// System.Reflection.ParameterInfo
//
// Sean MacIsaac (macisaac@ximian.com)
//
// (C) 2001 Ximian, Inc.
// Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.Reflection.Emit;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Collections.Generic;
namespace System.Reflection{
[ComVisible (true)]
[ComDefaultInterfaceAttribute (typeof (_ParameterInfo))]
[Serializable]
[ClassInterfaceAttribute (ClassInterfaceType.None)]
public class ParameterInfo : ICustomAttributeProvider, _ParameterInfo {
protected Type ClassImpl;
protected object DefaultValueImpl;
protected MemberInfo MemberImpl;
protected string NameImpl;
protected int PositionImpl;
protected ParameterAttributes AttrsImpl;
private UnmanagedMarshal marshalAs;
//ParameterInfo parent;
protected ParameterInfo () {
}
internal ParameterInfo (ParameterBuilder pb, Type type, MemberInfo member, int position) {
this.ClassImpl = type;
this.MemberImpl = member;
if (pb != null) {
this.NameImpl = pb.Name;
this.PositionImpl = pb.Position - 1; // ParameterInfo.Position is zero-based
this.AttrsImpl = (ParameterAttributes) pb.Attributes;
} else {
this.NameImpl = null;
this.PositionImpl = position - 1;
this.AttrsImpl = ParameterAttributes.None;
}
}
/*FIXME this constructor looks very broken in the position parameter*/
internal ParameterInfo (ParameterInfo pinfo, Type type, MemberInfo member, int position) {
this.ClassImpl = type;
this.MemberImpl = member;
if (pinfo != null) {
this.NameImpl = pinfo.Name;
this.PositionImpl = pinfo.Position - 1; // ParameterInfo.Position is zero-based
this.AttrsImpl = (ParameterAttributes) pinfo.Attributes;
} else {
this.NameImpl = null;
this.PositionImpl = position - 1;
this.AttrsImpl = ParameterAttributes.None;
}
}
internal ParameterInfo (ParameterInfo pinfo, MemberInfo member) {
this.ClassImpl = pinfo.ParameterType;
this.MemberImpl = member;
this.NameImpl = pinfo.Name;
this.PositionImpl = pinfo.Position;
this.AttrsImpl = pinfo.Attributes;
//this.parent = pinfo;
}
/* to build a ParameterInfo for the return type of a method */
internal ParameterInfo (Type type, MemberInfo member, UnmanagedMarshal marshalAs) {
this.ClassImpl = type;
this.MemberImpl = member;
this.NameImpl = "";
this.PositionImpl = -1; // since parameter positions are zero-based, return type pos is -1
this.AttrsImpl = ParameterAttributes.Retval;
this.marshalAs = marshalAs;
}
public override string ToString() {
Type elementType = ClassImpl;
while (elementType.HasElementType) {
elementType = elementType.GetElementType();
}
bool useShort = elementType.IsPrimitive || ClassImpl == typeof(void)
|| ClassImpl.Namespace == MemberImpl.DeclaringType.Namespace;
string result = useShort
? ClassImpl.Name
: ClassImpl.FullName;
// MS.NET seems to skip this check and produce an extra space for return types
if (!IsRetval) {
result += ' ';
result += NameImpl;
}
return result;
}
public virtual Type ParameterType {
get {return ClassImpl;}
}
public virtual ParameterAttributes Attributes {
get {return AttrsImpl;}
}
public virtual object DefaultValue {
get {
if (ClassImpl == typeof (Decimal)) {
/* default values for decimals are encoded using a custom attribute */
DecimalConstantAttribute[] attrs = (DecimalConstantAttribute[])GetCustomAttributes (typeof (DecimalConstantAttribute), false);
if (attrs.Length > 0)
return attrs [0].Value;
} else if (ClassImpl == typeof (DateTime)) {
/* default values for DateTime are encoded using a custom attribute */
DateTimeConstantAttribute[] attrs = (DateTimeConstantAttribute[])GetCustomAttributes (typeof (DateTimeConstantAttribute), false);
