From 8d23a029c57be92a7aed0f18d9fcf1c931c1038e Mon Sep 17 00:00:00 2001
From: Sébastien Dailly <sebastien@dailly.me>
Date: Mon, 7 Feb 2022 16:40:45 +0100
Subject: Reformat

---
 editor/actions/to_markdown.ml | 404 +++++++++++++++++++-----------------------
 1 file changed, 183 insertions(+), 221 deletions(-)

(limited to 'editor/actions/to_markdown.ml')

diff --git a/editor/actions/to_markdown.ml b/editor/actions/to_markdown.ml
index 1920219..3f0934a 100755
--- a/editor/actions/to_markdown.ml
+++ b/editor/actions/to_markdown.ml
@@ -2,14 +2,13 @@ module Js = Js_of_ocaml.Js
 module PM = Prosemirror
 module App = Editor_app
 
-
 type buffer = Jstr.t Js.js_array Js.t
-type f = (buffer -> PM.Model.node Js.t -> unit)
 
-let render_mark_type = object%js
+type f = buffer -> PM.Model.node Js.t -> unit
 
-  method code
-    = fun (mark:PM.Model.mark Js.t) (buffer: buffer) ->
+let render_mark_type =
+  object%js
+    method code (mark : PM.Model.mark Js.t) (buffer : buffer) =
       ignore mark;
       (* There may be a bug here, if the code itself contains `` .
 
@@ -18,82 +17,68 @@ let render_mark_type = object%js
 
          https://spec.commonmark.org/0.29/#code-span *)
       ignore @@ buffer##push (Jstr.v "``");
-      fun (buffer:buffer) ->
-        ignore @@ buffer##push (Jstr.v "``")
+      fun (buffer : buffer) -> ignore @@ buffer##push (Jstr.v "``")
 
-  method strong
-    = fun (mark:PM.Model.mark Js.t) (buffer: buffer) ->
+    method strong (mark : PM.Model.mark Js.t) (buffer : buffer) =
       ignore mark;
       ignore @@ buffer##push (Jstr.v "**");
-      fun (buffer:buffer) ->
-        ignore @@ buffer##push (Jstr.v "**")
+      fun (buffer : buffer) -> ignore @@ buffer##push (Jstr.v "**")
 
-  method em
-    = fun (mark:PM.Model.mark Js.t) (buffer: buffer) ->
+    method em (mark : PM.Model.mark Js.t) (buffer : buffer) =
       ignore mark;
       ignore @@ buffer##push (Jstr.v "*");
-      fun (buffer:buffer) ->
-        ignore @@ buffer##push (Jstr.v "*")
+      fun (buffer : buffer) -> ignore @@ buffer##push (Jstr.v "*")
 
-  (**
+    (**
      https://spec.commonmark.org/0.29/#links
   *)
-  method link
-    = fun (mark:PM.Model.mark Js.t) (buffer: buffer) ->
+    method link (mark : PM.Model.mark Js.t) (buffer : buffer) =
       ignore @@ buffer##push (Jstr.v "[");
-      fun (buffer:buffer) ->
+      fun (buffer : buffer) ->
         ignore @@ buffer##push (Jstr.v "](");
-        let href_opt = PM.O.get (mark##.attrs) "href" in
-        Option.iter
-          (fun href -> ignore @@ buffer##push (href))
-          href_opt;
-        ignore @@ buffer##push (Jstr.v ")");
+        let href_opt = PM.O.get mark##.attrs "href" in
+        Option.iter (fun href -> ignore @@ buffer##push href) href_opt;
+        ignore @@ buffer##push (Jstr.v ")")
+  end
 
-end
 
 type render_state =
   { level : int
-  ; apply_indent : bool }
+  ; apply_indent : bool
+  }
 
