[xharness] Add support for generating a tvOS version of .NET iOS projects.

tests/xharness/Harness.cs

@@ -389,7 +389,7 @@ void AutoConfigureIOS ()
 				IOSTestProjects.Add (new iOSTestProject (Path.GetFullPath (Path.Combine (RootDirectory, p + "/" + p + ".fsproj")), false) { Name = p });
 
 			IOSTestProjects.Add (new iOSTestProject (Path.GetFullPath (Path.Combine (RootDirectory, "introspection", "iOS", "introspection-ios.csproj"))) { Name = "introspection" });
-			IOSTestProjects.Add (new iOSTestProject (Path.GetFullPath (Path.Combine (RootDirectory, "introspection", "iOS", "introspection-ios-dotnet.csproj"))) { Name = "introspection", IsDotNetProject = true, SkipiOSVariation = false, SkiptvOSVariation = true, SkipwatchOSVariation = true, SkipTodayExtensionVariation = true, SkipDeviceVariations = true, SkipiOS32Variation = true, });
+			IOSTestProjects.Add (new iOSTestProject (Path.GetFullPath (Path.Combine (RootDirectory, "introspection", "iOS", "introspection-ios-dotnet.csproj"))) { Name = "introspection", IsDotNetProject = true, SkipiOSVariation = false, SkiptvOSVariation = false, SkipwatchOSVariation = true, SkipTodayExtensionVariation = true, SkipDeviceVariations = true, SkipiOS32Variation = true, });
 			IOSTestProjects.Add (new iOSTestProject (Path.GetFullPath (Path.Combine (RootDirectory, "linker", "ios", "dont link", "dont link.csproj"))) { Configurations = new string [] { "Debug", "Release" } });
 			IOSTestProjects.Add (new iOSTestProject (Path.GetFullPath (Path.Combine (RootDirectory, "linker", "ios", "link all", "link all.csproj"))) { Configurations = new string [] { "Debug", "Release" } });
 			IOSTestProjects.Add (new iOSTestProject (Path.GetFullPath (Path.Combine (RootDirectory, "linker", "ios", "link sdk", "link sdk.csproj"))) { Configurations = new string [] { "Debug", "Release" } });

tests/xharness/Microsoft.DotNet.XHarness.iOS.Shared/Hardware/IDevice.cs

@@ -19,6 +19,24 @@ public enum DevicePlatform {
 		macOS,
 	}
 
+	public static class DevicePlatform_Extensions {
+		public static string AsString (this DevicePlatform value)
+		{
+			switch (value) {
+			case DevicePlatform.iOS:
+				return "iOS";
+			case DevicePlatform.tvOS:
+				return "tvOS";
+			case DevicePlatform.watchOS:
+				return "watchOS";
+			case DevicePlatform.macOS:
+				return "macOS";
+			default:
+				throw new System.Exception ($"Unknown platform: {value}");
+			}
+		}
+	}
+
 	public interface IDevice {
 		string Name { get; }
 		string UDID { get; }

tests/xharness/Microsoft.DotNet.XHarness.iOS.Shared/Utilities/ProjectFileExtensions.cs

@@ -151,11 +151,14 @@ public static string GetOutputPath (this XmlDocument csproj, string platform, st
 			return GetElementValue (csproj, platform, configuration, "OutputPath");
 		}
 
-		static string GetElementValue (this XmlDocument csproj, string platform, string configuration, string elementName)
+		static string GetElementValue (this XmlDocument csproj, string platform, string configuration, string elementName, bool throwIfNotFound = true)
 		{
 			var nodes = csproj.SelectNodes ($"/*/*/*[local-name() = '{elementName}']");
-			if (nodes.Count == 0)
-				throw new Exception ($"Could not find node {elementName}");
+			if (nodes.Count == 0) {
+				if (throwIfNotFound)
+					throw new Exception ($"Could not find node {elementName}");
+				return null;
+			}
 			foreach (XmlNode n in nodes) {
 				if (IsNodeApplicable (n, platform, configuration))
 					return n.InnerText.Replace ("$(Platform)", platform).Replace ("$(Configuration)", configuration);
@@ -182,6 +185,11 @@ public static string GetOutputAssemblyPath (this XmlDocument csproj, string plat
 			return outputPath + "\\" + assemblyName + "." + extension; // MSBuild-style paths.
 		}
 
