neovim/runtime/lua/vim/lsp.lua
Lewis Russell 3f1d09bc94 feat(lsp): add vim.lsp.config and vim.lsp.enable
Design goals/requirements:
- Default configuration of a server can be distributed across multiple sources.
  - And via RTP discovery.
- Default configuration can be specified for all servers.
- Configuration _can_ be project specific.

Solution:

- Two new API's:
  - `vim.lsp.config(name, cfg)`:
    - Used to define default configurations for servers of name.
    - Can be used like a table or called as a function.
    - Use `vim.lsp.confg('*', cfg)` to specify default config for all
      servers.
  - `vim.lsp.enable(name)`
    - Used to enable servers of name. Uses configuration defined
    via `vim.lsp.config()`.
2024-12-10 17:16:01 +00:00

1537 lines
50 KiB
Lua

local api = vim.api
local validate = vim.validate
local lsp = vim._defer_require('vim.lsp', {
_changetracking = ..., --- @module 'vim.lsp._changetracking'
_folding_range = ..., --- @module 'vim.lsp._folding_range'
_snippet_grammar = ..., --- @module 'vim.lsp._snippet_grammar'
_tagfunc = ..., --- @module 'vim.lsp._tagfunc'
_watchfiles = ..., --- @module 'vim.lsp._watchfiles'
buf = ..., --- @module 'vim.lsp.buf'
client = ..., --- @module 'vim.lsp.client'
codelens = ..., --- @module 'vim.lsp.codelens'
completion = ..., --- @module 'vim.lsp.completion'
diagnostic = ..., --- @module 'vim.lsp.diagnostic'
handlers = ..., --- @module 'vim.lsp.handlers'
inlay_hint = ..., --- @module 'vim.lsp.inlay_hint'
log = ..., --- @module 'vim.lsp.log'
protocol = ..., --- @module 'vim.lsp.protocol'
rpc = ..., --- @module 'vim.lsp.rpc'
semantic_tokens = ..., --- @module 'vim.lsp.semantic_tokens'
util = ..., --- @module 'vim.lsp.util'
})
local log = lsp.log
local protocol = lsp.protocol
local ms = protocol.Methods
local util = lsp.util
local changetracking = lsp._changetracking
-- Export these directly from rpc.
---@nodoc
lsp.rpc_response_error = lsp.rpc.rpc_response_error
lsp._resolve_to_request = {
[ms.codeAction_resolve] = ms.textDocument_codeAction,
[ms.codeLens_resolve] = ms.textDocument_codeLens,
[ms.documentLink_resolve] = ms.textDocument_documentLink,
[ms.inlayHint_resolve] = ms.textDocument_inlayHint,
}
-- maps request name to the required server_capability in the client.
lsp._request_name_to_capability = {
[ms.callHierarchy_incomingCalls] = { 'callHierarchyProvider' },
[ms.callHierarchy_outgoingCalls] = { 'callHierarchyProvider' },
[ms.codeAction_resolve] = { 'codeActionProvider', 'resolveProvider' },
[ms.codeLens_resolve] = { 'codeLensProvider', 'resolveProvider' },
[ms.documentLink_resolve] = { 'documentLinkProvider', 'resolveProvider' },
[ms.inlayHint_resolve] = { 'inlayHintProvider', 'resolveProvider' },
[ms.textDocument_codeAction] = { 'codeActionProvider' },
[ms.textDocument_codeLens] = { 'codeLensProvider' },
[ms.textDocument_completion] = { 'completionProvider' },
[ms.textDocument_declaration] = { 'declarationProvider' },
[ms.textDocument_definition] = { 'definitionProvider' },
[ms.textDocument_diagnostic] = { 'diagnosticProvider' },
[ms.textDocument_didClose] = { 'textDocumentSync', 'openClose' },
[ms.textDocument_didOpen] = { 'textDocumentSync', 'openClose' },
[ms.textDocument_documentColor] = { 'colorProvider' },
[ms.textDocument_documentHighlight] = { 'documentHighlightProvider' },
[ms.textDocument_documentLink] = { 'documentLinkProvider' },
[ms.textDocument_documentSymbol] = { 'documentSymbolProvider' },
[ms.textDocument_foldingRange] = { 'foldingRangeProvider' },
[ms.textDocument_formatting] = { 'documentFormattingProvider' },
[ms.textDocument_hover] = { 'hoverProvider' },
[ms.textDocument_implementation] = { 'implementationProvider' },
[ms.textDocument_inlayHint] = { 'inlayHintProvider' },
[ms.textDocument_inlineValue] = { 'inlineValueProvider' },
[ms.textDocument_linkedEditingRange] = { 'linkedEditingRangeProvider' },
[ms.textDocument_moniker] = { 'monikerProvider' },
[ms.textDocument_onTypeFormatting] = { 'documentOnTypeFormattingProvider' },
[ms.textDocument_prepareCallHierarchy] = { 'callHierarchyProvider' },
[ms.textDocument_prepareRename] = { 'renameProvider', 'prepareProvider' },
[ms.textDocument_prepareTypeHierarchy] = { 'typeHierarchyProvider' },
[ms.textDocument_rangeFormatting] = { 'documentRangeFormattingProvider' },
[ms.textDocument_rangesFormatting] = { 'documentRangeFormattingProvider', 'rangesSupport' },
[ms.textDocument_references] = { 'referencesProvider' },
[ms.textDocument_rename] = { 'renameProvider' },
[ms.textDocument_selectionRange] = { 'selectionRangeProvider' },
[ms.textDocument_semanticTokens_full] = { 'semanticTokensProvider' },
[ms.textDocument_semanticTokens_full_delta] = { 'semanticTokensProvider' },
[ms.textDocument_signatureHelp] = { 'signatureHelpProvider' },
[ms.textDocument_typeDefinition] = { 'typeDefinitionProvider' },
[ms.textDocument_willSaveWaitUntil] = { 'textDocumentSync', 'willSaveWaitUntil' },
[ms.textDocument_willSave] = { 'textDocumentSync', 'willSave' },
[ms.typeHierarchy_subtypes] = { 'typeHierarchyProvider' },
[ms.typeHierarchy_supertypes] = { 'typeHierarchyProvider' },
[ms.workspace_executeCommand] = { 'executeCommandProvider' },
[ms.workspace_symbol] = { 'workspaceSymbolProvider' },
}
-- TODO improve handling of scratch buffers with LSP attached.
