Improved null-ls integration

config/nvim/lua/nifoc/config/lsp.lua

@@ -1,37 +1,18 @@
 local lsp = require('lspconfig')
 local lsp_status = require('lsp-status')
 local illuminate = require('illuminate')
-local keymap = require('nifoc.keymap')
-
-local function enable_lsp_fixer(_)
-  vim.cmd [[
-    augroup nifoc_lsp_formatting
-      autocmd! * <buffer>
-      autocmd BufWritePre <buffer> lua vim.lsp.buf.formatting_sync(nil, 1000)
-    augroup end
-  ]]
-end
+local diagnostic_utils = require('nifoc.utils.diagnostic')
 
 local function custom_attach(client, bufnr)
   -- Plugin attachments
   lsp_status.on_attach(client)
-  keymap.lsp_attach(client, bufnr)
 
   if client.resolved_capabilities.document_highlight then
     illuminate.on_attach(client)
   end
 
-  if vim.b.nifoc_lsp_enabled == nil then
-    vim.api.nvim_buf_set_var(bufnr, 'nifoc_lsp_enabled', 1)
-    vim.cmd("setlocal omnifunc=v:lua.vim.lsp.omnifunc")
-  end
-
-  if client.resolved_capabilities.document_formatting and vim.b.nifoc_fixer_enabled == nil then
-    vim.api.nvim_buf_set_var(bufnr, 'nifoc_fixer_enabled', 1)
-
-    enable_lsp_fixer(client)
-  end
-
+  diagnostic_utils.maybe_enable_lsp(client, bufnr)
+  diagnostic_utils.maybe_enable_fixer(client, bufnr)
   vim.api.nvim_command('doautocmd <nomodeline> User NifocLspAttached')
 end
 
@@ -42,22 +23,19 @@ end
 
 -- Setup
 
-vim.cmd('sign define LspDiagnosticsSignError text= texthl=LspDiagnosticsSignError linehl= numhl=')
-vim.cmd('sign define LspDiagnosticsSignWarning text= texthl=LspDiagnosticsSignWarning linehl= numhl=')
-vim.cmd('sign define LspDiagnosticsSignInformation text= texthl=LspDiagnosticsSignInformation linehl= numhl=')
-vim.cmd('sign define LspDiagnosticsSignHint text= texthl=LspDiagnosticsSignHint linehl= numhl=')
+vim.cmd('sign define DiagnosticSignError text= texthl=DiagnosticSignError linehl= numhl=')
+vim.cmd('sign define DiagnosticSignWarn text= texthl=DiagnosticSignWarn linehl= numhl=')
+vim.cmd('sign define DiagnosticSignInfo text= texthl=DiagnosticSignInfo linehl= numhl=')
+vim.cmd('sign define DiagnosticSignHint text= texthl=DiagnosticSignHint linehl= numhl=')
 
-vim.lsp.handlers["textDocument/publishDiagnostics"] = vim.lsp.with(
-  vim.lsp.diagnostic.on_publish_diagnostics, {
+vim.diagnostic.config({
   underline = true,
   virtual_text = {
-      prefix = '■ ',
-      spacing = 4,
+    source = 'if_many',
   },
   signs = false,
   update_in_insert = false,
-  }
-)
+})
 
 lsp_status.register_progress()
 

config/nvim/lua/nifoc/config/null_ls.lua

@@ -1,5 +1,6 @@
 local null_ls = require('null-ls')
 local builtins = null_ls.builtins
+local diagnostic_utils = require('nifoc.utils.diagnostic')
 
 null_ls.setup({
   sources = {
@@ -9,4 +10,9 @@ null_ls.setup({
     builtins.diagnostics.shellcheck.with({extra_args = { '-f', 'gcc', '-x' }}),
     builtins.formatting.shfmt.with({extra_args = { '-i', '2' }}),
   },
+
+  on_attach = function(client, bufnr)
+    diagnostic_utils.maybe_enable_lsp(client, bufnr)
+    diagnostic_utils.maybe_enable_fixer(client, bufnr)
+  end,
 })

config/nvim/lua/nifoc/keymap.lua

@@ -154,11 +154,11 @@ function M.lsp_attach(client, bufnr)
       d = {
         name = "diagnostics",
         d = {
-          "<cmd>LspTroubleToggle lsp_document_diagnostics<CR>",
+          "<cmd>TroubleToggle document_diagnostics<CR>",
           "Document Diagnostics"
         },
         w = {
-          "<cmd>LspTroubleToggle lsp_workspace_diagnostics<CR>",
+          "<cmd>TroubleToggle workspace_diagnostics<CR>",
           "Workspace Diagnostics"
         },
       },
@@ -172,11 +172,11 @@ function M.lsp_attach(client, bufnr)
       f = {
         name = "find",
         r = {
-          "<cmd>LspTroubleToggle lsp_references<CR>",
+          "<cmd>TroubleToggle lsp_references<CR>",
           "References"
         },
         d = {
-          "<cmd>LspTroubleToggle lsp_definitions<CR>",
+          "<cmd>TroubleToggle lsp_definitions<CR>",
           "Definitions"
         },
       },

config/nvim/lua/nifoc/utils/diagnostic.lua

@@ -0,0 +1,26 @@
+local M = {}
+
+local keymap = require('nifoc.keymap')
+
+function M.maybe_enable_lsp(client, bufnr)
+  if vim.b.nifoc_lsp_enabled == nil then
+    vim.api.nvim_buf_set_var(bufnr, 'nifoc_lsp_enabled', 1)
+
+    keymap.lsp_attach(client, bufnr)
+  end
+end
+
+function M.maybe_enable_fixer(client, bufnr)
+  if client.resolved_capabilities.document_formatting and vim.b.nifoc_fixer_enabled == nil then
+    vim.api.nvim_buf_set_var(bufnr, 'nifoc_fixer_enabled', 1)
+
+    vim.cmd [[
+      augroup nifoc_diagnostic_formatting
+        autocmd! * <buffer>
+        autocmd BufWritePre <buffer> lua vim.lsp.buf.formatting_sync(nil, 1000)
+      augroup end
+    ]]
+  end
+end
+
+return M