Hi Günter, Sean,
have a look at Jejak (https://github.com/ThierryGoubier/Jejak), it does
exactly what you describe: take a method, scan the ast, rewrite some of
the nodes (i.e. inject new ast nodes), recompile the method... uninstall
the modified method.
Ask me if you have any question about it.
(Now, there is the MetaLink framework in Pharo5 which is interesting as
well).
Regards,
Thierry
Le 08/09/2015 03:02, Sean P. DeNigris a écrit :
From Günter Khyo:
Günter Khyo wrote
Hello!
I want to replace particular nodes of an AST (such as Assignments or Self
sends) with my own nodes.
Is there an easy (high-level) way to do this without being familiar with
the entire compiler infrastructure?
The problem I am having is that AST nodes maintain internal state such as
parent links and, in the case of RBVariables, links to scopes and
bindings. There might be many other dependencies I am missing and missing
one of them can trigger exceptions with stack traces buried deep in the IR
Code-Generator and visitor calls.
For example, if I want to replace an assignment such as
Morph>>position: aPoint
"box := self fullBounds."
with something like
"self assignAndNotifiyDependents: self fullBounds to: 'box'"
Btw: I know there is a rewrite tool, but I want to do it programmatically.
Thanks!
-----
Cheers,
Sean
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