Re: IDE

[Eric Ludlam]

On 10/22/2015 07:17 AM, Dmitry Gutov wrote:
> On 10/22/2015 04:35 AM, Eric Ludlam wrote:
>
> > I'm not sure what is relevant here as far as listing features. There are
> > 12 minor modes that come with semantic doing various diverse things.
> > Things like idle-summary-mode will show you an api summary of the symbol
> > under point.
>
> Robe already supports eldoc-mode. If idle-summary-mode has some UI 
> advantages, I believe they should be folded into eldoc-mode as well.

Semantic's idle process handling makes sure databases are synchronized 
once, then enables tools to run after, so it is more about the 
scheduling of different tools that use semantic.

In addition, by going through the semantic version, there are a range of 
different formatting options to use that the user can select from.  That 
doesn't require idle-summary-mode, but is a side effect of using 
semantic to extract contextual information.

Also, eldoc only supported Emacs Lisp and no extensions when I wrote the 
semantic idle handler.  Other features of idle-summary-mode would port 
fine between either.

> > There is COGRE which can pull data from the
> > buffer, reference some databases, and pop up a uml diagram of your code
> > which is a bit over-the-top.
>
> COGRE sounds good, but I imagine it'll need more support than just 
> dumping the AST.
>
> And I can't get it to do anything (here's the documentation for 
> automatic generation: 
> http://www.randomsample.de/cedetdocs/cogre/Semantic-Support.html#Semantic-Support, 
> and trying to interact with the editor manually leads to "eieio-oref: 
> eieio-oref called on a class: cogre-class", etc).
>
> It's also not in Emacs, for some reason.

It was deemed optional when Yidong merged CEDET into Emacs.  You will 
probably need to use Emacs24 to make it work.  To try it out do this:

1) Install graphviz (it uses that for the layout engine)
2) Start emacs 24
3) Use CEDET from it's git repository
4) M-x find-library RET cogre RET
5) find cogre-element-peer in the code
6) M-x cogre-uml-quick-class RET

should get you something to play with.

> (*) Other things that the users ask for is fuzzy completion, showing 
> completions right away after dot (Robe isn't fast enough for that) and 
> working over TRAMP inside a Vagrant environment. It doesn't seem like 
> CEDET integration will help with any of those.

CEDET is a framework that provides an abstraction for connecting 
different tools that need to talk about hard problems together.  The 
problems it solves are related to project information, abstracting 'tag' 
information down to something Lisp programs can reason on, and 
abstracting code generation into a scheme that can allow lisp programs 
to support multiple languages.  CEDET doesn't have 'fuzzy completion' 
but it can feed a fuzzy completion engine.  CEDET doesn't do anything 
special with TRAMP, but someone could use CEDET to bind that workflow 
into the common workflow.  When thinking about CEDET, it isn't about a 
bullet list of user facing features but about how it can enable someone 
working on said feature to have their work leveraged to a wider audience.

Eric