+		public static string GetIsBindingProject (this XmlDocument csproj)
+		{
+			return GetElementValue (csproj, string.Empty, string.Empty, "IsBindingProject", throwIfNotFound: false);
+		}
+
 		public static void SetIntermediateOutputPath (this XmlDocument csproj, string value)
 		{
 			// Set any existing IntermediateOutputPath
@@ -433,19 +441,21 @@ public static string GetImport (this XmlDocument csproj)
 		}
 
 		public delegate bool FixReferenceDelegate (string reference, out string fixed_reference);
-		public static void FixProjectReferences (this XmlDocument csproj, string suffix, FixReferenceDelegate fixCallback = null)
+		public static void FixProjectReferences (this XmlDocument csproj, string suffix, FixReferenceDelegate fixCallback = null, FixReferenceDelegate fixIncludeCallback = null)
 		{
 			var nodes = csproj.SelectNodes ("/*/*/*[local-name() = 'ProjectReference']");
 			if (nodes.Count == 0)
 				return;
 			foreach (XmlNode n in nodes) {
-				var name = n ["Name"].InnerText;
+				var name = n ["Name"]?.InnerText;
 				string fixed_name = null;
-				if (fixCallback != null && !fixCallback (name, out fixed_name))
+				if (name != null && fixCallback != null && !fixCallback (name, out fixed_name))
 					continue;
 				var include = n.Attributes ["Include"];
 				string fixed_include;
-				if (fixed_name == null) {
+				if (fixIncludeCallback != null && fixIncludeCallback (include.Value, out fixed_include)) {
+					// we're done here
+				} else if (fixed_name == null) {
 					fixed_include = include.Value;
 					fixed_include = fixed_include.Replace (".csproj", suffix + ".csproj");
 					fixed_include = fixed_include.Replace (".fsproj", suffix + ".fsproj");
@@ -456,9 +466,11 @@ public static void FixProjectReferences (this XmlDocument csproj, string suffix,
 					fixed_include = fixed_include.Replace ('/', '\\');
 				}
 				n.Attributes ["Include"].Value = fixed_include;
-				var nameElement = n ["Name"];
-				name = System.IO.Path.GetFileNameWithoutExtension (fixed_include.Replace ('\\', '/'));
-				nameElement.InnerText = name;
+				if (name != null) {
+					var nameElement = n ["Name"];
+					name = System.IO.Path.GetFileNameWithoutExtension (fixed_include.Replace ('\\', '/'));
+					nameElement.InnerText = name;
+				}
 			}
 		}
 
@@ -632,12 +644,43 @@ public static IEnumerable<string> GetNunitAndXunitTestReferences (this XmlDocume
 			}
 		}
 
+		public static void SetSdk (this XmlDocument csproj, string sdk)
+		{
+			var node = csproj.SelectSingleNode ("//*[local-name() = 'Project']");
+			if (node == null)
+				throw new Exception ($"Could not find a 'Project' node");
+			var attrib = node.Attributes ["Sdk"];
+			if (attrib == null)
+				throw new Exception ($"The 'Project' node doesn't have an 'Sdk' attribute");
+			attrib.Value = sdk;
+		}
+
+		public static void SetRuntimeIdentifier (this XmlDocument csproj, string runtimeIdentifier)
+		{
+			var node = csproj.SelectSingleNode ("//*[local-name() = 'RuntimeIdentifier']");
+			if (node == null)
+				throw new Exception ($"Could not find a 'RuntimeIdentifier' node");
+			node.InnerText = runtimeIdentifier;
+		}
+
 		public static void SetProjectReferenceValue (this XmlDocument csproj, string projectInclude, string node, string value)
 		{
 			var nameNode = csproj.SelectSingleNode ("//*[local-name() = 'ProjectReference' and @Include = '" + projectInclude + "']/*[local-name() = '" + node + "']");
 			nameNode.InnerText = value;
 		}
 
+		public static string GetAssetTargetFallback (this XmlDocument csproj)
+		{
+			return csproj.SelectSingleNode ("//*[local-name() = 'AssetTargetFallback']")?.InnerText;
+		}
+
+		public static void SetAssetTargetFallback (this XmlDocument csproj, string value)
+		{
+			var node = csproj.SelectSingleNode ("//*[local-name() = 'AssetTargetFallback']");
+			if (node != null)
+				node.InnerText = value;
+		}
+
 		public static void SetProjectReferenceInclude (this XmlDocument csproj, string projectInclude, string value)
 		{
 			var elements = csproj.SelectElementNodes ("ProjectReference");

tests/xharness/Targets/MacTarget.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using Microsoft.DotNet.XHarness.iOS.Shared;
+using Microsoft.DotNet.XHarness.iOS.Shared.Hardware;
 using Microsoft.DotNet.XHarness.iOS.Shared.Utilities;
 
