Add support for @SuppressWarnings for Gradle and Ant projects.

Summary:public
Instead of using the collection of suppress warnings annotations to filter out the errors while generating the error reports, we just add this SuppressWarnings at translation time, like any other annotations, and the reporting functions in the Reporting module will just skip the errors when the method is annotated with SuppressWarnings.

This allows us to have a suppress warnings mechanism that is independant from the integration with the build system.

Reviewed By: sblackshear

Differential Revision: D3012395

fb-gh-sync-id: 35f5f9b
shipit-source-id: 35f5f9b

examples/android_hello/app/src/main/java/infer/other/MainActivity.java

@@ -23,4 +23,9 @@ public class MainActivity extends ActionBarActivity {
     source().toString();
   }
 
+  @SuppressWarnings("infer")
+  void shouldNotBeReported() {
+    source().toString();
+  }
+
 }

infer/lib/python/inferlib/analyze.py

@@ -419,9 +419,6 @@ class AnalyzerWrapper(object):
             '-procs', procs_report,
             '-analyzer', self.args.analyzer
         ]
-        if self.javac is not None and self.javac.annotations_out is not None:
-            infer_print_options += [
-                '-local_config', self.javac.annotations_out]
         if self.args.debug or self.args.debug_exceptions:
             infer_print_options.append('-with_infer_src_loc')
         exit_status = subprocess.check_call(

infer/lib/python/inferlib/jwlib.py

@@ -246,6 +246,9 @@ class AnalyzerWithFrontendWrapper(analyze.AnalyzerWrapper):
         if os.path.isfile(config.MODELS_JAR):
             infer_cmd += ['-models', config.MODELS_JAR]
 
+        if self.javac.annotations_out is not None:
+            infer_cmd += ['-local_config', self.javac.annotations_out]
+
         infer_cmd.append('-no-static_final')
 
         if self.args.debug:

infer/src/backend/inferconfig.ml

@@ -98,6 +98,11 @@ module type MATCHABLE_JSON = sig
   val json_key : string
 end
 
+module type Matcher = sig
+  type matcher = DB.source_file -> Procname.t -> bool
+  val load_matcher : string -> matcher
+end
+
 module FileOrProcMatcher = functor (M : MATCHABLE_JSON) ->
 struct
 
@@ -305,17 +310,6 @@ let load_filters analyzer =
     with Sys_error _ -> None
   else None
 
-(** parse autogenerated list of procedures/classes with Java @SuppressWarnings annotations. This
-    list is generated by an annotation parser than runs with the javac compilation step and saved in
-    the [local_config] file *)
-let make_proc_filter_from_local_config () =
-  let filter = match !local_config with
-    | Some f ->
-        (try ProcMatcher.load_matcher f
-         with Yojson.Json_error _ -> ProcMatcher.default_matcher)
-    | None -> ProcMatcher.default_matcher in
-  fun pname -> not (filter DB.source_file_empty pname)
-
 
 let filters_from_inferconfig inferconfig : filters =
   let path_filter =
@@ -340,17 +334,15 @@ let filters_from_inferconfig inferconfig : filters =
     proc_filter = default_proc_filter;
   }
 
-(* Create filters based on .inferconfig.*)
+(* Create filters based on .inferconfig *)
 (* The environment varialble NO_PATH_FILTERING disables path filtering. *)
 let create_filters analyzer =
   Config.project_root := Some (Sys.getcwd ());
   if Config.from_env_variable "NO_PATH_FILTERING" then do_not_filter
   else
-    let filters =
-      match load_filters (Utils.string_of_analyzer analyzer) with
-      | None -> do_not_filter
-      | Some inferconfig -> filters_from_inferconfig inferconfig in
-    { filters with proc_filter = make_proc_filter_from_local_config () }
+    match load_filters (Utils.string_of_analyzer analyzer) with
+    | None -> do_not_filter
+    | Some inferconfig -> filters_from_inferconfig inferconfig
 
 (* This function loads and list the path that are being filtered by the analyzer. The results *)
 (* are of the form: path/to/file.java -> {infer, eradicate} meaning that analysis results will *)

infer/src/backend/inferconfig.mli

@@ -36,15 +36,16 @@ val do_not_filter : filters
 (** Create filters based on the config file *)
 val create_filters : analyzer -> filters
 
-module NeverReturnNull : sig
+module type Matcher = sig
   type matcher = DB.source_file -> Procname.t -> bool
   val load_matcher : string -> matcher
 end
 
