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neovim/runtime/lua/vim/_editor.lua

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-- Nvim-Lua stdlib: the `vim` module (:help lua-stdlib)
--
-- Lua code lives in one of three places:
-- 1. runtime/lua/vim/ (the runtime): For "nice to have" features, e.g. the
-- `inspect` and `lpeg` modules.
-- 2. runtime/lua/vim/shared.lua: pure Lua functions which always
-- are available. Used in the test runner, as well as worker threads
-- and processes launched from Nvim.
-- 3. runtime/lua/vim/_editor.lua: Code which directly interacts with
-- the Nvim editor state. Only available in the main thread.
--
-- Guideline: "If in doubt, put it in the runtime".
--
-- Most functions should live directly in `vim.`, not in submodules.
--
-- Compatibility with Vim's `if_lua` is explicitly a non-goal.
--
-- Reference (#6580):
-- - https://github.com/luafun/luafun
-- - https://github.com/rxi/lume
-- - http://leafo.net/lapis/reference/utilities.html
-- - https://github.com/torch/paths
-- - https://github.com/bakpakin/Fennel (pretty print, repl)
-- - https://github.com/howl-editor/howl/tree/master/lib/howl/util
-- These are for loading runtime modules lazily since they aren't available in
-- the nvim binary as specified in executor.c
for k, v in pairs({
treesitter = true,
filetype = true,
loader = true,
func = true,
F = true,
lsp = true,
highlight = true,
diagnostic = true,
keymap = true,
ui = true,
health = true,
secure = true,
snippet = true,
_watch = true,
}) do
vim._submodules[k] = v
end
-- There are things which have special rules in vim._init_packages
-- for legacy reasons (uri) or for performance (_inspector).
-- most new things should go into a submodule namespace ( vim.foobar.do_thing() )
vim._extra = {
uri_from_fname = true,
uri_from_bufnr = true,
uri_to_fname = true,
uri_to_bufnr = true,
show_pos = true,
inspect_pos = true,
}
--- @private
vim.log = {
levels = {
TRACE = 0,
DEBUG = 1,
INFO = 2,
WARN = 3,
ERROR = 4,
OFF = 5,
},
}
-- TODO(lewis6991): document that the signature is system({cmd}, [{opts},] {on_exit})
--- Runs a system command or throws an error if {cmd} cannot be run.
---
--- Examples:
---
--- ```lua
---
--- local on_exit = function(obj)
--- print(obj.code)
--- print(obj.signal)
--- print(obj.stdout)
--- print(obj.stderr)
--- end
---
--- -- Runs asynchronously:
--- vim.system({'echo', 'hello'}, { text = true }, on_exit)
---
--- -- Runs synchronously:
--- local obj = vim.system({'echo', 'hello'}, { text = true }):wait()
--- -- { code = 0, signal = 0, stdout = 'hello', stderr = '' }
---
--- ```
---
--- See |uv.spawn()| for more details. Note: unlike |uv.spawn()|, vim.system
--- throws an error if {cmd} cannot be run.
---
--- @param cmd (string[]) Command to execute
--- @param opts (SystemOpts|nil) Options:
--- - cwd: (string) Set the current working directory for the sub-process.
--- - env: table<string,string> Set environment variables for the new process. Inherits the
--- current environment with `NVIM` set to |v:servername|.
--- - clear_env: (boolean) `env` defines the job environment exactly, instead of merging current
--- environment.
--- - stdin: (string|string[]|boolean) If `true`, then a pipe to stdin is opened and can be written
--- to via the `write()` method to SystemObj. If string or string[] then will be written to stdin
--- and closed. Defaults to `false`.
--- - stdout: (boolean|function)
--- Handle output from stdout. When passed as a function must have the signature `fun(err: string, data: string)`.
--- Defaults to `true`
--- - stderr: (boolean|function)
--- Handle output from stderr. When passed as a function must have the signature `fun(err: string, data: string)`.
--- Defaults to `true`.
--- - text: (boolean) Handle stdout and stderr as text. Replaces `\r\n` with `\n`.
--- - timeout: (integer) Run the command with a time limit. Upon timeout the process is sent the
--- TERM signal (15) and the exit code is set to 124.
