root/src/objects-printer.cc

DEFINITIONS

1. Print
2. PrintLn
3. PrintHeader
4. HeapObjectPrint
5. ByteArrayPrint
6. FreeSpacePrint
7. ExternalPixelArrayPrint
8. ExternalByteArrayPrint
9. ExternalUnsignedByteArrayPrint
10. ExternalShortArrayPrint
11. ExternalUnsignedShortArrayPrint
12. ExternalIntArrayPrint
13. ExternalUnsignedIntArrayPrint
14. ExternalFloatArrayPrint
15. ExternalDoubleArrayPrint
16. PrintProperties
17. PrintElements
18. PrintTransitions
19. JSObjectPrint
20. JSModulePrint
21. TypeToString
22. MapPrint
23. CodeCachePrint
24. PolymorphicCodeCachePrint
25. TypeFeedbackInfoPrint
26. AliasedArgumentsEntryPrint
27. FixedArrayPrint
28. FixedDoubleArrayPrint
29. JSValuePrint
30. JSMessageObjectPrint
31. StringPrint
32. ToAsciiArray
33. JSDatePrint
34. JSProxyPrint
35. JSFunctionProxyPrint
36. JSWeakMapPrint
37. JSFunctionPrint
38. SharedFunctionInfoPrint
39. JSGlobalProxyPrint
40. JSGlobalObjectPrint
41. JSBuiltinsObjectPrint
42. JSGlobalPropertyCellPrint
43. CodePrint
44. ForeignPrint
45. AccessorInfoPrint
46. AccessorPairPrint
47. AccessCheckInfoPrint
48. InterceptorInfoPrint
49. CallHandlerInfoPrint
50. FunctionTemplateInfoPrint
51. ObjectTemplateInfoPrint
52. SignatureInfoPrint
53. TypeSwitchInfoPrint
54. ScriptPrint
55. DebugInfoPrint
56. BreakPointInfoPrint
57. PrintDescriptors
58. PrintTransitions

// Copyright 2012 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
//       copyright notice, this list of conditions and the following
//       disclaimer in the documentation and/or other materials provided
//       with the distribution.
//     * Neither the name of Google Inc. nor the names of its
//       contributors may be used to endorse or promote products derived
//       from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#include "v8.h"

#include "disassembler.h"
#include "disasm.h"
#include "jsregexp.h"
#include "objects-visiting.h"

namespace v8 {
namespace internal {

#ifdef OBJECT_PRINT

static const char* TypeToString(InstanceType type);


void MaybeObject::Print(FILE* out) {
  Object* this_as_object;
  if (ToObject(&this_as_object)) {
    if (this_as_object->IsSmi()) {
      Smi::cast(this_as_object)->SmiPrint(out);
    } else {
      HeapObject::cast(this_as_object)->HeapObjectPrint(out);
    }
  } else {
    Failure::cast(this)->FailurePrint(out);
  }
  Flush(out);
}


void MaybeObject::PrintLn(FILE* out) {
  Print(out);
  PrintF(out, "\n");
}


void HeapObject::PrintHeader(FILE* out, const char* id) {
  PrintF(out, "%p: [%s]\n", reinterpret_cast<void*>(this), id);
}


void HeapObject::HeapObjectPrint(FILE* out) {
  InstanceType instance_type = map()->instance_type();

  HandleScope scope;
  if (instance_type < FIRST_NONSTRING_TYPE) {
    String::cast(this)->StringPrint(out);
    return;
  }

