| private PyTuple_Size ( IntPtr pointer ) : int | ||
| pointer | IntPtr | |
| return | int | |
/// <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));
}
internal bool NeedsDefaultArgs(IntPtr args)
{
var methods = SetterBinder.GetMethods();
if (methods.Count == 0)
{
return(false);
}
int pynargs = Runtime.PyTuple_Size(args);
var pi = methods[0].ParameterInfo;
// need to subtract one for the value
int clrnargs = pi.Length - 1;
if (pynargs == clrnargs || pynargs > clrnargs)
{
return(false);
}
for (int v = pynargs; v < clrnargs; v++)
{
if (pi[v].DefaultValue == DBNull.Value)
{
return(false);
}
}
return(true);
}
/// <summary>
/// This will return default arguments a new instance of a tuple. The size
/// of the tuple will indicate the number of default arguments.
/// </summary>
/// <param name="args">This is pointing to the tuple args passed in</param>
/// <returns>a new instance of the tuple containing the default args</returns>
internal IntPtr GetDefaultArgs(IntPtr args)
{
// if we don't need default args return empty tuple
if (!NeedsDefaultArgs(args))
{
return(Runtime.PyTuple_New(0));
}
var pynargs = Runtime.PyTuple_Size(args);
// Get the default arg tuple
MethodBase[] methods = SetterBinder.GetMethods();
MethodBase mi = methods[0];
ParameterInfo[] pi = mi.GetParameters();
int clrnargs = pi.Length - 1;
IntPtr defaultArgs = Runtime.PyTuple_New(clrnargs - pynargs);
for (var i = 0; i < clrnargs - pynargs; i++)
{
if (pi[i + pynargs].DefaultValue == DBNull.Value)
{
continue;
}
IntPtr arg = Converter.ToPython(pi[i + pynargs].DefaultValue, pi[i + pynargs].ParameterType);
Runtime.PyTuple_SetItem(defaultArgs, i, arg);
}
return(defaultArgs);
}
//====================================================================
// 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);
}
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)));
}
/// <summary>
/// This will return default arguments a new instance of a tuple. The size
/// of the tuple will indicate the number of default arguments.
/// </summary>
/// <param name="args">This is pointing to the tuple args passed in</param>
/// <returns>a new instance of the tuple containing the default args</returns>
internal NewReference GetDefaultArgs(BorrowedReference args)
{
// if we don't need default args return empty tuple
if (!NeedsDefaultArgs(args))
{
return(Runtime.PyTuple_New(0));
}
var pynargs = Runtime.PyTuple_Size(args);
// Get the default arg tuple
var methods = SetterBinder.GetMethods();
MethodBase mi = methods[0].MethodBase;
ParameterInfo[] pi = mi.GetParameters();
int clrnargs = pi.Length - 1;
var defaultArgs = Runtime.PyTuple_New(clrnargs - pynargs);
for (var i = 0; i < clrnargs - pynargs; i++)
{
if (pi[i + pynargs].DefaultValue == DBNull.Value)
{
continue;
}
using var arg = Converter.ToPython(pi[i + pynargs].DefaultValue, pi[i + pynargs].ParameterType);
Runtime.PyTuple_SetItem(defaultArgs.Borrow(), i, arg.Steal());
}
return(defaultArgs);
}
/// <summary>
/// Implements __new__ for reflected classes and value types.
/// </summary>
static NewReference tp_new_impl(BorrowedReference tp, BorrowedReference args, BorrowedReference kw)
{
// 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 (GetManagedObject(tp) is not ClassObject self)
{
return(Exceptions.RaiseTypeError("invalid object"));
}
if (!self.type.Valid)
{
return(Exceptions.RaiseTypeError(self.type.DeletedMessage));
}
Type type = self.type.Value;
// 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(default);
internal bool NeedsDefaultArgs(IntPtr args)
{
var pynargs = Runtime.PyTuple_Size(args);
MethodBase[] methods = SetterBinder.GetMethods();
if (methods.Length == 0)
{
return(false);
}
MethodBase mi = methods[0];
ParameterInfo[] pi = mi.GetParameters();
// need to subtract one for the value
int clrnargs = pi.Length - 1;
if (pynargs == clrnargs || pynargs > clrnargs)
{
return(false);
}
for (var v = pynargs; v < clrnargs; v++)
{
if (pi[v].DefaultValue == DBNull.Value)
{
return(false);
}
}
return(true);
}
//====================================================================
// 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());
}
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);
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));
}
/// <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));
}
//====================================================================
// 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>
/// 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);
}
/// <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 List <Binding> Bind(IntPtr inst, IntPtr args, IntPtr kw, Type type, MethodBase info, MethodInfo[] methodinfo)
{
#region COM Binding
List <Binding> bindings = new List <Binding>();
#endregion
// loop to find match, return invoker w/ or /wo error
MethodBase[] _methods = null;
