[debugger] introduce abstract interface for break location.

src/objects.h

 // Copyright 2015 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_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 
 #include "src/allocation.h"
@@ skipping 4437 matching lines @@
   DECL_ACCESSORS(source_position_table, FixedArray)
 
   DECLARE_CAST(BytecodeArray)
 
   // Dispatched behavior.
   inline int BytecodeArraySize();
 
   inline int instruction_size();
 
   int SourcePosition(int offset);
+  int SourceStatementPosition(int offset);
 
   DECLARE_PRINTER(BytecodeArray)
   DECLARE_VERIFIER(BytecodeArray)
 
   void Disassemble(std::ostream& os);
 
   // Layout description.
   static const int kFrameSizeOffset = FixedArrayBase::kHeaderSize;
   static const int kParameterSizeOffset = kFrameSizeOffset + kIntSize;
   static const int kConstantPoolOffset = kParameterSizeOffset + kIntSize;
@@ skipping 906 matching lines @@
   static void PatchPlatformCodeAge(Isolate* isolate,
                                    byte* sequence, Age age,
                                    MarkingParity parity);
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(Code);
 };
 
 class AbstractCode : public HeapObject {
  public:
   int SourcePosition(int offset);
+  int SourceStatementPosition(int offset);
 
   DECLARE_CAST(AbstractCode)
+  inline int Size();
   inline Code* GetCode();
   inline BytecodeArray* GetBytecodeArray();
 };
 
 // Dependent code is a singly linked list of fixed arrays. Each array contains
 // code objects in weak cells for one dependent group. The suffix of the array
 // can be filled with the undefined value if the number of codes is less than
 // the length of the array.
 //
 // +------+-----------------+--------+--------+-----+--------+-----------+-----+
@@ skipping 5186 matching lines @@
 
 
 // The DebugInfo class holds additional information for a function being
 // debugged.
 class DebugInfo: public Struct {
  public:
   // The shared function info for the source being debugged.
   DECL_ACCESSORS(shared, SharedFunctionInfo)
   // Code object for the patched code. This code object is the code object
   // currently active for the function.
-  DECL_ACCESSORS(code, Code)
+  DECL_ACCESSORS(abstract_code, AbstractCode)
   // Fixed array holding status information for each active break point.
   DECL_ACCESSORS(break_points, FixedArray)
 
   // Check if there is a break point at a code offset.
   bool HasBreakPoint(int code_offset);
   // Get the break point info object for a code offset.
   Object* GetBreakPointInfo(int code_offset);
   // Clear a break point.
   static void ClearBreakPoint(Handle<DebugInfo> debug_info, int code_offset,
                               Handle<Object> break_point_object);
   // Set a break point.
   static void SetBreakPoint(Handle<DebugInfo> debug_info, int code_offset,
                             int source_position, int statement_position,
                             Handle<Object> break_point_object);
   // Get the break point objects for a code offset.
   Handle<Object> GetBreakPointObjects(int code_offset);
   // Find the break point info holding this break point object.
   static Handle<Object> FindBreakPointInfo(Handle<DebugInfo> debug_info,
                                            Handle<Object> break_point_object);
   // Get the number of break points for this function.
   int GetBreakPointCount();
 
   DECLARE_CAST(DebugInfo)
 
   // Dispatched behavior.
   DECLARE_PRINTER(DebugInfo)
   DECLARE_VERIFIER(DebugInfo)
 
   static const int kSharedFunctionInfoIndex = Struct::kHeaderSize;
-  static const int kCodeIndex = kSharedFunctionInfoIndex + kPointerSize;
-  static const int kBreakPointsStateIndex = kCodeIndex + kPointerSize;
+  static const int kAbstractCodeIndex = kSharedFunctionInfoIndex + kPointerSize;
+  static const int kBreakPointsStateIndex = kAbstractCodeIndex + kPointerSize;
   static const int kSize = kBreakPointsStateIndex + kPointerSize;
 
   static const int kEstimatedNofBreakPointsInFunction = 16;
 
  private:
   static const int kNoBreakPointInfo = -1;
 
   // Lookup the index in the break_points array for a code offset.
   int GetBreakPointInfoIndex(int code_offset);
 
@@ skipping 165 matching lines @@
     }
     return value;
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #endif  // V8_OBJECTS_H_