// Decompiled with JetBrains decompiler
// Type: MindLated.Protection.CtrlFlow.BlockParser
// Assembly: Server, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
// MVID: 33673F0A-7F43-4A2B-BC08-8E59A15CB7DA
// Assembly location: C:\Users\Admin\Desktop\Sheet RAT 2.5\Server.exe

using dnlib.DotNet;
using dnlib.DotNet.Emit;
using System.Collections.Generic;

//#nullable disable
namespace MindLated.Protection.CtrlFlow {

public class BlockParser
{
  public static List<Block> ParseMethod(MethodDef method)
  {
    List<Block> method1 = new List<Block>();
    Block block1 = new Block();
    int num1 = 0;
    int num2 = 0;
    block1.Number = num1;
    block1.Instructions.Add(Instruction.Create(OpCodes.Nop));
    method1.Add(block1);
    Block block2 = new Block();
    Stack<ExceptionHandler> exceptionHandlerStack = new Stack<ExceptionHandler>();
    foreach (Instruction instruction in (IEnumerable<Instruction>) method.Body.Instructions)
    {
      foreach (ExceptionHandler exceptionHandler in (IEnumerable<ExceptionHandler>) method.Body.ExceptionHandlers)
      {
        if (exceptionHandler.HandlerStart == instruction || exceptionHandler.TryStart == instruction || exceptionHandler.FilterStart == instruction)
          exceptionHandlerStack.Push(exceptionHandler);
      }
      foreach (ExceptionHandler exceptionHandler in (IEnumerable<ExceptionHandler>) method.Body.ExceptionHandlers)
      {
        if (exceptionHandler.HandlerEnd == instruction || exceptionHandler.TryEnd == instruction)
          exceptionHandlerStack.Pop();
      }
      int pushes;
      int pops;
      instruction.CalculateStackUsage(out pushes, out pops);
      block2.Instructions.Add(instruction);
      num2 += pushes - pops;
      if (pushes == 0 && instruction.OpCode != OpCodes.Nop && (num2 == 0 || instruction.OpCode == OpCodes.Ret) && exceptionHandlerStack.Count == 0)
      {
        block2.Number = ++num1;
        method1.Add(block2);
        block2 = new Block();
      }
    }
    return method1;
  }
}
}