Squashed 'sequence/' changes from 0d721a6..2691bee

2691bee version 0.5.3
a373739 merge from master
9fc9a31 bugfix: using the same ExitSequence exception in take and is_empty cannot work
a193c54 added a regression test

git-subtree-dir: sequence
git-subtree-split: 2691bee2f68b7c27a1d1360999d0c21026f77ca9

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+## 0.5.3
+
+- bugfix: interaction between `take` and `is_empty`
+
 ## 0.5.2
 
 - bugfix in `take`

META

@@ -1,6 +1,6 @@
 # OASIS_START
-# DO NOT EDIT (digest: f4f3ee8dc8cda763af26a927b88956e6)
+# DO NOT EDIT (digest: 99194977427ba82f5912e81125f6cac0)
-version = "0.5.2"
+version = "0.5.3"
 description = "Simple sequence (iterator) datatype and combinators"
 archive(byte) = "sequence.cma"
 archive(byte, plugin) = "sequence.cma"
@@ -8,7 +8,7 @@ archive(native) = "sequence.cmxa"
 archive(native, plugin) = "sequence.cmxs"
 exists_if = "sequence.cma"
 package "invert" (
- version = "0.5.2"
+ version = "0.5.3"
  description = "Simple sequence (iterator) datatype and combinators"
  requires = "sequence delimcc"
  archive(byte) = "invert.cma"

_oasis

@@ -1,6 +1,6 @@
 OASISFormat: 0.4
 Name:        sequence
-Version:     0.5.2
+Version:     0.5.3
 Homepage:    https://github.com/c-cube/sequence
 Authors:     Simon Cruanes
 License:     BSD-2-clause
@@ -45,7 +45,7 @@ Document sequence
   XOCamlbuildLibraries: sequence
 
 Test all
-  Type:         custom
+  Type:         custom (0.4)
   Command:      make run-tests
   TestTools:    run_tests
   Run$:         flag(tests)

sequence.ml

@@ -319,33 +319,37 @@ let min ?(lt=fun x y -> x < y) seq =
     | Some y -> if lt x y then ret := Some x);
   !ret
 
-exception ExitSequence
+exception ExitHead
 
 let head seq =
   let r = ref None in
   try
-    seq (fun x -> r := Some x; raise ExitSequence); None
+    seq (fun x -> r := Some x; raise ExitHead); None
-  with ExitSequence -> !r
+  with ExitHead -> !r
 
 let head_exn seq =
   match head seq with
   | None -> invalid_arg "Sequence.head_exn"
   | Some x -> x
 
+exception ExitTake
+
 let take n seq k =
   let count = ref 0 in
   try
     seq (fun x ->
-      if !count = n then raise ExitSequence;
+      if !count = n then raise ExitTake;
       incr count;
       k x;
     )
-  with ExitSequence -> ()
+  with ExitTake -> ()
+
+exception ExitTakeWhile
 
 let take_while p seq k =
   try
-    seq (fun x -> if p x then k x else raise ExitSequence)
+    seq (fun x -> if p x then k x else raise ExitTakeWhile)
-  with ExitSequence -> ()
+  with ExitTakeWhile -> ()
 
 let drop n seq k =
   let count = ref 0 in
@@ -362,29 +366,35 @@ let rev seq =
   let l = MList.of_seq seq in
   fun k -> MList.iter_rev k l
 
+exception ExitForall
+
 let for_all p seq =
   try
-    seq (fun x -> if not (p x) then raise ExitSequence);
+    seq (fun x -> if not (p x) then raise ExitForall);
     true
-  with ExitSequence -> false
+  with ExitForall -> false
+
+exception ExitExists
 
 (** Exists there some element satisfying the predicate? *)
 let exists p seq =
   try
-    seq (fun x -> if p x then raise ExitSequence);
+    seq (fun x -> if p x then raise ExitExists);
     false
-  with ExitSequence -> true
+  with ExitExists -> true
 
 let mem ?(eq=(=)) x seq = exists (eq x) seq
 
+exception ExitFind
+
 let find f seq =
   let r = ref None in
   begin try
     seq (fun x -> match f x with
       | None -> ()
-      | Some _ as res -> r := res
+      | Some _ as res -> r := res; raise ExitFind
     );
-  with ExitSequence -> ()
+  with ExitFind -> ()
   end;
   !r
 
