Initial import.

1 files changed, 8182 insertions, 0 deletions

diff --git a/chromium/v8/src/api.cc b/chromium/v8/src/api.cc
new file mode 100644
index 00000000000..eb2ffcff180
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+++ b/chromium/v8/src/api.cc
@@ -0,0 +1,8182 @@
+// 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 "api.h"
+
+#include <string.h>  // For memcpy, strlen.
+#include <cmath>  // For isnan.
+#include "../include/v8-debug.h"
+#include "../include/v8-profiler.h"
+#include "../include/v8-testing.h"
+#include "assert-scope.h"
+#include "bootstrapper.h"
+#include "code-stubs.h"
+#include "compiler.h"
+#include "conversions-inl.h"
+#include "counters.h"
+#include "cpu-profiler.h"
+#include "debug.h"
+#include "deoptimizer.h"
+#include "execution.h"
+#include "global-handles.h"
+#include "heap-profiler.h"
+#include "heap-snapshot-generator-inl.h"
+#include "icu_util.h"
+#include "json-parser.h"
+#include "messages.h"
+#ifdef COMPRESS_STARTUP_DATA_BZ2
+#include "natives.h"
+#endif
+#include "parser.h"
+#include "platform.h"
+#include "profile-generator-inl.h"
+#include "property-details.h"
+#include "property.h"
+#include "runtime.h"
+#include "runtime-profiler.h"
+#include "scanner-character-streams.h"
+#include "snapshot.h"
+#include "unicode-inl.h"
+#include "v8threads.h"
+#include "version.h"
+#include "vm-state-inl.h"
+
+
+#define LOG_API(isolate, expr) LOG(isolate, ApiEntryCall(expr))
+
+#define ENTER_V8(isolate)                                          \
+  ASSERT((isolate)->IsInitialized());                              \
+  i::VMState<i::OTHER> __state__((isolate))
+
+namespace v8 {
+
+#define ON_BAILOUT(isolate, location, code)                        \
+  if (IsDeadCheck(isolate, location) ||                            \
+      IsExecutionTerminatingCheck(isolate)) {                      \
+    code;                                                          \
+    UNREACHABLE();                                                 \
+  }
+
+
+#define EXCEPTION_PREAMBLE(isolate)                                         \
+  (isolate)->handle_scope_implementer()->IncrementCallDepth();              \
+  ASSERT(!(isolate)->external_caught_exception());                          \
+  bool has_pending_exception = false
+
+
+#define EXCEPTION_BAILOUT_CHECK_GENERIC(isolate, value, do_callback)           \
+  do {                                                                         \
+    i::HandleScopeImplementer* handle_scope_implementer =                      \
+        (isolate)->handle_scope_implementer();                                 \
+    handle_scope_implementer->DecrementCallDepth();                            \
+    if (has_pending_exception) {                                               \
+      if (handle_scope_implementer->CallDepthIsZero() &&                       \
+          (isolate)->is_out_of_memory()) {                                     \
+        if (!(isolate)->ignore_out_of_memory())                                \
+          i::V8::FatalProcessOutOfMemory(NULL);                                \
+      }                                                                        \
+      bool call_depth_is_zero = handle_scope_implementer->CallDepthIsZero();   \
+      (isolate)->OptionalRescheduleException(call_depth_is_zero);              \
+      do_callback                                                              \
+      return value;                                                            \
+    }                                                                          \
+    do_callback                                                                \
+  } while (false)
+
+
+#define EXCEPTION_BAILOUT_CHECK_DO_CALLBACK(isolate, value)                    \
+  EXCEPTION_BAILOUT_CHECK_GENERIC(                                             \
+      isolate, value, i::V8::FireCallCompletedCallback(isolate);)
+
+
+#define EXCEPTION_BAILOUT_CHECK(isolate, value)                                \
+  EXCEPTION_BAILOUT_CHECK_GENERIC(isolate, value, ;)
+
+
+#define API_ENTRY_CHECK(isolate, msg)                                          \
+  do {                                                                         \
+    if (v8::Locker::IsActive()) {                                              \
+      ApiCheck(isolate->thread_manager()->IsLockedByCurrentThread(),           \
+               msg,                                                            \
+               "Entering the V8 API without proper locking in place");         \
+    }                                                                          \
+  } while (false)
+
+
+// --- E x c e p t i o n   B e h a v i o r ---
+
+
+static void DefaultFatalErrorHandler(const char* location,
+                                     const char* message) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (isolate->IsInitialized()) {
+    i::VMState<i::OTHER> state(isolate);
+    API_Fatal(location, message);
+  } else {
+    API_Fatal(location, message);
+  }
+}
+
+
+static FatalErrorCallback GetFatalErrorHandler() {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (isolate->exception_behavior() == NULL) {
+    isolate->set_exception_behavior(DefaultFatalErrorHandler);
+  }
+  return isolate->exception_behavior();
+}
+
+
+void i::FatalProcessOutOfMemory(const char* location) {
+  i::V8::FatalProcessOutOfMemory(location, false);
+}
+
+
+// When V8 cannot allocated memory FatalProcessOutOfMemory is called.