var pynargs = (int)Runtime.PyTuple_Size(args);
var isGeneric = false;
if (info != null)
{
_methods = new MethodBase[1];
_methods.SetValue(info, 0);
}
else
{
_methods = GetMethods();
}
// TODO: Clean up
foreach (MethodBase mi in _methods)
{
#region COM Binding
try
{
// Enforcable return types
if (type != null)
{
if (!(type.IsSubclassOf(((MethodInfo)mi).ReturnType) ||
type.Equals(((MethodInfo)mi).ReturnType)))
{
continue;
}
}
}
catch (InvalidCastException ex) { }
#endregion
if (mi.IsGenericMethod)
{
isGeneric = true;
}
ParameterInfo[] pi = mi.GetParameters();
ArrayList defaultArgList;
bool paramsArray;
if (!MatchesArgumentCount(pynargs, pi, out paramsArray, out defaultArgList))
{
continue;
}
var outs = 0;
var margs = TryConvertArguments(pi, paramsArray, args, pynargs, defaultArgList,
needsResolution: _methods.Length > 1,
outs: out outs);
if (margs == null)
{
continue;
}
object target = null;
if (!mi.IsStatic && inst != IntPtr.Zero)
{
//CLRObject co = (CLRObject)ManagedType.GetManagedObject(inst);
// InvalidCastException: Unable to cast object of type
// 'Python.Runtime.ClassObject' to type 'Python.Runtime.CLRObject'
var co = ManagedType.GetManagedObject(inst) as CLRObject;
// Sanity check: this ensures a graceful exit if someone does
// something intentionally wrong like call a non-static method
// on the class rather than on an instance of the class.
// XXX maybe better to do this before all the other rigmarole.
if (co == null)
{
return(new List <Binding>());
}
target = co.inst;
}
#region COM Binding
bindings.Add(new Binding(mi, target, margs, outs));
//return new Binding(mi, target, margs, outs);
#endregion
}
#region COM Binding
if (bindings.Count > 0)
{
/*Binding item = bindings.Where<Binding>(x => x.info.Name.EndsWith("_Item")).FirstOrDefault<Binding>();
* if (item != null)
* return item;
*
* Binding def = bindings.Where<Binding>(x => x.info.Name.EndsWith("_Default")).FirstOrDefault<Binding>();
* if (def != null)
* return def;
*
* return bindings.First<Binding>();*/
return(bindings.OrderBy(x => x.info.Name).ToList <Binding>());
}
#endregion
// We weren't able to find a matching method but at least one
// is a generic method and info is null. That happens when a generic
// method was not called using the [] syntax. Let's introspect the
// type of the arguments and use it to construct the correct method.
if (isGeneric && info == null && methodinfo != null)
{
Type[] types = Runtime.PythonArgsToTypeArray(args, true);
MethodInfo mi = MatchParameters(methodinfo, types);
return(Bind(inst, args, kw, type, mi, null));
}
return(new List <Binding>());
}
/// <summary>
/// Bind the given Python instance and arguments to a particular method
/// overload in <see cref="list"/> and return a structure that contains the converted Python
/// instance, converted arguments and the correct method to call.
/// If unsuccessful, may set a Python error.
/// </summary>
/// <param name="inst">The Python target of the method invocation.</param>
/// <param name="args">The Python arguments.</param>
/// <param name="kw">The Python keyword arguments.</param>
/// <param name="info">If not null, only bind to that method.</param>
/// <param name="methodinfo">If not null, additionally attempt to bind to the generic methods in this array by inferring generic type parameters.</param>
/// <returns>A Binding if successful. Otherwise null.</returns>
internal Binding Bind(IntPtr inst, IntPtr args, IntPtr kw, MethodBase info, MethodInfo[] methodinfo)
{
// loop to find match, return invoker w/ or w/o error
MethodBase[] _methods = null;
var kwargDict = new Dictionary <string, IntPtr>();
if (kw != IntPtr.Zero)
{
var pynkwargs = (int)Runtime.PyDict_Size(kw);
IntPtr keylist = Runtime.PyDict_Keys(kw);
IntPtr valueList = Runtime.PyDict_Values(kw);
for (int i = 0; i < pynkwargs; ++i)
{
var keyStr = Runtime.GetManagedString(Runtime.PyList_GetItem(new BorrowedReference(keylist), i));
kwargDict[keyStr] = Runtime.PyList_GetItem(new BorrowedReference(valueList), i).DangerousGetAddress();
}
Runtime.XDecref(keylist);
Runtime.XDecref(valueList);
}
var pynargs = (int)Runtime.PyTuple_Size(args);
var isGeneric = false;
if (info != null)
{
_methods = new MethodBase[1];
_methods.SetValue(info, 0);
}
else
{
_methods = GetMethods();
}
var argMatchedMethods = new List <MatchedMethod>(_methods.Length);
var mismatchedMethods = new List <MismatchedMethod>();
// TODO: Clean up
foreach (MethodBase mi in _methods)
{
if (mi.IsGenericMethod)
{
isGeneric = true;
}
ParameterInfo[] pi = mi.GetParameters();
ArrayList defaultArgList;
bool paramsArray;
int kwargsMatched;
int defaultsNeeded;
bool isOperator = OperatorMethod.IsOperatorMethod(mi);
// Binary operator methods will have 2 CLR args but only one Python arg
// (unary operators will have 1 less each), since Python operator methods are bound.
