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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 D = DataType
module T = Tools
type _ typ =
| Unit: unit typ
| Bool: D.Bool.t typ
| Num: D.Num.t typ
| String: UTF8.t typ
| List: 'a typ -> 'a list typ
let t_unit = Unit
let t_bool: DataType.Bool.t typ = Bool
let t_int: DataType.Num.t typ = Num
let t_string: UTF8.t typ = String
let t_list (t: 'a typ): 'a list typ = List t
let typ_of_format: type a. a ScTypes.DataFormat.t -> a typ = function
| ScTypes.DataFormat.Date -> Num
| ScTypes.DataFormat.Number -> Num
| ScTypes.DataFormat.String -> String
| ScTypes.DataFormat.Bool -> Bool
let rec repr:
type a. Format.formatter -> a typ -> unit =
fun printer typ -> match typ with
| Unit -> Format.fprintf printer "Unit"
| Bool -> Format.fprintf printer "Bool"
| Num -> Format.fprintf printer "Num"
| String -> Format.fprintf printer "String"
| List t -> Format.fprintf printer "List[%a]"
repr t
module C = Catalog.Make(struct
let repr = repr
let rec compare_typ: type a b. a typ -> b typ -> (a, b) T.cmp =
begin fun a b ->
match a, b with
| Unit, Unit -> T.Eq
| Bool, Bool -> T.Eq
| Num, Num -> T.Eq
| String, String -> T.Eq
| List l1, List l2 ->
begin match compare_typ l1 l2 with
| T.Lt -> T.Lt
| T.Eq -> T.Eq
| T.Gt -> T.Gt
end
| x, y -> if (T.Ex x) > (T.Ex y) then T.Gt else T.Lt
end
type 'a t = 'a typ
type 'a returnType = 'a ScTypes.ReturnType.t
end)
let f_num = ScTypes.ReturnType.f_num
let f_date = ScTypes.ReturnType.f_date
let f_number = ScTypes.ReturnType.f_number
let f_string = ScTypes.ReturnType.f_string
let f_bool = ScTypes.ReturnType.f_bool
module Make_Compare(Comp: D.COMPARABLE) = struct
let register t catalog = begin catalog
|> C.register2 "=" (t, t) f_bool Comp.eq
|> C.register2 "<>" (t, t) f_bool Comp.neq
|> C.register2 ">" (t, t) f_bool Comp.gt
|> C.register2 ">=" (t, t) f_bool Comp.ge
|> C.register2 "<" (t, t) f_bool Comp.lt
|> C.register2 "<=" (t, t) f_bool Comp.le
end
end
let built_in catalog = begin
let module CompareNum = Make_Compare(D.Num) in
let module CompareString = Make_Compare(D.String) in
let module CompareBool = Make_Compare(D.Bool) in
(* Helper for list functions : reduce over a list of elements *)
let reduce name typ res f c = begin
C.register1 name (t_list typ) res (fun x ->
List.fold_left f (List.hd x) x) c
|> C.register1 name (t_list (t_list typ)) res (fun x ->
List.fold_left (List.fold_left f) (List.hd (List.hd x)) x);
end in
(* Helper for list functions : fold over a list of elements *)
let fold name t_in t_out f init c = begin
C.register1 name (t_list t_in) t_out (fun x ->
List.fold_left f init x) c
|> C.register1 name (t_list (t_list t_in)) t_out (fun x ->
List.fold_left (List.fold_left f) init x)
end in
let if_: type a. bool -> a -> a -> a = fun a b c -> if a then b else c in
(* Build a date *)
C.register3 "date" (t_int, t_int, t_int) f_date (
fun year month day ->
D.Date.get_julian_day
(D.Num.to_int year)
(D.Num.to_int month)
(D.Num.to_int day)
) catalog
|> CompareNum.register t_int
|> C.register1 "rand" t_unit f_number D.Num.rnd
|> C.register1 "pi" t_unit f_number (fun () -> D.Num.of_float (4. *. atan 1.))
