|
static private GetManagedString ( |
||
| op | ||
| return | string | |
//====================================================================
// Exceptions __getattribute__ implementation.
// handles Python's args and message attributes
//====================================================================
public static IntPtr tp_getattro(IntPtr ob, IntPtr key)
{
if (!Runtime.PyString_Check(key))
{
Exceptions.SetError(Exceptions.TypeError, "string expected");
return(IntPtr.Zero);
}
string name = Runtime.GetManagedString(key);
if (name == "args")
{
Exception e = ToException(ob);
IntPtr args;
if (e.Message != String.Empty)
{
args = Runtime.PyTuple_New(1);
IntPtr msg = Runtime.PyUnicode_FromString(e.Message);
Runtime.PyTuple_SetItem(args, 0, msg);
}
else
{
args = Runtime.PyTuple_New(0);
}
return(args);
}
if (name == "message")
{
return(ExceptionClassObject.tp_str(ob));
}
return(Runtime.PyObject_GenericGetAttr(ob, key));
}
/// <summary>
/// We __really__ want to avoid using Python objects or APIs when
/// probing for assemblies to load, since our ResolveHandler may be
/// called in contexts where we don't have the Python GIL and can't
/// even safely try to get it without risking a deadlock ;(
/// To work around that, we update a managed copy of sys.path (which
/// is the main thing we care about) when UpdatePath is called. The
/// import hook calls this whenever it knows its about to use the
/// assembly manager, which lets us keep up with changes to sys.path
/// in a relatively lightweight and low-overhead way.
/// </summary>
internal static void UpdatePath()
{
BorrowedReference list = Runtime.PySys_GetObject("path");
var count = Runtime.PyList_Size(list);
var sep = Path.DirectorySeparatorChar;
if (count != pypath.Count)
{
pypath.Clear();
probed.Clear();
for (var i = 0; i < count; i++)
{
BorrowedReference item = Runtime.PyList_GetItem(list, i);
string path = Runtime.GetManagedString(item);
if (path != null)
{
pypath.Add(path == string.Empty ? path : path + sep);
}
}
// for performance we will search for all files in each directory in the path once
Parallel.ForEach(pypath.Where(s =>
{
try
{
lock (filesInPath)
{
// only search in directory if it exists and we haven't already analyzed it
return(Directory.Exists(s) && !filesInPath.ContainsKey(s));
}
}
catch
{
// just in case, file operations can throw
}
return(false);
}), path =>
{
var container = new HashSet <string>();
try
{
foreach (var file in Directory.EnumerateFiles(path)
.Where(file => file.EndsWith(".dll") || file.EndsWith(".exe")))
{
container.Add(Path.GetFileName(file));
}
}
catch
{
// just in case, file operations can throw
}
lock (filesInPath)
{
filesInPath[path] = container;
}
});
}
}
//====================================================================
// MethodBinding __getattribute__ implementation.
//====================================================================
public static IntPtr tp_getattro(IntPtr ob, IntPtr key)
{
MethodBinding self = (MethodBinding)GetManagedObject(ob);
if (!Runtime.PyString_Check(key))
{
Exceptions.SetError(Exceptions.TypeError, "string expected");
return(IntPtr.Zero);
}
string name = Runtime.GetManagedString(key);
if (name == "__doc__")
{
IntPtr doc = self.m.GetDocString();
Runtime.Incref(doc);
return(doc);
}
if (name == "__overloads__")
{
OverloadMapper om = new OverloadMapper(self.m, self.target);
Runtime.Incref(om.pyHandle);
return(om.pyHandle);
}
return(Runtime.PyObject_GenericGetAttr(ob, key));
}
/// <summary>
/// MethodBinding __getattribute__ implementation.
/// </summary>
public static IntPtr tp_getattro(IntPtr ob, IntPtr key)
{
var self = (MethodBinding)GetManagedObject(ob);
if (!Runtime.PyString_Check(key))
{
Exceptions.SetError(Exceptions.TypeError, "string expected");
return(IntPtr.Zero);
}
string name = Runtime.GetManagedString(key);
switch (name)
{
case "__doc__":
IntPtr doc = self.m.GetDocString();
Runtime.XIncref(doc);
return(doc);
// FIXME: deprecate __overloads__ soon...
case "__overloads__":
case "Overloads":
var om = new OverloadMapper(self.m, self.target);
return(om.pyHandle);
default:
return(Runtime.PyObject_GenericGetAttr(ob, key));
}
}
private static void SetConversionError(IntPtr value, Type target)
{
IntPtr ob = Runtime.Interop.PyObject_Repr(value);
string src = Runtime.GetManagedString(ob);
Runtime.XDecref(ob);
Exceptions.SetError(Exceptions.TypeError, $"Cannot convert {src} to {target}");
}
/// <summary>
/// Repr Method
/// </summary>
/// <remarks>
/// Return a string representation of the object. This method is
/// the managed equivalent of the Python expression "repr(object)".
