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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/>.
*)
module T = struct
type 'a t = unit
type 'a obs = ('a -> 'a)
let str s = ()
let num n = ()
let date d = ()
let bool b = ()
let observe () x = x
end
module R = struct
type 'a obs = Cell.Set.t -> Cell.Set.t
type 'a t = 'a obs
let cell (c:Cell.t) set = Cell.Set.add (Cell.to_pair c) set
let range c1 c2 set = begin
let x1, y1 = Cell.to_pair c1
and x2, y2 = Cell.to_pair c2 in
let f_x x acc = begin
let f_y y acc = begin
Cell.Set.add (x, y) acc
end in
Tools.fold_for f_y y1 y2 acc
end in
Tools.fold_for f_x x1 x2 set
end
let observe elem set = elem set
end
let observe f value = f value
let value v () = T.observe v
let ref r () = R.observe r
let call0 ident () acc = acc
let call1 ident p1 () acc = observe p1 acc
let call2 ident p1 p2 () acc = observe p2 (observe p1 acc)
let call3 ident p1 p2 p3 () acc = observe p3 (observe p2 (observe p1 acc))
let callN ident params () acc = List.fold_left (fun acc p -> observe p acc) acc params
let expression e () = e
type obs = Cell.Set.t -> Cell.Set.t
type t = unit
type repr = obs
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