[linters] Save the linters file in the linter definition

Reviewed By: ddino

Differential Revision: D4689093

fbshipit-source-id: bd4e706

infer/src/clang/cFrontend_checkers_main.ml

@@ -11,9 +11,7 @@ open! IStd
 open Lexing
 open Ctl_lexer
 
-(* Parse the file with linters definitions, and it returns a list
-   of checkers in the form of pairs (condition, issue_desc) *)
-let parse_ctl_file linters_files =
+let parse_ctl_file linters_def_file channel : CFrontend_errors.linter list =
   let print_position _ lexbuf =
     let pos = lexbuf.lex_curr_p in
     Logging.err "%s:%d:%d" pos.pos_fname
@@ -29,21 +27,26 @@ let parse_ctl_file linters_files =
                      \n########################################################\n@."
           print_position lexbuf;
         exit (-1) in
-  List.iter ~f:(fun fn ->
-      Logging.out "Loading linters rules from %s\n" fn;
-      let inx = open_in fn in
-      let lexbuf = Lexing.from_channel inx in
-      lexbuf.lex_curr_p <- { lexbuf.lex_curr_p with pos_fname = fn };
-      (match parse_with_error lexbuf with
+  let lexbuf = Lexing.from_channel channel in
+  lexbuf.lex_curr_p <- { lexbuf.lex_curr_p with pos_fname = linters_def_file };
+  match parse_with_error lexbuf with
   | Some parsed_checkers ->
       Logging.out "#### Start Expanding checkers #####\n";
       let exp_checkers = CFrontend_errors.expand_checkers parsed_checkers in
       Logging.out "#### Checkers Expanded #####\n";
       if Config.debug_mode then List.iter ~f:CTL.print_checker exp_checkers;
-           CFrontend_errors.make_condition_issue_desc_pair exp_checkers;
-       | None -> Logging.out "No linters found.\n");
-      In_channel.close inx) linters_files
+      CFrontend_errors.create_parsed_linters linters_def_file exp_checkers
+  | None -> Logging.out "No linters found.\n";[]
 
+(* Parse the files with linters definitions, and it returns a list of linters *)
+let parse_ctl_files linters_def_files : CFrontend_errors.linter list =
+  let collect_parsed_linters linters_def_file linters =
+    Logging.out "Loading linters rules from %s\n" linters_def_file;
+    let in_channel = open_in linters_def_file in
+    let parsed_linters = parse_ctl_file linters_def_file in_channel in
+    In_channel.close in_channel;
+    List.append parsed_linters linters in
+  List.fold_right ~f:collect_parsed_linters ~init:[] linters_def_files
 
 let rec get_responds_to_selector stmt =
   let open Clang_ast_t in
@@ -209,7 +212,8 @@ let store_issues source_file =
 
 let do_frontend_checks trans_unit_ctx ast =
   try
-    parse_ctl_file Config.linters_def_file;
+    let parsed_linters = parse_ctl_files Config.linters_def_file in
+    CFrontend_errors.parsed_linters := parsed_linters;
     let source_file = trans_unit_ctx.CFrontend_config.source_file in
     Logging.out "Start linting file %a@\n" SourceFile.pp source_file;
     match ast with

infer/src/clang/cFrontend_errors.ml

@@ -9,6 +9,12 @@
 
 open! IStd
 
+type linter = {
+  condition : CTL.t;
+  issue_desc : CIssue.issue_desc;
+  def_file : string option;
+}
+
 let single_to_multi checker =
   fun ctx an ->
     let condition, issue_desc_opt = checker ctx an in
@@ -35,8 +41,9 @@ let stmt_single_checkers_list =
 
 let stmt_checkers_list = List.map ~f:single_to_multi stmt_single_checkers_list
 
-(* List of checkers that will be filled after parsing them from a file *)
-let checkers_decl_stmt = ref []
+(* List of checkers that will be filled after parsing them from
+   input the linter def files *)
+let parsed_linters = ref []
 
 let evaluate_place_holder ph an =
   match ph with
@@ -92,8 +99,8 @@ let string_to_issue_mode m =
       (Logging.err "\n[ERROR] Mode %s does not exist. Please specify ON/OFF\n" s;
        assert false)
 