+// The default fatal error handler is called and execution is stopped.
+void i::V8::FatalProcessOutOfMemory(const char* location, bool take_snapshot) {
+  i::HeapStats heap_stats;
+  int start_marker;
+  heap_stats.start_marker = &start_marker;
+  int new_space_size;
+  heap_stats.new_space_size = &new_space_size;
+  int new_space_capacity;
+  heap_stats.new_space_capacity = &new_space_capacity;
+  intptr_t old_pointer_space_size;
+  heap_stats.old_pointer_space_size = &old_pointer_space_size;
+  intptr_t old_pointer_space_capacity;
+  heap_stats.old_pointer_space_capacity = &old_pointer_space_capacity;
+  intptr_t old_data_space_size;
+  heap_stats.old_data_space_size = &old_data_space_size;
+  intptr_t old_data_space_capacity;
+  heap_stats.old_data_space_capacity = &old_data_space_capacity;
+  intptr_t code_space_size;
+  heap_stats.code_space_size = &code_space_size;
+  intptr_t code_space_capacity;
+  heap_stats.code_space_capacity = &code_space_capacity;
+  intptr_t map_space_size;
+  heap_stats.map_space_size = &map_space_size;
+  intptr_t map_space_capacity;
+  heap_stats.map_space_capacity = &map_space_capacity;
+  intptr_t cell_space_size;
+  heap_stats.cell_space_size = &cell_space_size;
+  intptr_t cell_space_capacity;
+  heap_stats.cell_space_capacity = &cell_space_capacity;
+  intptr_t property_cell_space_size;
+  heap_stats.property_cell_space_size = &property_cell_space_size;
+  intptr_t property_cell_space_capacity;
+  heap_stats.property_cell_space_capacity = &property_cell_space_capacity;
+  intptr_t lo_space_size;
+  heap_stats.lo_space_size = &lo_space_size;
+  int global_handle_count;
+  heap_stats.global_handle_count = &global_handle_count;
+  int weak_global_handle_count;
+  heap_stats.weak_global_handle_count = &weak_global_handle_count;
+  int pending_global_handle_count;
+  heap_stats.pending_global_handle_count = &pending_global_handle_count;
+  int near_death_global_handle_count;
+  heap_stats.near_death_global_handle_count = &near_death_global_handle_count;
+  int free_global_handle_count;
+  heap_stats.free_global_handle_count = &free_global_handle_count;
+  intptr_t memory_allocator_size;
+  heap_stats.memory_allocator_size = &memory_allocator_size;
+  intptr_t memory_allocator_capacity;
+  heap_stats.memory_allocator_capacity = &memory_allocator_capacity;
+  int objects_per_type[LAST_TYPE + 1] = {0};
+  heap_stats.objects_per_type = objects_per_type;
+  int size_per_type[LAST_TYPE + 1] = {0};
+  heap_stats.size_per_type = size_per_type;
+  int os_error;
+  heap_stats.os_error = &os_error;
+  int end_marker;
+  heap_stats.end_marker = &end_marker;
+  i::Isolate* isolate = i::Isolate::Current();
+  if (isolate->heap()->HasBeenSetUp()) {
+    // BUG(1718): Don't use the take_snapshot since we don't support
+    // HeapIterator here without doing a special GC.
