internal CLRObject(Object ob, IntPtr tp) : base()
{
IntPtr py = Runtime.PyType_GenericAlloc(tp, 0);
int flags = (int)Marshal.ReadIntPtr(tp, TypeOffset.tp_flags);
if ((flags & TypeFlags.Subclass) != 0)
{
IntPtr dict = Marshal.ReadIntPtr(py, ObjectOffset.ob_dict);
if (dict == IntPtr.Zero)
{
dict = Runtime.PyDict_New();
Marshal.WriteIntPtr(py, ObjectOffset.ob_dict, dict);
}
}
GCHandle gc = GCHandle.Alloc(this);
Marshal.WriteIntPtr(py, ObjectOffset.magic(), (IntPtr)gc);
this.tpHandle = tp;
this.pyHandle = py;
this.gcHandle = gc;
inst = ob;
//DebugUtil.DumpInst(py);
}
/// <summary>
/// Given a Python object, return the associated managed object or null.
/// </summary>
internal static ManagedType GetManagedObject(IntPtr ob)
{
if (ob != IntPtr.Zero)
{
IntPtr tp = Runtime.PyObject_TYPE(ob);
if (tp == Runtime.PyTypeType || tp == Runtime.PyCLRMetaType)
{
tp = ob;
}
var flags = Util.ReadCLong(tp, TypeOffset.tp_flags);
if ((flags & TypeFlags.Managed) != 0)
{
IntPtr op = tp == ob
? Marshal.ReadIntPtr(tp, TypeOffset.magic())
: Marshal.ReadIntPtr(ob, ObjectOffset.magic(tp));
if (op == IntPtr.Zero)
{
return(null);
}
var gc = (GCHandle)op;
return((ManagedType)gc.Target);
}
}
return(null);
}
public ExtensionType() : base()
{
// Create a new PyObject whose type is a generated type that is
// implemented by the particuar concrete ExtensionType subclass.
// The Python instance object is related to an instance of a
// particular concrete subclass with a hidden CLR gchandle.
IntPtr tp = TypeManager.GetTypeHandle(this.GetType());
// int rc = (int)Marshal.ReadIntPtr(tp, TypeOffset.ob_refcnt);
// if (rc > 1050) {
// DebugUtil.Print("tp is: ", tp);
// DebugUtil.DumpType(tp);
// }
IntPtr py = Runtime.PyType_GenericAlloc(tp, 0);
GCHandle gc = GCHandle.Alloc(this);
Marshal.WriteIntPtr(py, ObjectOffset.magic(), (IntPtr)gc);
// We have to support gc because the type machinery makes it very
// hard not to - but we really don't have a need for it in most
// concrete extension types, so untrack the object to save calls
// from Python into the managed runtime that are pure overhead.
Runtime.PyObject_GC_UnTrack(py);
this.tpHandle = tp;
this.pyHandle = py;
this.gcHandle = gc;
}
// Called from Converter.ToPython for types that are python subclasses of managed types.
// The referenced python object is returned instead of a new wrapper.
internal static IntPtr ToPython(IPythonDerivedType obj)
{
// derived types have a __pyobj__ field that gets set to the python
// object in the overriden constructor
FieldInfo fi = obj.GetType().GetField("__pyobj__");
CLRObject self = (CLRObject)fi.GetValue(obj);
Runtime.Incref(self.pyHandle);
// when the C# constructor creates the python object it starts as a weak
// reference with a reference count of 0. Now we're passing this object
// to Python the reference count needs to be incremented and the reference
// needs to be replaced with a strong reference to stop the C# object being
// collected while Python still has a reference to it.
if (Runtime.Refcount(self.pyHandle) == 1)
{
GCHandle gc = GCHandle.Alloc(self, GCHandleType.Normal);
Marshal.WriteIntPtr(self.pyHandle, ObjectOffset.magic(self.tpHandle), (IntPtr)gc);
self.gcHandle.Free();
self.gcHandle = gc;
// now the object has a python reference it's safe for the python GC to track it
Runtime.PyObject_GC_Track(self.pyHandle);
}
return(self.pyHandle);
}
/// <summary>
/// The following CreateType implementations do the necessary work to
/// create Python types to represent managed extension types, reflected
/// types, subclasses of reflected types and the managed metatype. The
/// dance is slightly different for each kind of type due to different
/// behavior needed and the desire to have the existing Python runtime
/// do as much of the allocation and initialization work as possible.