 (* Check if a property exists in the object with the name of
    node type, and if so, call the appropriate method.
 *)
-let process_node obj (state:render_state) buffer node =
+let process_node obj (state : render_state) buffer node =
   let name = node##._type##.name in
   match Jv.find' (Jv.Id.to_jv obj) name with
-  | None ->
-    Brr.Console.(log
-                   [ Jstr.v "Unknow type"
-                   ; name
-                   ; node ])
+  | None -> Brr.Console.(log [ Jstr.v "Unknow type"; name; node ])
   | Some _ ->
-
-    Jv.call'
-      (Jv.Id.to_jv obj)
-      name
-      [| Jv.Id.to_jv state
-       ; Jv.Id.to_jv buffer
-       ; Jv.Id.to_jv node
-      |]
-
-let render_node_type = object%js (_this)
-
-  (* https://spec.commonmark.org/0.29/#thematic-breaks *)
-  method horizontal_rule_
-    = fun (state:render_state) (buffer: buffer) (node:PM.Model.node Js.t) ->
+      Jv.call'
+        (Jv.Id.to_jv obj)
+        name
+        [| Jv.Id.to_jv state; Jv.Id.to_jv buffer; Jv.Id.to_jv node |]
+
+
+(** Create a js object with a function for each node type. Each function may
+    call [process_node] recursively for each nested nodes *)
+let render_node_type =
+  object%js (_this)
+    (* https://spec.commonmark.org/0.29/#thematic-breaks *)
+    method horizontal_rule_
+        (state : render_state) (buffer : buffer) (node : PM.Model.node Js.t) =
       ignore state;
       ignore node;
-      if state.level <> 0 then (
+      if state.level <> 0
+      then (
         ignore @@ buffer##push (Jstr.v "\n");
-        ignore @@ buffer##push (Jstr.(repeat state.level (v " ") ));
-        ignore @@ buffer##push (Jstr.v "---\n");
-      ) else (
-        ignore @@ buffer##push (Jstr.v "\n---\n")
-      )
-
-  method text
-    = fun (state:render_state) (buffer: buffer) (node:PM.Model.node Js.t) ->
+        ignore @@ buffer##push Jstr.(repeat state.level (v " "));
+        ignore @@ buffer##push (Jstr.v "---\n") )
+      else ignore @@ buffer##push (Jstr.v "\n---\n")
 
+    method text
+        (state : render_state) (buffer : buffer) (node : PM.Model.node Js.t) =
       ignore state;
       (* Execute each mark as an environment like
          \begin{environement}
@@ -101,194 +86,171 @@ let render_node_type = object%js (_this)
          \end{environment}
 
          this way, nested marks are working correctly
-
       *)
-      let post_render = node##.marks##reduce_init
-          (Js.wrap_callback @@ fun (acc:(buffer -> unit) Js.js_array Js.t) (mark: PM.Model.mark Js.t) (_:int) _ ->
-           let name = mark##._type##.name in
-           match Jv.find' (Jv.Id.to_jv render_mark_type) name with
-           | None ->
-             Brr.Console.(
-               log [ Jstr.v "Unknown mark type"
-                   ; name]);
-             acc
-           | Some _ ->
-             (* Add the element as first (lifo) *)
-             ignore @@ acc##unshift
-               (Jv.call'
-                  (Jv.Id.to_jv render_mark_type)
-                  name
-                  [| Jv.Id.to_jv mark
-                   ; Jv.Id.to_jv buffer
-                  |]);
-             acc)
+      let post_render =
+        node##.marks##reduce_init
+          ( Js.wrap_callback
+          @@ fun (acc : (buffer -> unit) Js.js_array Js.t)
+                 (mark : PM.Model.mark Js.t)
+                 (_ : int)
+                 _ ->
+          let name = mark##._type##.name in
+          match Jv.find' (Jv.Id.to_jv render_mark_type) name with
+          | None ->
+              Brr.Console.(log [ Jstr.v "Unknown mark type"; name ]);
+              acc
+          | Some _ ->
+              (* Add the element as first (lifo) *)
+              ignore
+              @@ acc##unshift
+                   (Jv.call'
+                      (Jv.Id.to_jv render_mark_type)
+                      name
+                      [| Jv.Id.to_jv mark; Jv.Id.to_jv buffer |] );
+              acc )
           (new%js Js.array_empty)
       in
       let () =
-        if node##.isText == Js._true then
-          Js.Opt.iter
-            node##.text
-            (fun content -> ignore @@ buffer##push content) in
+        if node##.isText == Js._true
+        then
+          Js.Opt.iter node##.text (fun content ->
+              ignore @@ buffer##push content )
+      in
       post_render##forEach
-        (Js.wrap_callback @@ fun (call:(buffer -> unit)) (_:int) _ -> call buffer)
-
-  method heading
-    = fun (state:render_state) (buffer: buffer) (node:PM.Model.node Js.t) ->
+        ( Js.wrap_callback
+        @@ fun (call : buffer -> unit) (_ : int) _ -> call buffer )
 
