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//
// System.Activator.cs
//
// Authors:
// Nick Drochak II (ndrochak@gol.com)
// Gonzalo Paniagua (gonzalo@ximian.com)
//
// (C) 2001 Nick Drochak II
// (c) 2002 Ximian, Inc. (http://www.ximian.com)
//
using System.Globalization;
using System.Reflection;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Activation;
using System.Runtime.CompilerServices;
using System.Security.Policy;
namespace System
{
public sealed class Activator
{
private static BindingFlags _flags = BindingFlags.CreateInstance |
BindingFlags.Public |
BindingFlags.Instance;
private Activator () {}
[MonoTODO]
public static ObjectHandle CreateComInstanceFrom (string assemblyName, string typeName)
{
throw new NotImplementedException();
}
public static ObjectHandle CreateInstanceFrom (string assemblyFile, string typeName)
{
return CreateInstanceFrom (assemblyFile, typeName, null);
}
public static ObjectHandle CreateInstanceFrom (string assemblyFile,
string typeName,
object [] activationAttributes)
{
return Activator.CreateInstanceFrom (assemblyFile,
typeName,
false,
_flags,
null,
null,
null,
activationAttributes,
null);
}
[MonoTODO]
public static ObjectHandle CreateInstanceFrom (string assemblyFile,
string typeName,
bool ignoreCase,
BindingFlags bindingAttr,
Binder binder,
object [] args,
CultureInfo culture,
object [] activationAttributes,
Evidence securityInfo)
{
//TODO: when Assembly implements security, use it.
//Assembly assembly = Assembly.LoadFrom (assemblyFile, securityInfo);
Assembly assembly = Assembly.LoadFrom (assemblyFile);
if (assembly == null)
return null;
Type type = assembly.GetType (typeName, true, ignoreCase);
if (type == null)
return null;
object obj = CreateInstance (type, bindingAttr, binder, args, culture, activationAttributes);
return (obj != null) ? new ObjectHandle (obj) : null;
}
public static ObjectHandle CreateInstance (string assemblyName, string typeName)
{
return Activator.CreateInstance (assemblyName, typeName, null);
}
public static ObjectHandle CreateInstance (string assemblyName,
string typeName,
object [] activationAttributes)
{
return Activator.CreateInstance (assemblyName,
typeName,
false,
_flags,
null,
null,
null,
activationAttributes,
null);
}
[MonoTODO]
public static ObjectHandle CreateInstance (string assemblyName,
string typeName,
bool ignoreCase,
BindingFlags bindingAttr,
Binder binder,
object [] args,
CultureInfo culture,
object [] activationAttributes,
Evidence securityInfo)
{
//TODO: when Assembly implements security, use it.
//Assembly assembly = Assembly.Load (assemblyFile, securityInfo);
Assembly assembly = Assembly.Load (assemblyName);
Type type = assembly.GetType (typeName, true, ignoreCase);
object obj = CreateInstance (type, bindingAttr, binder, args, culture, activationAttributes);
return (obj != null) ? new ObjectHandle (obj) : null;
}
public static object CreateInstance (Type type)
{
return CreateInstance (type, false);
}
public static object CreateInstance (Type type, object [] args)
{
return CreateInstance (type, args, new object [0]);
}
[MonoTODO]
public static object CreateInstance (Type type, object [] args, object [] activationAttributes)
{
if (type == null)
throw new ArgumentNullException ("type");
if (type.IsAbstract)
throw new MemberAccessException ("Cannot create an abstract class");
int length = 0;
if (args != null)
length = args.Length;
Type [] atypes = new Type [length];
for (int i = 0; i < length; ++i) {
atypes [i] = args [i].GetType ();
}
ConstructorInfo ctor = type.GetConstructor (atypes);
if (ctor == null) {
if (type.IsValueType && atypes.Length == 0)
return CreateInstanceInternal (type);
throw new MissingMethodException ("Constructor not found");
}
if (activationAttributes != null && activationAttributes.Length > 0) {
object newOb = ActivationServices.CreateProxyFromAttributes (type, activationAttributes);
if (newOb != null)
return ctor.Invoke (newOb, args);
}
return ctor.Invoke (args);
}
public static object CreateInstance (Type type,
BindingFlags bindingAttr,
Binder binder,
object [] args,
CultureInfo culture)
{
return CreateInstance (type, bindingAttr, binder, args, culture, new object [0]);
}
[MonoTODO]
public static object CreateInstance (Type type,
BindingFlags bindingAttr,
Binder binder,
object [] args,
CultureInfo culture,
object [] activationAttributes)
{
if (type == null)
throw new ArgumentNullException ("type");
if (type.IsAbstract)
throw new MemberAccessException ("Cannot create an abstract class");
int length = 0;
if (args != null)
length = args.Length;
Type[] atypes = new Type [length];
for (int i = 0; i < length; ++i) {
atypes [i] = args [i].GetType ();
}
ConstructorInfo ctor = type.GetConstructor (bindingAttr, binder, atypes, null);
if (ctor == null) {
// Not sure about this
if (type.IsValueType && atypes.Length == 0) {
return CreateInstanceInternal (type);
}
throw new MissingMethodException ("Constructor not found");
}
if (activationAttributes != null && activationAttributes.Length > 0) {
object newOb = ActivationServices.CreateProxyFromAttributes (type, activationAttributes);
if (newOb != null)
return ctor.Invoke (newOb, bindingAttr, binder, args, culture);
}
return ctor.Invoke (bindingAttr, binder, args, culture);
}
public static object CreateInstance (Type type, bool nonPublic)
{
if (type == null)
throw new ArgumentNullException ("type");
if (type.IsAbstract)
throw new MemberAccessException ("Cannot create an abstract class");
ConstructorInfo ctor = type.GetConstructor (Type.EmptyTypes);
if (ctor != null && !ctor.IsPublic && nonPublic == false)
throw new MissingMethodException ("Default constructor not found");
if (ctor == null) {
if (type.IsValueType)
return CreateInstanceInternal (type);
throw new MissingMethodException ("Default constructor not found");
}
return ctor.Invoke (null);
}
public static object GetObject (Type type, string url)
{
return RemotingServices.Connect (type, url);
}
public static object GetObject (Type type, string url, object state)
{
return RemotingServices.Connect (type, url, state);
}
[MethodImplAttribute(MethodImplOptions.InternalCall)]
private static extern object CreateInstanceInternal (Type type);
}
}
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