Update demos/calc-incremental-dune.

demos/calc-incremental-dune/Makefile

 .PHONY: all clean test
 
-DUNE       := jbuilder
+DUNE       := dune
 EXECUTABLE := calc.exe
 
 all:

demos/calc-incremental-dune/README

-This demo is identical to the "calc-incremental" demo,
-but uses dune (a.k.a. jbuilder)
-instead of ocamlbuild.

demos/calc-incremental-dune/README.md

+This demo is identical to the `calc-incremental` demo
+but uses dune instead of ocamlbuild.

demos/calc-incremental-dune/calc.ml

@@ -14,7 +14,7 @@ module I =
 
 let rec loop lexbuf (checkpoint : int I.checkpoint) =
   match checkpoint with
-  | I.InputNeeded env ->
+  | I.InputNeeded _env ->
       (* The parser needs a token. Request one from the lexer,
          and offer it to the parser, which will produce a new
          checkpoint. Then, repeat. *)
@@ -27,7 +27,7 @@ let rec loop lexbuf (checkpoint : int I.checkpoint) =
   | I.AboutToReduce _ ->
       let checkpoint = I.resume checkpoint in
       loop lexbuf checkpoint
-  | I.HandlingError env ->
+  | I.HandlingError _env ->
       (* The parser has suspended itself because of a syntax error. Stop. *)
       Printf.fprintf stderr
         "At offset %d: syntax error.\n%!"
@@ -40,6 +40,8 @@ let rec loop lexbuf (checkpoint : int I.checkpoint) =
          we stop as soon as the parser reports [HandlingError]. *)
       assert false
 
+let _ = loop (* silence OCaml's unused-value warning about [loop] *)
+
 (* -------------------------------------------------------------------------- *)
 
 (* The above loop is shown for explanatory purposes, but can in fact be
@@ -89,7 +91,6 @@ let rec repeat channel =
   process optional_line;
   if continue then
     repeat channel
-  
+
 let () =
   repeat (from_channel stdin)
-

demos/calc-incremental-dune/dune

+(ocamllex
+  (modules lexer)
+)
+
+(menhir
+  (modules parser)
+  (flags ("--table"))
+)
+
+(executable
+ (name calc)
+ (libraries menhirLib)
+)

demos/calc-incremental-dune/dune-project

+(lang dune 1.4)
+(using menhir 2.0)

demos/calc-incremental-dune/jbuild

-(jbuild_version 1)
-
-(ocamllex (lexer))
-
-(menhir (
-  (modules (parser))
-  (flags ("--table"))
-))
-
-(executable (
-   (name calc)
-   (libraries (menhirLib))
-))

demos/calc-incremental/calc.ml

@@ -14,7 +14,7 @@ module I =
 
 let rec loop lexbuf (checkpoint : int I.checkpoint) =
   match checkpoint with
-  | I.InputNeeded env ->
+  | I.InputNeeded _env ->
       (* The parser needs a token. Request one from the lexer,
          and offer it to the parser, which will produce a new
          checkpoint. Then, repeat. *)
@@ -27,7 +27,7 @@ let rec loop lexbuf (checkpoint : int I.checkpoint) =
   | I.AboutToReduce _ ->
       let checkpoint = I.resume checkpoint in
       loop lexbuf checkpoint
-  | I.HandlingError env ->
+  | I.HandlingError _env ->
       (* The parser has suspended itself because of a syntax error. Stop. *)
       Printf.fprintf stderr
         "At offset %d: syntax error.\n%!"
@@ -40,6 +40,8 @@ let rec loop lexbuf (checkpoint : int I.checkpoint) =
          we stop as soon as the parser reports [HandlingError]. *)
       assert false
 
+let _ = loop (* silence OCaml's unused-value warning about [loop] *)
+
 (* -------------------------------------------------------------------------- *)
 
 (* The above loop is shown for explanatory purposes, but can in fact be
@@ -89,7 +91,6 @@ let rec repeat channel =
   process optional_line;
   if continue then
     repeat channel
-  
+
 let () =
   repeat (from_channel stdin)
-