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local api = vim.api
local fn = vim.fn
local luv = vim.loop
local M = {}
-- Wrapper around vim.notify with common options set.
function M.notify(msg, log_level, opts)
local default_opts = { title = "nvim-treesitter" }
vim.notify(msg, log_level, vim.tbl_extend("force", default_opts, opts or {}))
end
-- Returns the system specific path seperator.
function M.get_path_sep()
return fn.has "win32" == 1 and "\\" or "/"
end
-- Returns a function that joins the given arguments with separator. Arguments
-- can't be nil. Example:
--[[
print(M.generate_join(" ")("foo", "bar"))
--]]
-- prints "foo bar"
function M.generate_join(separator)
return function(...)
return table.concat({ ... }, separator)
end
end
M.join_path = M.generate_join(M.get_path_sep())
M.join_space = M.generate_join " "
--- Define user defined vim command which calls nvim-treesitter module function
--- - If module name is 'mod', it should be defined in hierarchy 'nvim-treesitter.mod'
--- - A table with name 'commands' should be defined in 'mod' which needs to be passed as
--- the commands param of this function
---
---@param mod string, Name of the module that resides in the heirarchy - nvim-treesitter.module
---@param commands table, Command list for the module
--- - {command_name} Name of the vim user defined command, Keys:
--- - {run}: (function) callback function that needs to be executed
--- - {f_args}: (string, default <f-args>)
--- - type of arguments that needs to be passed to the vim command
--- - {args}: (string, optional)
--- - vim command attributes
---
---Example:
--- If module is nvim-treesitter.custom_mod
--- <pre>
--- M.commands = {
--- custom_command = {
--- run = M.module_function,
--- f_args = "<f-args>",
--- args = {
--- "-range"
--- }
--- }
--- }
---
--- utils.setup_commands("custom_mod", require("nvim-treesitter.custom_mod").commands)
--- </pre>
---
--- Will generate command :
--- <pre>
--- command! -range custom_command \
--- lua require'nvim-treesitter.custom_mod'.commands.custom_command['run<bang>'](<f-args>)
--- </pre>
function M.setup_commands(mod, commands)
for command_name, def in pairs(commands) do
local f_args = def.f_args or "<f-args>"
local call_fn =
string.format("lua require'nvim-treesitter.%s'.commands.%s['run<bang>'](%s)", mod, command_name, f_args)
local parts = vim.tbl_flatten {
"command!",
"-bar",
def.args,
command_name,
call_fn,
}
api.nvim_command(table.concat(parts, " "))
end
end
function M.create_or_resue_writable_dir(dir, create_err, writeable_err)
create_err = create_err or M.join_space("Could not create dir '", dir, "': ")
writeable_err = writeable_err or M.join_space("Invalid rights, '", dir, "' should be read/write")
-- Try creating and using parser_dir if it doesn't exist
if not luv.fs_stat(dir) then
local ok, error = pcall(vim.fn.mkdir, dir, "p", "0755")
if not ok then
return nil, M.join_space(create_err, error)
end
return dir
end
-- parser_dir exists, use it if it's read/write
if luv.fs_access(dir, "RW") then
return dir
end
-- parser_dir exists but isn't read/write, give up
return nil, M.join_space(writeable_err, dir, "'")
end
function M.get_package_path()
-- Path to this source file, removing the leading '@'
local source = string.sub(debug.getinfo(1, "S").source, 2)
-- Path to the package root
return fn.fnamemodify(source, ":p:h:h:h")
end
function M.get_cache_dir()
local cache_dir = fn.stdpath "data"
if luv.fs_access(cache_dir, "RW") then
return cache_dir
elseif luv.fs_access("/tmp", "RW") then
return "/tmp"
end
return nil, M.join_space("Invalid cache rights,", fn.stdpath "data", "or /tmp should be read/write")
end
-- Returns $XDG_DATA_HOME/nvim/site, but could use any directory that is in
-- runtimepath
function M.get_site_dir()
return M.join_path(fn.stdpath "data", "site")
end
-- Gets a property at path
-- @param tbl the table to access
-- @param path the '.' separated path
-- @returns the value at path or nil
function M.get_at_path(tbl, path)
if path == "" then
return tbl
end
local segments = vim.split(path, ".", true)
local result = tbl
for _, segment in ipairs(segments) do
if type(result) == "table" then
result = result[segment]
end
end
return result
end
function M.set_jump()
vim.cmd "normal! m'"
end
function M.index_of(tbl, obj)
for i, o in ipairs(tbl) do
if o == obj then
return i
end
end
end
-- Filters a list based on the given predicate
-- @param tbl The list to filter
-- @param predicate The predicate to filter with
function M.filter(tbl, predicate)
local result = {}
for i, v in ipairs(tbl) do
if predicate(v, i) then
table.insert(result, v)
end
end
return result
end
-- Returns a list of all values from the first list
-- that are not present in the second list.
-- @params tbl1 The first table
-- @params tbl2 The second table
function M.difference(tbl1, tbl2)
return M.filter(tbl1, function(v)
return not vim.tbl_contains(tbl2, v)
end)
end
function M.identity(a)
return a
end
function M.constant(a)
return function()
return a
end
end
function M.to_func(a)
return type(a) == "function" and a or M.constant(a)
end
function M.ts_cli_version()
if fn.executable "tree-sitter" == 1 then
local handle = io.popen "tree-sitter -V"
local result = handle:read "*a"
handle:close()
return vim.split(result, "\n")[1]:match "[^tree%psitter ].*"
end
end
return M
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