/// </summary>
internal static IntPtr CreateType(Type impl)
{
IntPtr type = AllocateTypeObject(impl.Name);
int ob_size = ObjectOffset.Size(type);
// Set tp_basicsize to the size of our managed instance objects.
Marshal.WriteIntPtr(type, TypeOffset.tp_basicsize, (IntPtr)ob_size);
var offset = (IntPtr)ObjectOffset.TypeDictOffset(type);
Marshal.WriteIntPtr(type, TypeOffset.tp_dictoffset, offset);
SlotsHolder slotsHolder = CreateSolotsHolder(type);
InitializeSlots(type, impl, slotsHolder);
int flags = TypeFlags.Default | TypeFlags.Managed |
TypeFlags.HeapType | TypeFlags.HaveGC;
Util.WriteCLong(type, TypeOffset.tp_flags, flags);
if (Runtime.PyType_Ready(type) != 0)
{
throw new PythonException();
}
IntPtr dict = Marshal.ReadIntPtr(type, TypeOffset.tp_dict);
IntPtr mod = Runtime.PyString_FromString("CLR");
Runtime.PyDict_SetItem(dict, PyIdentifier.__module__, mod);
Runtime.XDecref(mod);
InitMethods(type, impl);
return(type);
}
/// <summary>
/// The following CreateType implementations do the necessary work to
/// create Python types to represent managed extension types, reflected
/// types, subclasses of reflected types and the managed metatype. The
/// dance is slightly different for each kind of type due to different
/// behavior needed and the desire to have the existing Python runtime
/// do as much of the allocation and initialization work as possible.
/// </summary>
internal static IntPtr CreateType(Type impl)
{
IntPtr type = AllocateTypeObject(impl.Name);
int ob_size = ObjectOffset.Size(type);
// Set tp_basicsize to the size of our managed instance objects.
Marshal.WriteIntPtr(type, TypeOffset.tp_basicsize, (IntPtr)ob_size);
var offset = (IntPtr)ObjectOffset.DictOffset(type);
Marshal.WriteIntPtr(type, TypeOffset.tp_dictoffset, offset);
InitializeSlots(type, impl);
int flags = TypeFlags.Default | TypeFlags.Managed |
TypeFlags.HeapType | TypeFlags.HaveGC;
Util.WriteCLong(type, TypeOffset.tp_flags, flags);
Runtime.PyType_Ready(type);
IntPtr dict = Marshal.ReadIntPtr(type, TypeOffset.tp_dict);
IntPtr mod = Runtime.PyString_FromString("CLR");
Runtime.PyDict_SetItemString(dict, "__module__", mod);
InitMethods(type, impl);
return(type);
}
internal CLRObject(object ob, IntPtr tp)
{
IntPtr py = Runtime.PyType_GenericAlloc(tp, 0);
long flags = Util.ReadCLong(tp, TypeOffset.tp_flags);
if ((flags & TypeFlags.Subclass) != 0)
{
IntPtr dict = Marshal.ReadIntPtr(py, ObjectOffset.TypeDictOffset(tp));
if (dict == IntPtr.Zero)
{
dict = Runtime.PyDict_New();
Marshal.WriteIntPtr(py, ObjectOffset.TypeDictOffset(tp), dict);
}
}
GCHandle gc = GCHandle.Alloc(this);
Marshal.WriteIntPtr(py, ObjectOffset.magic(tp), (IntPtr)gc);
tpHandle = tp;
pyHandle = py;
gcHandle = gc;
inst = ob;
// for performance before calling SetArgsAndCause() lets check if we are an exception
if (inst is Exception)
{
// Fix the BaseException args (and __cause__ in case of Python 3)
// slot if wrapping a CLR exception
Exceptions.SetArgsAndCause(py);
}
}
public static void Finalize(IPythonDerivedType obj)
{
FieldInfo fi = obj.GetType().GetField("__pyobj__");
CLRObject self = (CLRObject)fi.GetValue(obj);
// delete the python object in an asnyc task as we may not be able to acquire
// the GIL immediately and we don't want to block the GC thread.
