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local platform = require "nvim-lsp-installer.platform"
local Data = require "nvim-lsp-installer.data"
local M = {}
function M.pipe(installers)
if #installers == 0 then
error "No installers to pipe."
end
return function(server, callback, context)
local function execute(idx)
local ok, err = pcall(installers[idx], server, function(success)
if not success then
-- oh no, error. exit early
callback(success)
elseif installers[idx + 1] then
-- iterate
execute(idx + 1)
else
-- we done
callback(success)
end
end, context)
if not ok then
context.stdio_sink.stderr(tostring(err) .. "\n")
callback(false)
end
end
execute(1)
end
end
-- much fp, very wow
function M.compose(installers)
return M.pipe(Data.list_reverse(installers))
end
function M.always_succeed(installer)
return function(server, callback, context)
installer(server, function()
callback(true)
end, context)
end
end
local function get_by_platform(platform_table)
if platform.is_mac then
return platform_table.mac or platform_table.unix
elseif platform.is_linux then
return platform_table.linux or platform_table.unix
elseif platform.is_unix then
return platform_table.unix
elseif platform.is_win then
return platform_table.win
else
return nil
end
end
-- non-exhaustive
function M.on(platform_table)
return function(server, callback, context)
local installer = get_by_platform(platform_table)
if installer then
installer(server, callback, context)
else
callback(true)
end
end
end
-- exhaustive
function M.when(platform_table)
return function(server, callback, context)
local installer = get_by_platform(platform_table)
if installer then
installer(server, callback, context)
else
context.stdio_sink.stderr(
("Current operating system is not yet supported for server %q.\n"):format(server.name)
)
callback(false)
end
end
end
return M
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