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local api = vim.api
local fn = vim.fn
local luv = vim.loop
local M = {}
function M.setup_commands(mod, commands)
for command_name, def in pairs(commands) do
local call_fn = string.format("lua require'nvim-treesitter.%s'.commands.%s['run<bang>'](<f-args>)", mod, command_name)
local parts = vim.tbl_flatten({
"command!",
def.args,
command_name,
call_fn,
})
api.nvim_command(table.concat(parts, " "))
end
end
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())
local join_space = M.generate_join(" ")
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, 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()
local path_sep = M.get_path_sep()
return M.join_path(fn.stdpath('data'), path_sep, 'site')
end
-- Try the package dir of the nvim-treesitter plugin first, followed by the
-- "site" dir from "runtimepath". "site" dir will be created if it doesn't
-- exist. Using only the package dir won't work when the plugin is installed
-- with Nix, since the "/nix/store" is read-only.
function M.get_parser_install_dir(folder_name)
folder_name = folder_name or "parser"
local package_path = M.get_package_path()
local package_path_parser_dir = M.join_path(package_path, folder_name)
-- If package_path is read/write, use that
if luv.fs_access(package_path_parser_dir, 'RW') then
return package_path_parser_dir
end
local site_dir = M.get_site_dir()
local path_sep = M.get_path_sep()
local parser_dir = M.join_path(site_dir, path_sep, folder_name)
-- Try creating and using parser_dir if it doesn't exist
if not luv.fs_stat(parser_dir) then
local ok, error = pcall(vim.fn.mkdir, parser_dir, "p", "0755")
if not ok then
return nil, join_space('Couldn\'t create parser dir', parser_dir, ':', error)
end
return parser_dir
end
-- parser_dir exists, use it if it's read/write
if luv.fs_access(parser_dir, 'RW') then
return parser_dir
end
-- package_path isn't read/write, parser_dir exists but isn't read/write
-- either, give up
return nil, join_space('Invalid cache rights,', package_path, 'or', parser_dir, 'should be read/write')
end
function M.get_parser_info_dir()
return M.get_parser_install_dir('parser-info')
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
-- Prints a warning message
-- @param text the text message
function M.print_warning(text)
api.nvim_command(string.format([[echohl WarningMsg | echo "%s" | echohl None]], text))
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
return M
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