  switch (instance_type) {
    case MAP_TYPE:
      Map::cast(this)->MapPrint(out);
      break;
    case HEAP_NUMBER_TYPE:
      HeapNumber::cast(this)->HeapNumberPrint(out);
      break;
    case FIXED_DOUBLE_ARRAY_TYPE:
      FixedDoubleArray::cast(this)->FixedDoubleArrayPrint(out);
      break;
    case FIXED_ARRAY_TYPE:
      FixedArray::cast(this)->FixedArrayPrint(out);
      break;
    case BYTE_ARRAY_TYPE:
      ByteArray::cast(this)->ByteArrayPrint(out);
      break;
    case FREE_SPACE_TYPE:
      FreeSpace::cast(this)->FreeSpacePrint(out);
      break;
    case EXTERNAL_PIXEL_ARRAY_TYPE:
      ExternalPixelArray::cast(this)->ExternalPixelArrayPrint(out);
      break;
    case EXTERNAL_BYTE_ARRAY_TYPE:
      ExternalByteArray::cast(this)->ExternalByteArrayPrint(out);
      break;
    case EXTERNAL_UNSIGNED_BYTE_ARRAY_TYPE:
      ExternalUnsignedByteArray::cast(this)
          ->ExternalUnsignedByteArrayPrint(out);
      break;
    case EXTERNAL_SHORT_ARRAY_TYPE:
      ExternalShortArray::cast(this)->ExternalShortArrayPrint(out);
      break;
    case EXTERNAL_UNSIGNED_SHORT_ARRAY_TYPE:
      ExternalUnsignedShortArray::cast(this)
          ->ExternalUnsignedShortArrayPrint(out);
      break;
    case EXTERNAL_INT_ARRAY_TYPE:
      ExternalIntArray::cast(this)->ExternalIntArrayPrint(out);
      break;
    case EXTERNAL_UNSIGNED_INT_ARRAY_TYPE:
      ExternalUnsignedIntArray::cast(this)->ExternalUnsignedIntArrayPrint(out);
      break;
    case EXTERNAL_FLOAT_ARRAY_TYPE:
      ExternalFloatArray::cast(this)->ExternalFloatArrayPrint(out);
      break;
    case EXTERNAL_DOUBLE_ARRAY_TYPE:
      ExternalDoubleArray::cast(this)->ExternalDoubleArrayPrint(out);
      break;
    case FILLER_TYPE:
      PrintF(out, "filler");
      break;
    case JS_OBJECT_TYPE:  // fall through
    case JS_CONTEXT_EXTENSION_OBJECT_TYPE:
    case JS_ARRAY_TYPE:
    case JS_REGEXP_TYPE:
      JSObject::cast(this)->JSObjectPrint(out);
      break;
    case ODDBALL_TYPE:
      Oddball::cast(this)->to_string()->Print(out);
      break;
    case JS_MODULE_TYPE:
      JSModule::cast(this)->JSModulePrint(out);
      break;
    case JS_FUNCTION_TYPE:
      JSFunction::cast(this)->JSFunctionPrint(out);
      break;
    case JS_GLOBAL_PROXY_TYPE:
      JSGlobalProxy::cast(this)->JSGlobalProxyPrint(out);
      break;
    case JS_GLOBAL_OBJECT_TYPE:
      JSGlobalObject::cast(this)->JSGlobalObjectPrint(out);
      break;
    case JS_BUILTINS_OBJECT_TYPE:
      JSBuiltinsObject::cast(this)->JSBuiltinsObjectPrint(out);
      break;
    case JS_VALUE_TYPE:
      PrintF(out, "Value wrapper around:");
      JSValue::cast(this)->value()->Print(out);
      break;
    case JS_DATE_TYPE:
      JSDate::cast(this)->JSDatePrint(out);
      break;
    case CODE_TYPE:
      Code::cast(this)->CodePrint(out);
      break;
    case JS_PROXY_TYPE:
      JSProxy::cast(this)->JSProxyPrint(out);
      break;
    case JS_FUNCTION_PROXY_TYPE:
      JSFunctionProxy::cast(this)->JSFunctionProxyPrint(out);
      break;
    case JS_WEAK_MAP_TYPE:
      JSWeakMap::cast(this)->JSWeakMapPrint(out);
      break;
    case FOREIGN_TYPE:
      Foreign::cast(this)->ForeignPrint(out);
      break;
    case SHARED_FUNCTION_INFO_TYPE:
      SharedFunctionInfo::cast(this)->SharedFunctionInfoPrint(out);
      break;
    case JS_MESSAGE_OBJECT_TYPE:
      JSMessageObject::cast(this)->JSMessageObjectPrint(out);
      break;
    case JS_GLOBAL_PROPERTY_CELL_TYPE:
      JSGlobalPropertyCell::cast(this)->JSGlobalPropertyCellPrint(out);
      break;
#define MAKE_STRUCT_CASE(NAME, Name, name) \
  case NAME##_TYPE:                        \
    Name::cast(this)->Name##Print(out);    \
    break;
  STRUCT_LIST(MAKE_STRUCT_CASE)
#undef MAKE_STRUCT_CASE

    default:
      PrintF(out, "UNKNOWN TYPE %d", map()->instance_type());
      UNREACHABLE();
      break;
  }
}


void ByteArray::ByteArrayPrint(FILE* out) {
  PrintF(out, "byte array, data starts at %p", GetDataStartAddress());
}


void FreeSpace::FreeSpacePrint(FILE* out) {
  PrintF(out, "free space, size %d", Size());
}


void ExternalPixelArray::ExternalPixelArrayPrint(FILE* out) {
  PrintF(out, "external pixel array");
}


void ExternalByteArray::ExternalByteArrayPrint(FILE* out) {
  PrintF(out, "external byte array");
}


void ExternalUnsignedByteArray::ExternalUnsignedByteArrayPrint(FILE* out) {
  PrintF(out, "external unsigned byte array");
}


void ExternalShortArray::ExternalShortArrayPrint(FILE* out) {
  PrintF(out, "external short array");
}


void ExternalUnsignedShortArray::ExternalUnsignedShortArrayPrint(FILE* out) {
  PrintF(out, "external unsigned short array");
}


void ExternalIntArray::ExternalIntArrayPrint(FILE* out) {
  PrintF(out, "external int array");
}


void ExternalUnsignedIntArray::ExternalUnsignedIntArrayPrint(FILE* out) {
  PrintF(out, "external unsigned int array");
}


void ExternalFloatArray::ExternalFloatArrayPrint(FILE* out) {
  PrintF(out, "external float array");
}


void ExternalDoubleArray::ExternalDoubleArrayPrint(FILE* out) {
  PrintF(out, "external double array");
}


void JSObject::PrintProperties(FILE* out) {
  if (HasFastProperties()) {
    DescriptorArray* descs = map()->instance_descriptors();
    for (int i = 0; i < descs->number_of_descriptors(); i++) {
      PrintF(out, "   ");
      descs->GetKey(i)->StringPrint(out);
      PrintF(out, ": ");
      switch (descs->GetType(i)) {
        case FIELD: {
          int index = descs->GetFieldIndex(i);
          FastPropertyAt(index)->ShortPrint(out);
          PrintF(out, " (field at offset %d)\n", index);
          break;
        }
        case CONSTANT_FUNCTION:
          descs->GetConstantFunction(i)->ShortPrint(out);
          PrintF(out, " (constant function)\n");
          break;
        case CALLBACKS:
          descs->GetCallbacksObject(i)->ShortPrint(out);
          PrintF(out, " (callback)\n");
          break;
        case NORMAL:  // only in slow mode
        case HANDLER:  // only in lookup results, not in descriptors
        case INTERCEPTOR:  // only in lookup results, not in descriptors
        // There are no transitions in the descriptor array.
        case TRANSITION:
        case NONEXISTENT:
          UNREACHABLE();
          break;
      }
    }
  } else {
    property_dictionary()->Print(out);
  }
}


