simplified clangd setup

This commit is contained in:
dlond 2025-05-30 02:57:52 +12:00
parent c77e2e0a99
commit 75add61c7f
1 changed files with 75 additions and 77 deletions

View File

@ -1,19 +1,14 @@
local M = {} local M = {}
M.clang_filetypes = { 'c', 'cpp', 'objc', 'objcpp', 'cuda' } M.clang_filetypes = { 'c', 'cpp', 'objc', 'objcpp', 'cuda' }
local lspconfig = require 'lspconfig' local lspconfig = require 'lspconfig'
local watcher
local function find_compile_commands() local function find_compile_commands()
local lines = vim.fn.systemlist { 'fd', '-u', '-t', 'f', 'compile_commands.json' } local results = vim.fn.systemlist { 'fd', '-u', '-t', 'f', 'compile_commands.json' }
if vim.tbl_isempty(lines) then table.sort(results, function(a, b)
return nil
end
table.sort(lines, function(a, b)
return a:match 'debug' and not b:match 'debug' return a:match 'debug' and not b:match 'debug'
end) end)
return vim.fn.fnamemodify(lines[1], ':h') return results[1] and vim.fn.fnamemodify(results[1], ':h') or nil
end end
function M.stop_clangd() function M.stop_clangd()
@ -25,31 +20,39 @@ function M.stop_clangd()
end end
end end
function M.setup_clangd(commands_dir) function M.start_clangd(commands_dir)
vim.notify('[clangd] Setting up with: ' .. commands_dir)
M.stop_clangd() M.stop_clangd()
local cmd = {
'clangd',
'--background-index',
'--clang-tidy',
'--header-insertion=never',
'--query-driver=' .. vim.fn.exepath 'clang++',
'--resource-dir=' .. vim.fn.systemlist({ 'clang++', '--print-resource-dir' })[1],
}
if commands_dir then
table.insert(cmd, '--compile_commands-dir=' .. commands_dir)
end
lspconfig.clangd.setup { lspconfig.clangd.setup {
cmd = { cmd = cmd,
'clangd',
'--background-index',
'--clang-tidy',
'--header-insertion=never',
'--query-driver=' .. vim.fn.exepath 'clang++',
'--resource-dir=' .. vim.fn.systemlist({ 'clang++', '--print-resource-dir' })[1],
'--compile-commands-dir=' .. (commands_dir or '.'),
},
root_dir = lspconfig.util.root_pattern '.git', root_dir = lspconfig.util.root_pattern '.git',
single_file_support = true, -- single_file_support = true,
capabilities = require('blink.cmp').get_lsp_capabilities(), capabilities = require('blink.cmp').get_lsp_capabilities(),
} }
-- for _, bufnr in ipairs(vim.api.nvim_list_bufs()) do vim.defer_fn(function()
-- local ft = vim.api.nvim_get_option_value('filetype', { buf = bufnr }) for _, bufnr in ipairs(vim.api.nvim_list_bufs()) do
-- if vim.tbl_contains(M.clang_filetypes, ft) then local ft = vim.api.nvim_get_option_value('filetype', { buf = bufnr })
-- vim.lsp.buf_attach_client(bufnr, vim.lsp.get_clients({ name = 'clangd' })[1].id) if vim.tbl_contains(M.clang_filetypes, ft) then
-- end local client = vim.lsp.get_clients({ name = 'clangd' })[1]
-- end if client then
vim.lsp.buf_attach_client(bufnr, client.id)
end
end
end
end, 100)
end end
function M.pick_commands_dir() function M.pick_commands_dir()
@ -58,16 +61,16 @@ function M.pick_commands_dir()
local conf = require('telescope.config').values local conf = require('telescope.config').values
pickers pickers
.new({}, { .new({}, {
prompt_title = 'Choose compile_commands.json location', prompt_title = 'Pick compile_commands.json dir',
finder = finders.new_oneshot_job { 'fd', '-u', 'compile_commands.json', '-x', 'dirname', '{}' }, finder = finders.new_oneshot_job { 'fd', '-u', 'compile_commands.json', '-x', 'dirname', '{}' },
sorter = conf.generic_sorter {}, sorter = conf.generic_sorter {},
