| private PyTuple_GetItem ( IntPtr pointer, int index ) : IntPtr | ||
| pointer | IntPtr | |
| index | int | |
| Résultat | IntPtr | |
static IntPtr HandleParamsArray(IntPtr args, int arrayStart, int pyArgCount, out bool isNewReference)
{
isNewReference = false;
IntPtr op;
// for a params method, we may have a sequence or single/multiple items
// here we look to see if the item at the paramIndex is there or not
// and then if it is a sequence itself.
if ((pyArgCount - arrayStart) == 1)
{
// Ee only have one argument left, so we need to check to see if it is a sequence or a single item
// We also need to check if this object is possibly a wrapped C# Enumerable Object
IntPtr item = Runtime.PyTuple_GetItem(args, arrayStart);
if (!Runtime.PyString_Check(item) && (Runtime.PySequence_Check(item) || (ManagedType.GetManagedObject(item) as CLRObject)?.inst is IEnumerable))
{
// it's a sequence (and not a string), so we use it as the op
op = item;
}
else
{
// Its a single value that needs to be converted into the params array
isNewReference = true;
op = Runtime.PyTuple_GetSlice(args, arrayStart, pyArgCount);
}
}
else
{
// Its a set of individual values, so we grab them as a tuple to be converted into the params array
isNewReference = true;
op = Runtime.PyTuple_GetSlice(args, arrayStart, pyArgCount);
}
return(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));
}
public static IntPtr tp_call(IntPtr ob, IntPtr args, IntPtr kw)
{
MethodBinding self = (MethodBinding)GetManagedObject(ob);
// This supports calling a method 'unbound', passing the instance
// as the first argument. Note that this is not supported if any
// of the overloads are static since we can't know if the intent
// was to call the static method or the unbound instance method.
if ((self.target == IntPtr.Zero) && (!self.m.IsStatic()))
{
if (Runtime.PyTuple_Size(args) < 1)
{
Exceptions.SetError(Exceptions.TypeError,
"not enough arguments"
);
return(IntPtr.Zero);
}
int len = Runtime.PyTuple_Size(args);
IntPtr uargs = Runtime.PyTuple_GetSlice(args, 1, len);
IntPtr inst = Runtime.PyTuple_GetItem(args, 0);
Runtime.Incref(inst);
IntPtr r = self.m.Invoke(inst, uargs, kw, self.info);
Runtime.Decref(inst);
Runtime.Decref(uargs);
return(r);
}
return(self.m.Invoke(self.target, args, kw, self.info));
}
/// <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 NewReference tp_new(BorrowedReference tp, BorrowedReference args, BorrowedReference 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"));
}
BorrowedReference 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, new PyObject(method));
return(CLRObject.GetReference(d, ClassManager.GetClass(type)));
}
static IntPtr HandleParamsArray(IntPtr args, int arrayStart, int pyArgCount, out bool isNewReference)
{
isNewReference = false;
IntPtr op;
// for a params method, we may have a sequence or single/multiple items
// here we look to see if the item at the paramIndex is there or not
// and then if it is a sequence itself.
if ((pyArgCount - arrayStart) == 1)
{
// we only have one argument left, so we need to check it
// to see if it is a sequence or a single item
IntPtr item = Runtime.PyTuple_GetItem(args, arrayStart);
if (!Runtime.PyString_Check(item) && Runtime.PySequence_Check(item))
{
// it's a sequence (and not a string), so we use it as the op
op = item;
}
else
{
isNewReference = true;
op = Runtime.PyTuple_GetSlice(args, arrayStart, pyArgCount);
}
}
else
{
isNewReference = true;
op = Runtime.PyTuple_GetSlice(args, arrayStart, pyArgCount);
}
return(op);
}
//====================================================================
// Implements __setitem__ for reflected classes and value types.
//====================================================================
public static int mp_ass_subscript(IntPtr ob, IntPtr idx, IntPtr v)
{
//ManagedType self = GetManagedObject(ob);
IntPtr tp = Runtime.PyObject_TYPE(ob);
ClassBase cls = (ClassBase)GetManagedObject(tp);
if (cls.indexer == null || !cls.indexer.CanSet)
{
Exceptions.SetError(Exceptions.TypeError,
"object doesn't support item assignment"
);
return(-1);
}
// Arg may be a tuple in the case of an indexer with multiple
// parameters. If so, use it directly, else make a new tuple
// with the index arg (method binders expect arg tuples).
IntPtr args = idx;
bool free = false;
if (!Runtime.PyTuple_Check(idx))
{
args = Runtime.PyTuple_New(1);
Runtime.Incref(idx);
Runtime.PyTuple_SetItem(args, 0, idx);
free = true;
}
int i = Runtime.PyTuple_Size(args);
IntPtr real = Runtime.PyTuple_New(i + 1);
for (int n = 0; n < i; n++)
{
IntPtr item = Runtime.PyTuple_GetItem(args, n);
Runtime.Incref(item);
Runtime.PyTuple_SetItem(real, n, item);
}
Runtime.Incref(v);
Runtime.PyTuple_SetItem(real, i, v);
try {
cls.indexer.SetItem(ob, real);
}
finally {
Runtime.Decref(real);
if (free)
{
Runtime.Decref(args);
}
}
if (Exceptions.ErrorOccurred())
{
return(-1);
}
return(0);
}
//====================================================================
// Metatype __new__ implementation. This is called to create a new
// class / type when a reflected class is subclassed.
