|
static private GetInstHandle ( Object ob ) : |
||
| ob | Object | |
| Résultat | ||
/// <summary>
/// SetError Method
/// </summary>
/// <remarks>
/// Sets the current Python exception given a CLR exception
/// object. The CLR exception instance is wrapped as a Python
/// object, allowing it to be handled naturally from Python.
/// </remarks>
public static void SetError(Exception e)
{
// Because delegates allow arbitrary nesting of Python calling
// managed calling Python calling... etc. it is possible that we
// might get a managed exception raised that is a wrapper for a
// Python exception. In that case we'd rather have the real thing.
var pe = e as PythonException;
if (pe != null)
{
Runtime.XIncref(pe.PyType);
Runtime.XIncref(pe.PyValue);
Runtime.XIncref(pe.PyTB);
Runtime.PyErr_Restore(pe.PyType, pe.PyValue, pe.PyTB);
return;
}
IntPtr op = CLRObject.GetInstHandle(e);
IntPtr etype = Runtime.PyObject_GetAttr(op, PyIdentifier.__class__);
Runtime.PyErr_SetObject(new BorrowedReference(etype), new BorrowedReference(op));
Runtime.XDecref(etype);
Runtime.XDecref(op);
}
/// <summary>
/// DelegateObject __new__ implementation. The result of this is a new
/// PyObject whose type is DelegateObject and whose ob_data is a handle
/// to an actual delegate instance. The method wrapped by the actual
/// delegate instance belongs to an object generated to relay the call
/// to the Python callable passed in.
/// </summary>
public static IntPtr tp_new(IntPtr tp, IntPtr args, IntPtr kw)
{
var self = (DelegateObject)GetManagedObject(tp);
if (!self.type.Valid)
{
return(Exceptions.RaiseTypeError(self.type.DeletedMessage));
}
Type type = self.type.Value;
if (Runtime.PyTuple_Size(args) != 1)
{
return(Exceptions.RaiseTypeError("class takes exactly one argument"));
}
IntPtr method = Runtime.PyTuple_GetItem(args, 0);
if (Runtime.PyCallable_Check(method) != 1)
{
return(Exceptions.RaiseTypeError("argument must be callable"));
}
Delegate d = PythonEngine.DelegateManager.GetDelegate(type, method);
return(CLRObject.GetInstHandle(d, self.pyHandle));
}
/// <summary>
/// Set the 'args' slot on a python exception object that wraps
/// a CLR exception. This is needed for pickling CLR exceptions as
/// BaseException_reduce will only check the slots, bypassing the
/// __getattr__ implementation, and thus dereferencing a NULL
/// pointer.
/// </summary>
/// <param name="ob">The python object wrapping </param>
internal static void SetArgsAndCause(IntPtr ob)
{
// e: A CLR Exception
Exception e = ExceptionClassObject.ToException(ob);
if (e == null)
{
return;
}
IntPtr args;
if (!string.IsNullOrEmpty(e.Message))
{
args = Runtime.PyTuple_New(1);
IntPtr msg = Runtime.PyUnicode_FromString(e.Message);
Runtime.PyTuple_SetItem(args, 0, msg);
}
else
{
args = Runtime.PyTuple_New(0);
}
Marshal.WriteIntPtr(ob, ExceptionOffset.args, args);
#if PYTHON3
if (e.InnerException != null)
{
IntPtr cause = CLRObject.GetInstHandle(e.InnerException);
Marshal.WriteIntPtr(ob, ExceptionOffset.cause, cause);
}
#endif
}
/// <summary>
/// SetError Method
/// </summary>
///
/// <remarks>
/// Sets the current Python exception given a CLR exception
/// object. The CLR exception instance is wrapped as a Python
/// object, allowing it to be handled naturally from Python.
/// </remarks>
public static void SetError(Exception e)
{
// Because delegates allow arbitrary nestings of Python calling
// managed calling Python calling... etc. it is possible that we
// might get a managed exception raised that is a wrapper for a
// Python exception. In that case we'd rather have the real thing.
PythonException pe = e as PythonException;
if (pe != null)
{
Runtime.PyErr_SetObject(pe.PyType, pe.PyValue);
return;
}
IntPtr op = CLRObject.GetInstHandle(e);
// XXX - hack to raise a compatible old-style exception ;(
if (Runtime.wrap_exceptions)
{
op = GetExceptionInstanceWrapper(op);
}
IntPtr etype = Runtime.PyObject_GetAttrString(op, "__class__");
Runtime.PyErr_SetObject(etype, op);
Runtime.Decref(etype);
Runtime.Decref(op);
}
/// <summary>
/// Implements __new__ for reflected classes and value types.
