Make stacktrace and stacktree line number an int option.

Reviewed By: sblackshear

Differential Revision: D3718014

fbshipit-source-id: 1c93757

infer/src/backend/crashcontext.ml

@@ -13,12 +13,14 @@ module F = Format
 module L = Logging
 
 let frame_id_of_stackframe frame =
+  let loc_str = match frame.Stacktrace.line_num with
+    | None -> frame.Stacktrace.file_str
+    | Some line -> F.sprintf "%s:%d" frame.Stacktrace.file_str line in
   F.sprintf
-    "%s.%s(%s:%d)"
+    "%s.%s(%s)"
     frame.Stacktrace.class_str
     frame.Stacktrace.method_str
-    frame.Stacktrace.file_str
-    frame.Stacktrace.line_num
+    loc_str
 
 let frame_id_of_summary stacktree =
   let short_name = IList.hd
@@ -27,8 +29,10 @@ let frame_id_of_summary stacktree =
   | None ->
       failwith "Attempted to take signature of a frame without location \
                 information. This is undefined."
-  | Some loc ->
-      F.sprintf "%s(%s:%d)" short_name (Filename.basename loc.file) loc.line
+  | Some { line = Some line_num; file } ->
+      F.sprintf "%s(%s:%d)" short_name (Filename.basename file) line_num
+  | Some { file } ->
+      F.sprintf "%s(%s)" short_name (Filename.basename file)
 
 let stracktree_of_frame frame =
   { Stacktree_j.method_name = F.sprintf

infer/src/checkers/BoundedCallTree.ml

@@ -61,7 +61,7 @@ let stacktree_of_pdesc
   let frame_loc =
     Some { Stacktree_j.location_type = location_type;
            file = DB.source_file_to_string loc.Location.file;
-           line = loc.Location.line;
+           line = Some loc.Location.line;
            blame_range = [line_range_of_pdesc pdesc] } in
   { Stacktree_j.method_name = Procname.to_unique_id procname;
     location = frame_loc;

infer/src/checkers/stacktree.atd

@@ -6,7 +6,7 @@ type line_range_t = {
 type location_t = {
   location_type : string;
   file : string;
-  line : int;
+  ?line : int option;
   blame_range : line_range_t list;
 }
 

infer/src/harness/stacktrace.ml

@@ -17,7 +17,7 @@ type frame = {
   class_str : string;
   method_str : string;
   file_str : string;
-  line_num : int;
+  line_num : int option;
 }
 
 type t = {
@@ -44,8 +44,11 @@ let make_frame class_str method_str file_str line_num =
 
 let frame_matches_location frame_obj loc =
   let lfname = DB.source_file_to_string loc.Location.file in
-  Utils.string_is_suffix frame_obj.file_str lfname &&
-  frame_obj.line_num = loc.Location.line
+  let matches_file = Utils.string_is_suffix frame_obj.file_str lfname in
+  let matches_line = match frame_obj.line_num with
+    | None -> false
+    | Some line -> line = loc.Location.line in
+  matches_file && matches_line
 
 let parse_stack_frame frame_str =
   (* separate the qualified method name and the parenthesized text/line number*)
@@ -58,18 +61,16 @@ let parse_stack_frame frame_str =
   let method_str = Str.matched_group 2 qualified_procname in
   (* Native methods don't have debugging info *)
   if string_equal file_and_line "Native Method" then
-    make_frame class_str method_str "Native Method" (-1)
+    make_frame class_str method_str "Native Method" None
   else begin
     (* Separate the filename and line number.
        note that a few methods might not have line number information,
        for those, file_and_line includes only the filename. *)
     let is_file_line = Str.string_match file_and_line_regexp file_and_line 0 in
-    let file_str = if is_file_line
-      then Str.matched_group 1 file_and_line
-      else file_and_line in
-    let line_num = if is_file_line
-      then int_of_string (Str.matched_group 2 file_and_line)
-      else -1 in
+    let file_str, line_num = if is_file_line
+      then Str.matched_group 1 file_and_line,
+           Some (int_of_string (Str.matched_group 2 file_and_line))
+      else file_and_line, None in
     make_frame class_str method_str file_str line_num
   end
 