//====================================================================
public static IntPtr tp_new(IntPtr tp, IntPtr args, IntPtr kw)
{
int len = Runtime.PyTuple_Size(args);
if (len < 3)
{
return(Exceptions.RaiseTypeError("invalid argument list"));
}
IntPtr name = Runtime.PyTuple_GetItem(args, 0);
IntPtr bases = Runtime.PyTuple_GetItem(args, 1);
IntPtr dict = Runtime.PyTuple_GetItem(args, 2);
// We do not support multiple inheritance, so the bases argument
// should be a 1-item tuple containing the type we are subtyping.
// That type must itself have a managed implementation. We check
// that by making sure its metatype is the CLR metatype.
if (Runtime.PyTuple_Size(bases) != 1)
{
return(Exceptions.RaiseTypeError(
"cannot use multiple inheritance with managed classes"
));
}
IntPtr base_type = Runtime.PyTuple_GetItem(bases, 0);
IntPtr mt = Runtime.PyObject_TYPE(base_type);
if (!((mt == PyCLRMetaType) || (mt == Runtime.PyTypeType)))
{
return(Exceptions.RaiseTypeError("invalid metatype"));
}
// Ensure that the reflected type is appropriate for subclassing,
// disallowing subclassing of delegates, enums and array types.
ClassBase cb = GetManagedObject(base_type) as ClassBase;
if (cb != null)
{
if (!cb.CanSubclass())
{
return(Exceptions.RaiseTypeError(
"delegates, enums and array types cannot be subclassed"
));
}
}
IntPtr slots = Runtime.PyDict_GetItemString(dict, "__slots__");
if (slots != IntPtr.Zero)
{
return(Exceptions.RaiseTypeError(
"subclasses of managed classes do not support __slots__"
));
}
return(TypeManager.CreateSubType(name, base_type, dict));
}
/// <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());
}
internal static IntPtr CreateSubType(IntPtr args)
{
IntPtr py_name = Runtime.PyTuple_GetItem(args, 0);
IntPtr bases = Runtime.PyTuple_GetItem(args, 1);
IntPtr dict = Runtime.PyTuple_GetItem(args, 2);
IntPtr base_ = Runtime.PyTuple_GetItem(bases, 0);
string name = Runtime.GetManagedString(py_name);
IntPtr type = AllocateTypeObject(name);
Marshal.WriteIntPtr(type, TypeOffset.ob_type, Runtime.PyCLRMetaType);
Runtime.Incref(Runtime.PyCLRMetaType);
Marshal.WriteIntPtr(type, TypeOffset.tp_basicsize, (IntPtr)obSize);
Marshal.WriteIntPtr(type, TypeOffset.tp_itemsize, IntPtr.Zero);
IntPtr offset = (IntPtr)ObjectOffset.ob_dict;
Marshal.WriteIntPtr(type, TypeOffset.tp_dictoffset, offset);
IntPtr dc = Runtime.PyDict_Copy(dict);
Marshal.WriteIntPtr(type, TypeOffset.tp_dict, dc);
Marshal.WriteIntPtr(type, TypeOffset.tp_base, base_);
Runtime.Incref(base_);
int flags = TypeFlags.Default;
flags |= TypeFlags.Managed;
flags |= TypeFlags.HeapType;
flags |= TypeFlags.BaseType;
flags |= TypeFlags.Subclass;
flags |= TypeFlags.HaveGC;
Marshal.WriteIntPtr(type, TypeOffset.tp_flags, (IntPtr)flags);
CopySlot(base_, type, TypeOffset.tp_traverse);
CopySlot(base_, type, TypeOffset.tp_clear);
CopySlot(base_, type, TypeOffset.tp_is_gc);
Runtime.PyType_Ready(type);
IntPtr tp_dict = Marshal.ReadIntPtr(type, TypeOffset.tp_dict);
IntPtr mod = Runtime.PyString_FromString("CLR");
Runtime.PyDict_SetItemString(tp_dict, "__module__", mod);
// for now, move up hidden handle...
IntPtr gc = Marshal.ReadIntPtr(base_, TypeOffset.magic());
Marshal.WriteIntPtr(type, TypeOffset.magic(), gc);
return(type);
}
static NewReference CreateMultidimensional(Type elementType, long[] dimensions, BorrowedReference shapeTuple, BorrowedReference pyType)
{
for (int dimIndex = 0; dimIndex < dimensions.Length; dimIndex++)
{
BorrowedReference dimObj = Runtime.PyTuple_GetItem(shapeTuple, dimIndex);
PythonException.ThrowIfIsNull(dimObj);
if (!Runtime.PyInt_Check(dimObj))
{
Exceptions.RaiseTypeError("array constructor expects integer dimensions");
return(default);
private static NewReference NewEnum(Type type, BorrowedReference args, BorrowedReference tp)
{
nint argCount = Runtime.PyTuple_Size(args);
bool allowUnchecked = false;
if (argCount == 2)
{
var allow = Runtime.PyTuple_GetItem(args, 1);
if (!Converter.ToManaged(allow, typeof(bool), out var allowObj, true) || allowObj is null)
{
Exceptions.RaiseTypeError("second argument to enum constructor must be a boolean");
return(default);
/// <summary>
/// Attempts to convert Python argument tuple into an array of managed objects,
/// that can be passed to a method.
