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(*
This file is part of licht.
licht is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
licht is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with licht. If not, see <http://www.gnu.org/licenses/>.
*)
type t =
| Basic: 'a ScTypes.Type.t -> t (** A direct type *)
| Formula: formula -> t (** A formula *)
| Undefined: t (** The content is not defined *)
and formula =
| Expression of ScTypes.Expr.t (** A valid Expr.t *)
| Error of int * UTF8.t (** When the expression cannot be parsed *)
(** Load an expression *)
val load: UTF8.t -> t
val load_expr: t -> t
val is_defined: t -> bool
(** Evaluate the expression *)
val eval: t -> Functions.C.t -> ((int * int) -> ScTypes.Result.t option) -> ScTypes.Result.t
(** Collect all the cell referenced in the expression *)
val collect_sources: t -> Cell.Set.t
(** Represent an expression *)
val show: t -> UTF8.t
val shift: (int * int) -> t -> t
val (=): t -> t -> bool
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