5 // Nick Drochak II (ndrochak@gol.com)
6 // Gonzalo Paniagua (gonzalo@ximian.com)
8 // (C) 2001 Nick Drochak II
9 // (c) 2002 Ximian, Inc. (http://www.ximian.com)
10 // Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
12 // Permission is hereby granted, free of charge, to any person obtaining
13 // a copy of this software and associated documentation files (the
14 // "Software"), to deal in the Software without restriction, including
15 // without limitation the rights to use, copy, modify, merge, publish,
16 // distribute, sublicense, and/or sell copies of the Software, and to
17 // permit persons to whom the Software is furnished to do so, subject to
18 // the following conditions:
20 // The above copyright notice and this permission notice shall be
21 // included in all copies or substantial portions of the Software.
23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
32 using System.Globalization;
33 using System.Reflection;
34 using System.Runtime.Remoting;
35 using System.Runtime.Remoting.Activation;
36 using System.Runtime.CompilerServices;
37 using System.Runtime.InteropServices;
38 using System.Security.Permissions;
39 using System.Security.Policy;
40 using System.Configuration.Assemblies;
44 [ClassInterface (ClassInterfaceType.None)]
47 [ComDefaultInterface (typeof (_Activator))]
49 public sealed class Activator : _Activator
51 const BindingFlags _flags = BindingFlags.CreateInstance | BindingFlags.Public | BindingFlags.Instance;
52 const BindingFlags _accessFlags = BindingFlags.DeclaredOnly | BindingFlags.FlattenHierarchy | BindingFlags.IgnoreCase |
53 BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public |
61 public static ObjectHandle CreateComInstanceFrom (string assemblyName, string typeName)
63 if (assemblyName == null)
64 throw new ArgumentNullException ("assemblyName");
67 throw new ArgumentNullException ("typeName");
69 if (assemblyName.Length == 0)
70 throw new ArgumentException ("assemblyName");
72 throw new NotImplementedException();
77 public static ObjectHandle CreateComInstanceFrom (string assemblyName, string typeName,
78 byte []hashValue, AssemblyHashAlgorithm hashAlgorithm)
80 if (assemblyName == null)
81 throw new ArgumentNullException ("assemblyName");
84 throw new ArgumentNullException ("typeName");
86 if (assemblyName.Length == 0)
87 throw new ArgumentException ("assemblyName");
89 throw new NotImplementedException();
93 public static ObjectHandle CreateInstanceFrom (string assemblyFile, string typeName)
95 return CreateInstanceFrom (assemblyFile, typeName, null);
98 public static ObjectHandle CreateInstanceFrom (string assemblyFile, string typeName, object [] activationAttributes)
100 return Activator.CreateInstanceFrom (assemblyFile, typeName, false, _flags, null, null, null,
101 activationAttributes, null);
104 public static ObjectHandle CreateInstanceFrom (string assemblyFile, string typeName, bool ignoreCase,
105 BindingFlags bindingAttr, Binder binder, object [] args,
106 CultureInfo culture, object [] activationAttributes,
107 Evidence securityInfo)
109 Assembly assembly = Assembly.LoadFrom (assemblyFile, securityInfo);
110 if (assembly == null)
113 Type type = assembly.GetType (typeName, true, ignoreCase);
117 object obj = CreateInstance (type, bindingAttr, binder, args, culture, activationAttributes);
118 return (obj != null) ? new ObjectHandle (obj) : null;
121 public static ObjectHandle CreateInstance (string assemblyName, string typeName)
123 if (assemblyName == null)
124 assemblyName = Assembly.GetCallingAssembly ().GetName ().Name;
126 return Activator.CreateInstance (assemblyName, typeName, null);
129 public static ObjectHandle CreateInstance (string assemblyName, string typeName, object [] activationAttributes)
131 if (assemblyName == null)
132 assemblyName = Assembly.GetCallingAssembly ().GetName ().Name;
134 return Activator.CreateInstance (assemblyName, typeName, false, _flags, null, null, null,
135 activationAttributes, null);
138 public static ObjectHandle CreateInstance (string assemblyName, string typeName, bool ignoreCase,
139 BindingFlags bindingAttr, Binder binder, object [] args,
140 CultureInfo culture, object [] activationAttributes, Evidence securityInfo)
142 Assembly assembly = null;
143 if(assemblyName == null)
144 assembly = Assembly.GetCallingAssembly ();
146 assembly = Assembly.Load (assemblyName, securityInfo);
147 Type type = assembly.GetType (typeName, true, ignoreCase);
148 object obj = CreateInstance (type, bindingAttr, binder, args, culture, activationAttributes);
149 return (obj != null) ? new ObjectHandle (obj) : null;
153 public static T CreateInstance <T> ()
155 return (T) CreateInstance (typeof (T));
159 public static object CreateInstance (Type type)
161 return CreateInstance (type, false);
164 public static object CreateInstance (Type type, params object [] args)
166 return CreateInstance (type, args, new object [0]);
169 public static object CreateInstance (Type type, object [] args, object [] activationAttributes)
171 return CreateInstance (type, BindingFlags.Default, Binder.DefaultBinder, args, null, activationAttributes);
174 public static object CreateInstance (Type type, BindingFlags bindingAttr, Binder binder, object [] args,
177 return CreateInstance (type, bindingAttr, binder, args, culture, new object [0]);
180 public static object CreateInstance (Type type, BindingFlags bindingAttr, Binder binder, object [] args,
181 CultureInfo culture, object [] activationAttributes)
185 // It seems to apply the same rules documented for InvokeMember: "If the type of lookup
186 // is omitted, BindingFlags.Public | BindingFlags.Instance will apply".