/// </summary>
/// <param name="pi">Information about expected parameters</param>
/// <param name="paramsArray"><c>true</c>, if the last parameter is a params array.</param>
/// <param name="args">A pointer to the Python argument tuple</param>
/// <param name="pyArgCount">Number of arguments, passed by Python</param>
/// <param name="defaultArgList">A list of default values for omitted parameters</param>
/// <param name="needsResolution"><c>true</c>, if overloading resolution is required</param>
/// <param name="outs">Returns number of output parameters</param>
/// <returns>An array of .NET arguments, that can be passed to a method.</returns>
static object[] TryConvertArguments(ParameterInfo[] pi, bool paramsArray,
IntPtr args, int pyArgCount,
ArrayList defaultArgList,
bool needsResolution,
out int outs)
{
outs = 0;
var margs = new object[pi.Length];
int arrayStart = paramsArray ? pi.Length - 1 : -1;
for (int paramIndex = 0; paramIndex < pi.Length; paramIndex++)
{
if (paramIndex >= pyArgCount)
{
if (defaultArgList != null)
{
margs[paramIndex] = defaultArgList[paramIndex - pyArgCount];
}
continue;
}
var parameter = pi[paramIndex];
IntPtr op = (arrayStart == paramIndex)
// map remaining Python arguments to a tuple since
// the managed function accepts it - hopefully :]
? Runtime.PyTuple_GetSlice(args, arrayStart, pyArgCount)
: Runtime.PyTuple_GetItem(args, paramIndex);
bool isOut;
if (!TryConvertArgument(op, parameter.ParameterType, needsResolution, out margs[paramIndex], out isOut))
{
return(null);
}
if (arrayStart == paramIndex)
{
Console.WriteLine("--CHECK THIS!!!!");
// TODO: is this a bug? Should this happen even if the conversion fails?
// GetSlice() creates a new reference but GetItem()
// returns only a borrow reference.
Runtime.XDecref(op);
}
if (parameter.IsOut || isOut)
{
outs++;
}
}
return(margs);
}
public static NewReference tp_new(BorrowedReference tp, BorrowedReference args, BorrowedReference kw)
{
if (kw != null)
{
return(Exceptions.RaiseTypeError("array constructor takes no keyword arguments"));
}
var self = (ArrayObject)GetManagedObject(tp) !;
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: args,
pyType: tp));
}
BorrowedReference 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));
}
}
// this implements casting to Array[T]
if (Converter.ToManaged(op, arrType, out object?result, true))
{
return(CLRObject.GetReference(result !, tp));
}
else
{
return(default);
//====================================================================
// MethodBinding __call__ implementation.
//====================================================================
public static IntPtr tp_call(IntPtr ob, IntPtr args, IntPtr kw)
{
MethodBinding self = (MethodBinding)GetManagedObject(ob);
// This works around a situation where the wrong generic method is picked,
// for example this method in the tests: string Overloaded<T>(int arg1, int arg2, string arg3)
if (self.info != null)
{
if (self.info.IsGenericMethod)
{
int len = Runtime.PyTuple_Size(args);
Type[] sigTp = Runtime.PythonArgsToTypeArray(args, true);
if (sigTp != null)
{
Type[] genericTp = self.info.GetGenericArguments();
MethodInfo betterMatch = MethodBinder.MatchSignatureAndParameters(self.m.info, genericTp, sigTp);
if (betterMatch != null)
{
self.info = betterMatch;
}
}
}
}
// This supports calling a method 'unbound', passing the instance
// as the first argument. Note that this is not supported if any
// of the overloads are static since we can't know if the intent
// was to call the static method or the unbound instance method.
if ((self.target == IntPtr.Zero) && (!self.m.IsStatic()))
{
int len = Runtime.PyTuple_Size(args);
if (len < 1)
{
Exceptions.SetError(Exceptions.TypeError, "not enough arguments");
return(IntPtr.Zero);
}
IntPtr uargs = Runtime.PyTuple_GetSlice(args, 1, len);
IntPtr inst = Runtime.PyTuple_GetItem(args, 0);
Runtime.Incref(inst);
IntPtr r = self.m.Invoke(inst, uargs, kw, self.info);
Runtime.Decref(inst);
Runtime.Decref(uargs);
return(r);
}
return(self.m.Invoke(self.target, args, kw, self.info));
}
public static IntPtr tp_new(IntPtr tp, IntPtr args, IntPtr kw)
{
var self = GetManagedObject(tp) as ArrayObject;
if (Runtime.PyTuple_Size(args) != 1)
{
return(Exceptions.RaiseTypeError("array expects 1 argument"));
}
IntPtr op = Runtime.PyTuple_GetItem(args, 0);
object result;
if (!Converter.ToManaged(op, self.type, out result, true))
{
return(IntPtr.Zero);
}
return(CLRObject.GetInstHandle(result, tp));
}
//====================================================================
// 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));
}
/// <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(self.WrapObject(obj));
}
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>
/// Implements __new__ for reflected interface types.