void JSObject::PrintElements(FILE* out) {
  // Don't call GetElementsKind, its validation code can cause the printer to
  // fail when debugging.
  switch (map()->elements_kind()) {
    case FAST_HOLEY_SMI_ELEMENTS:
    case FAST_SMI_ELEMENTS:
    case FAST_HOLEY_ELEMENTS:
    case FAST_ELEMENTS: {
      // Print in array notation for non-sparse arrays.
      FixedArray* p = FixedArray::cast(elements());
      for (int i = 0; i < p->length(); i++) {
        PrintF(out, "   %d: ", i);
        p->get(i)->ShortPrint(out);
        PrintF(out, "\n");
      }
      break;
    }
    case FAST_HOLEY_DOUBLE_ELEMENTS:
    case FAST_DOUBLE_ELEMENTS: {
      // Print in array notation for non-sparse arrays.
      if (elements()->length() > 0) {
        FixedDoubleArray* p = FixedDoubleArray::cast(elements());
        for (int i = 0; i < p->length(); i++) {
          if (p->is_the_hole(i)) {
            PrintF(out, "   %d: <the hole>", i);
          } else {
            PrintF(out, "   %d: %g", i, p->get_scalar(i));
          }
          PrintF(out, "\n");
        }
      }
      break;
    }
    case EXTERNAL_PIXEL_ELEMENTS: {
      ExternalPixelArray* p = ExternalPixelArray::cast(elements());
      for (int i = 0; i < p->length(); i++) {
        PrintF(out, "   %d: %d\n", i, p->get_scalar(i));
      }
      break;
    }
    case EXTERNAL_BYTE_ELEMENTS: {
      ExternalByteArray* p = ExternalByteArray::cast(elements());
      for (int i = 0; i < p->length(); i++) {
        PrintF(out, "   %d: %d\n", i, static_cast<int>(p->get_scalar(i)));
      }
      break;
    }
    case EXTERNAL_UNSIGNED_BYTE_ELEMENTS: {
      ExternalUnsignedByteArray* p =
          ExternalUnsignedByteArray::cast(elements());
      for (int i = 0; i < p->length(); i++) {
        PrintF(out, "   %d: %d\n", i, static_cast<int>(p->get_scalar(i)));
      }
      break;
    }
    case EXTERNAL_SHORT_ELEMENTS: {
      ExternalShortArray* p = ExternalShortArray::cast(elements());
      for (int i = 0; i < p->length(); i++) {
        PrintF(out, "   %d: %d\n", i, static_cast<int>(p->get_scalar(i)));
      }
      break;
    }
    case EXTERNAL_UNSIGNED_SHORT_ELEMENTS: {
      ExternalUnsignedShortArray* p =
          ExternalUnsignedShortArray::cast(elements());
      for (int i = 0; i < p->length(); i++) {
        PrintF(out, "   %d: %d\n", i, static_cast<int>(p->get_scalar(i)));
      }
      break;
    }
    case EXTERNAL_INT_ELEMENTS: {
      ExternalIntArray* p = ExternalIntArray::cast(elements());
      for (int i = 0; i < p->length(); i++) {
        PrintF(out, "   %d: %d\n", i, static_cast<int>(p->get_scalar(i)));
      }
      break;
    }
    case EXTERNAL_UNSIGNED_INT_ELEMENTS: {
      ExternalUnsignedIntArray* p =
          ExternalUnsignedIntArray::cast(elements());
      for (int i = 0; i < p->length(); i++) {
        PrintF(out, "   %d: %d\n", i, static_cast<int>(p->get_scalar(i)));
      }
      break;
    }
    case EXTERNAL_FLOAT_ELEMENTS: {
      ExternalFloatArray* p = ExternalFloatArray::cast(elements());
      for (int i = 0; i < p->length(); i++) {
        PrintF(out, "   %d: %f\n", i, p->get_scalar(i));
      }
      break;
    }
    case EXTERNAL_DOUBLE_ELEMENTS: {
      ExternalDoubleArray* p = ExternalDoubleArray::cast(elements());
      for (int i = 0; i < p->length(); i++) {
        PrintF(out, "  %d: %f\n", i, p->get_scalar(i));
      }
      break;
    }
    case DICTIONARY_ELEMENTS:
      elements()->Print(out);
      break;
    case NON_STRICT_ARGUMENTS_ELEMENTS: {
      FixedArray* p = FixedArray::cast(elements());
      for (int i = 2; i < p->length(); i++) {
        PrintF(out, "   %d: ", i);
        p->get(i)->ShortPrint(out);
        PrintF(out, "\n");
      }
      break;
    }
  }
}


