//===================================================================
// Initialization performed on startup of the Python runtime.
//===================================================================
internal static void Initialize()
{
#if (PYTHON32 || PYTHON33 || PYTHON34 || PYTHON35)
exceptions_module = Runtime.PyImport_ImportModule("builtins");
#else
exceptions_module = Runtime.PyImport_ImportModule("exceptions");
#endif
Exceptions.ErrorCheck(exceptions_module);
warnings_module = Runtime.PyImport_ImportModule("warnings");
Exceptions.ErrorCheck(warnings_module);
Type type = typeof(Exceptions);
foreach (FieldInfo fi in type.GetFields(BindingFlags.Public |
BindingFlags.Static))
{
IntPtr op = Runtime.PyObject_GetAttrString(exceptions_module, fi.Name);
if (op != IntPtr.Zero)
{
fi.SetValue(type, op);
}
else
{
fi.SetValue(type, IntPtr.Zero);
DebugUtil.Print("Unknown exception: " + fi.Name);
}
}
Runtime.PyErr_Clear();
}
/// <summary>
/// Initialization performed on startup of the Python runtime.
/// </summary>
internal static void Initialize()
{
string exceptionsModuleName = Runtime.IsPython3 ? "builtins" : "exceptions";
exceptions_module = Runtime.PyImport_ImportModule(exceptionsModuleName);
Exceptions.ErrorCheck(exceptions_module);
warnings_module = Runtime.PyImport_ImportModule("warnings");
Exceptions.ErrorCheck(warnings_module);
Type type = typeof(Exceptions);
foreach (FieldInfo fi in type.GetFields(BindingFlags.Public | BindingFlags.Static))
{
IntPtr op = Runtime.PyObject_GetAttrString(exceptions_module, fi.Name);
if (op != IntPtr.Zero)
{
fi.SetValue(type, op);
}
else
{
fi.SetValue(type, IntPtr.Zero);
DebugUtil.Print($"Unknown exception: {fi.Name}");
}
}
Runtime.PyErr_Clear();
}
protected override void OnSave(InterDomainContext context)
{
base.OnSave(context);
System.Diagnostics.Debug.Assert(dict == GetObjectDict(pyHandle));
foreach (var attr in cache.Values)
{
Runtime.XIncref(attr.pyHandle);
}
// Decref twice in tp_clear, equilibrate them.
Runtime.XIncref(dict);
Runtime.XIncref(dict);
// destroy the cache(s)
foreach (var pair in cache)
{
if ((Runtime.PyDict_DelItemString(DictRef, pair.Key) == -1) &&
(Exceptions.ExceptionMatches(Exceptions.KeyError)))
{
// Trying to remove a key that's not in the dictionary
// raises an error. We don't care about it.
Runtime.PyErr_Clear();
}
else if (Exceptions.ErrorOccurred())
{
throw new PythonException();
}
pair.Value.DecrRefCount();
}
cache.Clear();
}
internal static void SetupExceptionHack()
{
ns_exc = ClassManager.GetClass(typeof(Exception)).pyHandle;
cache = new Hashtable();
string code =
"import exceptions\n" +
"class Exception(exceptions.Exception):\n" +
" _class = None\n" +
" _inner = None\n" +
"\n" +
" def __init__(self, *args, **kw):\n" +
" inst = self.__class__._class(*args, **kw)\n" +
" self.__dict__['_inner'] = inst\n" +
" exceptions.Exception.__init__(self, *args, **kw)\n" +
"\n" +
" def __getattr__(self, name, _marker=[]):\n" +
" inner = self.__dict__['_inner']\n" +
" v = getattr(inner, name, _marker)\n" +
" if v is not _marker:\n" +
" return v\n" +
" v = self.__dict__.get(name, _marker)\n" +
" if v is not _marker:\n" +
" return v\n" +
" raise AttributeError(name)\n" +
"\n" +
" def __setattr__(self, name, value):\n" +
" inner = self.__dict__['_inner']\n" +
" setattr(inner, name, value)\n" +
"\n" +
" def __str__(self):\n" +
" inner = self.__dict__.get('_inner')\n" +
" msg = getattr(inner, 'Message', '')\n" +
" st = getattr(inner, 'StackTrace', '')\n" +
" st = st and '\\n' + st or ''\n" +
" return msg + st\n" +
"\n";
IntPtr dict = Runtime.PyDict_New();
IntPtr builtins = Runtime.PyEval_GetBuiltins();
Runtime.PyDict_SetItemString(dict, "__builtins__", builtins);
IntPtr namestr = Runtime.PyString_FromString("System");
Runtime.PyDict_SetItemString(dict, "__name__", namestr);
Runtime.Decref(namestr);
Runtime.PyDict_SetItemString(dict, "__file__", Runtime.PyNone);
Runtime.PyDict_SetItemString(dict, "__doc__", Runtime.PyNone);
IntPtr flag = Runtime.Py_file_input;
IntPtr done = Runtime.PyRun_String(code, flag, dict, dict);
os_exc = Runtime.PyDict_GetItemString(dict, "Exception");
Runtime.PyObject_SetAttrString(os_exc, "_class", ns_exc);
Runtime.PyErr_Clear();
}
/// <summary>
/// IsSubclass Method
/// </summary>
/// <remarks>
/// Return true if the object is identical to or derived from the
/// given Python type or class. This method always succeeds.
