Switch to rust-analyzer

init.vim

@@ -12,6 +12,7 @@ source plug.vim
 source airline.vim
 source syntastic.vim
 source fzf.vim
+source rust.vim
 source mapping.vim
 source jsonnet.vim
 source nerdtree.vim

mapping.vim

@@ -11,3 +11,20 @@ nmap <F8> :NERDTreeToggle<CR>
 nmap <S-F8> :NERDTreeFind<CR>
 " use similar key, esc, to exit terminal mode
 tnoremap <C-Space><Esc> <C-\><C-n>
+
+" from: https://sharksforarms.dev/posts/neovim-rust/
+" Code navigation shortcuts
+nnoremap <silent> <c-]> <cmd>lua vim.lsp.buf.definition()<CR>
+nnoremap <silent> K     <cmd>lua vim.lsp.buf.hover()<CR>
+nnoremap <silent> gD    <cmd>lua vim.lsp.buf.implementation()<CR>
+nnoremap <silent> <c-k> <cmd>lua vim.lsp.buf.signature_help()<CR>
+nnoremap <silent> 1gD   <cmd>lua vim.lsp.buf.type_definition()<CR>
+nnoremap <silent> gr    <cmd>lua vim.lsp.buf.references()<CR>
+nnoremap <silent> g0    <cmd>lua vim.lsp.buf.document_symbol()<CR>
+nnoremap <silent> gW    <cmd>lua vim.lsp.buf.workspace_symbol()<CR>
+nnoremap <silent> gd    <cmd>lua vim.lsp.buf.definition()<CR>
+nnoremap <silent> ga    <cmd>lua vim.lsp.buf.code_action()<CR>
+
+" Goto previous/next diagnostic warning/error
+nnoremap <silent> g[ <cmd>lua vim.lsp.diagnostic.goto_prev()<CR>
+nnoremap <silent> g] <cmd>lua vim.lsp.diagnostic.goto_next()<CR>

plug.vim

@@ -28,13 +28,37 @@ Plug 'junegunn/fzf',  { 'dir': '~/.fzf', 'do': './install --all' }
 Plug 'junegunn/fzf.vim'
 " auto detect tab and space handling rather than setting per project
 Plug 'tpope/vim-sleuth'
+
+
 " support for the Rust programming language
 Plug 'rust-lang/rust.vim'
-Plug 'simrat39/rust-tools.nvim'
-" support for Rust's build tool/dependency manager
-Plug 'timonv/vim-cargo'
-" support for lsp
+
+" the rest of the rust config came from: https://sharksforarms.dev/posts/neovim-rust/
+" Collection of common configurations for the Nvim LSP client
 Plug 'neovim/nvim-lspconfig'
+
+" Completion framework
+Plug 'hrsh7th/nvim-cmp'
+
+" LSP completion source for nvim-cmp
+Plug 'hrsh7th/cmp-nvim-lsp'
+
+" Snippet completion source for nvim-cmp
+Plug 'hrsh7th/cmp-vsnip'
+
+" Other usefull completion sources
+Plug 'hrsh7th/cmp-path'
+Plug 'hrsh7th/cmp-buffer'
+
+" See hrsh7th's other plugins for more completion sources!
+
+" To enable more of the features of rust-analyzer, such as inlay hints and more!
+Plug 'simrat39/rust-tools.nvim'
+
+" Snippet engine
+Plug 'hrsh7th/vim-vsnip'
+
+
 " support for jsonnet
 Plug 'google/vim-jsonnet'
 " groovy syntax and indent
@@ -45,8 +69,6 @@ Plug 'vim-scripts/groovyindent-unix'
 Plug 'Chiel92/vim-autoformat'
 " taskwarrior
 Plug 'xarthurx/taskwarrior.vim'
-" support for lsp in gnvim
-Plug 'vhakulinen/gnvim-lsp'
 " Wiki support
 Plug 'vimwiki/vimwiki'
 " Preferred color scheme

rust.vim

@@ -0,0 +1,79 @@
+" from: https://sharksforarms.dev/posts/neovim-rust/
+" Set completeopt to have a better completion experience
+" :help completeopt
+" menuone: popup even when there's only one match
+" noinsert: Do not insert text until a selection is made
+" noselect: Do not select, force user to select one from the menu
+set completeopt=menuone,noinsert,noselect
+
+" Avoid showing extra messages when using completion
+set shortmess+=c
+
+" Configure LSP through rust-tools.nvim plugin.
+" rust-tools will configure and enable certain LSP features for us.
+" See https://github.com/simrat39/rust-tools.nvim#configuration
+lua <<EOF
+local nvim_lsp = require'lspconfig'
+
+local opts = {
+    tools = { -- rust-tools options
+        autoSetHints = true,
+        hover_with_actions = true,
+        inlay_hints = {
+            show_parameter_hints = false,
+            parameter_hints_prefix = "",
+            other_hints_prefix = "",
+        },
+    },
+
+    -- all the opts to send to nvim-lspconfig
+    -- these override the defaults set by rust-tools.nvim
+    -- see https://github.com/neovim/nvim-lspconfig/blob/master/CONFIG.md#rust_analyzer
+    server = {}, -- rust-analyer options
+}
+
+require('rust-tools').setup(opts)
+EOF
+
+" Setup Completion
+" See https://github.com/hrsh7th/nvim-cmp#basic-configuration
+lua <<EOF
+local cmp = require'cmp'
+cmp.setup({
+  -- Enable LSP snippets
+  snippet = {
+    expand = function(args)
+        vim.fn["vsnip#anonymous"](args.body)
+    end,
+  },
+  mapping = {
+    ['<C-p>'] = cmp.mapping.select_prev_item(),
+    ['<C-n>'] = cmp.mapping.select_next_item(),
+    -- Add tab support
+    ['<S-Tab>'] = cmp.mapping.select_prev_item(),
+    ['<Tab>'] = cmp.mapping.select_next_item(),
+    ['<C-d>'] = cmp.mapping.scroll_docs(-4),
+    ['<C-f>'] = cmp.mapping.scroll_docs(4),
+    ['<C-Space>'] = cmp.mapping.complete(),
+    ['<C-e>'] = cmp.mapping.close(),
+    ['<CR>'] = cmp.mapping.confirm({
+      behavior = cmp.ConfirmBehavior.Insert,
+      select = true,
+    })
+  },
+
+  -- Installed sources
+  sources = {
+    { name = 'nvim_lsp' },
+    { name = 'vsnip' },
+    { name = 'path' },
+    { name = 'buffer' },
+  },
+})
+EOF
+
+" Set updatetime for CursorHold
+" 300ms of no cursor movement to trigger CursorHold
+set updatetime=300
+" Show diagnostic popup on cursor hold
+autocmd CursorHold * lua vim.lsp.diagnostic.show_line_diagnostics()

syntastic.vim

@@ -4,8 +4,8 @@
 let g:syntastic_always_populate_loc_list = 1
 " open but only when errors are detected; default closes when errors are cleared
 " but doesn't open the list automatically
-let g:syntastic_auto_loc_list = 1
+let g:syntastic_auto_loc_list = 0
 " check when first opening a file
-let g:syntastic_check_on_open = 1
+let g:syntastic_check_on_open = 0
 " don't check on writing and quitting
 let g:syntastic_check_on_wq = 0