Proper implementation of Dart_GetStackTrace.

runtime/vm/debugger_api_impl.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "include/dart_debugger_api.h"
 
 #include "vm/dart_api_impl.h"
 #include "vm/dart_api_state.h"
 #include "vm/debugger.h"
 #include "vm/isolate.h"
@@ skipping 154 matching lines @@
 
 
 DART_EXPORT Dart_Handle Dart_GetStackTrace(Dart_StackTrace* trace) {
   Isolate* isolate = Isolate::Current();
   DARTSCOPE(isolate);
   CHECK_NOT_NULL(trace);
   *trace = reinterpret_cast<Dart_StackTrace>(isolate->debugger()->StackTrace());
   return Api::True(isolate);
 }
 
+DART_EXPORT Dart_Handle Dart_GetStackTrace2() {
+  Isolate* isolate = Isolate::Current();
+  DARTSCOPE(isolate);
+  const GrowableObjectArray& scriptUrls =
+      GrowableObjectArray::Handle(GrowableObjectArray::New(8));
+  DebuggerStackTrace* stackTrace = isolate->debugger()->CollectStackTrace();
+  for (intptr_t i = 0; i < stackTrace->Length(); ++i) {
+    String& scriptUrl = String::Handle();
+    scriptUrl ^= stackTrace->ActivationFrameAt(i)->SourceUrl();
+    scriptUrls.Add(scriptUrl);
+  }
+  return Api::NewHandle(isolate, Array::MakeArray(scriptUrls));
+}
+
 
 DART_EXPORT Dart_Handle Dart_ActivationFrameInfo(
                             Dart_ActivationFrame activation_frame,
                             Dart_Handle* function_name,
                             Dart_Handle* script_url,
                             intptr_t* line_number,
                             intptr_t* library_id) {
   Isolate* isolate = Isolate::Current();
   DARTSCOPE(isolate);
   CHECK_AND_CAST(ActivationFrame, frame, activation_frame);
@@ skipping 465 matching lines @@
   for (int i = 0; i < num_libs; i++) {
     lib ^= libs.At(i);
     ASSERT(!lib.IsNull());
     lib_url = lib.url();
     library_url_list.SetAt(i, lib_url);
   }
   return Api::NewHandle(isolate, library_url_list.raw());
 }
 
 }  // namespace dart