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Merged
filmor merged 3 commits into from
Aug 12, 2022
Merged

Explicit float and int conversion for builtin types #1904

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bf1ca88
Explicit float and int conversion for builtin types
filmor Aug 10, 2022
881b2b2
Add conversions for int->float and bool->(int,float)
filmor Aug 11, 2022
3cbdfdc
Use direct conversion functions and add more tests
filmor Aug 11, 2022
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Add conversions for int->float and bool->(int,float)
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@filmor
filmor committed Aug 11, 2022
commit 881b2b24e6a8e5ace4b99b78dbf569b2303e7a88
20 changes: 20 additions & 0 deletions src/runtime/Types/ClassBase.cs
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Expand Up @@ -536,6 +536,20 @@ static NewReference DoConvert(BorrowedReference ob)
return python.NewReferenceOrNull();
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}

static NewReference DoConvertBooleanInt(BorrowedReference ob)
{
var self = (CLRObject)GetManagedObject(ob)!;
using var python = ((bool)self.inst ? 1 : 0).ToPython();
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return python.NewReferenceOrNull();
}

static NewReference DoConvertIntFloat(BorrowedReference ob)
{
var self = (CLRObject)GetManagedObject(ob)!;
using var python = (Convert.ToDouble(self.inst)).ToPython();
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return python.NewReferenceOrNull();
}

static IEnumerable<MethodInfo> GetCallImplementations(Type type)
=> type.GetMethods(BindingFlags.Public | BindingFlags.Instance)
.Where(m => m.Name == "__call__");
Expand Down Expand Up @@ -574,6 +588,11 @@ public virtual void InitializeSlots(BorrowedReference pyType, SlotsHolder slotsH

switch (Type.GetTypeCode(type.Value))
{
case TypeCode.Boolean:
TypeManager.InitializeSlotIfEmpty(pyType, TypeOffset.nb_int, new Interop.B_N(DoConvertBooleanInt), slotsHolder);
TypeManager.InitializeSlotIfEmpty(pyType, TypeOffset.nb_float, new Interop.B_N(DoConvertIntFloat), slotsHolder);
break;

case TypeCode.Byte:
case TypeCode.SByte:
case TypeCode.UInt16:
Expand All @@ -583,6 +602,7 @@ public virtual void InitializeSlots(BorrowedReference pyType, SlotsHolder slotsH
case TypeCode.Int32:
case TypeCode.Int64:
TypeManager.InitializeSlotIfEmpty(pyType, TypeOffset.nb_int, new Interop.B_N(DoConvert), slotsHolder);
TypeManager.InitializeSlotIfEmpty(pyType, TypeOffset.nb_float, new Interop.B_N(DoConvertIntFloat), slotsHolder);
break;
case TypeCode.Double:
case TypeCode.Single:
Expand Down
7 changes: 6 additions & 1 deletion tests/test_conversion.py
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Expand Up @@ -721,11 +721,16 @@ def test_intptr_construction():
UIntPtr(v)

def test_explicit_conversion():
from System import Int64, UInt64, Int32, UInt32, Int16, UInt16, Byte, SByte
from System import (
Int64, UInt64, Int32, UInt32, Int16, UInt16, Byte, SByte, Boolean
)
from System import Double, Single

assert int(Boolean(True)) == 1

for t in [Int64, UInt64, Int32, UInt32, Int16, UInt16, Byte, SByte]:
assert int(t(127)) == 127
assert float(t(127)) == 127.0
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for t in [Single, Double]:
assert float(t(0.125)) == 0.125