318 lines
8.3 KiB
C#
318 lines
8.3 KiB
C#
// System.Reflection.ParameterInfo
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//
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// Authors:
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// Sean MacIsaac (macisaac@ximian.com)
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// Marek Safar (marek.safar@gmail.com)
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//
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// (C) 2001 Ximian, Inc.
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// Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
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// Copyright 2013 Xamarin, Inc (http://www.xamarin.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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#if !FULL_AOT_RUNTIME
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using System.Reflection.Emit;
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#endif
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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using System.Collections.Generic;
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using System.Text;
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using System.Runtime.Serialization;
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namespace System.Reflection
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{
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[ComVisible (true)]
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[ComDefaultInterfaceAttribute (typeof (_ParameterInfo))]
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[Serializable]
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[ClassInterfaceAttribute (ClassInterfaceType.None)]
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[StructLayout (LayoutKind.Sequential)]
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public partial class ParameterInfo : ICustomAttributeProvider
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#if !MOBILE
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, _ParameterInfo
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#endif
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, IObjectReference
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{
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protected Type ClassImpl;
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protected object DefaultValueImpl;
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protected MemberInfo MemberImpl;
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protected string NameImpl;
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protected int PositionImpl;
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protected ParameterAttributes AttrsImpl;
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internal MarshalAsAttribute marshalAs;
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protected ParameterInfo () {
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}
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public override string ToString() => ClassImpl.FormatTypeName() + " " + Name;
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internal static void FormatParameters (StringBuilder sb, ParameterInfo[] p, CallingConventions callingConvention, bool serialization)
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{
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for (int i = 0; i < p.Length; ++i) {
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if (i > 0)
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sb.Append (", ");
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Type t = p[i].ParameterType;
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string typeName = t.FormatTypeName (serialization);
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// Legacy: Why use "ByRef" for by ref parameters? What language is this?
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// VB uses "ByRef" but it should precede (not follow) the parameter name.
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// Why don't we just use "&"?
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if (t.IsByRef && !serialization) {
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sb.Append (typeName.TrimEnd (new char[] { '&' }));
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sb.Append (" ByRef");
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} else {
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sb.Append (typeName);
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}
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}
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if ((callingConvention & CallingConventions.VarArgs) != 0) {
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if (p.Length > 0)
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sb.Append (", ");
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sb.Append ("...");
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}
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}
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public virtual Type ParameterType {
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get {return ClassImpl;}
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}
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public virtual ParameterAttributes Attributes {
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get {return AttrsImpl;}
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}
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public bool IsIn {
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get {
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return (Attributes & ParameterAttributes.In) != 0;
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}
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}
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#if FEATURE_USE_LCID
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public bool IsLcid {
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get {
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return (Attributes & ParameterAttributes.Lcid) != 0;
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}
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}
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#endif
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public bool IsOptional {
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get {
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return (Attributes & ParameterAttributes.Optional) != 0;
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}
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}
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public bool IsOut {
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get {
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return (Attributes & ParameterAttributes.Out) != 0;
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}
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}
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public bool IsRetval {
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get {
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return (Attributes & ParameterAttributes.Retval) != 0;
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}
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}
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public virtual MemberInfo Member {
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get {return MemberImpl;}
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}
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public virtual string Name {
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get {return NameImpl;}
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}
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public virtual int Position {
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get {return PositionImpl;}
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}
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[MethodImplAttribute (MethodImplOptions.InternalCall)]
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internal extern int GetMetadataToken ();
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internal object[] GetPseudoCustomAttributes () {
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int count = 0;
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if (IsIn)
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count ++;
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if (IsOut)
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count ++;
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if (IsOptional)
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count ++;
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if (marshalAs != null)
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count ++;
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if (count == 0)
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return null;
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object[] attrs = new object [count];
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count = 0;
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if (IsIn)
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attrs [count ++] = new InAttribute ();
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if (IsOptional)
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attrs [count ++] = new OptionalAttribute ();
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if (IsOut)
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attrs [count ++] = new OutAttribute ();
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if (marshalAs != null)