 namespace Xharness.Targets
@@ -112,7 +113,12 @@ public override string Platform {
 				return "mac";
 			}
 		}
-
+
+		public override string DotNetSdk => "Microsoft.macOS.Sdk";
+		public override string RuntimeIdentifier => "osx-x64";
+		public override DevicePlatform ApplePlatform => DevicePlatform.macOS;
+		public override string TargetFrameworkForNuGet => "xamarinmac10";
+
 		public MonoNativeInfo MonoNativeInfo { get; set; }
 
 		protected override bool FixProjectReference (string name, out string fixed_name)

tests/xharness/Targets/TVOSTarget.cs

@@ -100,6 +100,11 @@ protected override bool SupportsBitcode {
 			}
 		}
 
+		public override string DotNetSdk => "Microsoft.tvOS.Sdk";
+		public override string RuntimeIdentifier => "tvos-x64";
+		public override DevicePlatform ApplePlatform => DevicePlatform.tvOS;
+		public override string TargetFrameworkForNuGet => "xamarintvos10";
+
 		static Dictionary<string, string> project_guids = new Dictionary<string, string> ();
 
 		protected override void ProcessProject ()

tests/xharness/Targets/Target.cs

@@ -3,6 +3,7 @@
 using System.IO;
 using System.Linq;
 using System.Xml;
+using Microsoft.DotNet.XHarness.iOS.Shared.Hardware;
 using Microsoft.DotNet.XHarness.iOS.Shared.Utilities;
 using Microsoft.DotNet.XHarness.iOS.Shared;
 
@@ -26,6 +27,8 @@ public abstract class Target
 
 		public string TemplateProjectPath { get; set; }
 
+		bool? is_dotnet_project;
+		public bool IsDotNetProject { get { return is_dotnet_project ?? (is_dotnet_project = inputProject.IsDotNetProject ()).Value; } }
 		public string OutputType { get { return outputType; } }
 		public string TargetDirectory { get { return targetDirectory; } }
 		public bool IsLibrary { get { return outputType == "Library"; } }
@@ -67,12 +70,44 @@ public abstract class Target
 
 		public string LanguageGuid { get { return IsFSharp ? FSharpGuid : CSharpGuid; } }
 
+		public abstract string DotNetSdk { get; }
+		public abstract string RuntimeIdentifier { get; }
+		public abstract DevicePlatform ApplePlatform { get; }
+		public abstract string TargetFrameworkForNuGet { get; }
+
+		public string PlatformString {
+			get {
+				return ApplePlatform.AsString ();
+			}
+		}
+
 		protected virtual bool FixProjectReference (string name, out string fixed_name)
 		{
 			fixed_name = null;
 			return true;
 		}
 
+		protected virtual bool FixDotNetProjectReference (string include, out string fixed_include)
+		{
+			if (include.EndsWith ("Touch.Client-iOS.dotnet.csproj", StringComparison.Ordinal)) {
+				fixed_include = include.Replace ("-iOS", "-" + PlatformString);
+			} else {
+				fixed_include = include;
+			}
+
+			return true;
+		}
+
+		protected virtual void ProcessDotNetProject ()
+		{
+			inputProject.SetSdk (DotNetSdk);
+			inputProject.SetRuntimeIdentifier (RuntimeIdentifier);
+			inputProject.FixProjectReferences (Suffix, fixIncludeCallback: FixDotNetProjectReference);
+			var fixedAssetTargetFallback = inputProject.GetAssetTargetFallback ()?.Replace ("xamarinios10", TargetFrameworkForNuGet);
+			if (fixedAssetTargetFallback != null)
+				inputProject.SetAssetTargetFallback (fixedAssetTargetFallback);
+		}
+
 		protected virtual void ProcessProject ()
 		{
 			if (SupportsBitcode) {
@@ -143,8 +178,19 @@ protected void CreateLibraryProject ()
 			ProjectGuid = inputProject.GetProjectGuid ();
 		}
 
