Accessing analyzed ast from nelua code

[kmafeni04]

Good day
I'm learning how to write an lsp by actually writing one in nelua for nelua and I've come across a major issue.

The issue is getting ast information:
Currently I am passing everything to the cli with a strange workaround so as to avoid loosing the context of the current file.
To do this, I am creating a temporary file on every request which is quite slow especially when all I'm doing is typing where the temporary file is created in the same location as the file being worked on

require 'os'
require 'io'

local function create_tmp_file(current_file_path: string, current_file: string): string
    local tmp_name = os.tmpname():gsub("/", "_")
    local _, current_file_name_seq = current_file_path:match("[^/]+%.nelua")
    local tmp_file_name = current_file_path:gsub(current_file_name_seq[1], "") .. tmp_name .. "." .. current_file_path:gsub("/", ".")
    local tmp_file = io.open(tmp_file_name, "w")
    tmp_file:write(current_file)
    tmp_file:close()

  return tmp_file_name
end

return create_tmp_file

then calling:

local ast = io.popen("nelua --print-analyzed-ast " .. tmp_file_name):read("a")
os.remove(tmp_file_name)

Is there a better way to pass the current files content to be parsed then receive ast?

I read here that you recommend that it's better to write the lsp in lua, is that still the case?