var t = Task.Factory.StartNew(() =>
{
// If python's been terminated then there's nothing to do
if (0 == Runtime.Py_IsInitialized())
{
return;
}
IntPtr gs = Runtime.PyGILState_Ensure();
try
{
// the C# object is being destroyed which must mean there are no more
// references to the Python object as well so now we can dealloc the
// python object.
IntPtr dict = Marshal.ReadIntPtr(self.pyHandle, ObjectOffset.DictOffset(self.pyHandle));
if (dict != IntPtr.Zero)
{
Runtime.Decref(dict);
}
Runtime.PyObject_GC_Del(self.pyHandle);
self.gcHandle.Free();
}
finally
{
Runtime.PyGILState_Release(gs);
}
});
}
protected override void OnLoad(InterDomainContext context)
{
base.OnLoad(context);
GCHandle gc = AllocGCHandle(TrackTypes.Wrapper);
Marshal.WriteIntPtr(pyHandle, ObjectOffset.magic(tpHandle), (IntPtr)gc);
}
internal CLRObject(object ob, IntPtr tp)
{
System.Diagnostics.Debug.Assert(tp != IntPtr.Zero);
IntPtr py = Runtime.PyType_GenericAlloc(tp, 0);
long flags = Util.ReadCLong(tp, TypeOffset.tp_flags);
if ((flags & TypeFlags.Subclass) != 0)
{
IntPtr dict = Marshal.ReadIntPtr(py, ObjectOffset.TypeDictOffset(tp));
if (dict == IntPtr.Zero)
{
dict = Runtime.PyDict_New();
Marshal.WriteIntPtr(py, ObjectOffset.TypeDictOffset(tp), dict);
}
}
GCHandle gc = AllocGCHandle(TrackTypes.Wrapper);
Marshal.WriteIntPtr(py, ObjectOffset.magic(tp), (IntPtr)gc);
tpHandle = tp;
pyHandle = py;
inst = ob;
// Fix the BaseException args (and __cause__ in case of Python 3)
// slot if wrapping a CLR exception
Exceptions.SetArgsAndCause(py);
}
internal CLRObject(Object ob, IntPtr tp) : base()
{
IntPtr py = Runtime.PyType_GenericAlloc(tp, 0);
int flags = (int)Marshal.ReadIntPtr(tp, TypeOffset.tp_flags);
if ((flags & TypeFlags.Subclass) != 0)
{
IntPtr dict = Marshal.ReadIntPtr(py, ObjectOffset.DictOffset(tp));
if (dict == IntPtr.Zero)
{
dict = Runtime.PyDict_New();
Marshal.WriteIntPtr(py, ObjectOffset.DictOffset(tp), dict);
}
}
GCHandle gc = GCHandle.Alloc(this);
Marshal.WriteIntPtr(py, ObjectOffset.magic(tp), (IntPtr)gc);
this.tpHandle = tp;
this.pyHandle = py;
this.gcHandle = gc;
inst = ob;
// Fix the BaseException args (and __cause__ in case of Python 3)
// slot if wrapping a CLR exception
Exceptions.SetArgsAndCause(py);
}
void SetupGc()
{
GCHandle gc = AllocGCHandle(TrackTypes.Extension);
Marshal.WriteIntPtr(pyHandle, ObjectOffset.magic(tpHandle), (IntPtr)gc);
// We have to support gc because the type machinery makes it very
// hard not to - but we really don't have a need for it in most
// concrete extension types, so untrack the object to save calls
// from Python into the managed runtime that are pure overhead.
Runtime.PyObject_GC_UnTrack(pyHandle);
}
/// <summary>
/// Standard dealloc implementation for instances of reflected types.
