65 lines
1.9 KiB
C#
65 lines
1.9 KiB
C#
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/*
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Copyright (C) 2014-2019 de4dot@gmail.com
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This file is part of dnSpy
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dnSpy is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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dnSpy is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with dnSpy. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System;
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using System.Collections.Generic;
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using dnlib.DotNet;
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using dnlib.DotNet.Emit;
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using dnSpy.Contracts.Decompiler;
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namespace dnSpy.Decompiler.IL {
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sealed class ModifiedInstructionBytesReader : IInstructionBytesReader {
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readonly ITokenResolver resolver;
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readonly IList<Instruction> instrs;
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int instrIndex;
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readonly List<short> instrBytes = new List<short>(10);
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int byteIndex;
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public bool IsOriginalBytes => false;
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public ModifiedInstructionBytesReader(MethodDef method) {
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resolver = method.Module;
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instrs = method.Body.Instructions;
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}
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public int ReadByte() {
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if (byteIndex >= instrBytes.Count)
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InitializeNextInstruction();
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return instrBytes[byteIndex++];
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}
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void InitializeNextInstruction() {
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if (instrIndex >= instrs.Count)
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throw new InvalidOperationException();
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var instr = instrs[instrIndex++];
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byteIndex = 0;
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instrBytes.Clear();
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InstructionUtils.AddOpCode(instrBytes, instr.OpCode.Code);
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InstructionUtils.AddOperand(instrBytes, resolver, instr.Offset + (uint)instr.OpCode.Size, instr.OpCode, instr.Operand);
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}
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public void SetInstruction(int index, uint offset) {
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instrIndex = index;
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InitializeNextInstruction();
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}
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}
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}
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