void JSObject::PrintTransitions(FILE* out) {
  if (!map()->HasTransitionArray()) return;
  TransitionArray* transitions = map()->transitions();
  for (int i = 0; i < transitions->number_of_transitions(); i++) {
    PrintF(out, "   ");
    transitions->GetKey(i)->StringPrint(out);
    PrintF(out, ": ");
    switch (transitions->GetTargetDetails(i).type()) {
      case FIELD: {
        PrintF(out, " (transition to field)\n");
        break;
      }
      case CONSTANT_FUNCTION:
        PrintF(out, " (transition to constant function)\n");
        break;
      case CALLBACKS:
        PrintF(out, " (transition to callback)\n");
        break;
      // Values below are never in the target descriptor array.
      case NORMAL:
      case HANDLER:
      case INTERCEPTOR:
      case TRANSITION:
      case NONEXISTENT:
        UNREACHABLE();
        break;
    }
  }
}


void JSObject::JSObjectPrint(FILE* out) {
  PrintF(out, "%p: [JSObject]\n", reinterpret_cast<void*>(this));
  PrintF(out, " - map = %p [", reinterpret_cast<void*>(map()));
  // Don't call GetElementsKind, its validation code can cause the printer to
  // fail when debugging.
  PrintElementsKind(out, this->map()->elements_kind());
  PrintF(out,
         "]\n - prototype = %p\n",
         reinterpret_cast<void*>(GetPrototype()));
  PrintF(out, " {\n");
  PrintProperties(out);
  PrintTransitions(out);
  PrintElements(out);
  PrintF(out, " }\n");
}


void JSModule::JSModulePrint(FILE* out) {
  HeapObject::PrintHeader(out, "JSModule");
  PrintF(out, " - map = 0x%p\n", reinterpret_cast<void*>(map()));
  PrintF(out, " - context = ");
  context()->Print(out);
  PrintF(out, " - scope_info = ");
  scope_info()->ShortPrint(out);
  PrintElementsKind(out, this->map()->elements_kind());
  PrintF(out, " {\n");
  PrintProperties(out);
  PrintElements(out);
  PrintF(out, " }\n");
}


static const char* TypeToString(InstanceType type) {
  switch (type) {
    case INVALID_TYPE: return "INVALID";
    case MAP_TYPE: return "MAP";
    case HEAP_NUMBER_TYPE: return "HEAP_NUMBER";
    case SYMBOL_TYPE: return "SYMBOL";
    case ASCII_SYMBOL_TYPE: return "ASCII_SYMBOL";
    case CONS_SYMBOL_TYPE: return "CONS_SYMBOL";
    case CONS_ASCII_SYMBOL_TYPE: return "CONS_ASCII_SYMBOL";
    case EXTERNAL_ASCII_SYMBOL_TYPE:
    case EXTERNAL_SYMBOL_WITH_ASCII_DATA_TYPE:
    case EXTERNAL_SYMBOL_TYPE: return "EXTERNAL_SYMBOL";
    case SHORT_EXTERNAL_ASCII_SYMBOL_TYPE:
    case SHORT_EXTERNAL_SYMBOL_WITH_ASCII_DATA_TYPE:
    case SHORT_EXTERNAL_SYMBOL_TYPE: return "SHORT_EXTERNAL_SYMBOL";
    case ASCII_STRING_TYPE: return "ASCII_STRING";
    case STRING_TYPE: return "TWO_BYTE_STRING";
    case CONS_STRING_TYPE:
    case CONS_ASCII_STRING_TYPE: return "CONS_STRING";
    case EXTERNAL_ASCII_STRING_TYPE:
    case EXTERNAL_STRING_WITH_ASCII_DATA_TYPE:
    case EXTERNAL_STRING_TYPE: return "EXTERNAL_STRING";
    case SHORT_EXTERNAL_ASCII_STRING_TYPE:
    case SHORT_EXTERNAL_STRING_WITH_ASCII_DATA_TYPE:
    case SHORT_EXTERNAL_STRING_TYPE: return "SHORT_EXTERNAL_STRING";
    case FIXED_ARRAY_TYPE: return "FIXED_ARRAY";
    case BYTE_ARRAY_TYPE: return "BYTE_ARRAY";
    case FREE_SPACE_TYPE: return "FREE_SPACE";
    case EXTERNAL_PIXEL_ARRAY_TYPE: return "EXTERNAL_PIXEL_ARRAY";
    case EXTERNAL_BYTE_ARRAY_TYPE: return "EXTERNAL_BYTE_ARRAY";
    case EXTERNAL_UNSIGNED_BYTE_ARRAY_TYPE:
      return "EXTERNAL_UNSIGNED_BYTE_ARRAY";
    case EXTERNAL_SHORT_ARRAY_TYPE: return "EXTERNAL_SHORT_ARRAY";
    case EXTERNAL_UNSIGNED_SHORT_ARRAY_TYPE:
      return "EXTERNAL_UNSIGNED_SHORT_ARRAY";
    case EXTERNAL_INT_ARRAY_TYPE: return "EXTERNAL_INT_ARRAY";
    case EXTERNAL_UNSIGNED_INT_ARRAY_TYPE:
      return "EXTERNAL_UNSIGNED_INT_ARRAY";
    case EXTERNAL_FLOAT_ARRAY_TYPE: return "EXTERNAL_FLOAT_ARRAY";
    case EXTERNAL_DOUBLE_ARRAY_TYPE: return "EXTERNAL_DOUBLE_ARRAY";
    case FILLER_TYPE: return "FILLER";
    case JS_OBJECT_TYPE: return "JS_OBJECT";
    case JS_CONTEXT_EXTENSION_OBJECT_TYPE: return "JS_CONTEXT_EXTENSION_OBJECT";
    case ODDBALL_TYPE: return "ODDBALL";
    case JS_GLOBAL_PROPERTY_CELL_TYPE: return "JS_GLOBAL_PROPERTY_CELL";
    case SHARED_FUNCTION_INFO_TYPE: return "SHARED_FUNCTION_INFO";
    case JS_MODULE_TYPE: return "JS_MODULE";
    case JS_FUNCTION_TYPE: return "JS_FUNCTION";
    case CODE_TYPE: return "CODE";
    case JS_ARRAY_TYPE: return "JS_ARRAY";
    case JS_PROXY_TYPE: return "JS_PROXY";
    case JS_WEAK_MAP_TYPE: return "JS_WEAK_MAP";
    case JS_REGEXP_TYPE: return "JS_REGEXP";
    case JS_VALUE_TYPE: return "JS_VALUE";
    case JS_GLOBAL_OBJECT_TYPE: return "JS_GLOBAL_OBJECT";
    case JS_BUILTINS_OBJECT_TYPE: return "JS_BUILTINS_OBJECT";
    case JS_GLOBAL_PROXY_TYPE: return "JS_GLOBAL_PROXY";
    case FOREIGN_TYPE: return "FOREIGN";
    case JS_MESSAGE_OBJECT_TYPE: return "JS_MESSAGE_OBJECT_TYPE";
#define MAKE_STRUCT_CASE(NAME, Name, name) case NAME##_TYPE: return #NAME;
  STRUCT_LIST(MAKE_STRUCT_CASE)
#undef MAKE_STRUCT_CASE
    default: return "UNKNOWN";
  }
}