--- - detach: (boolean) If true, spawn the child process in a detached state - this will make it
--- a process group leader, and will effectively enable the child to keep running after the
--- parent exits. Note that the child process will still keep the parent's event loop alive
--- unless the parent process calls |uv.unref()| on the child's process handle.
---
--- @param on_exit (function|nil) Called when subprocess exits. When provided, the command runs
--- asynchronously. Receives SystemCompleted object, see return of SystemObj:wait().
---
--- @return vim.SystemObj Object with the fields:
--- - pid (integer) Process ID
--- - wait (fun(timeout: integer|nil): SystemCompleted) Wait for the process to complete. Upon
--- timeout the process is sent the KILL signal (9) and the exit code is set to 124. Cannot
--- be called in |api-fast|.
--- - SystemCompleted is an object with the fields:
--- - code: (integer)
--- - signal: (integer)
--- - stdout: (string), nil if stdout argument is passed
--- - stderr: (string), nil if stderr argument is passed
--- - kill (fun(signal: integer|string))
--- - write (fun(data: string|nil)) Requires `stdin=true`. Pass `nil` to close the stream.
--- - is_closing (fun(): boolean)
function vim.system(cmd, opts, on_exit)
if type(opts) == 'function' then
on_exit = opts
opts = nil
end
return require('vim._system').run(cmd, opts, on_exit)
end
-- Gets process info from the `ps` command.
-- Used by nvim_get_proc() as a fallback.
function vim._os_proc_info(pid)
if pid == nil or pid <= 0 or type(pid) ~= 'number' then
error('invalid pid')
end
local cmd = { 'ps', '-p', pid, '-o', 'comm=' }
local r = vim.system(cmd):wait()
local name = assert(r.stdout)
if r.code == 1 and vim.trim(name) == '' then
return {} -- Process not found.
elseif r.code ~= 0 then
error('command failed: ' .. vim.fn.string(cmd))
end
local ppid_string = assert(vim.system({ 'ps', '-p', pid, '-o', 'ppid=' }):wait().stdout)
-- Remove trailing whitespace.
name = vim.trim(name):gsub('^.*/', '')
local ppid = tonumber(ppid_string) or -1
return {
name = name,
pid = pid,
ppid = ppid,
}
end
-- Gets process children from the `pgrep` command.
-- Used by nvim_get_proc_children() as a fallback.
function vim._os_proc_children(ppid)
if ppid == nil or ppid <= 0 or type(ppid) ~= 'number' then
error('invalid ppid')
end
local cmd = { 'pgrep', '-P', ppid }
local r = vim.system(cmd):wait()
if r.code == 1 and vim.trim(r.stdout) == '' then
return {} -- Process not found.
elseif r.code ~= 0 then
error('command failed: ' .. vim.fn.string(cmd))
end
local children = {}
for s in r.stdout:gmatch('%S+') do
local i = tonumber(s)
if i ~= nil then
table.insert(children, i)
end
end
return children
end
--- Gets a human-readable representation of the given object.
---
---@see |vim.print()|
---@see https://github.com/kikito/inspect.lua
---@see https://github.com/mpeterv/vinspect
---@return string
vim.inspect = vim.inspect
do
local tdots, tick, got_line1, undo_started, trailing_nl = 0, 0, false, false, false
--- Paste handler, invoked by |nvim_paste()| when a conforming UI
--- (such as the |TUI|) pastes text into the editor.
---
--- Example: To remove ANSI color codes when pasting:
---
--- ```lua
--- vim.paste = (function(overridden)
--- return function(lines, phase)
--- for i,line in ipairs(lines) do
--- -- Scrub ANSI color codes from paste input.
--- lines[i] = line:gsub('\27%[[0-9;mK]+', '')
--- end
--- overridden(lines, phase)
--- end
--- end)(vim.paste)
--- ```
---
---@see |paste|
---@alias paste_phase -1 | 1 | 2 | 3
---
---@param lines string[] # |readfile()|-style list of lines to paste. |channel-lines|
---@param phase paste_phase -1: "non-streaming" paste: the call contains all lines.
