up

lua/lsp_settings.lua

@@ -54,6 +54,9 @@ require('mason-lspconfig').setup_handlers {
       capabilities = capabilities,
       settings = {
         Lua = {
+          completion = {
+            callSnippet = 'Replace',
+          },
           diagnostics = {
             globals = { 'vim' }
           }
@@ -66,8 +69,17 @@ require('mason-lspconfig').setup_handlers {
       capabilities = capabilities,
       settings = {
         gopls = {
-          gofumpt = true
+          experimentalPostfixCompletions = true,
+          gofumpt = true,
+          analyses = {
+            unusedparams = true,
+            shadow = true,
+          },
+          staticcheck = true,
         }
+      },
+      init_options = {
+        usePlaceHolders = true,
       }
     }
   end

lua/options.lua

@@ -5,7 +5,7 @@ vim.o.termguicolors = true
 vim.o.cmdheight = 1
 
 -- You will have bad experience for diagnostic messages when it's default 4000.
-vim.o.updatetime = 300
+vim.o.updatetime = 100
 vim.o.mmp = 5000
 
 -- don't give |ins-completion-menu| messages.

lua/plugins.lua

@@ -44,6 +44,10 @@ return {
       vim.g.go_highlight_fields = 1
       vim.g.go_highlight_functions = 1
       vim.g.go_highlight_function_calls = 1
+      vim.g.go_highlight_operators = 1
+      vim.g.go_highlight_extra_types = 1
+      vim.g.go_highlight_build_constraints = 1
+      vim.g.go_auto_type_info = 1
       vim.g.go_metalinter_command = 'golangci-lint'
     end
   },
@@ -206,16 +210,36 @@ return {
       { "L3MON4D3/LuaSnip" },
       { "saadparwaiz1/cmp_luasnip" },
       { "rafamadriz/friendly-snippets" },
+      { "onsails/lspkind.nvim" },
     },
     config = function()
-      require('luasnip.loaders.from_vscode').lazy_load()
+      local lspkind = require('lspkind')
+      local has_words_before = function()
+        unpack = unpack or table.unpack
+        local line, col = unpack(vim.api.nvim_win_get_cursor(0))
+        return col ~= 0 and vim.api.nvim_buf_get_lines(0, line - 1, line, true)[1]:sub(col, col):match("%s") == nil
+      end
       local cmp = require 'cmp'
+      local luasnip = require("luasnip")
       cmp.setup({
+        experimental = {
+          ghost_text = true
+        },
         snippet = {
           expand = function(args)
-            require('luasnip').lsp_expand(args.body)
+            luasnip.lsp_expand(args.body)
           end,
         },
+        formatting = {
+          format = lspkind.cmp_format({
+            mode = 'symbol',
+            maxwidth = 50,
+            ellipsis_char = '...',
+            before = function(entry, vim_item)
+              return vim_item
+            end
+          })
+        },
         window = {
           completion = cmp.config.window.bordered(),
           documentation = cmp.config.window.bordered(),
@@ -226,6 +250,28 @@ return {
               ['<C-Space>'] = cmp.mapping.complete(),
               ['<C-e>'] = cmp.mapping.abort(),
               ['<CR>'] = cmp.mapping.confirm({ select = false }),
+              ["<Tab>"] = cmp.mapping(function(fallback)
+            if cmp.visible() then
+              cmp.select_next_item()
+              -- You could replace the expand_or_jumpable() calls with expand_or_locally_jumpable()
+              -- they way you will only jump inside the snippet region
+            elseif luasnip.expand_or_jumpable() then
+              luasnip.expand_or_jump()
+            elseif has_words_before() then
+              cmp.complete()
+            else
+              fallback()
+            end
+          end, { "i", "s" }),
+              ["<S-Tab>"] = cmp.mapping(function(fallback)
+            if cmp.visible() then
+              cmp.select_prev_item()
+            elseif luasnip.jumpable(-1) then
+              luasnip.jump(-1)
+            else
+              fallback()
+            end
+          end, { "i", "s" }),
         }),
         sources = cmp.config.sources({
           { name = 'nvim_lsp' },
@@ -233,6 +279,8 @@ return {
           { name = 'path' },
           { name = 'luasnip' },
           { name = 'neorg' },
+        }, {
+          { name = 'buffer' },
         })
       })
 
@@ -259,6 +307,7 @@ return {
           { name = 'cmdline' }
         })
       })
+      require('luasnip.loaders.from_vscode').lazy_load()
     end,
   },