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mirror of https://gitlab.com/scemama/QCaml.git synced 2024-10-31 19:23:40 +01:00
QCaml/Utils/Range.ml

47 lines
988 B
OCaml

type t = int list
let to_int_list r = r
let expand_range r =
match String.split_on_char '-' r with
| s :: f :: [] ->
begin
let start = int_of_string s
and finish = int_of_string f
in
assert (start <= finish) ;
let rec do_work = function
| i when i=finish -> [ i ]
| i -> i::(do_work (i+1))
in do_work start
end
| r :: [] -> int_of_string r
| [] -> []
| _ -> invalid_arg "Only one range expected"
let of_string s =
match s.[0] with
| '0' .. '9' -> [ int_of_string s ]
| _ ->
assert (s.[0] = '[') ;
assert (s.[(String.length s)-1] = ']') ;
let s = String.sub s 1 ((String.length s) - 2) in
let l = String_ext.split ~on:',' s in
let l = List.map expand_range l in
List.concat l
|> List.sort_uniq compare
let to_string l =
"[" ^
(List.map string_of_int l
|> String.concat ",") ^
"]"
let pp_range ppf t =
Format.fprintf "@[%s@]" ppf (to_string t)