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Added ToPythonAs() extension method for explicit conversion using an arbitrary type #2419

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Added ToPythonAs() extension method for explicit conversion using an arbitrary type #2419

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1ef1e7b
Encoders no support specifying the target encoding type
joaompneves Jul 17, 2024
255201a
Fix build
joaompneves Jul 18, 2024
37c4d04
Add unit test
joaompneves Jul 18, 2024
4fbf04c
Revert unnecessary changes
joaompneves Jul 18, 2024
cf8ff1f
Add test description
joaompneves Jul 18, 2024
bc11136
Remove warning
joaompneves Jul 18, 2024
1073b03
Update authors and changelog
joaompneves Jul 18, 2024
b5a18d1
Update CHANGELOG.md
joaompneves Jul 18, 2024
37ec583
Update CHANGELOG.md
joaompneves Jul 18, 2024
ad7f985
Update CHANGELOG.md
joaompneves Jul 18, 2024
bac598f
CR
joaompneves Jul 23, 2024
e04b6c4
Merge branch 'support-specific-type-encoding' of https://github.com/j…
joaompneves Jul 23, 2024
8bb7519
Revert file
joaompneves Jul 23, 2024
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Encoders no support specifying the target encoding type
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@joaompneves
joaompneves committed Jul 17, 2024
commit 1ef1e7ba5be974c4cc500c5d134641ceb96f6b9d
4 changes: 2 additions & 2 deletions src/runtime/Codecs/EncoderGroup.cs
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Expand Up @@ -28,13 +28,13 @@ public void Add(IPyObjectEncoder item)
/// <inheritdoc />
public bool CanEncode(Type type) => this.encoders.Any(encoder => encoder.CanEncode(type));
/// <inheritdoc />
public PyObject? TryEncode(object value)
public PyObject? TryEncode(object value, Type type)
{
if (value is null) throw new ArgumentNullException(nameof(value));

foreach (var encoder in this.GetEncoders(value.GetType()))
{
var result = encoder.TryEncode(value);
var result = encoder.TryEncode(value, type);
if (result != null)
{
return result;
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7 changes: 3 additions & 4 deletions src/runtime/Codecs/EnumPyIntCodec.cs
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Expand Up @@ -46,12 +46,11 @@ public bool TryDecode<T>(PyObject pyObj, out T? value)
return false;
}

public PyObject? TryEncode(object value)
public PyObject? TryEncode(object value, Type type)
{
if (value is null) return null;

var enumType = value.GetType();
if (!enumType.IsEnum) return null;

if (!type.IsEnum) return null;

try
{
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3 changes: 2 additions & 1 deletion src/runtime/Codecs/IPyObjectEncoder.cs
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Expand Up @@ -13,6 +13,7 @@ public interface IPyObjectEncoder
bool CanEncode(Type type);
/// <summary>
/// Attempts to encode CLR object <paramref name="value"/> into Python object
/// using the specified <paramref name="type"/>
/// </summary>
PyObject? TryEncode(object value);
PyObject? TryEncode(object value, Type type);
}
2 changes: 1 addition & 1 deletion src/runtime/Codecs/PyObjectConversions.cs
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Expand Up @@ -54,7 +54,7 @@ public static void RegisterDecoder(IPyObjectDecoder decoder)

foreach (var encoder in clrToPython.GetOrAdd(type, GetEncoders))
{
var result = encoder.TryEncode(obj);
var result = encoder.TryEncode(obj, type);
if (result != null) return result;
}

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2 changes: 1 addition & 1 deletion src/runtime/Codecs/RawProxyEncoder.cs
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Expand Up @@ -8,7 +8,7 @@ namespace Python.Runtime.Codecs
/// </summary>
public class RawProxyEncoder: IPyObjectEncoder
{
public PyObject TryEncode(object value)
public PyObject TryEncode(object value, Type type)
{
if (value is null) throw new ArgumentNullException(nameof(value));

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13 changes: 6 additions & 7 deletions src/runtime/Codecs/TupleCodecs.cs
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Expand Up @@ -18,20 +18,19 @@ public bool CanEncode(Type type)
&& type.Name.StartsWith(typeof(TTuple).Name + '`');
}

public PyObject? TryEncode(object value)
public PyObject? TryEncode(object value, Type type)
{
if (value == null) return null;

var tupleType = value.GetType();
if (tupleType == typeof(object)) return null;
if (!this.CanEncode(tupleType)) return null;
if (tupleType == typeof(TTuple)) return new PyTuple();
if (type == typeof(object)) return null;
if (!this.CanEncode(type)) return null;
if (type == typeof(TTuple)) return new PyTuple();

nint fieldCount = tupleType.GetGenericArguments().Length;
nint fieldCount = type.GetGenericArguments().Length;
using var tuple = Runtime.PyTuple_New(fieldCount);
PythonException.ThrowIfIsNull(tuple);
int fieldIndex = 0;
foreach (FieldInfo field in tupleType.GetFields())
foreach (FieldInfo field in type.GetFields())
{
var item = field.GetValue(value);
using var pyItem = Converter.ToPython(item, field.FieldType);
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6 changes: 6 additions & 0 deletions src/runtime/Converter.cs
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Expand Up @@ -987,5 +987,11 @@ public static PyObject ToPythonAs<T>(this T? o)
if (o is null) return Runtime.None;
return Converter.ToPython(o, typeof(T)).MoveToPyObject();
}

public static PyObject ToPythonAs(this object o, Type type)
{
if (o is null) return Runtime.None;
return Converter.ToPython(o, type).MoveToPyObject();
}
}
}
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