extensions/mono/src/wrapped-clr.cs

   1 using System;
   2 using System.Reflection;
   3 using System.Runtime.InteropServices;
   4 using Mozilla.XPCOM;
   5
   6 using MethodDescriptor = Mozilla.XPCOM.TypeInfo.MethodDescriptor;
   7 using ParamDescriptor = Mozilla.XPCOM.TypeInfo.ParamDescriptor;
   8 using ParamFlags = Mozilla.XPCOM.TypeInfo.ParamFlags;
   9 using TypeDescriptor = Mozilla.XPCOM.TypeInfo.TypeDescriptor;
  10 using TypeFlags = Mozilla.XPCOM.TypeInfo.TypeFlags;
  11 using TypeTag = Mozilla.XPCOM.TypeInfo.TypeTag;
  12
  13 namespace Mozilla.XPCOM {
  14 internal class CLRWrapper
  15 {
  16     public static IntPtr Wrap(object o, ref Guid iid)
  17     {
  18         CLRWrapper wrapper = new CLRWrapper(o, ref iid);
  19         return wrapper.MakeXPCOMProxy();
  20     }
  21
  22     int InvokeMethod(int index, IntPtr args)
  23     {
  24         Console.WriteLine("invoking method {0} on {1}", index,
  25                           wrappedObj);
  26         MethodDescriptor desc = TypeInfo.GetMethodData(wrappedAsIID, index);
  27         Type ifaceType = TypeInfo.TypeForIID(wrappedAsIID);
  28         // Console.WriteLine("ifaceType: {0}", ifaceType);
  29         MethodInfo meth = ifaceType.GetMethod(desc.name);
  30         // Console.WriteLine("meth: {0}", meth);
  31         // This might just throw on you, if it's not a void-taking method
  32         meth.Invoke(wrappedObj, new object[0]);
  33         return 0;
  34     }
  35
  36     CLRWrapper(object o, ref Guid iid)
  37     {
  38         wrappedObj = o;
  39         wrappedAsIID = iid;
  40     }
  41
  42     object wrappedObj;
  43     Guid wrappedAsIID;
  44
  45     delegate int MethodInvoker(int index, IntPtr args);
  46
  47     [DllImport("xpcom-dotnet.so")]
  48         static extern IntPtr WrapCLRObject(MethodInvoker del, ref Guid iid);
  49
  50     IntPtr MakeXPCOMProxy()
  51     {
  52         return WrapCLRObject(new MethodInvoker(this.InvokeMethod),
  53                              ref wrappedAsIID);
  54     }
  55 }
  56
  57 } // namespace Mozilla.XPCOM