/// </remarks>
public bool IsSubclass(PyObject typeOrClass)
{
int r = Runtime.PyObject_IsSubclass(obj, typeOrClass.obj);
if (r < 0)
{
Runtime.PyErr_Clear();
return(false);
}
return(r != 0);
}
/// <summary>
/// GetAttr Method
/// </summary>
/// <remarks>
/// Returns the named attribute of the Python object, or the given
/// default object if the attribute access fails. The name argument
/// is a PyObject wrapping a Python string or unicode object.
/// </remarks>
public PyObject GetAttr(PyObject name, PyObject _default)
{
IntPtr op = Runtime.PyObject_GetAttr(obj, name.obj);
if (op == IntPtr.Zero)
{
Runtime.PyErr_Clear();
return(_default);
}
return(new PyObject(op));
}
/// <summary>
/// Length Method
/// </summary>
/// <remarks>
/// Returns the length for objects that support the Python sequence
/// protocol, or 0 if the object does not support the protocol.
/// </remarks>
public virtual int Length()
{
int s = Runtime.PyObject_Size(obj);
if (s < 0)
{
Runtime.PyErr_Clear();
return(0);
}
return(s);
}
/// <summary>
/// Index Method
/// </summary>
///
/// <remarks>
/// Return the index of the given item in the sequence, or -1 if
/// the item does not appear in the sequence.
/// </remarks>
public int Index(PyObject item)
{
int r = Runtime.PySequence_Index(obj, item.obj);
if (r < 0)
{
Runtime.PyErr_Clear();
return(-1);
}
return(r);
}
/// <summary>
/// GetAttr Method
/// </summary>
/// <remarks>
/// Returns the named attribute of the Python object, or the given
/// default object if the attribute access fails. The name argument
/// is a PyObject wrapping a Python string or unicode object.
/// </remarks>
public PyObject GetAttr(PyObject name, PyObject _default)
{
if (name == null)
{
throw new ArgumentNullException(nameof(name));
}
IntPtr op = Runtime.PyObject_GetAttr(obj, name.obj);
if (op == IntPtr.Zero)
{
Runtime.PyErr_Clear();
return(_default);
}
return(new PyObject(op));
}
/// <summary>
/// IsSubclass Method
/// </summary>
/// <remarks>
/// Return true if the object is identical to or derived from the
/// given Python type or class. This method always succeeds.
/// </remarks>
public bool IsSubclass(PyObject typeOrClass)
{
if (typeOrClass == null)
{
throw new ArgumentNullException(nameof(typeOrClass));
}
int r = Runtime.PyObject_IsSubclass(obj, typeOrClass.obj);
if (r < 0)
{
Runtime.PyErr_Clear();
return(false);
}
return(r != 0);
}
internal bool IsSubclass(BorrowedReference typeOrClass)
{
if (typeOrClass.IsNull)
{
throw new ArgumentNullException(nameof(typeOrClass));
}
int r = Runtime.PyObject_IsSubclass(Reference, typeOrClass);
if (r < 0)
{
Runtime.PyErr_Clear();
return(false);
}
return(r != 0);
}
internal static void SaveRuntimeData(RuntimeDataStorage storage)
{
var contexts = storage.AddValue("contexts",
new Dictionary <IntPtr, InterDomainContext>());
storage.AddValue("cache", cache);
foreach (var cls in cache)
{
if (!cls.Key.Valid)
{
// Don't serialize an invalid class
continue;
}
// This incref is for cache to hold the cls,
// thus no need for decreasing it at RestoreRuntimeData.