-      let h_level:int = node##.attrs##.level in
-      ignore @@ buffer##push (Jstr.(repeat h_level (v "#") ));
+    method heading
+        (state : render_state) (buffer : buffer) (node : PM.Model.node Js.t) =
+      let h_level : int = node##.attrs##.level in
+      ignore @@ buffer##push Jstr.(repeat h_level (v "#"));
       ignore @@ buffer##push (Jstr.v " ");
       node##.content##forEach
-        ( Js.wrap_meth_callback @@ fun _ node ~offset ~index ->
-          let _ = offset
-          and _ = index in
-          process_node _this state buffer node);
-      ignore @@ buffer##push (Jstr.(v "\n\n" ))
-
-  method paragraph
-    = fun (state:render_state) (buffer: buffer) (node:PM.Model.node Js.t) ->
+        ( Js.wrap_meth_callback
+        @@ fun _ node ~offset ~index ->
+        let _ = offset
+        and _ = index in
+        process_node _this state buffer node );
+      ignore @@ buffer##push Jstr.(v "\n\n")
+
+    method paragraph
+        (state : render_state) (buffer : buffer) (node : PM.Model.node Js.t) =
       node##.content##forEach
-        ( Js.wrap_meth_callback @@ fun _ node ~offset ~index ->
-          ignore offset;
-          ignore index;
-          if state.apply_indent then (
-            ignore @@ buffer##push (Jstr.(repeat state.level (v " ") ))
-          );
-          process_node _this state buffer node);
-      ignore @@ buffer##push (Jstr.(v "\n" ))
-
-  method list_item_
-    = fun (state:render_state) (buffer: buffer) (node:PM.Model.node Js.t) ->
-
+        ( Js.wrap_meth_callback
+        @@ fun _ node ~offset ~index ->
+        ignore offset;
+        ignore index;
+        if state.apply_indent
+        then ignore @@ buffer##push Jstr.(repeat state.level (v " "));
+        process_node _this state buffer node );
+      ignore @@ buffer##push Jstr.(v "\n")
+
+    method list_item_
+        (state : render_state) (buffer : buffer) (node : PM.Model.node Js.t) =
       node##.content##forEach
-        ( Js.wrap_meth_callback @@ fun _ node ~offset ~index ->
-          ignore offset;
-          (* The first element in the list should be correctly indented, but if
-              there is many elements inside the list (paragraph) we have to
-              apply the indentation again.
-          *)
-          let new_state = { state with apply_indent = index <> 0 } in
-          process_node _this new_state buffer node);
-
-  method bullet_list_
-    = fun (state:render_state) (buffer: buffer) (node:PM.Model.node Js.t) ->
+        ( Js.wrap_meth_callback
+        @@ fun _ node ~offset ~index ->
+        ignore offset;
+        (* The first element in the list should be correctly indented, but if
+            there is many elements inside the list (paragraph) we have to
+            apply the indentation again.
+        *)
+        let new_state = { state with apply_indent = index <> 0 } in
+        process_node _this new_state buffer node )
+
+    method bullet_list_
+        (state : render_state) (buffer : buffer) (node : PM.Model.node Js.t) =
       node##.content##forEach
-        ( Js.wrap_meth_callback @@ fun _ node ~offset ~index ->
-          ignore offset;
-          if state.level <> 0 && (index <> 0 || state.apply_indent) then (
-            ignore @@ buffer##push (Jstr.(repeat state.level (v " ") ))
-          );
-          ignore @@ buffer##push (Jstr.v "- ");
-          let new_state =
