/// <summary>
/// Returns the Python exception associated with a CLR exception
/// creating a new Python exception if necessary.
/// </summary>
public static object ToPython(Exception clrException)
{
if (clrException.Data.Contains(pythonExceptionKey))
{
// this is already associated w/ a CLR exception.
return(clrException.Data[pythonExceptionKey]);
}
ThreadAbortException ta = clrException as ThreadAbortException;
if (ta != null)
{
// transform TA w/ our reason into a KeyboardInterrupt exception.
PythonKeyboardInterrupt reason = ta.ExceptionState as PythonKeyboardInterrupt;
if (reason != null)
{
return(ToPython(reason));
}
}
object res;
ICustomExceptionConversion ice = clrException as ICustomExceptionConversion;
if (ice != null)
{
res = ice.ToPythonException();
}
else
{
// this is an exception raised from CLR space crossing
// into Python space. We need to create a new Python
// exception.
DynamicType pythonType = GetPythonTypeFromCLR(clrException.GetType());
// create new instance of Python type and save it (we do this directly
// as we're calling during low-stack situations and don't want to invoke
// a python method that would do a stack-check).
res = new OldInstance((OldClass)pythonType);
Ops.SetAttr(DefaultContext.Default, res, SymbolTable.ExceptionMessage, clrException.Message);
if (clrException.Message != null)
{
Ops.SetAttr(DefaultContext.Default, res, SymbolTable.Arguments, Tuple.MakeTuple(clrException.Message));
}
else
{
Ops.SetAttr(DefaultContext.Default, res, SymbolTable.Arguments, Tuple.MakeTuple());
}
//'filename', 'lineno','offset', 'print_file_and_line', 'text'
}
OldInstance exRes = res as OldInstance;
if (exRes != null)
{
AssociateExceptions(clrException, exRes);
}
return(res);
}
public object Call(object[] args, string[] names)
{
OldInstance inst = new OldInstance(this);
object meth;
if (Ops.TryGetAttr(inst, SymbolTable.Init, out meth))
{
Ops.Call(meth, args, names);
}
else
{
Debug.Assert(names.Length != 0);
throw Ops.TypeError("this constructor takes no arguments");
}
return(inst);
}
public object Call(params object[] args)
{
OldInstance inst = new OldInstance(this);
object value;
// lookup the slot directly - we don't go through __getattr__
// until after the instance is created.
if (TryLookupSlot(SymbolTable.Init, out value))
{
Ops.Call(Ops.GetDescriptor(value, inst, null), args);
}
else if (args.Length > 0)
{
throw Ops.TypeError("this constructor takes no arguments");
}
return(inst);
}
public object CompareTo(object other)
{
OldInstance oiOther = other as OldInstance;
IRichComparable irc;
object res;
// try __cmp__ first if we're comparing two old classes (even if they're different types)
if (oiOther != null)
{
res = InternalCompare(SymbolTable.Cmp, other);
if (res != Ops.NotImplemented)
{
return(res);
}
res = oiOther.InternalCompare(SymbolTable.Cmp, this);
if (res != Ops.NotImplemented)
{
return(((int)res) * -1);
}
irc = oiOther;
}
else
{
irc = other as IRichComparable;
}
// next try equals, return 0 if we match.
res = RichEquals(other);
if (res != Ops.NotImplemented)
{
if (Ops.IsTrue(res))
{
return(0);
}
}
else if (irc != null)
{
res = irc.RichEquals(this);
if (res != Ops.NotImplemented && Ops.IsTrue(res))
{
return(0);
}
}
// next try less than
res = LessThan(other);
if (res != Ops.NotImplemented)
{
if (Ops.IsTrue(res))
{
return(-1);
}
}
else if (irc != null)
{
res = irc.GreaterThan(this);
if (res != Ops.NotImplemented && Ops.IsTrue(res))
{
return(-1);
}
}
// finally try greater than
res = GreaterThan(other);
if (res != Ops.NotImplemented)
{
if (Ops.IsTrue(res))
{
return(1);
}
}
else if (irc != null)
{
res = irc.LessThan(this);
if (res != Ops.NotImplemented && Ops.IsTrue(res))
{
return(1);
}
}
if (oiOther == null)
{
// finally try __cmp__ if our types are different
res = InternalCompare(SymbolTable.Cmp, other);
if (res != Ops.NotImplemented)
{
return(res);
}
// try the other side...
res = Ops.GetDynamicType(other).CompareTo(other, this);
if (res != Ops.NotImplemented)
{
return(((int)res) * -1);
}
}
return(Ops.NotImplemented);
}
public OldInstanceFinalizer(OldInstance inst)
{
Debug.Assert(inst != null);
instance = inst;
}
public override ICollection <MemberDoc> GetMembers(object value)
{
List <MemberDoc> res = new List <MemberDoc>();
PythonModule mod = value as PythonModule;
if (mod != null)
{
foreach (var kvp in mod.__dict__)
{
AddMember(res, kvp, false);
}
return(res);
}
NamespaceTracker ns = value as NamespaceTracker;
if (ns != null)
{
foreach (var v in ns)
{
AddMember(
res,
new KeyValuePair <object, object>(
v.Key,
Importer.MemberTrackerToPython(_context.SharedClsContext, v.Value)
),
false
);
}
}
else
{
OldInstance oi = value as OldInstance;
if (oi != null)
{
foreach (var member in oi.Dictionary)
{
AddMember(res, member, false);
}
AddOldClassMembers(res, oi._class);
}
else
{
PythonType pt = value as PythonType;
if (pt != null)
{
foreach (PythonType type in pt.ResolutionOrder)
{
foreach (var member in type.GetMemberDictionary(_context.SharedContext))
{
AddMember(res, member, true);
}
}
}
else
{
OldClass oc = value as OldClass;
if (oc != null)
{
AddOldClassMembers(res, oc);
}
else
{
pt = DynamicHelpers.GetPythonType(value);
foreach (var member in pt.GetMemberDictionary(_context.SharedContext))
{
AddMember(res, member, true);
}
}
}
IPythonObject ipo = value as IPythonObject;
if (ipo != null && ipo.Dict != null)
{
foreach (var member in ipo.Dict)
{
AddMember(res, member, false);
}
}
}
}
return(res.ToArray());
}