pythonnet/src/runtime/Codecs/EnumPyIntCodec.cs at master · devtrack/pythonnet · GitHub

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using System;

namespace Python.Runtime.Codecs

{

[Obsolete]

public sealed class EnumPyIntCodec : IPyObjectEncoder, IPyObjectDecoder

{

public static EnumPyIntCodec Instance { get; } = new EnumPyIntCodec();

public bool CanDecode(PyType objectType, Type targetType)

{

return targetType.IsEnum

&& objectType.IsSubclass(Runtime.PyLongType);

}

public bool CanEncode(Type type)

{

return type == typeof(object) || type == typeof(ValueType) || type.IsEnum;

}

public bool TryDecode<T>(PyObject pyObj, out T? value)

{

value = default;

if (!typeof(T).IsEnum) return false;

Type etype = Enum.GetUnderlyingType(typeof(T));

if (!PyInt.IsIntType(pyObj)) return false;

object? result;

try

{

result = pyObj.AsManagedObject(etype);

}

catch (InvalidCastException)

{

return false;

}

if (Enum.IsDefined(typeof(T), result) || typeof(T).IsFlagsEnum())

{

value = (T)Enum.ToObject(typeof(T), result);

return true;

}

return false;

}

public PyObject? TryEncode(object value)

{

if (value is null) return null;

var enumType = value.GetType();

if (!enumType.IsEnum) return null;

try

{

return new PyInt(Convert.ToInt64(value));

}

catch (OverflowException)

{

return new PyInt(Convert.ToUInt64(value));

}

private EnumPyIntCodec() { }

}

pythonnet/src/runtime/Codecs/EnumPyIntCodec.cs at master · devtrack/pythonnet · GitHub

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