Merge pull request #1168 from retailcoder/CodeExplorer

Resolver performance fix

Author: retailcoder

RetailCoder.VBE/UI/Command/FindAllReferencesCommand.cs

@@ -92,24 +92,32 @@ private SearchResultsViewModel CreateViewModel(Declaration declaration)
         private Declaration FindTarget(object parameter)
         {
             var declaration = parameter as Declaration;
-            if (declaration == null)
+            if (declaration != null)
             {
-                var selection = _vbe.ActiveCodePane.GetSelection();
-                if (!selection.Equals(default(QualifiedSelection)))
-                {
-                    declaration = _state.AllUserDeclarations
-                        .SingleOrDefault(item => item.QualifiedName.QualifiedModuleName == selection.QualifiedName 
-                            && (item.QualifiedSelection.Selection.ContainsFirstCharacter(selection.Selection)
-                                || 
-                                item.References.Any(reference => reference.Selection.ContainsFirstCharacter(selection.Selection))));
-                }
+                return declaration;
+            }
 
-                if (declaration == null)
-                {
-                    return null;
-                }
+            var selection = _vbe.ActiveCodePane.GetSelection();
+            if (!selection.Equals(default(QualifiedSelection)))
+            {
+                declaration = _state.AllDeclarations
+                    .SingleOrDefault(item =>
+                        IsSelectedDeclaration(selection, item) ||
+                        item.References.Any(reference => IsSelectedReference(selection, reference)));
             }
             return declaration;
         }
+
+        private static bool IsSelectedDeclaration(QualifiedSelection selection, Declaration declaration)
+        {
+            return declaration.QualifiedSelection.QualifiedName.Equals(selection.QualifiedName)
+                   && declaration.QualifiedSelection.Selection.ContainsFirstCharacter(selection.Selection);
+        }
+
+        private static bool IsSelectedReference(QualifiedSelection selection, IdentifierReference reference)
+        {
+            return reference.QualifiedModuleName.Equals(selection.QualifiedName)
+                   && reference.Selection.ContainsFirstCharacter(selection.Selection);
+        }
     }
 }