Altering AST with javac Plugin

[Gunnar Morling]

Hi,

I recently came across a javac plug-in (i.e. implementation
of com.sun.source.util.Plugin) which alters/amends the AST of the classes
under compilation.

Is this an "officially" foreseen usage of that plug-in API? Or i this
rather a hack akin to annotation processor implementations that cast the
model types to the javac-internal ones in order to modify them? I'm
curious, because those AST-modifying annotation processors are troublesome
to deal with for other processors which won't "see" those amendments, so
I'm wondering whether one would or would not have similar issues when
altering the AST with such c.s.s.u.Plugin implementation.

Thanks,

--Gunnar
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