--- If paste is "streamed", `phase` indicates the stream state:
--- - 1: starts the paste (exactly once)
--- - 2: continues the paste (zero or more times)
--- - 3: ends the paste (exactly once)
---@return boolean result false if client should cancel the paste.
function vim.paste(lines, phase)
local now = vim.uv.now()
local is_first_chunk = phase < 2
local is_last_chunk = phase == -1 or phase == 3
if is_first_chunk then -- Reset flags.
tdots, tick, got_line1, undo_started, trailing_nl = now, 0, false, false, false
end
if #lines == 0 then
lines = { '' }
end
if #lines == 1 and lines[1] == '' and not is_last_chunk then
-- An empty chunk can cause some edge cases in streamed pasting,
-- so don't do anything unless it is the last chunk.
return true
end
-- Note: mode doesn't always start with "c" in cmdline mode, so use getcmdtype() instead.
if vim.fn.getcmdtype() ~= '' then -- cmdline-mode: paste only 1 line.
if not got_line1 then
got_line1 = (#lines > 1)
-- Escape control characters
local line1 = lines[1]:gsub('(%c)', '\022%1')
-- nvim_input() is affected by mappings,
-- so use nvim_feedkeys() with "n" flag to ignore mappings.
-- "t" flag is also needed so the pasted text is saved in cmdline history.
vim.api.nvim_feedkeys(line1, 'nt', true)
end
return true
end
local mode = vim.api.nvim_get_mode().mode
if undo_started then
vim.api.nvim_command('undojoin')
end
if mode:find('^i') or mode:find('^n?t') then -- Insert mode or Terminal buffer
vim.api.nvim_put(lines, 'c', false, true)
elseif phase < 2 and mode:find('^R') and not mode:find('^Rv') then -- Replace mode
-- TODO: implement Replace mode streamed pasting
-- TODO: support Virtual Replace mode
local nchars = 0
for _, line in ipairs(lines) do
nchars = nchars + line:len()
end
local row, col = unpack(vim.api.nvim_win_get_cursor(0))
local bufline = vim.api.nvim_buf_get_lines(0, row - 1, row, true)[1]
local firstline = lines[1]
firstline = bufline:sub(1, col) .. firstline
lines[1] = firstline
lines[#lines] = lines[#lines] .. bufline:sub(col + nchars + 1, bufline:len())
vim.api.nvim_buf_set_lines(0, row - 1, row, false, lines)
elseif mode:find('^[nvV\22sS\19]') then -- Normal or Visual or Select mode
if mode:find('^n') then -- Normal mode
-- When there was a trailing new line in the previous chunk,
-- the cursor is on the first character of the next line,
-- so paste before the cursor instead of after it.
vim.api.nvim_put(lines, 'c', not trailing_nl, false)
else -- Visual or Select mode
vim.api.nvim_command([[exe "silent normal! \<Del>"]])
local del_start = vim.fn.getpos("'[")
local cursor_pos = vim.fn.getpos('.')
if mode:find('^[VS]') then -- linewise
if cursor_pos[2] < del_start[2] then -- replacing lines at eof
-- create a new line
vim.api.nvim_put({ '' }, 'l', true, true)
end
vim.api.nvim_put(lines, 'c', false, false)
else
-- paste after cursor when replacing text at eol, otherwise paste before cursor
vim.api.nvim_put(lines, 'c', cursor_pos[3] < del_start[3], false)
end
end
-- put cursor at the end of the text instead of one character after it
vim.fn.setpos('.', vim.fn.getpos("']"))
trailing_nl = lines[#lines] == ''
else -- Don't know what to do in other modes
return false
end
undo_started = true
if phase ~= -1 and (now - tdots >= 100) then
local dots = ('.'):rep(tick % 4)
tdots = now
tick = tick + 1
-- Use :echo because Lua print('') is a no-op, and we want to clear the
-- message when there are zero dots.
vim.api.nvim_command(('echo "%s"'):format(dots))
end
if is_last_chunk then
vim.api.nvim_command('redraw' .. (tick > 1 and '|echo ""' or ''))
end
return true -- Paste will not continue if not returning `true`.
end
end
--- Returns a function which calls {fn} via |vim.schedule()|.
---
--- The returned function passes all arguments to {fn}.
