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GenerateJavaStubs.cs
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GenerateJavaStubs.cs
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// Copyright (C) 2011 Xamarin, Inc. All rights reserved.
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Xml.Linq;
using Microsoft.Build.Framework;
using Microsoft.Build.Utilities;
using MonoDroid.Utils;
using Mono.Cecil;
using Java.Interop.Tools.Cecil;
using Java.Interop.Tools.Diagnostics;
using Java.Interop.Tools.JavaCallableWrappers;
using Java.Interop.Tools.TypeNameMappings;
using Xamarin.Android.Tools;
namespace Xamarin.Android.Tasks
{
using PackageNamingPolicyEnum = PackageNamingPolicy;
public class GenerateJavaStubs : Task
{
[Required]
public ITaskItem[] ResolvedAssemblies { get; set; }
[Required]
public ITaskItem[] ResolvedUserAssemblies { get; set; }
[Required]
public string AcwMapFile { get; set; }
[Required]
public ITaskItem [] FrameworkDirectories { get; set; }
public string ManifestTemplate { get; set; }
public string[] MergedManifestDocuments { get; set; }
public bool Debug { get; set; }
public bool MultiDex { get; set; }
public string ApplicationName { get; set; }
public string PackageName { get; set; }
public string [] ManifestPlaceholders { get; set; }
public string AndroidSdkDir { get; set; }
public string AndroidSdkPlatform { get; set; }
public string OutputDirectory { get; set; }
public string MergedAndroidManifestOutput { get; set; }
public bool EmbedAssemblies { get; set; }
public bool NeedsInternet { get; set; }
public bool InstantRunEnabled { get; set; }
public bool UseSharedRuntime { get; set; }
public bool ErrorOnCustomJavaObject { get; set; }
[Required]
public string ResourceDirectory { get; set; }
public string BundledWearApplicationName { get; set; }
public string PackageNamingPolicy { get; set; }
public string ApplicationJavaClass { get; set; }
public override bool Execute ()
{
try {
// We're going to do 3 steps here instead of separate tasks so
// we can share the list of JLO TypeDefinitions between them
using (var res = new DirectoryAssemblyResolver (this.CreateTaskLogger (), loadDebugSymbols: true)) {
Run (res);
}
} catch (XamarinAndroidException e) {
Log.LogCodedError (string.Format ("XA{0:0000}", e.Code), e.MessageWithoutCode);
if (MonoAndroidHelper.LogInternalExceptions)
Log.LogMessage (e.ToString ());
}
if (Log.HasLoggedErrors) {
// Ensure that on a rebuild, we don't *skip* the `_GenerateJavaStubs` target,
// by ensuring that the target outputs have been deleted.
Files.DeleteFile (MergedAndroidManifestOutput, Log);
Files.DeleteFile (AcwMapFile, Log);
Files.DeleteFile (Path.Combine (OutputDirectory, "typemap.jm"), Log);
Files.DeleteFile (Path.Combine (OutputDirectory, "typemap.mj"), Log);
}
return !Log.HasLoggedErrors;
}
void Run (DirectoryAssemblyResolver res)
{
PackageNamingPolicy pnp;
JavaNativeTypeManager.PackageNamingPolicy = Enum.TryParse (PackageNamingPolicy, out pnp) ? pnp : PackageNamingPolicyEnum.LowercaseHash;
foreach (var dir in FrameworkDirectories) {
if (Directory.Exists (dir.ItemSpec))
res.SearchDirectories.Add (dir.ItemSpec);
}
var selectedWhitelistAssemblies = new List<string> ();
// Put every assembly we'll need in the resolver
foreach (var assembly in ResolvedAssemblies) {
var assemblyFullPath = Path.GetFullPath (assembly.ItemSpec);
res.Load (assemblyFullPath);
if (MonoAndroidHelper.FrameworkAttributeLookupTargets.Any (a => Path.GetFileName (assembly.ItemSpec) == a))
selectedWhitelistAssemblies.Add (assemblyFullPath);
}
// However we only want to look for JLO types in user code
var assemblies = ResolvedUserAssemblies.Select (p => p.ItemSpec).ToList ();
var fxAdditions = MonoAndroidHelper.GetFrameworkAssembliesToTreatAsUserAssemblies (ResolvedAssemblies)
.Where (a => assemblies.All (x => Path.GetFileName (x) != Path.GetFileName (a)));
assemblies = assemblies.Concat (fxAdditions).ToList ();
// Step 1 - Find all the JLO types
var scanner = new JavaTypeScanner (this.CreateTaskLogger ()) {
ErrorOnCustomJavaObject = ErrorOnCustomJavaObject,
};
var all_java_types = scanner.GetJavaTypes (assemblies, res);
