namespace ICSharpCode.AvalonEdit.AddIn.ContextActions
 	{
 		public override void Run(ResolveResult symbol)
 		{
-			IEntity entityUnderCaret = GetEntity(symbol);
+			IEntity entityUnderCaret = GetSymbol(symbol) as IEntity;
 			if (entityUnderCaret is ITypeDefinition) {
 				MakePopupWithBaseClasses((ITypeDefinition)entityUnderCaret).OpenAtCaretAndFocus();
 			} else {

src/AddIns/DisplayBindings/AvalonEdit.AddIn/Src/ContextActions/FindDerivedClassesOrOverrides.cs

@@ -20,7 +20,7 @@ namespace ICSharpCode.AvalonEdit.AddIn.ContextActions
 	{
 		public override void Run(ResolveResult symbol)
 		{
-			IEntity entityUnderCaret = GetEntity(symbol);
+			IEntity entityUnderCaret = GetSymbol(symbol) as IEntity;
 			if (entityUnderCaret is ITypeDefinition && !entityUnderCaret.IsSealed) {
 				MakePopupWithDerivedClasses((ITypeDefinition)entityUnderCaret).OpenAtCaretAndFocus();
 				return;

src/AddIns/DisplayBindings/ILSpyAddIn/LaunchILSpy/OpenInILSpyCommand.cs

@@ -3,6 +3,7 @@
 
 using System;
 using ICSharpCode.NRefactory.Semantics;
+using ICSharpCode.NRefactory.TypeSystem;
 using ICSharpCode.SharpDevelop.Editor.Commands;
 
 namespace ICSharpCode.ILSpyAddIn
@@ -15,7 +16,7 @@ namespace ICSharpCode.ILSpyAddIn
 	{
 		public override void Run(ResolveResult symbol)
 		{
-			var entity = GetEntity(symbol);
+			var entity = GetSymbol(symbol) as IEntity;
 			if (entity != null) {
 				ILSpyController.OpenInILSpy(entity);
 			}

src/Main/Base/Project/Src/Editor/Commands/FindReferencesCommand.cs

@@ -4,6 +4,7 @@
 using System;
 using ICSharpCode.Core;
 using ICSharpCode.NRefactory.Semantics;
+using ICSharpCode.NRefactory.TypeSystem;
 using ICSharpCode.SharpDevelop;
 using ICSharpCode.SharpDevelop.Editor.Dialogs;
 using ICSharpCode.SharpDevelop.Gui;
@@ -18,7 +19,7 @@ namespace ICSharpCode.SharpDevelop.Editor.Commands
 	{
 		public override void Run(ResolveResult symbol)
 		{
-			var entity = GetEntity(symbol);
+			var entity = GetSymbol(symbol) as IEntity;
 			if (entity != null) {
 				FindReferencesAndRenameHelper.RunFindReferences(entity);
 				return;
@@ -36,9 +37,9 @@ namespace ICSharpCode.SharpDevelop.Editor.Commands
 	{
 		public override void Run(ResolveResult symbol)
 		{
-			var entity = GetEntity(symbol);
+			var entity = GetSymbol(symbol);
 			if (entity != null) {
-				var project = entity.ParentAssembly.GetProject();
+				var project = GetProjectFromSymbol(entity);
 				if (project != null) {
 					var languageBinding = project.LanguageBinding;
 					
@@ -58,6 +59,35 @@ namespace ICSharpCode.SharpDevelop.Editor.Commands
 			}
 		}
 		
+		ICSharpCode.SharpDevelop.Project.IProject GetProjectFromSymbol(ISymbol symbol)
+		{
+			switch (symbol.SymbolKind) {
+				case SymbolKind.None:
+					return null;
+				case SymbolKind.TypeDefinition:
+				case SymbolKind.Field:
+				case SymbolKind.Property:
+				case SymbolKind.Indexer:
+				case SymbolKind.Event:
+				case SymbolKind.Method:
+				case SymbolKind.Operator:
+				case SymbolKind.Constructor:
+				case SymbolKind.Destructor:
+				case SymbolKind.Accessor:
+					return ((IEntity)symbol).ParentAssembly.GetProject();
+				case SymbolKind.Namespace:
+					return null; // TODO : extend rename on namespaces
+				case SymbolKind.Variable:
+					return SD.ProjectService.FindProjectContainingFile(new FileName(((IVariable)symbol).Region.FileName));
+				case SymbolKind.Parameter:
+					return ((IParameter)symbol).Owner.ParentAssembly.GetProject();
+				case SymbolKind.TypeParameter:
+					return null; // TODO : extend rename on type parameters
+				default:
+					throw new ArgumentOutOfRangeException();
+			}
+		}
+		
 		bool CheckName(string name, ILanguageBinding language)
 		{
 			if (string.IsNullOrEmpty(name))

src/Main/Base/Project/Src/Editor/Commands/GoToDefinition.cs

@@ -31,7 +31,7 @@ namespace ICSharpCode.SharpDevelop.Editor.Commands
 			
 			DomRegion pos = symbol.GetDefinitionRegion();
 			if (string.IsNullOrEmpty(pos.FileName)) {
-				IEntity entity = GetEntity(symbol);
+				IEntity entity = GetSymbol(symbol) as IEntity;
 				if (entity != null) {
 					NavigationService.NavigateTo(entity);
 				}

src/Main/Base/Project/Src/Editor/Commands/SymbolUnderCaretMenuCommand.cs

@@ -52,9 +52,9 @@ namespace ICSharpCode.SharpDevelop.Editor.Commands
 			return GetResolveResult(null, owner);
 		}
 		
-		public static IEntity GetEntity(object owner)
+		public static ISymbol GetSymbol(object owner)
 		{
-			return GetEntity(GetResolveResult(null, owner));
+			return GetSymbol(GetResolveResult(null, owner));
 		}
 		
 		static ResolveResult GetResolveResult(ITextEditor currentEditor, object owner)
@@ -80,7 +80,7 @@ namespace ICSharpCode.SharpDevelop.Editor.Commands
 			return ErrorResolveResult.UnknownError;
 		}
 		
-		protected static IEntity GetEntity(ResolveResult symbol)
+		protected static ISymbol GetSymbol(ResolveResult symbol)
 		{
 			TypeResolveResult trr = symbol as TypeResolveResult;
 			if (trr != null)
@@ -88,6 +88,9 @@ namespace ICSharpCode.SharpDevelop.Editor.Commands
 			MemberResolveResult mrr = symbol as MemberResolveResult;
 			if (mrr != null)
 				return mrr.Member.MemberDefinition;
+			LocalResolveResult lrr = symbol as LocalResolveResult;
+			if (lrr != null)
+				return lrr.Variable;
 			return null;
 		}
 	}

src/Main/SharpDevelop/Dom/ClassBrowser/Commands.cs

@@ -6,6 +6,7 @@ using System.Diagnostics;
 using System.IO;
 using System.Linq;
 using ICSharpCode.NRefactory.Semantics;
+using ICSharpCode.NRefactory.TypeSystem;
 using ICSharpCode.SharpDevelop.Debugging;
 using ICSharpCode.SharpDevelop.Editor.Commands;
 using Microsoft.Win32;
@@ -141,7 +142,7 @@ namespace ICSharpCode.SharpDevelop.Dom.ClassBrowser
 		public override void Run(ResolveResult symbol)
 		{
 			var classBrowser = SD.GetService<IClassBrowser>();
-			var entity = GetEntity(symbol);
+			var entity = GetSymbol(symbol) as IEntity;
 			if ((classBrowser != null) && (entity != null)) {
 				classBrowser.GoToEntity(entity);
 			}