[Xamarin.Android.Build.Tasks] Import from monodroid/301e7238

Added Xamarin.Android.Build.Tasks and its supporting Libraries.
Code has also been updated to make uses of the new libraries in
the Java.Interop repository

Note : Xamarin.Android.Build.Tasks has a compile time code
generation step which generates Profile.g.cs. This file contains
the list of SharedRuntimeAssemblies. If building manually you will
need to make sure that Xamarin.Android.Tools.BootstrapTasks is
built first.

.gitignore

@@ -3,3 +3,4 @@ bin
 Configuration.Override.props
 obj
 packages
+.DS_Store

src/Xamarin.Android.Build.Tasks/Generator/Generator.cs

@@ -0,0 +1,58 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using Mono.Cecil;
+using Microsoft.Build.Utilities;
+
+using Java.Interop.Tools.Diagnostics;
+using Java.Interop.Tools.JavaCallableWrappers;
+
+namespace Xamarin.Android.Tasks
+{
+	class Generator
+	{
+		public static bool CreateJavaSources (TaskLoggingHelper log, IEnumerable<TypeDefinition> javaTypes, string outputPath, bool useSharedRuntime, bool generateOnCreateOverrides, bool hasExportReference)
+		{
+			bool ok = true;
+			foreach (var t in javaTypes) {
+				try {
+					GenerateJavaSource (log, t, outputPath, useSharedRuntime, generateOnCreateOverrides, hasExportReference);
+				} catch (XamarinAndroidException xae) {
+					ok = false;
+					log.LogError (
+							subcategory:      "",
+							errorCode:        "XA" + xae.Code,
+							helpKeyword:      string.Empty,
+							file:             xae.SourceFile,
+							lineNumber:       xae.SourceLine,
+							columnNumber:     0,
+							endLineNumber:    0,
+							endColumnNumber:  0,
+							message:          xae.MessageWithoutCode,
+							messageArgs:      new object [0]
+					);
+				}
+			}
+			return ok;
+		}
+
+		static void GenerateJavaSource (TaskLoggingHelper log, TypeDefinition t, string outputPath, bool useSharedRuntime, bool generateOnCreateOverrides, bool hasExportReference)
+		{
+			try {
+				var jti = new JavaCallableWrapperGenerator (t, log.LogWarning) {
+					UseSharedRuntime = useSharedRuntime,
+					GenerateOnCreateOverrides = generateOnCreateOverrides,
+				};
+
+				jti.Generate (outputPath);
+				if (jti.HasExport && !hasExportReference)
+					Diagnostic.Error (4210, "You need to add a reference to Mono.Android.Export.dll when you use ExportAttribute or ExportFieldAttribute.");
+			} catch (Exception ex) {
+				if (ex is XamarinAndroidException)
+					throw;
+				Diagnostic.Error (4209, "Failed to create JavaTypeInfo for class: {0} due to {1}", t.FullName, ex);
+			}
+		}
+	}
+}

src/Xamarin.Android.Build.Tasks/Linker/LinkModes.cs

@@ -0,0 +1,11 @@
+using System;
+
+namespace Xamarin.Android.Tasks
+{
+	public enum LinkModes
+	{
+		None,
+		SdkOnly,
+		Full
+	}
+}

