Move DefaultBinder.CanConvert.cs to shared #23931
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| @@ -1204,6 +1204,63 @@ private static bool CreateParamOrder(int[] paramOrder, ParameterInfo[] pars, str | |||
| return true; | |||
| } | |||
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| // CanChangePrimitive | |||
| // This will determine if the source can be converted to the target type | |||
| private static bool CanChangePrimitive(Type source, Type target) | |||
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I think in Mono it's internal and used from Array code. Can you please check it and make it internal if that's the case?
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Indeed, thanks! I hope CoreCLR guys don't mind if use internal here
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used from Array code. Can you please check it and make it internal if that's the case?
Is it a good idea to have a dependency from Array to DefaultBinder, TypeCode and rest of reflection? It may be a good idea to implement this using ElementTypes to make this more tree-shaking friendly.
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It's not necessarily a good idea. It was the only code that implemented primitive type widening check in managed code though (AFAIK). I'd prefer to have the functionality somewhere else and have DefaultBinder call it.
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This comment still applies, but it does not prevent merging this.
| (source == typeof(UIntPtr) && target == typeof(UIntPtr))) | ||
| return true; | ||
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| Primitives widerCodes = s_primitiveConversions[(int)(Type.GetTypeCode(source))]; |
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This new implementation will have different behavior for enums. The C++ code in DBCanConvertPrimitive called GetSignatureCorElementType that returns VALUETYPE for enums, but GetTypeCode will return the underlying type.
E.g. CanChangePrimitive(typeof(MyEnum), typeof(MyEnum)) returns false today, but it is going to return true with this change.
I think that this should be ok because of none of the callers depend on this, but it would be good if you can double check it too.
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@jkotas everywhere where this method is used the second argument (Type) is checked for IsPrimitive (which is false for Enum) so this case is not possible.
EgorBo
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Basically it's CoreRT implementation: https://github.com/dotnet/corert/blob/master/src/System.Private.CoreLib/src/System/DefaultBinder.CanConvert.cs
I can remove
Primitivesenum and fills_primitiveConversionswith raw values like here.I wrote some relfection-based benchmark, it shows that managed impl is 1-2% faster.
cc @jkotas @marek-safar