/// </summary>
public static NewReference tp_new(BorrowedReference tp, BorrowedReference args, BorrowedReference 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)
{
BorrowedReference 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(default);
internal static IntPtr GenerateExceptionClass(IntPtr real)
{
if (real == ns_exc)
{
return(os_exc);
}
IntPtr nbases = Runtime.PyObject_GetAttrString(real, "__bases__");
if (Runtime.PyTuple_Size(nbases) != 1)
{
throw new SystemException("Invalid __bases__");
}
IntPtr nsbase = Runtime.PyTuple_GetItem(nbases, 0);
Runtime.Decref(nbases);
IntPtr osbase = GetExceptionClassWrapper(nsbase);
IntPtr baselist = Runtime.PyTuple_New(1);
Runtime.Incref(osbase);
Runtime.PyTuple_SetItem(baselist, 0, osbase);
IntPtr name = Runtime.PyObject_GetAttrString(real, "__name__");
IntPtr dict = Runtime.PyDict_New();
IntPtr mod = Runtime.PyObject_GetAttrString(real, "__module__");
Runtime.PyDict_SetItemString(dict, "__module__", mod);
Runtime.Decref(mod);
IntPtr subc = Runtime.PyClass_New(baselist, dict, name);
Runtime.Decref(baselist);
Runtime.Decref(dict);
Runtime.Decref(name);
Runtime.PyObject_SetAttrString(subc, "_class", real);
return(subc);
}
private static Dictionary <PyString, PyObject> GetDotNetModules()
{
BorrowedReference pyModules = Runtime.PyImport_GetModuleDict();
using var items = Runtime.PyDict_Items(pyModules);
nint length = Runtime.PyList_Size(items.BorrowOrThrow());
Debug.Assert(length >= 0);
var modules = new Dictionary <PyString, PyObject>();
for (nint i = 0; i < length; i++)
{
BorrowedReference item = Runtime.PyList_GetItem(items.Borrow(), i);
BorrowedReference name = Runtime.PyTuple_GetItem(item, 0);
BorrowedReference module = Runtime.PyTuple_GetItem(item, 1);
if (ManagedType.IsInstanceOfManagedType(module))
{
modules.Add(new PyString(name), new PyObject(module));
}
}
return(modules);
}
/// <summary>
/// Implements __new__ for reflected generic types.
/// </summary>
public static NewReference tp_new(BorrowedReference tp, BorrowedReference args, BorrowedReference kw)
{
var self = (GenericType)GetManagedObject(tp) !;
if (!self.type.Valid)
{
return(Exceptions.RaiseTypeError(self.type.DeletedMessage));
}
var type = self.type.Value;
if (type.IsInterface && !type.IsConstructedGenericType)
{
var nargs = Runtime.PyTuple_Size(args);
if (nargs == 1)
{
var instance = Runtime.PyTuple_GetItem(args, 0);
return(AsGenericInterface(instance, type));
}
}
Exceptions.SetError(Exceptions.TypeError, "cannot instantiate an open generic type");
return(default);
protected static void AppendArgumentTypes(StringBuilder to, IntPtr args)
{
long argCount = Runtime.PyTuple_Size(args);
to.Append("(");
for (long argIndex = 0; argIndex < argCount; argIndex++)
{
var arg = Runtime.PyTuple_GetItem(args, argIndex);
if (arg != IntPtr.Zero)
{
var type = Runtime.PyObject_Type(arg);
if (type != IntPtr.Zero)
{
try
{
var description = Runtime.PyObject_Str(type);
if (description != IntPtr.Zero)
{
to.Append(Runtime.GetManagedString(description));
Runtime.XDecref(description);
}
}
finally
{
Runtime.XDecref(type);
}
}
}
if (argIndex + 1 < argCount)
{
to.Append(", ");
}
}
to.Append(')');
}
/// <summary>
/// The actual import hook that ties Python to the managed world.
/// </summary>
public static IntPtr __import__(IntPtr self, IntPtr argsRaw, IntPtr kw)
{
var args = new BorrowedReference(argsRaw);
// Replacement for the builtin __import__. The original import
// hook is saved as this.py_import. This version handles CLR
// import and defers to the normal builtin for everything else.
var num_args = Runtime.PyTuple_Size(args);
if (num_args < 1)
{
return(Exceptions.RaiseTypeError("__import__() takes at least 1 argument (0 given)"));
}
BorrowedReference py_mod_name = Runtime.PyTuple_GetItem(args, 0);
if (py_mod_name.IsNull ||
!Runtime.IsStringType(py_mod_name))
{
return(Exceptions.RaiseTypeError("string expected"));
}
// Check whether the import is of the form 'from x import y'.
// This determines whether we return the head or tail module.