---
--- Example:
---
--- ```lua
--- function notify_readable(_err, readable)
--- vim.notify("readable? " .. tostring(readable))
--- end
--- vim.uv.fs_access(vim.fn.stdpath("config"), "R", vim.schedule_wrap(notify_readable))
--- ```
---
---@see |lua-loop-callbacks|
---@see |vim.schedule()|
---@see |vim.in_fast_event()|
---@param fn function
---@return function
function vim.schedule_wrap(fn)
return function(...)
local args = vim.F.pack_len(...)
vim.schedule(function()
fn(vim.F.unpack_len(args))
end)
end
end
-- vim.fn.{func}(...)
---@private
vim.fn = setmetatable({}, {
__index = function(t, key)
local _fn
if vim.api[key] ~= nil then
_fn = function()
error(string.format('Tried to call API function with vim.fn: use vim.api.%s instead', key))
end
else
_fn = function(...)
return vim.call(key, ...)
end
end
t[key] = _fn
return _fn
end,
})
--- @private
vim.funcref = function(viml_func_name)
return vim.fn[viml_func_name]
end
local VIM_CMD_ARG_MAX = 20
--- Executes Vim script commands.
---
--- Note that `vim.cmd` can be indexed with a command name to return a callable function to the
--- command.
---
--- Example:
---
--- ```lua
--- vim.cmd('echo 42')
--- vim.cmd([[
--- augroup My_group
--- autocmd!
--- autocmd FileType c setlocal cindent
--- augroup END
--- ]])
---
--- -- Ex command :echo "foo"
--- -- Note string literals need to be double quoted.
--- vim.cmd('echo "foo"')
--- vim.cmd { cmd = 'echo', args = { '"foo"' } }
--- vim.cmd.echo({ args = { '"foo"' } })
--- vim.cmd.echo('"foo"')
---
--- -- Ex command :write! myfile.txt
--- vim.cmd('write! myfile.txt')
--- vim.cmd { cmd = 'write', args = { "myfile.txt" }, bang = true }
--- vim.cmd.write { args = { "myfile.txt" }, bang = true }
--- vim.cmd.write { "myfile.txt", bang = true }
---
--- -- Ex command :colorscheme blue
--- vim.cmd('colorscheme blue')
--- vim.cmd.colorscheme('blue')
--- ```
---
---@param command string|table Command(s) to execute.
--- If a string, executes multiple lines of Vim script at once. In this
--- case, it is an alias to |nvim_exec2()|, where `opts.output` is set
--- to false. Thus it works identical to |:source|.
--- If a table, executes a single command. In this case, it is an alias
--- to |nvim_cmd()| where `opts` is empty.
---@see |ex-cmd-index|
vim.cmd = setmetatable({}, {
__call = function(_, command)
if type(command) == 'table' then
return vim.api.nvim_cmd(command, {})
else
vim.api.nvim_exec2(command, {})
return ''
end
end,
__index = function(t, command)
t[command] = function(...)
local opts
if select('#', ...) == 1 and type(select(1, ...)) == 'table' then
opts = select(1, ...)
-- Move indexed positions in opts to opt.args
if opts[1] and not opts.args then
opts.args = {}
for i = 1, VIM_CMD_ARG_MAX do
if not opts[i] then
break
end
opts.args[i] = opts[i]
opts[i] = nil
end
end
else
opts = { args = { ... } }
end
opts.cmd = command
return vim.api.nvim_cmd(opts, {})
end
return t[command]
end,
})
--- @class vim.var_accessor
--- @field [string] any
--- @field [integer] vim.var_accessor
-- These are the vim.env/v/g/o/bo/wo variable magic accessors.
do
local validate = vim.validate
--- @param scope string
--- @param handle? false|integer
--- @return vim.var_accessor
local function make_dict_accessor(scope, handle)
validate({
scope = { scope, 's' },
})
local mt = {}
function mt:__newindex(k, v)
return vim._setvar(scope, handle or 0, k, v)
end
function mt:__index(k)
if handle == nil and type(k) == 'number' then
return make_dict_accessor(scope, k)
end
return vim._getvar(scope, handle or 0, k)
end
return setmetatable({}, mt)
end
vim.g = make_dict_accessor('g', false)
vim.v = make_dict_accessor('v', false) --[[@as vim.v]]
vim.b = make_dict_accessor('b')
vim.w = make_dict_accessor('w')
vim.t = make_dict_accessor('t')
end
--- Gets a dict of line segment ("chunk") positions for the region from `pos1` to `pos2`.