---@private
--- Called by the client when trying to call a method that's not
--- supported in any of the servers registered for the current buffer.
---@param method (string) name of the method
function lsp._unsupported_method(method)
local msg = string.format(
'method %s is not supported by any of the servers registered for the current buffer',
method
)
log.warn(msg)
return msg
end
---@private
---@param workspace_folders string|lsp.WorkspaceFolder[]?
---@return lsp.WorkspaceFolder[]?
function lsp._get_workspace_folders(workspace_folders)
if type(workspace_folders) == 'table' then
return workspace_folders
elseif type(workspace_folders) == 'string' then
return {
{
uri = vim.uri_from_fname(workspace_folders),
name = workspace_folders,
},
}
end
end
local wait_result_reason = { [-1] = 'timeout', [-2] = 'interrupted', [-3] = 'error' }
local format_line_ending = {
['unix'] = '\n',
['dos'] = '\r\n',
['mac'] = '\r',
}
---@private
---@param bufnr (number)
---@return string
function lsp._buf_get_line_ending(bufnr)
return format_line_ending[vim.bo[bufnr].fileformat] or '\n'
end
-- Tracks all clients created via lsp.start_client
local all_clients = {} --- @type table<integer,vim.lsp.Client>
local client_errors_base = table.maxn(lsp.rpc.client_errors)
local client_errors_offset = 0
local function client_error(name)
client_errors_offset = client_errors_offset + 1
local index = client_errors_base + client_errors_offset
return { [name] = index, [index] = name }
end
--- Error codes to be used with `on_error` from |vim.lsp.start_client|.
--- Can be used to look up the string from a the number or the number
--- from the string.
--- @nodoc
lsp.client_errors = vim.tbl_extend(
'error',
lsp.rpc.client_errors,
client_error('BEFORE_INIT_CALLBACK_ERROR'),
client_error('ON_INIT_CALLBACK_ERROR'),
client_error('ON_ATTACH_ERROR'),
client_error('ON_EXIT_CALLBACK_ERROR')
)
---@private
--- Returns full text of buffer {bufnr} as a string.
---
---@param bufnr (number) Buffer handle, or 0 for current.
---@return string # Buffer text as string.
function lsp._buf_get_full_text(bufnr)
local line_ending = lsp._buf_get_line_ending(bufnr)
local text = table.concat(api.nvim_buf_get_lines(bufnr, 0, -1, true), line_ending)
if vim.bo[bufnr].eol then
text = text .. line_ending
end
return text
end
--- Memoizes a function. On first run, the function return value is saved and
--- immediately returned on subsequent runs. If the function returns a multival,
--- only the first returned value will be memoized and returned. The function will only be run once,
--- even if it has side effects.
---
---@generic T: function
---@param fn (T) Function to run
---@return T
local function once(fn)
local value --- @type function
local ran = false
return function(...)
if not ran then
value = fn(...) --- @type function
ran = true
end
return value
end
end
--- @param client vim.lsp.Client
--- @param config vim.lsp.ClientConfig
--- @return boolean
local function reuse_client_default(client, config)
if client.name ~= config.name then
return false
end
local config_folders = lsp._get_workspace_folders(config.workspace_folders or config.root_dir)
or {}
local config_folders_included = 0
if not next(config_folders) then
return false
end
for _, config_folder in ipairs(config_folders) do
for _, client_folder in ipairs(client.workspace_folders) do
if config_folder.uri == client_folder.uri then
config_folders_included = config_folders_included + 1
break
end
end
end
return config_folders_included == #config_folders
end
--- Reset defaults set by `set_defaults`.
--- Must only be called if the last client attached to a buffer exits.
local function reset_defaults(bufnr)
if vim.bo[bufnr].tagfunc == 'v:lua.vim.lsp.tagfunc' then
vim.bo[bufnr].tagfunc = nil
end
if vim.bo[bufnr].omnifunc == 'v:lua.vim.lsp.omnifunc' then
vim.bo[bufnr].omnifunc = nil
end
if vim.bo[bufnr].formatexpr == 'v:lua.vim.lsp.formatexpr()' then
vim.bo[bufnr].formatexpr = nil
end
vim._with({ buf = bufnr }, function()
local keymap = vim.fn.maparg('K', 'n', false, true)
if keymap and keymap.callback == vim.lsp.buf.hover and keymap.buffer == 1 then
vim.keymap.del('n', 'K', { buffer = bufnr })
end
end)
end
--- @param code integer
--- @param signal integer
--- @param client_id integer
local function on_client_exit(code, signal, client_id)
local client = all_clients[client_id]
vim.schedule(function()
for bufnr in pairs(client.attached_buffers) do
if client and client.attached_buffers[bufnr] and api.nvim_buf_is_valid(bufnr) then
api.nvim_exec_autocmds('LspDetach', {
buffer = bufnr,
modeline = false,
data = { client_id = client_id },
})
end
client.attached_buffers[bufnr] = nil
if #lsp.get_clients({ bufnr = bufnr, _uninitialized = true }) == 0 then
reset_defaults(bufnr)
end
end
local namespace = vim.lsp.diagnostic.get_namespace(client_id)
vim.diagnostic.reset(namespace)
end)
local name = client.name or 'unknown'
-- Schedule the deletion of the client object so that it exists in the execution of LspDetach
-- autocommands
vim.schedule(function()
all_clients[client_id] = nil
-- Client can be absent if executable starts, but initialize fails
-- init/attach won't have happened
if client then
changetracking.reset(client)
end
if code ~= 0 or (signal ~= 0 and signal ~= 15) then
local msg = string.format(
'Client %s quit with exit code %s and signal %s. Check log for errors: %s',
name,
code,
signal,
lsp.get_log_path()
)
vim.notify(msg, vim.log.levels.WARN)
end
end)
end
--- Creates and initializes a client with the given configuration.
--- @param config vim.lsp.ClientConfig Configuration for the server.
--- @return integer? client_id |vim.lsp.get_client_by_id()| Note: client may not be
--- fully initialized. Use `on_init` to do any actions once
--- the client has been initialized.
--- @return string? # Error message, if any
local function create_and_initialize_client(config)
local ok, res = pcall(require('vim.lsp.client').create, config)
if not ok then
return nil, res --[[@as string]]
end
local client = assert(res)
--- @diagnostic disable-next-line: invisible
table.insert(client._on_exit_cbs, on_client_exit)
all_clients[client.id] = client
client:initialize()
return client.id, nil
end
--- @class vim.lsp.Config : vim.lsp.ClientConfig
---
--- See `cmd` in [vim.lsp.ClientConfig].
