Simplify representation of stack frames. Remove the special types DartFrame/StubFrame and instead u…

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 "vm/code_generator.h"
 #include "vm/code_patcher.h"
 #include "vm/compiler.h"
 #include "vm/dart_entry.h"
@@ skipping 849 matching lines @@
 }
 
 
 void Debugger::BreakpointCallback() {
   ASSERT(initialized_);
 
   if (ignore_breakpoints_) {
     return;
   }
   DartFrameIterator iterator;
-  DartFrame* frame = iterator.NextFrame();
-  ASSERT(frame != NULL);
+  StackFrame* frame = iterator.NextFrame();
+  ASSERT(frame != NULL && frame->IsDartFrame());
   CodeBreakpoint* bpt = GetCodeBreakpoint(frame->pc());
   ASSERT(bpt != NULL);
   if (verbose) {
     OS::Print(">>> %s breakpoint at %s:%d (Address %p)\n",
               bpt->IsInternal() ? "hit internal" : "hit user",
               bpt ? String::Handle(bpt->SourceUrl()).ToCString() : "?",
               bpt ? bpt->LineNumber() : 0,
               frame->pc());
   }
   DebuggerStackTrace* stack_trace = new DebuggerStackTrace(8);
@@ skipping 214 matching lines @@
 }
 
 
 void Debugger::RegisterCodeBreakpoint(CodeBreakpoint* bpt) {
   ASSERT(bpt->next() == NULL);
   bpt->set_next(code_breakpoints_);
   code_breakpoints_ = bpt;
 }
 
 }  // namespace dart