1 // System.Reflection.ParameterInfo
3 // Sean MacIsaac (macisaac@ximian.com)
5 // (C) 2001 Ximian, Inc.
6 // Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
8 // Permission is hereby granted, free of charge, to any person obtaining
9 // a copy of this software and associated documentation files (the
10 // "Software"), to deal in the Software without restriction, including
11 // without limitation the rights to use, copy, modify, merge, publish,
12 // distribute, sublicense, and/or sell copies of the Software, and to
13 // permit persons to whom the Software is furnished to do so, subject to
14 // the following conditions:
16 // The above copyright notice and this permission notice shall be
17 // included in all copies or substantial portions of the Software.
19 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
20 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
22 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
23 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
24 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
25 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 using System.Reflection.Emit;
29 using System.Runtime.CompilerServices;
30 using System.Runtime.InteropServices;
32 namespace System.Reflection
36 [ComDefaultInterfaceAttribute (typeof (_ParameterInfo))]
39 [ClassInterfaceAttribute (ClassInterfaceType.None)]
40 public class ParameterInfo : ICustomAttributeProvider, _ParameterInfo {
42 protected Type ClassImpl;
43 protected object DefaultValueImpl;
44 protected MemberInfo MemberImpl;
45 protected string NameImpl;
46 protected int PositionImpl;
47 protected ParameterAttributes AttrsImpl;
48 private UnmanagedMarshal marshalAs;
50 protected ParameterInfo () {
53 internal ParameterInfo (ParameterBuilder pb, Type type, MemberInfo member, int position) {
54 this.ClassImpl = type;
55 this.MemberImpl = member;
57 this.NameImpl = pb.Name;
58 this.PositionImpl = pb.Position - 1; // ParameterInfo.Position is zero-based
59 this.AttrsImpl = (ParameterAttributes) pb.Attributes;
62 this.PositionImpl = position - 1;
63 this.AttrsImpl = ParameterAttributes.None;
67 /* to build a ParameterInfo for the return type of a method */
68 internal ParameterInfo (Type type, MemberInfo member, UnmanagedMarshal marshalAs) {
69 this.ClassImpl = type;
70 this.MemberImpl = member;
72 this.PositionImpl = -1; // since parameter positions are zero-based, return type pos is -1
73 this.AttrsImpl = ParameterAttributes.Retval;
74 this.marshalAs = marshalAs;
77 public override string ToString() {
78 Type elementType = ClassImpl;
79 while (elementType.HasElementType) {
80 elementType = elementType.GetElementType();
82 bool useShort = elementType.IsPrimitive || ClassImpl == typeof(void)
83 || ClassImpl.Namespace == MemberImpl.DeclaringType.Namespace;
84 string result = useShort
87 // MS.NET seems to skip this check and produce an extra space for return types
95 public virtual Type ParameterType {
96 get {return ClassImpl;}
98 public virtual ParameterAttributes Attributes {
99 get {return AttrsImpl;}
101 public virtual object DefaultValue {
102 get {return DefaultValueImpl;}
108 return (Attributes & ParameterAttributes.In) != 0;
110 return (AttrsImpl & ParameterAttributes.In) != 0;
118 return (Attributes & ParameterAttributes.Lcid) != 0;
120 return (AttrsImpl & ParameterAttributes.Lcid) != 0;
125 public bool IsOptional {
128 return (Attributes & ParameterAttributes.Optional) != 0;
130 return (AttrsImpl & ParameterAttributes.Optional) != 0;
138 return (Attributes & ParameterAttributes.Out) != 0;
140 return (AttrsImpl & ParameterAttributes.Out) != 0;
145 public bool IsRetval {
148 return (Attributes & ParameterAttributes.Retval) != 0;
150 return (AttrsImpl & ParameterAttributes.Retval) != 0;
155 public virtual MemberInfo Member {
156 get {return MemberImpl;}
159 public virtual string Name {
160 get {return NameImpl;}
163 public virtual int Position {
164 get {return PositionImpl;}
167 #if NET_2_0 || BOOTSTRAP_NET_2_0
172 virtual extern int MetadataToken {
173 [MethodImplAttribute (MethodImplOptions.InternalCall)]
177 public virtual object[] GetCustomAttributes (bool inherit)
179 return MonoCustomAttrs.GetCustomAttributes (this, inherit);
182 public virtual object[] GetCustomAttributes (Type attributeType, bool inherit)
184 return MonoCustomAttrs.GetCustomAttributes (this, attributeType, inherit);
187 public virtual bool IsDefined( Type attributeType, bool inherit) {
188 return MonoCustomAttrs.IsDefined (this, attributeType, inherit);
191 internal object[] GetPseudoCustomAttributes () {
200 if (marshalAs != null)
205 object[] attrs = new object [count];
209 attrs [count ++] = new InAttribute ();
211 attrs [count ++] = new OptionalAttribute ();
213 attrs [count ++] = new OutAttribute ();
215 if (marshalAs != null)
216 attrs [count ++] = marshalAs.ToMarshalAsAttribute ();
221 #if NET_2_0 || BOOTSTRAP_NET_2_0
222 [Obsolete ("Use ParameterInfo.GetOptionalCustomModifiers().")]
223 public virtual Type[] OptionalCustomModifiers {
225 return GetOptionalCustomModifiers ();
229 [Obsolete ("Use ParameterInfo.GetRequiredCustomModifiers().")]
230 public virtual Type[] RequiredCustomModifiers {
232 return GetRequiredCustomModifiers ();
237 public virtual Type[] GetOptionalCustomModifiers () {
238 throw new NotImplementedException ();
242 public virtual Type[] GetRequiredCustomModifiers () {
243 throw new NotImplementedException ();
247 public virtual object RawDefaultValue {
249 throw new NotImplementedException ();
255 void _ParameterInfo.GetIDsOfNames ([In] ref Guid riid, IntPtr rgszNames, uint cNames, uint lcid, IntPtr rgDispId)
257 throw new NotImplementedException ();
260 void _ParameterInfo.GetTypeInfo (uint iTInfo, uint lcid, IntPtr ppTInfo)
262 throw new NotImplementedException ();
265 void _ParameterInfo.GetTypeInfoCount (out uint pcTInfo)
267 throw new NotImplementedException ();
270 void _ParameterInfo.Invoke (uint dispIdMember, [In] ref Guid riid, uint lcid, short wFlags, IntPtr pDispParams,
271 IntPtr pVarResult, IntPtr pExcepInfo, IntPtr puArgErr)
273 throw new NotImplementedException ();