1 files changed, 145 insertions, 0 deletions
diff --git a/mono/DBusType/Dict.cs b/mono/DBusType/Dict.cs
new file mode 100644
index 00000000..e6fce159
--- /dev/null
+++ b/mono/DBusType/Dict.cs
@@ -0,0 +1,145 @@
+using System;
+using System.Collections;
+using System.Runtime.InteropServices;
+using System.Reflection.Emit;
+
+using DBus;
+
+namespace DBus.DBusType
+{
+  /// <summary>
+  /// Dict.
+  /// </summary>
+  public class Dict : IDBusType
+  {
+    public const char Code = 'm';
+    private Hashtable val;
+    
+    private Dict()
+    {
+    }
+    
+    public Dict(IDictionary val)
+    {
+      this.val = new Hashtable();
+      foreach (DictionaryEntry entry in val) {
+	this.val.Add(entry.Key, entry.Value);
+      }
+    }
+
+    public Dict(IntPtr iter)
+    {
+      IntPtr dictIter = Marshal.AllocCoTaskMem(Arguments.DBusMessageIterSize);
+      
+      dbus_message_iter_init_dict_iterator(iter, dictIter);
+
+      this.val = new Hashtable();
+
+      do {
+	string key = dbus_message_iter_get_dict_key(dictIter);
+
+	// Get the argument type and get the value
+	Type elementType = (Type) DBus.Arguments.DBusTypes[(char) dbus_message_iter_get_arg_type(dictIter)];
+	object [] pars = new Object[1];
+	pars[0] = dictIter;
+	DBusType.IDBusType dbusType = (DBusType.IDBusType) Activator.CreateInstance(elementType, pars);
+	this.val.Add(key, dbusType);
+      } while (dbus_message_iter_next(dictIter));
+      
+      Marshal.FreeCoTaskMem(dictIter);
+    }
+    
+    public void Append(IntPtr iter)
+    {
+      IntPtr dictIter = Marshal.AllocCoTaskMem(Arguments.DBusMessageIterSize);
+
+      if (!dbus_message_iter_append_dict(iter,
+					 dictIter)) {
+	throw new ApplicationException("Failed to append DICT argument:" + val);
+      }
+
+      foreach (DictionaryEntry entry in this.val) {
+	if (!dbus_message_iter_append_dict_key(dictIter, (string) entry.Key)) {
+	  throw new ApplicationException("Failed to append DICT key:" + entry.Key);
+	}
+	
+	// Get the element type
+	Type elementType = Arguments.MatchType(entry.Value.GetType());
+	object [] pars = new Object[1];
+	pars[0] = entry.Value;
+	DBusType.IDBusType dbusType = (DBusType.IDBusType) Activator.CreateInstance(elementType, pars);
+	dbusType.Append(dictIter);
+      }
+
+      Marshal.FreeCoTaskMem(dictIter);
+    }    
+
+    public static bool Suits(System.Type type) 
+    {
+      if (typeof(IDictionary).IsAssignableFrom(type)) {
+	return true;
+      }
+            
+      return false;
+    }
+
+    public static void EmitMarshalIn(ILGenerator generator, Type type)
+    {
+      if (type.IsByRef) {
+	generator.Emit(OpCodes.Ldind_Ref);
+      }
+    }
+
+    public static void EmitMarshalOut(ILGenerator generator, Type type, bool isReturn) 
+    {
+      generator.Emit(OpCodes.Castclass, type);
+      if (!isReturn) {
+	generator.Emit(OpCodes.Stind_Ref);
+      }
+    }
+    
+    public object Get() 
+    {
+      return Get(typeof(Hashtable));
+    }
+
+    public object Get(System.Type type)
+    {
+      IDictionary retVal;
+
+      if (Suits(type)) {
+	retVal = (IDictionary) Activator.CreateInstance(type, new object[0]);
+	foreach (DictionaryEntry entry in this.val) {
+	  retVal.Add(entry.Key, ((IDBusType) entry.Value).Get());
+	}
+      } else {
+	throw new ArgumentException("Cannot cast DBus.Type.Dict to type '" + type.ToString() + "'");
+      }
+	
+      return retVal;
+    }    
+
+    [DllImport("dbus-1")]
+    private extern static void dbus_message_iter_init_dict_iterator(IntPtr iter,
+								    IntPtr dictIter);
+ 
+    [DllImport("dbus-1")]
+    private extern static bool dbus_message_iter_append_dict(IntPtr iter, 
+							     IntPtr dictIter);
+
+    [DllImport("dbus-1")]
+    private extern static bool dbus_message_iter_has_next(IntPtr iter);
+
+    [DllImport("dbus-1")]
+    private extern static bool dbus_message_iter_next(IntPtr iter);
+
+    [DllImport("dbus-1")]
+    private extern static string dbus_message_iter_get_dict_key (IntPtr dictIter);  
+
+    [DllImport("dbus-1")]
+    private extern static bool dbus_message_iter_append_dict_key (IntPtr dictIter,
+								  string value);
+    [DllImport("dbus-1")]
+    private extern static int dbus_message_iter_get_arg_type(IntPtr iter);
+  }
+}