WriteTypeMappings (all_java_types);
var java_types = all_java_types
.Where (t => !JavaTypeScanner.ShouldSkipJavaCallableWrapperGeneration (t))
.ToArray ();
// Step 2 - Generate Java stub code
var success = Generator.CreateJavaSources (
Log,
java_types,
Path.Combine (OutputDirectory, "src"),
ApplicationJavaClass,
UseSharedRuntime,
int.Parse (AndroidSdkPlatform) <= 10,
ResolvedAssemblies.Any (assembly => Path.GetFileName (assembly.ItemSpec) == "Mono.Android.Export.dll"));
if (!success)
return;
// We need to save a map of .NET type -> ACW type for resource file fixups
var managed = new Dictionary<string, TypeDefinition> (java_types.Length, StringComparer.Ordinal);
var java = new Dictionary<string, TypeDefinition> (java_types.Length, StringComparer.Ordinal);
var managedConflicts = new Dictionary<string, List<string>> (0, StringComparer.Ordinal);
var javaConflicts = new Dictionary<string, List<string>> (0, StringComparer.Ordinal);
// Allocate a MemoryStream with a reasonable guess at its capacity
using (var stream = new MemoryStream (java_types.Length * 32))
using (var acw_map = new StreamWriter (stream)) {
foreach (var type in java_types) {
string managedKey = type.FullName.Replace ('/', '.');
string javaKey = JavaNativeTypeManager.ToJniName (type).Replace ('/', '.');
acw_map.Write (type.GetPartialAssemblyQualifiedName ());
acw_map.Write (';');
acw_map.Write (javaKey);
acw_map.WriteLine ();
TypeDefinition conflict;
bool hasConflict = false;
if (managed.TryGetValue (managedKey, out conflict)) {
if (!managedConflicts.TryGetValue (managedKey, out var list))
managedConflicts.Add (managedKey, list = new List<string> { conflict.GetPartialAssemblyName () });
list.Add (type.GetPartialAssemblyName ());
hasConflict = true;
}
if (java.TryGetValue (javaKey, out conflict)) {
if (!javaConflicts.TryGetValue (javaKey, out var list))
javaConflicts.Add (javaKey, list = new List<string> { conflict.GetAssemblyQualifiedName () });
list.Add (type.GetAssemblyQualifiedName ());
success = false;
hasConflict = true;
}
if (!hasConflict) {
managed.Add (managedKey, type);
java.Add (javaKey, type);
acw_map.Write (managedKey);
acw_map.Write (';');
acw_map.Write (javaKey);
acw_map.WriteLine ();
acw_map.Write (JavaNativeTypeManager.ToCompatJniName (type).Replace ('/', '.'));
acw_map.Write (';');
acw_map.Write (javaKey);
acw_map.WriteLine ();
}
}
acw_map.Flush ();
MonoAndroidHelper.CopyIfStreamChanged (stream, AcwMapFile);
}
foreach (var kvp in managedConflicts) {
Log.LogCodedWarning (
"XA4214",
"The managed type `{0}` exists in multiple assemblies: {1}. " +
"Please refactor the managed type names in these assemblies so that they are not identical.",
kvp.Key,
string.Join (", ", kvp.Value));
Log.LogCodedWarning ("XA4214", "References to the type `{0}` will refer to `{0}, {1}`.", kvp.Key, kvp.Value [0]);
}
foreach (var kvp in javaConflicts) {
Log.LogCodedError (
"XA4215",
"The Java type `{0}` is generated by more than one managed type. " +
"Please change the [Register] attribute so that the same Java type is not emitted.",
kvp.Key);
foreach (var typeName in kvp.Value)
Log.LogCodedError ("XA4215", " `{0}` generated by: {1}", kvp.Key, typeName);
}
// Step 3 - Merge [Activity] and friends into AndroidManifest.xml
var manifest = new ManifestDocument (ManifestTemplate, this.Log);
manifest.PackageName = PackageName;
manifest.ApplicationName = ApplicationName ?? PackageName;
manifest.Placeholders = ManifestPlaceholders;
manifest.Assemblies.AddRange (assemblies);
manifest.Resolver = res;
manifest.SdkDir = AndroidSdkDir;
manifest.SdkVersion = AndroidSdkPlatform;
manifest.Debug = Debug;
manifest.MultiDex = MultiDex;
manifest.NeedsInternet = NeedsInternet;
manifest.InstantRunEnabled = InstantRunEnabled;
var additionalProviders = manifest.Merge (all_java_types, selectedWhitelistAssemblies, ApplicationJavaClass, EmbedAssemblies, BundledWearApplicationName, MergedManifestDocuments);
using (var stream = new MemoryStream ()) {
manifest.Save (stream);
// Only write the new manifest if it actually changed
MonoAndroidHelper.CopyIfStreamChanged (stream, MergedAndroidManifestOutput);
}
// Create additional runtime provider java sources.
