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using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using StardewModdingAPI.Framework.Patching;
using StardewValley;
#if HARMONY_2
using System;
using HarmonyLib;
using StardewModdingAPI.Framework;
#else
using System.Reflection;
using Harmony;
#endif
namespace StardewModdingAPI.Mods.ErrorHandler.Patches
{
/// <summary>A Harmony patch for <see cref="NPC.parseMasterSchedule"/> which intercepts crashes due to invalid schedule data.</summary>
/// <remarks>Patch methods must be static for Harmony to work correctly. See the Harmony documentation before renaming patch arguments.</remarks>
[SuppressMessage("ReSharper", "InconsistentNaming", Justification = "Argument names are defined by Harmony and methods are named for clarity.")]
[SuppressMessage("ReSharper", "IdentifierTypo", Justification = "Argument names are defined by Harmony and methods are named for clarity.")]
internal class ScheduleErrorPatch : IHarmonyPatch
{
/*********
** Fields
*********/
/// <summary>Writes messages to the console and log file on behalf of the game.</summary>
private static IMonitor MonitorForGame;
/*********
** Accessors
*********/
/// <inheritdoc />
public string Name => nameof(ScheduleErrorPatch);
/*********
** Public methods
*********/
/// <summary>Construct an instance.</summary>
/// <param name="monitorForGame">Writes messages to the console and log file on behalf of the game.</param>
public ScheduleErrorPatch(IMonitor monitorForGame)
{
ScheduleErrorPatch.MonitorForGame = monitorForGame;
}
/// <inheritdoc />
#if HARMONY_2
public void Apply(Harmony harmony)
#else
public void Apply(HarmonyInstance harmony)
#endif
{
harmony.Patch(
original: AccessTools.Method(typeof(NPC), nameof(NPC.parseMasterSchedule)),
#if HARMONY_2
finalizer: new HarmonyMethod(this.GetType(), nameof(ScheduleErrorPatch.Finalize_NPC_parseMasterSchedule))
#else
prefix: new HarmonyMethod(this.GetType(), nameof(ScheduleErrorPatch.Before_NPC_parseMasterSchedule))
#endif
);
}
/*********
** Private methods
*********/
#if HARMONY_2
/// <summary>The method to call instead of <see cref="NPC.parseMasterSchedule"/>.</summary>
/// <param name="rawData">The raw schedule data to parse.</param>
/// <param name="__instance">The instance being patched.</param>
/// <param name="__result">The patched method's return value.</param>
/// <param name="__exception">The exception thrown by the wrapped method, if any.</param>
/// <returns>Returns the exception to throw, if any.</returns>
private static Exception Finalize_NPC_parseMasterSchedule(string rawData, NPC __instance, ref Dictionary<int, SchedulePathDescription> __result, Exception __exception)
{
if (__exception != null)
{
ScheduleErrorPatch.MonitorForGame.Log($"Failed parsing schedule for NPC {__instance.Name}:\n{rawData}\n{__exception.GetLogSummary()}", LogLevel.Error);
__result = new Dictionary<int, SchedulePathDescription>();
}
return null;
}
#else
/// <summary>The method to call instead of <see cref="NPC.parseMasterSchedule"/>.</summary>
/// <param name="rawData">The raw schedule data to parse.</param>
/// <param name="__instance">The instance being patched.</param>
/// <param name="__result">The patched method's return value.</param>
/// <param name="__originalMethod">The method being wrapped.</param>
/// <returns>Returns whether to execute the original method.</returns>
private static bool Before_NPC_parseMasterSchedule(string rawData, NPC __instance, ref Dictionary<int, SchedulePathDescription> __result, MethodInfo __originalMethod)
{
const string key = nameof(ScheduleErrorPatch.Before_NPC_parseMasterSchedule);
if (!PatchHelper.StartIntercept(key))
return true;
try
{
__result = (Dictionary<int, SchedulePathDescription>)__originalMethod.Invoke(__instance, new object[] { rawData });
return false;
}
catch (TargetInvocationException ex)
{
ScheduleErrorPatch.MonitorForGame.Log($"Failed parsing schedule for NPC {__instance.Name}:\n{rawData}\n{ex.InnerException ?? ex}", LogLevel.Error);
__result = new Dictionary<int, SchedulePathDescription>();
return false;
}
finally
{
PatchHelper.StopIntercept(key);
}
}
#endif
}
}
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