void Map::MapPrint(FILE* out) {
  HeapObject::PrintHeader(out, "Map");
  PrintF(out, " - type: %s\n", TypeToString(instance_type()));
  PrintF(out, " - instance size: %d\n", instance_size());
  PrintF(out, " - inobject properties: %d\n", inobject_properties());
  PrintF(out, " - elements kind: ");
  PrintElementsKind(out, elements_kind());
  PrintF(out, "\n - pre-allocated property fields: %d\n",
      pre_allocated_property_fields());
  PrintF(out, " - unused property fields: %d\n", unused_property_fields());
  if (is_hidden_prototype()) {
    PrintF(out, " - hidden_prototype\n");
  }
  if (has_named_interceptor()) {
    PrintF(out, " - named_interceptor\n");
  }
  if (has_indexed_interceptor()) {
    PrintF(out, " - indexed_interceptor\n");
  }
  if (is_undetectable()) {
    PrintF(out, " - undetectable\n");
  }
  if (has_instance_call_handler()) {
    PrintF(out, " - instance_call_handler\n");
  }
  if (is_access_check_needed()) {
    PrintF(out, " - access_check_needed\n");
  }
  PrintF(out, " - instance descriptors: ");
  instance_descriptors()->ShortPrint(out);
  if (HasTransitionArray()) {
    PrintF(out, "\n - transitions: ");
    transitions()->ShortPrint(out);
  }
  PrintF(out, "\n - prototype: ");
  prototype()->ShortPrint(out);
  PrintF(out, "\n - constructor: ");
  constructor()->ShortPrint(out);
  PrintF(out, "\n - code cache: ");
  code_cache()->ShortPrint(out);
  PrintF(out, "\n");
}


void CodeCache::CodeCachePrint(FILE* out) {
  HeapObject::PrintHeader(out, "CodeCache");
  PrintF(out, "\n - default_cache: ");
  default_cache()->ShortPrint(out);
  PrintF(out, "\n - normal_type_cache: ");
  normal_type_cache()->ShortPrint(out);
}


void PolymorphicCodeCache::PolymorphicCodeCachePrint(FILE* out) {
  HeapObject::PrintHeader(out, "PolymorphicCodeCache");
  PrintF(out, "\n - cache: ");
  cache()->ShortPrint(out);
}


void TypeFeedbackInfo::TypeFeedbackInfoPrint(FILE* out) {
  HeapObject::PrintHeader(out, "TypeFeedbackInfo");
  PrintF(out, "\n - ic_total_count: %d, ic_with_type_info_count: %d",
         ic_total_count(), ic_with_type_info_count());
  PrintF(out, "\n - type_feedback_cells: ");
  type_feedback_cells()->FixedArrayPrint(out);
}


void AliasedArgumentsEntry::AliasedArgumentsEntryPrint(FILE* out) {
  HeapObject::PrintHeader(out, "AliasedArgumentsEntry");
  PrintF(out, "\n - aliased_context_slot: %d", aliased_context_slot());
}


void FixedArray::FixedArrayPrint(FILE* out) {
  HeapObject::PrintHeader(out, "FixedArray");
  PrintF(out, " - length: %d", length());
  for (int i = 0; i < length(); i++) {
    PrintF(out, "\n  [%d]: ", i);
    get(i)->ShortPrint(out);
  }
  PrintF(out, "\n");
}


void FixedDoubleArray::FixedDoubleArrayPrint(FILE* out) {
  HeapObject::PrintHeader(out, "FixedDoubleArray");
  PrintF(out, " - length: %d", length());
  for (int i = 0; i < length(); i++) {
    if (is_the_hole(i)) {
      PrintF(out, "\n  [%d]: <the hole>", i);
    } else {
      PrintF(out, "\n  [%d]: %g", i, get_scalar(i));
    }
  }
  PrintF(out, "\n");
}


void JSValue::JSValuePrint(FILE* out) {
  HeapObject::PrintHeader(out, "ValueObject");
  value()->Print(out);
}