---
--- Input and output positions are byte positions, (0,0)-indexed. "End of line" column
--- position (for example, |linewise| visual selection) is returned as |v:maxcol| (big number).
---
---@param bufnr integer Buffer number, or 0 for current buffer
---@param pos1 integer[]|string Start of region as a (line, column) tuple or |getpos()|-compatible string
---@param pos2 integer[]|string End of region as a (line, column) tuple or |getpos()|-compatible string
---@param regtype string \|setreg()|-style selection type
---@param inclusive boolean Controls whether the ending column is inclusive (see also 'selection').
---@return table region Dict of the form `{linenr = {startcol,endcol}}`. `endcol` is exclusive, and
---whole lines are returned as `{startcol,endcol} = {0,-1}`.
function vim.region(bufnr, pos1, pos2, regtype, inclusive)
if not vim.api.nvim_buf_is_loaded(bufnr) then
vim.fn.bufload(bufnr)
end
if type(pos1) == 'string' then
local pos = vim.fn.getpos(pos1)
pos1 = { pos[2] - 1, pos[3] - 1 }
end
if type(pos2) == 'string' then
local pos = vim.fn.getpos(pos2)
pos2 = { pos[2] - 1, pos[3] - 1 }
end
if pos1[1] > pos2[1] or (pos1[1] == pos2[1] and pos1[2] > pos2[2]) then
pos1, pos2 = pos2, pos1
end
-- getpos() may return {0,0,0,0}
if pos1[1] < 0 or pos1[2] < 0 then
return {}
end
-- check that region falls within current buffer
local buf_line_count = vim.api.nvim_buf_line_count(bufnr)
pos1[1] = math.min(pos1[1], buf_line_count - 1)
pos2[1] = math.min(pos2[1], buf_line_count - 1)
-- in case of block selection, columns need to be adjusted for non-ASCII characters
-- TODO: handle double-width characters
if regtype:byte() == 22 then
local bufline = vim.api.nvim_buf_get_lines(bufnr, pos1[1], pos1[1] + 1, true)[1]
pos1[2] = vim.str_utfindex(bufline, pos1[2])
end
local region = {}
for l = pos1[1], pos2[1] do
local c1 --- @type number
local c2 --- @type number
if regtype:byte() == 22 then -- block selection: take width from regtype
c1 = pos1[2]
c2 = c1 + tonumber(regtype:sub(2))
-- and adjust for non-ASCII characters
local bufline = vim.api.nvim_buf_get_lines(bufnr, l, l + 1, true)[1]
local utflen = vim.str_utfindex(bufline, #bufline)
if c1 <= utflen then
c1 = assert(tonumber(vim.str_byteindex(bufline, c1)))
else
c1 = #bufline + 1
end
if c2 <= utflen then
c2 = assert(tonumber(vim.str_byteindex(bufline, c2)))
else
c2 = #bufline + 1
end
elseif regtype == 'V' then -- linewise selection, always return whole line
c1 = 0
c2 = -1
else
c1 = (l == pos1[1]) and pos1[2] or 0
if inclusive and l == pos2[1] then
local bufline = vim.api.nvim_buf_get_lines(bufnr, pos2[1], pos2[1] + 1, true)[1]
pos2[2] = vim.fn.byteidx(bufline, vim.fn.charidx(bufline, pos2[2]) + 1)
end
c2 = (l == pos2[1]) and pos2[2] or -1
end
table.insert(region, l, { c1, c2 })
end
return region
end
--- Defers calling {fn} until {timeout} ms passes.
---
--- Use to do a one-shot timer that calls {fn}
--- Note: The {fn} is |vim.schedule_wrap()|ped automatically, so API functions are
--- safe to call.
---@param fn function Callback to call once `timeout` expires
---@param timeout integer Number of milliseconds to wait before calling `fn`
---@return table timer luv timer object
function vim.defer_fn(fn, timeout)
vim.validate({ fn = { fn, 'c', true } })
local timer = assert(vim.uv.new_timer())
timer:start(
timeout,
0,
vim.schedule_wrap(function()
if not timer:is_closing() then
timer:close()
end
fn()
end)
)
return timer
end
--- Displays a notification to the user.