+    isolate->heap()->RecordStats(&heap_stats, false);
+  }
+  i::V8::SetFatalError();
+  FatalErrorCallback callback = GetFatalErrorHandler();
+  const char* message = "Allocation failed - process out of memory";
+  callback(location, message);
+  // If the callback returns, we stop execution.
+  UNREACHABLE();
+}
+
+
+bool Utils::ReportApiFailure(const char* location, const char* message) {
+  FatalErrorCallback callback = GetFatalErrorHandler();
+  callback(location, message);
+  i::V8::SetFatalError();
+  return false;
+}
+
+
+bool V8::IsDead() {
+  return i::V8::IsDead();
+}
+
+
+static inline bool ApiCheck(bool condition,
+                            const char* location,
+                            const char* message) {
+  return condition ? true : Utils::ReportApiFailure(location, message);
+}
+
+
+static bool ReportV8Dead(const char* location) {
+  FatalErrorCallback callback = GetFatalErrorHandler();
+  callback(location, "V8 is no longer usable");
+  return true;
+}
+
+
+static bool ReportEmptyHandle(const char* location) {
+  FatalErrorCallback callback = GetFatalErrorHandler();
+  callback(location, "Reading from empty handle");
+  return true;
+}
+
+
+/**
+ * IsDeadCheck checks that the vm is usable.  If, for instance, the vm has been
+ * out of memory at some point this check will fail.  It should be called on
+ * entry to all methods that touch anything in the heap, except destructors
+ * which you sometimes can't avoid calling after the vm has crashed.  Functions
+ * that call EnsureInitialized or ON_BAILOUT don't have to also call
+ * IsDeadCheck.  ON_BAILOUT has the advantage over EnsureInitialized that you
+ * can arrange to return if the VM is dead.  This is needed to ensure that no VM
+ * heap allocations are attempted on a dead VM.  EnsureInitialized has the
+ * advantage over ON_BAILOUT that it actually initializes the VM if this has not
+ * yet been done.
+ */
+static inline bool IsDeadCheck(i::Isolate* isolate, const char* location) {
+  return !isolate->IsInitialized()
+      && i::V8::IsDead() ? ReportV8Dead(location) : false;
+}
+
+
+static inline bool IsExecutionTerminatingCheck(i::Isolate* isolate) {
+  if (!isolate->IsInitialized()) return false;
+  if (isolate->has_scheduled_exception()) {
+    return isolate->scheduled_exception() ==
+        isolate->heap()->termination_exception();
+  }
+  return false;
+}
+
+
+static inline bool EmptyCheck(const char* location, v8::Handle<v8::Data> obj) {
+  return obj.IsEmpty() ? ReportEmptyHandle(location) : false;
+}
+
+
+static inline bool EmptyCheck(const char* location, const v8::Data* obj) {
+  return (obj == 0) ? ReportEmptyHandle(location) : false;
+}
+
+
+// --- S t a t i c s ---
+
+
+static bool InitializeHelper(i::Isolate* isolate) {
+  // If the isolate has a function entry hook, it needs to re-build all its
+  // code stubs with entry hooks embedded, so let's deserialize a snapshot.
+  if (isolate == NULL || isolate->function_entry_hook() == NULL) {
+    if (i::Snapshot::Initialize())
+      return true;
+  }
+  return i::V8::Initialize(NULL);
+}
+
+
+static inline bool EnsureInitializedForIsolate(i::Isolate* isolate,
+                                               const char* location) {
+  if (IsDeadCheck(isolate, location)) return false;
+  if (isolate != NULL) {
+    if (isolate->IsInitialized()) return true;
+  }
+  ASSERT(isolate == i::Isolate::Current());
+  return ApiCheck(InitializeHelper(isolate), location, "Error initializing V8");
+}
+
+
+// Some initializing API functions are called early and may be
+// called on a thread different from static initializer thread.
+// If Isolate API is used, Isolate::Enter() will initialize TLS so
+// Isolate::Current() works. If it's a legacy case, then the thread
+// may not have TLS initialized yet. However, in initializing APIs it
+// may be too early to call EnsureInitialized() - some pre-init
+// parameters still have to be configured.
