feature: vim.api.diagnostics has been moved to vim.diagnostics in neovim head (#1573)

lua/lsp/handlers.lua

@@ -19,11 +19,41 @@ function M.setup()
       end
 
       local diagnostics = result.diagnostics
-      vim.lsp.diagnostic.save(diagnostics, bufnr, ctx.client_id)
-      if not vim.api.nvim_buf_is_loaded(bufnr) then
-        return
+      local ok, vim_diag = pcall(require, "vim.diagnostic")
+      if ok then
+        -- FIX: why can't we just use vim.diagnostic.get(buf_id)?
+        config.signs = true
+        for i, diagnostic in ipairs(diagnostics) do
+          local rng = diagnostic.range
+          diagnostics[i].lnum = rng["start"].line
+          diagnostics[i].end_lnum = rng["end"].line
+          diagnostics[i].col = rng["start"].character
+          diagnostics[i].end_col = rng["end"].character
+        end
+        local namespace = vim.lsp.diagnostic.get_namespace(ctx.client_id)
+
+        vim_diag.set(namespace, bufnr, diagnostics, config)
+        if not vim.api.nvim_buf_is_loaded(bufnr) then
+          return
+        end
+
+        local sign_names = {
+          "DiagnosticSignError",
+          "DiagnosticSignWarn",
+          "DiagnosticSignInfo",
+          "DiagnosticSignHint",
+        }
+        for i, sign in ipairs(lvim.lsp.diagnostics.signs.values) do
+          vim.fn.sign_define(sign_names[i], { texthl = sign_names[i], text = sign.text, numhl = "" })
+        end
+        vim_diag.show(namespace, bufnr, diagnostics, config)
+      else
+        vim.lsp.diagnostic.save(diagnostics, bufnr, ctx.client_id)
+        if not vim.api.nvim_buf_is_loaded(bufnr) then
+          return
+        end
+        vim.lsp.diagnostic.display(diagnostics, bufnr, ctx.client_id, config)
       end
-      vim.lsp.diagnostic.display(diagnostics, bufnr, ctx.client_id, config)
     end
   else
     vim.lsp.handlers["textDocument/publishDiagnostics"] = function(_, _, params, client_id, _)
@@ -53,17 +83,30 @@ end
 
 function M.show_line_diagnostics()
   local diagnostics = vim.lsp.diagnostic.get_line_diagnostics()
+  local severity_highlight = {
+    "LspDiagnosticsFloatingError",
+    "LspDiagnosticsFloatingWarning",
+    "LspDiagnosticsFloatingInformation",
+    "LspDiagnosticsFloatingHint",
+  }
+  local ok, vim_diag = pcall(require, "vim.diagnostic")
+  if ok then
+    local buf_id = vim.api.nvim_win_get_buf(0)
+    local win_id = vim.api.nvim_get_current_win()
+    local cursor_position = vim.api.nvim_win_get_cursor(win_id)
+    severity_highlight = {
+      "DiagnosticFloatingError",
+      "DiagnosticFloatingWarn",
+      "DiagnosticFloatingInfo",
+      "DiagnosticFloatingHint",
+    }
+    diagnostics = vim_diag.get(buf_id, { lnum = cursor_position[1] - 1 })
+  end
   local diags = vim.deepcopy(diagnostics)
   local height = #diagnostics
   local width = 0
   local opts = {}
   local close_events = { "CursorMoved", "CursorMovedI", "BufHidden", "InsertCharPre" }
-  local diagnostic_severities = {
-    "Error",
-    "Warning",
-    "Information",
-    "Hint",
-  }
   if height == 0 then
     return
   end
@@ -99,14 +142,7 @@ function M.show_line_diagnostics()
   for i, diag in ipairs(diags) do
     local message = diag.message:gsub("[\n\r]", " ")
     vim.api.nvim_buf_set_lines(bufnr, i - 1, i - 1, 0, { message })
-    vim.api.nvim_buf_add_highlight(
-      bufnr,
-      -1,
-      "LspDiagnosticsFloating" .. diagnostic_severities[diag.severity],
-      i - 1,
-      0,
-      diag.message:len()
-    )
+    vim.api.nvim_buf_add_highlight(bufnr, -1, severity_highlight[diag.severity], i - 1, 0, diag.message:len())
   end
 
   vim.api.nvim_command(

lua/onedarker/LSP.lua

@@ -11,10 +11,18 @@ local LSP = {
   LspDiagnosticsFloatingWarning = { fg = C.warning_orange },
   LspDiagnosticsFloatingInformation = { fg = C.info_yellow },
   LspDiagnosticsFloatingHint = { fg = C.hint_blue },
+  DiagnosticFloatingError = { fg = C.error_red },
+  DiagnosticFloatingWarn = { fg = C.warning_orange },
+  DiagnosticFloatingInfo = { fg = C.info_yellow },
+  DiagnosticFloatingHint = { fg = C.hint_blue },
   LspDiagnosticsSignError = { fg = C.error_red },
   LspDiagnosticsSignWarning = { fg = C.warning_orange },
   LspDiagnosticsSignInformation = { fg = C.info_yellow },
   LspDiagnosticsSignHint = { fg = C.hint_blue },
+  DiagnosticSignError = { fg = C.error_red },
+  DiagnosticSignWarn = { fg = C.warning_orange },
+  DiagnosticSignInfo = { fg = C.info_yellow },
+  DiagnosticSignHint = { fg = C.hint_blue },
   LspDiagnosticsError = { fg = C.error_red },
   LspDiagnosticsWarning = { fg = C.warning_orange },
   LspDiagnosticsInformation = { fg = C.info_yellow },
@@ -23,6 +31,10 @@ local LSP = {
   LspDiagnosticsUnderlineWarning = { style = "underline" },
   LspDiagnosticsUnderlineInformation = { style = "underline" },
   LspDiagnosticsUnderlineHint = { style = "underline" },
+  DiagnosticUnderlineError = { style = "underline" },
+  DiagnosticUnderlineWarn = { style = "underline" },
+  DiagnosticUnderlineInfo = { style = "underline" },
+  DiagnosticUnderlineHint = { style = "underline" },
   QuickScopePrimary = { fg = C.purple_test, style = "underline" },
   QuickScopeSecondary = { fg = C.cyan_test, style = "underline" },
   TelescopeSelection = { fg = C.hint_blue },