-            { level = state.level + 2
-            ; apply_indent = false
-            } in
-          process_node _this new_state buffer node);
-      if (state.level == 0) then
-        ignore @@ buffer##push (Jstr.(v "\n" ))
-
-  method ordered_list_
-    = fun (state:render_state) (buffer: buffer) (node:PM.Model.node Js.t) ->
+        ( Js.wrap_meth_callback
+        @@ fun _ node ~offset ~index ->
+        ignore offset;
+        if state.level <> 0 && (index <> 0 || state.apply_indent)
+        then ignore @@ buffer##push Jstr.(repeat state.level (v " "));
+        ignore @@ buffer##push (Jstr.v "- ");
+        let new_state = { level = state.level + 2; apply_indent = false } in
+        process_node _this new_state buffer node );
+      if state.level == 0 then ignore @@ buffer##push Jstr.(v "\n")
+
+    method ordered_list_
+        (state : render_state) (buffer : buffer) (node : PM.Model.node Js.t) =
       node##.content##forEach
-        ( Js.wrap_meth_callback @@ fun _ node ~offset ~index ->
-          ignore offset;
-          if state.level <> 0 && (index <> 0 || state.apply_indent) then (
-            ignore @@ buffer##push (Jstr.(repeat state.level (v " ") ))
-          );
-          let num = Jstr.of_int (1 + index) in
-          let prefix = Jstr.( num + (v ". ")) in
-          ignore @@ buffer##push prefix;
-          let new_state =
-            { level = state.level + (Jstr.length prefix)
-            ; apply_indent = false
-            } in
-          process_node _this new_state buffer node);
-      if (state.level == 0) then
-        ignore @@ buffer##push (Jstr.(v "\n" ))
-
-  (* https://spec.commonmark.org/0.29/#fenced-code-blocks *)
-  method code_block_
-    = fun (state:render_state) (buffer: buffer) (node:PM.Model.node Js.t) ->
+        ( Js.wrap_meth_callback
+        @@ fun _ node ~offset ~index ->
+        ignore offset;
+        if state.level <> 0 && (index <> 0 || state.apply_indent)
+        then ignore @@ buffer##push Jstr.(repeat state.level (v " "));
+        let num = Jstr.of_int (1 + index) in
+        let prefix = Jstr.(num + v ". ") in
+        ignore @@ buffer##push prefix;
+        let new_state =
+          { level = state.level + Jstr.length prefix; apply_indent = false }
+        in
+        process_node _this new_state buffer node );
+      if state.level == 0 then ignore @@ buffer##push Jstr.(v "\n")
+
+    (* https://spec.commonmark.org/0.29/#fenced-code-blocks *)
+    method code_block_
+        (state : render_state) (buffer : buffer) (node : PM.Model.node Js.t) =
       ignore @@ buffer##push (Jstr.v "```\n");
       node##.content##forEach
-        ( Js.wrap_meth_callback @@ fun _ node ~offset ~index ->
-          ignore index;
-          ignore offset;
-          let new_state =
-            { state with
-              apply_indent = true
-            } in
-          process_node _this new_state buffer node);
-      if state.apply_indent then (
-        ignore @@ buffer##push (Jstr.(repeat state.level (v " ") ))
-      );
+        ( Js.wrap_meth_callback
+        @@ fun _ node ~offset ~index ->
+        ignore index;
+        ignore offset;
+        let new_state = { state with apply_indent = true } in
+        process_node _this new_state buffer node );
+      if state.apply_indent
+      then ignore @@ buffer##push Jstr.(repeat state.level (v " "));
       ignore @@ buffer##push (Jstr.v "\n```\n")
 