void JSMessageObject::JSMessageObjectPrint(FILE* out) {
  HeapObject::PrintHeader(out, "JSMessageObject");
  PrintF(out, " - type: ");
  type()->ShortPrint(out);
  PrintF(out, "\n - arguments: ");
  arguments()->ShortPrint(out);
  PrintF(out, "\n - start_position: %d", start_position());
  PrintF(out, "\n - end_position: %d", end_position());
  PrintF(out, "\n - script: ");
  script()->ShortPrint(out);
  PrintF(out, "\n - stack_trace: ");
  stack_trace()->ShortPrint(out);
  PrintF(out, "\n - stack_frames: ");
  stack_frames()->ShortPrint(out);
  PrintF(out, "\n");
}


void String::StringPrint(FILE* out) {
  if (StringShape(this).IsSymbol()) {
    PrintF(out, "#");
  } else if (StringShape(this).IsCons()) {
    PrintF(out, "c\"");
  } else {
    PrintF(out, "\"");
  }

  const char truncated_epilogue[] = "...<truncated>";
  int len = length();
  if (!FLAG_use_verbose_printer) {
    if (len > 100) {
      len = 100 - sizeof(truncated_epilogue);
    }
  }
  for (int i = 0; i < len; i++) {
    PrintF(out, "%c", Get(i));
  }
  if (len != length()) {
    PrintF(out, "%s", truncated_epilogue);
  }

  if (!StringShape(this).IsSymbol()) PrintF(out, "\"");
}


// This method is only meant to be called from gdb for debugging purposes.
// Since the string can also be in two-byte encoding, non-ASCII characters
// will be ignored in the output.
char* String::ToAsciiArray() {
  // Static so that subsequent calls frees previously allocated space.
  // This also means that previous results will be overwritten.
  static char* buffer = NULL;
  if (buffer != NULL) free(buffer);
  buffer = new char[length()+1];
  WriteToFlat(this, buffer, 0, length());
  buffer[length()] = 0;
  return buffer;
}


static const char* const weekdays[] = {
  "???", "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
};

void JSDate::JSDatePrint(FILE* out) {
  HeapObject::PrintHeader(out, "JSDate");
  PrintF(out, " - map = 0x%p\n", reinterpret_cast<void*>(map()));
  PrintF(out, " - value = ");
  value()->Print(out);
  if (!year()->IsSmi()) {
    PrintF(out, " - time = NaN\n");
  } else {
    PrintF(out, " - time = %s %04d/%02d/%02d %02d:%02d:%02d\n",
           weekdays[weekday()->IsSmi() ? Smi::cast(weekday())->value() + 1 : 0],
           year()->IsSmi() ? Smi::cast(year())->value() : -1,
           month()->IsSmi() ? Smi::cast(month())->value() : -1,
           day()->IsSmi() ? Smi::cast(day())->value() : -1,
           hour()->IsSmi() ? Smi::cast(hour())->value() : -1,
           min()->IsSmi() ? Smi::cast(min())->value() : -1,
           sec()->IsSmi() ? Smi::cast(sec())->value() : -1);
  }
}


void JSProxy::JSProxyPrint(FILE* out) {
  HeapObject::PrintHeader(out, "JSProxy");
  PrintF(out, " - map = 0x%p\n", reinterpret_cast<void*>(map()));
  PrintF(out, " - handler = ");
  handler()->Print(out);
  PrintF(out, " - hash = ");
  hash()->Print(out);
  PrintF(out, "\n");
}


void JSFunctionProxy::JSFunctionProxyPrint(FILE* out) {
  HeapObject::PrintHeader(out, "JSFunctionProxy");
  PrintF(out, " - map = 0x%p\n", reinterpret_cast<void*>(map()));
  PrintF(out, " - handler = ");
  handler()->Print(out);
  PrintF(out, " - call_trap = ");
  call_trap()->Print(out);
  PrintF(out, " - construct_trap = ");
  construct_trap()->Print(out);
  PrintF(out, "\n");
}


void JSWeakMap::JSWeakMapPrint(FILE* out) {
  HeapObject::PrintHeader(out, "JSWeakMap");
  PrintF(out, " - map = 0x%p\n", reinterpret_cast<void*>(map()));
  PrintF(out, " - table = ");
  table()->ShortPrint(out);
  PrintF(out, "\n");
}


void JSFunction::JSFunctionPrint(FILE* out) {
  HeapObject::PrintHeader(out, "Function");
  PrintF(out, " - map = 0x%p\n", reinterpret_cast<void*>(map()));
  PrintF(out, " - initial_map = ");
  if (has_initial_map()) {
    initial_map()->ShortPrint(out);
  }
  PrintF(out, "\n - shared_info = ");
  shared()->ShortPrint(out);
  PrintF(out, "\n   - name = ");
  shared()->name()->Print(out);
  PrintF(out, "\n - context = ");
  unchecked_context()->ShortPrint(out);
  PrintF(out, "\n - literals = ");
  literals()->ShortPrint(out);
  PrintF(out, "\n - code = ");
  code()->ShortPrint(out);
  PrintF(out, "\n");

  PrintProperties(out);
  PrintElements(out);

