Very first steps for a debugger

runtime/vm/debugger.h

Index: runtime/vm/debugger.h
===================================================================
--- runtime/vm/debugger.h	(revision 0)
+++ runtime/vm/debugger.h	(revision 0)
@@ -0,0 +1,37 @@
+// Copyright (c) 2011, 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.
+
+#ifndef VM_DEBUGGER_H_
+#define VM_DEBUGGER_H_
+
+#include "vm/object.h"
+
+namespace dart {
+
+class Breakpoint;
+class Isolate;
+class ObjectPointerVisitor;
+
+class Debugger {
+ public:
+  Debugger();
+
+  void Initialize(Isolate* isolate);
+  void SetBreakpoint(const String& class_name, const String& function_name);

[srdjan, 2011/11/29 22:26:00]

Should this be SetBreakpointAtEntry?

[siva, 2011/11/30 00:00:47]

I am presuming this will evolve into two functions
SetBreakpointInFunction(library_name, class_name, function_name);
SetBreakpointAtLine(library_name, class_name, token_index);

[hausner, 2011/11/30 01:17:05]

Done.

[hausner, 2011/11/30 01:17:05]

Yes, there will eventually be several methods, eg. setting a breakpoint at a
given script and line number. This is just one simple case to get something
going,

+
+  void VisitObjectPointers(ObjectPointerVisitor* visitor);
+
+  Breakpoint* GetBreakpoint(uword breakpoint_address);

[srdjan, 2011/11/29 22:26:00]

Maybe comment that it returns NULL if breakpoint is not found.

[hausner, 2011/11/30 01:17:05]

Done.

+
+ private:

[srdjan, 2011/11/29 22:26:00]

DISALLOW_.....

[hausner, 2011/11/30 01:17:05]

Done.

+  void AddBreakpoint(Breakpoint* bpt);
+
+  bool initialized_;
+  Breakpoint* breakpoints_;
+};
+
+
+}  // namespace dart
+
+#endif  // VM_DEBUGGER_H_