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17.06.2012 22:44, Manuel Klimek wrote: <br>
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<div bgcolor="#FFFFFF" text="#000000"> I see different
approaches to implement such kind of tool:<br>
1. Naive and straightforward way: just as external tool
to ASTMatchers, same method that I used in example
above. Such approach would result in some "knowledge"
duplication, i.e. for each predicate it would be
additional some code in predicate-generation tool.<br>
2. More complex way, but with some "knowledge" reuse
from ASTMatchers. That approach would require
re-describing predicates with some higher/another
abstraction, what would allow us to generate both
predicates and predicates-generation stuff from one
source of "knowledge". I am not sure if such approach
could be done in general, requires some research.</div>
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<div>My hunch is that for (2) the matchers would be
sufficiently different from what they are now, that it
would end up like (1) anyway - insert the obvious
disclaimer that I might be wrong etc etc here :)</div>
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Yes, (2) would require re-implementation of matchers in other terms.
But I think API of matchers will be not changed.<br>
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<div>At least for a first step I think (1) is the way to go
- once we have more experience with how the stuff is used,
we can then try to figure out how to generalize it...</div>
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Yes, I fully agree. (1) is a good step to start with, at least for
prototype.<br>
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<div>I don't know whether you're aware, but in
the tooling branch there's also a
proof-of-concept implementation for dynamic
matcher generation, and it might make sense
to base your stuff on that.</div>
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Are you talking about dynamic parseMatcher (as in
ast-query example)?<br>
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<div>Yep, that one...</div>
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Thank you for note.<br>
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<div bgcolor="#FFFFFF" text="#000000"> Or maybe about some
interactive (maybe gui) tool for building predicates? I
remember that Chandler mentioned about something similar
at <a moz-do-not-send="true"
href="http://www.youtube.com/watch?v=yuIOGfcOH0k&t=27m56s"
target="_blank">http://www.youtube.com/watch?v=yuIOGfcOH0k&t=27m56s</a>
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<div>Now we're talking the next step :) Yea, having a GUI
would be *great* (and just so we're clear: with GUI I mean
a web page :P)</div>
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And maybe AST database optimized for fast predicate matches :)<br>
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Best Regards,<br>
Evgeny<br>
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