From 97faed65caf145e6cfb4861ee2e6a76e268e3374 Mon Sep 17 00:00:00 2001
From: Victor Nova <lost@losttech.software>
Date: Thu, 21 Oct 2021 17:20:56 -0700
Subject: [PATCH] remove unused PythonMethodAttribute

fixes https://github.com/pythonnet/pythonnet/issues/1604
---
 src/runtime/interop.cs     | 10 ---------
 src/runtime/typemanager.cs | 39 ---------------------------------
 src/runtime/typemethod.cs  | 45 --------------------------------------
 3 files changed, 94 deletions(-)
 delete mode 100644 src/runtime/typemethod.cs

diff --git a/src/runtime/interop.cs b/src/runtime/interop.cs
index e10348e39..641a188eb 100644
--- a/src/runtime/interop.cs
+++ b/src/runtime/interop.cs
@@ -4,7 +4,6 @@
 using System.Diagnostics;
 using System.Runtime.InteropServices;
 using System.Reflection;
-using System.Text;
 
 namespace Python.Runtime
 {
@@ -31,15 +30,6 @@ public string DocString
         private string docStr;
     }
 
-    [Serializable]
-    [AttributeUsage(AttributeTargets.Method | AttributeTargets.Delegate)]
-    internal class PythonMethodAttribute : Attribute
-    {
-        public PythonMethodAttribute()
-        {
-        }
-    }
-
     [Serializable]
     [AttributeUsage(AttributeTargets.Method | AttributeTargets.Delegate)]
     internal class ModuleFunctionAttribute : Attribute
diff --git a/src/runtime/typemanager.cs b/src/runtime/typemanager.cs
index 7a836bf05..cd4faae73 100644
--- a/src/runtime/typemanager.cs
+++ b/src/runtime/typemanager.cs
@@ -208,8 +208,6 @@ internal static unsafe PyType CreateType(Type impl)
             Runtime.PyDict_SetItem(dict, PyIdentifier.__module__, mod);
             mod.Dispose();
 
-            InitMethods(dict, impl);
-
             dict.Dispose();
 
             // The type has been modified after PyType_Ready has been called
@@ -806,43 +804,6 @@ static void InitializeSlot(IntPtr type, int slotOffset, ThunkInfo thunk, SlotsHo
             }
         }
 
-        /// <summary>
-        /// Given a dict of a newly allocated Python type object and a managed Type that
-        /// implements it, initialize any methods defined by the Type that need
-        /// to appear in the Python type __dict__ (based on custom attribute).
-        /// </summary>
-        private static void InitMethods(BorrowedReference typeDict, Type type)
-        {
-            Type marker = typeof(PythonMethodAttribute);
-
-            BindingFlags flags = BindingFlags.Public | BindingFlags.Static;
-            var addedMethods = new HashSet<string>();
-
-            while (type != null)
-            {
-                MethodInfo[] methods = type.GetMethods(flags);
-                foreach (MethodInfo method in methods)
-                {
-                    if (!addedMethods.Contains(method.Name))
-                    {
-                        object[] attrs = method.GetCustomAttributes(marker, false);
-                        if (attrs.Length > 0)
-                        {
-                            string method_name = method.Name;
-                            var mi = new MethodInfo[1];
-                            mi[0] = method;
-                            MethodObject m = new TypeMethod(type, method_name, mi);
-                            Runtime.PyDict_SetItemString(typeDict, method_name, m.ObjectReference);
-                            m.DecrRefCount();
-                            addedMethods.Add(method_name);
-                        }
-                    }
-                }
-                type = type.BaseType;
-            }
-        }
-
-
         /// <summary>
         /// Utility method to copy slots from a given type to another type.
         /// </summary>
diff --git a/src/runtime/typemethod.cs b/src/runtime/typemethod.cs
deleted file mode 100644
index 4da92613c..000000000
--- a/src/runtime/typemethod.cs
+++ /dev/null
@@ -1,45 +0,0 @@
-using System;
-using System.Reflection;
-
-namespace Python.Runtime
-{
-    /// <summary>
-    /// Implements a Python type that provides access to CLR object methods.
-    /// </summary>
-    internal class TypeMethod : MethodObject
-    {
-        public TypeMethod(Type type, string name, MethodInfo[] info) :
-            base(type, name, info)
-        {
-        }
-
-        public TypeMethod(Type type, string name, MethodInfo[] info, bool allow_threads) :
-            base(type, name, info, allow_threads)
-        {
-        }
-
-        public override IntPtr Invoke(IntPtr ob, IntPtr args, IntPtr kw)
-        {
-            MethodInfo mi = info[0];
-            var arglist = new object[3];
-            arglist[0] = ob;
-            arglist[1] = args;
-            arglist[2] = kw;
-
-            try
-            {
-                object inst = null;
-                if (ob != IntPtr.Zero)
-                {
-                    inst = GetManagedObject(ob);
-                }
-                return (IntPtr)mi.Invoke(inst, BindingFlags.Default, null, arglist, null);
-            }
-            catch (Exception e)
-            {
-                Exceptions.SetError(e);
-                return IntPtr.Zero;
-            }
-        }
-    }
-}

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