Runtime.XIncref(cls.Value.pyHandle);
var context = contexts[cls.Value.pyHandle] = new InterDomainContext();
cls.Value.Save(context);
// Remove all members added in InitBaseClass.
// this is done so that if domain reloads and a member of a
// reflected dotnet class is removed, it is removed from the
// Python object's dictionary tool; thus raising an AttributeError
// instead of a TypeError.
// Classes are re-initialized on in RestoreRuntimeData.
var dict = new BorrowedReference(Marshal.ReadIntPtr(cls.Value.tpHandle, TypeOffset.tp_dict));
foreach (var member in cls.Value.dotNetMembers)
{
// No need to decref the member, the ClassBase instance does
// not own the reference.
if ((Runtime.PyDict_DelItemString(dict, member) == -1) &&
(Exceptions.ExceptionMatches(Exceptions.KeyError)))
{
// Trying to remove a key that's not in the dictionary
// raises an error. We don't care about it.
Runtime.PyErr_Clear();
}
else if (Exceptions.ErrorOccurred())
{
throw new PythonException();
}
}
// We modified the Type object, notify it we did.
Runtime.PyType_Modified(cls.Value.tpHandle);
}
}
//====================================================================
// Metatype __call__ implementation. This is needed to ensure correct
// initialization (__init__ support), because the tp_call we inherit
// from PyType_Type won't call __init__ for metatypes it doesnt know.
//====================================================================
public static IntPtr tp_call(IntPtr tp, IntPtr args, IntPtr kw)
{
IntPtr func = Marshal.ReadIntPtr(tp, TypeOffset.tp_new);
if (func == IntPtr.Zero)
{
return(Exceptions.RaiseTypeError("invalid object"));
}
IntPtr obj = NativeCall.Call_3(func, tp, args, kw);
if (obj == IntPtr.Zero)
{
return(IntPtr.Zero);
}
IntPtr py__init__ = Runtime.PyString_FromString("__init__");
IntPtr type = Runtime.PyObject_TYPE(obj);
IntPtr init = Runtime._PyType_Lookup(type, py__init__);
Runtime.Decref(py__init__);
Runtime.PyErr_Clear();
if (init != IntPtr.Zero)
{
IntPtr bound = Runtime.GetBoundArgTuple(obj, args);
if (bound == IntPtr.Zero)
{
Runtime.Decref(obj);
return(IntPtr.Zero);
}
IntPtr result = Runtime.PyObject_Call(init, bound, kw);
Runtime.Decref(bound);
if (result == IntPtr.Zero)
{
Runtime.Decref(obj);
return(IntPtr.Zero);
}
Runtime.Decref(result);
}
return(obj);
}
/// <summary>
/// Initializes given object, or returns <c>false</c> and sets Python error on failure
/// </summary>
public virtual bool Init(BorrowedReference obj, BorrowedReference args, BorrowedReference kw)
{
// this just calls obj.__init__(*args, **kw)
using var init = Runtime.PyObject_GetAttr(obj, PyIdentifier.__init__);
Runtime.PyErr_Clear();
if (!init.IsNull())
{
using var result = Runtime.PyObject_Call(init.Borrow(), args, kw);
if (result.IsNull())
{
return(false);
}
}
return(true);
}
#pragma warning restore CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider declaring as nullable.
/// <summary>
/// Initialization performed on startup of the Python runtime.
/// </summary>
internal static void Initialize()
{
string exceptionsModuleName = "builtins";
exceptions_module = PyModule.Import(exceptionsModuleName);
warnings_module = PyModule.Import("warnings");
Type type = typeof(Exceptions);
foreach (FieldInfo fi in type.GetFields(BindingFlags.Public | BindingFlags.Static))
{
using var op = Runtime.PyObject_GetAttrString(exceptions_module.obj, fi.Name);
if ([email protected]())
{
fi.SetValue(type, op.MoveToPyObject());
}
else
{
fi.SetValue(type, null);
DebugUtil.Print($"Unknown exception: {fi.Name}");
}
}
Runtime.PyErr_Clear();
}
//===================================================================
// Initialization performed on startup of the Python runtime.
