fix compatibility

Signed-off-by: Paul-Elliot <peada@free.fr>

Author: panglesd

src/document/generator.ml

@@ -1763,7 +1763,7 @@ module Make (Syntax : SYNTAX) = struct
         | None -> None
       in
       let search_assets =
-        List.filter_map
+        Utils.filter_map
           (function
             | `Resolved (`Identifier id) ->
                 Some Url.(from_path @@ Path.from_identifier id)

src/document/utils.ml

@@ -1,5 +1,13 @@
 let option_of_result = function Result.Ok x -> Some x | Result.Error _ -> None
 
+let filter_map f =
+  let rec aux accu = function
+    | [] -> List.rev accu
+    | x :: l -> (
+        match f x with None -> aux accu l | Some v -> aux (v :: accu) l)
+  in
+  aux []
+
 let rec flatmap ?sep ~f = function
   | [] -> []
   | [ x ] -> f x

src/document/utils.mli

@@ -1,3 +1,4 @@
+val filter_map : ('a -> 'b option) -> 'a list -> 'b list
 val option_of_result : ('a, 'b) Result.result -> 'a option
 val flatmap : ?sep:'a list -> f:('b -> 'a list) -> 'b list -> 'a list
 val skip_until : p:('a -> bool) -> 'a list -> 'a list

src/odoc/indexing.ml

@@ -1,9 +1,11 @@
 open Odoc_search
 open Or_error
 
+let map_result f = function Ok v -> Ok (f v) | Error _ as e -> e
+
 let handle_file file ~unit ~page =
   Odoc_file.load file
-  |> Result.map @@ fun unit' ->
+  |> map_result @@ fun unit' ->
      match unit' with
      | { Odoc_file.content = Unit_content (unit', _); _ } when not unit'.hidden
        ->

src/search/entry.ml

@@ -1,6 +1,15 @@
 open Odoc_model.Lang
 open Odoc_model.Paths
 
+let list_concat_map f l =
+  let rec aux f acc = function
+    | [] -> List.rev acc
+    | x :: l ->
+        let xs = f x in
+        aux f (List.rev_append xs acc) l
+  in
+  aux f [] l
+
 type type_decl_entry = {
   canonical : Path.Type.t option;
   equation : TypeDecl.Equation.t;
@@ -118,14 +127,14 @@ let entry_of_field id_parent params (field : TypeDecl.Field.t) =
   entry ~id:field.id ~doc:field.doc ~kind
 
 let rec entries_of_docs id (d : Odoc_model.Comment.docs) =
-  List.concat_map (entries_of_doc id) d
+  list_concat_map (entries_of_doc id) d
 
 and entries_of_doc id d =
   match d.value with
   | `Paragraph _ -> [ entry ~id ~doc:[ d ] ~kind:(Doc Paragraph) ]
   | `Tag _ -> []
   | `List (_, ds) ->
-      List.concat_map (entries_of_docs id) (ds :> Odoc_model.Comment.docs list)
+      list_concat_map (entries_of_docs id) (ds :> Odoc_model.Comment.docs list)
   | `Heading (_, lbl, _) -> [ entry ~id:lbl ~doc:[ d ] ~kind:(Doc Heading) ]
   | `Modules _ -> []
   | `Code_block (_, _, o) ->
@@ -171,8 +180,9 @@ let entries_of_item id (x : Odoc_model.Fold.item) =
       [ entry ~id:v.id ~doc:v.doc ~kind ]
   | Exception exc ->
       let res =
-        Option.value exc.res
-          ~default:(TypeExpr.Constr (Odoc_model.Predefined.exn_path, []))
+        match exc.res with
+        | None -> TypeExpr.Constr (Odoc_model.Predefined.exn_path, [])
+        | Some x -> x
       in
       let kind = Exception { args = exc.args; res } in
       [ entry ~id:exc.id ~doc:exc.doc ~kind ]

src/search/generator.ml

@@ -4,6 +4,8 @@ open Odoc_model
 open Lang
 open Printf
 
+let map_option f = function Some x -> Some (f x) | None -> None
+
 let type_from_path : Paths.Path.Type.t -> string =
  fun path ->
   match path with
@@ -79,19 +81,19 @@ let display_constructor_args args =
       | _ :: _ :: _ -> Some TypeExpr.(Tuple args)
       | [ arg ] -> Some arg
       | _ -> None)
-      |> Option.map type_expr
+      |> map_option type_expr
   | TypeDecl.Constructor.Record fields -> Some (Render.text_of_record fields)
 
 let constructor_rhs ~args ~res =
   let args = display_constructor_args args in
-  let res = Option.map type_expr res in
+  let res = map_option type_expr res in
   match (args, res) with
   | None, None -> ""
   | None, Some res -> " : " ^ res
   | Some args, None -> " of " ^ args
   | Some args, Some res -> " : " ^ args ^ " -> " ^ res
 
-let field_rhs Entry.{ mutable_ = _; type_; parent_type = _ } =
+let field_rhs ({ mutable_ = _; type_; parent_type = _ } : Entry.field_entry) =
   " : " ^ type_expr type_
 
 let typedecl_params ?(delim = `parens) params =
@@ -121,7 +123,7 @@ let typedecl_params ?(delim = `parens) params =
 let type_decl_constraint (typ, typ') =
   "constraint" ^ " " ^ type_expr typ ^ " = " ^ type_expr typ'
 
-let typedecl_params_of_entry Entry.{ kind; _ } =
+let typedecl_params_of_entry ({ kind; _ } : Entry.t) =
   match kind with
   | Entry.TypeDecl { canonical = _; equation; representation = _ } ->
       typedecl_params equation.params
@@ -144,12 +146,10 @@ let typedecl_repr ~private_ (repr : TypeDecl.Representation.t) =
       |> String.concat " | "
   | Record record -> Render.text_of_record record
 
-let typedecl_rhs Entry.{ equation; representation; _ } =
+let typedecl_rhs ({ equation; representation; _ } : Entry.type_decl_entry) =
   let TypeDecl.Equation.{ private_; manifest; constraints; _ } = equation in
   let repr =
-    representation
-    |> Option.map (typedecl_repr ~private_)
-    |> Option.value ~default:""
+    match representation with Some r -> typedecl_repr ~private_ r | None -> ""
   in
   let manifest =
     match manifest with None -> "" | Some typ -> " = " ^ type_expr typ
@@ -162,7 +162,8 @@ let typedecl_rhs Entry.{ equation; representation; _ } =
   in
   match repr ^ manifest ^ constraints with "" -> None | r -> Some r
 
-let constructor_rhs Entry.{ args; res } = constructor_rhs ~args ~res:(Some res)
+let constructor_rhs ({ args; res } : Entry.constructor_entry) =
+  constructor_rhs ~args ~res:(Some res)
 
 (** Kinds *)
 
@@ -264,12 +265,12 @@ let html_of_doc doc =
 let html_string_of_doc doc =
   doc |> html_of_doc |> Format.asprintf "%a" (Html.pp_elt ())
 let html_of_entry (entry : Entry.t) =
-  let Entry.{ id; doc; kind } = entry in
+  let ({ id; doc; kind } : Entry.t) = entry in
   let rhs = rhs_of_kind kind in
   let prefix_name, name = title_of_id id in
   let doc = html_string_of_doc doc in
   let kind = string_of_kind kind in
   let typedecl_params = typedecl_params_of_entry entry in
   html_of_strings ~kind ~prefix_name ~name ~rhs ~doc ~typedecl_params
 
-let with_html entry = Entry.{ entry; html = html_of_entry entry }
+let with_html entry : Entry.with_html = { entry; html = html_of_entry entry }