Fix statement separator handling in MoveCloserToUsageRefactoring. Closes #2753

RetailCoder.VBE/Refactorings/MoveCloserToUsage/MoveCloserToUsageRefactoring.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Text.RegularExpressions;
 using System.Windows.Forms;
 using Rubberduck.Common;
 using Rubberduck.Parsing;
@@ -170,7 +171,8 @@ private void InsertDeclaration()
 
                 var newLinesWithoutStringLiterals = newLines.StripStringLiterals();
 
-                var lastIndexOfColon = newLinesWithoutStringLiterals.LastIndexOf(':');
+                var lastIndexOfColon = GetIndexOfLastStatementSeparator(newLinesWithoutStringLiterals);
+                // ReSharper disable once StringLastIndexOfIsCultureSpecific.1
                 while (lastIndexOfColon != -1)
                 {
                     var numberOfCharsToRemove = lastIndexOfColon == newLines.Length - 1 || newLines[lastIndexOfColon + 1] != ' '
@@ -185,14 +187,21 @@ private void InsertDeclaration()
                             .Remove(lastIndexOfColon, numberOfCharsToRemove)
                             .Insert(lastIndexOfColon, Environment.NewLine);
 
-                    lastIndexOfColon = newLinesWithoutStringLiterals.LastIndexOf(':');
+                    lastIndexOfColon = GetIndexOfLastStatementSeparator(newLinesWithoutStringLiterals);
                 }
 
                 module.DeleteLines(beginningOfInstructionSelection.StartLine, beginningOfInstructionSelection.LineCount);
                 module.InsertLines(beginningOfInstructionSelection.StartLine, newLines);
             }
         }
 
+        private static readonly Regex StatementSeparatorRegex = new Regex(":[^=]", RegexOptions.RightToLeft);
+        private static int GetIndexOfLastStatementSeparator(string input)
+        {
+            var matches = StatementSeparatorRegex.Matches(input);
+            return matches.Count == 0 ? -1 : matches[0].Index;
+        }
+
         private Selection GetBeginningOfInstructionSelection(IdentifierReference reference)
         {
             var referenceSelection = reference.Selection;
@@ -201,7 +210,7 @@ private Selection GetBeginningOfInstructionSelection(IdentifierReference referen
                 var currentLine = referenceSelection.StartLine;
 
                 var codeLine = module.GetLines(currentLine, 1).StripStringLiterals();
-                while (codeLine.Remove(referenceSelection.StartColumn).LastIndexOf(':') == -1)
+                while (GetIndexOfLastStatementSeparator(codeLine.Remove(referenceSelection.StartColumn)) == -1)
                 {
                     codeLine = module.GetLines(--currentLine, 1).StripStringLiterals();
                     if (!codeLine.EndsWith(" _"))
@@ -210,7 +219,7 @@ private Selection GetBeginningOfInstructionSelection(IdentifierReference referen
                     }
                 }
 
-                var index = codeLine.Remove(referenceSelection.StartColumn).LastIndexOf(':') + 1;
+                var index = GetIndexOfLastStatementSeparator(codeLine.Remove(referenceSelection.StartColumn)) + 1;
                 return new Selection(currentLine, index, currentLine, index);
             }
         }

RetailCoder.VBE/UI/SelectionChangeService.cs

@@ -81,8 +81,7 @@ private void DispatchSelectionChanged(DeclarationChangedEventArgs eventArgs)
             }
             SelectionChanged.Invoke(null, eventArgs);
         }
-
-
+
         private void DispatchSelectedDeclaration(DeclarationChangedEventArgs eventArgs)
         {
             DispatchSelectionChanged(eventArgs);
@@ -111,7 +110,7 @@ private void DispatchSelectedDesignerDeclaration(IVBComponent component)
             {
                 var name = component.SelectedControls.First().Name;
                 var control =
-                    _parser.State.AllUserDeclarations.SingleOrDefault(decl =>
+                    _parser.State.DeclarationFinder.UserDeclarations(DeclarationType.Control).SingleOrDefault(decl =>
                             decl.IdentifierName.Equals(name) &&
                             decl.ParentDeclaration.IdentifierName.Equals(component.Name) &&
                             decl.ProjectId.Equals(component.ParentProject.ProjectId));
@@ -120,7 +119,7 @@ private void DispatchSelectedDesignerDeclaration(IVBComponent component)
                 return;
             }
             var form =
-                _parser.State.AllUserDeclarations.SingleOrDefault(decl =>
+                _parser.State.DeclarationFinder.UserDeclarations(DeclarationType.UserForm).SingleOrDefault(decl =>
                     decl.IdentifierName.Equals(component.Name) &&
                     decl.ProjectId.Equals(component.ParentProject.ProjectId));
 
@@ -144,7 +143,7 @@ private void DispatchSelectedProjectNodeDeclaration(IVBComponent component)
             }
             else if (component != null)
             {
-                //The user might have selected the project node in Project Explorer. If they've chosen a folder, we'll return the project anyway.
+
                 var module =
                     _parser.State.AllUserDeclarations.SingleOrDefault(
                         decl => decl.DeclarationType.HasFlag(DeclarationType.Module) &&