/// </remarks>
public string Repr()
{
IntPtr strval = Runtime.PyObject_Repr(obj);
string result = Runtime.GetManagedString(strval);
Runtime.XDecref(strval);
return(result);
}
/// <summary>
/// ToString Method
/// </summary>
/// <remarks>
/// Return the string representation of the object. This method is
/// the managed equivalent of the Python expression "str(object)".
/// </remarks>
public override string ToString()
{
IntPtr strval = Runtime.PyObject_Unicode(obj);
string result = Runtime.GetManagedString(strval);
Runtime.XDecref(strval);
return(result);
}
//====================================================================
// ModuleObject __getattribute__ implementation. Module attributes
// are always either classes or sub-modules representing subordinate
// namespaces. CLR modules implement a lazy pattern - the sub-modules
// and classes are created when accessed and cached for future use.
//====================================================================
public static IntPtr tp_getattro(IntPtr ob, IntPtr key)
{
ModuleObject self = (ModuleObject)GetManagedObject(ob);
if (!Runtime.PyString_Check(key))
{
Exceptions.SetError(Exceptions.TypeError, "string expected");
return(IntPtr.Zero);
}
IntPtr op = Runtime.PyDict_GetItem(self.dict, key);
if (op != IntPtr.Zero)
{
Runtime.Incref(op);
return(op);
}
string name = Runtime.GetManagedString(key);
if (name == "__dict__")
{
Runtime.Incref(self.dict);
return(self.dict);
}
ManagedType attr = self.GetAttribute(name, true);
if (attr == null)
{
Exceptions.SetError(Exceptions.AttributeError, name);
return(IntPtr.Zero);
}
// XXX - hack required to recognize exception types. These types
// may need to be wrapped in old-style class wrappers in versions
// of Python where new-style classes cannot be used as exceptions.
if (Runtime.wrap_exceptions)
{
if (attr is ExceptionClassObject)
{
ExceptionClassObject c = attr as ExceptionClassObject;
if (c != null)
{
IntPtr p = attr.pyHandle;
IntPtr r = Exceptions.GetExceptionClassWrapper(p);
Runtime.PyDict_SetItemString(self.dict, name, r);
Runtime.Incref(r);
return(r);
}
}
}
Runtime.Incref(attr.pyHandle);
return(attr.pyHandle);
}
public IncorrectRefCountException(IntPtr ptr)
{
PyPtr = ptr;
IntPtr pyname = Runtime.PyObject_Unicode(PyPtr);
string name = Runtime.GetManagedString(pyname);
Runtime.XDecref(pyname);
_message = $"<{name}> may has a incorrect ref count";
}
public static string GetManagedString(IntPtr op)
{
string s;
if (TryGetInterned(op, out s))
{
return(s);
}
return(Runtime.GetManagedString(op));
}
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 void SetConversionError(IntPtr value, Type target)
{
IntPtr ob = Runtime.PyObject_Repr(value);
string src = Runtime.GetManagedString(ob);
Runtime.Decref(ob);
string error = String.Format(
"Cannot convert {0} to {1}", src, target
);
Exceptions.SetError(Exceptions.TypeError, error);
}
private static void SetConversionError(IntPtr value, Type target)
{
// PyObject_Repr might clear the error
Runtime.PyErr_Fetch(out var causeType, out var causeVal, out var causeTrace);
IntPtr ob = Runtime.PyObject_Repr(value);
string src = Runtime.GetManagedString(ob);
Runtime.XDecref(ob);
Runtime.PyErr_Restore(causeType.StealNullable(), causeVal.StealNullable(), causeTrace.StealNullable());
Exceptions.RaiseTypeError($"Cannot convert {src} to {target}");
}
public new static int tp_setattro(IntPtr ob, IntPtr key, IntPtr val)
{
var managedKey = Runtime.GetManagedString(key);
if ((settableAttributes.Contains(managedKey)) ||
(ManagedType.GetManagedObject(val)?.GetType() == typeof(ModuleObject)))
{
var self = (ModuleObject)ManagedType.GetManagedObject(ob);
return(Runtime.PyDict_SetItem(self.dict, key, val));
}
return(ExtensionType.tp_setattro(ob, key, val));
}
private static bool IsLoadAll(BorrowedReference fromList)
{
if (CLRModule.preload)
{
return(false);
}
if (Runtime.PySequence_Size(fromList) != 1)
{
