feat: fix nvim-lsp configuration and add some keybings to it

nvim/init.vim

@@ -1,6 +1,9 @@
 syntax on
 filetype plugin indent on
 
+
+let mapleader = " "
+
 " Plugins
 call plug#begin('~/.vim/plugged')
 	
@@ -69,14 +72,13 @@ colorscheme material
 
 
 " Use <Tab> and <S-Tab> to navigate through popup menu
-inoremap <expr> <Tab>   pumvisible() ? "\<C-n>" : "\<Tab>"
-inoremap <expr> <S-Tab> pumvisible() ? "\<C-p>" : "\<S-Tab>"
+"inoremap <expr> <Tab>   pumvisible() ? "\<C-n>" : "\<Tab>"
+"inoremap <expr> <S-Tab> pumvisible() ? "\<C-p>" : "\<S-Tab>"
 
 " Tree-sitter config
 lua require'nvim-treesitter.configs'.setup { highlight = { enable = true }, incremental_selection = { enable = true }, textobjects = { enable = true }}
 
 " keyboard shortcut options
-let mapleader = " "
 nnoremap <leader>n gt
 nnoremap <leader>m gT
 

nvim/lua/init.lua

@@ -25,6 +25,8 @@ local cmp = require'cmp'
 cmp.setup({
         mapping = {
                 ["<C-e>"] = cmp.mapping.close(),
+                ["<C-p>"] = cmp.mapping.select_prev_item(),
+                ["<C-n>"] = cmp.mapping.select_next_item(),
                 ["<C-d>"] = cmp.mapping.scroll_docs(-4),
                 ["<C-f>"] = cmp.mapping.scroll_docs(4),
                 ["<C-y>"] = cmp.mapping.confirm {
@@ -32,6 +34,8 @@ cmp.setup({
                         select = true,
                 },
                 ["<C-space>"] = cmp.mapping.complete(),
+                ["<Tab>"] = cmp.mapping(cmp.mapping.select_next_item(), { "i", "s" }),
+                ["<S-Tab>"] = cmp.mapping(cmp.mapping.select_prev_item(), { "i", "s" }),
         },
 
         sources = {
@@ -52,22 +56,42 @@ cmp.setup({
                 native_menu = false
         }
 })
--- Setup lspconfig.
--- Replace <YOUR_LSP_SERVER> with each lsp server you've enabled.
-require('lspconfig')['gopls'].setup {
-	capabilities = capabilities
-}
 
-require('lspconfig')['rust_analyzer'].setup {
-	capabilities = capabilities
-}
+local opts = { noremap=true, silent=true }
+vim.api.nvim_set_keymap('n', '<space>e', '<cmd>lua vim.diagnostic.open_float()<CR>', opts)
+vim.api.nvim_set_keymap('n', '[d', '<cmd>lua vim.diagnostic.goto_prev()<CR>', opts)
+vim.api.nvim_set_keymap('n', ']d', '<cmd>lua vim.diagnostic.goto_next()<CR>', opts)
+vim.api.nvim_set_keymap('n', '<space>q', '<cmd>lua vim.diagnostic.setloclist()<CR>', opts)
 
-require('lspconfig')['jedi_language_server'].setup {
-	capabilities = capabilities
-}
+local on_attach = function(client, bufnr)
+  -- Enable completion triggered by <c-x><c-o>
+  vim.api.nvim_buf_set_option(bufnr, 'omnifunc', 'v:lua.vim.lsp.omnifunc')
 
-require('lspconfig')['clangd'].setup {
-	capabilities = capabilities
-}
+  -- Mappings.
+  -- See `:help vim.lsp.*` for documentation on any of the below functions
+  vim.api.nvim_buf_set_keymap(bufnr, 'n', 'gD', '<cmd>lua vim.lsp.buf.declaration()<CR>', opts)
+  vim.api.nvim_buf_set_keymap(bufnr, 'n', 'gd', '<cmd>lua vim.lsp.buf.definition()<CR>', opts)
+  vim.api.nvim_buf_set_keymap(bufnr, 'n', 'K', '<cmd>lua vim.lsp.buf.hover()<CR>', opts)
+  vim.api.nvim_buf_set_keymap(bufnr, 'n', 'gi', '<cmd>lua vim.lsp.buf.implementation()<CR>', opts)
+  vim.api.nvim_buf_set_keymap(bufnr, 'n', '<C-k>', '<cmd>lua vim.lsp.buf.signature_help()<CR>', opts)
+  vim.api.nvim_buf_set_keymap(bufnr, 'n', '<leader>wa', '<cmd>lua vim.lsp.buf.add_workspace_folder()<CR>', opts)
+  vim.api.nvim_buf_set_keymap(bufnr, 'n', '<leader>wr', '<cmd>lua vim.lsp.buf.remove_workspace_folder()<CR>', opts)
+  vim.api.nvim_buf_set_keymap(bufnr, 'n', '<leader>wl', '<cmd>lua print(vim.inspect(vim.lsp.buf.list_workspace_folders()))<CR>', opts)
+  vim.api.nvim_buf_set_keymap(bufnr, 'n', '<leader>D', '<cmd>lua vim.lsp.buf.type_definition()<CR>', opts)
+  vim.api.nvim_buf_set_keymap(bufnr, 'n', '<leader>rn', '<cmd>lua vim.lsp.buf.rename()<CR>', opts)
+  vim.api.nvim_buf_set_keymap(bufnr, 'n', '<leader>ca', '<cmd>lua vim.lsp.buf.code_action()<CR>', opts)
+  vim.api.nvim_buf_set_keymap(bufnr, 'n', 'gr', '<cmd>lua vim.lsp.buf.references()<CR>', opts)
+  vim.api.nvim_buf_set_keymap(bufnr, 'n', '<leader>f', '<cmd>lua vim.lsp.buf.formatting()<CR>', opts)
+end
 
 
+local servers = { 'gopls', 'clangd', 'jedi_language_server' , 'rust_analyzer', 'tsserver' }
+for _, lsp in pairs(servers) do
+  require('lspconfig')[lsp].setup {
+    on_attach = on_attach,
+    flags = {
+      -- This will be the default in neovim 0.7+
+      debounce_text_changes = 150,
+    }
+  }
+end