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attrs [count ++] = marshalAs.Copy ();
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return attrs;
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}
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internal CustomAttributeData[] GetPseudoCustomAttributesData ()
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{
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int count = 0;
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if (IsIn)
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count++;
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if (IsOut)
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count++;
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if (IsOptional)
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count++;
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if (marshalAs != null)
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count++;
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if (count == 0)
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return null;
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CustomAttributeData[] attrsData = new CustomAttributeData [count];
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count = 0;
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if (IsIn)
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attrsData [count++] = new CustomAttributeData ((typeof (InAttribute)).GetConstructor (Type.EmptyTypes));
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if (IsOptional)
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attrsData [count++] = new CustomAttributeData ((typeof (OptionalAttribute)).GetConstructor (Type.EmptyTypes));
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if (IsOut)
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attrsData [count++] = new CustomAttributeData ((typeof (OutAttribute)).GetConstructor (Type.EmptyTypes));
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if (marshalAs != null) {
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var ctorArgs = new CustomAttributeTypedArgument[] { new CustomAttributeTypedArgument (typeof (UnmanagedType), marshalAs.Value) };
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attrsData [count++] = new CustomAttributeData (
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(typeof (MarshalAsAttribute)).GetConstructor (new[] { typeof( UnmanagedType) }),
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ctorArgs,
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EmptyArray<CustomAttributeNamedArgument>.Value);//FIXME Get named params
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}
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return attrsData;
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}
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[MethodImplAttribute (MethodImplOptions.InternalCall)]
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internal extern Type[] GetTypeModifiers (bool optional);
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internal object GetDefaultValueImpl ()
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{
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return DefaultValueImpl;
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}
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public virtual IEnumerable<CustomAttributeData> CustomAttributes {
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get { return GetCustomAttributesData (); }
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}
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public virtual bool HasDefaultValue {
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get { throw new NotImplementedException (); }
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}
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#if !MOBILE
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void _ParameterInfo.GetIDsOfNames ([In] ref Guid riid, IntPtr rgszNames, uint cNames, uint lcid, IntPtr rgDispId)
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{
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throw new NotImplementedException ();
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}
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void _ParameterInfo.GetTypeInfo (uint iTInfo, uint lcid, IntPtr ppTInfo)
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{
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throw new NotImplementedException ();
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}
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void _ParameterInfo.GetTypeInfoCount (out uint pcTInfo)
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{
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throw new NotImplementedException ();
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}
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void _ParameterInfo.Invoke (uint dispIdMember, [In] ref Guid riid, uint lcid, short wFlags, IntPtr pDispParams,
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IntPtr pVarResult, IntPtr pExcepInfo, IntPtr puArgErr)
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{
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throw new NotImplementedException ();
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}
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#endif
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public virtual object DefaultValue {
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get { throw new NotImplementedException (); }
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}
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public virtual object RawDefaultValue {
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get { throw new NotImplementedException (); }
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}
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public virtual int MetadataToken {
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get { return 0x8000000; }
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}
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public virtual object[] GetCustomAttributes (bool inherit)
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{
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return new object [0];
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}
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public virtual object[] GetCustomAttributes (Type attributeType, bool inherit)
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{
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return new object [0];
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}
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public object GetRealObject (StreamingContext context)
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{
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throw new NotImplementedException ();
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}
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public virtual bool IsDefined( Type attributeType, bool inherit) {
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return false;
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}
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public virtual Type[] GetRequiredCustomModifiers () {
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return new Type [0];
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}
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public virtual Type[] GetOptionalCustomModifiers () {
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return new Type [0];
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}
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public virtual IList<CustomAttributeData> GetCustomAttributesData () {
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throw new NotImplementedException ();
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}
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#if !FULL_AOT_RUNTIME
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internal static ParameterInfo New (ParameterBuilder pb, Type type, MemberInfo member, int position)
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{
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return new MonoParameterInfo (pb, type, member, position);
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}
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#endif
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internal static ParameterInfo New (ParameterInfo pinfo, Type type, MemberInfo member, int position)
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{
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return new MonoParameterInfo (pinfo, type, member, position);
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}
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internal static ParameterInfo New (ParameterInfo pinfo, MemberInfo member)
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{
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return new MonoParameterInfo (pinfo, member);
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}
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internal static ParameterInfo New (Type type, MemberInfo member, MarshalAsAttribute marshalAs)
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{
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return new MonoParameterInfo (type, member, marshalAs);
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}
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}
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}
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