[interpreter] Translate exception handlers into graph.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 7dc440862ba102b4bd75282cb3b7bb1bdea5c030..7288995884fefbbf65cb2f6000b8dc22ff734a9c 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -4755,13 +4755,18 @@ class HandlerTable : public FixedArray {
   // undecidable it is merely an approximation (e.g. useful for debugger).
   enum CatchPrediction { UNCAUGHT, CAUGHT };
 
-  // Accessors for handler table based on ranges.
+  // Getters for handler table based on ranges.
+  inline int GetRangeStart(int index) const;
+  inline int GetRangeEnd(int index) const;
+  inline int GetRangeHandler(int index) const;
+
+  // Setters for handler table based on ranges.
   inline void SetRangeStart(int index, int value);
   inline void SetRangeEnd(int index, int value);
   inline void SetRangeHandler(int index, int offset, CatchPrediction pred);
   inline void SetRangeDepth(int index, int value);
 
-  // Accessors for handler table based on return addresses.
+  // Setters for handler table based on return addresses.
   inline void SetReturnOffset(int index, int value);
   inline void SetReturnHandler(int index, int offset, CatchPrediction pred);
 
@@ -4771,6 +4776,9 @@ class HandlerTable : public FixedArray {
   // Lookup handler in a table based on return addresses.
   int LookupReturn(int pc_offset, CatchPrediction* prediction);
 
+  // Returns the number of entries in the table.
+  inline int NumberOfRangeEntries() const;
+
   // Returns the required length of the underlying fixed array.
   static int LengthForRange(int entries) { return entries * kRangeEntrySize; }
   static int LengthForReturn(int entries) { return entries * kReturnEntrySize; }