infer/src/harness/stacktrace.mli

@@ -13,7 +13,7 @@ type frame = {
   class_str : string;
   method_str : string;
   file_str : string;
-  line_num : int;
+  line_num : int option;
 }
 
 type t = {
@@ -23,7 +23,7 @@ type t = {
 
 val make : string -> frame list -> t
 
-val make_frame : string -> string -> string -> int -> frame
+val make_frame : string -> string -> string -> int option -> frame
 
 val frame_matches_location : frame -> Location.t -> bool
 

infer/src/unit/BoundedCallTreeTests.ml

@@ -28,8 +28,8 @@ let tests =
   let class_name = "com.example.SomeClass" in
   let file_name = "SomeClass.java" in
   let trace = Stacktrace.make "java.lang.NullPointerException"
-      [Stacktrace.make_frame class_name "foo" file_name 16;
-       Stacktrace.make_frame class_name "bar" file_name 20] in
+      [Stacktrace.make_frame class_name "foo" file_name (Some 16);
+       Stacktrace.make_frame class_name "bar" file_name (Some 20)] in
   let extras = { BoundedCallTree.get_proc_desc = mock_get_proc_desc;
                  stacktrace = trace; } in
   let caller_foo_name = Procname.from_string_c_fun "foo" in

infer/src/unit/stacktraceTests.ml

@@ -41,7 +41,7 @@ let tests =
            "endtoend.java.checkers.crashcontext.MinimalCrashTest"
            "main"
            "MinimalCrashTest.java"
-           16] in
+           (Some 16)] in
     let one_frame_trace_test_ _ =
       assert_equal trace expected in
     "one_frame_trace">::one_frame_trace_test_ in
@@ -62,9 +62,9 @@ let tests =
     let file_name = "MultiStackFrameCrashTest.java" in
     let expected = Stacktrace.make
         "java.lang.NullPointerException"
-        [Stacktrace.make_frame class_name "bar" file_name 16;
-         Stacktrace.make_frame class_name "foo" file_name 20;
-         Stacktrace.make_frame class_name "main" file_name 24] in
+        [Stacktrace.make_frame class_name "bar" file_name (Some 16);
+         Stacktrace.make_frame class_name "foo" file_name (Some 20);
+         Stacktrace.make_frame class_name "main" file_name (Some 24)] in
     let multi_frame_trace_test_ _ =
       assert_equal trace expected in
     "multi_frame_trace_test">::multi_frame_trace_test_ in
@@ -81,7 +81,7 @@ let tests =
            "endtoend.java.checkers.crashcontext.MinimalCrashTest"
            "main"
            "MinimalCrashTest.java"
-           (-1)] in
+           None] in
     let missing_line_info_test_ _ =
       assert_equal trace expected in
     "missing_line_info_test">::missing_line_info_test_ in

infer/tests/endtoend/java/crashcontext/NativeMethodTest.java

@@ -45,7 +45,7 @@ public class NativeMethodTest {
       assertThat("The stack trace should contain " + FOO_METHOD,
                  crashcontext.hasStackFrame(FOO_METHOD));
       assertThat("The trace should contain at least one native method ",
-                 crashcontext.hasLocationOnStack("Native Method", -1));
+                 crashcontext.hasNativeMethodOnStack());
       assertThat("The stack trace should contain " + REFLECTION_INVOKE_METHOD,
                  crashcontext.hasStackFrame(REFLECTION_INVOKE_METHOD));
       assertThat("The stack trace should contain " + MAIN_METHOD,

infer/tests/utils/CrashContextResults.java

@@ -59,6 +59,16 @@ public class CrashContextResults {
     return false;
   }
 
+  public boolean hasNativeMethodOnStack() {
+    for (JsonNode frame : json.path("stack")) {
+      if (frame.path("location").path("file").asText()
+            .equals("Native Method")) {
+        return true;
+      }
+    }
+    return false;
+  }
+
   private List<JsonNode> findNodesForMethod(JsonNode node,
                                             String methodSignature,
                                             List<JsonNode> accumulator) {