2021-09-20 18:20:01 +02:00

89 lines
3.1 KiB
C#

/*
Copyright (C) 2014-2019 de4dot@gmail.com
This file is part of dnSpy
dnSpy is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
dnSpy is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with dnSpy. If not, see <http://www.gnu.org/licenses/>.
*/
using System;
using System.Collections.Generic;
using System.Diagnostics;
using dnlib.DotNet;
using dnlib.DotNet.MD;
namespace dnSpy.Debugger.DotNet.Metadata.Impl.MD {
sealed class DmdEventDefMD : DmdEventDef {
public override string Name { get; }
public override DmdEventAttributes Attributes { get; }
public override DmdType EventHandlerType { get; }
readonly DmdEcma335MetadataReader reader;
public DmdEventDefMD(DmdEcma335MetadataReader reader, uint rid, DmdType declaringType, DmdType reflectedType) : base(rid, declaringType, reflectedType) {
this.reader = reader ?? throw new ArgumentNullException(nameof(reader));
bool b = reader.TablesStream.TryReadEventRow(rid, out var row);
Debug.Assert(b);
Name = reader.StringsStream.ReadNoNull(row.Name);
Attributes = (DmdEventAttributes)row.EventFlags;
if (!CodedToken.TypeDefOrRef.Decode(row.EventType, out uint token))
token = uint.MaxValue;
EventHandlerType = reader.ResolveType((int)token, DeclaringType!.GetGenericArguments(), null, DmdResolveOptions.None) ?? reader.Module.AppDomain.System_Void;
}
protected override void GetMethods(out DmdMethodInfo? addMethod, out DmdMethodInfo? removeMethod, out DmdMethodInfo? raiseMethod, out DmdMethodInfo[]? otherMethods) {
addMethod = null;
removeMethod = null;
raiseMethod = null;
List<DmdMethodInfo>? otherMethodsList = null;
var ridList = reader.Metadata.GetMethodSemanticsRidList(Table.Event, Rid);
for (int i = 0; i < ridList.Count; i++) {
if (!reader.TablesStream.TryReadMethodSemanticsRow(ridList[i], out var row))
continue;
var method = ReflectedType!.GetMethod(Module, 0x06000000 + (int)row.Method) as DmdMethodInfo;
if (method is null)
continue;
switch ((MethodSemanticsAttributes)row.Semantic) {
case MethodSemanticsAttributes.AddOn:
if (addMethod is null)
addMethod = method;
break;
case MethodSemanticsAttributes.RemoveOn:
if (removeMethod is null)
removeMethod = method;
break;
case MethodSemanticsAttributes.Fire:
if (raiseMethod is null)
raiseMethod = method;
break;
case MethodSemanticsAttributes.Other:
if (otherMethodsList is null)
otherMethodsList = new List<DmdMethodInfo>();
otherMethodsList.Add(method);
break;
}
}
otherMethods = otherMethodsList?.ToArray();
}
protected override DmdCustomAttributeData[] CreateCustomAttributes() => reader.ReadCustomAttributes(MetadataToken);
}
}