attach_mappings = function(_, map) attach_mappings = function(_, map)
map('i', '<CR>', function(prompt_bufnr) map('i', '<CR>', function(prompt_bufnr)
local entry = require('telescope.actions.state').get_selected_entry() local entry = require('telescope.actions.state').get_selected_entry()
local commands_dir = entry[1] local dir = entry[1]
require('telescope.actions').close(prompt_bufnr) require('telescope.actions').close(prompt_bufnr)
if commands_dir ~= '' then if dir then
M.setup_clangd(commands_dir) M.start_clangd(dir)
end end
end) end)
return true return true
@ -76,58 +79,53 @@ function M.pick_commands_dir()
:find() :find()
end end
function M.watch_compile_commands() -- function M.watch_compile_commands()
vim.notify('clangd: Starting watcher for compile_commands.json', vim.log.levels.INFO) -- vim.notify('clangd: Starting watcher for compile_commands.json', vim.log.levels.INFO)
local uv = vim.uv or vim.loop -- local uv = vim.uv or vim.loop
local check_interval = 1000 -- ms -- local check_interval = 1000 -- ms
--
local function try_attach() -- local function try_attach()
local dir = find_compile_commands() -- local dir = find_compile_commands()
if dir then -- if dir then
vim.notify('[clangd] Found compile_commands at: ' .. dir) -- vim.notify('[clangd] Found compile_commands at: ' .. dir)
M.setup_clangd(dir) -- M.setup_clangd(dir)
return true -- return true
end -- end
return false -- return false
end -- end
--
local timer = uv.new_timer() -- local timer = uv.new_timer()
timer:start(0, check_interval, function() -- timer:start(0, check_interval, function()
if try_attach() then -- if try_attach() then
timer:stop() -- timer:stop()
timer:close() -- timer:close()
end -- end
end) -- end)
--
local fs_watcher = uv.new_fs_event() -- local fs_watcher = uv.new_fs_event()
fs_watcher:start(vim.fn.getcwd(), { recursive = true }, function(_, fname, status) -- fs_watcher:start(vim.fn.getcwd(), { recursive = true }, function(_, fname, status)
if fname and fname:match 'compile_commands%.json$' and status.change then -- if fname and fname:match 'compile_commands%.json$' and status.change then
fs_watcher:stop() -- fs_watcher:stop()
vim.schedule(function() -- vim.schedule(function()
vim.notify '[clangd] Detected compile_commands.json change, reloading ...' -- vim.notify '[clangd] Detected compile_commands.json change, reloading ...'
M.setup_clangd(vim.fn.fnamemodify(fname, ':h')) -- M.setup_clangd(vim.fn.fnamemodify(fname, ':h'))
end) -- end)
end -- end
end) -- end)
end -- end
return { return {
'neovim/nvim-lspconfig', 'neovim/nvim-lspconfig',
ft = M.clang_filetypes, ft = M.clang_filetypes,
config = function() config = function()
vim.api.nvim_create_autocmd('FileType', { local dir = find_compile_commands()
pattern = M.clang_filetypes, if dir then
callback = function() vim.notify('[clangd] Starting with compile_commands from: ' .. dir)
local dir = find_compile_commands() M.start_clangd(dir)
if dir then else
vim.notify('[clangd] Found compile_commands at: ' .. dir) vim.notify '[clangd] No compile_commands found. Using fallback config.\nUse <leader>cc to manually set location.'
M.setup_clangd(dir) M.start_clangd(nil)
else end
vim.notify '[clangd] No compile_commands found, watching ...'
M.watch_compile_commands()
end
end,
})
vim.keymap.set('n', '<leader>cc', M.pick_commands_dir, { desc = 'Pick location of compile_commands.json for clangd' }) vim.keymap.set('n', '<leader>cc', M.pick_commands_dir, { desc = 'Pick location of compile_commands.json for clangd' })
end, end,