Traverse inlined frames lazily when printing the stacktrace.

runtime/vm/object.h

 // Copyright (c) 2012, 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_OBJECT_H_
 #define VM_OBJECT_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/utils.h"
@@ skipping 5828 matching lines @@
 
 
 // Internal stacktrace object used in exceptions for printing stack traces.
 class Stacktrace : public Instance {
  public:
   static const int kPreallocatedStackdepth = 10;
 
   intptr_t Length() const;
 
   RawFunction* FunctionAtFrame(intptr_t frame_index) const;
-  void SetFunctionAtFrame(intptr_t frame_index, const Function& func) const;
 
   RawCode* CodeAtFrame(intptr_t frame_index) const;
   void SetCodeAtFrame(intptr_t frame_index, const Code& code) const;
 
   RawSmi* PcOffsetAtFrame(intptr_t frame_index) const;
   void SetPcOffsetAtFrame(intptr_t frame_index, const Smi& pc_offset) const;
-  void SetCatchStacktrace(const Array& func_array,
-                          const Array& code_array,
+  void SetCatchStacktrace(const Array& code_array,
                           const Array& pc_offset_array) const;
 
-  void Append(const Array& func_list,
-              const Array& code_list,
-              const Array& pc_offset_list) const;
+  void Append(const Array& code_list, const Array& pc_offset_list) const;
 
   static intptr_t InstanceSize() {
     return RoundedAllocationSize(sizeof(RawStacktrace));
   }
-  static RawStacktrace* New(const Array& func_array,
-                            const Array& code_array,
+  static RawStacktrace* New(const Array& code_array,
                             const Array& pc_offset_array,
                             Heap::Space space = Heap::kNew);
 
   RawString* FullStacktrace() const;
   const char* ToCStringInternal(intptr_t frame_index) const;
 
  private:
-  void set_function_array(const Array& function_array) const;
   void set_code_array(const Array& code_array) const;
   void set_pc_offset_array(const Array& pc_offset_array) const;
-  void set_catch_func_array(const Array& function_array) const;
   void set_catch_code_array(const Array& code_array) const;
   void set_catch_pc_offset_array(const Array& pc_offset_array) const;
 
   FINAL_HEAP_OBJECT_IMPLEMENTATION(Stacktrace, Instance);
   friend class Class;
 };
 
 
 // Internal JavaScript regular expression object.
 class JSRegExp : public Instance {
@@ skipping 262 matching lines @@
 
 
 RawObject* MegamorphicCache::GetTargetFunction(const Array& array,
                                                intptr_t index) {
   return array.At((index * kEntryLength) + kTargetFunctionIndex);
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_