--- @field cmd? string[]|fun(dispatchers: vim.lsp.rpc.Dispatchers): vim.lsp.rpc.PublicClient
---
--- Filetypes the client will attach to, if activated by `vim.lsp.enable()`.
--- If not provided, then the client will attach to all filetypes.
--- @field filetypes? string[]
---
--- Directory markers (.e.g. '.git/') where the LSP server will base its workspaceFolders,
--- rootUri, and rootPath on initialization. Unused if `root_dir` is provided.
--- @field root_markers? string[]
---
--- Predicate used to decide if a client should be re-used. Used on all
--- running clients. The default implementation re-uses a client if name and
--- root_dir matches.
--- @field reuse_client? fun(client: vim.lsp.Client, config: vim.lsp.ClientConfig): boolean
--- Update the configuration for an LSP client.
---
--- Use name '*' to set default configuration for all clients.
---
--- Can also be table-assigned to redefine the configuration for a client.
---
--- Examples:
---
--- - Add a root marker for all clients:
--- ```lua
--- vim.lsp.config('*', {
--- root_markers = { '.git' },
--- })
--- ```
--- - Add additional capabilities to all clients:
--- ```lua
--- vim.lsp.config('*', {
--- capabilities = {
--- textDocument = {
--- semanticTokens = {
--- multilineTokenSupport = true,
--- }
--- }
--- }
--- })
--- ```
--- - (Re-)define the configuration for clangd:
--- ```lua
--- vim.lsp.config.clangd = {
--- cmd = {
--- 'clangd',
--- '--clang-tidy',
--- '--background-index',
--- '--offset-encoding=utf-8',
--- },
--- root_markers = { '.clangd', 'compile_commands.json' },
--- filetypes = { 'c', 'cpp' },
--- }
--- ```
--- - Get configuration for luals:
--- ```lua
--- local cfg = vim.lsp.config.luals
--- ```
---
--- @param name string
--- @param cfg vim.lsp.Config
--- @diagnostic disable-next-line:assign-type-mismatch
function lsp.config(name, cfg)
local _, _ = name, cfg -- ignore unused
-- dummy proto for docs
end
lsp._enabled_configs = {} --- @type table<string,{resolved_config:vim.lsp.Config?}>
--- If a config in vim.lsp.config() is accessed then the resolved config becomes invalid.
--- @param name string
local function invalidate_enabled_config(name)
if name == '*' then
for _, v in pairs(lsp._enabled_configs) do
v.resolved_config = nil
end
elseif lsp._enabled_configs[name] then
lsp._enabled_configs[name].resolved_config = nil
end
end
--- @nodoc
--- @class vim.lsp.config
--- @field [string] vim.lsp.Config
--- @field package _configs table<string,vim.lsp.Config>
lsp.config = setmetatable({ _configs = {} }, {
--- @param self vim.lsp.config
--- @param name string
--- @return vim.lsp.Config
__index = function(self, name)
validate('name', name, 'string')
invalidate_enabled_config(name)
self._configs[name] = self._configs[name] or {}
return self._configs[name]
end,
--- @param self vim.lsp.config
--- @param name string
--- @param cfg vim.lsp.Config
__newindex = function(self, name, cfg)
validate('name', name, 'string')
validate('cfg', cfg, 'table')
invalidate_enabled_config(name)
self._configs[name] = cfg
end,
--- @param self vim.lsp.config
--- @param name string
--- @param cfg vim.lsp.Config
__call = function(self, name, cfg)
validate('name', name, 'string')
validate('cfg', cfg, 'table')
invalidate_enabled_config(name)
self[name] = vim.tbl_deep_extend('force', self._configs[name] or {}, cfg)
end,
})
--- @private
--- @param name string
--- @return vim.lsp.Config
function lsp._resolve_config(name)
local econfig = lsp._enabled_configs[name] or {}
if not econfig.resolved_config then
-- Resolve configs from lsp/*.lua
-- Calls to vim.lsp.config in lsp/* have a lower precedence than calls from other sites.
local orig_configs = lsp.config._configs
lsp.config._configs = {}
pcall(vim.cmd.runtime, { ('lsp/%s.lua'):format(name), bang = true })
local rtp_configs = lsp.config._configs
lsp.config._configs = orig_configs
local config = vim.tbl_deep_extend(
'force',
lsp.config._configs['*'] or {},
rtp_configs[name] or {},
lsp.config._configs[name] or {}
)
config.name = name
validate('cmd', config.cmd, { 'function', 'table' })
validate('cmd', config.reuse_client, 'function', true)
-- All other fields are validated in client.create
econfig.resolved_config = config
end
return assert(econfig.resolved_config)
end
local lsp_enable_autocmd_id --- @type integer?
--- @param bufnr integer
local function lsp_enable_callback(bufnr)
-- Only ever attach to buffers that represent an actual file.
if vim.bo[bufnr].buftype ~= '' then
return
end
--- @param config vim.lsp.Config
local function can_start(config)
if config.filetypes and not vim.tbl_contains(config.filetypes, vim.bo[bufnr].filetype) then
return false
elseif type(config.cmd) == 'table' and vim.fn.executable(config.cmd[1]) == 0 then
return false
end
return true
end
for name in vim.spairs(lsp._enabled_configs) do
local config = lsp._resolve_config(name)
if can_start(config) then
-- Deepcopy config so changes done in the client
-- do not propagate back to the enabled configs.
config = vim.deepcopy(config)
vim.lsp.start(config, {
bufnr = bufnr,
reuse_client = config.reuse_client,
_root_markers = config.root_markers,
})
end
end
end
--- Enable an LSP server to automatically start when opening a buffer.
---
--- Uses configuration defined with `vim.lsp.config`.
---
--- Examples:
---
--- ```lua
--- vim.lsp.enable('clangd')
---
--- vim.lsp.enable({'luals', 'pyright'})
--- ```
---
--- @param name string|string[] Name(s) of client(s) to enable.