187 if ((bindingAttr & _accessFlags) == 0)
188 bindingAttr |= BindingFlags.Public | BindingFlags.Instance;
192 length = args.Length;
194 Type[] atypes = length == 0 ? Type.EmptyTypes : new Type [length];
195 for (int i = 0; i < length; ++i)
196 if (args [i] != null)
197 atypes [i] = args [i].GetType ();
200 binder = Binder.DefaultBinder;
202 ConstructorInfo ctor = (ConstructorInfo) binder.SelectMethod (bindingAttr, type.GetConstructors (bindingAttr), atypes, null);
205 // Not sure about this
206 if (type.IsValueType && atypes.Length == 0) {
207 return CreateInstanceInternal (type);
210 throw new MissingMethodException (Locale.GetText ("Constructor not found. Class: ") +
214 CheckAbstractType (type);
216 if (activationAttributes != null && activationAttributes.Length > 0) {
217 if (!type.IsMarshalByRef) {
218 string msg = Locale.GetText ("Type '{0}' doesn't derive from MarshalByRefObject.", type.FullName);
219 throw new NotSupportedException (msg);
221 object newOb = ActivationServices.CreateProxyFromAttributes (type, activationAttributes);
223 return ctor.Invoke (newOb, bindingAttr, binder, args, culture);
226 return ctor.Invoke (bindingAttr, binder, args, culture);
229 public static object CreateInstance (Type type, bool nonPublic)
232 CheckAbstractType (type);
234 BindingFlags flags = BindingFlags.Public | BindingFlags.Instance;
236 flags |= BindingFlags.NonPublic;
238 ConstructorInfo ctor = type.GetConstructor (flags, null, CallingConventions.Any, Type.EmptyTypes, null);
241 if (type.IsValueType)
242 return CreateInstanceInternal (type);
244 throw new MissingMethodException (Locale.GetText ("Default constructor not found."),
245 ".ctor() of " + type.FullName);
248 return ctor.Invoke (null);
251 private static void CheckType (Type type)
254 throw new ArgumentNullException ("type");
256 if ((type == typeof (TypedReference)) || (type == typeof (ArgIterator)) || (type == typeof (void)) ||
257 (type == typeof (RuntimeArgumentHandle))) {
258 string msg = Locale.GetText ("CreateInstance cannot be used to create this type ({0}).", type.FullName);
259 throw new NotSupportedException (msg);
263 private static void CheckAbstractType (Type type)
265 if (type.IsAbstract) {
266 string msg = Locale.GetText ("Cannot create an abstract class '{0}'.", type.FullName);
268 throw new MissingMethodException (msg);
270 throw new MemberAccessException (msg);
275 [SecurityPermission (SecurityAction.LinkDemand, RemotingConfiguration = true)]
276 public static object GetObject (Type type, string url)
279 throw new ArgumentNullException ("type");
281 return RemotingServices.Connect (type, url);
284 [SecurityPermission (SecurityAction.LinkDemand, RemotingConfiguration = true)]
285 public static object GetObject (Type type, string url, object state)
288 throw new ArgumentNullException ("type");
290 return RemotingServices.Connect (type, url, state);
293 [MethodImplAttribute (MethodImplOptions.InternalCall)]
294 internal static extern object CreateInstanceInternal (Type type);
297 void _Activator.GetIDsOfNames ([In] ref Guid riid, IntPtr rgszNames, uint cNames, uint lcid, IntPtr rgDispId)
299 throw new NotImplementedException ();
302 void _Activator.GetTypeInfo (uint iTInfo, uint lcid, IntPtr ppTInfo)
304 throw new NotImplementedException ();
307 void _Activator.GetTypeInfoCount (out uint pcTInfo)
309 throw new NotImplementedException ();
312 void _Activator.Invoke (uint dispIdMember, [In] ref Guid riid, uint lcid, short wFlags, IntPtr pDispParams,
313 IntPtr pVarResult, IntPtr pExcepInfo, IntPtr puArgErr)
315 throw new NotImplementedException ();