src/Xamarin.Android.Build.Tasks/Linker/Mobile.Tuner/MobileProfile.cs

@@ -0,0 +1,97 @@
+using System;
+using System.Collections.Generic;
+
+using Mono.Cecil;
+
+using Mono.Tuner;
+
+namespace Mobile.Tuner {
+
+	public abstract class MobileProfile : Profile {
+
+		static readonly HashSet<string> Sdk = new HashSet<string> {
+			"mscorlib",
+			"System",
+			"System.ComponentModel.Composition",
+			"System.ComponentModel.DataAnnotations",
+			"System.Core",
+			"System.Data",
+			"System.Data.Services.Client",
+			"System.IO.Compression.FileSystem",
+			"System.IO.Compression",
+			"System.Json",
+			"System.Net",
+			"System.Net.Http",
+			"System.Numerics",
+			"System.Runtime.Serialization",
+			"System.ServiceModel",
+			"System.ServiceModel.Web",
+			"System.Transactions",
+			"System.Web.Services",
+			"System.Windows",
+			"System.Xml",
+			"System.Xml.Linq",
+			"System.Xml.Serialization",
+			"Microsoft.CSharp",
+			"Microsoft.VisualBasic",
+			"Mono.CSharp",
+			"Mono.Cairo",
+			"Mono.CompilerServices.SymbolWriter",
+			"Mono.Data.Tds",
+			"Mono.Data.Sqlite",
+			"Mono.Security",
+			"OpenTK",
+			"OpenTK-1.0",
+			// Facades assemblies (PCL)
+			"System.Collections.Concurrent",
+			"System.Collections",
+			"System.ComponentModel.Annotations",
+			"System.ComponentModel.EventBasedAsync",
+			"System.ComponentModel",
+			"System.Diagnostics.Contracts",
+			"System.Diagnostics.Debug",
+			"System.Diagnostics.Tools",
+			"System.Dynamic.Runtime",
+			"System.EnterpriseServices",
+			"System.Globalization",
+			"System.IO",
+			"System.Linq.Expressions",
+			"System.Linq.Parallel",
+			"System.Linq.Queryable",
+			"System.Linq",
+			"System.Net.NetworkInformation",
+			"System.Net.Primitives",
+			"System.Net.Requests",
+			"System.ObjectModel",
+			"System.Reflection.Extensions",
+			"System.Reflection.Primitives",
+			"System.Reflection",
+			"System.Resources.ResourceManager",
+			"System.Runtime.Extensions",
+			"System.Runtime.InteropServices",
+			"System.Runtime.InteropServices.WindowsRuntime",
+			"System.Runtime.Numerics",
+			"System.Runtime.Serialization.Json",
+			"System.Runtime.Serialization.Primitives",
+			"System.Runtime.Serialization.Xml",
+			"System.Runtime",
+			"System.Security.Principal",
+			"System.ServiceModel.Http",
+			"System.ServiceModel.Primitives",
+			"System.Text.Encoding.Extensions",
+			"System.Text.Encoding",
+			"System.Text.RegularExpressions",
+			"System.Threading.Tasks.Parallel",
+			"System.Threading.Tasks",
+			"System.Threading",
+			"System.Xml.ReaderWriter",
+			"System.Xml.XDocument",
+			"System.Xml.XmlSerializer",
+		};
+
+		protected override bool IsSdk (string assemblyName)
+		{
+			return Sdk.Contains (assemblyName);
+		}
+	}
+}

src/Xamarin.Android.Build.Tasks/Linker/MonoDroid.Tuner/ApplyPreserveAttribute.cs

@@ -0,0 +1,122 @@
+// Copyright 2011, 2015 Xamarin Inc. All rights reserved.
+
+using System;
+
+using Mono.Linker;
+using Mono.Tuner;
+
+using Mono.Cecil;
+
+namespace MonoDroid.Tuner {
+
+	public class ApplyPreserveAttribute : ApplyPreserveAttributeBase {
+
+		// System.ServiceModeldll is an SDK assembly but it does contain types with [DataMember] attributes
+		public override bool IsActiveFor (AssemblyDefinition assembly)
+		{
+			if (Profile.IsSdkAssembly (assembly)) {
+				if (assembly.Name.Name != "System.ServiceModel")
+					return false;
+			}
+			return Annotations.GetAction (assembly) == AssemblyAction.Link;
+		}
+
+		protected override bool IsPreservedAttribute (ICustomAttributeProvider provider, CustomAttribute attribute, out bool removeAttribute)
+		{
+			removeAttribute = false;
+			TypeReference type = attribute.Constructor.DeclaringType;
+
+			switch (type.Namespace) {
+			case "Android.Runtime":
+				// there's no need to keep the [Preserve] attribute in the assembly once it was processed
+				if (type.Name == "PreserveAttribute") {
+					removeAttribute = true;
+					return true;
+				}
+				break;
+			case "System.Runtime.Serialization":
+				bool srs = false;
+				// http://bugzilla.xamarin.com/show_bug.cgi?id=1415
+				// http://msdn.microsoft.com/en-us/library/system.runtime.serialization.datamemberattribute.aspx
+				if (provider is PropertyDefinition || provider is FieldDefinition || provider is EventDefinition)
+					srs = (type.Name == "DataMemberAttribute");
+				else if (provider is TypeDefinition)
+					srs = (type.Name == "DataContractAttribute");
+
+				if (srs) {
+					MarkDefautConstructor (provider);
+					return true;
+				}
+				break;
+			case "System.Xml.Serialization":
+				// http://msdn.microsoft.com/en-us/library/83y7df3e.aspx
+				string name = type.Name;
+				if ((name.StartsWith ("Xml", StringComparison.Ordinal) && name.EndsWith ("Attribute", StringComparison.Ordinal))) {
+					// but we do not have to keep things that XML serialization will ignore anyway!
+					if (name != "XmlIgnoreAttribute") {
+						// the default constructor of the type *being used* is needed
+						MarkDefautConstructor (provider);
+						return true;
+					}
+				}
+				break;
+			default:
+				if (type.Name == "PreserveAttribute") {
+					// there's no need to keep the [Preserve] attribute in the assembly once it was processed
+					removeAttribute = true;
+					return true;
+				}
+				break;
+			}
+			// keep them (provider and attribute)
+			return false;
+		}
+
+		// xml serialization requires the default .ctor to be present
+		void MarkDefautConstructor (ICustomAttributeProvider provider)
+		{
+			TypeDefinition td = (provider as TypeDefinition);
+			if (td == null) {
+				PropertyDefinition pd = (provider as PropertyDefinition);
+				if (pd != null) {
+					MarkDefautConstructor (pd.DeclaringType);					
+					MarkGenericType (pd.PropertyType as GenericInstanceType);
+					td = pd.PropertyType.Resolve ();
+				} else {
+					FieldDefinition fd = (provider as FieldDefinition);
+					if (fd != null) {
+						MarkDefautConstructor (fd.DeclaringType);
+						MarkGenericType (fd.FieldType as GenericInstanceType);
+						td = (fd.FieldType as TypeReference).Resolve ();
+					}
+				}
+			}
+
+			// e.g. <T> property (see bug #5543) or field (see linkall unit tests)
+			if (td != null)
+				MarkDefautConstructor (td);			
+		}
+
+		void MarkGenericType (GenericInstanceType git)
+		{
+			if (git == null || !git.HasGenericArguments)
+				return;
+
+			foreach (TypeReference tr in git.GenericArguments)
+				MarkDefautConstructor (tr.Resolve ());
+		}
+
+		void MarkDefautConstructor (TypeDefinition type)
+		{
+			if ((type == null) || !type.HasMethods)
+				return;
+
+			foreach (MethodDefinition ctor in type.Methods) {
+				if (!ctor.IsConstructor || ctor.IsStatic || ctor.HasParameters)
+					continue;
+
+				Annotations.AddPreservedMethod (type, ctor);
+			}
+		}
+	}
+}