---
--- This function can be overridden by plugins to display notifications using a
--- custom provider (such as the system notification provider). By default,
--- writes to |:messages|.
---
---@param msg string Content of the notification to show to the user.
---@param level integer|nil One of the values from |vim.log.levels|.
---@param opts table|nil Optional parameters. Unused by default.
---@diagnostic disable-next-line: unused-local
function vim.notify(msg, level, opts) -- luacheck: no unused args
if level == vim.log.levels.ERROR then
vim.api.nvim_err_writeln(msg)
elseif level == vim.log.levels.WARN then
vim.api.nvim_echo({ { msg, 'WarningMsg' } }, true, {})
else
vim.api.nvim_echo({ { msg } }, true, {})
end
end
do
local notified = {}
--- Displays a notification only one time.
---
--- Like |vim.notify()|, but subsequent calls with the same message will not
--- display a notification.
---
---@param msg string Content of the notification to show to the user.
---@param level integer|nil One of the values from |vim.log.levels|.
---@param opts table|nil Optional parameters. Unused by default.
---@return boolean true if message was displayed, else false
function vim.notify_once(msg, level, opts)
if not notified[msg] then
vim.notify(msg, level, opts)
notified[msg] = true
return true
end
return false
end
end
local on_key_cbs = {}
--- Adds Lua function {fn} with namespace id {ns_id} as a listener to every,
--- yes every, input key.
---
--- The Nvim command-line option |-w| is related but does not support callbacks
--- and cannot be toggled dynamically.
---
---@note {fn} will be removed on error.
---@note {fn} will not be cleared by |nvim_buf_clear_namespace()|
---@note {fn} will receive the keys after mappings have been evaluated
---
---@param fn fun(key: string) Function invoked on every key press. |i_CTRL-V|
--- Returning nil removes the callback associated with namespace {ns_id}.
---@param ns_id integer? Namespace ID. If nil or 0, generates and returns a
--- new |nvim_create_namespace()| id.
---
---@return integer Namespace id associated with {fn}. Or count of all callbacks
---if on_key() is called without arguments.
function vim.on_key(fn, ns_id)
if fn == nil and ns_id == nil then
return vim.tbl_count(on_key_cbs)
end
vim.validate({
fn = { fn, 'c', true },
ns_id = { ns_id, 'n', true },
})
if ns_id == nil or ns_id == 0 then
ns_id = vim.api.nvim_create_namespace('')
end
on_key_cbs[ns_id] = fn
return ns_id
end
--- Executes the on_key callbacks.
---@private
function vim._on_key(char)
local failed_ns_ids = {}
local failed_messages = {}
for k, v in pairs(on_key_cbs) do
local ok, err_msg = pcall(v, char)
if not ok then
vim.on_key(nil, k)
table.insert(failed_ns_ids, k)
table.insert(failed_messages, err_msg)
end
end
if failed_ns_ids[1] then
error(
string.format(
"Error executing 'on_key' with ns_ids '%s'\n Messages: %s",
table.concat(failed_ns_ids, ', '),
table.concat(failed_messages, '\n')
)
)
end
end
--- Generates a list of possible completions for the string.
--- String has the pattern.
---
--- 1. Can we get it to just return things in the global namespace with that name prefix
--- 2. Can we get it to return things from global namespace even with `print(` in front.
---
--- @param pat string
function vim._expand_pat(pat, env)
env = env or _G
if pat == '' then
local result = vim.tbl_keys(env)
table.sort(result)
return result, 0
end
-- TODO: We can handle spaces in [] ONLY.
-- We should probably do that at some point, just for cooler completion.
-- TODO: We can suggest the variable names to go in []
-- This would be difficult as well.
-- Probably just need to do a smarter match than just `:match`
-- Get the last part of the pattern
local last_part = pat:match('[%w.:_%[%]\'"]+$')
if not last_part then
return {}, 0
end
local parts, search_index = vim._expand_pat_get_parts(last_part)
local match_part = string.sub(last_part, search_index, #last_part)
local prefix_match_pat = string.sub(pat, 1, #pat - #match_part) or ''
local final_env = env
for _, part in ipairs(parts) do
if type(final_env) ~= 'table' then
return {}, 0
end
local key
-- Normally, we just have a string
-- Just attempt to get the string directly from the environment
if type(part) == 'string' then
key = part
else
-- However, sometimes you want to use a variable, and complete on it
-- With this, you have the power.