--- @param enable? boolean `true|nil` to enable, `false` to disable.
function lsp.enable(name, enable)
validate('name', name, { 'string', 'table' })
local names = vim._ensure_list(name) --[[@as string[] ]]
for _, nm in ipairs(names) do
if nm == '*' then
error('Invalid name')
end
lsp._enabled_configs[nm] = enable == false and nil or {}
end
if not next(lsp._enabled_configs) then
if lsp_enable_autocmd_id then
api.nvim_del_autocmd(lsp_enable_autocmd_id)
lsp_enable_autocmd_id = nil
end
return
end
-- Only ever create autocmd once to reuse computation of config merging.
lsp_enable_autocmd_id = lsp_enable_autocmd_id
or api.nvim_create_autocmd('FileType', {
group = api.nvim_create_augroup('nvim.lsp.enable', {}),
callback = function(args)
lsp_enable_callback(args.buf)
end,
})
end
--- @class vim.lsp.start.Opts
--- @inlinedoc
---
--- Predicate used to decide if a client should be re-used. Used on all
--- running clients. The default implementation re-uses a client if it has the
--- same name and if the given workspace folders (or root_dir) are all included
--- in the client's workspace folders.
--- @field reuse_client? fun(client: vim.lsp.Client, config: vim.lsp.ClientConfig): boolean
---
--- Buffer handle to attach to if starting or re-using a client (0 for current).
--- @field bufnr? integer
---
--- Whether to attach the client to a buffer (default true).
--- If set to `false`, `reuse_client` and `bufnr` will be ignored.
--- @field attach? boolean
---
--- Suppress error reporting if the LSP server fails to start (default false).
--- @field silent? boolean
---
--- @field package _root_markers? string[]
--- Create a new LSP client and start a language server or reuses an already
--- running client if one is found matching `name` and `root_dir`.
--- Attaches the current buffer to the client.
---
--- Example:
---
--- ```lua
--- vim.lsp.start({
--- name = 'my-server-name',
--- cmd = {'name-of-language-server-executable'},
--- root_dir = vim.fs.root(0, {'pyproject.toml', 'setup.py'}),
--- })
--- ```
---
--- See |vim.lsp.ClientConfig| for all available options. The most important are:
---
--- - `name` arbitrary name for the LSP client. Should be unique per language server.
--- - `cmd` command string[] or function.
--- - `root_dir` path to the project root. By default this is used to decide if an existing client
--- should be re-used. The example above uses |vim.fs.root()| to detect the root by traversing
--- the file system upwards starting from the current directory until either a `pyproject.toml`
--- or `setup.py` file is found.
--- - `workspace_folders` list of `{ uri:string, name: string }` tables specifying the project root
--- folders used by the language server. If `nil` the property is derived from `root_dir` for
--- convenience.
---
--- Language servers use this information to discover metadata like the
--- dependencies of your project and they tend to index the contents within the
--- project folder.
---
---
--- To ensure a language server is only started for languages it can handle,
--- make sure to call |vim.lsp.start()| within a |FileType| autocmd.
--- Either use |:au|, |nvim_create_autocmd()| or put the call in a
--- `ftplugin/<filetype_name>.lua` (See |ftplugin-name|)
---
--- @param config vim.lsp.ClientConfig Configuration for the server.
--- @param opts vim.lsp.start.Opts? Optional keyword arguments.
--- @return integer? client_id
function lsp.start(config, opts)
opts = opts or {}
local reuse_client = opts.reuse_client or reuse_client_default
local bufnr = vim._resolve_bufnr(opts.bufnr)
if not config.root_dir and opts._root_markers then
config = vim.deepcopy(config)
config.root_dir = vim.fs.root(bufnr, opts._root_markers)
end
for _, client in pairs(all_clients) do
if reuse_client(client, config) then
if opts.attach == false then
return client.id
end
if lsp.buf_attach_client(bufnr, client.id) then
return client.id
end
return
end
end
local client_id, err = create_and_initialize_client(config)
if err then
if not opts.silent then
vim.notify(err, vim.log.levels.WARN)
end
return
end
if opts.attach == false then
return client_id
end
if client_id and lsp.buf_attach_client(bufnr, client_id) then
return client_id
end
end
--- Consumes the latest progress messages from all clients and formats them as a string.
--- Empty if there are no clients or if no new messages
---
---@return string
function lsp.status()
local percentage = nil
local messages = {} --- @type string[]
for _, client in ipairs(vim.lsp.get_clients()) do
--- @diagnostic disable-next-line:no-unknown
for progress in client.progress do
--- @cast progress {token: lsp.ProgressToken, value: lsp.LSPAny}
local value = progress.value
if type(value) == 'table' and value.kind then
local message = value.message and (value.title .. ': ' .. value.message) or value.title
messages[#messages + 1] = message
if value.percentage then
percentage = math.max(percentage or 0, value.percentage)
end
end
-- else: Doesn't look like work done progress and can be in any format
-- Just ignore it as there is no sensible way to display it
end
end
local message = table.concat(messages, ', ')
if percentage then
return string.format('%3d%%: %s', percentage, message)
end
return message
end
-- Determines whether the given option can be set by `set_defaults`.
---@param bufnr integer
---@param option string
---@return boolean
local function is_empty_or_default(bufnr, option)
if vim.bo[bufnr][option] == '' then
return true
end
local info = api.nvim_get_option_info2(option, { buf = bufnr })
---@param e vim.fn.getscriptinfo.ret
local scriptinfo = vim.tbl_filter(function(e)
return e.sid == info.last_set_sid
end, vim.fn.getscriptinfo())
if #scriptinfo ~= 1 then
return false
end
return vim.startswith(scriptinfo[1].name, vim.fn.expand('$VIMRUNTIME'))
end
---@private
---@param client vim.lsp.Client
---@param bufnr integer
function lsp._set_defaults(client, bufnr)
if
client:supports_method(ms.textDocument_definition) and is_empty_or_default(bufnr, 'tagfunc')
then
vim.bo[bufnr].tagfunc = 'v:lua.vim.lsp.tagfunc'
end
if
client:supports_method(ms.textDocument_completion) and is_empty_or_default(bufnr, 'omnifunc')
then
vim.bo[bufnr].omnifunc = 'v:lua.vim.lsp.omnifunc'
end
if
client:supports_method(ms.textDocument_rangeFormatting)
and is_empty_or_default(bufnr, 'formatprg')
and is_empty_or_default(bufnr, 'formatexpr')
then
vim.bo[bufnr].formatexpr = 'v:lua.vim.lsp.formatexpr()'
end
vim._with({ buf = bufnr }, function()
if
client:supports_method(ms.textDocument_hover)
and is_empty_or_default(bufnr, 'keywordprg')
and vim.fn.maparg('K', 'n', false, false) == ''
then
vim.keymap.set('n', 'K', function()
vim.lsp.buf.hover()
end, { buffer = bufnr, desc = 'vim.lsp.buf.hover()' })
end
end)
if client:supports_method(ms.textDocument_diagnostic) then
lsp.diagnostic._enable(bufnr)
end
end
--- @deprecated
--- Starts and initializes a client with the given configuration.
