anil.recoil.org
RFC6901 JSON Pointer implementation in OCaml using jsont
toplevel
+26
-4
src/top/jsont_pointer_top.ml
+26
-4
src/top/jsont_pointer_top.ml
···
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Usage in toplevel:
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#require "jsont-pointer.top";;
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-
#install_printer Jsont_pointer_top.nav_printer;;
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-
#install_printer Jsont_pointer_top.append_printer;;
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-
#install_printer Jsont_pointer_top.json_printer;;
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-
#install_printer Jsont_pointer_top.error_printer;;
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*)
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let nav_printer ppf (p : Jsont_pointer.nav Jsont_pointer.t) =
···
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let error_printer ppf (e : Jsont.Error.t) =
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Format.pp_print_string ppf (Jsont.Error.to_string e)
···
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Usage in toplevel:
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#require "jsont-pointer.top";;
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+
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+
Printers are automatically installed when the library is loaded.
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*)
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let nav_printer ppf (p : Jsont_pointer.nav Jsont_pointer.t) =
···
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let error_printer ppf (e : Jsont.Error.t) =
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Format.pp_print_string ppf (Jsont.Error.to_string e)
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+
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+
(* Automatic printer installation *)
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+
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let printers =
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[ "Jsont_pointer_top.nav_printer";
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"Jsont_pointer_top.append_printer";
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"Jsont_pointer_top.json_printer";
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"Jsont_pointer_top.error_printer" ]
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+
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+
let eval_string
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?(print_outcome = false) ?(err_formatter = Format.err_formatter) str =
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+
let lexbuf = Lexing.from_string str in
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let phrase = !Toploop.parse_toplevel_phrase lexbuf in
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Toploop.execute_phrase print_outcome err_formatter phrase
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+
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let rec install_printers = function
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| [] -> true
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| printer :: rest ->
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let cmd = Printf.sprintf "#install_printer %s;;" printer in
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eval_string cmd && install_printers rest
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+
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let () =
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if not (install_printers printers) then
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Format.eprintf "Problem installing jsont-pointer printers@."
+2
-6
src/top/jsont_pointer_top.mli
+2
-6
src/top/jsont_pointer_top.mli
···
1
(** Toplevel printers for {!Jsont_pointer}, {!Jsont.json}, and {!Jsont.Error.t}.
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3
-
To use in the OCaml toplevel or utop:
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{[
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#require "jsont-pointer.top";;
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-
#install_printer Jsont_pointer_top.nav_printer;;
7
-
#install_printer Jsont_pointer_top.append_printer;;
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-
#install_printer Jsont_pointer_top.json_printer;;
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-
#install_printer Jsont_pointer_top.error_printer;;
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]}
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-
After installation, JSON Pointers will display their structure:
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{[
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# Jsont_pointer.of_string_nav "/foo/0";;
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- : Jsont_pointer.nav Jsont_pointer.t = [Mem "foo"; Nth 0]
···
1
(** Toplevel printers for {!Jsont_pointer}, {!Jsont.json}, and {!Jsont.Error.t}.
2
3
+
Printers are automatically installed when the library is loaded:
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{[
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#require "jsont-pointer.top";;
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]}
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+
After loading, JSON Pointers will display their structure:
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{[
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# Jsont_pointer.of_string_nav "/foo/0";;
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- : Jsont_pointer.nav Jsont_pointer.t = [Mem "foo"; Nth 0]