/// </summary>
public static void tp_dealloc(IntPtr ob)
{
ManagedType self = GetManagedObject(ob);
IntPtr dict = Marshal.ReadIntPtr(ob, ObjectOffset.TypeDictOffset(self.tpHandle));
if (dict != IntPtr.Zero)
{
Runtime.XDecref(dict);
}
Runtime.PyObject_GC_UnTrack(self.pyHandle);
Runtime.PyObject_GC_Del(self.pyHandle);
Runtime.XDecref(self.tpHandle);
self.gcHandle.Free();
}
new public static void tp_dealloc(IntPtr ob)
{
CLRObject self = (CLRObject)GetManagedObject(ob);
// don't let the python GC destroy this object
Runtime.PyObject_GC_UnTrack(self.pyHandle);
// The python should now have a ref count of 0, but we don't actually want to
// deallocate the object until the C# object that references it is destroyed.
// So we don't call PyObject_GC_Del here and instead we set the python
// reference to a weak reference so that the C# object can be collected.
GCHandle gc = GCHandle.Alloc(self, GCHandleType.Weak);
Marshal.WriteIntPtr(self.pyHandle, ObjectOffset.magic(self.tpHandle), (IntPtr)gc);
self.gcHandle.Free();
self.gcHandle = gc;
}
public ModuleObject(string name)
{
if (name == string.Empty)
{
throw new ArgumentException("Name must not be empty!");
}
moduleName = name;
cache = new Dictionary <string, ManagedType>();
_namespace = name;
// Use the filename from any of the assemblies just so there's something for
// anything that expects __file__ to be set.
var filename = "unknown";
var docstring = "Namespace containing types from the following assemblies:\n\n";
foreach (Assembly a in AssemblyManager.GetAssemblies(name))
{
if (!a.IsDynamic && a.Location != null)
{
filename = a.Location;
}
docstring += "- " + a.FullName + "\n";
}
dict = Runtime.PyDict_New();
IntPtr pyname = Runtime.PyString_FromString(moduleName);
IntPtr pyfilename = Runtime.PyString_FromString(filename);
IntPtr pydocstring = Runtime.PyString_FromString(docstring);
IntPtr pycls = TypeManager.GetTypeHandle(GetType());
Runtime.PyDict_SetItemString(dict, "__name__", pyname);
Runtime.PyDict_SetItemString(dict, "__file__", pyfilename);
Runtime.PyDict_SetItemString(dict, "__doc__", pydocstring);
Runtime.PyDict_SetItemString(dict, "__class__", pycls);
Runtime.XDecref(pyname);
Runtime.XDecref(pyfilename);
Runtime.XDecref(pydocstring);
Marshal.WriteIntPtr(pyHandle, ObjectOffset.DictOffset(pyHandle), dict);
InitializeModuleMembers();
}
/// <summary>
/// The following CreateType implementations do the necessary work to
/// create Python types to represent managed extension types, reflected
/// types, subclasses of reflected types and the managed metatype. The
/// dance is slightly different for each kind of type due to different
/// behavior needed and the desire to have the existing Python runtime
/// do as much of the allocation and initialization work as possible.
/// </summary>
internal static IntPtr CreateType(Type impl)
{
string name = impl.Name;
// Create new names per instance for Dynamic Objects - Arturo Rodriguez
if (impl == typeof(QuantApp.Kernel.JVM.JVMObject) || impl == typeof(System.Dynamic.DynamicObject))
{
name += System.Guid.NewGuid().ToString().Replace("-", "_");
}
IntPtr type = AllocateTypeObject(name);
int ob_size = ObjectOffset.Size(type);
// Set tp_basicsize to the size of our managed instance objects.
