Files
Torch/Torch.Server/Patches/WorldLoadExceptionPatch.cs
2022-02-04 12:09:17 +07:00

52 lines
1.7 KiB
C#

using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Reflection;
using System.Reflection.Emit;
using NLog;
using Sandbox;
using Torch.Managers.PatchManager;
using Torch.Managers.PatchManager.MSIL;
using Torch.Utils;
namespace Torch.Patches
{
/// <summary>
/// Patches MySandboxGame.InitQuickLaunch to rethrow exceptions caught during session load.
/// </summary>
[PatchShim]
public static class WorldLoadExceptionPatch
{
private static readonly ILogger Log = LogManager.GetCurrentClassLogger();
[ReflectedMethodInfo(typeof(MySandboxGame), "InitQuickLaunch")]
private static MethodInfo _quickLaunchMethod = null!;
public static void Patch(PatchContext ctx)
{
ctx.GetPattern(_quickLaunchMethod).AddTranspiler(nameof(Transpile));
}
private static IEnumerable<MsilInstruction> Transpile(IEnumerable<MsilInstruction> method)
{
var msil = method.ToList();
for (var i = 0; i < msil.Count; i++)
{
var instruction = msil[i];
if (instruction.IsLocalStore() && instruction.Operand is MsilOperandInline.MsilOperandLocal {Value.Index: 19} operand)
{
msil.InsertRange(i + 1, new []
{
operand.Instruction.CopyWith(OpCodes.Ldloc_S),
new MsilInstruction(OpCodes.Call).InlineValue(new Action<Exception>(LogFatal).Method)
});
}
}
return msil;
}
private static void LogFatal(Exception e) => Log.Fatal(e.ToStringDemystified());
}
}