[objects] Extract DebugInfo and BreakPointInfo to own file

src/objects/breakpoints-info.h

+// Copyright 2017 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef V8_OBJECTS_BREAKPOINTS_INFO_H_
+#define V8_OBJECTS_BREAKPOINTS_INFO_H_
+
+#include "src/objects.h"
+
+// Has to be the last include (doesn't have include guards):
+#include "src/objects/object-macros.h"
+
+namespace v8 {
+namespace internal {
+
+// The BreakPointInfo class holds information for break points set in a
+// function. The DebugInfo object holds a BreakPointInfo object for each code
+// position with one or more break points.
+class BreakPointInfo : public Tuple2 {

[jgruber, 2017/05/22 13:31:07]

I'm planning on adding a BreakPointsInfo class in a follow-up, hence the
filename 'break-points-info' (plural).

+ public:
+  // The position in the source for the break position.
+  DECL_INT_ACCESSORS(source_position)
+  // List of related JavaScript break points.
+  DECL_ACCESSORS(break_point_objects, Object)
+
+  // Removes a break point.
+  static void ClearBreakPoint(Handle<BreakPointInfo> info,
+                              Handle<Object> break_point_object);
+  // Set a break point.
+  static void SetBreakPoint(Handle<BreakPointInfo> info,
+                            Handle<Object> break_point_object);
+  // Check if break point info has this break point object.
+  static bool HasBreakPointObject(Handle<BreakPointInfo> info,
+                                  Handle<Object> break_point_object);
+  // Get the number of break points for this code offset.
+  int GetBreakPointCount();
+
+  int GetStatementPosition(Handle<DebugInfo> debug_info);
+
+  DECLARE_CAST(BreakPointInfo)
+
+  static const int kSourcePositionIndex = kValue1Offset;
+  static const int kBreakPointObjectsIndex = kValue2Offset;
+
+ private:
+  DISALLOW_IMPLICIT_CONSTRUCTORS(BreakPointInfo);
+};
+
+#include "src/objects/object-macros-undef.h"
+
+}  // namespace internal
+}  // namespace v8
+
+#endif  // V8_OBJECTS_BREAKPOINTS_INFO_H_