On Jul 14, 2014, at 4:37 PM, Vladimir Ivanov <vladimir.x.iva...@oracle.com> 
wrote:

> http://cr.openjdk.java.net/~vlivanov/8050173/webrev.00/
> https://bugs.openjdk.java.net/browse/JDK-8050173
> 
> Added j.l.i.MethodHandle.copyWith(MethodType, LambdaForm) and provided 
> implementation for all subclasses.
> 
> Also, some cleanups:
>  * rewrote MH.viewAsType on top of MH.copyWith;
>  * extended MH.viewAsType to do strict checks w/ assertions turned on (new 
> parameter: boolean strict);
>  * extended MT.isViewableAs to accept both interface preserving and interface 
> erasing conversions (new parameter: boolean keepInterfaces).
> 
> Testing: jdk/java/lang/invoke, jdk/java/util/streams, nashorn, octane w/ "-ea 
> -esa" and COMPILE_THRESHOLD={0,30}.
> 
> Reviewed-by: vlivanov, ?
> Contributed-by: john.r.r...@oracle.com
> 

Looks good, just one comment.

MethodHandles.restrictReceiver

This method has:

1578         private MethodHandle restrictReceiver(MemberName method, 
MethodHandle mh, Class<?> caller) throws IllegalAccessException {
...
1589             assert(mh instanceof DirectMethodHandle);  // 
DirectMethodHandle.copyWith

Why not make the second parameter be "DirectMethodHandle mh" ?

Paul.

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