[RegexToolkit] Add regex validation utility code action.

4 files changed, 154 insertions, 4 deletions

diff --git a/main/src/addins/MonoDevelop.RegexToolkit/MonoDevelop.RegexToolkit.csproj b/main/src/addins/MonoDevelop.RegexToolkit/MonoDevelop.RegexToolkit.csproj
index 785be8556a..1338983d0f 100644
--- a/main/src/addins/MonoDevelop.RegexToolkit/MonoDevelop.RegexToolkit.csproj
+++ b/main/src/addins/MonoDevelop.RegexToolkit/MonoDevelop.RegexToolkit.csproj
@@ -62,6 +62,25 @@
     <Reference Include="pango-sharp, Version=2.12.0.0, Culture=neutral, PublicKeyToken=35e10195dab3c99f">
       <SpecificVersion>False</SpecificVersion>
     </Reference>
+    <Reference Include="Microsoft.CodeAnalysis.CSharp">
+      <HintPath>..\..\..\external\roslyn\Binaries\Release\Microsoft.CodeAnalysis.CSharp.dll</HintPath>
+      <Private>False</Private>
+    </Reference>
+    <Reference Include="Microsoft.CodeAnalysis.CSharp.Workspaces">
+      <HintPath>..\..\..\external\roslyn\Binaries\Release\Microsoft.CodeAnalysis.CSharp.Workspaces.dll</HintPath>
+      <Private>False</Private>
+    </Reference>
+    <Reference Include="Microsoft.CodeAnalysis">
+      <HintPath>..\..\..\build\bin\Microsoft.CodeAnalysis.dll</HintPath>
+      <Private>False</Private>
+    </Reference>
+    <Reference Include="Microsoft.CodeAnalysis.Workspaces">
+      <HintPath>..\..\..\external\roslyn\Binaries\Release\Microsoft.CodeAnalysis.Workspaces.dll</HintPath>
+      <Private>False</Private>
+    </Reference>
+    <Reference Include="System.Composition.AttributedModel">
+      <HintPath>..\..\..\external\roslyn\Binaries\Release\System.Composition.AttributedModel.dll</HintPath>
+    </Reference>
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\core\MonoDevelop.Core\MonoDevelop.Core.csproj">
@@ -94,6 +113,7 @@
     <Compile Include="MonoDevelop.RegexToolkit\ElementHelpWidget.cs" />
     <Compile Include="gtk-gui\MonoDevelop.RegexToolkit.ElementHelpWidget.cs" />
     <Compile Include="AddinInfo.cs" />
+    <Compile Include="MonoDevelop.RegexToolkit\ValidateActionCodeRefactoringProvider.cs" />
   </ItemGroup>
   <ItemGroup>
     <EmbeddedResource Include="gtk-gui\gui.stetic">
diff --git a/main/src/addins/MonoDevelop.RegexToolkit/MonoDevelop.RegexToolkit/Commands.cs b/main/src/addins/MonoDevelop.RegexToolkit/MonoDevelop.RegexToolkit/Commands.cs
index 482dbcaded..9de1aa2131 100644
--- a/main/src/addins/MonoDevelop.RegexToolkit/MonoDevelop.RegexToolkit/Commands.cs
+++ b/main/src/addins/MonoDevelop.RegexToolkit/MonoDevelop.RegexToolkit/Commands.cs
@@ -91,18 +91,24 @@ namespace MonoDevelop.RegexToolkit
 	{
 		protected override void Run ()
 		{
+			RunRegexWindow ();
+		}
+
+		public static RegexToolkitWidget RunRegexWindow ()
+		{

 			foreach (var document in IdeApp.Workbench.Documents) {
 				if (document.Window.ViewContent.Control is RegexToolkitWidget) {
 					document.Window.SelectWindow ();
-					return;
+					return (RegexToolkitWidget)document.Window.ViewContent.Control;
 				}
 			}
 			var regexToolkit = new RegexToolkitWidget ();
 			var newDocument = IdeApp.Workbench.OpenDocument (new ViewOnlyContent (regexToolkit, GettextCatalog.GetString ("Regex Toolkit")), true);
-			
+
 			var elementHelp = new ElementHelpWidget (newDocument.Window, regexToolkit);
-			
+
 			newDocument.Window.AttachViewContent (new DefaultAttachableViewContent (elementHelp, GettextCatalog.GetString ("Elements")));
+			return regexToolkit;
 		}
 	}
 	
diff --git a/main/src/addins/MonoDevelop.RegexToolkit/MonoDevelop.RegexToolkit/RegexToolkitWidget.cs b/main/src/addins/MonoDevelop.RegexToolkit/MonoDevelop.RegexToolkit/RegexToolkitWidget.cs
index ecd1defcba..475f81888b 100644
--- a/main/src/addins/MonoDevelop.RegexToolkit/MonoDevelop.RegexToolkit/RegexToolkitWidget.cs
+++ b/main/src/addins/MonoDevelop.RegexToolkit/MonoDevelop.RegexToolkit/RegexToolkitWidget.cs
@@ -42,7 +42,14 @@ namespace MonoDevelop.RegexToolkit
 		TreeStore resultStore;
 		