-module SkipTranslationMatcher : sig
-  type matcher = DB.source_file -> Procname.t -> bool
-  val load_matcher : string -> matcher
-end
+module NeverReturnNull : Matcher
+
+module SkipTranslationMatcher : Matcher
+
+module ProcMatcher : Matcher
 
 (** Load the config file and list the files to report on *)
 val test: unit -> unit

infer/src/backend/inferprint.ml

@@ -180,11 +180,6 @@ let arg_desc =
         Some "dir",
         "Path to the .inferconfig file"
         ;
-        "-local_config",
-        Arg.String (fun s -> Inferconfig.local_config := Some s),
-        Some "Path",
-        "Path to local config file"
-        ;
         "-with_infer_src_loc",
         Arg.Set reports_include_ml_loc,
         None,

infer/src/backend/reporting.ml

@@ -54,7 +54,15 @@ let log_issue
     ?(ltr = None)
     ?(pre = None)
     exn =
+  let should_suppress_warnings summary =
+    if !Config.curr_language = Config.C_CPP then false
+    else
+      let annotated_signature =
+        Annotations.get_annotated_signature summary.Specs.attributes in
+      let ret_annotation, _ = annotated_signature.Annotations.ret in
+      Annotations.ia_is_suppress_warnings ret_annotation in
   match Specs.get_summary proc_name with
+  | Some summary when should_suppress_warnings summary -> ()
   | Some summary ->
       let err_log = summary.Specs.attributes.ProcAttributes.err_log in
       log_issue_from_errlog err_kind err_log ~loc:loc ~node_id:node_id

infer/src/backend/sil.mli

@@ -805,7 +805,7 @@ val pp_const: printenv -> Format.formatter -> const -> unit
 (** Pretty print an item annotation. *)
 val pp_item_annotation : Format.formatter -> item_annotation -> unit
 
-val item_annotation_to_string : item_annotation -> string 
+val item_annotation_to_string : item_annotation -> string
 
 (** Pretty print a method annotation. *)
 val pp_method_annotation : string -> Format.formatter -> method_annotation -> unit

infer/src/checkers/annotations.ml

@@ -112,6 +112,7 @@ let expensive = "Expensive"
 let performance_critical = "PerformanceCritical"
 let no_allocation = "NoAllocation"
 let ignore_allocations = "IgnoreAllocations"
+let suppress_warnings = "SuppressWarnings"
 
 let ia_is_nullable ia =
   ia_ends_with ia nullable
@@ -162,6 +163,10 @@ let ia_is_no_allocation ia =
 let ia_is_ignore_allocations ia =
   ia_ends_with ia ignore_allocations
 
+let ia_is_suppress_warnings ia =
+  ia_ends_with ia suppress_warnings
+
+
 type annotation =
   | Nullable
   | Present

infer/src/checkers/annotations.mli

@@ -14,6 +14,7 @@ val suppressLint : string
 val expensive : string
 val performance_critical : string
 val no_allocation : string
+val suppress_warnings : string
 
 type annotation =
   | Nullable
@@ -75,6 +76,7 @@ val ia_is_expensive : Sil.item_annotation -> bool
 val ia_is_performance_critical : Sil.item_annotation -> bool
 val ia_is_no_allocation : Sil.item_annotation -> bool
 val ia_is_ignore_allocations : Sil.item_annotation -> bool
+val ia_is_suppress_warnings : Sil.item_annotation -> bool
 
 val ia_iter : (Sil.annotation -> unit) -> Sil.item_annotation -> unit
 

infer/src/java/jAnnotation.ml

@@ -10,6 +10,40 @@
 
 open Javalib_pack
 
+
+let suppress_warnings_lookup = ref None
+
+
+let load_suppress_warnings_lookup () =
+  let default_matcher = fun _ -> false in
+  let matcher =
+    match !Inferconfig.local_config with
+    | Some f ->
+        (try
+           let m = Inferconfig.ProcMatcher.load_matcher f in
+           (m DB.source_file_empty)
+         with Yojson.Json_error _ ->
+           default_matcher)
+    | None -> failwith "Local config expected!" in
+  suppress_warnings_lookup := Some matcher
+
+
+let is_suppress_warnings_annotated proc_name =
+  let matcher =
+    let () =
+      match !suppress_warnings_lookup with
+      | None ->
+          load_suppress_warnings_lookup ()
+      | Some _ -> () in
+    Option.get !suppress_warnings_lookup in
+  matcher proc_name
+
+
+let suppress_warnings =
+  ({ Sil.class_name = Annotations.suppress_warnings;
+     Sil.parameters = ["infer"] },
+   true)
+
 (** Translate an annotation. *)
 let translate a : Sil.annotation =
   let class_name = JBasics.cn_name a.JBasics.kind in
@@ -35,9 +69,13 @@ let translate_item avlist : Sil.item_annotation =
 
