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| 1 | +using System; |
| 2 | +using System.IO; |
| 3 | +using System.Linq.Expressions; |
| 4 | +using System.Reflection; |
| 5 | +using System.Reflection.Emit; |
| 6 | + |
| 7 | +using Java.Interop; |
| 8 | + |
| 9 | +namespace Xamarin.Android.Tools.JniMarshalMethodGenerator { |
| 10 | + |
| 11 | + class App { |
| 12 | + |
| 13 | + internal const string Name = "jnimarshalmethod-gen"; |
| 14 | + |
| 15 | + public static void Main (string[] args) |
| 16 | + { |
| 17 | + var jvm = CreateJavaVM (); |
| 18 | + |
| 19 | + foreach (var path in args) { |
| 20 | + if (!File.Exists (path)) { |
| 21 | + Console.Error.WriteLine ("{0}: Path '{1}' does not exist.", Name, path); |
| 22 | + continue; |
| 23 | + } |
| 24 | + try { |
| 25 | + CreateMarshalMethodAssembly (path); |
| 26 | + } |
| 27 | + catch (Exception e) { |
| 28 | + Console.Error.WriteLine ("{0}: {1}", Name, e.Message); |
| 29 | + Console.WriteLine (e); |
| 30 | + Environment.ExitCode = 1; |
| 31 | + } |
| 32 | + } |
| 33 | + |
| 34 | + jvm.Dispose (); |
| 35 | + } |
| 36 | + |
| 37 | + static JavaVM CreateJavaVM () |
| 38 | + { |
| 39 | + var builder = new JreVMBuilder (); |
| 40 | + return builder.CreateJreVM (); |
| 41 | + } |
| 42 | + |
| 43 | + static ExportedMemberBuilder CreateExportedMemberBuilder () |
| 44 | + { |
| 45 | + return new ExportedMemberBuilder (JniEnvironment.Current.JavaVM); |
| 46 | + } |
| 47 | + |
| 48 | + static void CreateMarshalMethodAssembly (string path) |
| 49 | + { |
| 50 | + var assembly = Assembly.LoadFile (path); |
| 51 | + |
| 52 | + var baseName = Path.GetFileNameWithoutExtension (path); |
| 53 | + var assemblyName = new AssemblyName (baseName + "-JniMarshalMethods"); |
| 54 | + var destPath = assemblyName.Name + ".dll"; |
| 55 | + var builder = CreateExportedMemberBuilder (); |
| 56 | + |
| 57 | + var da = AppDomain.CurrentDomain.DefineDynamicAssembly ( |
| 58 | + assemblyName, |
| 59 | + AssemblyBuilderAccess.Save, |
| 60 | + Path.GetDirectoryName (path)); |
| 61 | + |
| 62 | + var dm = da.DefineDynamicModule ("<default>", destPath); |
| 63 | + |
| 64 | + foreach (var type in assembly.DefinedTypes) { |
| 65 | + TypeBuilder dt = null; |
| 66 | + |
| 67 | + var flags = BindingFlags.Public | BindingFlags.NonPublic | |
| 68 | + BindingFlags.Instance | BindingFlags.Static; |
| 69 | + foreach (var method in type.GetMethods (flags )) { |
| 70 | + // TODO: Constructors, [Register] methods |
| 71 | + var export = method.GetCustomAttribute<ExportAttribute> (); |
| 72 | + if (export == null) |
| 73 | + continue; |
| 74 | + if (dt == null) |
| 75 | + dt = dm.DefineType (type.FullName, TypeAttributes.Public | TypeAttributes.Sealed); |
| 76 | + |
| 77 | + var mb = dt.DefineMethod ( |
| 78 | + method.Name, |
| 79 | + MethodAttributes.Public | MethodAttributes.Static); |
| 80 | + var lambda = builder.CreateMarshalFromJniMethodExpression (export, type, method); |
| 81 | + lambda.CompileToMethod (mb); |
| 82 | + } |
| 83 | + if (dt != null) |
| 84 | + dt.CreateType (); |
| 85 | + } |
| 86 | + da.Save (destPath); |
| 87 | + } |
| 88 | + } |
| 89 | +} |
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