VIM: More precise C/C++ code parsing solutions? - vim

Pre:
I've been working in VIM for like a year already. Lots of great things: combinations, scripts. Whenever I'm editing something in a different editor, I feel sluggish/uncomfortable without VIM's navigation.
The problem:
The thing that really bothers me most of all is source code navigation using existing tools (ctags, cscope). Often, ctags can't find the declaration of a variable, cscope as opposed to ctags finds all definitions with the same variable name. Same craziness with call tree navigation, finding forward declarations along with a single class definition etc.
Compared to MS Intellisense, Visual Assist or even source code navigation in Eclipse, Exuberant Tags/cscope seems to be deprecated for at least 10 years.
I know there are tools like ViEMU, but they don't really solve the problem, since you lose lots of VIM's functionality.
The question:
I was wondering if there is a tool that does the source parsing better, or there is some way to integrate source parsing engines like Intellisense into VIM ?
Maybe there are commercial solutions or there are people who are ready to implement one ?
All the benefits of VIM seem to save less time than is being wasted while navigating to class definition, compared to Visual Assist, where it's done by a single Alt-G shortcut.

Search and Call tree
You could try eclim, which is a way to use some Eclipse features in Vim.
For C/C++, it provides :
Context sensitive completion (although it is disabled on Windows because it is buggy)
Context sensitive search in Project files (through :CSearchContext)
Call tree for functions/methods (:CCallHierarchy)
Code Validation (:Validate)
It is not great, but it can help in some cases.
Code Completion
Regarding automatic code completion, I primarily use OmniCppComplete, which is using tags to provide Context aware code completion. It is not that bad.
As advised by Luc Hermitte, you can also use clang_complete which does not need ctags, but needs clang installed.

Unfortunatelly, it is a real problem. ctags or cscope can hardly compete with Visual Studio code browsing - it actually uses a C++ compiler front-end to parse the code for the editor.

Related

Sublime, altering behavior of highlighting definions upon mouse-hover

I have a project with several classes which partly share functions while at other times the functions are different in code, but use the same name.
When hovering over a function name, Sublime highlights every file and line where that definition is found.
In my opinion it would be better if it actually included which class the different highlights belong to.
Is it possible to edit this in some way ?
Assume systems.js contains 4 different classes (1 base, 3 children). I would like to append or prepend the shown strings by the class definition (fetchable via prototype).
The hover popup mentioned in your question is powered by Sublime's internal symbol index, which is created in combination with the syntax definition that's used to syntax highlight files that you're editing. The Sublime syntax system is fairly context free; it parses the structure of the code but it doesn't contain any real structural information about it.
So for example it can determine that getShots is a function or method because of the syntax that was used to define it, but it doesn't know what class it came from.
The code for the hover popup is available in Default/symbol.py (you can use PackageResourceViewer to examine it) and associates symbols under the cursor with other places that it's seen symbols with that name in other files in the project; it literally only knows the information that you see in the popup; places where things by that name are defined and places where things of that name are referenced.
So in one sense, the answer to your question is No; core sublime can't do that because it doesn't have enough code intelligence to be able to figure that sort of thing out; this is exacerbated by dynamic languages like JavaScript where things can theoretically change at runtime as well.
The primary reason for that is because Sublime is extensible enough to support literally every programming language instead of just focusing on one or two (as e.g. PhpStorm does), so it doesn't have the core code to determine the information required.
All that said, since Sublime is indeed extremely extensible, it's possible that external code that does specialize on a language could be leveraged by a package in order to provide the appropriate information.
Two examples of that are SublimeCodeIntel and LSP for example. I don't use either of them myself, so I don't know for sure how good a fit they might be in your workflow.
I highly recommend you shift to Visual Studio Code majorly because sublime is an editor whereas vs code is an IDE. Also, it has very great extension support for all languages. I would recommend you to use jshint which the most popular plugin for js code available for almost all popular editors and IDEs. But still if you want to go with Sublime I suggest you following plugins:
https://www.sitepoint.com/essential-sublime-text-javascript-plugins/