/// </summary>
public static IntPtr tp_new(IntPtr tp, IntPtr args, IntPtr kw)
{
var self = GetManagedObject(tp) as ClassObject;
// Sanity check: this ensures a graceful error if someone does
// something intentially wrong like use the managed metatype for
// a class that is not really derived from a managed class.
if (self == null)
{
return(Exceptions.RaiseTypeError("invalid object"));
}
Type type = self.type;
// Primitive types do not have constructors, but they look like
// they do from Python. If the ClassObject represents one of the
// convertible primitive types, just convert the arg directly.
if (type.IsPrimitive || type == typeof(string))
{
if (Runtime.PyTuple_Size(args) != 1)
{
Exceptions.SetError(Exceptions.TypeError, "no constructors match given arguments");
return(IntPtr.Zero);
}
IntPtr op = Runtime.PyTuple_GetItem(args, 0);
object result;
if (!Converter.ToManaged(op, type, out result, true))
{
return(IntPtr.Zero);
}
return(CLRObject.GetInstHandle(result, tp));
}
if (type.IsAbstract)
{
Exceptions.SetError(Exceptions.TypeError, "cannot instantiate abstract class");
return(IntPtr.Zero);
}
if (type.IsEnum)
{
Exceptions.SetError(Exceptions.TypeError, "cannot instantiate enumeration");
return(IntPtr.Zero);
}
object obj = self.binder.InvokeRaw(IntPtr.Zero, args, kw);
if (obj == null)
{
return(IntPtr.Zero);
}
return(CLRObject.GetInstHandle(obj, tp));
}
public static IntPtr tp_new(IntPtr tpRaw, IntPtr args, IntPtr kw)
{
if (kw != IntPtr.Zero)
{
return(Exceptions.RaiseTypeError("array constructor takes no keyword arguments"));
}
var tp = new BorrowedReference(tpRaw);
var self = GetManagedObject(tp) as ArrayObject;
if (!self.type.Valid)
{
return(Exceptions.RaiseTypeError(self.type.DeletedMessage));
}
Type arrType = self.type.Value;
long[] dimensions = new long[Runtime.PyTuple_Size(args)];
if (dimensions.Length == 0)
{
return(Exceptions.RaiseTypeError("array constructor requires at least one integer argument or an object convertible to array"));
}
if (dimensions.Length != 1)
{
return(CreateMultidimensional(arrType.GetElementType(), dimensions,
shapeTuple: new BorrowedReference(args),
pyType: tp)
.DangerousMoveToPointerOrNull());
}
IntPtr op = Runtime.PyTuple_GetItem(args, 0);
// create single dimensional array
if (Runtime.PyInt_Check(op))
{
dimensions[0] = Runtime.PyLong_AsSignedSize_t(op);
if (dimensions[0] == -1 && Exceptions.ErrorOccurred())
{
Exceptions.Clear();
}
else
{
return(NewInstance(arrType.GetElementType(), tp, dimensions)
.DangerousMoveToPointerOrNull());
}
}
object result;
// this implements casting to Array[T]
if (!Converter.ToManaged(op, arrType, out result, true))
{
return(IntPtr.Zero);
}
return(CLRObject.GetInstHandle(result, tp)
.DangerousGetAddress());
}
/// <summary>
/// FromManagedObject Method
/// </summary>
/// <remarks>
/// Given an arbitrary managed object, return a Python instance that
/// reflects the managed object.
/// </remarks>
public static PyObject FromManagedObject(object ob)
{
// Special case: if ob is null, we return None.
if (ob == null)
{
Runtime.XIncref(Runtime.PyNone);
return(new PyObject(Runtime.PyNone));
}
IntPtr op = CLRObject.GetInstHandle(ob);
return(new PyObject(op));
}
public static IntPtr tp_new(IntPtr tp, IntPtr args, IntPtr kw)
{
var self = GetManagedObject(tp) as ArrayObject;
if (Runtime.Interop.PyTuple_Size(args) != 1)
{
return(Exceptions.RaiseTypeError("array expects 1 argument"));
}
IntPtr op = Runtime.Interop.PyTuple_GetItem(args, 0);
object result;
if (!Converter.ToManaged(op, self.type, out result, true))
{
return(IntPtr.Zero);
}
return(CLRObject.GetInstHandle(result, tp));
}
/// <summary>
/// Implements __new__ for reflected interface types.
/// </summary>
public static IntPtr tp_new(IntPtr tp, IntPtr args, IntPtr kw)
{
var self = (InterfaceObject)GetManagedObject(tp);
if (!self.type.Valid)
{
return(Exceptions.RaiseTypeError(self.type.DeletedMessage));
}
var nargs = Runtime.PyTuple_Size(args);
Type type = self.type.Value;
object obj;
if (nargs == 1)
{
IntPtr inst = Runtime.PyTuple_GetItem(args, 0);
var co = GetManagedObject(inst) as CLRObject;
if (co == null || !type.IsInstanceOfType(co.inst))
{
Exceptions.SetError(Exceptions.TypeError, $"object does not implement {type.Name}");
return(IntPtr.Zero);
}
obj = co.inst;
}
else if (nargs == 0 && self.ctor != null)
{
obj = self.ctor.Invoke(null);
if (obj == null || !type.IsInstanceOfType(obj))
{
Exceptions.SetError(Exceptions.TypeError, "CoClass default constructor failed");
return(IntPtr.Zero);
}
}
else
{
Exceptions.SetError(Exceptions.TypeError, "interface takes exactly one argument");
return(IntPtr.Zero);
}
return(CLRObject.GetInstHandle(obj, self.pyHandle));
}
//====================================================================
// Implements __new__ for reflected interface types.
