[key-accumulator] Starting to reimplement the key-accumulator

src/objects-printer.cc

 // 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.
 
 #include "src/objects.h"
 
 #include "src/disasm.h"
 #include "src/disassembler.h"
 #include "src/interpreter/bytecodes.h"
 #include "src/objects-inl.h"
@@ skipping 436 matching lines @@
 
 void Map::MapPrint(std::ostream& os) {  // NOLINT
   HeapObject::PrintHeader(os, "Map");
   os << "\n - type: " << instance_type();
   os << "\n - instance size: " << instance_size();
   if (IsJSObjectMap()) {
     os << "\n - inobject properties: " << GetInObjectProperties();
   }
   os << "\n - elements kind: " << ElementsKindToString(elements_kind());
   os << "\n - unused property fields: " << unused_property_fields();
+  os << "\n - enum length: ";
+  if (EnumLength() == kInvalidEnumCacheSentinel) {
+    os << "invalid";
+  } else {
+    os << EnumLength();
+  }
   if (is_deprecated()) os << "\n - deprecated_map";
   if (is_stable()) os << "\n - stable_map";
   if (is_dictionary_map()) os << "\n - dictionary_map";
   if (has_hidden_prototype()) os << "\n - has_hidden_prototype";
   if (has_named_interceptor()) os << " - named_interceptor";
   if (has_indexed_interceptor()) os << "\n - indexed_interceptor";
   if (is_undetectable()) os << "\n - undetectable";
   if (is_callable()) os << "\n - callable";
   if (is_constructor()) os << "\n - constructor";
   if (is_access_check_needed()) os << "\n - access_check_needed";
@@ skipping 849 matching lines @@
 void JSObject::PrintTransitions(std::ostream& os) {  // NOLINT
   Object* transitions = map()->raw_transitions();
   int num_transitions = TransitionArray::NumberOfTransitions(transitions);
   if (num_transitions == 0) return;
   os << "\n - transitions";
   TransitionArray::PrintTransitions(os, transitions, false);
 }
 #endif  // defined(DEBUG) || defined(OBJECT_PRINT)
 }  // namespace internal
 }  // namespace v8