[nullsafe] unused functor argument -> get rid of module-ification

Summary:
OCaml 4.10.0 flagged that the `Extension` functor argument was unused.
Delete it and remove one layer of module in the file too now that it
doesn't need to be a functor.

Reviewed By: mityal

Differential Revision: D20669652

fbshipit-source-id: 089043d7d

infer/src/nullsafe/eradicate.ml

@@ -16,18 +16,6 @@ module Payload = SummaryPayload.Make (struct
   let field = Payloads.Fields.nullsafe
 end)
 
-(** Type for a module that provides a main callback function *)
-module type CallBackT = sig
-  val callback : TypeCheck.checks -> Callbacks.proc_callback_t
-end
-
-(** Extension to the type checker. *)
-module type ExtensionT = sig
-  val update_payloads : NullsafeSummary.t option -> Payloads.t -> Payloads.t
-end
-
-(** Create a module with the toplevel callback. *)
-module MkCallback (Extension : ExtensionT) : CallBackT = struct
 let callback1 tenv find_canonical_duplicate calls_this checks idenv curr_pname curr_pdesc
     annotated_signature linereader proc_loc : bool * TypeState.t option =
   let add_formal typestate (param_signature : AnnotatedSignature.param_signature) =
@@ -53,8 +41,8 @@ module MkCallback (Extension : ExtensionT) : CallBackT = struct
     List.fold ~f:add_formal ~init:typestate_empty annotated_signature.AnnotatedSignature.params
   in
   (* Check the nullable flag computed for the return value and report inconsistencies. *)
-    let check_return find_canonical_duplicate exit_node final_typestate annotated_signature loc :
-        unit =
+  let check_return find_canonical_duplicate exit_node final_typestate annotated_signature loc : unit
+      =
     let AnnotatedSignature.{ret_annotated_type} = annotated_signature.AnnotatedSignature.ret in
     let ret_pvar = Procdesc.get_ret_var curr_pdesc in
     let ret_range = TypeState.lookup_pvar ret_pvar final_typestate in
@@ -162,8 +150,8 @@ module MkCallback (Extension : ExtensionT) : CallBackT = struct
         && checks.TypeCheck.eradicate
       then (
         let typestates_for_curr_constructor_and_all_initializer_methods =
-            Initializers.final_initializer_typestates_lazy tenv proc_name proc_desc
-              get_procs_in_file typecheck_proc
+          Initializers.final_initializer_typestates_lazy tenv proc_name proc_desc get_procs_in_file
+            typecheck_proc
         in
         let typestates_for_all_constructors_incl_current =
           Initializers.final_constructor_typestates_lazy tenv proc_name get_procs_in_file
@@ -173,8 +161,7 @@ module MkCallback (Extension : ExtensionT) : CallBackT = struct
           proc_desc start_node ~nullsafe_mode:annotated_signature.AnnotatedSignature.nullsafe_mode
           ~typestates_for_curr_constructor_and_all_initializer_methods
           ~typestates_for_all_constructors_incl_current proc_loc ;
-          if Config.eradicate_verbose then L.result "Final Typestate@\n%a@." TypeState.pp typestate
-          )
+        if Config.eradicate_verbose then L.result "Final Typestate@\n%a@." TypeState.pp typestate )
     in
     match typestate_opt with None -> () | Some typestate -> do_typestate typestate
   in
@@ -227,8 +214,8 @@ module MkCallback (Extension : ExtensionT) : CallBackT = struct
       (* The main method - during this the actual analysis will happen and TypeErr will be populated with
          issues (and some of them - reported).
       *)
-        analyze_procedure tenv proc_name proc_desc calls_this checks callback_args
-          annotated_signature linereader loc ;
+      analyze_procedure tenv proc_name proc_desc calls_this checks callback_args annotated_signature
+        linereader loc ;
       (* Collect issues that were detected during analysis and put them in summary for further processing *)
       let issues = TypeErr.get_errors () |> List.map ~f:(fun (issues, _) -> issues) in
       (* Report errors of "farall" class - those could not be reported during analysis phase. *)
@@ -236,27 +223,15 @@ module MkCallback (Extension : ExtensionT) : CallBackT = struct
         (EradicateCheckers.report_error tenv)
         ~nullsafe_mode:annotated_signature.nullsafe_mode proc_desc ;
       Payload.update_summary NullsafeSummary.{issues} summary
-end
-
-(* MkCallback *)
-
-module EmptyExtension : ExtensionT = struct
-  let update_payloads new_summary (payloads : Payloads.t) = {payloads with nullsafe= new_summary}
-end
-
-module Main = struct
-  module Callback = MkCallback (EmptyExtension)
 
-  let callback = Callback.callback
-end
 
 let proc_callback =
   let checks = {TypeCheck.eradicate= true; check_ret_type= []} in
-  Main.callback checks
+  callback checks
 
 
 let file_callback = FileLevelAnalysis.analyze_file
 
 let callback_check_return_type check_return_type callback_args =
   let checks = {TypeCheck.eradicate= false; check_ret_type= [check_return_type]} in
-  Main.callback checks callback_args
+  callback checks callback_args

infer/src/nullsafe/eradicate.mli

@@ -19,13 +19,3 @@ val file_callback : Callbacks.file_callback_t
 val callback_check_return_type : TypeCheck.check_return_type -> Callbacks.proc_callback_t
 (** For checkers that explore eradicate/nullsafe infra, but not part of nullsafe.Annot Call the
     given check_return_type at the end of every procedure. *)
-
-(** Type for a module that provides a main callback function *)
-module type CallBackT = sig
-  val callback : TypeCheck.checks -> Callbacks.proc_callback_t
-end
-
-(** Extension to the type checker. *)
-module type ExtensionT = sig
-  val update_payloads : NullsafeSummary.t option -> Payloads.t -> Payloads.t
-end