-- MY_VAR = "api"
-- vim[MY_VAR]
-- -> _G[MY_VAR] -> "api"
local result_key = part[1]
if not result_key then
return {}, 0
end
local result = rawget(env, result_key)
if result == nil then
return {}, 0
end
key = result
end
local field = rawget(final_env, key)
if field == nil then
local mt = getmetatable(final_env)
if mt and type(mt.__index) == 'table' then
field = rawget(mt.__index, key)
elseif final_env == vim and (vim._submodules[key] or vim._extra[key]) then
field = vim[key]
end
end
final_env = field
if not final_env then
return {}, 0
end
end
local keys = {}
local function insert_keys(obj)
for k, _ in pairs(obj) do
if type(k) == 'string' and string.sub(k, 1, string.len(match_part)) == match_part then
keys[k] = true
end
end
end
if type(final_env) == 'table' then
insert_keys(final_env)
end
local mt = getmetatable(final_env)
if mt and type(mt.__index) == 'table' then
insert_keys(mt.__index)
end
if final_env == vim then
insert_keys(vim._submodules)
insert_keys(vim._extra)
end
keys = vim.tbl_keys(keys)
table.sort(keys)
return keys, #prefix_match_pat
end
--- @param lua_string string
vim._expand_pat_get_parts = function(lua_string)
local parts = {}
local accumulator, search_index = '', 1
local in_brackets = false
local bracket_end = -1 --- @type integer?
local string_char = nil
for idx = 1, #lua_string do
local s = lua_string:sub(idx, idx)
if not in_brackets and (s == '.' or s == ':') then
table.insert(parts, accumulator)
accumulator = ''
search_index = idx + 1
elseif s == '[' then
in_brackets = true
table.insert(parts, accumulator)
accumulator = ''
search_index = idx + 1
elseif in_brackets then
if idx == bracket_end then
in_brackets = false
search_index = idx + 1
if string_char == 'VAR' then
table.insert(parts, { accumulator })
accumulator = ''
string_char = nil
end
elseif not string_char then
bracket_end = string.find(lua_string, ']', idx, true)
if s == '"' or s == "'" then
string_char = s
elseif s ~= ' ' then
string_char = 'VAR'
accumulator = s
end
elseif string_char then
if string_char ~= s then
accumulator = accumulator .. s
else
table.insert(parts, accumulator)
accumulator = ''
string_char = nil
end
end
else
accumulator = accumulator .. s
end
end
parts = vim.tbl_filter(function(val)
return #val > 0
end, parts)
return parts, search_index
end
do
-- Ideally we should just call complete() inside omnifunc, though there are
-- some bugs, so fake the two-step dance for now.
local matches
--- Omnifunc for completing Lua values from the runtime Lua interpreter,
--- similar to the builtin completion for the `:lua` command.
---
--- Activate using `set omnifunc=v:lua.vim.lua_omnifunc` in a Lua buffer.
function vim.lua_omnifunc(find_start, _)
if find_start == 1 then
local line = vim.api.nvim_get_current_line()
local prefix = string.sub(line, 1, vim.api.nvim_win_get_cursor(0)[2])
local pos
matches, pos = vim._expand_pat(prefix)
return (#matches > 0 and pos) or -1
else
return matches
end
end
end
---@private
function vim.pretty_print(...)
vim.deprecate('vim.pretty_print()', 'vim.print()', '0.10')
return vim.print(...)
end
--- "Pretty prints" the given arguments and returns them unmodified.
---
--- Example:
---
--- ```lua
--- local hl_normal = vim.print(vim.api.nvim_get_hl(0, { name = 'Normal' }))
--- ```
---
--- @see |vim.inspect()|
--- @see |:=|
--- @return any # given arguments.
function vim.print(...)
if vim.in_fast_event() then
print(...)
return ...
end
for i = 1, select('#', ...) do
local o = select(i, ...)
if type(o) == 'string' then
vim.api.nvim_out_write(o)
else
vim.api.nvim_out_write(vim.inspect(o, { newline = '\n', indent = ' ' }))
end
vim.api.nvim_out_write('\n')
end
return ...
end
--- Translates keycodes.
