chore: repair example

examples/dune

@@ -0,0 +1,8 @@
+
+(executable
+  (name test_sexpr)
+  (libraries iter)
+  (flags :standard -w +a-4-42-44-48-50-58-32-60@8 -safe-string -color always)
+  (ocamlopt_flags :standard -O3 -color always
+                  -unbox-closures -unbox-closures-factor 20)
+  )

examples/jbuild

@@ -1,8 +0,0 @@
-
-(executable
-  ((name test_sexpr)
-   (libraries (sequence))
-   (flags (:standard -w +a-4-42-44-48-50-58-32-60@8 -safe-string -color always))
-   (ocamlopt_flags (:standard -O3 -color always
-                    -unbox-closures -unbox-closures-factor 20))
-  ))

examples/sexpr.ml

@@ -1,5 +1,4 @@
 (*
-Zipperposition: a functional superposition prover for prototyping
 Copyright (C) 2012 Simon Cruanes
 
 This is free software; you can redistribute it and/or
@@ -39,7 +38,7 @@ and iter_list f l = match l with
   | x::l' -> iter f x; iter_list f l'
 
 (** Traverse. This yields a sequence of tokens *)
-let traverse s = Sequence.from_iter (fun k -> iter k s)
+let traverse s = Iter.from_iter (fun k -> iter k s)
 
 (** Returns the same sequence of tokens, but during iteration, if
     the structure of the Sexpr corresponding to the sequence
@@ -47,7 +46,7 @@ let traverse s = Sequence.from_iter (fun k -> iter k s)
     and iteration is stoped *)
 let validate seq =
   let depth = ref 0 in
-  Sequence.map
+  Iter.map
     (fun tok -> match tok with
      | `Open -> incr depth; tok
      | `Close -> if !depth = 0
@@ -80,9 +79,9 @@ let lex input =
         k (`Atom word)
       end
     in
-    Sequence.iter next input
+    Iter.iter next input
   in 
-  Sequence.from_iter seq_fun
+  Iter.from_iter seq_fun
 
 (** Build a Sexpr from a sequence of tokens *)
 let of_seq seq =
@@ -98,7 +97,7 @@ let of_seq seq =
   | _ -> assert false
   in
   (* iterate on the sequence, given an empty initial stack *)
-  let stack = Sequence.fold k [] seq in
+  let stack = Iter.fold k [] seq in
   (* stack should contain exactly one expression *)
   match stack with
   | [`Expr expr] -> expr
@@ -117,7 +116,7 @@ let pp_token formatter token = match token with
 let pp_tokens formatter tokens =
   let first = ref true in
   let last = ref false in
-  Sequence.iter
+  Iter.iter
     (fun token ->
       (match token with
       | `Open -> (if not !first then Format.fprintf formatter " "); first := true
@@ -139,7 +138,7 @@ let pp_sexpr ?(indent=false) formatter s =
 let output_seq name subexpr k =
   k `Open;
   k (`Atom name);
-  Sequence.iter k subexpr;
+  Iter.iter k subexpr;
   k `Close
 
 let output_str name str k =
@@ -258,7 +257,7 @@ let parse_k p tokens k =
     match reduce state with
     | Bottom ->  (* should not happen, unless there are too many tokens *)
       raise (ParseFailure "unexpected ')'")
-    | Push (Return _, cont) ->
+    | Push (Return _, _cont) ->
       assert false (* should be reduced *)
     | Push (Zero f, cont) ->
       let p' = f token in
@@ -285,7 +284,7 @@ let parse_k p tokens k =
     | _ -> state
   in
   (* iterate on the tokens *)
-  ignore (Sequence.fold one_step state tokens)
+  ignore (Iter.fold one_step state tokens)
 
 (** Parse one value *)
 let parse p tokens =
@@ -301,5 +300,5 @@ let parse_seq p tokens =
   let seq_fun k =
     parse_k p tokens (fun x -> k x; `Continue)
   in
-  Sequence.from_iter seq_fun
+  Iter.from_iter seq_fun
 

examples/sexpr.mli

@@ -33,10 +33,10 @@ type token = [`Open | `Close | `Atom of string]
 val iter : (token -> unit) -> t -> unit
   (** Iterate on the S-expression, calling the callback with tokens *)
 
-val traverse : t -> token Sequence.t
+val traverse : t -> token Iter.t
   (** Traverse. This yields a sequence of tokens *)
 
-val validate : token Sequence.t -> token Sequence.t
+val validate : token Iter.t -> token Iter.t
   (** Returns the same sequence of tokens, but during iteration, if
       the structure of the Sexpr corresponding to the sequence
       is wrong (bad parenthesing), Invalid_argument is raised
@@ -44,10 +44,10 @@ val validate : token Sequence.t -> token Sequence.t
 
 (** {2 Text <-> tokens} *)
 
-val lex : char Sequence.t -> token Sequence.t
+val lex : char Iter.t -> token Iter.t
   (** Lex: create a sequence of tokens from the given sequence of chars. *)
 
