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|
open StdLabels
module Syntax = Syntax
module CTE = Cte
module Table = ImportDataTypes.Table
module Path = ImportDataTypes.Path
module T = Read_conf
module Expression = ImportExpression.T
let latest_version = 1
module TomlReader = Read_conf.Make (Helpers.Toml.Decode)
let t_of_toml : Otoml.t -> (Syntax.t, string) result =
fun toml ->
let version =
Otoml.find_or ~default:latest_version toml
(Otoml.get_integer ~strict:false)
[ "version" ]
in
match version with
| n when n = latest_version -> TomlReader.read toml
| _ ->
Printf.eprintf "Unsuported version : %d\n" version;
exit 1
let dummy_conf =
Syntax.
{
source = { file = ""; tab = 0; name = "" };
version = latest_version;
locale = Some "C";
externals = [];
columns = [];
filters = [];
sort = [];
uniq = [];
}
let get_table_for_name : Syntax.t -> string option -> Table.t =
fun conf name ->
match name with
| None -> conf.source
| Some name ->
if String.equal name conf.source.name then conf.source
else
let ext =
List.find conf.externals ~f:(fun (ext : Syntax.Extern.t) ->
String.equal name ext.target.name)
in
ext.target
let root_table : Syntax.t -> Table.t = fun conf -> conf.source
let get_dependancies_for_table : Syntax.t -> Table.t -> Syntax.Extern.t list =
fun conf source ->
let is_root = source = conf.source in
List.filter conf.externals ~f:(fun (ext : Syntax.Extern.t) ->
(* Enumerate the intern_key and check the source pointed by each column *)
Expression.fold_values ext.intern_key ~init:false ~f:(fun acc expr ->
if acc then acc
else
match expr.Syntax.Path.alias with
| Some v -> String.equal v source.name
| None -> is_root))
let expression_from_string s =
Read_conf.ExpressionParser.of_string Read_conf.ExpressionParser.path s
|