--- @param config vim.lsp.ClientConfig Configuration for the server.
--- @return integer? client_id |vim.lsp.get_client_by_id()| Note: client may not be
--- fully initialized. Use `on_init` to do any actions once
--- the client has been initialized.
--- @return string? # Error message, if any
function lsp.start_client(config)
vim.deprecate('vim.lsp.start_client()', 'vim.lsp.start()', '0.13')
return create_and_initialize_client(config)
end
---Buffer lifecycle handler for textDocument/didSave
--- @param bufnr integer
local function text_document_did_save_handler(bufnr)
bufnr = vim._resolve_bufnr(bufnr)
local uri = vim.uri_from_bufnr(bufnr)
local text = once(lsp._buf_get_full_text)
for _, client in ipairs(lsp.get_clients({ bufnr = bufnr })) do
local name = api.nvim_buf_get_name(bufnr)
local old_name = changetracking._get_and_set_name(client, bufnr, name)
if old_name and name ~= old_name then
client:notify(ms.textDocument_didClose, {
textDocument = {
uri = vim.uri_from_fname(old_name),
},
})
client:notify(ms.textDocument_didOpen, {
textDocument = {
version = 0,
uri = uri,
languageId = client.get_language_id(bufnr, vim.bo[bufnr].filetype),
text = lsp._buf_get_full_text(bufnr),
},
})
util.buf_versions[bufnr] = 0
end
local save_capability = vim.tbl_get(client.server_capabilities, 'textDocumentSync', 'save')
if save_capability then
local included_text --- @type string?
if type(save_capability) == 'table' and save_capability.includeText then
included_text = text(bufnr)
end
client:notify(ms.textDocument_didSave, {
textDocument = {
uri = uri,
},
text = included_text,
})
end
end
end
---@param bufnr integer resolved buffer
---@param client vim.lsp.Client
local function buf_detach_client(bufnr, client)
api.nvim_exec_autocmds('LspDetach', {
buffer = bufnr,
modeline = false,
data = { client_id = client.id },
})
changetracking.reset_buf(client, bufnr)
if client:supports_method(ms.textDocument_didClose) then
local uri = vim.uri_from_bufnr(bufnr)
local params = { textDocument = { uri = uri } }
client:notify(ms.textDocument_didClose, params)
end
client.attached_buffers[bufnr] = nil
local namespace = lsp.diagnostic.get_namespace(client.id)
vim.diagnostic.reset(namespace, bufnr)
end
--- @type table<integer,true>
local attached_buffers = {}
--- @param bufnr integer
local function buf_attach(bufnr)
if attached_buffers[bufnr] then
return
end
attached_buffers[bufnr] = true
local uri = vim.uri_from_bufnr(bufnr)
local augroup = ('lsp_b_%d_save'):format(bufnr)
local group = api.nvim_create_augroup(augroup, { clear = true })
api.nvim_create_autocmd('BufWritePre', {
group = group,
buffer = bufnr,
desc = 'vim.lsp: textDocument/willSave',
callback = function(ctx)
for _, client in ipairs(lsp.get_clients({ bufnr = ctx.buf })) do
local params = {
textDocument = {
uri = uri,
},
reason = protocol.TextDocumentSaveReason.Manual, ---@type integer
}
if client:supports_method(ms.textDocument_willSave) then
client:notify(ms.textDocument_willSave, params)
end
if client:supports_method(ms.textDocument_willSaveWaitUntil) then
local result, err =
client:request_sync(ms.textDocument_willSaveWaitUntil, params, 1000, ctx.buf)
if result and result.result then
util.apply_text_edits(result.result, ctx.buf, client.offset_encoding)
elseif err then
log.error(vim.inspect(err))
end
end
end
end,
})
api.nvim_create_autocmd('BufWritePost', {
group = group,
buffer = bufnr,
desc = 'vim.lsp: textDocument/didSave handler',
callback = function(ctx)
text_document_did_save_handler(ctx.buf)
end,
})
-- First time, so attach and set up stuff.
api.nvim_buf_attach(bufnr, false, {
on_lines = function(_, _, changedtick, firstline, lastline, new_lastline)
if #lsp.get_clients({ bufnr = bufnr }) == 0 then
-- detach if there are no clients
return #lsp.get_clients({ bufnr = bufnr, _uninitialized = true }) == 0
end
util.buf_versions[bufnr] = changedtick
changetracking.send_changes(bufnr, firstline, lastline, new_lastline)
end,
on_reload = function()
local clients = lsp.get_clients({ bufnr = bufnr })
local params = { textDocument = { uri = uri } }
for _, client in ipairs(clients) do
changetracking.reset_buf(client, bufnr)
if client:supports_method(ms.textDocument_didClose) then
client:notify(ms.textDocument_didClose, params)
end
end
for _, client in ipairs(clients) do
client:_text_document_did_open_handler(bufnr)
end
end,
on_detach = function()
local clients = lsp.get_clients({ bufnr = bufnr, _uninitialized = true })
for _, client in ipairs(clients) do
buf_detach_client(bufnr, client)
end
attached_buffers[bufnr] = nil
util.buf_versions[bufnr] = nil
end,
-- TODO if we know all of the potential clients ahead of time, then we
-- could conditionally set this.
-- utf_sizes = size_index > 1;
utf_sizes = true,
})
end
--- Implements the `textDocument/did…` notifications required to track a buffer
--- for any language server.
---
--- Without calling this, the server won't be notified of changes to a buffer.
---
---@param bufnr (integer) Buffer handle, or 0 for current
---@param client_id (integer) Client id
---@return boolean success `true` if client was attached successfully; `false` otherwise
function lsp.buf_attach_client(bufnr, client_id)
validate('bufnr', bufnr, 'number', true)
validate('client_id', client_id, 'number')
bufnr = vim._resolve_bufnr(bufnr)
if not api.nvim_buf_is_loaded(bufnr) then
log.warn(string.format('buf_attach_client called on unloaded buffer (id: %d): ', bufnr))
return false
end
local client = lsp.get_client_by_id(client_id)
if not client then
return false
end
buf_attach(bufnr)
if client.attached_buffers[bufnr] then
return true
end
client.attached_buffers[bufnr] = true
-- This is our first time attaching this client to this buffer.