 		Thread regexThread;
-		
+		public string Regex { 
+			get {
+				return entryRegEx.Text;
+			}
+			set {
+				entryRegEx.Text = value;
+			}
+		}
 		public RegexToolkitWidget ()
 		{
 			this.Build ();
diff --git a/main/src/addins/MonoDevelop.RegexToolkit/MonoDevelop.RegexToolkit/ValidateActionCodeRefactoringProvider.cs b/main/src/addins/MonoDevelop.RegexToolkit/MonoDevelop.RegexToolkit/ValidateActionCodeRefactoringProvider.cs
new file mode 100644
index 0000000000..347febabf8
--- /dev/null
+++ b/main/src/addins/MonoDevelop.RegexToolkit/MonoDevelop.RegexToolkit/ValidateActionCodeRefactoringProvider.cs
@@ -0,0 +1,117 @@
+//
+// ValidateActionCodeRefactoringProvider.cs
+//
+// Author:
+//       Mike Krüger <mkrueger@xamarin.com>
+//
+// Copyright (c) 2015 Xamarin Inc. (http://xamarin.com)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+using System;
+using System.Threading;
+using System.Collections.Generic;
+using Microsoft.CodeAnalysis.CodeRefactorings;
+using Microsoft.CodeAnalysis;
+using System.Threading.Tasks;
+using Microsoft.CodeAnalysis.CodeActions;
+using Microsoft.CodeAnalysis.Text;
+using Microsoft.CodeAnalysis.CSharp.Syntax;
+using Microsoft.CodeAnalysis.CSharp;
+using Microsoft.CodeAnalysis.Formatting;
+using MonoDevelop.Core;
+using MonoDevelop.RegexToolkit;
+
+namespace RefactoringEssentials.CSharp.CodeRefactorings
+{
+	[ExportCodeRefactoringProvider(LanguageNames.CSharp, Name = "Validate regular expression")]
+	public class ValidateActionCodeRefactoringProvider : CodeRefactoringProvider
+	{
+		public sealed override async Task ComputeRefactoringsAsync(CodeRefactoringContext context)
+		{
+			var document = context.Document;
+			if (document.Project.Solution.Workspace.Kind == WorkspaceKind.MiscellaneousFiles)
+				return;
+			var span = context.Span;
+			if (!span.IsEmpty)
+				return;
+			var cancellationToken = context.CancellationToken;
+			if (cancellationToken.IsCancellationRequested)
+				return;
+
+			var model = await document.GetSemanticModelAsync(cancellationToken).ConfigureAwait(false);
+			//if (model.IsFromGeneratedCode(cancellationToken))
+			//	return;
+			var root = await model.SyntaxTree.GetRootAsync(cancellationToken).ConfigureAwait(false);
+			if (!root.Span.Contains (span))
+				return;
+			var node = root.FindNode(span, false, true);
+			if (!node.IsKind(SyntaxKind.StringLiteralExpression))
+				return;
+			var argument = node.Parent as ArgumentSyntax;
+			if (argument == null)
+				return;
+			var list = argument.Parent as ArgumentListSyntax;
+
+			var invocation = argument.Parent?.Parent as InvocationExpressionSyntax;
+			if (invocation != null) {
+				var info = model.GetSymbolInfo (invocation);
+				if (!IsRegexMatchMethod (info) || list.Arguments [1] != argument)
+					return;
+			}
+
+			var oce = argument.Parent?.Parent as ObjectCreationExpressionSyntax;
+			if (oce != null) {
+				var info = model.GetSymbolInfo (oce);
+				if (!IsRegexType (info.Symbol.ContainingType) || list.Arguments [0] != argument)
+					return;
+			}
+			 
+			var regex = model.GetConstantValue (node);
+			if (!regex.HasValue)
+				return;
+			
+			context.RegisterRefactoring (CodeAction.Create(
+				GettextCatalog.GetString("Validate regular expression"),
+				t2 => {
+					ShowRegexToolkitHandler.RunRegexWindow ().Regex = regex.Value.ToString ();
+					return Task.FromResult(document);
+				}
+			));
+		}
+
+		internal static bool IsRegexMatchMethod (SymbolInfo symbolInfo)
+		{
+			var symbol = symbolInfo.Symbol;
+			if (symbol == null)
+				return false;
+			return IsRegexType (symbol.ContainingType) && symbol.IsStatic && (symbol.Name == "IsMatch" || symbol.Name == "Match" || symbol.Name == "Matches");
+		}
+
+		internal static bool IsRegexConstructor (SymbolInfo symbolInfo)
+		{
+			return symbolInfo.Symbol?.ContainingType is INamedTypeSymbol && IsRegexType (symbolInfo.Symbol.ContainingType);
+		}
+
+		internal static bool IsRegexType (INamedTypeSymbol containingType)
+		{
+			return containingType != null && containingType.Name == "Regex" && containingType.ContainingNamespace.ToDisplayString () == "System.Text.RegularExpressions";
+		}
+	}
+}