src/Xamarin.Android.Build.Tasks/Linker/MonoDroid.Tuner/Extensions.cs

@@ -0,0 +1,101 @@
+using System;
+using System.Collections.Generic;
+
+using Mono.Cecil;
+
+using Mono.Linker;
+
+using Mono.Tuner;
+
+namespace MonoDroid.Tuner {
+
+	static class Extensions {
+
+		const string JavaObject = "Java.Lang.Object";
+		const string IJavaObject = "Android.Runtime.IJavaObject";
+		const string JavaThrowable = "Java.Lang.Throwable";
+
+		public static bool IsJavaObject (this TypeDefinition type)
+		{
+			return type.Inherits (JavaObject);
+		}
+
+		public static bool IsJavaException (this TypeDefinition type)
+		{
+			return type.Inherits (JavaThrowable);
+		}
+
+		public static bool ImplementsIJavaObject (this TypeDefinition type)
+		{
+			return type.Implements (IJavaObject);
+		}
+
+		public static object GetSettableValue (this CustomAttributeArgument arg)
+		{
+			TypeReference tr = arg.Value as TypeReference;
+			TypeDefinition td = tr != null ? tr.Resolve () : null;
+			return td != null ? td.FullName + "," + td.Module.Assembly.FullName : arg.Value;
+		}
+
+		public static bool Implements (this TypeReference self, string interfaceName)
+		{
+			if (interfaceName == null)
+				throw new ArgumentNullException ("interfaceName");
+			if (self == null)
+				return false;
+
+			TypeDefinition type = self.Resolve ();
+			if (type == null)
+				return false;	// not enough information available
+
+			// special case, check if we implement ourselves
+			if (type.IsInterface && (type.FullName == interfaceName))
+				return true;
+
+			return Implements (type, interfaceName, (interfaceName.IndexOf ('`') >= 0));
+		}
+
+		public static bool Implements (TypeDefinition type, string interfaceName, bool generic)
+		{
+			while (type != null) {
+				// does the type implements it itself
+				if (type.HasInterfaces) {
+					foreach (TypeReference iface in type.Interfaces) {
+						string fullname = (generic) ? iface.GetElementType ().FullName : iface.FullName;
+						if (fullname == interfaceName)
+							return true;
+						//if not, then maybe one of its parent interfaces does
+						if (Implements (iface.Resolve (), interfaceName, generic))
+							return true;
+					}
+				}
+
+				type = type.BaseType != null ? type.BaseType.Resolve () : null;
+			}
+			return false;
+		}
+
+		public static bool Inherits (this TypeReference self, string className)
+		{
+			if (className == null)
+				throw new ArgumentNullException ("className");
+			if (self == null)
+				return false;
+
+			TypeReference current = self.Resolve ();
+			while (current != null) {
+				string fullname = current.FullName;
+				if (fullname == className)
+					return true;
+				if (fullname == "System.Object")
+					return false;
+
+				TypeDefinition td = current.Resolve ();
+				if (td == null)
+					return false;		// could not resolve type
+				current = td.BaseType;
+			}
+			return false;
+		}
+	}
+}