+		protected virtual void CreateDotNetProject ()
+		{
+			ProcessDotNetProject ();
+			inputProject.Save (ProjectPath, (l, m) => Harness.Log (l, m));
+			UpdateInfoPList ();
+		}
+
 		protected virtual void ExecuteInternal ()
 		{
+			if (IsDotNetProject) {
+				CreateDotNetProject ();
+				return;
+			}
 			switch (OutputType) {
 			case "Exe":
 				CreateExecutableProject ();
@@ -185,22 +231,26 @@ public void Execute ()
 				inputProject.LoadWithoutNetworkAccess (TemplateProjectPath);
 
 				outputType = inputProject.GetOutputType ();
-
-				switch (inputProject.GetImport ()) {
-				case "$(MSBuildExtensionsPath)\\Xamarin\\iOS\\Xamarin.iOS.CSharp.targets":
-				case "$(MSBuildExtensionsPath)\\Xamarin\\iOS\\Xamarin.iOS.FSharp.targets":
-				case "$(MSBuildExtensionsPath)\\Xamarin\\Mac\\Xamarin.Mac.CSharp.targets":
-				case "$(MSBuildExtensionsPath":
-				case "$(MSBuildBinPath)\\Microsoft.CSharp.targets":
-					IsBindingProject = false;
-					break;
-				case "$(MSBuildExtensionsPath)\\Xamarin\\iOS\\Xamarin.iOS.ObjCBinding.CSharp.targets":
-				case "$(MSBuildExtensionsPath)\\Xamarin\\iOS\\Xamarin.iOS.ObjCBinding.FSharp.targets":
-				case "$(MSBuildExtensionsPath)\\Xamarin\\Mac\\Xamarin.Mac.ObjcBinding.CSharp":	
-					IsBindingProject = true;
-					break;
-				default:
-					throw new Exception (string.Format ("Unknown Imports: {0} in {1}", inputProject.GetImport (), TemplateProjectPath));
+
+				if (inputProject.IsDotNetProject ()) {
+					IsBindingProject = string.Equals (inputProject.GetIsBindingProject (), "true", StringComparison.OrdinalIgnoreCase);
+				} else {
+					switch (inputProject.GetImport ()) {
+					case "$(MSBuildExtensionsPath)\\Xamarin\\iOS\\Xamarin.iOS.CSharp.targets":
+					case "$(MSBuildExtensionsPath)\\Xamarin\\iOS\\Xamarin.iOS.FSharp.targets":
+					case "$(MSBuildExtensionsPath)\\Xamarin\\Mac\\Xamarin.Mac.CSharp.targets":
+					case "$(MSBuildExtensionsPath":
+					case "$(MSBuildBinPath)\\Microsoft.CSharp.targets":
+						IsBindingProject = false;
+						break;
+					case "$(MSBuildExtensionsPath)\\Xamarin\\iOS\\Xamarin.iOS.ObjCBinding.CSharp.targets":
+					case "$(MSBuildExtensionsPath)\\Xamarin\\iOS\\Xamarin.iOS.ObjCBinding.FSharp.targets":
+					case "$(MSBuildExtensionsPath)\\Xamarin\\Mac\\Xamarin.Mac.ObjcBinding.CSharp":
+						IsBindingProject = true;
+						break;
+					default:
+						throw new Exception (string.Format ("Unknown Imports: {0} in {1}", inputProject.GetImport (), TemplateProjectPath));
+					}
 				}
 
 				ExecuteInternal ();

tests/xharness/Targets/UnifiedTarget.cs

@@ -128,6 +128,11 @@ protected override bool SupportsBitcode {
 			}
 		}
 
+		public override string DotNetSdk => "Microsoft.iOS.Sdk";
+		public override string RuntimeIdentifier => "ios-x64";
+		public override DevicePlatform ApplePlatform => DevicePlatform.iOS;
+		public override string TargetFrameworkForNuGet => "xamarinios10";
+
 		protected override void ExecuteInternal ()
 		{
 			if (MonoNativeInfo == null)

tests/xharness/Targets/WatchOSTarget.cs

@@ -28,6 +28,11 @@ public override string DeviceArchitectures {
 			get { return "ARMv7k, ARM64_32"; }
 		}
 
+		public override string DotNetSdk => "Microsoft.watchOS.Sdk";
+		public override string RuntimeIdentifier => throw new NotImplementedException ();
+		public override DevicePlatform ApplePlatform => DevicePlatform.watchOS;
+		public override string TargetFrameworkForNuGet => "xamarinwatch10";
+
 		void CreateWatchOSAppProject ()
 		{
 			var csproj = new XmlDocument ();

tests/xharness/Targets/iOSTarget.cs

@@ -6,7 +6,7 @@
 namespace Xharness.Targets
 {
 	// iOS here means Xamarin.iOS, not iOS as opposed to tvOS/watchOS.
-	public class iOSTarget : Target
+	public abstract class iOSTarget : Target
 	{
 		public iOSTestProject TestProject;