-val of_seq : token Sequence.t -> t
+val of_seq : token Iter.t -> t
   (** Build a Sexpr from a sequence of tokens, or raise Failure *)
 
 (** {2 Printing} *)
@@ -55,7 +55,7 @@ val of_seq : token Sequence.t -> t
 val pp_token : Format.formatter -> token -> unit
   (** Print a token on the given formatter *)
 
-val pp_tokens : Format.formatter -> token Sequence.t -> unit
+val pp_tokens : Format.formatter -> token Iter.t -> unit
   (** Print a sequence of Sexpr tokens on the given formatter *)
 
 val pp_sexpr : ?indent:bool -> Format.formatter -> t -> unit
@@ -64,7 +64,7 @@ val pp_sexpr : ?indent:bool -> Format.formatter -> t -> unit
 
 (** {2 Serializing} *)
 
-val output_seq : string -> token Sequence.t -> (token -> unit) -> unit
+val output_seq : string -> token Iter.t -> (token -> unit) -> unit
   (** print a pair "(name @,sequence)" *)
 
 val output_str : string -> string -> (token -> unit) -> unit
@@ -124,9 +124,9 @@ val p_bool : bool parser
 val many : 'a parser -> 'a list parser
 val many1 : 'a parser -> 'a list parser
 
-val parse : 'a parser -> token Sequence.t -> 'a
+val parse : 'a parser -> token Iter.t -> 'a
   (** Parses exactly one value from the sequence of tokens. Raises
       ParseFailure if anything goes wrong. *)
 
-val parse_seq : 'a parser -> token Sequence.t -> 'a Sequence.t
+val parse_seq : 'a parser -> token Iter.t -> 'a Iter.t
   (** Parses a sequence of values *)

examples/test_sexpr.ml

@@ -3,16 +3,16 @@
 
 (** print a list of items using the printing function *)
 let pp_list ?(sep=", ") pp_item formatter l = 
-  Sequence.pp_seq ~sep pp_item formatter (Sequence.of_list l)
+  Iter.pp_seq ~sep pp_item formatter (Iter.of_list l)
 
 (** Set of integers *)
 module ISet = Set.Make(struct type t = int let compare = compare end)
 let iset = (module ISet : Set.S with type elt = int and type t = ISet.t)
 
 module OrderedString = struct type t = string let compare = compare end
-module SMap = Sequence.Map.Make(OrderedString)
+module SMap = Iter.Map.Make(OrderedString)
 
-let my_map = SMap.of_seq (Sequence.of_list ["1", 1; "2", 2; "3", 3; "answer", 42])
+let my_map = SMap.of_seq (Iter.of_list ["1", 1; "2", 2; "3", 3; "answer", 42])
 
 let sexpr = "(foo bar (bazz quux hello 42) world (zoo foo bar (1 2 (3 4))))"
 
@@ -35,9 +35,9 @@ let rec sexpr_of_term t =
   let f t k = match t with
     | Var i -> Sexpr.output_str "var" (string_of_int i) k
     | Lambda t' -> Sexpr.output_seq "lambda" (sexpr_of_term t') k
-    | Apply (t1, t2) -> Sexpr.output_seq "apply" (Sequence.append (sexpr_of_term t1) (sexpr_of_term t2)) k
+    | Apply (t1, t2) -> Sexpr.output_seq "apply" (Iter.append (sexpr_of_term t1) (sexpr_of_term t2)) k
     | Const s -> Sexpr.output_str "const" s k
-  in Sequence.from_iter (f t)
+  in Iter.from_iter (f t)
 