BorrowedReference fromList = default;
var fromlist = false;
if (num_args >= 4)
{
fromList = Runtime.PyTuple_GetItem(args, 3);
if (fromList != null &&
Runtime.PyObject_IsTrue(fromList) == 1)
{
fromlist = true;
}
}
string mod_name = Runtime.GetManagedString(py_mod_name);
// Check these BEFORE the built-in import runs; may as well
// do the Incref()ed return here, since we've already found
// the module.
if (mod_name == "clr")
{
NewReference clr_module = GetCLRModule(fromList);
if (!clr_module.IsNull())
{
BorrowedReference sys_modules = Runtime.PyImport_GetModuleDict();
if (!sys_modules.IsNull)
{
Runtime.PyDict_SetItemString(sys_modules, "clr", clr_module);
}
}
return(clr_module.DangerousMoveToPointerOrNull());
}
string realname = mod_name;
// 2010-08-15: Always seemed smart to let python try first...
// This shaves off a few tenths of a second on test_module.py
// and works around a quirk where 'sys' is found by the
// LoadImplicit() deprecation logic.
// Turns out that the AssemblyManager.ResolveHandler() checks to see if any
// Assembly's FullName.ToLower().StartsWith(name.ToLower()), which makes very
// little sense to me.
IntPtr res = Runtime.PyObject_Call(py_import, args.DangerousGetAddress(), kw);
if (res != IntPtr.Zero)
{
// There was no error.
if (fromlist && IsLoadAll(fromList))
{
var mod = ManagedType.GetManagedObject(res) as ModuleObject;
mod?.LoadNames();
}
return(res);
}
// There was an error
if (!Exceptions.ExceptionMatches(Exceptions.ImportError))
{
// and it was NOT an ImportError; bail out here.
return(IntPtr.Zero);
}
if (mod_name == string.Empty)
{
// Most likely a missing relative import.
// For example site-packages\bs4\builder\__init__.py uses it to check if a package exists:
// from . import _html5lib
// We don't support them anyway
return(IntPtr.Zero);
}
// Save the exception
var originalException = new PythonException();
// Otherwise, just clear the it.
Exceptions.Clear();
string[] names = realname.Split('.');
// See if sys.modules for this interpreter already has the
// requested module. If so, just return the existing module.
BorrowedReference modules = Runtime.PyImport_GetModuleDict();
BorrowedReference module = Runtime.PyDict_GetItem(modules, py_mod_name);
if (module != null)
{
if (fromlist)
{
if (IsLoadAll(fromList))
{
var mod = ManagedType.GetManagedObject(module) as ModuleObject;
mod?.LoadNames();
}
return(new NewReference(module).DangerousMoveToPointer());
}
module = Runtime.PyDict_GetItemString(modules, names[0]);
return(new NewReference(module, canBeNull: true).DangerousMoveToPointer());
}
Exceptions.Clear();
// Traverse the qualified module name to get the named module
// and place references in sys.modules as we go. Note that if
// we are running in interactive mode we pre-load the names in
// each module, which is often useful for introspection. If we
// are not interactive, we stick to just-in-time creation of
// objects at lookup time, which is much more efficient.
// NEW: The clr got a new module variable preload. You can
// enable preloading in a non-interactive python processing by
// setting clr.preload = True
ModuleObject head = mod_name == realname ? null : root;
ModuleObject tail = root;
root.InitializePreload();
foreach (string name in names)
{
ManagedType mt = tail.GetAttribute(name, true);
if (!(mt is ModuleObject))
{
originalException.Restore();
return(IntPtr.Zero);
}
if (head == null)
{
head = (ModuleObject)mt;
}
tail = (ModuleObject)mt;
if (CLRModule.preload)
{
tail.LoadNames();
}
// Add the module to sys.modules
Runtime.PyDict_SetItemString(modules, tail.moduleName, tail.ObjectReference);
}
{
var mod = fromlist ? tail : head;
if (fromlist && IsLoadAll(fromList))
{
mod.LoadNames();
}
Runtime.XIncref(mod.pyHandle);
return(mod.pyHandle);
}
}
//===================================================================
// The actual import hook that ties Python to the managed world.
//===================================================================
public static IntPtr __import__(IntPtr self, IntPtr args, IntPtr kw)
{
// Replacement for the builtin __import__. The original import
// hook is saved as this.py_import. This version handles CLR
// import and defers to the normal builtin for everything else.
int num_args = Runtime.PyTuple_Size(args);
if (num_args < 1)
{
return(Exceptions.RaiseTypeError(
"__import__() takes at least 1 argument (0 given)"
));
}
// borrowed reference
IntPtr py_mod_name = Runtime.PyTuple_GetItem(args, 0);
if ((py_mod_name == IntPtr.Zero) ||
(!Runtime.IsStringType(py_mod_name)))
{
return(Exceptions.RaiseTypeError("string expected"));
}
// Check whether the import is of the form 'from x import y'.
// This determines whether we return the head or tail module.