Vi / Vim for project of more than a few files

I typically use an ide for large projects and vi for small single file scripts temporary files etc.
Lately I have heard of people using vi for larger projects too - actually, quite defensive and particular proud to do so.
I have tried, but i found it very cumbersome. Do any other programmers here use vi for and medium - large projects? If so, are there any tips/tricks you can offer for navigating source, looking at multiple files etc?
I have tried using tmux to see if it made things easier - but it still felt quite cumbersome
There is no magical tool that can make everything perfect. Vim is an editor, and it's pretty good at it, but it's not and will never be an IDE.
There used to be the pida project that made an IDE around vim, for better interaction when using python, but it got abandonned.
There is eclim which is a really neat tool that can use eclipse as a backend IDE accessible in a few keystrokes from within vim, while having all the power of eclipse for tagging, refactoring, debugging etc.. But you have to want running eclipse in background, which is like hiding an elephant under the carpet...
There are many little plugins you may want to use, and I'm pretty sure everyone has his favorite set of plugins, that helps navigate easily in the code and help tagging (like fugitive, nerdtree, etc..)
Finally, there is vim, a shell and that's all. Vim does a lot of things correctly, like navigating in the source, launching compilations and parsing the errors etc.. And for what vim is not good at, you can use your shell, to execute, to do git stuff, to open more vim windows to edit code..
Anyway, there's no perfect answer to your question, and I bet your question will be closed because of being "non constructive".
What do you find cumbersome? What works for you? What doesn't? What kind of feature do you need to be able to work efficiently with multiple files? How many are multiple files anyway?
Some people use Vim for working on quite large projects: the Linux kernel, Firefox, Vim itself… I guess that you need to know Vim pretty well to pull that off but it's all very doable, even without many plugins.
But I tend to think "complexity" rather than "quantity".
When I work with "complex" languages+projects (quotes because it is all very subjective) I'll use a more suited IDE with a Vim-emulation plugin: Flash Builder+Vrapper for Actionscript 3, Eclipse+Vrapper (then) Android Studio+IdeaVim (now) for Android.
When I work with "simple" (quotes, again) languages+projects I'll use Vim: that's any project involving HTML/CSS/JavaScript/PHP, from 3 to 50+ files.
File/buffer navigation
Vim is very good at opening files (which sounds funny), even without plugins. :sp **/foo<Tab>, for example, is quick and easy. :Ex foo/bar as well.
Switching buffers is also very easy, if a bit awkward at first. :bn, :bN and :b <Tab> will get you a long way.
And if you don't like those built-in methods, you can create your own cool mappings or choose from many plugins.
"Semantic" navigation
I like to think about my project in class/method names rather than in file names. With an up-to-date tags file (generated with ctags or some compatible program), :tag foo is a very efficient way to move around, <C-]> jumps to the definition of the tag under the cursor and <C-w>} opens that definition in a small preview window. That's more than enough for my needs.
I don't particularly like them but you can also use TagBar or TagList to have something that resembles the class browser of your IDE.
I'd suggest you make your needs more clear and ask more specific questions or look around on SO. The subjects above are pretty well covered.
Just a few pointers: I like NERDTree and CtrlP for easy/powerful file navigation and splits for keeping several files visable and navigatable at the same time.

C++ Cross Ref for VIM similar to Source Insight

I wanted a cross reference navigation similar to Source Insight.
Lets take simple example:
classA::MethodB()
{
...
m_variable = value;
}
In this example if I use Ctags / Cscope, then when I try to find m_variable, it will show me all the available m_variable. I need to go through each and then find which one is required.
Where as in Source Insight, it clearly gives me the Class delectation.
Is there any such Cross ref tools available for Vim?
Vim is not an IDE, it's a text editor.
You can't reasonably expect it to understand your code as well or as deeply as an IDE.
IDEs typically keep a dynamic internal representation of your code which makes them able to track declaration and usage even when you have dozens of methods or variables with the same name. Vim, like most text editors, is not able to do that on its own: it must rely on external tools for indexing/navigating through your code. Now, because of architectural constraints, Vim is incapable of running any background process which is the absolute prerequisite for a real "code intelligence" to be added to Vim.
Given all that, you are left with code indexers like ctags, cscope or GLOBAL. These tools do their best trying to give you accurate results but they are not as smart and as specific as the tools used in IDEs.
To compensate, Vim has a bunch of different commands like :tselect or g] which open a list of possible tags to chose from. Read :h tags, :h ctags and :h cscope for how to deal with those limitations.
I've not tried this myself. But sounds like eclim is what you're looking for. http://eclim.org/
It provides eclipse features to be accessible from Vim, including code searching and auto-completion.

Using Sublime 2 for Haskell Development?