|> C.register1 "sin" t_int f_number (fun x -> D.Num.of_float (sin (D.Num.to_float x)))
|> C.register1 "cos" t_int f_number (fun x -> D.Num.of_float (cos (D.Num.to_float x)))
|> C.register1 "tan" t_int f_number (fun x -> D.Num.of_float (tan (D.Num.to_float x)))
|> C.register1 "atan" t_int f_number (fun x -> D.Num.of_float (atan (D.Num.to_float x)))
|> C.register1 "asin" t_int f_number (fun x -> D.Num.of_float (asin (D.Num.to_float x)))
|> C.register1 "acos" t_int f_number (fun x -> D.Num.of_float (acos (D.Num.to_float x)))
|> C.register1 "sinh" t_int f_number (fun x -> D.Num.of_float (sinh (D.Num.to_float x)))
|> C.register1 "cosh" t_int f_number (fun x -> D.Num.of_float (cosh (D.Num.to_float x)))
|> C.register1 "tanh" t_int f_number (fun x -> D.Num.of_float (tanh (D.Num.to_float x)))
|> C.register2 "atan2" (t_int, t_int)f_number (fun x y ->
D.Num.of_float (atan2 (D.Num.to_float x) (D.Num.to_float y))
)
|> C.register1 "sqrt" t_int f_number (fun x -> D.Num.of_float (sqrt(D.Num.to_float x)))
|> C.register1 "exp" t_int f_number (fun x -> D.Num.of_float (exp (D.Num.to_float x)))
|> C.register1 "ln" t_int f_number (fun x -> D.Num.of_float (log (D.Num.to_float x)))
|> C.register3 "if" (t_bool, t_int, t_int) f_number if_
|> C.register3 "if" (t_bool, t_bool, t_bool) f_bool if_
|> C.register3 "if" (t_bool, t_string, t_string) f_string if_
|> C.register1 "abs" t_int f_number D.Num.abs
|> C.register1 "int" t_int f_number D.Num.floor
|> C.register1 "rounddown" t_int f_number D.Num.round_down
|> C.register1 "round" t_int f_number D.Num.round
|> C.register1 "trim" t_string f_string UTF8.trim
|> C.register1 "right" t_string f_string (fun x -> UTF8.get x (-1))
|> C.register2 "right" (t_string, t_int) f_string (
fun t n ->
let n' = D.Num.to_int n in
UTF8.sub t (-(n')) n'
)
|> C.register1 "left" t_string f_string (fun x -> UTF8.get x 0)
|> C.register2 "left" (t_string, t_int) f_string (
fun t n ->
let n' = D.Num.to_int n in
UTF8.sub t 0 n'
)
|> C.register1 "len" t_string f_number (fun x -> D.Num.of_int (UTF8.length x))
|> C.register1 "lenb" t_string f_number (fun x -> D.Num.of_int (String.length (UTF8.to_utf8string x)))
|> C.register1 "lower" t_string f_string UTF8.lower
|> C.register1 "unicode" t_string f_number (fun x -> D.Num.of_int (UTF8.code x))
|> C.register1 "unichar" t_int f_string (fun x -> UTF8.char (D.Num.to_int x))
|> C.register1 "upper" t_string f_string UTF8.upper
|> C.register3 "substitute" (t_string, t_string, t_string) f_string UTF8.replace
|> C.register2 "rept" (t_string, t_int) f_string (fun t n -> UTF8.repeat (D.Num.to_int n) t)
|> CompareBool.register t_bool
|> C.register1 "true" t_unit f_bool (fun () -> D.Bool.true_)
|> C.register1 "false" t_unit f_bool (fun () -> D.Bool.false_)
|> C.register1 "not" t_bool f_bool D.Bool.not
|> C.register2 "and" (t_bool, t_bool) f_bool D.Bool.and_
|> C.register2 "or" (t_bool, t_bool) f_bool D.Bool.or_
|> C.register2 "xor" (t_bool, t_bool) f_bool D.Bool.neq
|> CompareString.register t_string
|> reduce "min" t_int f_num D.Num.min (* Minimum value from a list *)
|> reduce "max" t_int f_num D.Num.max (* Maximum value from a list *)
|> fold "sum" t_int f_number D.Num.add (D.Num.zero)
|> fold "product" t_int f_number D.Num.mult (D.Num.one)
|> C.register2 "^" (t_int, t_int) f_number D.Num.pow
|> C.register2 "power" (t_int, t_int) f_number D.Num.pow
|> C.register2 "gcd"(t_int, t_int) f_number D.Num.gcd
|> C.register2 "lcm"(t_int, t_int) f_number D.Num.lcm
|> C.register1 "+" t_int f_num (fun x -> x)
|> C.register1 "-" t_int f_num D.Num.neg (* Unary negation *)
|> C.register2 "+" (t_int, t_int) f_num D.Num.add
|> C.register2 "-" (t_int, t_int) f_num D.Num.sub
|> C.register2 "*" (t_int, t_int) f_number D.Num.mult
|> C.register2 "/" (t_int, t_int) f_number D.Num.div
end
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