feat: added support for vim.diagnostics and Neovim 0.7

lua/trouble/providers/diagnostic.lua

@@ -5,14 +5,24 @@ local M = {}
 
 ---@param options TroubleOptions
 ---@return Item[]
-function M.diagnostics(_win, buf, cb, options)
+function M.diagnostics(_, buf, cb, options)
   if options.mode == "workspace_diagnostics" then
     buf = nil
   end
 
-  local buffer_diags = buf and { [buf] = vim.lsp.diagnostic.get(buf) } or vim.lsp.diagnostic.get_all()
+  local items = {}
+
+  if vim.diagnostic then
+    local diags = vim.diagnostic.get(buf)
+    for _, item in ipairs(diags) do
+      table.insert(items, util.process_item(item))
+    end
+  else
+    ---@diagnostic disable-next-line: deprecated
+    local diags = buf and { [buf] = vim.lsp.diagnostic.get(buf) } or vim.lsp.diagnostic.get_all()
+    items = util.locations_to_items(diags, 1)
+  end
 
-  local items = util.locations_to_items(buffer_diags, 1)
   cb(items)
 end
 

lua/trouble/renderer.lua

@@ -78,7 +78,7 @@ function renderer.render(view, opts)
   end, config.options)
 end
 
----@param view View
+---@param view TroubleView
 ---@param text Text
 ---@param items Item[]
 ---@param filename string
@@ -111,7 +111,7 @@ function renderer.render_file(view, text, filename, items)
   end
 end
 
----@param view View
+---@param view TroubleView
 ---@param text Text
 ---@param items Item[]
 function renderer.render_diagnostics(view, text, items)

lua/trouble/util.lua

@@ -113,11 +113,30 @@ end
 -- see https://github.com/nvim-telescope/telescope.nvim/blob/0d6cd47990781ea760dd3db578015c140c7b9fa7/lua/telescope/utils.lua#L85
 
 function M.process_item(item, bufnr)
+  bufnr = bufnr or item.bufnr
   local filename = vim.api.nvim_buf_get_name(bufnr)
   local uri = vim.uri_from_bufnr(bufnr)
-  local range = item.range or item.targetSelectionRange
+  local range = item.range
+    or item.targetSelectionRange
+    or {
+      ["start"] = {
+        character = item.col,
+        line = item.lnum,
+      },
+      ["end"] = {
+        character = item.end_col,
+        line = item.end_lnum,
+      },
+    }
   local start = range["start"]
   local finish = range["end"]
+
+  if start.character == nil or start.line == nil then
+    M.error("Found an item for Trouble without start range " .. vim.inspect(start))
+  end
+  if finish.character == nil or finish.line == nil then
+    M.error("Found an item for Trouble without finish range " .. vim.inspect(finish))
+  end
   local row = start.line
   local col = start.character
 

lua/trouble/view.lua

@@ -8,6 +8,7 @@ local highlight = vim.api.nvim_buf_add_highlight
 ---@class TroubleView
 ---@field buf number
 ---@field win number
+---@field group boolean
 ---@field items Item[]
 ---@field folded table<string, boolean>
 ---@field parent number