//===================================================================
internal static void Initialize()
{
IntPtr module = Runtime.PyImport_ImportModule("exceptions");
Type type = typeof(Exceptions);
foreach (FieldInfo fi in type.GetFields(BindingFlags.Public |
BindingFlags.Static))
{
IntPtr op = Runtime.PyObject_GetAttrString(module, fi.Name);
if (op != IntPtr.Zero)
{
fi.SetValue(type, op);
}
}
Runtime.Decref(module);
Runtime.PyErr_Clear();
if (Runtime.wrap_exceptions)
{
SetupExceptionHack();
}
}
private static IntPtr CallInit(IntPtr obj, IntPtr args, IntPtr kw)
{
var init = Runtime.PyObject_GetAttr(obj, PyIdentifier.__init__);
Runtime.PyErr_Clear();
if (init != IntPtr.Zero)
{
IntPtr result = Runtime.PyObject_Call(init, args, kw);
Runtime.XDecref(init);
if (result == IntPtr.Zero)
{
Runtime.XDecref(obj);
return(IntPtr.Zero);
}
Runtime.XDecref(result);
}
return(obj);
}
/// <summary>
/// Metatype __call__ implementation. This is needed to ensure correct
/// initialization (__init__ support), because the tp_call we inherit
/// from PyType_Type won't call __init__ for metatypes it doesn't know.
/// </summary>
public static IntPtr tp_call(IntPtr tp, IntPtr args, IntPtr kw)
{
IntPtr func = Marshal.ReadIntPtr(tp, TypeOffset.tp_new);
if (func == IntPtr.Zero)
{
return(Exceptions.RaiseTypeError("invalid object"));
}
IntPtr obj = NativeCall.Call_3(func, tp, args, kw);
if (obj == IntPtr.Zero)
{
return(IntPtr.Zero);
}
var init = Runtime.PyObject_GetAttrString(obj, "__init__");
Runtime.PyErr_Clear();
if (init != IntPtr.Zero)
{
IntPtr result = Runtime.PyObject_Call(init, args, kw);
Runtime.XDecref(init);
if (result == IntPtr.Zero)
{
Runtime.XDecref(obj);
return(IntPtr.Zero);
}
Runtime.XDecref(result);
}
return(obj);
}
/// <summary>
/// Clear Method
/// </summary>
/// <remarks>
/// Clear any exception that has been set in the Python runtime.
/// </remarks>
public static void Clear()
{
Runtime.PyErr_Clear();
}
internal static void Shutdown()
{
Instance.DisposeAll();
Instance.CallPendingFinalizers();
Runtime.PyErr_Clear();
}
/// <summary>
/// MethodBinding __call__ implementation.
/// </summary>
public static IntPtr tp_call(IntPtr ob, IntPtr args, IntPtr kw)
{
var 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)
{
var len = Runtime.PyTuple_Size(args); //FIXME: Never used
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.
var disposeList = new List <IntPtr>();
try
{
IntPtr target = self.target;
if (target == IntPtr.Zero && !self.m.IsStatic())
{
var len = Runtime.PyTuple_Size(args);
if (len < 1)
{
Exceptions.SetError(Exceptions.TypeError, "not enough arguments");
return(IntPtr.Zero);
}
target = Runtime.PyTuple_GetItem(args, 0);
Runtime.XIncref(target);
disposeList.Add(target);
args = Runtime.PyTuple_GetSlice(args, 1, len);
disposeList.Add(args);
}
// if the class is a IPythonDerivedClass and target is not the same as self.targetType
// (eg if calling the base class method) then call the original base class method instead
// of the target method.
IntPtr superType = IntPtr.Zero;
if (Runtime.PyObject_TYPE(target) != self.targetType)
{
var inst = GetManagedObject(target) as CLRObject;
if (inst?.inst is IPythonDerivedType)
{
var baseType = GetManagedObject(self.targetType) as ClassBase;
if (baseType != null)
{
string baseMethodName = "_" + baseType.type.Name + "__" + self.m.name;
IntPtr baseMethod = Runtime.PyObject_GetAttrString(target, baseMethodName);
if (baseMethod != IntPtr.Zero)
{
var baseSelf = GetManagedObject(baseMethod) as MethodBinding;
if (baseSelf != null)
{
self = baseSelf;
}
Runtime.XDecref(baseMethod);
}
else
{
Runtime.PyErr_Clear();
}
}
}
}
return(self.m.Invoke(target, args, kw, self.info));
}
finally
{
foreach (IntPtr ptr in disposeList)
{
Runtime.XDecref(ptr);
}
}
}