 
 (** Translate a method annotation. *)
-let translate_method ann : Sil.method_annotation =
+let translate_method proc_name ann : Sil.method_annotation =
   let global_ann = ann.Javalib.ma_global in
   let param_ann = ann.Javalib.ma_parameters in
-  let ret_item = translate_item global_ann in
+  let ret_item =
+    let base_annotations = translate_item global_ann in
+    if is_suppress_warnings_annotated proc_name then
+      suppress_warnings :: base_annotations
+    else base_annotations in
   let param_items = IList.map translate_item param_ann in
   ret_item, param_items

infer/src/java/jAnnotation.mli

@@ -15,4 +15,4 @@ open Javalib_pack
 val translate_item : (JBasics.annotation * Javalib.visibility) list -> Sil.item_annotation
 
 (** Translate a method annotation. *)
-val translate_method : Javalib.method_annotations -> Sil.method_annotation
+val translate_method : Procname.t -> Javalib.method_annotations -> Sil.method_annotation

infer/src/java/jMain.ml

@@ -62,6 +62,11 @@ let arg_desc =
       None,
       "Set the path to the javac verbose output"
       ;
+      "-local_config",
+      Arg.String (fun s -> Inferconfig.local_config := Some s),
+      Some "Path",
+      "Path to local config file"
+      ;
     ] in
   Arg.create_options_desc false "Parsing Options" desc
 

infer/src/java/jTrans.ml

@@ -275,8 +275,10 @@ let create_local_procdesc program linereader cfg tenv node m =
       try
         match m with
         | Javalib.AbstractMethod am -> (* create a procdesc with empty body *)
-            let formals = formals_from_signature program tenv cn ms (JTransType.get_method_kind m) in
-            let method_annotation = JAnnotation.translate_method am.Javalib.am_annotations in
+            let formals =
+              formals_from_signature program tenv cn ms (JTransType.get_method_kind m) in
+            let method_annotation =
+              JAnnotation.translate_method proc_name am.Javalib.am_annotations in
             let procdesc =
               let proc_attributes =
                 { (ProcAttributes.default proc_name Config.Java) with
@@ -300,7 +302,8 @@ let create_local_procdesc program linereader cfg tenv node m =
             Cfg.Procdesc.set_exit_node procdesc exit_node
         | Javalib.ConcreteMethod cm when is_java_native cm ->
             let formals = formals_from_signature program tenv cn ms (JTransType.get_method_kind m) in
-            let method_annotation = JAnnotation.translate_method cm.Javalib.cm_annotations in
+            let method_annotation =
+              JAnnotation.translate_method proc_name cm.Javalib.cm_annotations in
             let proc_attributes =
               { (ProcAttributes.default proc_name Config.Java) with
                 ProcAttributes.access = trans_access cm.Javalib.cm_access;
@@ -319,7 +322,8 @@ let create_local_procdesc program linereader cfg tenv node m =
               let loc = (get_location impl 0 JContext.Normal cn) in
               fix_method_definition_line linereader proc_name loc in
             let loc_exit = (get_location impl (Array.length (JBir.code impl) - 1) JContext.Normal cn) in
-            let method_annotation = JAnnotation.translate_method cm.Javalib.cm_annotations in
+            let method_annotation =
+              JAnnotation.translate_method proc_name cm.Javalib.cm_annotations in
             update_constr_loc cn ms loc_start;
             update_init_loc cn ms loc_exit;
             let procdesc =

infer/tests/ant_report.json

@@ -659,11 +659,6 @@
     "file": "codetoanalyze/java/infer/ResourceLeaks.java",
     "procedure": "void ResourceLeaks.serverSocketNotClosed()"
   },
-  {
-    "bug_type": "NULL_DEREFERENCE",
-    "file": "codetoanalyze/java/infer/NullPointerExceptions.java",
-    "procedure": "void NullPointerExceptions.shouldNotReportNPE()"
-  },
   {
     "bug_type": "NULL_DEREFERENCE",
     "file": "codetoanalyze/java/infer/NullPointerExceptions.java",