//====================================================================
public static IntPtr tp_new(IntPtr tp, IntPtr args, IntPtr kw)
{
InterfaceObject self = (InterfaceObject)GetManagedObject(tp);
int nargs = Runtime.PyTuple_Size(args);
Type type = self.type;
Object obj;
if (nargs == 1)
{
IntPtr inst = Runtime.PyTuple_GetItem(args, 0);
CLRObject co = GetManagedObject(inst) as CLRObject;
if ((co == null) || (!type.IsInstanceOfType(co.inst)))
{
string msg = "object does not implement " + type.Name;
Exceptions.SetError(Exceptions.TypeError, msg);
return(IntPtr.Zero);
}
obj = co.inst;
}
else if ((nargs == 0) && (self.ctor != null))
{
obj = self.ctor.Invoke(null);
if (obj == null || !type.IsInstanceOfType(obj))
{
Exceptions.SetError(Exceptions.TypeError,
"CoClass default constructor failed"
);
return(IntPtr.Zero);
}
}
else
{
Exceptions.SetError(Exceptions.TypeError,
"interface takes exactly one argument"
);
return(IntPtr.Zero);
}
return(CLRObject.GetInstHandle(obj, self.pyHandle));
}
public static IntPtr tp_new(IntPtr tp, IntPtr args, IntPtr kw)
{
DelegateObject self = (DelegateObject)GetManagedObject(tp);
if (Runtime.PyTuple_Size(args) != 1)
{
string message = "class takes exactly one argument";
return(Exceptions.RaiseTypeError(message));
}
IntPtr method = Runtime.PyTuple_GetItem(args, 0);
if (Runtime.PyCallable_Check(method) != 1)
{
return(Exceptions.RaiseTypeError("argument must be callable"));
}
Delegate d = DelegateManager.GetDelegate(self.type, method);
return(CLRObject.GetInstHandle(d, self.pyHandle));
}
/// <summary>
/// Expose the wrapped implementation through attributes in both
/// converted/encoded (__implementation__) and raw (__raw_implementation__) form.
/// </summary>
public static IntPtr tp_getattro(IntPtr ob, IntPtr key)
{
var clrObj = (CLRObject)GetManagedObject(ob);
if (!Runtime.PyString_Check(key))
{
return(Exceptions.RaiseTypeError("string expected"));
}
string name = Runtime.GetManagedString(key);
if (name == "__implementation__")
{
return(Converter.ToPython(clrObj.inst));
}
else if (name == "__raw_implementation__")
{
return(CLRObject.GetInstHandle(clrObj.inst));
}
return(Runtime.PyObject_GenericGetAttr(ob, key));
}
/// <summary>
/// BoundContructor.__call__(PyObject *callable_object, PyObject *args, PyObject *kw)
/// </summary>
/// <param name="op"> PyObject *callable_object </param>
/// <param name="args"> PyObject *args </param>
/// <param name="kw"> PyObject *kw </param>
/// <returns> A reference to a new instance of the class by invoking the selected ctor(). </returns>
public static IntPtr tp_call(IntPtr op, IntPtr args, IntPtr kw)
{
var self = (BoundContructor)GetManagedObject(op);
// Even though a call with null ctorInfo just produces the old behavior
/*if (self.ctorInfo == null) {
* string msg = "Usage: Class.Overloads[CLR_or_python_Type, ...]";
* return Exceptions.RaiseTypeError(msg);
* }*/
// Bind using ConstructorBinder.Bind and invoke the ctor providing a null instancePtr
// which will fire self.ctorInfo using ConstructorInfo.Invoke().
object obj = self.ctorBinder.InvokeRaw(IntPtr.Zero, args, kw, self.ctorInfo);
if (obj == null)
{
// XXX set an error
return(IntPtr.Zero);
}
// Instantiate the python object that wraps the result of the method call
// and return the PyObject* to it.
return(CLRObject.GetInstHandle(obj, self.pyTypeHndl));
}
/// <summary>
/// Wrap the given object in an interface object, so that only methods
/// of the interface are available.
/// </summary>
public IntPtr WrapObject(object impl)
{
var objPtr = CLRObject.GetInstHandle(impl, pyHandle);
return(objPtr);
}
internal static IntPtr ToPython(object value, Type type)
{
if (value is PyObject)
{
IntPtr handle = ((PyObject)value).Handle;
Runtime.XIncref(handle);
return(handle);
}
IntPtr result = IntPtr.Zero;
// Null always converts to None in Python.
if (value == null)
{
result = Runtime.PyNone;
Runtime.XIncref(result);
return(result);
}
if (value is IList && value.GetType().IsGenericType)
{
using (var resultlist = new PyList())
{
foreach (object o in (IEnumerable)value)
{
using (var p = new PyObject(ToPython(o, o?.GetType())))
{
resultlist.Append(p);
}
}
Runtime.XIncref(resultlist.Handle);
return(resultlist.Handle);
}
}
// it the type is a python subclass of a managed type then return the
// underlying python object rather than construct a new wrapper object.
var pyderived = value as IPythonDerivedType;
if (null != pyderived)
{
#if NETSTANDARD || NETCOREAPP
return(ClassDerivedObject.ToPython(pyderived));
#else
// if object is remote don't do this
if (!System.Runtime.Remoting.RemotingServices.IsTransparentProxy(pyderived))
{
return(ClassDerivedObject.ToPython(pyderived));
}
#endif
}
// hmm - from Python, we almost never care what the declared
// type is. we'd rather have the object bound to the actual
// implementing class.
