[cost] Suppress reports on Java access methods

Reviewed By: ngorogiannis

Differential Revision: D15696182

fbshipit-source-id: 2f84789a7

infer/src/IR/Typ.ml

@@ -1005,6 +1005,10 @@ module Procname = struct
         is_c_function name
 
 
+  let is_java_access_method pname =
+    match pname with Java java_pname -> Java.is_access_method java_pname | _ -> false
+
+
   let is_objc_method procname =
     match procname with ObjC_Cpp name -> ObjC_Cpp.is_objc_method name | _ -> false
 

infer/src/IR/Typ.mli

@@ -519,6 +519,8 @@ being the name of the struct, [None] means the parameter is of some other type.
 
   val parameter_of_name : t -> Name.t -> Parameter.t
 
+  val is_java_access_method : t -> bool
+
   val is_objc_method : t -> bool
 
   (** Hash tables with proc names as keys. *)

infer/src/backend/InferPrint.ml

@@ -342,7 +342,7 @@ module JsonCostsPrinter = MakeJsonListPrinter (struct
 
   let to_string {loc; proc_name; cost_opt} =
     match cost_opt with
-    | Some {post} ->
+    | Some {post} when not (Typ.Procname.is_java_access_method proc_name) ->
         let basic_operation_cost = CostDomain.get_operation_cost post in
         let degree_with_term = CostDomain.BasicCost.get_degree_with_term basic_operation_cost in
         let hum =
@@ -367,7 +367,7 @@ module JsonCostsPrinter = MakeJsonListPrinter (struct
           ; hum }
         in
         Some (Jsonbug_j.string_of_cost_item cost_item)
-    | None ->
+    | _ ->
         None
 end)
 

infer/src/checkers/cost.ml

@@ -762,6 +762,8 @@ module Check = struct
 
 
   let check_and_report WorstCaseCost.{costs; reports} proc_desc summary =
+    let pname = Procdesc.get_proc_name proc_desc in
+    if not (Typ.Procname.is_java_access_method pname) then (
       CostDomain.CostKindMap.iter2 ReportConfig.as_map reports
         ~f:(fun kind ReportConfig.{name; threshold} -> function
         | ThresholdReports.Threshold _ ->
@@ -771,7 +773,7 @@ module Check = struct
               ~threshold:(Option.value_exn threshold) ~kind ) ;
       CostDomain.CostKindMap.iter2 ReportConfig.as_map costs
         ~f:(fun _kind ReportConfig.{name; top_and_bottom} cost ->
-        if top_and_bottom then report_top_and_bottom proc_desc summary ~name ~cost )
+          if top_and_bottom then report_top_and_bottom proc_desc summary ~name ~cost ) )
 end
 
 type bound_map = BasicCost.t Node.IdMap.t

infer/tests/build_systems/differential_of_costs_report/costs_summary.json.exp

@@ -1 +1 @@
-{"top":{"current":4,"previous":2},"zero":{"current":0,"previous":0},"degrees":[{"degree":0,"current":7,"previous":7},{"degree":100,"current":2,"previous":4},{"degree":101,"current":4,"previous":0},{"degree":200,"current":3,"previous":4}]}
+{"top":{"current":4,"previous":2},"zero":{"current":0,"previous":0},"degrees":[{"degree":0,"current":7,"previous":6},{"degree":100,"current":2,"previous":4},{"degree":101,"current":4,"previous":0},{"degree":200,"current":2,"previous":4}]}

infer/tests/build_systems/differential_of_costs_report/introduced.exp

@@ -1,5 +1,4 @@
 PERFORMANCE_VARIATION, no_bucket, src/DiffExample.java, DiffExample$1.toString():java.lang.String, 0, [Updated Cost is 16 + 13 ⋅ this.this$0.z + 5 ⋅ this.this$0.z × this.this$0.z (degree is 2),{this.this$0.z},call to void DiffExample.f8(int),call to int DiffExample.f4(int),Loop at line 57,{this.this$0.z},call to void DiffExample.f8(int),Loop at line 79]
-PERFORMANCE_VARIATION, no_bucket, src/DiffExample.java, DiffExample.access$000(int):void, 0, [Updated Cost is 7 + 13 ⋅ x0 + 5 ⋅ x0 × x0 (degree is 2),{x0},call to void DiffExample.f8(int),call to int DiffExample.f4(int),Loop at line 57,{x0},call to void DiffExample.f8(int),Loop at line 79]
 INFINITE_EXECUTION_TIME_CALL, no_bucket, src/DiffExample.java, DiffExample.f1(int):void, 0, [Unbounded loop,Loop at line 38]
 PERFORMANCE_VARIATION, no_bucket, src/DiffExample.java, DiffExample.f4(int):int, 0, [Updated Cost is 6 + 5 ⋅ k (degree is 1),{k},Loop at line 57]
 PERFORMANCE_VARIATION, no_bucket, src/DiffExample.java, DiffExample.f5(java.util.ArrayList):void, 0, [Updated Cost is 2 + list.length × log(list.length) (degree is 1 + 1⋅log),{list.length},Modeled call to Collections.sort,{list.length},Modeled call to Collections.sort]