Marshal.WriteIntPtr(type, TypeOffset.tp_basicsize, (IntPtr)ob_size);
var offset = (IntPtr)ObjectOffset.DictOffset(type);
Marshal.WriteIntPtr(type, TypeOffset.tp_dictoffset, offset);
InitializeSlots(type, impl);
int flags = TypeFlags.Default | TypeFlags.Managed |
TypeFlags.HeapType | TypeFlags.HaveGC;
Util.WriteCLong(type, TypeOffset.tp_flags, flags);
Runtime.PyType_Ready(type);
IntPtr dict = Marshal.ReadIntPtr(type, TypeOffset.tp_dict);
IntPtr mod = Runtime.PyString_FromString("CLR");
Runtime.PyDict_SetItemString(dict, "__module__", mod);
InitMethods(type, impl);
return(type);
}
/// <summary>
/// The following CreateType implementations do the necessary work to
/// create Python types to represent managed extension types, reflected
/// types, subclasses of reflected types and the managed metatype. The
/// dance is slightly different for each kind of type due to different
/// behavior needed and the desire to have the existing Python runtime
/// do as much of the allocation and initialization work as possible.
/// </summary>
internal static IntPtr CreateType(Type impl)
{
IntPtr type = AllocateTypeObject(impl.Name, metatype: Runtime.PyTypeType);
int ob_size = ObjectOffset.Size(type);
// Set tp_basicsize to the size of our managed instance objects.
Marshal.WriteIntPtr(type, TypeOffset.tp_basicsize, (IntPtr)ob_size);
var offset = (IntPtr)ObjectOffset.TypeDictOffset(type);
Marshal.WriteIntPtr(type, TypeOffset.tp_dictoffset, offset);
SlotsHolder slotsHolder = CreateSolotsHolder(type);
InitializeSlots(type, impl, slotsHolder);
var flags = TypeFlags.Default | TypeFlags.Managed |
TypeFlags.HeapType | TypeFlags.HaveGC;
Util.WriteCLong(type, TypeOffset.tp_flags, (int)flags);
if (Runtime.PyType_Ready(type) != 0)
{
throw new PythonException();
}
var dict = new BorrowedReference(Marshal.ReadIntPtr(type, TypeOffset.tp_dict));
var mod = NewReference.DangerousFromPointer(Runtime.PyString_FromString("CLR"));
Runtime.PyDict_SetItem(dict, PyIdentifier.__module__, mod);
mod.Dispose();
InitMethods(type, impl);
// The type has been modified after PyType_Ready has been called
// Refresh the type
Runtime.PyType_Modified(type);
return(type);
}
internal IntPtr tpHandle; // PyType *
//====================================================================
// Given a Python object, return the associated managed object or null.
//====================================================================
internal static ManagedType GetManagedObject(IntPtr ob)
{
if (ob != IntPtr.Zero)
{
IntPtr tp = Runtime.PyObject_TYPE(ob);
if (tp == Runtime.PyTypeType || tp == Runtime.PyCLRMetaType)
{
tp = ob;
}
int flags = (int)Marshal.ReadIntPtr(tp, TypeOffset.tp_flags);
if ((flags & TypeFlags.Managed) != 0)
{
IntPtr op = (tp == ob) ?
Marshal.ReadIntPtr(tp, TypeOffset.magic()) :
Marshal.ReadIntPtr(ob, ObjectOffset.magic());
GCHandle gc = (GCHandle)op;
return((ManagedType)gc.Target);
}
// In certain situations, we need to recognize a wrapped
// exception class and be willing to unwrap the class :(
if (Runtime.wrap_exceptions)
{
IntPtr e = Exceptions.UnwrapExceptionClass(ob);
if ((e != IntPtr.Zero) && (e != ob))
{
ManagedType m = GetManagedObject(e);
Runtime.Decref(e);
return(m);
}
}
}
return(null);
}
internal static IntPtr CreateType(ManagedType impl, Type clrType)
{
// Cleanup the type name to get rid of funny nested type names.
string name = "CLR." + clrType.FullName;
int i = name.LastIndexOf('+');
if (i > -1)
{
name = name.Substring(i + 1);
}
i = name.LastIndexOf('.');
if (i > -1)
{
name = name.Substring(i + 1);
}
IntPtr base_ = IntPtr.Zero;
int ob_size = ObjectOffset.Size(Runtime.PyTypeType);
// XXX Hack, use a different base class for System.Exception
// Python 2.5+ allows new style class exceptions but they *must*
// subclass BaseException (or better Exception).
