Few questions about invokeDynamic

[Christian Thalinger]

On Nov 9, 2010, at 4:25 PM, Rémi Forax wrote:
> Le 09/11/2010 14:57, Christian Thalinger a écrit :
>> On Nov 9, 2010, at 11:43 AM, Rémi Forax wrote:
>>
>>>  So a workaround for that bug is to declare the return type of
>>> invokedynamic
>>> to be not void but by example int.
>>>
>>
>> The fix is trivial but I'd like to implemented to other missing  
>> pieces
>> too, like int-to-float conversion and friends.
>>
>> Remi, could you tell me how I can produce AMHs that do such
>> conversions (on the return type)?
>>
>
> Here is an example.
>   If indy has no parameter, it tests void -> indy return type
>   If indy has one parameter, it test parameter type -> return type
>   If indy name is "spread", a spread/collect is done.
>
> Rémi
>
> PS: With the new API, all identity methods but the one that take no
> parameter
> can be removed and replace by Methodhandles.identity() in the BSM.


Thanks, that helps a lot!  But the int -> float/double stuff does not  
work:

Exception in thread "main" java.lang.ClassCastException:  
java.lang.Integer cannot be cast to java.lang.Float
         at  
sun.dyn.util.ValueConversions.unboxFloat(ValueConversions.java:85)
         at sun.dyn.ToGeneric$Adapter.return_F(ToGeneric.java:399)
         at sun.dyn.ToGeneric$A1.invoke_F(ToGeneric.java:649)
         at ConvertTest.main(ConvertTest.java:48)

-- Christian

PS: I hate when the mailing list server is so slow...