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using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using HarmonyLib;
using StardewModdingAPI.Framework.Patching;
using StardewValley.GameData;
using StardewValley.GameData.HomeRenovations;
using StardewValley.GameData.Movies;
namespace StardewModdingAPI.Mods.ErrorHandler.Patches
{
/// <summary>A Harmony patch for <see cref="Dictionary{TKey,TValue}"/> which adds the accessed key to <see cref="KeyNotFoundException"/> exceptions.</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 DictionaryPatches : IHarmonyPatch
{
/*********
** Fields
*********/
/// <summary>Simplifies access to private code.</summary>
private static IReflectionHelper Reflection;
/*********
** Public methods
*********/
/// <summary>Construct an instance.</summary>
/// <param name="reflector">Simplifies access to private code.</param>
public DictionaryPatches(IReflectionHelper reflector)
{
DictionaryPatches.Reflection = reflector;
}
/// <inheritdoc />
public void Apply(Harmony harmony)
{
Type[] keyTypes = { typeof(int), typeof(string) };
Type[] valueTypes = { typeof(int), typeof(string), typeof(HomeRenovation), typeof(MovieData), typeof(SpecialOrderData) };
foreach (Type keyType in keyTypes)
{
foreach (Type valueType in valueTypes)
{
Type dictionaryType = typeof(Dictionary<,>).MakeGenericType(keyType, valueType);
harmony.Patch(
original: AccessTools.Method(dictionaryType, "get_Item"),
finalizer: new HarmonyMethod(this.GetType(), nameof(DictionaryPatches.Finalize_GetItem))
);
}
}
}
/*********
** Private methods
*********/
/// <summary>The method to call after the dictionary indexer throws an exception.</summary>
/// <param name="key">The dictionary key being fetched.</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_GetItem(object key, Exception __exception)
{
if (__exception is KeyNotFoundException)
AddKeyTo(__exception, key?.ToString());
return __exception;
}
/// <summary>Add the accessed key to an exception message.</summary>
/// <param name="exception">The exception to modify.</param>
/// <param name="key">The dictionary key.</param>
private static void AddKeyTo(Exception exception, string key)
{
DictionaryPatches.Reflection
.GetField<string>(exception, "_message")
.SetValue($"{exception.Message}\nkey: '{key}'");
}
}
}
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