type = value.GetType();
TypeCode tc = Type.GetTypeCode(type);
switch (tc)
{
case TypeCode.Object:
return(CLRObject.GetInstHandle(value, type));
case TypeCode.String:
return(Runtime.PyUnicode_FromString((string)value));
case TypeCode.Int32:
return(Runtime.PyInt_FromInt32((int)value));
case TypeCode.Boolean:
if ((bool)value)
{
Runtime.XIncref(Runtime.PyTrue);
return(Runtime.PyTrue);
}
Runtime.XIncref(Runtime.PyFalse);
return(Runtime.PyFalse);
case TypeCode.Byte:
return(Runtime.PyInt_FromInt32((int)((byte)value)));
case TypeCode.Char:
return(Runtime.Interop.PyUnicode_FromOrdinal((int)((char)value)));
case TypeCode.Int16:
return(Runtime.PyInt_FromInt32((int)((short)value)));
case TypeCode.Int64:
return(Runtime.Interop.PyLong_FromLongLong((long)value));
case TypeCode.Single:
// return Runtime.PyFloat_FromDouble((double)((float)value));
string ss = ((float)value).ToString(nfi);
IntPtr ps = Runtime.PyString_FromString(ss);
IntPtr op = Runtime.Interop.PyFloat_FromString(ps, IntPtr.Zero);
Runtime.XDecref(ps);
return(op);
case TypeCode.Double:
return(Runtime.Interop.PyFloat_FromDouble((double)value));
case TypeCode.SByte:
return(Runtime.PyInt_FromInt32((int)((sbyte)value)));
case TypeCode.UInt16:
return(Runtime.PyInt_FromInt32((int)((ushort)value)));
case TypeCode.UInt32:
return(Runtime.Interop.PyLong_FromUnsignedLong((uint)value));
case TypeCode.UInt64:
return(Runtime.Interop.PyLong_FromUnsignedLongLong((ulong)value));
default:
if (value is IEnumerable)
{
using (var resultlist = new PyList())
{
foreach (object o in (IEnumerable)value)
{
using (var p = new PyObject(ToPython(o, o?.GetType())))
{
resultlist.Append(p);
}
}
Runtime.XIncref(resultlist.Handle);
return(resultlist.Handle);
}
}
result = CLRObject.GetInstHandle(value, type);
return(result);
}
}
internal static IntPtr ToPython(object value, Type type)
{
if (value is PyObject)
{
IntPtr handle = ((PyObject)value).Handle;
Runtime.XIncref(handle);
return(handle);
}
IntPtr result = IntPtr.Zero;
// Null always converts to None in Python.
if (value == null)
{
result = Runtime.PyNone;
Runtime.XIncref(result);
return(result);
}
if (Type.GetTypeCode(type) == TypeCode.Object && value.GetType() != typeof(object))
{
var encoded = PyObjectConversions.TryEncode(value, type);
if (encoded != null)
{
result = encoded.Handle;
Runtime.XIncref(result);
return(result);
}
}
if (value is IList && !(value is INotifyPropertyChanged) && value.GetType().IsGenericType)
{
using (var resultlist = new PyList())
{
foreach (object o in (IEnumerable)value)
{
using (var p = new PyObject(ToPython(o, o?.GetType())))
{
resultlist.Append(p);
}
}
Runtime.XIncref(resultlist.Handle);
return(resultlist.Handle);
}
}
if (type.IsInterface)
{
var ifaceObj = (InterfaceObject)ClassManager.GetClass(type);
return(ifaceObj.WrapObject(value));
}
// We need to special case interface array handling to ensure we
// produce the correct type. Value may be an array of some concrete
// type (FooImpl[]), but we want access to go via the interface type
// (IFoo[]).
if (type.IsArray && type.GetElementType().IsInterface)
{
return(CLRObject.GetInstHandle(value, type));
}
// it the type is a python subclass of a managed type then return the
// underlying python object rather than construct a new wrapper object.
var pyderived = value as IPythonDerivedType;
if (null != pyderived)
{
if (!IsTransparentProxy(pyderived))
{
return(ClassDerivedObject.ToPython(pyderived));
}
}
// hmm - from Python, we almost never care what the declared
// type is. we'd rather have the object bound to the actual
// implementing class.
