feat(source): added quickfix source

lua/trouble/sources/qf.lua

@@ -0,0 +1,96 @@
+---@diagnostic disable: inject-field
+local Item = require("trouble.item")
+
+---Represents an item in a Neovim quickfix/loclist.
+---@class qf.item
+---@field bufnr? number The buffer number where the item originates.
+---@field filename? string
+---@field lnum number The start line number for the item.
+---@field end_lnum? number The end line number for the item.
+---@field pattern string A pattern related to the item. It can be a search pattern or any relevant string.
+---@field col? number The column number where the item starts.
+---@field end_col? number The column number where the item ends.
+---@field module? string Module information (if any) associated with the item.
+---@field nr? number A unique number or ID for the item.
+---@field text? string A description or message related to the item.
+---@field type? string The type of the item. E.g., "W" might stand for "Warning".
+---@field valid number A flag indicating if the item is valid (1) or not (0).
+---@field user_data? any Any user data associated with the item.
+---@field vcol? number Visual column number. Indicates if the column number is a visual column number (when set to 1) or a byte index (when set to 0).
+
+---@type trouble.Source
+local M = {}
+
+---@type trouble.spec.section[]
+local sections = {
+  {
+    source = "qf.qflist",
+    groups = {
+      { "filename", format = "{file_icon} {filename} {count}" },
+    },
+    sort = { { buf = 0 }, "severity", "filename", "pos", "message" },
+    format = "{severity_icon|item.type:DiagnosticSignWarn} {text} {pos}",
+  },
+}
+
+M.modes = {
+  qflist = {
+    events = { "BufEnter", "QuickFixCmdPost" },
+    sections = sections,
+  },
+  loclist = {
+    events = { "BufEnter" },
+    sections = sections,
+  },
+}
+
+local severities = {
+  E = vim.diagnostic.severity.ERROR,
+  W = vim.diagnostic.severity.WARN,
+  I = vim.diagnostic.severity.INFO,
+  H = vim.diagnostic.severity.HINT,
+  N = vim.diagnostic.severity.HINT,
+}
+
+M.get = {
+  qflist = function(cb)
+    cb(M.get_list())
+  end,
+  loclist = function(cb)
+    cb(M.get_list({ win = vim.api.nvim_get_current_win() }))
+  end,
+}
+
+---@param opts? {win:number}
+function M.get_list(opts)
+  opts = opts or {}
+  local list = opts.win == nil and vim.fn.getqflist({ all = true }) or vim.fn.getloclist(opts.win, { all = true })
+  ---@cast list {items?:qf.item[]}?
+
+  local ret = {} ---@type trouble.Item[]
+  for _, item in pairs(list and list.items or {}) do
+    local row = item.lnum or 1
+    local col = math.max(0, (item.col or 1) - 1)
+    local end_row = item.end_lnum or row
+    local end_col = math.max(0, (item.end_col or col) - 1)
+
+    if item.valid == 1 then
+      ret[#ret + 1] = Item.new({
+        pos = { row, col },
+        end_pos = { end_row, end_col },
+        text = item.text,
+        severity = severities[item.type] or 0,
+        buf = item.bufnr,
+        filename = item.filename,
+        item = item,
+        source = "qf",
+      })
+    elseif #ret > 0 and ret[#ret].item.text and item.text then
+      ret[#ret].item.text = ret[#ret].item.text .. "\n" .. item.text
+    end
+  end
+  Item.add_text(ret)
+  return ret
+end
+
+return M