Adding bytecode interfacing methods

Hi,

GROOVY-9848 and the PR for it, that I missed to look at just reminded me=
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of something I would like to discuss.

If we add a method that we compile against, like for example in=20
ScriptBytecodeAdapter, then we have to maintain that method almost for=20
eternity or we break binary compatibility of older Groovy versions that=20
make use of that in precompiled code. That is why when I initially=20
started with invokedynamic I gave it some kind of operator (method call,=
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cast, property access) that controls what this invokedynamic call is=20
for. That is because a bootstrap method is such a binary interface as well=
.

My proposal is therefore not adding new methods to ScriptBytecodeAdapter=
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at all and instead to make use of the existing bootstrap method or we=20
define a new bootstrap method for such cases as "in" and "!in". Though a=
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new bootstrap method is something I would only consider for cases where=20
we can determine the outcome without having to inspect the dynamic=20
types. So for example isCase depends on the receiver more or less, thus=20
it makes no sense to put it into a new bootstrap method in my opinion.

thoughts?

bye Jochen