-- Send didOpen for the client if it is initialized. If it isn't initialized
-- then it will send didOpen on initialize.
if client.initialized then
client:on_attach(bufnr)
end
return true
end
--- Detaches client from the specified buffer.
--- Note: While the server is notified that the text document (buffer)
--- was closed, it is still able to send notifications should it ignore this notification.
---
---@param bufnr integer Buffer handle, or 0 for current
---@param client_id integer Client id
function lsp.buf_detach_client(bufnr, client_id)
validate('bufnr', bufnr, 'number', true)
validate('client_id', client_id, 'number')
bufnr = vim._resolve_bufnr(bufnr)
local client = all_clients[client_id]
if not client or not client.attached_buffers[bufnr] then
vim.notify(
string.format(
'Buffer (id: %d) is not attached to client (id: %d). Cannot detach.',
bufnr,
client_id
)
)
return
else
buf_detach_client(bufnr, client)
end
end
--- Checks if a buffer is attached for a particular client.
---
---@param bufnr (integer) Buffer handle, or 0 for current
---@param client_id (integer) the client id
function lsp.buf_is_attached(bufnr, client_id)
return lsp.get_clients({ bufnr = bufnr, id = client_id, _uninitialized = true })[1] ~= nil
end
--- Gets a client by id, or nil if the id is invalid.
--- The returned client may not yet be fully initialized.
---
---@param client_id integer client id
---
---@return (nil|vim.lsp.Client) client rpc object
function lsp.get_client_by_id(client_id)
return all_clients[client_id]
end
--- Returns list of buffers attached to client_id.
---
---@param client_id integer client id
---@return integer[] buffers list of buffer ids
function lsp.get_buffers_by_client_id(client_id)
local client = all_clients[client_id]
return client and vim.tbl_keys(client.attached_buffers) or {}
end
--- Stops a client(s).
---
--- You can also use the `stop()` function on a |vim.lsp.Client| object.
--- To stop all clients:
---
--- ```lua
--- vim.lsp.stop_client(vim.lsp.get_clients())
--- ```
---
--- By default asks the server to shutdown, unless stop was requested
--- already for this client, then force-shutdown is attempted.
---
---@param client_id integer|integer[]|vim.lsp.Client[] id, list of id's, or list of |vim.lsp.Client| objects
---@param force? boolean shutdown forcefully
function lsp.stop_client(client_id, force)
--- @type integer[]|vim.lsp.Client[]
local ids = type(client_id) == 'table' and client_id or { client_id }
for _, id in ipairs(ids) do
if type(id) == 'table' then
if id.stop then
id:stop(force)
end
else
--- @cast id -vim.lsp.Client
local client = all_clients[id]
if client then
client:stop(force)
end
end
end
end
--- Key-value pairs used to filter the returned clients.
--- @class vim.lsp.get_clients.Filter
--- @inlinedoc
---
--- Only return clients with the given id
--- @field id? integer
---
--- Only return clients attached to this buffer
--- @field bufnr? integer
---
--- Only return clients with the given name
--- @field name? string
---
--- Only return clients supporting the given method
--- @field method? string
---
--- Also return uninitialized clients.
--- @field package _uninitialized? boolean
--- Get active clients.
---
---@param filter? vim.lsp.get_clients.Filter
---@return vim.lsp.Client[]: List of |vim.lsp.Client| objects
function lsp.get_clients(filter)
validate('filter', filter, 'table', true)
filter = filter or {}
local clients = {} --- @type vim.lsp.Client[]
local bufnr = filter.bufnr and vim._resolve_bufnr(filter.bufnr)
for _, client in pairs(all_clients) do
if
client
and (filter.id == nil or client.id == filter.id)
and (filter.bufnr == nil or client.attached_buffers[bufnr])
and (filter.name == nil or client.name == filter.name)
and (filter.method == nil or client:supports_method(filter.method, filter.bufnr))
and (filter._uninitialized or client.initialized)
then
clients[#clients + 1] = client
end
end
return clients
end
---@private
---@deprecated
function lsp.get_active_clients(filter)
vim.deprecate('vim.lsp.get_active_clients()', 'vim.lsp.get_clients()', '0.12')
return lsp.get_clients(filter)
end
api.nvim_create_autocmd('VimLeavePre', {
desc = 'vim.lsp: exit handler',
callback = function()
local active_clients = lsp.get_clients()
log.info('exit_handler', active_clients)
for _, client in pairs(all_clients) do
client:stop()
end
local timeouts = {} --- @type table<integer,integer>
local max_timeout = 0
local send_kill = false
for client_id, client in pairs(active_clients) do
local timeout = client.flags.exit_timeout
if timeout then
send_kill = true
timeouts[client_id] = timeout
max_timeout = math.max(timeout, max_timeout)
end
end
local poll_time = 50
local function check_clients_closed()
for client_id, timeout in pairs(timeouts) do
timeouts[client_id] = timeout - poll_time
end
for client_id, _ in pairs(active_clients) do
if timeouts[client_id] ~= nil and timeouts[client_id] > 0 then
return false
end
end
return true
end
if send_kill then
if not vim.wait(max_timeout, check_clients_closed, poll_time) then
for client_id, client in pairs(active_clients) do
if timeouts[client_id] ~= nil then
client:stop(true)
end
end
end
end
end,
})
---@private
--- Sends an async request for all active clients attached to the
--- buffer.
---
---@param bufnr (integer) Buffer handle, or 0 for current.
---@param method (string) LSP method name
---@param params? table|(fun(client: vim.lsp.Client, bufnr: integer): table?) Parameters to send to the server
---@param handler? lsp.Handler See |lsp-handler|
--- If nil, follows resolution strategy defined in |lsp-handler-configuration|
---@param on_unsupported? fun()
--- The function to call when the buffer has no clients that support the given method.
--- Defaults to an `ERROR` level notification.
---@return table<integer, integer> client_request_ids Map of client-id:request-id pairs
---for all successful requests.
