[interpreter, debugger] abstraction for source position calculation.

src/frames.h

 // Copyright 2012 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_FRAMES_H_
 #define V8_FRAMES_H_
 
 #include "src/allocation.h"
 #include "src/handles.h"
 #include "src/safepoint-table.h"
@@ skipping 526 matching lines @@
   void IterateCompiledFrame(ObjectVisitor* v) const;
 
  private:
   friend class StackFrame;
   friend class SafeStackFrameIterator;
 };
 
 
 class FrameSummary BASE_EMBEDDED {
  public:
-  FrameSummary(Object* receiver, JSFunction* function, Code* code, int offset,
+  FrameSummary(Object* receiver, JSFunction* function,
+               AbstractCode* abstract_code, int code_offset,
                bool is_constructor);
 
   Handle<Object> receiver() { return receiver_; }
   Handle<JSFunction> function() { return function_; }
-  Handle<Code> code() { return code_; }
-  Address pc() { return code_->address() + offset_; }
-  int offset() { return offset_; }
+  Handle<AbstractCode> abstract_code() { return abstract_code_; }
+  int code_offset() { return code_offset_; }
   bool is_constructor() { return is_constructor_; }
 
   void Print();
 
  private:
   Handle<Object> receiver_;
   Handle<JSFunction> function_;
-  Handle<Code> code_;
-  int offset_;
+  Handle<AbstractCode> abstract_code_;
+  int code_offset_;
   bool is_constructor_;
 };
 
 
 class JavaScriptFrame: public StandardFrame {
  public:
   Type type() const override { return JAVA_SCRIPT; }
 
   // Accessors.
   inline JSFunction* function() const;
@@ skipping 151 matching lines @@
   int LookupExceptionHandlerInTable(
       int* stack_slots, HandlerTable::CatchPrediction* prediction) override;
 
   // Returns the current offset into the bytecode stream.
   int GetBytecodeOffset() const;
 
   // Updates the current offset into the bytecode stream, mainly used for stack
   // unwinding to continue execution at a different bytecode offset.
   void PatchBytecodeOffset(int new_offset);
 
+  // Build a list with summaries for this frame including all inlined frames.
+  void Summarize(List<FrameSummary>* frames) override;
+
  protected:
   inline explicit InterpretedFrame(StackFrameIteratorBase* iterator);
 
  private:
   friend class StackFrameIteratorBase;
 };
 
 
 // Arguments adaptor frames are automatically inserted below
 // JavaScript frames when the actual number of parameters does not
@@ skipping 239 matching lines @@
 
 
 // Reads all frames on the current stack and copies them into the current
 // zone memory.
 Vector<StackFrame*> CreateStackMap(Isolate* isolate, Zone* zone);
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_FRAMES_H_