Vim: How to go to the declaration (of a class, method, function, variable, etc)

Question

Right now I am working on a file which uses many classes, methods, functions, variables, etc. Is it possible to go to the declaration of all of them? Please, take into account t

Answer 1

I use the you complete me (ycm) plugin for this, which is

a fast, as-you-type, fuzzy-search code completion engine for Vim

It works with a bunch of languages and is very powerful. Check this section for how to install it on your system.

When e.g. using it with a Java Maven project, open the desired file from the folder that contains your pom.xml file and the plugin scans all your files and dependencies.

I do have the following key mappings in my ~/.vimrc for convenient use of your requested feature:

let g:ycm_key_list_select_completion = ['', '']
let g:ycm_key_list_previous_completion = ['', '']
let g:SuperTabDefaultCompletionType = ''
nnoremap jd :YcmCompleter GoToDefinitionElseDeclaration
nnoremap ji :YcmCompleter GoToImplementation
nnoremap jr :YcmCompleter GoToReferences

Assuming your is mapped to , with let mapleader = "," as in my case the following commands work:

• ,jd go to definition or declaration
• ,ji go to implementation
• ,jr go to references
• Ctrl+n/Ctrl+p move down/up in a list that pops up for autocompletion