I will be speculating a little since I haven't actually read the source. As
far as I understand, YouCompleteMe uses python for some parts but at its
core it has a cpp component using libclang library. libclang library itself
is already something that provides code completion which is the thing
missing for rust language.

[libclang]: http://clang.llvm.org/doxygen/group__CINDEX.html


On Tue, Nov 19, 2013 at 10:13 PM, Gaetan <[email protected]> wrote:

> I think we can write in rust and perhaps reuse part of the compiler, but
> we cannot allow to support only fully compiler crates.
>
> It may be possible to begin a draft in language such as python
> (YouCompleteMe seems to be written mostly in python)
>
> -----
> Gaetan
>
>
>
> 2013/11/19 Gokcehan Kara <[email protected]>
>
>> I'm willing to help on this task, I think having a good completion
>>> library can help a lot smoothing the learning curve of a new language. I
>>> learned python in a few days with aptana, and I remember a few years ago
>>> how it was easy to write C++ with visual studio. Having an IDE integration
>>> is almost as important as having good tutorials.
>>
>>
>> That's great. I agree that it would be nice for newbies and I think also
>> for others as most people are already quite spoiled by the capabilities of
>> modern IDE's these days.
>>
>> I'm also a newbe in Rust and I imagine you want to write in rust itself.
>>> I can help on the integration with sublime.
>>
>>
>> I was hoping to write in rust because I don't want to implement/maintain
>> a parser and typechecker from scratch. I was very pleased to see that it's
>> possible to access everything in `librustc` and `libsyntax` with a simple
>> `extern`, not sure if this will be removed later.
>>
>> rustfind (https://github.com/dobkeratops/rustfind) does this and more,
>>> for crates that compile.
>>
>>
>> I wasn't aware of that, looks very nice indeed. I will take a look and
>> see if I can contribute somehow when I have some time.
>>
>> Not very, for the general case. If you want autocompletion as you
>>> type, you currently need to have a fully-compilable crate. Otherwise,
>>> parsing or typechecking or something else will fail and you won't be
>>> able to get any results. rustc is currently very all-or-nothing.
>>
>>
>> It's a bummer. Are there any plans to implement some error recovery to
>> rustc?
>>
>> But, you can get useful information for completion out of an
>>> already-compiling crate, though I'm not sure how much better it would
>>> be than what etags already does.
>>
>>
>> It has been some time since I last tried tags for autocompletion but it
>> wasn't very accurate as far as I remember. As far as I know you also need
>> some editor plugin for this, something like [OmniCppComplete](
>> http://www.vim.org/scripts/script.php?script_id=1520) which is basically
>> a cpp parser implemented in vimscript.
>>
>> Very, since it would require reworking most of the compiler ;)
>>
>>
>> :)
>>
>
>
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