return(false);
}
using var fp = Runtime.PySequence_GetItem(fromList, 0);
return(Runtime.GetManagedString(fp) == "*");
}
/// <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(BorrowedReference inst, BorrowedReference args, BorrowedReference kw, MethodBase?info, MethodBase[]?methodinfo)
{
// loop to find match, return invoker w/ or w/o error
var kwargDict = new Dictionary <string, PyObject>();
if (kw != null)
{
nint pynkwargs = Runtime.PyDict_Size(kw);
using var keylist = Runtime.PyDict_Keys(kw);
using var valueList = Runtime.PyDict_Values(kw);
for (int i = 0; i < pynkwargs; ++i)
{
var keyStr = Runtime.GetManagedString(Runtime.PyList_GetItem(keylist.Borrow(), i));
BorrowedReference value = Runtime.PyList_GetItem(valueList.Borrow(), i);
kwargDict[keyStr !] = new PyObject(value);
private void StoreSearchPaths()
{
var currentSysPath = GetSysPaths();
_sysPaths = new List <string>();
long itemsCount = currentSysPath.Length();
for (long i = 0; i < itemsCount; i++)
{
BorrowedReference item =
CpyRuntime.PyList_GetItem(currentSysPath.Handle, i);
string path = CpyRuntime.GetManagedString(item);
_sysPaths.Add(path);
}
}
public static void Print(string msg, BorrowedReference member)
{
string result = msg;
result += " ";
if (member == null)
{
Console.WriteLine("null arg to print");
}
using var ob = Runtime.PyObject_Repr(member);
result += Runtime.GetManagedString(ob.BorrowOrThrow());
result += " ";
Console.WriteLine(result);
}
/// <summary>
/// ModuleObject __getattribute__ implementation. Module attributes
/// are always either classes or sub-modules representing subordinate
/// namespaces. CLR modules implement a lazy pattern - the sub-modules
/// and classes are created when accessed and cached for future use.
/// </summary>
public static IntPtr tp_getattro(IntPtr ob, IntPtr key)
{
var self = (ModuleObject)GetManagedObject(ob);
if (!Runtime.PyString_Check(key))
{
Exceptions.SetError(Exceptions.TypeError, "string expected");
return(IntPtr.Zero);
}
IntPtr op = Runtime.PyDict_GetItem(self.dict, key);
if (op != IntPtr.Zero)
{
Runtime.XIncref(op);
return(op);
}
string name = Runtime.GetManagedString(key);
if (name == "__dict__")
{
Runtime.XIncref(self.dict);
return(self.dict);
}
ManagedType attr = null;
try
{
attr = self.GetAttribute(name, true);
}
catch (Exception e)
{
Exceptions.SetError(e);
return(IntPtr.Zero);
}
if (attr == null)
{
Exceptions.SetError(Exceptions.AttributeError, name);
return(IntPtr.Zero);
}
Runtime.XIncref(attr.pyHandle);
return(attr.pyHandle);
}
private static bool IsLoadAll(IntPtr fromList)
{
if (CLRModule.preload)
{
return(false);
}
if (Runtime.PySequence_Size(fromList) != 1)
{
return(false);
}
IntPtr fp = Runtime.PySequence_GetItem(fromList, 0);
bool res = Runtime.GetManagedString(fp) == "*";
Runtime.XDecref(fp);
return(res);
}
private static bool IsLoadAll(BorrowedReference fromList)
{
if (fromList == null)
{
throw new ArgumentNullException(nameof(fromList));
}
if (CLRModule.preload)
{
return(false);
}
if (Runtime.PySequence_Size(fromList) != 1)
{
return(false);
}
using var fp = Runtime.PySequence_GetItem(fromList, 0);
return(Runtime.GetManagedString(fp) == "*");
}
public static void Print(string msg, params IntPtr[] args)
{
string result = msg;
result += " ";
foreach (IntPtr t in args)
{
if (t == IntPtr.Zero)
{
Console.WriteLine("null arg to print");
}
IntPtr ob = Runtime.PyObject_Repr(t);
result += Runtime.GetManagedString(ob);
Runtime.XDecref(ob);
result += " ";
}
Console.WriteLine(result);
}
public static void Print(string msg, params IntPtr[] args)
{
string result = msg;
result += " ";
for (int i = 0; i < args.Length; i++)
{
if (args[i] == IntPtr.Zero)
{
Console.WriteLine("null arg to print");
}
IntPtr ob = Runtime.PyObject_Repr(args[i]);
result += Runtime.GetManagedString(ob);
Runtime.Decref(ob);
result += " ";
}
Console.WriteLine(result);
return;
}
/// <summary>
/// Descriptor __getattribute__ implementation.