---
--- Example:
---
--- ```lua
--- local k = vim.keycode
--- vim.g.mapleader = k'<bs>'
--- ```
---
--- @param str string String to be converted.
--- @return string
--- @see |nvim_replace_termcodes()|
function vim.keycode(str)
return vim.api.nvim_replace_termcodes(str, true, true, true)
end
--- @param server_addr string
--- @param connect_error string
function vim._cs_remote(rcid, server_addr, connect_error, args)
--- @return string
local function connection_failure_errmsg(consequence)
local explanation --- @type string
if server_addr == '' then
explanation = 'No server specified with --server'
else
explanation = "Failed to connect to '" .. server_addr .. "'"
if connect_error ~= '' then
explanation = explanation .. ': ' .. connect_error
end
end
return 'E247: ' .. explanation .. '. ' .. consequence
end
local f_silent = false
local f_tab = false
local subcmd = string.sub(args[1], 10)
if subcmd == 'tab' then
f_tab = true
elseif subcmd == 'silent' then
f_silent = true
elseif
subcmd == 'wait'
or subcmd == 'wait-silent'
or subcmd == 'tab-wait'
or subcmd == 'tab-wait-silent'
then
return { errmsg = 'E5600: Wait commands not yet implemented in Nvim' }
elseif subcmd == 'tab-silent' then
f_tab = true
f_silent = true
elseif subcmd == 'send' then
if rcid == 0 then
return { errmsg = connection_failure_errmsg('Send failed.') }
end
vim.rpcrequest(rcid, 'nvim_input', args[2])
return { should_exit = true, tabbed = false }
elseif subcmd == 'expr' then
if rcid == 0 then
return { errmsg = connection_failure_errmsg('Send expression failed.') }
end
local res = tostring(vim.rpcrequest(rcid, 'nvim_eval', args[2]))
return { result = res, should_exit = true, tabbed = false }
elseif subcmd ~= '' then
return { errmsg = 'Unknown option argument: ' .. tostring(args[1]) }
end
if rcid == 0 then
if not f_silent then
vim.notify(connection_failure_errmsg('Editing locally'), vim.log.levels.WARN)
end
else
local command = {}
if f_tab then
table.insert(command, 'tab')
end
table.insert(command, 'drop')
for i = 2, #args do
table.insert(command, vim.fn.fnameescape(args[i]))
end
vim.fn.rpcrequest(rcid, 'nvim_command', table.concat(command, ' '))
end
return {
should_exit = rcid ~= 0,
tabbed = f_tab,
}
end
--- Shows a deprecation message to the user.
---
---@param name string Deprecated feature (function, API, etc.).
---@param alternative string|nil Suggested alternative feature.
---@param version string Version when the deprecated function will be removed.
---@param plugin string|nil Name of the plugin that owns the deprecated feature.
--- Defaults to "Nvim".
---@param backtrace boolean|nil Prints backtrace. Defaults to true.
---
---@return string|nil # Deprecated message, or nil if no message was shown.
function vim.deprecate(name, alternative, version, plugin, backtrace)
-- Only issue warning if feature is hard-deprecated as specified by MAINTAIN.md.
if plugin == nil then
local current_version = vim.version()
local deprecated_version = assert(vim.version.parse(version))
local soft_deprecated_version =
{ deprecated_version.major, deprecated_version.minor - 1, deprecated_version.patch }
local deprecate = vim.version.lt(current_version, soft_deprecated_version)
if deprecate then
return
end
end
local msg = ('%s is deprecated'):format(name)
plugin = plugin or 'Nvim'
msg = alternative and ('%s, use %s instead.'):format(msg, alternative) or msg
msg = ('%s%s\nThis feature will be removed in %s version %s'):format(
msg,
(plugin == 'Nvim' and ' :help deprecated' or ''),
plugin,
version
)
local displayed = vim.notify_once(msg, vim.log.levels.WARN)
if displayed and backtrace ~= false then
vim.notify(debug.traceback('', 2):sub(2), vim.log.levels.WARN)
end
return displayed and msg or nil
end
require('vim._options')
-- Remove at Nvim 1.0
---@deprecated
vim.loop = vim.uv
return vim
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