IntPtr fromList = IntPtr.Zero;
bool fromlist = false;
if (num_args >= 4)
{
fromList = Runtime.PyTuple_GetItem(args, 3);
if ((fromList != IntPtr.Zero) &&
(Runtime.PyObject_IsTrue(fromList) == 1))
{
fromlist = true;
}
}
string mod_name = Runtime.GetManagedString(py_mod_name);
// Check these BEFORE the built-in import runs; may as well
// do the Incref()ed return here, since we've already found
// the module.
if (mod_name == "clr")
{
root.InitializePreload();
Runtime.Incref(root.pyHandle);
return(root.pyHandle);
}
if (mod_name == "CLR")
{
Exceptions.deprecation("The CLR module is deprecated. " +
"Please use 'clr'.");
root.InitializePreload();
Runtime.Incref(root.pyHandle);
return(root.pyHandle);
}
string realname = mod_name;
if (mod_name.StartsWith("CLR."))
{
realname = mod_name.Substring(4);
string msg = String.Format("Importing from the CLR.* namespace " +
"is deprecated. Please import '{0}' directly.", realname);
Exceptions.deprecation(msg);
}
else
{
// 2010-08-15: Always seemed smart to let python try first...
// This shaves off a few tenths of a second on test_module.py
// and works around a quirk where 'sys' is found by the
// LoadImplicit() deprecation logic.
// Turns out that the AssemblyManager.ResolveHandler() checks to see if any
// Assembly's FullName.ToLower().StartsWith(name.ToLower()), which makes very
// little sense to me.
IntPtr res = Runtime.PyObject_Call(py_import, args, kw);
if (res != IntPtr.Zero)
{
// There was no error.
return(res);
}
// There was an error
if (!Exceptions.ExceptionMatches(Exceptions.ImportError))
{
// and it was NOT an ImportError; bail out here.
return(IntPtr.Zero);
}
// Otherwise, just clear the it.
Exceptions.Clear();
}
string[] names = realname.Split('.');
// Now we need to decide if the name refers to a CLR module,
// and may have to do an implicit load (for b/w compatibility)
// using the AssemblyManager. The assembly manager tries
// really hard not to use Python objects or APIs, because
// parts of it can run recursively and on strange threads.
//
// It does need an opportunity from time to time to check to
// see if sys.path has changed, in a context that is safe. Here
// we know we have the GIL, so we'll let it update if needed.
AssemblyManager.UpdatePath();
if (!AssemblyManager.IsValidNamespace(realname))
{
bool fromFile = false;
if (AssemblyManager.LoadImplicit(realname, out fromFile))
{
if (true == fromFile)
{
string deprWarning = String.Format("\nThe module was found, but not in a referenced namespace.\n" +
"Implicit loading is deprecated. Please use clr.AddReference(\"{0}\").", realname);
Exceptions.deprecation(deprWarning);
}
}
else
{
// May be called when a module being imported imports a module.
// In particular, I've seen decimal import copy import org.python.core
return(Runtime.PyObject_Call(py_import, args, kw));
}
}
// See if sys.modules for this interpreter already has the
// requested module. If so, just return the exising module.
IntPtr modules = Runtime.PyImport_GetModuleDict();
IntPtr module = Runtime.PyDict_GetItem(modules, py_mod_name);
if (module != IntPtr.Zero)
{
if (fromlist)
{
Runtime.Incref(module);
return(module);
}
module = Runtime.PyDict_GetItemString(modules, names[0]);
Runtime.Incref(module);
return(module);
}
Exceptions.Clear();
// Traverse the qualified module name to get the named module
// and place references in sys.modules as we go. Note that if
// we are running in interactive mode we pre-load the names in
// each module, which is often useful for introspection. If we
// are not interactive, we stick to just-in-time creation of
// objects at lookup time, which is much more efficient.
// NEW: The clr got a new module variable preload. You can
// enable preloading in a non-interactive python processing by
// setting clr.preload = True
ModuleObject head = (mod_name == realname) ? null : root;
ModuleObject tail = root;
root.InitializePreload();
for (int i = 0; i < names.Length; i++)
{
string name = names[i];
ManagedType mt = tail.GetAttribute(name, true);
if (!(mt is ModuleObject))
{
string error = String.Format("No module named {0}", name);
Exceptions.SetError(Exceptions.ImportError, error);
return(IntPtr.Zero);
}
if (head == null)
{
head = (ModuleObject)mt;
}
tail = (ModuleObject)mt;
if (CLRModule.preload)
{
tail.LoadNames();
}
Runtime.PyDict_SetItemString(modules, tail.moduleName,
tail.pyHandle
);
}
ModuleObject mod = fromlist ? tail : head;
if (fromlist && Runtime.PySequence_Size(fromList) == 1)
{
IntPtr fp = Runtime.PySequence_GetItem(fromList, 0);
if ((!CLRModule.preload) && Runtime.GetManagedString(fp) == "*")
{
mod.LoadNames();
}
Runtime.Decref(fp);
}
Runtime.Incref(mod.pyHandle);
return(mod.pyHandle);
}
/// <summary>
/// Implements __setitem__ for reflected classes and value types.
/// </summary>
public static int mp_ass_subscript(IntPtr ob, IntPtr idx, IntPtr v)
{
IntPtr tp = Runtime.PyObject_TYPE(ob);
var cls = (ClassBase)GetManagedObject(tp);
if (cls.indexer == null || !cls.indexer.CanSet)
{
Exceptions.SetError(Exceptions.TypeError, "object doesn't support item assignment");
return(-1);
}
// Arg may be a tuple in the case of an indexer with multiple
// parameters. If so, use it directly, else make a new tuple
// with the index arg (method binders expect arg tuples).
