PySequence_GetItem(IntPtr objPtr, int idx)
{
try
{
if (CPyMarshal.ReadPtrField(objPtr, typeof(PyObject), "ob_type") == this.PyTuple_Type)
{
IntPtr storagePtr = CPyMarshal.Offset(objPtr, Marshal.OffsetOf(typeof(PyTupleObject), "ob_item"));
int size = CPyMarshal.ReadIntField(objPtr, typeof(PyTupleObject), "ob_size");
if (idx >= size)
{
throw PythonOps.IndexError("PySequence_GetItem: tuple index {0} out of range", idx);
}
IntPtr slotPtr = CPyMarshal.Offset(storagePtr, idx * CPyMarshal.PtrSize);
IntPtr itemPtr = CPyMarshal.ReadPtr(slotPtr);
uint refcnt = CPyMarshal.ReadUIntField(itemPtr, typeof(PyObject), "ob_refcnt");
CPyMarshal.WriteUIntField(itemPtr, typeof(PyObject), "ob_refcnt", refcnt + 1);
return(itemPtr);
}
object sequence = this.Retrieve(objPtr);
object getitem;
if (PythonOps.TryGetBoundAttr(sequence, "__getitem__", out getitem))
{
return(this.Store(PythonCalls.Call(getitem, idx)));
}
throw PythonOps.TypeError("PySequence_GetItem: failed to convert {0} to sequence", sequence);
}
catch (Exception e)
{
this.LastException = e;
return(IntPtr.Zero);
}
}
_PyObject_New(IntPtr typePtr)
{
uint tp_basicsize = CPyMarshal.ReadUIntField(typePtr, typeof(PyTypeObject), "tp_basicsize");
IntPtr objPtr = this.allocator.Alloc(tp_basicsize);
CPyMarshal.Zero(objPtr, tp_basicsize);
return(this.PyObject_Init(objPtr, typePtr));
}
PyList_SetItem(IntPtr listPtr, int index, IntPtr itemPtr)
{
if (!this.HasPtr(listPtr))
{
this.DecRef(itemPtr);
return(-1);
}
IntPtr typePtr = CPyMarshal.ReadPtrField(listPtr, typeof(PyObject), "ob_type");
if (typePtr != this.PyList_Type)
{
this.DecRef(itemPtr);
return(-1);
}
uint length = CPyMarshal.ReadUIntField(listPtr, typeof(PyListObject), "ob_size");
if (index < 0 || index >= length)
{
this.DecRef(itemPtr);
return(-1);
}
IntPtr dataPtr = CPyMarshal.ReadPtrField(listPtr, typeof(PyListObject), "ob_item");
IntPtr oldItemPtrPtr = CPyMarshal.Offset(dataPtr, (int)(index * CPyMarshal.PtrSize));
IntPtr oldItemPtr = CPyMarshal.ReadPtr(oldItemPtrPtr);
if (oldItemPtr != IntPtr.Zero)
{
this.DecRef(oldItemPtr);
}
CPyMarshal.WritePtr(oldItemPtrPtr, itemPtr);
if (this.map.HasPtr(listPtr))
{
object item = this.Retrieve(itemPtr);
List list = (List)this.Retrieve(listPtr);
list[index] = item;
}
return(0);
}
