Replicating the class lookup process

Mark Raynsford <[email protected]> Sun, 22 Oct 2017 18:40:21 +0000

Newsgroups	gmane.comp.java.objectweb.asm
Organization	io7m.com
Message-ID	<[email protected]>

Hello.

I'm writing a small tool that analyzes Java 9 modules. I understand
from reading the ASM user guide that ASM doesn't know anything about
class loading, and that's fine. My program takes a single module as an
argument and analyzes the classes within it using the tree API. However,
classes within that module can obviously extend classes that are defined
outside of the module and therefore I need to be able to look up
external classes. Essentially, given an arbitrary class name, I need to
be able to return a ClassNode by finding it in one or more external
modules. This may include platform classes.

My actual question: Do I need to implement the whole lookup process
myself? It seems that in order to do so correctly, I'd need to
duplicate at least some of the semantics that the VM implements
(building a module graph, etc). It seems like it could also get a bit
platform-specific: If I need to look at platform classes, then I'd need
to be able to locate them on the user's system, and that could get
unpleasant very quickly.

-- 
Mark Raynsford | http://www.io7m.com

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