type = value.GetType();
TypeCode tc = Type.GetTypeCode(type);
switch (tc)
{
case TypeCode.Object:
return(CLRObject.GetInstHandle(value, type));
case TypeCode.String:
return(Runtime.PyUnicode_FromString((string)value));
case TypeCode.Int32:
return(Runtime.PyInt_FromInt32((int)value));
case TypeCode.Boolean:
if ((bool)value)
{
Runtime.XIncref(Runtime.PyTrue);
return(Runtime.PyTrue);
}
Runtime.XIncref(Runtime.PyFalse);
return(Runtime.PyFalse);
case TypeCode.Byte:
return(Runtime.PyInt_FromInt32((int)((byte)value)));
case TypeCode.Char:
return(Runtime.PyUnicode_FromOrdinal((int)((char)value)));
case TypeCode.Int16:
return(Runtime.PyInt_FromInt32((int)((short)value)));
case TypeCode.Int64:
return(Runtime.PyLong_FromLongLong((long)value));
case TypeCode.Single:
// return Runtime.PyFloat_FromDouble((double)((float)value));
string ss = ((float)value).ToString(nfi);
IntPtr ps = Runtime.PyString_FromString(ss);
IntPtr op = Runtime.PyFloat_FromString(ps, IntPtr.Zero);
Runtime.XDecref(ps);
return(op);
case TypeCode.Double:
return(Runtime.PyFloat_FromDouble((double)value));
case TypeCode.SByte:
return(Runtime.PyInt_FromInt32((int)((sbyte)value)));
case TypeCode.UInt16:
return(Runtime.PyInt_FromInt32((int)((ushort)value)));
case TypeCode.UInt32:
return(Runtime.PyLong_FromUnsignedLong((uint)value));
case TypeCode.UInt64:
return(Runtime.PyLong_FromUnsignedLongLong((ulong)value));
default:
if (value is IEnumerable)
{
using (var resultlist = new PyList())
{
foreach (object o in (IEnumerable)value)
{
using (var p = new PyObject(ToPython(o, o?.GetType())))
{
resultlist.Append(p);
}
}
Runtime.XIncref(resultlist.Handle);
return(resultlist.Handle);
}
}
result = CLRObject.GetInstHandle(value, type);
return(result);
}
}
internal static IntPtr ToPython(object?value, Type type)
{
if (value is PyObject)
{
IntPtr handle = ((PyObject)value).Handle;
Runtime.XIncref(handle);
return(handle);
}
IntPtr result = IntPtr.Zero;
// Null always converts to None in Python.
if (value == null)
{
result = Runtime.PyNone;
Runtime.XIncref(result);
return(result);
}
if (EncodableByUser(type, value))
{
var encoded = PyObjectConversions.TryEncode(value, type);
if (encoded != null)
{
result = encoded.Handle;
Runtime.XIncref(result);
return(result);
}
}
if (type.IsInterface)
{
var ifaceObj = (InterfaceObject)ClassManager.GetClass(type);
return(ifaceObj.WrapObject(value));
}
if (type.IsArray || type.IsEnum)
{
return(CLRObject.GetInstHandle(value, type));
}
// it the type is a python subclass of a managed type then return the
// underlying python object rather than construct a new wrapper object.
var pyderived = value as IPythonDerivedType;
if (null != pyderived)
{
if (!IsTransparentProxy(pyderived))
{
return(ClassDerivedObject.ToPython(pyderived));
}
}
// ModuleObjects are created in a way that their wrapping them as
// a CLRObject fails, the ClassObject has no tpHandle. Return the
// pyHandle as is, do not convert.
if (value is ModuleObject modobj)
{
var handle = modobj.pyHandle;
Runtime.XIncref(handle);
return(handle);
}
// hmm - from Python, we almost never care what the declared
// type is. we'd rather have the object bound to the actual
// implementing class.
type = value.GetType();
if (type.IsEnum)
{
return(CLRObject.GetInstHandle(value, type));
}
TypeCode tc = Type.GetTypeCode(type);
switch (tc)
{
case TypeCode.Object:
return(CLRObject.GetInstHandle(value, type));
case TypeCode.String:
return(Runtime.PyString_FromString((string)value));
case TypeCode.Int32:
return(Runtime.PyInt_FromInt32((int)value));
case TypeCode.Boolean:
if ((bool)value)
{
Runtime.XIncref(Runtime.PyTrue);
return(Runtime.PyTrue);
}
Runtime.XIncref(Runtime.PyFalse);
return(Runtime.PyFalse);
case TypeCode.Byte:
return(Runtime.PyInt_FromInt32((byte)value));
case TypeCode.Char:
return(Runtime.PyUnicode_FromOrdinal((int)((char)value)));
case TypeCode.Int16:
return(Runtime.PyInt_FromInt32((short)value));
case TypeCode.Int64:
return(Runtime.PyLong_FromLongLong((long)value).DangerousMoveToPointerOrNull());
case TypeCode.Single:
return(Runtime.PyFloat_FromDouble((float)value));
case TypeCode.Double:
return(Runtime.PyFloat_FromDouble((double)value));
case TypeCode.SByte:
return(Runtime.PyInt_FromInt32((sbyte)value));
case TypeCode.UInt16:
return(Runtime.PyInt_FromInt32((ushort)value));
case TypeCode.UInt32:
return(Runtime.PyLong_FromUnsignedLongLong((uint)value).DangerousMoveToPointerOrNull());
case TypeCode.UInt64:
return(Runtime.PyLong_FromUnsignedLongLong((ulong)value).DangerousMoveToPointerOrNull());
default:
return(CLRObject.GetInstHandle(value, type));
}
}
//====================================================================
// Implements __new__ for reflected classes and value types.
//====================================================================
public static IntPtr tp_new(IntPtr tp, IntPtr args, IntPtr kw)
{
ClassObject self = GetManagedObject(tp) as ClassObject;
// Sanity check: this ensures a graceful error if someone does
// something intentially wrong like use the managed metatype for
// a class that is not really derived from a managed class.
if (self == null)
{
return(Exceptions.RaiseTypeError("invalid object"));
}
Type type = self.type;
// Primitive types do not have constructors, but they look like
// they do from Python. If the ClassObject represents one of the
// convertible primitive types, just convert the arg directly.