 let term_parser =
   let open Sexpr in
@@ -68,61 +68,61 @@ let test_term () =
 let _ =
   (* lists *)
   let l = [0;1;2;3;4;5;6] in
-  let l' = Sequence.to_list
-    (Sequence.filter (fun x -> x mod 2 = 0) (Sequence.of_list l)) in
-  let l'' = Sequence.to_list
-    (Sequence.take 3 (Sequence.drop 1 (Sequence.of_list l))) in
+  let l' = Iter.to_list
+    (Iter.filter (fun x -> x mod 2 = 0) (Iter.of_list l)) in
+  let l'' = Iter.to_list
+    (Iter.take 3 (Iter.drop 1 (Iter.of_list l))) in
   let h = Hashtbl.create 3 in
   for i = 0 to 5 do
     Hashtbl.add h i (i*i);
   done;
-  let l2 = Sequence.to_list
-    (Sequence.map (fun (x, y) -> (string_of_int x) ^ " -> " ^ (string_of_int y))
-      (Sequence.of_hashtbl h))
+  let l2 = Iter.to_list
+    (Iter.map (fun (x, y) -> (string_of_int x) ^ " -> " ^ (string_of_int y))
+      (Iter.of_hashtbl h))
   in
-  let l3 = Sequence.to_list (Sequence.rev (Sequence.int_range ~start:0 ~stop:42)) in
+  let l3 = Iter.to_list (Iter.rev (Iter.int_range ~start:0 ~stop:42)) in
   let set = List.fold_left (fun set x -> ISet.add x set) ISet.empty [4;3;100;42] in
-  let l4 = Sequence.to_list (Sequence.of_set iset set) in
+  let l4 = Iter.to_list (Iter.of_set iset set) in
   Format.printf "l=@[<h>[%a]@]@." (pp_list Format.pp_print_int) l;
   Format.printf "l'=@[<h>[%a]@]@." (pp_list Format.pp_print_int) l';
   Format.printf "l''=@[<h>[%a]@]@." (pp_list Format.pp_print_int) l'';
   Format.printf "l2=@[<h>[%a]@]@." (pp_list Format.pp_print_string) l2;
   Format.printf "l3=@[<h>[%a]@]@." (pp_list Format.pp_print_int) l3;
-  Format.printf "s={@[<h>%a@]}@." (Sequence.pp_seq Format.pp_print_int) (Sequence.of_set iset set);
+  Format.printf "s={@[<h>%a@]}@." (Iter.pp_seq Format.pp_print_int) (Iter.of_set iset set);
   Format.printf "l4=@[<h>[%a]@]@." (pp_list Format.pp_print_int) l4;
-  Format.printf "l3[:5]+l4=@[<h>[%a]@]@." (Sequence.pp_seq Format.pp_print_int)
-    (Sequence.of_array
-      (Sequence.to_array (Sequence.append
-        (Sequence.take 5 (Sequence.of_list l3)) (Sequence.of_list l4))));
+  Format.printf "l3[:5]+l4=@[<h>[%a]@]@." (Iter.pp_seq Format.pp_print_int)
+    (Iter.of_array
+      (Iter.to_array (Iter.append
+        (Iter.take 5 (Iter.of_list l3)) (Iter.of_list l4))));
   (* sequence, persistent, etc *)
-  let seq = Sequence.int_range ~start:0 ~stop:100000 in
-  let seq' = Sequence.persistent seq in
-  let stream = Sequence.to_stream seq' in
+  let seq = Iter.int_range ~start:0 ~stop:100000 in
+  let seq' = Iter.persistent seq in
+  let stream = Iter.to_stream seq' in
   Format.printf "test length [0..100000]: persistent1 %d, stream %d, persistent2 %d"
-    (Sequence.length seq') (Sequence.length (Sequence.of_stream stream)) (Sequence.length seq');
+    (Iter.length seq') (Iter.length (Iter.of_stream stream)) (Iter.length seq');
   (* maps *)
   Format.printf "@[<h>map: %a@]@."
-    (Sequence.pp_seq (fun formatter (k,v) -> Format.fprintf formatter "\"%s\" -> %d" k v))
+    (Iter.pp_seq (fun formatter (k,v) -> Format.fprintf formatter "\"%s\" -> %d" k v))
     (SMap.to_seq my_map);
-  let module MyMapSeq = Sequence.Map.Adapt(Map.Make(OrderedString)) in
-  let my_map' = MyMapSeq.of_seq (Sequence.of_list ["1", 1; "2", 2; "3", 3; "answer", 42]) in
+  let module MyMapSeq = Iter.Map.Adapt(Map.Make(OrderedString)) in
+  let my_map' = MyMapSeq.of_seq (Iter.of_list ["1", 1; "2", 2; "3", 3; "answer", 42]) in
   Format.printf "@[<h>map: %a@]@."
-    (Sequence.pp_seq (fun formatter (k,v) -> Format.fprintf formatter "\"%s\" -> %d" k v))
+    (Iter.pp_seq (fun formatter (k,v) -> Format.fprintf formatter "\"%s\" -> %d" k v))
     (MyMapSeq.to_seq my_map');
   (* sum *)
   let n = 1000000 in
-  let sum = Sequence.fold (+) 0 (Sequence.take n (Sequence.repeat 1)) in
+  let sum = Iter.fold (+) 0 (Iter.take n (Iter.repeat 1)) in
   Format.printf "%dx1 = %d@." n sum;
   assert (n=sum);
   (* sexpr *)
-  let s = Sexpr.of_seq (Sexpr.lex (Sequence.of_str sexpr)) in
-  let s = Sexpr.of_seq (Sequence.map
-    (function | `Atom s -> `Atom (String.capitalize s) | tok -> tok)
+  let s = Sexpr.of_seq (Sexpr.lex (Iter.of_str sexpr)) in
+  let s = Sexpr.of_seq (Iter.map
+    (function | `Atom s -> `Atom (String.capitalize_ascii s) | tok -> tok)
     (Sexpr.traverse s))
   in
   Format.printf "@[<hov2>transform @[<h>%s@] into @[<h>%a@]@]@." sexpr (Sexpr.pp_sexpr ~indent:false) s;
   Format.printf "@[<hv2> cycle:%a@]@." Sexpr.pp_tokens
-    (Sequence.concat (Sequence.take 10 (Sequence.repeat (Sexpr.traverse s))));
+    (Iter.concat (Iter.take 10 (Iter.repeat (Sexpr.traverse s))));
   (* sexpr parsing/printing *)
   for i = 0 to 20 do
     Format.printf "%d-th term test@." i;