  PrintF(out, "\n");
}


void SharedFunctionInfo::SharedFunctionInfoPrint(FILE* out) {
  HeapObject::PrintHeader(out, "SharedFunctionInfo");
  PrintF(out, " - name: ");
  name()->ShortPrint(out);
  PrintF(out, "\n - expected_nof_properties: %d", expected_nof_properties());
  PrintF(out, "\n - instance class name = ");
  instance_class_name()->Print(out);
  PrintF(out, "\n - code = ");
  code()->ShortPrint(out);
  if (HasSourceCode()) {
    PrintF(out, "\n - source code = ");
    GetSourceCode()->ShortPrint(out);
  }
  // Script files are often large, hard to read.
  // PrintF(out, "\n - script =");
  // script()->Print(out);
  PrintF(out, "\n - function token position = %d", function_token_position());
  PrintF(out, "\n - start position = %d", start_position());
  PrintF(out, "\n - end position = %d", end_position());
  PrintF(out, "\n - is expression = %d", is_expression());
  PrintF(out, "\n - debug info = ");
  debug_info()->ShortPrint(out);
  PrintF(out, "\n - length = %d", length());
  PrintF(out, "\n - has_only_simple_this_property_assignments = %d",
         has_only_simple_this_property_assignments());
  PrintF(out, "\n - this_property_assignments = ");
  this_property_assignments()->ShortPrint(out);
  PrintF(out, "\n");
}


void JSGlobalProxy::JSGlobalProxyPrint(FILE* out) {
  PrintF(out, "global_proxy");
  JSObjectPrint(out);
  PrintF(out, "context : ");
  context()->ShortPrint(out);
  PrintF(out, "\n");
}


void JSGlobalObject::JSGlobalObjectPrint(FILE* out) {
  PrintF(out, "global ");
  JSObjectPrint(out);
  PrintF(out, "global context : ");
  global_context()->ShortPrint(out);
  PrintF(out, "\n");
}


void JSBuiltinsObject::JSBuiltinsObjectPrint(FILE* out) {
  PrintF(out, "builtins ");
  JSObjectPrint(out);
}


void JSGlobalPropertyCell::JSGlobalPropertyCellPrint(FILE* out) {
  HeapObject::PrintHeader(out, "JSGlobalPropertyCell");
}


void Code::CodePrint(FILE* out) {
  HeapObject::PrintHeader(out, "Code");
#ifdef ENABLE_DISASSEMBLER
  if (FLAG_use_verbose_printer) {
    Disassemble(NULL, out);
  }
#endif
}


void Foreign::ForeignPrint(FILE* out) {
  PrintF(out, "foreign address : %p", foreign_address());
}


void AccessorInfo::AccessorInfoPrint(FILE* out) {
  HeapObject::PrintHeader(out, "AccessorInfo");
  PrintF(out, "\n - getter: ");
  getter()->ShortPrint(out);
  PrintF(out, "\n - setter: ");
  setter()->ShortPrint(out);
  PrintF(out, "\n - name: ");
  name()->ShortPrint(out);
  PrintF(out, "\n - data: ");
  data()->ShortPrint(out);
  PrintF(out, "\n - flag: ");
  flag()->ShortPrint(out);
}


void AccessorPair::AccessorPairPrint(FILE* out) {
  HeapObject::PrintHeader(out, "AccessorPair");
  PrintF(out, "\n - getter: ");
  getter()->ShortPrint(out);
  PrintF(out, "\n - setter: ");
  setter()->ShortPrint(out);
}


void AccessCheckInfo::AccessCheckInfoPrint(FILE* out) {
  HeapObject::PrintHeader(out, "AccessCheckInfo");
  PrintF(out, "\n - named_callback: ");
  named_callback()->ShortPrint(out);
  PrintF(out, "\n - indexed_callback: ");
  indexed_callback()->ShortPrint(out);
  PrintF(out, "\n - data: ");
  data()->ShortPrint(out);
}


void InterceptorInfo::InterceptorInfoPrint(FILE* out) {
  HeapObject::PrintHeader(out, "InterceptorInfo");
  PrintF(out, "\n - getter: ");
  getter()->ShortPrint(out);
  PrintF(out, "\n - setter: ");
  setter()->ShortPrint(out);
  PrintF(out, "\n - query: ");
  query()->ShortPrint(out);
  PrintF(out, "\n - deleter: ");
  deleter()->ShortPrint(out);
  PrintF(out, "\n - enumerator: ");
  enumerator()->ShortPrint(out);
  PrintF(out, "\n - data: ");
  data()->ShortPrint(out);
}


void CallHandlerInfo::CallHandlerInfoPrint(FILE* out) {
  HeapObject::PrintHeader(out, "CallHandlerInfo");
  PrintF(out, "\n - callback: ");
  callback()->ShortPrint(out);
  PrintF(out, "\n - data: ");
  data()->ShortPrint(out);
  PrintF(out, "\n - call_stub_cache: ");
}


void FunctionTemplateInfo::FunctionTemplateInfoPrint(FILE* out) {
  HeapObject::PrintHeader(out, "FunctionTemplateInfo");
  PrintF(out, "\n - class name: ");
  class_name()->ShortPrint(out);
  PrintF(out, "\n - tag: ");
  tag()->ShortPrint(out);
  PrintF(out, "\n - property_list: ");
  property_list()->ShortPrint(out);
  PrintF(out, "\n - serial_number: ");
  serial_number()->ShortPrint(out);
  PrintF(out, "\n - call_code: ");
  call_code()->ShortPrint(out);
  PrintF(out, "\n - property_accessors: ");
  property_accessors()->ShortPrint(out);
  PrintF(out, "\n - prototype_template: ");
  prototype_template()->ShortPrint(out);
  PrintF(out, "\n - parent_template: ");
  parent_template()->ShortPrint(out);
  PrintF(out, "\n - named_property_handler: ");
  named_property_handler()->ShortPrint(out);
  PrintF(out, "\n - indexed_property_handler: ");
  indexed_property_handler()->ShortPrint(out);
  PrintF(out, "\n - instance_template: ");
  instance_template()->ShortPrint(out);
  PrintF(out, "\n - signature: ");
  signature()->ShortPrint(out);
  PrintF(out, "\n - access_check_info: ");
  access_check_info()->ShortPrint(out);
  PrintF(out, "\n - hidden_prototype: %s",
         hidden_prototype() ? "true" : "false");
  PrintF(out, "\n - undetectable: %s", undetectable() ? "true" : "false");
  PrintF(out, "\n - need_access_check: %s",
         needs_access_check() ? "true" : "false");
}