if (type.IsPrimitive || type == typeof(String))
{
if (Runtime.PyTuple_Size(args) != 1)
{
Exceptions.SetError(Exceptions.TypeError,
"no constructors match given arguments"
);
return(IntPtr.Zero);
}
IntPtr op = Runtime.PyTuple_GetItem(args, 0);
Object result;
if (!Converter.ToManaged(op, type, out result, true))
{
return(IntPtr.Zero);
}
return(CLRObject.GetInstHandle(result, tp));
}
if (type.IsAbstract)
{
Exceptions.SetError(Exceptions.TypeError,
"cannot instantiate abstract class"
);
return(IntPtr.Zero);
}
if (type.IsEnum)
{
Exceptions.SetError(Exceptions.TypeError,
"cannot instantiate enumeration"
);
return(IntPtr.Zero);
}
Object obj = self.binder.InvokeRaw(IntPtr.Zero, args, kw);
if (obj == null)
{
// It is possible for __new__ to be invoked on construction
// of a Python subclass of a managed class, so args may
// reflect more args than are required to instantiate the
// class. So if we cant find a ctor that matches, we'll see
// if there is a default constructor and, if so, assume that
// any extra args are intended for the subclass' __init__.
IntPtr eargs = Runtime.PyTuple_New(0);
obj = self.binder.InvokeRaw(IntPtr.Zero, eargs, kw);
Runtime.Decref(eargs);
if (obj == null)
{
return(IntPtr.Zero);
}
}
return(CLRObject.GetInstHandle(obj, tp));
}
internal static IntPtr ToPython(object value, Type type)
{
if (value is PyObject)
{
IntPtr handle = ((PyObject)value).Handle;
Runtime.XIncref(handle);
return(handle);
}
IntPtr result = IntPtr.Zero;
// Null always converts to None in Python.
if (value == null)
{
result = Runtime.PyNone;
Runtime.XIncref(result);
return(result);
}
if (Type.GetTypeCode(type) == TypeCode.Object && value.GetType() != typeof(object))
{
var encoded = PyObjectConversions.TryEncode(value, type);
if (encoded != null)
{
result = encoded.Handle;
Runtime.XIncref(result);
return(result);
}
}
if (value is IList && !(value is INotifyPropertyChanged) && value.GetType().IsGenericType)
{
using (var resultlist = new PyList())
{
foreach (object o in (IEnumerable)value)
{
using (var p = new PyObject(ToPython(o, o?.GetType())))
{
resultlist.Append(p);
}
}
Runtime.XIncref(resultlist.Handle);
return(resultlist.Handle);
}
}
// it the type is a python subclass of a managed type then return the
// underlying python object rather than construct a new wrapper object.
var pyderived = value as IPythonDerivedType;
if (null != pyderived)
{
if (!IsTransparentProxy(pyderived))
{
return(ClassDerivedObject.ToPython(pyderived));
}
}
// hmm - from Python, we almost never care what the declared
// type is. we'd rather have the object bound to the actual
// implementing class.
type = value.GetType();
TypeCode tc = Type.GetTypeCode(type);
switch (tc)
{
case TypeCode.Object:
if (value is TimeSpan)
{
var timespan = (TimeSpan)value;
IntPtr timeSpanArgs = Runtime.PyTuple_New(1);
Runtime.PyTuple_SetItem(timeSpanArgs, 0, Runtime.PyFloat_FromDouble(timespan.TotalDays));
var returnTimeSpan = Runtime.PyObject_CallObject(timeSpanCtor, timeSpanArgs);
// clean up
Runtime.XDecref(timeSpanArgs);
return(returnTimeSpan);
}
return(CLRObject.GetInstHandle(value, type));
case TypeCode.String:
return(Runtime.PyUnicode_FromString((string)value));
case TypeCode.Int32:
return(Runtime.PyInt_FromInt32((int)value));
case TypeCode.Boolean:
if ((bool)value)
{
Runtime.XIncref(Runtime.PyTrue);
return(Runtime.PyTrue);
}
Runtime.XIncref(Runtime.PyFalse);
return(Runtime.PyFalse);
case TypeCode.Byte:
return(Runtime.PyInt_FromInt32((int)((byte)value)));
case TypeCode.Char:
return(Runtime.PyUnicode_FromOrdinal((int)((char)value)));
case TypeCode.Int16:
return(Runtime.PyInt_FromInt32((int)((short)value)));
case TypeCode.Int64:
return(Runtime.PyLong_FromLongLong((long)value));
case TypeCode.Single:
// return Runtime.PyFloat_FromDouble((double)((float)value));
string ss = ((float)value).ToString(nfi);
IntPtr ps = Runtime.PyString_FromString(ss);
NewReference op = Runtime.PyFloat_FromString(new BorrowedReference(ps));;
Runtime.XDecref(ps);
return(op.DangerousMoveToPointerOrNull());
case TypeCode.Double:
return(Runtime.PyFloat_FromDouble((double)value));
case TypeCode.SByte:
return(Runtime.PyInt_FromInt32((int)((sbyte)value)));
case TypeCode.UInt16:
return(Runtime.PyInt_FromInt32((int)((ushort)value)));
case TypeCode.UInt32:
return(Runtime.PyLong_FromUnsignedLong((uint)value));
case TypeCode.UInt64:
return(Runtime.PyLong_FromUnsignedLongLong((ulong)value));
case TypeCode.Decimal:
// C# decimal to python decimal has a big impact on performance
// so we will use C# double and python float
