FTR, I captured this issue:
https://bugs.openjdk.java.net/browse/JDK-8051294
(Wish they were all so easy to catch.)
— John
On Jul 17, 2014, at 5:12 PM, John Rose <john.r.r...@oracle.com> wrote:
> On Jul 16, 2014, at 11:20 AM, Peter Levart <peter.lev...@gmail.com> wrote:
>
>> An alternative could be:
>>
>> public Throwable throwIfUnchecked() {
>> if (this instanceof RuntimeException) throw (RuntimeException) this;
>> if (this instanceof Error) throw (Error) this;
>> return this;
>> }
>>
>> Then use it like:
>>
>> try {
>> ...
>> } catch (Throwable t) {
>> throw new WrapperException(t.throwIfUnchecked());
>> }
>
> I like this one. (I wish we could declare This types, so that
> TYPEOF[t.throwIfUnchecked()] == TYPEOF[t].)
>
> It puts the throw of the "less dangerous" exception type inside the
> subroutine, making the wrapping and the "more dangerous" (more ad hoc)
> exception be explicit and in-line.
>
> To complete the picture, add:
>
> public <X extends Throwable> Throwable throwIf(Class<X> exClass) throws X {
> if (exClass.isInstance(this)) throw exClass.cast(this);
> return this;
> }
>
> ...to be used as:
>
> try {
> ...
> } catch (Throwable t) {
> t.throwIfUnchecked().throwIf(X.class).throwIf(Y.class).throwIf(Z.class);
> throw new WrapperException(t);
> }
>
> Or some other combination of sequential and/or fluent calls.
>
> — John
