Re: GSOC 2016: FastParse library

Haoyi, hello!

In my proposal you have written about "local" cuts, but I don't cleary 
understand this case. Can you give me some example?

And I will continue to work on CSS Parser, what should I do next in it? 

понедельник, 21 марта 2016 г., 22:56:54 UTC+3 пользователь Vladimir 
Polushin написал:
>
> Hello! I've just shared the proposal
>  https://docs.google.com/document/d/1DebYhXZ3wRfT6yPjv3tIEtacvmUKo25zhr-unJjjNhc/edit?usp=sharing 
> <https://docs.google.com/document/d/1DebYhXZ3wRfT6yPjv3tIEtacvmUKo25zhr-unJjjNhc/edit?usp=sharing> . 
> Could you review it and give me some feedback?
>
> четверг, 17 марта 2016 г., 17:59:28 UTC+3 пользователь Haoyi Li написал:
>>
>> Lastly, w.r.t. the CSS parser, the end goal would be to have your parser 
>> be complete enough to parse
>>
>>    - https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.cs
>>    
>> into an AST, which can then be used to pretty-print it the same way this 
>> does:
>>
>>    - http://www.dirtymarkup.com/
>>    
>> Along with 1-2 more test CSS files of your choosing from other well-known 
>> open source projects. After that, send a PR and we'll merge the parser 
>> along with tests into the FastParse codebase.
>>
>> Note that you don't need to do this now - the proposal is probably more 
>> urgent since it's due on the 25th of March - but this should happen by 
>> mid-April when the student acceptance decisions are due.
>>
>> Note that this is a non-trivial amount of work, and I can't guarantee you 
>> a spot on GSOC even if you do it (that's up to the kind mercies of Google 
>> and the Scala org) but it will no doubt leave you proficient working with 
>> this library and writing parsers.
>>
>>
>>
>> On Thu, Mar 17, 2016 at 10:37 PM, Haoyi Li <[email protected]> wrote:
>>
>>> All three cases are more or less the same idea: you will need to make 
>>> FastParse generic enough to work with non String/Char data.
>>>
>>> Yes, you should dig into the code a bit and come up with some ideas of 
>>> how you would implement it. It's likely our plan will change if/when you 
>>> get accepted an GSOC starts, since we would have more time to go deeper 
>>> into things. Nevertheless, the exercise of putting together the proposal 
>>> will be valuable
>>>
>>> On Thu, Mar 17, 2016 at 12:07 AM, Vladimir Polushin <[email protected]> 
>>> wrote:
>>>
>>>> Great :) Then I will start to write a proposal. And I would like to 
>>>> clarify about this: If I understand correctly, there are 3 main cases in 
>>>> idea, and in proposal I should describe how I will implement they with some 
>>>> rough plan?
>>>>
>>>> среда, 16 марта 2016 г., 16:02:06 UTC+3 пользователь Haoyi Li написал:
>>>>>
>>>>> That's a good start. A lot more work would go into that if we want to 
>>>>> get that into the main repo (and I do). If you've already put together a 
>>>>> proposal we can discuss how to take it further, if not you probably should 
>>>>> put together a proposal before the March 25th deadline and we can keep 
>>>>> working on it after.
>>>>>
>>>>>
>>>>> On Wed, Mar 16, 2016 at 7:25 PM, Vladimir Polushin <[email protected]> 
>>>>> wrote:
>>>>>
>>>>>> I wrote basic version of CSS parser 
>>>>>> https://github.com/vovapolu/CssParser . According to 
>>>>>> https://www.w3.org/TR/css-syntax-3/ it only breaks css into simple 
>>>>>> elements like words and delimiters and it also can handle blocks in 
>>>>>> brackets. Now I am planning to add more tests and to try to implement some 
>>>>>> complex structures (selectors, other rules) in parser, but I think it will 
>>>>>> be pretty hard given all these rules and requirements.
>>>>>>
>>>>>> вторник, 15 марта 2016 г., 6:05:14 UTC+3 пользователь Haoyi Li 
>>>>>> написал:
>>>>>>>
>>>>>>> A CSS parser would serve the purpose as well and could plausibly be 
>>>>>>> useful. I think a Smalltalk parser would be a bit obscure I don't think it 
>>>>>>> would serve well: people won't be familiar enough to use it as an example, 
>>>>>>> nor would they find it useful in real life for parsing their smalltalk code 
>>>>>>> (since they won't have any)
>>>>>>>
>>>>>>> I'm not totally convinced that a CSS parser would be simpler than a 
>>>>>>> Markdown parser though. The CSS3 Grammar:
>>>>>>>
>>>>>>>    - https://www.w3.org/TR/css-syntax-3/
>>>>>>>    
>>>>>>> Certainly looks awfully complicated!
>>>>>>>
>>>>>>>
>>>>>>> On Tue, Mar 15, 2016 at 10:55 AM, Naftoli Gugenheim <
>>>>>>> [email protected]> wrote:
>>>>>>>
>>>>>>>> Have you seen CommonMark (http://commonmark.org/)?
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> On Mon, Mar 14, 2016 at 6:59 PM Vladimir Polushin <
>>>>>>>> [email protected]> wrote:
>>>>>>>>
>>>>>>>>> Hello! 
>>>>>>>>>
>>>>>>>>> Several days ago I started to write markdown parser, but now this 
>>>>>>>>> task seems to me very hard to implement. I tried to google grammars of 
>>>>>>>>> markdown or some specification, but markdown literally doesn't have any 
>>>>>>>>> standard and any grammar I found is quite large and complicated for the 
>>>>>>>>> first experience with library. So may I write CSS or Smalltalk parser 
>>>>>>>>> first? They have clear and concise grammars, which won't cause difficulties 
>>>>>>>>> in the implemenation. 
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> пятница, 11 марта 2016 г., 7:24:06 UTC+3 пользователь Haoyi Li 
>>>>>>>>> написал:
>>>>>>>>>
>>>>>>>>>> Hello! I wrote FastParse.
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> A good first contribution to FastParse would probably be some 
>>>>>>>>>> kind of example parser. The project already has Scala, Python, JSON and XML 
>>>>>>>>>> parsers, but it would be nice to add to the collection. 
>>>>>>>>>>
>>>>>>>>>> For example, a FastParse based Markdown parser would both very 
>>>>>>>>>> useful as well as serve to introduce you to the FastParse library and build 
>>>>>>>>>> you up to a reasonably high level of expertise. You would gain a much 
>>>>>>>>>> deeper understanding of its behavior and internals, the "why"s of the 
>>>>>>>>>> library, and be in a much better position to contribute significantly.
>>>>>>>>>>
>>>>>>>>> On Fri, Mar 11, 2016 at 3:59 AM, Vladimir Polushin <
>>>>>>>>>> [email protected]> wrote:
>>>>>>>>>>
>>>>>>>>> Hello!
>>>>>>>>>>>
>>>>>>>>>>> I am a third-year undergraduate Computer Science student at the 
>>>>>>>>>>> Moscow State University. I've been working with scala for a year and now I 
>>>>>>>>>>> want to start contributing to the Scala community. I looked thought the 
>>>>>>>>>>> list of ideas for GSOC, and I liked The FastParse library. I've already 
>>>>>>>>>>> used Scala Parser Combinators and I have a basic knowledge about formal 
>>>>>>>>>>> grammars and compilers. So where can I start? Should I fix some bug in that 
>>>>>>>>>>> repository first?
>>>>>>>>>>>
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>>>>>>>
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>>>>>
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>>>
>>>
>>

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