IntPtr args = idx;
var free = false;
if (!Runtime.PyTuple_Check(idx))
{
args = Runtime.PyTuple_New(1);
Runtime.XIncref(idx);
Runtime.PyTuple_SetItem(args, 0, idx);
free = true;
}
// Get the args passed in.
var i = Runtime.PyTuple_Size(args);
IntPtr defaultArgs = cls.indexer.GetDefaultArgs(args);
var numOfDefaultArgs = Runtime.PyTuple_Size(defaultArgs);
var temp = i + numOfDefaultArgs;
IntPtr real = Runtime.PyTuple_New(temp + 1);
for (var n = 0; n < i; n++)
{
IntPtr item = Runtime.PyTuple_GetItem(args, n);
Runtime.XIncref(item);
Runtime.PyTuple_SetItem(real, n, item);
}
// Add Default Args if needed
for (var n = 0; n < numOfDefaultArgs; n++)
{
IntPtr item = Runtime.PyTuple_GetItem(defaultArgs, n);
Runtime.XIncref(item);
Runtime.PyTuple_SetItem(real, n + i, item);
}
// no longer need defaultArgs
Runtime.XDecref(defaultArgs);
i = temp;
// Add value to argument list
Runtime.XIncref(v);
Runtime.PyTuple_SetItem(real, i, v);
try
{
cls.indexer.SetItem(ob, real);
}
finally
{
Runtime.XDecref(real);
if (free)
{
Runtime.XDecref(args);
}
}
if (Exceptions.ErrorOccurred())
{
return(-1);
}
return(0);
}
internal virtual IntPtr Invoke(IntPtr inst, IntPtr args, IntPtr kw, Type type, MethodBase info, MethodInfo[] methodinfo)
{
List <Binding> bindings = Bind(inst, args, kw, type, info, methodinfo);
object result = null;
IntPtr ts = IntPtr.Zero;
if (bindings.Count == 0)
{
var value = "No method matches given arguments";
if (methodinfo != null && methodinfo.Length > 0)
{
value += $" for {methodinfo[0].Name}";
}
Exceptions.SetError(Exceptions.TypeError, value);
return(IntPtr.Zero);
}
if (allow_threads)
{
ts = PythonEngine.BeginAllowThreads();
}
#region COM Binding
Binding binding = null;
Exception ex = new Exception();
foreach (Binding bind in bindings)
{
if (binding != null)
{
break;
}
try
{
result = bind.info.Invoke(bind.inst, BindingFlags.Default, null, bind.args, null);
binding = bind;
}
catch (TargetInvocationException e)
{
System.Diagnostics.Debug.WriteLine("TargetInvocationException: " + bind.info.Name + " with " + bind.args.Length + " arguments.");
binding = null;
ex = e;
}
catch (Exception e)
{
binding = null;
ex = e;
}
}
if (binding == null)
{
if (ex.InnerException != null)
{
ex = ex.InnerException;
}
if (allow_threads)
{
PythonEngine.EndAllowThreads(ts);
}
Exceptions.SetError(ex);
return(IntPtr.Zero);
}
#endregion
if (allow_threads)
{
PythonEngine.EndAllowThreads(ts);
}
// If there are out parameters, we return a tuple containing
// the result followed by the out parameters. If there is only
// one out parameter and the return type of the method is void,
// we return the out parameter as the result to Python (for
// code compatibility with ironpython).
var mi = (MethodInfo)binding.info;
if (binding.outs == 1 && mi.ReturnType == typeof(void))
{
}
if (binding.outs > 0)
{
ParameterInfo[] pi = mi.GetParameters();
int c = pi.Length;
var n = 0;
IntPtr t = Runtime.PyTuple_New(binding.outs + 1);
IntPtr v = Converter.ToPython(result, mi.ReturnType);
Runtime.PyTuple_SetItem(t, n, v);
n++;
for (var i = 0; i < c; i++)
{
Type pt = pi[i].ParameterType;
if (pi[i].IsOut || pt.IsByRef)
{
v = Converter.ToPython(binding.args[i], pt);
Runtime.PyTuple_SetItem(t, n, v);
n++;
}
}
if (binding.outs == 1 && mi.ReturnType == typeof(void))
{
v = Runtime.PyTuple_GetItem(t, 1);
Runtime.XIncref(v);
Runtime.XDecref(t);
return(v);
}
return(t);
}
return(Converter.ToPython(result, mi.ReturnType));
}
internal virtual IntPtr Invoke(IntPtr inst, IntPtr args, IntPtr kw, MethodBase info, MethodInfo[] methodinfo)
{
// No valid methods, nothing to bind.