if (typeof(Exception).IsAssignableFrom(clrType))
{
ob_size = ObjectOffset.Size(Exceptions.Exception);
}
int tp_dictoffset = ob_size + ManagedDataOffsets.ob_dict;
if (clrType == typeof(Exception))
{
base_ = Exceptions.Exception;
}
else if (clrType.BaseType != null)
{
ClassBase bc = ClassManager.GetClass(clrType.BaseType);
base_ = bc.pyHandle;
}
IntPtr type = AllocateTypeObject(name);
Marshal.WriteIntPtr(type, TypeOffset.ob_type, Runtime.PyCLRMetaType);
Runtime.XIncref(Runtime.PyCLRMetaType);
Marshal.WriteIntPtr(type, TypeOffset.tp_basicsize, (IntPtr)ob_size);
Marshal.WriteIntPtr(type, TypeOffset.tp_itemsize, IntPtr.Zero);
Marshal.WriteIntPtr(type, TypeOffset.tp_dictoffset, (IntPtr)tp_dictoffset);
// add a __len__ slot for inheritors of ICollection and ICollection<>
if (typeof(ICollection).IsAssignableFrom(clrType) || clrType.GetInterfaces().Any(x => x.IsGenericType && x.GetGenericTypeDefinition() == typeof(ICollection <>)))
{
InitializeSlot(type, TypeOffset.mp_length, typeof(mp_length_slot).GetMethod(nameof(mp_length_slot.mp_length)));
}
// we want to do this after the slot stuff above in case the class itself implements a slot method
InitializeSlots(type, impl.GetType());
if (!typeof(IEnumerable).IsAssignableFrom(clrType) &&
!typeof(IEnumerator).IsAssignableFrom(clrType))
{
// The tp_iter slot should only be set for enumerable types.
Marshal.WriteIntPtr(type, TypeOffset.tp_iter, IntPtr.Zero);
}
// Only set mp_subscript and mp_ass_subscript for types with indexers
if (impl is ClassBase cb)
{
if (!(impl is ArrayObject))
{
if (cb.indexer == null || !cb.indexer.CanGet)
{
Marshal.WriteIntPtr(type, TypeOffset.mp_subscript, IntPtr.Zero);
}
if (cb.indexer == null || !cb.indexer.CanSet)
{
Marshal.WriteIntPtr(type, TypeOffset.mp_ass_subscript, IntPtr.Zero);
}
}
}
else
{
Marshal.WriteIntPtr(type, TypeOffset.mp_subscript, IntPtr.Zero);
Marshal.WriteIntPtr(type, TypeOffset.mp_ass_subscript, IntPtr.Zero);
}
if (base_ != IntPtr.Zero)
{
Marshal.WriteIntPtr(type, TypeOffset.tp_base, base_);
Runtime.XIncref(base_);
}
int flags = TypeFlags.Default;
flags |= TypeFlags.Managed;
flags |= TypeFlags.HeapType;
flags |= TypeFlags.BaseType;
flags |= TypeFlags.HaveGC;
Util.WriteCLong(type, TypeOffset.tp_flags, flags);
// Leverage followup initialization from the Python runtime. Note
// that the type of the new type must PyType_Type at the time we
// call this, else PyType_Ready will skip some slot initialization.
Runtime.PyType_Ready(type);
IntPtr dict = Marshal.ReadIntPtr(type, TypeOffset.tp_dict);
string mn = clrType.Namespace ?? "";
IntPtr mod = Runtime.PyString_FromString(mn);
Runtime.PyDict_SetItemString(dict, "__module__", mod);
// Hide the gchandle of the implementation in a magic type slot.