-  (** https://spec.commonmark.org/0.29/#block-quotes *)
-  method blockquote
-    = fun (state:render_state) (buffer: buffer) (node:PM.Model.node Js.t) ->
+    (** https://spec.commonmark.org/0.29/#block-quotes *)
+    method blockquote
+        (state : render_state) (buffer : buffer) (node : PM.Model.node Js.t) =
       node##.content##forEach
-        ( Js.wrap_meth_callback @@ fun _ node ~offset ~index ->
-          ignore index;
-          ignore offset;
-          ignore @@ buffer##push (Jstr.v "> ");
-          let new_state =
-            { level = state.level + 2
-            ; apply_indent = false
-            } in
-          process_node _this new_state buffer node);
-      ignore @@ buffer##push (Jstr.v "\n");
-end
-
+        ( Js.wrap_meth_callback
+        @@ fun _ node ~offset ~index ->
+        ignore index;
+        ignore offset;
+        ignore @@ buffer##push (Jstr.v "> ");
+        let new_state = { level = state.level + 2; apply_indent = false } in
+        process_node _this new_state buffer node );
+      ignore @@ buffer##push (Jstr.v "\n")
+  end
 
 
 module ToMarkdown = struct
-
   type t = PM.t
 
-  let process
-    : t -> State.t -> State.t
-    = fun pm state ->
-
-      let view = state.State.view in
-      let root_node = view##.state##.doc in
-      let buffer = new%js Js.array_empty in
-
-      Brr.Console.(log [Obj.magic root_node]);
-
-      let () = root_node##forEach
-          (Js.wrap_meth_callback @@ fun _ node ~offset ~index ->
-           let _ = offset
-           and _ = index in
-
-           let init =
-             { level = 0
-             ; apply_indent = false } in
-
-
-           process_node render_node_type init buffer node
-          ) in
-
-      (* Concatenate the array into a single string *)
-      let js_markdown = buffer##join (Js.string "") in
-      let markdown = Js.to_string js_markdown in
-      Brr.Console.(log [js_markdown]);
-      let doc = Omd.of_string markdown in
-      let new_doc = Of_markdown.FromMarkdown.parse view pm doc in
-
-      Brr.Console.(log
-      [ Jstr.v "Are the same ?"
-          ; (Obj.magic @@ Js_of_ocaml.Js.bool (root_node = new_doc))
-      ]);
-
-      (* The function does not actually update the state, and return it
-         unchanged *)
-      state
-
+  let process : t -> State.t -> State.t =
+   fun pm state ->
+    let view = state.State.view in
+    let root_node = view##.state##.doc in
+    let buffer = new%js Js.array_empty in
+    Brr.Console.(log [ Obj.magic root_node ]);
+    let () =
+      root_node##forEach
+        ( Js.wrap_meth_callback
+        @@ fun _ node ~offset ~index ->
+        let _ = offset
+        and _ = index in
+        let init = { level = 0; apply_indent = false } in
+        process_node render_node_type init buffer node )
+    in
+    (* Concatenate the array into a single string *)
+    let js_markdown = buffer##join (Js.string "") in
+    let markdown = Js.to_string js_markdown in
+    Brr.Console.(log [ js_markdown ]);
+    let doc = Omd.of_string markdown in
+    let new_doc = Of_markdown.FromMarkdown.parse view pm doc in
+    Brr.Console.(
+      log
+        [ Jstr.v "Are the same ?"
+        ; Obj.magic @@ Js_of_ocaml.Js.bool (root_node = new_doc)
+        ]);
+    (* The function does not actually update the state, and return it
+       unchanged *)
+    state
 end
 
 (** Create a new element *)
-let create
-  : PM.t -> App.event
-  = fun pm ->
-      App.dispatch (module ToMarkdown) pm
+let create : PM.t -> App.event = fun pm -> App.dispatch (module ToMarkdown) pm
-- 
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