Emacs, cedet and c++/c++11 support

10
votes

I usually develop using emacs in a linux environment (ubuntu) because I love the editor. I've been also using eclipse from time to time but I find it slow.

Since I want IDE-like features, I tried to setup cedet and it seems to be sort of doing the work.

  1. I find that cedet never finds base class members. For example, std::vector in gcc has std::vector::size in its base class and it cannot find it.
  2. Seems inaccurate: If I do something like "myvector." it will give me completions like size_type.
  3. Cannot use auto from c++11, it seems not to work.
  4. srecode-getset gives me errors even for basic usage.

My configuration does not give any error and is based in alexott cedet config.

My questions are:

  1. The completion is that inaccurate still? (Think of "vector." giving things like "size_type".
  2. What is the status of cedet for c++/c++11? Should auto be working? I'm doing anything wrong?

I tried to use both bundled ubuntu version and last version from bzr repository. CEDET seems an extremely useful tool, but I wonder if it needs more work.

Thanks in advance.

3
c++linuxc++11emacs
Although it can do lots of things, CEDET still needs a lot of work, especially for C++, as it's just one of the languages that it supports, probably the most complex one. It would be great if people with knowledge of bison and elisp contributed more. - abo-abo
I don't know bison, unfortunately :-( But with a bit more accuracy this would be really great. - Germán Diago
I develop https://github.com/abo-abo/function-args that makes use of CEDET. I'd love to have support for C++ default function arguments, but this hasn't been implemented yet. - abo-abo
afaik creating a C++ grammar using BNF like bison will take is an unsolved problem - even with the GLR parser. just something to think about... - jheriko

3 Answers

2
votes

Instead of relying on CEDET for completion, you might want to consider an alternative completion provider in Emacs.

Auto-complete-clang and auto-complete-clang-async both work with clang to get completions and with the auto-complete package to display them. Company-clang is similar, but uses the company package to display completions.

There is another minor mode for C, C++, and ObjC called irony that uses clang to get completions and can use multiple front-ends to display completions. This might have the best documentation for getting it set up.

All of these are available on Marmalade for use with the package manager in Emacs 24.

0
votes

I know that this may be a less-than-sufficient answer (and I'd prefer to mention this in the comments but I'm shy on points), but there is an Eclipse plugin for emacs functionality called emacs+. This link should be friendly to your Eclipse install manager (on Indigo I can copy and paste it into Help->Install New Software->Work With). Because Eclipse was otherwise attractive to you and therefore this can indirectly alleviate your problem...

0
votes

size_type is actually a member type of vector, so that's not as crazy as it sounds. Of course, the syntax is myvector::size_type, not with a period.