/// </summary>
public static IntPtr tp_getattro(IntPtr ob, IntPtr key)
{
var self = (MethodObject)GetManagedObject(ob);
if (!Runtime.PyString_Check(key))
{
return(Exceptions.RaiseTypeError("string expected"));
}
string name = Runtime.GetManagedString(key);
if (name == "__doc__")
{
IntPtr doc = self.GetDocString();
Runtime.XIncref(doc);
return(doc);
}
return(Runtime.PyObject_GenericGetAttr(ob, key));
}
/// <summary>
/// We __really__ want to avoid using Python objects or APIs when
/// probing for assemblies to load, since our ResolveHandler may be
/// called in contexts where we don't have the Python GIL and can't
/// even safely try to get it without risking a deadlock ;(
/// To work around that, we update a managed copy of sys.path (which
/// is the main thing we care about) when UpdatePath is called. The
/// import hook calls this whenever it knows its about to use the
/// assembly manager, which lets us keep up with changes to sys.path
/// in a relatively lightweight and low-overhead way.
/// </summary>
internal static void UpdatePath()
{
IntPtr list = Runtime.Interop.PySys_GetObject("path");
int count = Runtime.Interop.PyList_Size(list);
if (count != pypath.Count)
{
pypath.Clear();
probed.Clear();
for (var i = 0; i < count; i++)
{
IntPtr item = Runtime.Interop.PyList_GetItem(list, i);
string path = Runtime.GetManagedString(item);
if (path != null)
{
pypath.Add(path);
}
}
}
}
public PythonException() : base()
{
Runtime.PyErr_Fetch(ref _pyType, ref _pyValue, ref _pyTB);
Runtime.Incref(_pyType);
Runtime.Incref(_pyValue);
Runtime.Incref(_pyTB);
IntPtr gs = PythonEngine.AcquireLock();
if ((_pyType != IntPtr.Zero) && (_pyValue != IntPtr.Zero))
{
string type = new PyObject(_pyType).GetAttr("__name__").ToString();
string message = Runtime.GetManagedString(_pyValue);
_message = type + " : " + message;
}
if (_pyTB != IntPtr.Zero)
{
PyObject tb_module = PythonEngine.ImportModule("traceback");
_tb = tb_module.InvokeMethod("format_tb", new PyObject(_pyTB)).ToString();
}
PythonEngine.ReleaseLock(gs);
}
private static void SetConversionError(BorrowedReference value, Type target)
{
// PyObject_Repr might clear the error
Runtime.PyErr_Fetch(out var causeType, out var causeVal, out var causeTrace);
var ob = Runtime.PyObject_Repr(value);
string src = "'object has no repr'";
if (ob.IsNull())
{
Exceptions.Clear();
}
else
{
src = Runtime.GetManagedString(ob.Borrow()) ?? src;
}
ob.Dispose();
Runtime.PyErr_Restore(causeType.StealNullable(), causeVal.StealNullable(), causeTrace.StealNullable());
Exceptions.RaiseTypeError($"Cannot convert {src} to {target}");
}
/// <summary>
/// Expose the wrapped implementation through attributes in both
/// converted/encoded (__implementation__) and raw (__raw_implementation__) form.
/// </summary>
public static IntPtr tp_getattro(IntPtr ob, IntPtr key)
{
var clrObj = (CLRObject)GetManagedObject(ob);
if (!Runtime.PyString_Check(key))
{
return(Exceptions.RaiseTypeError("string expected"));
}
string name = Runtime.GetManagedString(key);
if (name == "__implementation__")
{
return(Converter.ToPython(clrObj.inst));
}
else if (name == "__raw_implementation__")
{
return(CLRObject.GetInstHandle(clrObj.inst));
}
return(Runtime.PyObject_GenericGetAttr(ob, key));
}
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);
}
}