コード例 #1
0
ファイル: clrobject.cs プロジェクト: swfiua/pythonnet
        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);
        }
コード例 #2
0
        /// <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);
        }
コード例 #3
0
ファイル: extensiontype.cs プロジェクト: swfiua/pythonnet
        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;
        }
コード例 #4
0
        // 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);
        }
コード例 #5
0
ファイル: typemanager.cs プロジェクト: m6nster/pythonnet
        /// <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);
        }
コード例 #6
0
ファイル: typemanager.cs プロジェクト: zyhong/pythonnet
        /// <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);
        }
コード例 #7
0
        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);
            }
        }
コード例 #8
0
ファイル: classderived.cs プロジェクト: mdengler/pythonnet
        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);
                }
            });
        }
コード例 #9
0
        protected override void OnLoad(InterDomainContext context)
        {
            base.OnLoad(context);
            GCHandle gc = AllocGCHandle(TrackTypes.Wrapper);

            Marshal.WriteIntPtr(pyHandle, ObjectOffset.magic(tpHandle), (IntPtr)gc);
        }
コード例 #10
0
        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);
        }
コード例 #11
0
        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);
        }
コード例 #12
0
ファイル: extensiontype.cs プロジェクト: zjuice/pythonnet
        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);
        }
コード例 #13
0
        /// <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();
        }
コード例 #14
0
        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;
        }
コード例 #15
0
        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();
        }
コード例 #16
0
        /// <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);
        }
コード例 #17
0
ファイル: typemanager.cs プロジェクト: danielldx/pythonnet
        /// <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);
        }
コード例 #18
0
ファイル: managedtype.cs プロジェクト: kod3r/infer.py
        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);
        }
コード例 #19
0
ファイル: typemanager.cs プロジェクト: hansonap/pythonnet
        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);
        }
コード例 #20
0
ファイル: typemanager.cs プロジェクト: zyhong/pythonnet
        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);
        }
コード例 #21
0
ファイル: typemanager.cs プロジェクト: danielldx/pythonnet
        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);
        }
コード例 #22
0
        protected static IntPtr GetObjectDict(IntPtr ob)
        {
            IntPtr type = Runtime.PyObject_TYPE(ob);

            return(Marshal.ReadIntPtr(ob, ObjectOffset.TypeDictOffset(type)));
        }
コード例 #23
0
        protected static void SetObjectDict(IntPtr ob, IntPtr value)
        {
            IntPtr type = Runtime.PyObject_TYPE(ob);

            Marshal.WriteIntPtr(ob, ObjectOffset.TypeDictOffset(type), value);
        }