vim-config/after/ftplugin/rust.vim

let g:rust_doc#define_map_K = 0
let g:rust_doc#downloaded_rust_doc_dir = '~/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu'

function! s:search_under_cursor(query) range
	if a:query ==# ''
		echomsg "rust-doc: No identifier is found under the cursor"
		return
	endif

	call rust_doc#open_fuzzy(a:query)
endfunction

" keys
nnoremap <buffer><silent><F7> :<C-u>call <SID>search_under_cursor(expand('<cword>'))<CR>
vnoremap <buffer><silent><F7> "gy:call <SID>search_under_cursor(getreg('g'))<CR>

" rusty-tags
autocmd BufRead *.rs :setlocal tags=./rusty-tags.vi;/
autocmd BufWritePost *.rs :silent! exec "!rusty-tags vi --quiet --start-dir=" . expand('%:p:h') . "&" | redraw!

let g:tagbar_ctags_bin = '/usr/bin/exuberant-ctags'


" nnoremap <F3> :call LanguageClient_contextMenu()<CR>
" nnoremap <silent> <F4> :call LanguageClient#textDocument_definition()<CR>
" nnoremap <silent> <F6> :call LanguageClient#textDocument_hover()<CR>
" nnoremap <silent> <F8> :call LanguageClient#textDocument_rename()<CR>


" let g:LanguageClient_autoStart = 1

" let g:LanguageClient_serverCommands = {
    " \ 'rust': ['rustup', 'run', 'nightly', 'rls'] }

" let g:LanguageClient_diagnosticsEnable = 0

" let g:ale_linters = {'rust': ['rls']}
" let g:ale_fixers = { 'rust': ['rustfmt'] }

" let g:ale_fix_on_save = 0
" let g:autofmt_autosave = 0

" deoplete
call deoplete#custom#option('sources',{
	\ '_': ['buffer'],
	\ 'rust': ['ultisnips', 'buffer', 'file', 'LanguageClient']
	\ })
inoremap <expr><tab> pumvisible() ? "\<c-n>" : "\<tab>"
call deoplete#enable()

let g:LanguageClient_serverCommands = {
   \ 'rust': ['~/.cargo/bin/ra_lsp_server'],
   \ }