Rubberduck.VBEEditor/WindowsApi/CodePaneSubclass.cs

@@ -19,7 +19,7 @@ internal CodePaneSubclass(IntPtr hwnd, ICodePane pane) : base(hwnd)
         protected override void DispatchFocusEvent(FocusType type)
         {
             var window = VBENativeServices.GetWindowInfoFromHwnd(Hwnd);
-            if (window == null)
+            if (!window.HasValue)
             {
                 return;
             }

Rubberduck.VBEEditor/WindowsApi/FocusSource.cs

@@ -1,6 +1,7 @@
 using System;
 using Rubberduck.Common.WinAPI;
 using Rubberduck.VBEditor.Events;
+using Rubberduck.VBEditor.SafeComWrappers.MSForms;
 
 namespace Rubberduck.VBEditor.WindowsApi
 {
@@ -20,7 +21,7 @@ protected void OnFocusChange(WindowChangedEventArgs eventArgs)
         protected virtual void DispatchFocusEvent(FocusType type)
         {
             var window = VBENativeServices.GetWindowInfoFromHwnd(Hwnd);
-            if (window == null)
+            if (!window.HasValue)
             {
                 return;
             }

RubberduckTests/Refactoring/MoveCloserToUsageTests.cs

@@ -849,6 +849,106 @@ End Sub
             Assert.AreEqual(expectedCode, module.Content());
         }
 
+        [TestMethod]
+        public void MoveCloserToUsageRefactoring_WorksWithNamedParameters()
+        {
+            //Input
+            const string inputCode =
+@"Private foo As Long
+
+Public Sub Test()
+    SomeSub someParam:=foo
+End Sub
+
+Public Sub SomeSub(ByVal someParam As Long)
+    Debug.Print someParam
+End Sub";
+
+            var selection = new Selection(1, 1, 1, 1);
+            const string expectedCode =
+@"
+Public Sub Test()
+
+    Dim foo As Long
+    SomeSub someParam:=foo
+End Sub
+
+Public Sub SomeSub(ByVal someParam As Long)
+    Debug.Print someParam
+End Sub";
+
+            //Arrange
+            var builder = new MockVbeBuilder();
+            IVBComponent component;
+            var vbe = builder.BuildFromSingleStandardModule(inputCode, out component, selection);
+            var project = vbe.Object.VBProjects[0];
+            var module = project.VBComponents[0].CodeModule;
+            var mockHost = new Mock<IHostApplication>();
+            mockHost.SetupAllProperties();
+            var parser = MockParser.Create(vbe.Object, new RubberduckParserState(vbe.Object));
+
+            parser.Parse(new CancellationTokenSource());
+            if (parser.State.Status >= ParserState.Error) { Assert.Inconclusive("Parser Error"); }
+
+            var qualifiedSelection = new QualifiedSelection(new QualifiedModuleName(component), selection);
+
+            //Act
+            var refactoring = new MoveCloserToUsageRefactoring(vbe.Object, parser.State, null);
+            refactoring.Refactor(qualifiedSelection);
+
+            //Assert
+            Assert.AreEqual(expectedCode, module.Content());
+        }
+
+        [TestMethod]
+        public void MoveCloserToUsageRefactoring_WorksWithNamedParametersAndStatementSeparaters()
+        {
+            //Input
+            const string inputCode =
+@"Private foo As Long
+
+Public Sub Test(): SomeSub someParam:=foo: End Sub
+
+Public Sub SomeSub(ByVal someParam As Long)
+    Debug.Print someParam
+End Sub";
+
+            var selection = new Selection(1, 1, 1, 1);
+            const string expectedCode =
+@"
+Public Sub Test()
+    Dim foo As Long
+
+SomeSub someParam:=foo
+End Sub
+
+Public Sub SomeSub(ByVal someParam As Long)
+    Debug.Print someParam
+End Sub";
+
+            //Arrange
+            var builder = new MockVbeBuilder();
+            IVBComponent component;
+            var vbe = builder.BuildFromSingleStandardModule(inputCode, out component, selection);
+            var project = vbe.Object.VBProjects[0];
+            var module = project.VBComponents[0].CodeModule;
+            var mockHost = new Mock<IHostApplication>();
+            mockHost.SetupAllProperties();
+            var parser = MockParser.Create(vbe.Object, new RubberduckParserState(vbe.Object));
+
+            parser.Parse(new CancellationTokenSource());
+            if (parser.State.Status >= ParserState.Error) { Assert.Inconclusive("Parser Error"); }
+
+            var qualifiedSelection = new QualifiedSelection(new QualifiedModuleName(component), selection);
+
+            //Act
+            var refactoring = new MoveCloserToUsageRefactoring(vbe.Object, parser.State, null);
+            refactoring.Refactor(qualifiedSelection);
+
+            //Assert
+            Assert.AreEqual(expectedCode, module.Content());
+        }
+
         [TestMethod]
         public void IntroduceFieldRefactoring_PassInTarget_Nonvariable()
         {