---@return function _cancel_all_requests Function which can be used to
---cancel all the requests. You could instead
---iterate all clients and call their `cancel_request()` methods.
function lsp.buf_request(bufnr, method, params, handler, on_unsupported)
validate('bufnr', bufnr, 'number', true)
validate('method', method, 'string')
validate('handler', handler, 'function', true)
validate('on_unsupported', on_unsupported, 'function', true)
bufnr = vim._resolve_bufnr(bufnr)
local method_supported = false
local clients = lsp.get_clients({ bufnr = bufnr })
local client_request_ids = {} --- @type table<integer,integer>
for _, client in ipairs(clients) do
if client:supports_method(method, bufnr) then
method_supported = true
local cparams = type(params) == 'function' and params(client, bufnr) or params --[[@as table?]]
local request_success, request_id = client:request(method, cparams, handler, bufnr)
-- This could only fail if the client shut down in the time since we looked
-- it up and we did the request, which should be rare.
if request_success then
client_request_ids[client.id] = request_id
end
end
end
-- if has client but no clients support the given method, notify the user
if next(clients) and not method_supported then
if on_unsupported == nil then
vim.notify(lsp._unsupported_method(method), vim.log.levels.ERROR)
else
on_unsupported()
end
vim.cmd.redraw()
return {}, function() end
end
local function _cancel_all_requests()
for client_id, request_id in pairs(client_request_ids) do
local client = all_clients[client_id]
client:cancel_request(request_id)
end
end
return client_request_ids, _cancel_all_requests
end
--- Sends an async request for all active clients attached to the buffer and executes the `handler`
--- callback with the combined result.
---
---@param bufnr (integer) Buffer handle, or 0 for current.
---@param method (string) LSP method name
---@param params? table|(fun(client: vim.lsp.Client, bufnr: integer): table?) Parameters to send to the server.
--- Can also be passed as a function that returns the params table for cases where
--- parameters are specific to the client.
---@param handler lsp.MultiHandler (function)
--- Handler called after all requests are completed. Server results are passed as
--- a `client_id:result` map.
---@return function cancel Function that cancels all requests.
function lsp.buf_request_all(bufnr, method, params, handler)
local results = {} --- @type table<integer,{err: lsp.ResponseError?, result: any}>
local remaining --- @type integer?
local _, cancel = lsp.buf_request(bufnr, method, params, function(err, result, ctx, config)
if not remaining then
-- Calculate as late as possible in case a client is removed during the request
remaining = #lsp.get_clients({ bufnr = bufnr, method = method })
end
-- The error key is deprecated and will be removed in 0.13
results[ctx.client_id] = { err = err, error = err, result = result }
remaining = remaining - 1
if remaining == 0 then
handler(results, ctx, config)
end
end)
return cancel
end
--- Sends a request to all server and waits for the response of all of them.
---
--- Calls |vim.lsp.buf_request_all()| but blocks Nvim while awaiting the result.
--- Parameters are the same as |vim.lsp.buf_request_all()| but the result is
--- different. Waits a maximum of {timeout_ms}.
---
---@param bufnr integer Buffer handle, or 0 for current.
---@param method string LSP method name
---@param params table? Parameters to send to the server
---@param timeout_ms integer? Maximum time in milliseconds to wait for a result.
--- (default: `1000`)
---@return table<integer, {error: lsp.ResponseError?, result: any}>? result Map of client_id:request_result.
---@return string? err On timeout, cancel, or error, `err` is a string describing the failure reason, and `result` is nil.
function lsp.buf_request_sync(bufnr, method, params, timeout_ms)
local request_results ---@type table
local cancel = lsp.buf_request_all(bufnr, method, params, function(it)
request_results = it
end)
local wait_result, reason = vim.wait(timeout_ms or 1000, function()
return request_results ~= nil
end, 10)
if not wait_result then
cancel()
return nil, wait_result_reason[reason]
end
return request_results
end
--- Send a notification to a server
---@param bufnr (integer|nil) The number of the buffer
---@param method (string) Name of the request method
---@param params (any) Arguments to send to the server
---
---@return boolean success true if any client returns true; false otherwise
function lsp.buf_notify(bufnr, method, params)
validate('bufnr', bufnr, 'number', true)
validate('method', method, 'string')
local resp = false
for _, client in ipairs(lsp.get_clients({ bufnr = bufnr })) do
if client.rpc.notify(method, params) then
resp = true
end
end
return resp
end
--- Implements 'omnifunc' compatible LSP completion.
---
---@see |complete-functions|
---@see |complete-items|
---@see |CompleteDone|
---
---@param findstart integer 0 or 1, decides behavior
---@param base integer findstart=0, text to match against
---
---@return integer|table Decided by {findstart}:
--- - findstart=0: column where the completion starts, or -2 or -3
--- - findstart=1: list of matches (actually just calls |complete()|)
function lsp.omnifunc(findstart, base)
return vim.lsp.completion._omnifunc(findstart, base)
end
--- @class vim.lsp.formatexpr.Opts
--- @inlinedoc
---
--- The timeout period for the formatting request.
--- (default: 500ms).
--- @field timeout_ms integer
--- Provides an interface between the built-in client and a `formatexpr` function.
---
--- Currently only supports a single client. This can be set via
--- `setlocal formatexpr=v:lua.vim.lsp.formatexpr()` or (more typically) in `on_attach`
--- via `vim.bo[bufnr].formatexpr = 'v:lua.vim.lsp.formatexpr(#{timeout_ms:250})'`.
---
---@param opts? vim.lsp.formatexpr.Opts
function lsp.formatexpr(opts)
opts = opts or {}
local timeout_ms = opts.timeout_ms or 500
if vim.list_contains({ 'i', 'R', 'ic', 'ix' }, vim.fn.mode()) then
-- `formatexpr` is also called when exceeding `textwidth` in insert mode
-- fall back to internal formatting
return 1
end
local start_lnum = vim.v.lnum
local end_lnum = start_lnum + vim.v.count - 1
if start_lnum <= 0 or end_lnum <= 0 then
return 0
end
local bufnr = api.nvim_get_current_buf()
for _, client in pairs(lsp.get_clients({ bufnr = bufnr })) do
if client:supports_method(ms.textDocument_rangeFormatting) then
local params = util.make_formatting_params()
local end_line = vim.fn.getline(end_lnum) --[[@as string]]
local end_col = vim.str_utfindex(end_line, client.offset_encoding)
--- @cast params +lsp.DocumentRangeFormattingParams
params.range = {
start = {
line = start_lnum - 1,
character = 0,
},
['end'] = {
line = end_lnum - 1,
character = end_col,
},
}
local response =
client:request_sync(ms.textDocument_rangeFormatting, params, timeout_ms, bufnr)
if response and response.result then
lsp.util.apply_text_edits(response.result, bufnr, client.offset_encoding)
return 0
end
end
end
-- do not run builtin formatter.
return 0
end
--- Provides an interface between the built-in client and 'tagfunc'.
