8000 Improve method binding by koubaa · Pull Request #974 · pythonnet/pythonnet · GitHub
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Improve method binding #974

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21528ee
Add test for ienumerable method
koubaa Oct 21, 2019
b4d60c6
Add tests for collection & task/action from function
koubaa Dec 1, 2019
3f02abf
Add more tests
koubaa Dec 1, 2019
9c3e1c5
Implement list converter
koubaa Dec 1, 2019
b9db0f6
Implement action converter
koubaa Dec 1, 2019
4b0a1ad
add TODO
koubaa Dec 1, 2019
8bed1bb
Update changelog
koubaa Dec 1, 2019
a4599d9
share common code between ToArray and ToList
koubaa Dec 2, 2019
96fd896
improve ref counting
koubaa Dec 3, 2019
c6fd768
revert whitespace
koubaa Dec 4, 2019
e63d11e
list wrapper
koubaa Dec 8, 2019
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share common code between ToArray and ToList
  • Loading branch information
@koubaa
koubaa committed Dec 2, 2019
commit a4599d922bf0742f35e76f720ba0fefcdadf86af
88 changes: 34 additions & 54 deletions src/runtime/converter.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -864,44 +864,28 @@ private static void SetConversionError(IntPtr value, Type target)
Exceptions.SetError(Exceptions.TypeError, $"Cannot convert {src} to {target}");
}


/// <summary>
/// Convert a Python value to a correctly typed managed array instance.
/// The Python value must support the Python iterator protocol or and the
/// items in the sequence must be convertible to the target array type.
/// </summary>
private static bool ToArray(IntPtr value, Type obType, out object result, bool setError)
private static bool ToListOfT(IntPtr value, Type elementType, out object result)
{
Type elementType = obType.GetElementType();
result = null;

bool IsSeqObj = Runtime.PySequence_Check(value);
var len = IsSeqObj ? Runtime.PySequence_Size(value) : -1;

IntPtr IterObject = Runtime.PyObject_GetIter(value);

if(IterObject==IntPtr.Zero) {
if (setError)
{
SetConversionError(value, obType);
}
if (IterObject == IntPtr.Zero)
return false;
}

Array items;

var listType = typeof(List<>);
var constructedListType = listType.MakeGenericType(elementType);
IList list = IsSeqObj ? (IList) Activator.CreateInstance(constructedListType, new Object[] {(int) len}) :
(IList) Activator.CreateInstance(constructedListType);
IList list = IsSeqObj ? (IList)Activator.CreateInstance(constructedListType, new Object[] { (int)len }) :
(IList)Activator.CreateInstance(constructedListType);
IntPtr item;

while ((item = Runtime.PyIter_Next(IterObject)) != IntPtr.Zero)
{
while ((item = Runtime.PyIter_Next(IterObject)) != IntPtr.Zero) {
object obj = null;

if (!Converter.ToManaged(item, elementType, out obj, true))
{
if (!Converter.ToManaged(item, elementType, out obj, true)) {
Runtime.XDecref(item);
return false;
}
Expand All @@ -910,12 +894,34 @@ private static bool ToArray(IntPtr value, Type obType, out object result, bool s
Runtime.XDecref(item);
}
Runtime.XDecref(IterObject);
result = list;
return true;
}

/// <summary>
/// Convert a Python value to a correctly typed managed array instance.
/// The Python value must support the Python iterator protocol or and the
/// items in the sequence must be convertible to the target array type.
/// </summary>
private static bool ToArray(IntPtr value, Type obType, out object result, bool setError)
{
Type elementType = obType.GetElementType();
result = null;
bool success = ToListOfT(value, elementType, out result);
if (!success)
{
if (setError)
SetConversionError(value, obType);
return false;
}

items = Array.CreateInstance(elementType, list.Count);
IList list = (IList)result;
Array items = Array.CreateInstance(elementType, list.Count);
list.CopyTo(items, 0);

result = items;
return true;

}

/// <summary>
Expand Down Expand Up @@ -963,39 +969,13 @@ private static bool ToAction(IntPtr value, Type obType, out object result, bool
/// </summary>
private static bool ToList(IntPtr value, Type obType, out object result, bool setError) {
Type elementType = obType.GetGenericArguments()[0];
result = null;

bool IsSeqObj = Runtime.PySequence_Check(value);
var len = IsSeqObj ? Runtime.PySequence_Size(value) : -1;

IntPtr IterObject = Runtime.PyObject_GetIter(value);

if (IterObject == IntPtr.Zero) {
if (setError) {
var success = ToListOfT(value, elementType, out result);
if (!success)
{
if (setError)
SetConversionError(value, obType);
}
return false;
}

var listType = typeof(List<>);
var constructedListType = listType.MakeGenericType(elementType);
IList list = IsSeqObj ? (IList)Activator.CreateInstance(constructedListType, new Object[] { (int)len }) :
(IList)Activator.CreateInstance(constructedListType);
IntPtr item;

while ((item = Runtime.PyIter_Next(IterObject)) != IntPtr.Zero) {
object obj = null;

if (!Converter.ToManaged(item, elementType, out obj, true)) {
Runtime.XDecref(item);
return false;
}

list.Add(obj);
Runtime.XDecref(item);
}
Runtime.XDecref(IterObject);
4928 result = list;
return true;
}

Expand Down
0