isOperator = isOperator && pynargs == pi.Length - 1;
bool isReverse = isOperator && OperatorMethod.IsReverse((MethodInfo)mi); // Only cast if isOperator.
if (isReverse && OperatorMethod.IsComparisonOp((MethodInfo)mi))
{
continue; // Comparison operators in Python have no reverse mode.
}
if (!MatchesArgumentCount(pynargs, pi, kwargDict, out paramsArray, out defaultArgList, out kwargsMatched, out defaultsNeeded) && !isOperator)
{
continue;
}
// Preprocessing pi to remove either the first or second argument.
if (isOperator && !isReverse)
{
// The first Python arg is the right operand, while the bound instance is the left.
// We need to skip the first (left operand) CLR argument.
pi = pi.Skip(1).ToArray();
}
else if (isOperator && isReverse)
{
// The first Python arg is the left operand.
// We need to take the first CLR argument.
pi = pi.Take(1).ToArray();
}
int outs;
var margs = TryConvertArguments(pi, paramsArray, args, pynargs, kwargDict, defaultArgList, outs: out outs);
if (margs == null)
{
var mismatchCause = PythonException.FetchCurrent();
mismatchedMethods.Add(new MismatchedMethod(mismatchCause, mi));
continue;
}
if (isOperator)
{
if (inst != IntPtr.Zero)
{
if (ManagedType.GetManagedObject(inst) is CLRObject co)
{
bool isUnary = pynargs == 0;
// Postprocessing to extend margs.
var margsTemp = isUnary ? new object[1] : new object[2];
// If reverse, the bound instance is the right operand.
int boundOperandIndex = isReverse ? 1 : 0;
// If reverse, the passed instance is the left operand.
int passedOperandIndex = isReverse ? 0 : 1;
margsTemp[boundOperandIndex] = co.inst;
if (!isUnary)
{
margsTemp[passedOperandIndex] = margs[0];
}
margs = margsTemp;
}
else
{
continue;
}
}
}
var matchedMethod = new MatchedMethod(kwargsMatched, defaultsNeeded, margs, outs, mi);
argMatchedMethods.Add(matchedMethod);
}
if (argMatchedMethods.Count > 0)
{
var bestKwargMatchCount = argMatchedMethods.Max(x => x.KwargsMatched);
var fewestDefaultsRequired = argMatchedMethods.Where(x => x.KwargsMatched == bestKwargMatchCount).Min(x => x.DefaultsNeeded);
int bestCount = 0;
int bestMatchIndex = -1;
for (int index = 0; index < argMatchedMethods.Count; index++)
{
var testMatch = argMatchedMethods[index];
if (testMatch.DefaultsNeeded == fewestDefaultsRequired && testMatch.KwargsMatched == bestKwargMatchCount)
{
bestCount++;
if (bestMatchIndex == -1)
{
bestMatchIndex = index;
}
}
}
if (bestCount > 1 && fewestDefaultsRequired > 0)
{
// Best effort for determining method to match on gives multiple possible
// matches and we need at least one default argument - bail from this point
StringBuilder stringBuilder = new StringBuilder("Not enough arguments provided to disambiguate the method. Found:");
foreach (var matchedMethod in argMatchedMethods)
{
stringBuilder.AppendLine();
stringBuilder.Append(matchedMethod.Method.ToString());
}
Exceptions.SetError(Exceptions.TypeError, stringBuilder.ToString());
return(null);
}
// If we're here either:
// (a) There is only one best match
// (b) There are multiple best matches but none of them require
// default arguments
// in the case of (a) we're done by default. For (b) regardless of which
// method we choose, all arguments are specified _and_ can be converted
// from python to C# so picking any will suffice
MatchedMethod bestMatch = argMatchedMethods[bestMatchIndex];
var margs = bestMatch.ManagedArgs;
var outs = bestMatch.Outs;
var mi = bestMatch.Method;
object target = null;
if (!mi.IsStatic && inst != IntPtr.Zero)
{
//CLRObject co = (CLRObject)ManagedType.GetManagedObject(inst);
// InvalidCastException: Unable to cast object of type
// 'Python.Runtime.ClassObject' to type 'Python.Runtime.CLRObject'
var co = ManagedType.GetManagedObject(inst) as CLRObject;
// Sanity check: this ensures a graceful exit if someone does
// something intentionally wrong like call a non-static method
// on the class rather than on an instance of the class.
