Dnspy/dnSpy/dnSpy.Decompiler/IL/OriginalInstructionBytesReader.cs

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2021-09-20 18:20:01 +02:00
/*
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 dnlib.DotNet;
using dnlib.IO;
using dnSpy.Contracts.Decompiler;
namespace dnSpy.Decompiler.IL {
sealed class OriginalInstructionBytesReader : IInstructionBytesReader {
readonly bool hasReader;
DataReader reader;
public bool IsOriginalBytes => true;
public OriginalInstructionBytesReader(MethodDef method) {
//TODO: This fails and returns null if it's a CorMethodDef!
//TODO: Support CorModuleDef
if (method.Module is ModuleDefMD m) {
reader = m.Metadata.PEImage.CreateReader(method.RVA + method.Body.HeaderSize);
hasReader = true;
}
}
public int ReadByte() {
if (hasReader)
return reader.ReadByte();
return -1;
}
public void SetInstruction(int index, uint offset) {
if (hasReader)
reader.Position = offset;
}
}
}