@@ -393,17 +403,19 @@ let length seq =
   seq (fun _ -> incr r);
   !r
 
+exception ExitIsEmpty
+
 let is_empty seq =
-  try seq (fun _ -> raise ExitSequence); true
+  try seq (fun _ -> raise ExitIsEmpty); true
-  with ExitSequence -> false
+  with ExitIsEmpty -> false
 
 (** {2 Transform a sequence} *)
 
 let empty2 k = ()
 
 let is_empty2 seq2 =
-  try ignore (seq2 (fun _ _ -> raise ExitSequence)); true
+  try ignore (seq2 (fun _ _ -> raise ExitIsEmpty)); true
-  with ExitSequence -> false
+  with ExitIsEmpty -> false
 
 let length2 seq2 =
   let r = ref 0 in

setup.ml

@@ -1,7 +1,7 @@
 (* setup.ml generated for the first time by OASIS v0.4.4 *)
 
 (* OASIS_START *)
-(* DO NOT EDIT (digest: 3e1599f233d66e02cd17bbb3a1c71d9e) *)
+(* DO NOT EDIT (digest: 1c260750474eb19b8e9212954217b6fd) *)
 (*
    Regenerated by OASIS v0.4.4
    Visit http://oasis.forge.ocamlcore.org for more information and
@@ -6826,7 +6826,7 @@ let setup_t =
           alpha_features = [];
           beta_features = [];
           name = "sequence";
-          version = "0.5.2";
+          version = "0.5.3";
           license =
             OASISLicense.DEP5License
               (OASISLicense.DEP5Unit
@@ -7044,7 +7044,7 @@ let setup_t =
                      cs_plugin_data = []
                   },
                    {
-                      test_type = (`Test, "custom", None);
+                      test_type = (`Test, "custom", Some "0.4");
                       test_command =
                         [(OASISExpr.EBool true, ("make", ["run-tests"]))];
                       test_custom =
@@ -7192,8 +7192,7 @@ let setup_t =
        };
      oasis_fn = Some "_oasis";
      oasis_version = "0.4.4";
-     oasis_digest =
+     oasis_digest = Some "\214\tqh\b\169>\243\237\213\012\180\162\155`L";
-       Some "\142\243\242-\024\139\245\030\1867\186\147D\175\251\192";
      oasis_exec = None;
      oasis_setup_args = [];
      setup_update = false
@@ -7201,6 +7200,6 @@ let setup_t =
 
 let setup () = BaseSetup.setup setup_t;;
 
-# 7205 "setup.ml"
+# 7204 "setup.ml"
 (* OASIS_STOP *)
 let () = setup ();;

tests/test_sequence.ml

@@ -6,7 +6,8 @@ open Sequence.Infix
 
 let pp_ilist l =
   let b = Buffer.create 15 in
-  Format.bprintf b "@[<h>%a@]" (S.pp_seq Format.pp_print_int) (S.of_list l);
+  let fmt = Format.formatter_of_buffer b in
+  Format.fprintf fmt "@[<h>%a@]" (S.pp_seq Format.pp_print_int) (S.of_list l);
   Buffer.contents b
 
 let test_empty () =
@@ -197,6 +198,11 @@ let test_take () =
   OUnit.assert_equal ~printer:pp_ilist [1;2;3;4;5] l;
   ()
 
+let test_regression1 () =
+  let s = S.(take 10 (repeat 1)) in
+  OUnit.assert_bool "not empty" (not (S.is_empty s));
+  ()
+
 let suite =
   "test_sequence" >:::
     [ "test_empty" >:: test_empty;
@@ -225,4 +231,5 @@ let suite =
       "test_hashtbl" >:: test_hashtbl;
       "test_int_range" >:: test_int_range;
       "test_take" >:: test_take;
+      "test_regression1" >:: test_regression1
     ]