return(Runtime.PyFloat_FromDouble(decimal.ToDouble((decimal)value)));
case TypeCode.DateTime:
var datetime = (DateTime)value;
var size = datetime.Kind == DateTimeKind.Unspecified ? 7 : 8;
IntPtr dateTimeArgs = Runtime.PyTuple_New(size);
Runtime.PyTuple_SetItem(dateTimeArgs, 0, Runtime.PyInt_FromInt32(datetime.Year));
Runtime.PyTuple_SetItem(dateTimeArgs, 1, Runtime.PyInt_FromInt32(datetime.Month));
Runtime.PyTuple_SetItem(dateTimeArgs, 2, Runtime.PyInt_FromInt32(datetime.Day));
Runtime.PyTuple_SetItem(dateTimeArgs, 3, Runtime.PyInt_FromInt32(datetime.Hour));
Runtime.PyTuple_SetItem(dateTimeArgs, 4, Runtime.PyInt_FromInt32(datetime.Minute));
Runtime.PyTuple_SetItem(dateTimeArgs, 5, Runtime.PyInt_FromInt32(datetime.Second));
// datetime.datetime 6th argument represents micro seconds
var totalSeconds = datetime.TimeOfDay.TotalSeconds;
var microSeconds = Convert.ToInt32((totalSeconds - Math.Truncate(totalSeconds)) * 1000000);
if (microSeconds == 1000000)
{
microSeconds = 999999;
}
Runtime.PyTuple_SetItem(dateTimeArgs, 6, Runtime.PyInt_FromInt32(microSeconds));
if (size == 8)
{
Runtime.PyTuple_SetItem(dateTimeArgs, 7, TzInfo(datetime.Kind));
}
var returnDateTime = Runtime.PyObject_CallObject(dateTimeCtor, dateTimeArgs);
// clean up
Runtime.XDecref(dateTimeArgs);
return(returnDateTime);
default:
if (value is IEnumerable)
{
using (var resultlist = new PyList())
{
foreach (object o in (IEnumerable)value)
{
using (var p = new PyObject(ToPython(o, o?.GetType())))
{
resultlist.Append(p);
}
}
Runtime.XIncref(resultlist.Handle);
return(resultlist.Handle);
}
}
result = CLRObject.GetInstHandle(value, type);
return(result);
}
}
internal static IntPtr ToPython(Object value, Type type)
{
IntPtr result = IntPtr.Zero;
// Null always converts to None in Python.
if (value == null)
{
result = Runtime.PyNone;
Runtime.Incref(result);
return(result);
}
// it the type is a python subclass of a managed type then return the
// underying python object rather than construct a new wrapper object.
IPythonDerivedType pyderived = value as IPythonDerivedType;
if (null != pyderived)
{
return(ClassDerivedObject.ToPython(pyderived));
}
// hmm - from Python, we almost never care what the declared
// type is. we'd rather have the object bound to the actual
// implementing class.
type = value.GetType();
TypeCode tc = Type.GetTypeCode(type);
switch (tc)
{
case TypeCode.Object:
result = CLRObject.GetInstHandle(value, type);
// XXX - hack to make sure we convert new-style class based
// managed exception instances to wrappers ;(
if (Runtime.wrap_exceptions)
{
Exception e = value as Exception;
if (e != null)
{
return(Exceptions.GetExceptionInstanceWrapper(result));
}
}
return(result);
case TypeCode.String:
return(Runtime.PyUnicode_FromString((string)value));
case TypeCode.Int32:
return(Runtime.PyInt_FromInt32((int)value));
case TypeCode.Boolean:
if ((bool)value)
{
Runtime.Incref(Runtime.PyTrue);
return(Runtime.PyTrue);
}
Runtime.Incref(Runtime.PyFalse);
return(Runtime.PyFalse);
case TypeCode.Byte:
return(Runtime.PyInt_FromInt32((int)((byte)value)));
case TypeCode.Char:
return(Runtime.PyUnicode_FromOrdinal((int)((char)value)));
case TypeCode.Int16:
return(Runtime.PyInt_FromInt32((int)((short)value)));
case TypeCode.Int64:
return(Runtime.PyLong_FromLongLong((long)value));
case TypeCode.Single:
// return Runtime.PyFloat_FromDouble((double)((float)value));
string ss = ((float)value).ToString(nfi);
IntPtr ps = Runtime.PyString_FromString(ss);
IntPtr op = Runtime.PyFloat_FromString(ps, IntPtr.Zero);
Runtime.Decref(ps);
return(op);
case TypeCode.Double:
return(Runtime.PyFloat_FromDouble((double)value));
case TypeCode.SByte:
return(Runtime.PyInt_FromInt32((int)((sbyte)value)));
case TypeCode.UInt16:
return(Runtime.PyInt_FromInt32((int)((ushort)value)));
case TypeCode.UInt32:
return(Runtime.PyLong_FromUnsignedLong((uint)value));
case TypeCode.UInt64:
return(Runtime.PyLong_FromUnsignedLongLong((ulong)value));
default:
if (value is IEnumerable)
{
using (var resultlist = new PyList())
{
foreach (object o in (IEnumerable)value)
{
using (var p = new PyObject(ToPython(o, o.GetType())))
resultlist.Append(p);
}
Runtime.Incref(resultlist.Handle);
return(resultlist.Handle);
}
}
result = CLRObject.GetInstHandle(value, type);
return(result);
}
}
internal static IntPtr ToPython(object value, Type type)
{
if (value is PyObject)
{
IntPtr handle = ((PyObject)value).Handle;
Runtime.XIncref(handle);
return(handle);
}
IntPtr result = IntPtr.Zero;
// Null always converts to None in Python.