-(** Convert a parsed checker in a pair (condition, issue_desc) *)
-let make_condition_issue_desc_pair checkers =
+(** Convert a parsed checker in list of linters *)
+let create_parsed_linters linters_def_file checkers : linter list =
   let open CIssue in
   let open CTL in
   let open Ctl_parser_types in
@@ -107,7 +114,7 @@ let make_condition_issue_desc_pair checkers =
       severity = Exceptions.Kwarning;
       mode = CIssue.On;
     } in
-    let issue, condition = List.fold ~f:(fun (issue', cond') d  ->
+    let issue_desc, condition = List.fold ~f:(fun (issue', cond') d  ->
         match d with
         | CSet (s, phi) when String.equal s report_when_const ->
             issue', phi
@@ -124,9 +131,9 @@ let make_condition_issue_desc_pair checkers =
       Logging.out "\nMaking condition and issue desc for checker '%s'\n"
         c.name;
       Logging.out "\nCondition =\n     %a\n" CTL.Debug.pp_formula condition;
-      Logging.out "\nIssue_desc = %a\n" CIssue.pp_issue issue);
-    condition, issue in
-  checkers_decl_stmt := List.map ~f:do_one_checker checkers
+      Logging.out "\nIssue_desc = %a\n" CIssue.pp_issue issue_desc);
+    {condition; issue_desc; def_file = Some linters_def_file} in
+  List.map ~f:do_one_checker checkers
 
 
 (* expands use of let defined formula id in checkers with their definition *)
@@ -232,18 +239,18 @@ let invoke_set_of_hard_coded_checkers_an context (an : Ctl_parser_types.ast_node
     ) checkers
 
 (* Calls the set of checkers parsed from files (if any) *)
-let invoke_set_of_parsed_checkers_an context (an : Ctl_parser_types.ast_node) =
+let invoke_set_of_parsed_checkers_an parsed_linters context (an : Ctl_parser_types.ast_node) =
   let key = match an with
     | Decl dec -> CAst_utils.generate_key_decl dec
     | Stmt st -> CAst_utils.generate_key_stmt st in
-  List.iter ~f:(fun (condition, issue_desc) ->
-      if CIssue.should_run_check issue_desc.CIssue.mode &&
-         CTL.eval_formula condition an context then
+  List.iter ~f:(fun (linter : linter) ->
+      if CIssue.should_run_check linter.issue_desc.CIssue.mode &&
+         CTL.eval_formula linter.condition an context then
         let loc = CFrontend_checkers.location_from_an context an in
-        fill_issue_desc_info_and_log context an key issue_desc loc
-    ) !checkers_decl_stmt
+        fill_issue_desc_info_and_log context an key linter.issue_desc loc
+    ) parsed_linters
 
 (* We decouple the hardcoded checkers from the parsed ones *)
 let invoke_set_of_checkers_on_node context an =
-  invoke_set_of_parsed_checkers_an context an;
+  invoke_set_of_parsed_checkers_an !parsed_linters context an;
   invoke_set_of_hard_coded_checkers_an context an

infer/src/clang/cFrontend_errors.mli

@@ -9,6 +9,14 @@
 
 open! IStd
 
+type linter = {
+  condition : CTL.t;
+  issue_desc : CIssue.issue_desc;
+  def_file : string option;
+}
+
+(* List of checkers that will be filled after parsing them from a file *)
+val parsed_linters : linter list ref
 
 (* Module for warnings detected at translation time by the frontend *)
 
@@ -17,7 +25,6 @@ val invoke_set_of_checkers_on_node : CLintersContext.context -> Ctl_parser_types
 
 val expand_checkers : CTL.ctl_checker list -> CTL.ctl_checker list
 
-val make_condition_issue_desc_pair :
-  CTL.ctl_checker list -> unit
+val create_parsed_linters : string -> CTL.ctl_checker list -> linter list
 
 val remove_new_lines : string -> string