// XXX maybe better to do this before all the other rigmarole.
if (co == null)
{
Exceptions.SetError(Exceptions.TypeError, "Invoked a non-static method with an invalid instance");
return(null);
}
target = co.inst;
}
return(new Binding(mi, target, margs, outs));
}
else if (isGeneric && info == null && methodinfo != null)
{
// We weren't able to find a matching method but at least one
// is a generic method and info is null. That happens when a generic
// method was not called using the [] syntax. Let's introspect the
// type of the arguments and use it to construct the correct method.
Type[] types = Runtime.PythonArgsToTypeArray(args, true);
MethodInfo mi = MatchParameters(methodinfo, types);
if (mi != null)
{
return(Bind(inst, args, kw, mi, null));
}
}
if (mismatchedMethods.Count > 0)
{
var aggregateException = GetAggregateException(mismatchedMethods);
Exceptions.SetError(aggregateException);
}
return(null);
}
internal Binding Bind(IntPtr inst, IntPtr args, IntPtr kw, MethodBase info, MethodInfo[] methodinfo)
{
// loop to find match, return invoker w/ or /wo error
MethodBase[] _methods = null;
var kwargDict = new Dictionary <string, IntPtr>();
if (kw != IntPtr.Zero)
{
var pynkwargs = (int)Runtime.PyDict_Size(kw);
IntPtr keylist = Runtime.PyDict_Keys(kw);
IntPtr valueList = Runtime.PyDict_Values(kw);
for (int i = 0; i < pynkwargs; ++i)
{
var keyStr = Runtime.GetManagedString(Runtime.PyList_GetItem(new BorrowedReference(keylist), i));
kwargDict[keyStr] = Runtime.PyList_GetItem(new BorrowedReference(valueList), i).DangerousGetAddress();
}
Runtime.XDecref(keylist);
Runtime.XDecref(valueList);
}
var pynargs = (int)Runtime.PyTuple_Size(args);
var isGeneric = false;
if (info != null)
{
_methods = new MethodBase[1];
_methods.SetValue(info, 0);
}
else
{
_methods = GetMethods();
}
// TODO: Clean up
foreach (MethodBase mi in _methods)
{
if (mi.IsGenericMethod)
{
isGeneric = true;
}
ParameterInfo[] pi = mi.GetParameters();
ArrayList defaultArgList;
bool paramsArray;
if (!MatchesArgumentCount(pynargs, pi, kwargDict, out paramsArray, out defaultArgList))
{
continue;
}
var outs = 0;
var margs = TryConvertArguments(pi, paramsArray, args, pynargs, kwargDict, defaultArgList,
needsResolution: _methods.Length > 1,
outs: out outs);
if (margs == null)
{
continue;
}
object target = null;
if (!mi.IsStatic && inst != IntPtr.Zero)
{
//CLRObject co = (CLRObject)ManagedType.GetManagedObject(inst);
// InvalidCastException: Unable to cast object of type
// 'Python.Runtime.ClassObject' to type 'Python.Runtime.CLRObject'
var co = ManagedType.GetManagedObject(inst) as CLRObject;
// Sanity check: this ensures a graceful exit if someone does
// something intentionally wrong like call a non-static method
// on the class rather than on an instance of the class.
// XXX maybe better to do this before all the other rigmarole.
if (co == null)
{
return(null);
}
target = co.inst;
}
return(new Binding(mi, target, margs, outs));
}
// We weren't able to find a matching method but at least one
// is a generic method and info is null. That happens when a generic
// method was not called using the [] syntax. Let's introspect the
// type of the arguments and use it to construct the correct method.
if (isGeneric && info == null && methodinfo != null)
{
Type[] types = Runtime.PythonArgsToTypeArray(args, true);
MethodInfo mi = MatchParameters(methodinfo, types);
return(Bind(inst, args, kw, mi, null));
}
return(null);
}
internal virtual IntPtr Invoke(IntPtr inst, IntPtr args, IntPtr kw, MethodBase info, MethodInfo[] methodinfo)
{
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}");
}
long argCount = Runtime.PyTuple_Size(args);
value.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_Unicode(type);
if (description != IntPtr.Zero)
{
value.Append(Runtime.GetManagedString(description));
Runtime.XDecref(description);
}
} finally {
Runtime.XDecref(type);
}
}
}
if (argIndex + 1 < argCount)
{
value.Append(", ");
}
}
value.Append(')');
Exceptions.SetError(Exceptions.TypeError, 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 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));
}