if (GetMethods().Length == 0)
{
var msg = new StringBuilder("The underlying C# method(s) have been deleted");
if (list.Count > 0 && list[0].Name != null)
{
msg.Append($": {list[0]}");
}
return(Exceptions.RaiseTypeError(msg.ToString()));
}
Binding binding = Bind(inst, args, kw, info, methodinfo);
object result;
IntPtr ts = IntPtr.Zero;
if (binding == null)
{
var value = new StringBuilder("No method matches given arguments");
if (methodinfo != null && methodinfo.Length > 0)
{
value.Append($" for {methodinfo[0].Name}");
}
else if (list.Count > 0 && list[0].Valid)
{
value.Append($" for {list[0].Value.Name}");
}
value.Append(": ");
Runtime.PyErr_Fetch(out var errType, out var errVal, out var errTrace);
AppendArgumentTypes(to: value, args);
Runtime.PyErr_Restore(errType.StealNullable(), errVal.StealNullable(), errTrace.StealNullable());
Exceptions.RaiseTypeError(value.ToString());
return(IntPtr.Zero);
}
if (allow_threads)
{
ts = PythonEngine.BeginAllowThreads();
}
try
{
result = binding.info.Invoke(binding.inst, BindingFlags.Default, null, binding.args, null);
}
catch (Exception e)
{
if (e.InnerException != null)
{
e = e.InnerException;
}
if (allow_threads)
{
PythonEngine.EndAllowThreads(ts);
}
Exceptions.SetError(e);
return(IntPtr.Zero);
}
if (allow_threads)
{
PythonEngine.EndAllowThreads(ts);
}
// If there are out parameters, we return a tuple containing
// the result, if any, followed by the out parameters. If there is only
// one out parameter and the return type of the method is void,
// we return the out parameter as the result to Python (for
// code compatibility with ironpython).
var mi = (MethodInfo)binding.info;
if (binding.outs > 0)
{
ParameterInfo[] pi = mi.GetParameters();
int c = pi.Length;
var n = 0;
bool isVoid = mi.ReturnType == typeof(void);
int tupleSize = binding.outs + (isVoid ? 0 : 1);
IntPtr t = Runtime.PyTuple_New(tupleSize);
if (!isVoid)
{
IntPtr v = Converter.ToPython(result, mi.ReturnType);
Runtime.PyTuple_SetItem(t, n, v);
n++;
}
for (var i = 0; i < c; i++)
{
Type pt = pi[i].ParameterType;
if (pt.IsByRef)
{
IntPtr v = Converter.ToPython(binding.args[i], pt.GetElementType());
Runtime.PyTuple_SetItem(t, n, v);
n++;
}
}
if (binding.outs == 1 && mi.ReturnType == typeof(void))
{
IntPtr v = Runtime.PyTuple_GetItem(t, 0);
Runtime.XIncref(v);
Runtime.XDecref(t);
return(v);
}
return(t);
}
return(Converter.ToPython(result, mi.ReturnType));
}
/// <summary>
/// Attempts to convert Python positional argument tuple and keyword argument table
/// into an array of managed objects, that can be passed to a method.
/// If unsuccessful, returns null and may set a Python error.
/// </summary>
/// <param name="pi">Information about expected parameters</param>
/// <param name="paramsArray"><c>true</c>, if the last parameter is a params array.</param>
/// <param name="args">A pointer to the Python argument tuple</param>
/// <param name="pyArgCount">Number of arguments, passed by Python</param>
/// <param name="kwargDict">Dictionary of keyword argument name to python object pointer</param>
/// <param name="defaultArgList">A list of default values for omitted parameters</param>
/// <param name="needsResolution"><c>true</c>, if overloading resolution is required</param>
/// <param name="outs">Returns number of output parameters</param>
/// <returns>If successful, an array of .NET arguments that can be passed to the method. Otherwise null.</returns>
static object[] TryConvertArguments(ParameterInfo[] pi, bool paramsArray,
IntPtr args, int pyArgCount,
Dictionary <string, IntPtr> kwargDict,
ArrayList defaultArgList,
out int outs)
{
outs = 0;
var margs = new object[pi.Length];
int arrayStart = paramsArray ? pi.Length - 1 : -1;
for (int paramIndex = 0; paramIndex < pi.Length; paramIndex++)
{
var parameter = pi[paramIndex];
bool hasNamedParam = parameter.Name != null?kwargDict.ContainsKey(parameter.Name) : false;
bool isNewReference = false;
if (paramIndex >= pyArgCount && !(hasNamedParam || (paramsArray && paramIndex == arrayStart)))
{
if (defaultArgList != null)
{
margs[paramIndex] = defaultArgList[paramIndex - pyArgCount];
}
continue;
}
IntPtr op;
if (hasNamedParam)
{
op = kwargDict[parameter.Name];
}
else
{
if (arrayStart == paramIndex)
{
op = HandleParamsArray(args, arrayStart, pyArgCount, out isNewReference);
}
else
{
op = Runtime.PyTuple_GetItem(args, paramIndex);
}
}
bool isOut;
if (!TryConvertArgument(op, parameter.ParameterType, out margs[paramIndex], out isOut))
{
return(null);
}
if (isNewReference)
{
// TODO: is this a bug? Should this happen even if the conversion fails?
// GetSlice() creates a new reference but GetItem()
// returns only a borrow reference.
Runtime.XDecref(op);
}
if (isOut)
{
outs++;
}
}
return(margs);
}