Introduce instance type for transition arrays.

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 58 matching lines @@
       break;
     case FIXED_ARRAY_TYPE:
       FixedArray::cast(this)->FixedArrayPrint(os);
       break;
     case BYTE_ARRAY_TYPE:
       ByteArray::cast(this)->ByteArrayPrint(os);
       break;
     case BYTECODE_ARRAY_TYPE:
       BytecodeArray::cast(this)->BytecodeArrayPrint(os);
       break;
+    case TRANSITION_ARRAY_TYPE:
+      TransitionArray::cast(this)->TransitionArrayPrint(os);
+      break;
     case FREE_SPACE_TYPE:
       FreeSpace::cast(this)->FreeSpacePrint(os);
       break;
 
 #define PRINT_FIXED_TYPED_ARRAY(Type, type, TYPE, ctype, size) \
   case Fixed##Type##Array::kInstanceType:                      \
     Fixed##Type##Array::cast(this)->FixedTypedArrayPrint(os);  \
     break;
 
     TYPED_ARRAYS(PRINT_FIXED_TYPED_ARRAY)
@@ skipping 457 matching lines @@
     if (is_the_hole(i)) {
       os << "<the hole>";
     } else {
       os << get_scalar(i);
     }
   }
   os << "\n";
 }
 
 
+void TransitionArray::TransitionArrayPrint(std::ostream& os) {  // NOLINT
+  HeapObject::PrintHeader(os, "TransitionArray");
+  os << " - capacity: " << length();
+  for (int i = 0; i < length(); i++) {
+    os << "\n  [" << i << "]: " << Brief(get(i));
+    if (i == kNextLinkIndex) os << " (next link)";
+    if (i == kPrototypeTransitionsIndex) os << " (prototype transitions)";
+    if (i == kTransitionLengthIndex) os << " (number of transitions)";
+  }
+  os << "\n";
+}
+
+
 void TypeFeedbackMetadata::Print() {
   OFStream os(stdout);
   TypeFeedbackMetadataPrint(os);
   os << std::flush;
 }
 
 
 void TypeFeedbackMetadata::TypeFeedbackMetadataPrint(
     std::ostream& os) {  // NOLINT
   HeapObject::PrintHeader(os, "TypeFeedbackMetadata");
@@ skipping 764 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