---
--- When used with normal mode commands (e.g. |CTRL-]|) this will invoke
--- the "textDocument/definition" LSP method to find the tag under the cursor.
--- Otherwise, uses "workspace/symbol". If no results are returned from
--- any LSP servers, falls back to using built-in tags.
---
---@param pattern string Pattern used to find a workspace symbol
---@param flags string See |tag-function|
---
---@return table[] tags A list of matching tags
function lsp.tagfunc(pattern, flags)
return vim.lsp._tagfunc(pattern, flags)
end
--- Provides an interface between the built-in client and a `foldexpr` function.
---
--- To use, check for the "textDocument/foldingRange" capability in an
--- |LspAttach| autocommand. Example:
---
--- ```lua
--- vim.api.nvim_create_autocommand('LspAttach', {
--- callback = function(args)
--- local client = vim.lsp.get_client_by_id(args.data.client_id)
--- if client:supports_method('textDocument/foldingRange') then
--- vim.wo.foldmethod = 'expr'
--- vim.wo.foldexpr = 'v:lua.vim.lsp.foldexpr()'
--- end
--- end,
--- })
--- ```
---
---@param lnum integer line number
function lsp.foldexpr(lnum)
return vim.lsp._folding_range.foldexpr(lnum)
end
--- Close all {kind} of folds in the the window with {winid}.
---
--- To automatically fold imports when opening a file, you can use an autocmd:
---
--- ```lua
--- vim.api.nvim_create_autocmd('LspNotify', {
--- callback = function(args)
--- if args.data.method == 'textDocument/didOpen' then
--- vim.lsp.foldclose('imports', vim.fn.bufwinid(args.buf))
--- end
--- end,
--- })
--- ```
---
---@param kind lsp.FoldingRangeKind Kind to close, one of "comment", "imports" or "region".
---@param winid? integer Defaults to the current window.
function lsp.foldclose(kind, winid)
return vim.lsp._folding_range.foldclose(kind, winid)
end
--- Provides a `foldtext` function that shows the `collapsedText` retrieved,
--- defaults to the first folded line if `collapsedText` is not provided.
function lsp.foldtext()
return vim.lsp._folding_range.foldtext()
end
---Checks whether a client is stopped.
---
---@param client_id (integer)
---@return boolean stopped true if client is stopped, false otherwise.
function lsp.client_is_stopped(client_id)
assert(client_id, 'missing client_id param')
return not all_clients[client_id]
end
--- Gets a map of client_id:client pairs for the given buffer, where each value
--- is a |vim.lsp.Client| object.
---
---@param bufnr (integer|nil): Buffer handle, or 0 for current
---@return table result is table of (client_id, client) pairs
---@deprecated Use |vim.lsp.get_clients()| instead.
function lsp.buf_get_clients(bufnr)
vim.deprecate('vim.lsp.buf_get_clients()', 'vim.lsp.get_clients()', '0.12')
local result = {} --- @type table<integer,vim.lsp.Client>
for _, client in ipairs(lsp.get_clients({ bufnr = vim._resolve_bufnr(bufnr) })) do
result[client.id] = client
end
return result
end
--- Log level dictionary with reverse lookup as well.
---
--- Can be used to lookup the number from the name or the
--- name from the number.
--- Levels by name: "TRACE", "DEBUG", "INFO", "WARN", "ERROR", "OFF"
--- Level numbers begin with "TRACE" at 0
--- @nodoc
lsp.log_levels = log.levels
--- Sets the global log level for LSP logging.
---
--- Levels by name: "TRACE", "DEBUG", "INFO", "WARN", "ERROR", "OFF"
---
--- Level numbers begin with "TRACE" at 0
---
--- Use `lsp.log_levels` for reverse lookup.
---
---@see |vim.lsp.log_levels|
---
---@param level (integer|string) the case insensitive level name or number
function lsp.set_log_level(level)
if type(level) == 'string' or type(level) == 'number' then
log.set_level(level)
else
error(string.format('Invalid log level: %q', level))
end
end
--- Gets the path of the logfile used by the LSP client.
---@return string path to log file
function lsp.get_log_path()
return log.get_filename()
end
---@private
--- Invokes a function for each LSP client attached to a buffer.
---
---@param bufnr integer Buffer number
---@param fn function Function to run on each client attached to buffer
--- {bufnr}. The function takes the client, client ID, and
--- buffer number as arguments.
---@deprecated use lsp.get_clients({ bufnr = bufnr }) with regular loop
function lsp.for_each_buffer_client(bufnr, fn)
vim.deprecate(
'vim.lsp.for_each_buffer_client()',
'lsp.get_clients({ bufnr = bufnr }) with regular loop',
'0.12'
)
bufnr = vim._resolve_bufnr(bufnr)
for _, client in pairs(lsp.get_clients({ bufnr = bufnr })) do
fn(client, client.id, bufnr)
end
end
--- @deprecated
--- Function to manage overriding defaults for LSP handlers.
---@param handler (lsp.Handler) See |lsp-handler|
---@param override_config (table) Table containing the keys to override behavior of the {handler}
function lsp.with(handler, override_config)
return function(err, result, ctx, config)
return handler(err, result, ctx, vim.tbl_deep_extend('force', config or {}, override_config))
end
end
--- Registry for client side commands.
--- This is an extension point for plugins to handle custom commands which are
--- not part of the core language server protocol specification.
---
--- The registry is a table where the key is a unique command name,
--- and the value is a function which is called if any LSP action
--- (code action, code lenses, ...) triggers the command.
---
--- If an LSP response contains a command for which no matching entry is
--- available in this registry, the command will be executed via the LSP server
--- using `workspace/executeCommand`.
---
--- The first argument to the function will be the `Command`:
--- Command
--- title: String
--- command: String
--- arguments?: any[]
---
--- The second argument is the `ctx` of |lsp-handler|
--- @type table<string,function>
lsp.commands = setmetatable({}, {
__newindex = function(tbl, key, value)
assert(type(key) == 'string', 'The key for commands in `vim.lsp.commands` must be a string')
assert(type(value) == 'function', 'Command added to `vim.lsp.commands` must be a function')
rawset(tbl, key, value)
end,
})
return lsp