Some insights on coAST

[tushar-rishav]

It'd be helpful if we get to know more about what problems coAST would solve? Prefereably in some detail
cc @sils1297

[sils]

well the idea is I can have any programming language, transform it to coAST and then I have a lot of algorithms that operate on coAST and do cool code analysis. I only need to write the algorithms once for all languages then, right?

Would you mind clarifying it in the repo a bit?

[tushar-rishav]

@sils1297 Sure thing!
So that's cool. What sort of algorithms you are expecting to run on AST? I assume language specifics checks won't apply here. We can run something which is more general. Maybe things like Cyclomatic complexity? Is there anything else in particular?

[tushar-rishav]

@sils1297 I'd summarize what we discuss here and update the idea page in the end? Probably, I'd have better content then

[sils]

nothing in particular, if coast is good it can be rather complicated things
too

Sincerely,

Lasse Schuirmann

[email protected]
http://viperdev.io/

2016-03-14 22:35 GMT+01:00 Tushar [email protected]:

@sils1297 https://github.com/sils1297 Sure thing!
So that's cool. What sort of algorithms you are expecting to run on AST? I
assume language specifics checks won't apply here. We can run something
which is more general. Maybe things like Cyclomatic complexity? Is there
anything else in particular?

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#2 (comment).

[Makman2]

@tushar-rishav you are aware that coAST is mainly for having a language-independent AST generation?

[tushar-rishav]

@sils1297 @Makman2 IIUC we need to create a rule/grammar to create a parser that works for all languages? If we want coAST to create AST for all the languages. One rule that fits all?

[sils]

I think there'll be no way around making a parser for every language. Do
you know https://github.com/BNFC/bnfc ? I talked to the maintainer briefly
last guadec, that could be a possible thing...

Sincerely,

Lasse Schuirmann

[email protected]
http://viperdev.io/

2016-03-18 14:36 GMT+01:00 Tushar [email protected]:

@sils1297 https://github.com/sils1297 @Makman2
https://github.com/Makman2 IIUC we need to create a rule/grammar to
create a parser that works for all languages? If we want coAST to
create AST for all the languages. One rule that fits all?

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#2 (comment)

[tushar-rishav]

@sils1297 True! It's difficult task. I was going through https://github.com/orlandohill/waxeye or http://waxeye.org/ . They seem to parse C, Java, Javascript, Python, Ruby , Scheme. So once we have AST we can do analysis on it.

[Makman2]

Performance is also something we need to consider. Writing a parser in pure python could be fairly slow^^ Using Flex and Bison is in fact the right approach for this kind of work imo^^

[Makman2]

(If we write them ourselves)