What is the current status of Sublime 2 integration for Haskell? I see two possible packages so far. A plugin for code highlighting and a REPL plugin.
Is there an intelli-sense plugin for Haskell?
Maybe integration with Hackage as well?
Thanks.
SublimeHaskell plugin is the modern choice for Haskell development with SublimeText. It is well maintained and has plenty of useful features.
Other quite useful plugins:
Shell Turtlestein, which allows you to quickly type in shell commands under a single keystroke from inside the editor.
SublimeREPL, which allows you to run GHCi from inside the editor. Though without support for cabal repl yet.
SideBarEnhancements, which I primarily use to rename/move files without touching the mouse. With it you can hit Ctrl/Cmd + P and type "rename" or "move" to enter the dialogue.
I use Sublime exclusively at the moment and while it's not all that special out of the box, installing sublime-text-haskell as Cubic suggested makes it a little better (it will compile and highlight errors when you save a file and apparently enhances the auto-completion).
I've experimented with writing my own plugins but the reality is that a lot of really cool possibilities are made difficult to implement because the API is actually kind of restricting (there's no way to add extra information like type signatures to auto-complete options for example).
It seems that the dev(s) are working on adding some requested API features, but until then, sublime-text-haskell is probably the best Haskell plugin.

VIM as an IDE - Suggestions

I am looking for recommendations on using VIM as an IDE. I generally code in a number of programming languages, including C, C++, assembler, MATLAB, Maple, BASH scripts, to name a few.
In general, I like to use a single IDE for the bulk of my projects for the sake of consistency, and I have found that I perform about 90% of all my coding in VIM, and occasionally use Eclipse instead for certain projects in C/C++ (ie: projects people have already put together as an Eclipse project, or PIC24/32 projects from www.microchip.com).
I am already very familiar with the basic functionality of VIM (windows vs buffers, text manipulation, scripting), and would like to use it as my primary IDE. I have already taken a few tips from here:
http://vim.wikia.com/wiki/Use_Vim_like_an_IDE#Writing_Code
I already use the nerdTree plugin for directory browsing in a project, etc, but I need to do something about code completion and symbol resolution, as those are my two greatest concerns.
Symbol resolution
I have some limited experience in the use of C-tags, and wanted a suggestion on what I should use if I am working with a VERY large code-base that changes frequently. The projects I work on typically are pulling in header files from at least a dozen other projects, and I would like to be able to jump to the file where a function, constant, or macro is defined quickly (ie: like the CTRL-G feature in Eclipse, "jump to definition"), as well as rapidly get a list of all calls/references to a function/macro/constant/etc (ie: like the CTRL-SHIFT-G feature in Eclipse, "Show all references in project or current working directory").
Tab completion
One of the features I really like in Visual Studio and Eclipse, for example, is when I type in a variable name (ie: pointer to struct) and it resolves the names and types of all structure members and gives me a tab completion list to choose the appropriate member. They also point out when I've incorrectly used "." vs "->" for member access. I've tried superTab in VIM, but I just couldn't get it working. I also want the tab-completion feature to use the same C-tags as generated by the symbol resolution plugin
Handling build output
The final concern of mine is having an auto-generated list of build warnings and build errors. When I, for example, just run "make all" at the command-line prompt, it is a pain to have to read through code listings to manually find all build warnings.
I realize this is a lot to ask, and that I could always just fall-back to Visual Studio or Eclipse, but I really want just a simple cross-platform console-capable modal editor for all my development needs, and none of the major IDE's out there fill this need.
Thank you all in advance.
http://eclim.org/ - bring Eclipse functionality to the Vim editor
https://github.com/scrooloose/syntastic - syntax checker warnings in quickfix list
I think (but haven't checked) that Eclim satisfies #1 and #2 while I'm sure that Syntastic satisfies #3. More things of interest:
https://github.com/Lokaltog/vim-powerline - just nice
https://github.com/kien/ctrlp.vim - quick file finder
https://github.com/tpope/vim-pathogen - plugin manager (to install the others)
And are you aware of omnicompletion via Ctrl-p and Ctrl-n (prev and next) in insert mode? That's not code completion, but frequently does the job.
For the auto-completion part (point 2), I am proficiently using clang_complete.
For a quick setup and reference, try this page: http://zwiener.org/vimautocomplete.html
EDIT: this is for C, C++ and Objective-C only.
I use the following configuration in vim:
zipped file
It has autocomplete based on tag list, ctags, nerd commenter and some more plugins.
Hope it helps.. :)
I have been using Vim as an IDE for about a year now. All of my customization is online at github.
That said, I don't think a Vim beginner should start using vim like this; rather I think the Vim beginner should learn vim incrementally. The only changes that I think are so essential I would make them from the very beginning are:
Remap ESC to jk
Switch : and ;
Set leader key to ,

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