Allows empty string for targeting special MethodType options and doesn't try searching for it with AccessTools

Author: Banane9

Harmony/Internal/PatchTools.cs

@@ -90,17 +90,17 @@ internal static MethodBase GetOriginalMethod(this HarmonyMethod attr)
 				switch (attr.methodType)
 				{
 					case MethodType.Normal:
-						if (attr.methodName is null)
+						if (string.IsNullOrEmpty(attr.methodName))
 							return null;
 						return AccessTools.DeclaredMethod(attr.declaringType, attr.methodName, attr.argumentTypes);
 
 					case MethodType.Getter:
-						if (attr.methodName is null)
+						if (string.IsNullOrEmpty(attr.methodName))
 							return AccessTools.DeclaredIndexerGetter(attr.declaringType, attr.argumentTypes);
 						return AccessTools.DeclaredPropertyGetter(attr.declaringType, attr.methodName);
 
 					case MethodType.Setter:
-						if (attr.methodName is null)
+						if (string.IsNullOrEmpty(attr.methodName))
 							return AccessTools.DeclaredIndexerSetter(attr.declaringType, attr.argumentTypes);
 						return AccessTools.DeclaredPropertySetter(attr.declaringType, attr.methodName);
 
@@ -113,14 +113,14 @@ internal static MethodBase GetOriginalMethod(this HarmonyMethod attr)
 							.FirstOrDefault();
 
 					case MethodType.Enumerator:
-						if (attr.methodName is null)
+						if (string.IsNullOrEmpty(attr.methodName))
 							return null;
 						var enumMethod = AccessTools.DeclaredMethod(attr.declaringType, attr.methodName, attr.argumentTypes);
 						return AccessTools.EnumeratorMoveNext(enumMethod);
 
 #if NET45_OR_GREATER || NETSTANDARD || NETCOREAPP
 					case MethodType.Async:
-						if (attr.methodName is null)
+						if (string.IsNullOrEmpty(attr.methodName))
 							return null;
 						var asyncMethod = AccessTools.DeclaredMethod(attr.declaringType, attr.methodName, attr.argumentTypes);
 						return AccessTools.AsyncMoveNext(asyncMethod);

Harmony/Tools/AccessTools.cs

@@ -149,9 +149,9 @@ public static FieldInfo DeclaredField(Type type, string name)
 				FileLog.Debug("AccessTools.DeclaredField: type is null");
 				return null;
 			}
-			if (name is null)
+			if (string.IsNullOrEmpty(name))
 			{
-				FileLog.Debug("AccessTools.DeclaredField: name is null");
+				FileLog.Debug("AccessTools.DeclaredField: name is null/empty");
 				return null;
 			}
 			var fieldInfo = type.GetField(name, allDeclared);
@@ -183,9 +183,9 @@ public static FieldInfo Field(Type type, string name)
 				FileLog.Debug("AccessTools.Field: type is null");
 				return null;
 			}
-			if (name is null)
+			if (string.IsNullOrEmpty(name))
 			{
-				FileLog.Debug("AccessTools.Field: name is null");
+				FileLog.Debug("AccessTools.Field: name is null/empty");
 				return null;
 			}
 			var fieldInfo = FindIncludingBaseTypes(type, t => t.GetField(name, all));
@@ -234,9 +234,9 @@ public static PropertyInfo DeclaredProperty(Type type, string name)
 				FileLog.Debug("AccessTools.DeclaredProperty: type is null");
 				return null;
 			}
-			if (name is null)
+			if (string.IsNullOrEmpty(name))
 			{
-				FileLog.Debug("AccessTools.DeclaredProperty: name is null");
+				FileLog.Debug("AccessTools.DeclaredProperty: name is null/empty");
 				return null;
 			}
 			var property = type.GetProperty(name, allDeclared);
@@ -338,9 +338,9 @@ public static PropertyInfo Property(Type type, string name)
 				FileLog.Debug("AccessTools.Property: type is null");
 				return null;
 			}
-			if (name is null)
+			if (string.IsNullOrEmpty(name))
 			{
-				FileLog.Debug("AccessTools.Property: name is null");
+				FileLog.Debug("AccessTools.Property: name is null/empty");
 				return null;
 			}
 			var property = FindIncludingBaseTypes(type, t => t.GetProperty(name, all));
@@ -446,9 +446,9 @@ public static MethodInfo DeclaredMethod(Type type, string name, Type[] parameter
 				FileLog.Debug("AccessTools.DeclaredMethod: type is null");
 				return null;
 			}
-			if (name is null)
+			if (string.IsNullOrEmpty(name))
 			{
-				FileLog.Debug("AccessTools.DeclaredMethod: name is null");
+				FileLog.Debug("AccessTools.DeclaredMethod: name is null/empty");
 				return null;
 			}
 			MethodInfo result;
@@ -495,9 +495,9 @@ public static MethodInfo Method(Type type, string name, Type[] parameters = null
 				FileLog.Debug("AccessTools.Method: type is null");
 				return null;
 			}
-			if (name is null)
+			if (string.IsNullOrEmpty(name))
 			{
-				FileLog.Debug("AccessTools.Method: name is null");
+				FileLog.Debug("AccessTools.Method: name is null/empty");
 				return null;
 			}
 			MethodInfo result;
@@ -857,9 +857,9 @@ public static Type Inner(Type type, string name)
 				FileLog.Debug("AccessTools.Inner: type is null");
 				return null;
 			}
-			if (name is null)
+			if (string.IsNullOrEmpty(name))
 			{
-				FileLog.Debug("AccessTools.Inner: name is null");
+				FileLog.Debug("AccessTools.Inner: name is null/empty");
 				return null;
 			}
 			return FindIncludingBaseTypes(type, t => t.GetNestedType(name, all));
@@ -1722,7 +1722,6 @@ public static DelegateType MethodDelegate<DelegateType>(string typeColonName, ob
 		{
 			var method = DeclaredMethod(typeColonName);
 			return MethodDelegate<DelegateType>(method, instance, virtualCall);
-
 		}
 
 		/// <summary>Creates a delegate for a given delegate definition, attributed with [<see cref="HarmonyLib.HarmonyDelegate"/>]</summary>