void ObjectTemplateInfo::ObjectTemplateInfoPrint(FILE* out) {
  HeapObject::PrintHeader(out, "ObjectTemplateInfo");
  PrintF(out, " - tag: ");
  tag()->ShortPrint(out);
  PrintF(out, "\n - property_list: ");
  property_list()->ShortPrint(out);
  PrintF(out, "\n - constructor: ");
  constructor()->ShortPrint(out);
  PrintF(out, "\n - internal_field_count: ");
  internal_field_count()->ShortPrint(out);
  PrintF(out, "\n");
}


void SignatureInfo::SignatureInfoPrint(FILE* out) {
  HeapObject::PrintHeader(out, "SignatureInfo");
  PrintF(out, "\n - receiver: ");
  receiver()->ShortPrint(out);
  PrintF(out, "\n - args: ");
  args()->ShortPrint(out);
}


void TypeSwitchInfo::TypeSwitchInfoPrint(FILE* out) {
  HeapObject::PrintHeader(out, "TypeSwitchInfo");
  PrintF(out, "\n - types: ");
  types()->ShortPrint(out);
}


void Script::ScriptPrint(FILE* out) {
  HeapObject::PrintHeader(out, "Script");
  PrintF(out, "\n - source: ");
  source()->ShortPrint(out);
  PrintF(out, "\n - name: ");
  name()->ShortPrint(out);
  PrintF(out, "\n - line_offset: ");
  line_offset()->ShortPrint(out);
  PrintF(out, "\n - column_offset: ");
  column_offset()->ShortPrint(out);
  PrintF(out, "\n - type: ");
  type()->ShortPrint(out);
  PrintF(out, "\n - id: ");
  id()->ShortPrint(out);
  PrintF(out, "\n - data: ");
  data()->ShortPrint(out);
  PrintF(out, "\n - context data: ");
  context_data()->ShortPrint(out);
  PrintF(out, "\n - wrapper: ");
  wrapper()->ShortPrint(out);
  PrintF(out, "\n - compilation type: ");
  compilation_type()->ShortPrint(out);
  PrintF(out, "\n - line ends: ");
  line_ends()->ShortPrint(out);
  PrintF(out, "\n - eval from shared: ");
  eval_from_shared()->ShortPrint(out);
  PrintF(out, "\n - eval from instructions offset: ");
  eval_from_instructions_offset()->ShortPrint(out);
  PrintF(out, "\n");
}


#ifdef ENABLE_DEBUGGER_SUPPORT
void DebugInfo::DebugInfoPrint(FILE* out) {
  HeapObject::PrintHeader(out, "DebugInfo");
  PrintF(out, "\n - shared: ");
  shared()->ShortPrint(out);
  PrintF(out, "\n - original_code: ");
  original_code()->ShortPrint(out);
  PrintF(out, "\n - code: ");
  code()->ShortPrint(out);
  PrintF(out, "\n - break_points: ");
  break_points()->Print(out);
}


void BreakPointInfo::BreakPointInfoPrint(FILE* out) {
  HeapObject::PrintHeader(out, "BreakPointInfo");
  PrintF(out, "\n - code_position: %d", code_position()->value());
  PrintF(out, "\n - source_position: %d", source_position()->value());
  PrintF(out, "\n - statement_position: %d", statement_position()->value());
  PrintF(out, "\n - break_point_objects: ");
  break_point_objects()->ShortPrint(out);
}
#endif  // ENABLE_DEBUGGER_SUPPORT


void DescriptorArray::PrintDescriptors(FILE* out) {
  PrintF(out, "Descriptor array  %d\n", number_of_descriptors());
  for (int i = 0; i < number_of_descriptors(); i++) {
    PrintF(out, " %d: ", i);
    Descriptor desc;
    Get(i, &desc);
    desc.Print(out);
  }
  PrintF(out, "\n");
}


void TransitionArray::PrintTransitions(FILE* out) {
  PrintF(out, "Transition array  %d\n", number_of_transitions());
  for (int i = 0; i < number_of_transitions(); i++) {
    PrintF(out, " %d: ", i);
    GetKey(i)->StringPrint(out);
    PrintF(out, ": ");
    switch (GetTargetDetails(i).type()) {
      case FIELD: {
        PrintF(out, " (transition to field)\n");
        break;
      }
      case CONSTANT_FUNCTION:
        PrintF(out, " (transition to constant function)\n");
        break;
      case CALLBACKS:
        PrintF(out, " (transition to callback)\n");
        break;
      // Values below are never in the target descriptor array.
      case NORMAL:
      case HANDLER:
      case INTERCEPTOR:
      case TRANSITION:
      case NONEXISTENT:
        UNREACHABLE();
        break;
    }
  }
  PrintF(out, "\n");
}


#endif  // OBJECT_PRINT


} }  // namespace v8::internal