if (value == null)
{
result = Runtime.PyNone;
Runtime.XIncref(result);
return(result);
}
if (value is IList && value.GetType().IsGenericType)
{
using (var resultlist = new PyList())
{
foreach (object o in (IEnumerable)value)
{
using (var p = new PyObject(ToPython(o, o?.GetType())))
{
resultlist.Append(p);
}
}
Runtime.XIncref(resultlist.Handle);
return(resultlist.Handle);
}
}
// it the type is a python subclass of a managed type then return the
// underlying python object rather than construct a new wrapper object.
var pyderived = value as IPythonDerivedType;
if (null != pyderived)
{
return(ClassDerivedObject.ToPython(pyderived));
}
// hmm - from Python, we almost never care what the declared
// type is. we'd rather have the object bound to the actual
// implementing class.
type = value.GetType();
TypeCode tc = Type.GetTypeCode(type);
switch (tc)
{
case TypeCode.Object:
if (value is TimeSpan)
{
var timespan = (TimeSpan)value;
IntPtr timeSpanArgs = Runtime.PyTuple_New(1);
Runtime.PyTuple_SetItem(timeSpanArgs, 0, Runtime.PyFloat_FromDouble(timespan.TotalDays));
return(Runtime.PyObject_CallObject(timeSpanCtor, timeSpanArgs));
}
return(CLRObject.GetInstHandle(value, type));
case TypeCode.String:
return(Runtime.PyUnicode_FromString((string)value));
case TypeCode.Int32:
return(Runtime.PyInt_FromInt32((int)value));
case TypeCode.Boolean:
if ((bool)value)
{
Runtime.XIncref(Runtime.PyTrue);
return(Runtime.PyTrue);
}
Runtime.XIncref(Runtime.PyFalse);
return(Runtime.PyFalse);
case TypeCode.Byte:
return(Runtime.PyInt_FromInt32((int)((byte)value)));
case TypeCode.Char:
return(Runtime.PyUnicode_FromOrdinal((int)((char)value)));
case TypeCode.Int16:
return(Runtime.PyInt_FromInt32((int)((short)value)));
case TypeCode.Int64:
return(Runtime.PyLong_FromLongLong((long)value));
case TypeCode.Single:
// return Runtime.PyFloat_FromDouble((double)((float)value));
string ss = ((float)value).ToString(nfi);
IntPtr ps = Runtime.PyString_FromString(ss);
IntPtr op = Runtime.PyFloat_FromString(ps, IntPtr.Zero);
Runtime.XDecref(ps);
return(op);
case TypeCode.Double:
return(Runtime.PyFloat_FromDouble((double)value));
case TypeCode.SByte:
return(Runtime.PyInt_FromInt32((int)((sbyte)value)));
case TypeCode.UInt16:
return(Runtime.PyInt_FromInt32((int)((ushort)value)));
case TypeCode.UInt32:
return(Runtime.PyLong_FromUnsignedLong((uint)value));
case TypeCode.UInt64:
return(Runtime.PyLong_FromUnsignedLongLong((ulong)value));
case TypeCode.Decimal:
string d2s = ((decimal)value).ToString(nfi);
IntPtr d2p = Runtime.PyString_FromString(d2s);
IntPtr decimalArgs = Runtime.PyTuple_New(1);
Runtime.PyTuple_SetItem(decimalArgs, 0, d2p);
return(Runtime.PyObject_CallObject(decimalCtor, decimalArgs));
case TypeCode.DateTime:
var datetime = (DateTime)value;
IntPtr dateTimeArgs = Runtime.PyTuple_New(8);
Runtime.PyTuple_SetItem(dateTimeArgs, 0, Runtime.PyInt_FromInt32(datetime.Year));
Runtime.PyTuple_SetItem(dateTimeArgs, 1, Runtime.PyInt_FromInt32(datetime.Month));
Runtime.PyTuple_SetItem(dateTimeArgs, 2, Runtime.PyInt_FromInt32(datetime.Day));
Runtime.PyTuple_SetItem(dateTimeArgs, 3, Runtime.PyInt_FromInt32(datetime.Hour));
Runtime.PyTuple_SetItem(dateTimeArgs, 4, Runtime.PyInt_FromInt32(datetime.Minute));
Runtime.PyTuple_SetItem(dateTimeArgs, 5, Runtime.PyInt_FromInt32(datetime.Second));
Runtime.PyTuple_SetItem(dateTimeArgs, 6, Runtime.PyInt_FromInt32(1000 * datetime.Millisecond));
Runtime.PyTuple_SetItem(dateTimeArgs, 7, TzInfo(datetime.Kind));
return(Runtime.PyObject_CallObject(dateTimeCtor, dateTimeArgs));
default:
if (value is IEnumerable)
{
using (var resultlist = new PyList())
{
foreach (object o in (IEnumerable)value)
{
using (var p = new PyObject(ToPython(o, o?.GetType())))
{
resultlist.Append(p);
}
}
Runtime.XIncref(resultlist.Handle);
return(resultlist.Handle);
}
}
result = CLRObject.GetInstHandle(value, type);
return(result);
}
}