GCHandle gc = GCHandle.Alloc(impl);
Marshal.WriteIntPtr(type, TypeOffset.magic(), (IntPtr)gc);
// Set the handle attributes on the implementing instance.
impl.tpHandle = Runtime.PyCLRMetaType;
impl.gcHandle = gc;
impl.pyHandle = type;
//DebugUtil.DumpType(type);
return(type);
}
internal static IntPtr CreateType(ManagedType impl, Type clrType)
{
// Cleanup the type name to get rid of funny nested type names.
string name = "CLR." + clrType.FullName;
int i = name.LastIndexOf('+');
if (i > -1)
{
name = name.Substring(i + 1);
}
i = name.LastIndexOf('.');
if (i > -1)
{
name = name.Substring(i + 1);
}
IntPtr base_ = IntPtr.Zero;
int ob_size = ObjectOffset.Size(Runtime.PyTypeType);
int tp_dictoffset = ObjectOffset.DictOffset(Runtime.PyTypeType);
// XXX Hack, use a different base class for System.Exception
// Python 2.5+ allows new style class exceptions but they *must*
// subclass BaseException (or better Exception).
if (typeof(Exception).IsAssignableFrom(clrType))
{
ob_size = ObjectOffset.Size(Exceptions.Exception);
tp_dictoffset = ObjectOffset.DictOffset(Exceptions.Exception);
}
if (clrType == typeof(Exception))
{
base_ = Exceptions.Exception;
}
else if (clrType.BaseType != null)
{
ClassBase bc = ClassManager.GetClass(clrType.BaseType);
base_ = bc.pyHandle;
}
IntPtr type = AllocateTypeObject(name);
Marshal.WriteIntPtr(type, TypeOffset.ob_type, Runtime.PyCLRMetaType);
Runtime.XIncref(Runtime.PyCLRMetaType);
Marshal.WriteIntPtr(type, TypeOffset.tp_basicsize, (IntPtr)ob_size);
Marshal.WriteIntPtr(type, TypeOffset.tp_itemsize, IntPtr.Zero);
Marshal.WriteIntPtr(type, TypeOffset.tp_dictoffset, (IntPtr)tp_dictoffset);
InitializeSlots(type, impl.GetType());
if (base_ != IntPtr.Zero)
{
Marshal.WriteIntPtr(type, TypeOffset.tp_base, base_);
Runtime.XIncref(base_);
}
int flags = TypeFlags.Default;
flags |= TypeFlags.Managed;
flags |= TypeFlags.HeapType;
flags |= TypeFlags.BaseType;
flags |= TypeFlags.HaveGC;
Util.WriteCLong(type, TypeOffset.tp_flags, flags);
// Leverage followup initialization from the Python runtime. Note
// that the type of the new type must PyType_Type at the time we
// call this, else PyType_Ready will skip some slot initialization.
Runtime.PyType_Ready(type);
IntPtr dict = Marshal.ReadIntPtr(type, TypeOffset.tp_dict);
string mn = clrType.Namespace ?? "";
IntPtr mod = Runtime.PyString_FromString(mn);
Runtime.PyDict_SetItemString(dict, "__module__", mod);
// Hide the gchandle of the implementation in a magic type slot.
GCHandle gc = GCHandle.Alloc(impl);
Marshal.WriteIntPtr(type, TypeOffset.magic(), (IntPtr)gc);
// Set the handle attributes on the implementing instance.
impl.tpHandle = Runtime.PyCLRMetaType;
impl.gcHandle = gc;
impl.pyHandle = type;
//DebugUtil.DumpType(type);
return(type);
}
internal static IntPtr CreateType(ManagedType impl, Type clrType)
{
// Cleanup the type name to get rid of funny nested type names.
string name = $"clr.{clrType.FullName}";
int i = name.LastIndexOf('+');
if (i > -1)
{
name = name.Substring(i + 1);
}
i = name.LastIndexOf('.');
if (i > -1)
{
name = name.Substring(i + 1);
}
IntPtr base_ = IntPtr.Zero;
int ob_size = ObjectOffset.Size(Runtime.PyTypeType);
// XXX Hack, use a different base class for System.Exception
// Python 2.5+ allows new style class exceptions but they *must*
// subclass BaseException (or better Exception).
