2 // ServiceKnownTypeAttribute.cs
5 // Atsushi Enomoto <atsushi@ximian.com>
7 // Copyright (C) 2007 Novell, Inc. http://www.novell.com
9 // Permission is hereby granted, free of charge, to any person obtaining
10 // a copy of this software and associated documentation files (the
11 // "Software"), to deal in the Software without restriction, including
12 // without limitation the rights to use, copy, modify, merge, publish,
13 // distribute, sublicense, and/or sell copies of the Software, and to
14 // permit persons to whom the Software is furnished to do so, subject to
15 // the following conditions:
17 // The above copyright notice and this permission notice shall be
18 // included in all copies or substantial portions of the Software.
20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 using System.Collections.Generic;
30 using System.Reflection;
32 namespace System.ServiceModel {
34 [AttributeUsage (AttributeTargets.Class | AttributeTargets.Method | AttributeTargets.Interface, AllowMultiple = true, Inherited = true)]
35 public sealed class ServiceKnownTypeAttribute : Attribute
37 public ServiceKnownTypeAttribute (string methodName)
38 : this (methodName, null)
42 public ServiceKnownTypeAttribute (Type type)
47 public ServiceKnownTypeAttribute (string methodName, Type declaringType)
49 this.declaring_type = declaringType;
50 this.method = methodName;
54 Type declaring_type, type;
55 MethodInfo method_cached;
57 public string MethodName {
58 get { return method; }
61 public Type DeclaringType {
62 get { return declaring_type; }
69 BindingFlags flags = BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static;
70 static readonly Type [] get_types = new Type [] { typeof (ICustomAttributeProvider) };
72 internal IEnumerable<Type> GetTypes (ICustomAttributeProvider provider)
74 if (method_cached != null)
75 return (IEnumerable<Type>) method_cached.Invoke (null, new object [] {provider});
77 return new Type [] {type};
78 else if (declaring_type == null || method == null)
79 return Type.EmptyTypes;
81 var mi = declaring_type.GetMethod (method, flags, null, get_types, null);
83 throw new InvalidOperationException (String.Format ("ServiceKnownTypeAttribute specifies method {0} in type {1} which does not exist. The method must be static and takes one parameter of type ICustomAttributeProvider", method, declaring_type));
84 if (!typeof (IEnumerable<Type>).IsAssignableFrom (mi.ReturnType))
85 throw new InvalidOperationException (String.Format ("ServiceKnownTypeAttribute specifies method {0} in type {1} which returns {2} object. This attribute expects the method to have IEnumerable<Type> as its return type", method, declaring_type, mi.ReturnType));
87 return GetTypes (provider); // goto top