pythonnet/src/runtime/Types/ClrObject.cs at v3.1.0-rc0 · pythonnet/pythonnet · GitHub

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using System;

using System.Collections.Generic;

using System.Diagnostics;

using System.Runtime.InteropServices;

namespace Python.Runtime

{

[Serializable]

[DebuggerDisplay("clrO: {inst}")]

internal sealed class CLRObject : ManagedType

{

internal readonly object inst;

internal static bool creationBlocked = false;

// "borrowed" references

internal static readonly HashSet<IntPtr> reflectedObjects = new();

static NewReference Create(object ob, BorrowedReference tp)

{

if (creationBlocked)

throw new InvalidOperationException("Reflected objects should not be created anymore.");

Debug.Assert(tp != null);

var py = Runtime.PyType_GenericAlloc(tp, 0);

var self = new CLRObject(ob);

GCHandle gc = GCHandle.Alloc(self);

InitGCHandle(py.Borrow(), type: tp, gc);

bool isNew = reflectedObjects.Add(py.DangerousGetAddress());

Debug.Assert(isNew);

// Fix the BaseException args (and __cause__ in case of Python 3)

// slot if wrapping a CLR exception

if (ob is Exception e) Exceptions.SetArgsAndCause(py.Borrow(), e);

return py;

}

CLRObject(object inst)

{

this.inst = inst;

}

internal static NewReference GetReference(object ob, BorrowedReference pyType)

=> Create(ob, pyType);

internal static NewReference GetReference(object ob, Type type)

{

BorrowedReference cc = ClassManager.GetClass(type);

return Create(ob, cc);

}

internal static NewReference GetReference(object ob)

{

BorrowedReference cc = ClassManager.GetClass(ob.GetType());

return Create(ob, cc);

}

internal static void Restore(object ob, BorrowedReference pyHandle, Dictionary<string, object?> context)

{

var co = new CLRObject(ob);

co.OnLoad(pyHandle, context);

}

protected override void OnLoad(BorrowedReference ob, Dictionary<string, object?>? context)

{

if (creationBlocked)

throw new InvalidOperationException("Reflected objects should not be loaded anymore.");

base.OnLoad(ob, context);

GCHandle gc = GCHandle.Alloc(this);

SetGCHandle(ob, gc);

bool isNew = reflectedObjects.Add(ob.DangerousGetAddress());

Debug.Assert(isNew);

}

pythonnet/src/runtime/Types/ClrObject.cs at v3.1.0-rc0 · pythonnet/pythonnet · GitHub

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