if (typeof(Exception).IsAssignableFrom(clrType))
{
ob_size = ObjectOffset.Size(Exceptions.Exception);
}
int tp_dictoffset = ob_size + ManagedDataOffsets.ob_dict;
if (clrType == typeof(Exception))
{
base_ = Exceptions.Exception;
}
else if (clrType.BaseType != null)
{
ClassBase bc = ClassManager.GetClass(clrType.BaseType);
base_ = bc.pyHandle;
}
IntPtr type = AllocateTypeObject(name, Runtime.PyCLRMetaType);
Marshal.WriteIntPtr(type, TypeOffset.ob_type, Runtime.PyCLRMetaType);
Runtime.XIncref(Runtime.PyCLRMetaType);
Marshal.WriteIntPtr(type, TypeOffset.tp_basicsize, (IntPtr)ob_size);
Marshal.WriteIntPtr(type, TypeOffset.tp_itemsize, IntPtr.Zero);
Marshal.WriteIntPtr(type, TypeOffset.tp_dictoffset, (IntPtr)tp_dictoffset);
// we want to do this after the slot stuff above in case the class itself implements a slot method
SlotsHolder slotsHolder = CreateSolotsHolder(type);
InitializeSlots(type, impl.GetType(), slotsHolder);
if (Marshal.ReadIntPtr(type, TypeOffset.mp_length) == IntPtr.Zero &&
mp_length_slot.CanAssign(clrType))
{
InitializeSlot(type, TypeOffset.mp_length, mp_length_slot.Method, slotsHolder);
}
if (!typeof(IEnumerable).IsAssignableFrom(clrType) &&
!typeof(IEnumerator).IsAssignableFrom(clrType))
{
// The tp_iter slot should only be set for enumerable types.
Marshal.WriteIntPtr(type, TypeOffset.tp_iter, IntPtr.Zero);
}
// Only set mp_subscript and mp_ass_subscript for types with indexers
if (impl is ClassBase cb)
{
if (!(impl is ArrayObject))
{
if (cb.indexer == null || !cb.indexer.CanGet)
{
Marshal.WriteIntPtr(type, TypeOffset.mp_subscript, IntPtr.Zero);
}
if (cb.indexer == null || !cb.indexer.CanSet)
{
Marshal.WriteIntPtr(type, TypeOffset.mp_ass_subscript, IntPtr.Zero);
}
}
}
else
{
Marshal.WriteIntPtr(type, TypeOffset.mp_subscript, IntPtr.Zero);
Marshal.WriteIntPtr(type, TypeOffset.mp_ass_subscript, IntPtr.Zero);
}
if (base_ != IntPtr.Zero)
{
Marshal.WriteIntPtr(type, TypeOffset.tp_base, base_);
Runtime.XIncref(base_);
}
const TypeFlags flags = TypeFlags.Default
| TypeFlags.Managed
| TypeFlags.HeapType
| TypeFlags.BaseType
| TypeFlags.HaveGC;
Util.WriteCLong(type, TypeOffset.tp_flags, (int)flags);
OperatorMethod.FixupSlots(type, clrType);
// Leverage followup initialization from the Python runtime. Note
// that the type of the new type must PyType_Type at the time we
// call this, else PyType_Ready will skip some slot initialization.
if (Runtime.PyType_Ready(type) != 0)
{
throw new PythonException();
}
var dict = new BorrowedReference(Marshal.ReadIntPtr(type, TypeOffset.tp_dict));
string mn = clrType.Namespace ?? "";
var mod = NewReference.DangerousFromPointer(Runtime.PyString_FromString(mn));
Runtime.PyDict_SetItem(dict, PyIdentifier.__module__, mod);
mod.Dispose();
// Hide the gchandle of the implementation in a magic type slot.
GCHandle gc = impl.AllocGCHandle();
Marshal.WriteIntPtr(type, TypeOffset.magic(), (IntPtr)gc);
// Set the handle attributes on the implementing instance.
impl.tpHandle = type;
impl.pyHandle = type;
//DebugUtil.DumpType(type);
return(type);
}
protected static IntPtr GetObjectDict(IntPtr ob)
{
IntPtr type = Runtime.PyObject_TYPE(ob);
return(Marshal.ReadIntPtr(ob, ObjectOffset.TypeDictOffset(type)));
}
protected static void SetObjectDict(IntPtr ob, IntPtr value)
{
IntPtr type = Runtime.PyObject_TYPE(ob);
Marshal.WriteIntPtr(ob, ObjectOffset.TypeDictOffset(type), value);
}