if (attrs.Length > 0)
return new DateTime (attrs [0].Ticks);
}
return DefaultValueImpl;
}
}
public bool IsIn {
get {
return (Attributes & ParameterAttributes.In) != 0;
}
}
public bool IsLcid {
get {
return (Attributes & ParameterAttributes.Lcid) != 0;
}
}
public bool IsOptional {
get {
return (Attributes & ParameterAttributes.Optional) != 0;
}
}
public bool IsOut {
get {
return (Attributes & ParameterAttributes.Out) != 0;
}
}
public bool IsRetval {
get {
return (Attributes & ParameterAttributes.Retval) != 0;
}
}
public virtual MemberInfo Member {
get {return MemberImpl;}
}
public virtual string Name {
get {return NameImpl;}
}
public virtual int Position {
get {return PositionImpl;}
}
[MethodImplAttribute (MethodImplOptions.InternalCall)]
extern int GetMetadataToken ();
public int MetadataToken {
get {
if (MemberImpl is PropertyInfo) {
PropertyInfo prop = (PropertyInfo)MemberImpl;
MethodInfo mi = prop.GetGetMethod (true);
if (mi == null)
mi = prop.GetSetMethod (true);
/*TODO expose and use a GetParametersNoCopy()*/
return mi.GetParameters () [PositionImpl].MetadataToken;
} else if (MemberImpl is MethodBase) {
return GetMetadataToken ();
}
throw new ArgumentException ("Can't produce MetadataToken for member of type " + MemberImpl.GetType ());
}
}
public virtual object[] GetCustomAttributes (bool inherit)
{
return MonoCustomAttrs.GetCustomAttributes (this, inherit);
}
public virtual object[] GetCustomAttributes (Type attributeType, bool inherit)
{
return MonoCustomAttrs.GetCustomAttributes (this, attributeType, inherit);
}
public virtual bool IsDefined( Type attributeType, bool inherit) {
return MonoCustomAttrs.IsDefined (this, attributeType, inherit);
}
internal object[] GetPseudoCustomAttributes () {
int count = 0;
if (IsIn)
count ++;
if (IsOut)
count ++;
if (IsOptional)
count ++;
if (marshalAs != null)
count ++;
if (count == 0)
return null;
object[] attrs = new object [count];
count = 0;
if (IsIn)
attrs [count ++] = new InAttribute ();
if (IsOptional)
attrs [count ++] = new OptionalAttribute ();
if (IsOut)
attrs [count ++] = new OutAttribute ();
if (marshalAs != null)
attrs [count ++] = marshalAs.ToMarshalAsAttribute ();
return attrs;
}
[MethodImplAttribute (MethodImplOptions.InternalCall)]
extern Type[] GetTypeModifiers (bool optional);
public virtual Type[] GetOptionalCustomModifiers () {
Type[] types = GetTypeModifiers (true);
if (types == null)
return Type.EmptyTypes;
return types;
}
public virtual Type[] GetRequiredCustomModifiers () {
Type[] types = GetTypeModifiers (false);
if (types == null)
return Type.EmptyTypes;
return types;
}
public virtual object RawDefaultValue {
get {
/*FIXME right now DefaultValue doesn't throw for reflection-only assemblies. Change this once the former is fixed.*/
return DefaultValue;
}
}
#if NET_4_0
public virtual IList<CustomAttributeData> GetCustomAttributesData () {
return CustomAttributeData.GetCustomAttributes (this);
}
#endif
void _ParameterInfo.GetIDsOfNames ([In] ref Guid riid, IntPtr rgszNames, uint cNames, uint lcid, IntPtr rgDispId)
{
throw new NotImplementedException ();
}
void _ParameterInfo.GetTypeInfo (uint iTInfo, uint lcid, IntPtr ppTInfo)
{
throw new NotImplementedException ();
}
void _ParameterInfo.GetTypeInfoCount (out uint pcTInfo)
{
throw new NotImplementedException ();
}
void _ParameterInfo.Invoke (uint dispIdMember, [In] ref Guid riid, uint lcid, short wFlags, IntPtr pDispParams,
IntPtr pVarResult, IntPtr pExcepInfo, IntPtr puArgErr)
{
throw new NotImplementedException ();
}
}
}
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