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using System;
using System.Reflection;
using HarmonyLib;
namespace StardewModdingAPI.Internal.Patching
{
/// <summary>Provides base implementation logic for <see cref="IPatcher"/> instances.</summary>
internal abstract class BasePatcher : IPatcher
{
/*********
** Public methods
*********/
/// <inheritdoc />
public abstract void Apply(Harmony harmony, IMonitor monitor);
/*********
** Protected methods
*********/
/// <summary>Get a method and assert that it was found.</summary>
/// <typeparam name="TTarget">The type containing the method.</typeparam>
/// <param name="parameters">The method parameter types, or <c>null</c> if it's not overloaded.</param>
protected ConstructorInfo RequireConstructor<TTarget>(params Type[] parameters)
{
return PatchHelper.RequireConstructor<TTarget>(parameters);
}
/// <summary>Get a method and assert that it was found.</summary>
/// <typeparam name="TTarget">The type containing the method.</typeparam>
/// <param name="name">The method name.</param>
/// <param name="parameters">The method parameter types, or <c>null</c> if it's not overloaded.</param>
/// <param name="generics">The method generic types, or <c>null</c> if it's not generic.</param>
protected MethodInfo RequireMethod<TTarget>(string name, Type[]? parameters = null, Type[]? generics = null)
{
return PatchHelper.RequireMethod<TTarget>(name, parameters, generics);
}
/// <summary>Get a Harmony patch method on the current patcher instance.</summary>
/// <param name="name">The method name.</param>
/// <param name="priority">The patch priority to apply, usually specified using Harmony's <see cref="Priority"/> enum, or <c>null</c> to keep the default value.</param>
protected HarmonyMethod GetHarmonyMethod(string name, int? priority = null)
{
HarmonyMethod method = new(
AccessTools.Method(this.GetType(), name)
?? throw new InvalidOperationException($"Can't find patcher method {PatchHelper.GetMethodString(this.GetType(), name)}.")
);
if (priority.HasValue)
method.priority = priority.Value;
return method;
}
}
}
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