1 files changed, 70 insertions, 0 deletions
diff --git a/src/cell.ml b/src/cell.ml
new file mode 100755
index 0000000..e6ccd63
--- /dev/null
+++ b/src/cell.ml
@@ -0,0 +1,70 @@
+type t = (int * int) * (bool * bool)
+
+let u = UTF8.from_utf8string
+
+let from_string (fixed_x, x_name) (fixed_y, y) =
+
+  let x = ref 0 in
+  String.iter (function
+  | 'a'..'z' as c -> x:= (!x * 26) + ((int_of_char c) - 96)
+  | 'A'..'Z' as c -> x:= (!x * 26) + ((int_of_char c) - 64)
+  | _ -> ()
+  ) x_name;
+  (!x, y), (fixed_x, fixed_y)
+
+let to_hname x = begin
+  let rec extract acc value =
+    if value > 0 then (
+      let value' = value - 1 in
+      let rem = value' mod 26 in
+      let quot = (value' - rem) / 26
+      in extract ((char_of_int (65 + rem))::acc) quot
+    ) else (
+      acc
+    )
+  in
+  let res = extract [] x
+  and buff = UTF8.Buffer.create 4 in
+  List.iter (fun c -> UTF8.Buffer.add_char buff c) res;
+  UTF8.Buffer.contents buff
+end
+
+let to_string ((x, y), (fixed_x, fixed_y)) =
+  let buff = UTF8.Buffer.create 2 in
+
+  if fixed_x then UTF8.Buffer.add_char buff '$';
+  UTF8.Buffer.add_string buff (to_hname x);
+  if fixed_y then UTF8.Buffer.add_char buff '$';
+  UTF8.Buffer.add_string buff @@ u @@ string_of_int y;
+  UTF8.Buffer.contents buff
+
+let to_buffer buff ((x, y), (fixed_x, fixed_y)) = begin
+  if fixed_x then UTF8.Buffer.add_char buff '$';
+  UTF8.Buffer.add_string buff (to_hname x);
+  if fixed_y then UTF8.Buffer.add_char buff '$';
+  UTF8.Buffer.add_string buff @@ u @@ string_of_int y
+end
+
+let to_string t =
+  let buff = UTF8.Buffer.create 2 in
+  to_buffer buff t;
+  UTF8.Buffer.contents buff
+
+let to_pair = Pervasives.fst
+
+module Set = (struct
+  include Set.Make(struct
+    type t = (int * int)
+    let compare = Pervasives.compare
+  end)
+
+  let show_int_tuple b t = Tools.Tuple2.printb
+    (fun b x -> UTF8.Buffer.add_string b @@u(string_of_int x))
+    (fun b x -> UTF8.Buffer.add_string b @@u(string_of_int x))
+    b t
+
+  let printb buff =
+    iter (fun x -> to_buffer buff (x, (false,false)); UTF8.Buffer.add_char buff ' ')
+
+end)
+