Add some testing for the variable allocation code in the Parser.

runtime/vm/debugger.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 "vm/debugger.h"
 
 #include "include/dart_api.h"
 
 #include "vm/code_generator.h"
 #include "vm/code_patcher.h"
@@ skipping 12 matching lines @@
 #include "vm/stub_code.h"
 #include "vm/symbols.h"
 #include "vm/visitor.h"
 
 
 namespace dart {
 
 DEFINE_FLAG(bool, verbose_debug, false, "Verbose debugger messages");
 DEFINE_FLAG(bool, trace_debugger_stacktrace, false,
             "Trace debugger stacktrace collection");
+DEFINE_FLAG(bool, show_invisible_frames, false,
+            "Show invisible frames in debugger stack traces");
 
 
 Debugger::EventHandler* Debugger::event_handler_ = NULL;
 
 
 class RemoteObjectCache : public ZoneAllocated {
  public:
   explicit RemoteObjectCache(intptr_t initial_size);
   intptr_t AddObject(const Object& obj);
   RawObject* GetObj(intptr_t obj_id) const;
@@ skipping 814 matching lines @@
       VariableAt(v, &var_name, &unused, &unused, &var_value);
       jsvar.AddProperty("name", var_name.ToCString());
       jsvar.AddProperty("value", var_value);
     }
   }
 }
 
 
 
 void DebuggerStackTrace::AddActivation(ActivationFrame* frame) {
-  if (frame->function().is_visible()) {
+  if (FLAG_show_invisible_frames || frame->function().is_visible()) {
     trace_.Add(frame);
   }
 }
 
 
 static bool IsSafeDescKind(PcDescriptors::Kind kind) {
   return ((kind == PcDescriptors::kIcCall) ||
           (kind == PcDescriptors::kOptStaticCall) ||
           (kind == PcDescriptors::kUnoptStaticCall) ||
           (kind == PcDescriptors::kClosureCall) ||
@@ skipping 1648 matching lines @@
 }
 
 
 void Debugger::RegisterCodeBreakpoint(CodeBreakpoint* bpt) {
   ASSERT(bpt->next() == NULL);
   bpt->set_next(code_breakpoints_);
   code_breakpoints_ = bpt;
 }
 
 }  // namespace dart