string providerTemplateFile = UseSharedRuntime ? "MonoRuntimeProvider.Shared.java" : "MonoRuntimeProvider.Bundled.java";
string providerTemplate = GetResource<JavaCallableWrapperGenerator> (providerTemplateFile);
foreach (var provider in additionalProviders) {
var contents = providerTemplate.Replace ("MonoRuntimeProvider", provider);
var real_provider = Path.Combine (OutputDirectory, "src", "mono", provider + ".java");
MonoAndroidHelper.CopyIfStringChanged (contents, real_provider);
}
// Create additional application java sources.
StringWriter regCallsWriter = new StringWriter ();
regCallsWriter.WriteLine ("\t\t// Application and Instrumentation ACWs must be registered first.");
foreach (var type in java_types) {
if (JavaNativeTypeManager.IsApplication (type) || JavaNativeTypeManager.IsInstrumentation (type)) {
string javaKey = JavaNativeTypeManager.ToJniName (type).Replace ('/', '.');
regCallsWriter.WriteLine ("\t\tmono.android.Runtime.register (\"{0}\", {1}.class, {1}.__md_methods);",
type.GetAssemblyQualifiedName (), javaKey);
}
}
regCallsWriter.Close ();
var real_app_dir = Path.Combine (OutputDirectory, "src", "mono", "android", "app");
string applicationTemplateFile = "ApplicationRegistration.java";
SaveResource (applicationTemplateFile, applicationTemplateFile, real_app_dir,
template => template.Replace ("// REGISTER_APPLICATION_AND_INSTRUMENTATION_CLASSES_HERE", regCallsWriter.ToString ()));
// Create NotifyTimeZoneChanges java sources.
string notifyTimeZoneChangesFile = "NotifyTimeZoneChanges.java";
SaveResource (notifyTimeZoneChangesFile, notifyTimeZoneChangesFile, real_app_dir, template => template);
}
string GetResource <T> (string resource)
{
using (var stream = typeof (T).Assembly.GetManifestResourceStream (resource))
using (var reader = new StreamReader (stream))
return reader.ReadToEnd ();
}
void SaveResource (string resource, string filename, string destDir, Func<string, string> applyTemplate)
{
string template = GetResource<GenerateJavaStubs> (resource);
template = applyTemplate (template);
MonoAndroidHelper.CopyIfStringChanged (template, Path.Combine (destDir, filename));
}
void WriteTypeMappings (List<TypeDefinition> types)
{
using (var gen = UseSharedRuntime
? new TypeNameMapGenerator (types, Log.LogDebugMessage)
: new TypeNameMapGenerator (ResolvedAssemblies.Select (p => p.ItemSpec), Log.LogDebugMessage)) {
UpdateWhenChanged (Path.Combine (OutputDirectory, "typemap.jm"), gen.WriteJavaToManaged);
UpdateWhenChanged (Path.Combine (OutputDirectory, "typemap.mj"), gen.WriteManagedToJava);
}
}
void UpdateWhenChanged (string path, Action<Stream> generator)
{
using (var stream = new MemoryStream ()) {
generator (stream);
MonoAndroidHelper.CopyIfStreamChanged (stream, path);
}
}
}
}