+static inline i::Isolate* EnterIsolateIfNeeded() {
+  i::Isolate* isolate = i::Isolate::UncheckedCurrent();
+  if (isolate != NULL)
+    return isolate;
+
+  i::Isolate::EnterDefaultIsolate();
+  isolate = i::Isolate::Current();
+  return isolate;
+}
+
+
+StartupDataDecompressor::StartupDataDecompressor()
+    : raw_data(i::NewArray<char*>(V8::GetCompressedStartupDataCount())) {
+  for (int i = 0; i < V8::GetCompressedStartupDataCount(); ++i) {
+    raw_data[i] = NULL;
+  }
+}
+
+
+StartupDataDecompressor::~StartupDataDecompressor() {
+  for (int i = 0; i < V8::GetCompressedStartupDataCount(); ++i) {
+    i::DeleteArray(raw_data[i]);
+  }
+  i::DeleteArray(raw_data);
+}
+
+
+int StartupDataDecompressor::Decompress() {
+  int compressed_data_count = V8::GetCompressedStartupDataCount();
+  StartupData* compressed_data =
+      i::NewArray<StartupData>(compressed_data_count);
+  V8::GetCompressedStartupData(compressed_data);
+  for (int i = 0; i < compressed_data_count; ++i) {
+    char* decompressed = raw_data[i] =
+        i::NewArray<char>(compressed_data[i].raw_size);
+    if (compressed_data[i].compressed_size != 0) {
+      int result = DecompressData(decompressed,
+                                  &compressed_data[i].raw_size,
+                                  compressed_data[i].data,
+                                  compressed_data[i].compressed_size);
+      if (result != 0) return result;
+    } else {
+      ASSERT_EQ(0, compressed_data[i].raw_size);
+    }
+    compressed_data[i].data = decompressed;
+  }
+  V8::SetDecompressedStartupData(compressed_data);
+  i::DeleteArray(compressed_data);
+  return 0;
+}
+
+
+StartupData::CompressionAlgorithm V8::GetCompressedStartupDataAlgorithm() {
+#ifdef COMPRESS_STARTUP_DATA_BZ2
+  return StartupData::kBZip2;
+#else
+  return StartupData::kUncompressed;
+#endif
+}
+
+
+enum CompressedStartupDataItems {
+  kSnapshot = 0,
+  kSnapshotContext,
+  kLibraries,
+  kExperimentalLibraries,
+#if defined(V8_I18N_SUPPORT)
+  kI18NExtension,
+#endif
+  kCompressedStartupDataCount
+};
+
+
+int V8::GetCompressedStartupDataCount() {
+#ifdef COMPRESS_STARTUP_DATA_BZ2
+  return kCompressedStartupDataCount;
+#else
+  return 0;
+#endif
+}
+
+
+void V8::GetCompressedStartupData(StartupData* compressed_data) {
+#ifdef COMPRESS_STARTUP_DATA_BZ2
+  compressed_data[kSnapshot].data =
+      reinterpret_cast<const char*>(i::Snapshot::data());
+  compressed_data[kSnapshot].compressed_size = i::Snapshot::size();
+  compressed_data[kSnapshot].raw_size = i::Snapshot::raw_size();
+
+  compressed_data[kSnapshotContext].data =
+      reinterpret_cast<const char*>(i::Snapshot::context_data());
+  compressed_data[kSnapshotContext].compressed_size =
+      i::Snapshot::context_size();
+  compressed_data[kSnapshotContext].raw_size = i::Snapshot::context_raw_size();
+
+  i::Vector<const i::byte> libraries_source = i::Natives::GetScriptsSource();
+  compressed_data[kLibraries].data =
+      reinterpret_cast<const char*>(libraries_source.start());
+  compressed_data[kLibraries].compressed_size = libraries_source.length();
+  compressed_data[kLibraries].raw_size = i::Natives::GetRawScriptsSize();
+
+  i::Vector<const i::byte> exp_libraries_source =
+      i::ExperimentalNatives::GetScriptsSource();
+  compressed_data[kExperimentalLibraries].data =
+      reinterpret_cast<const char*>(exp_libraries_source.start());
+  compressed_data[kExperimentalLibraries].compressed_size =
+      exp_libraries_source.length();
+  compressed_data[kExperimentalLibraries].raw_size =
+      i::ExperimentalNatives::GetRawScriptsSize();
+
+#if defined(V8_I18N_SUPPORT)
+  i::Vector<const ii:byte> i18n_extension_source =
+      i::I18NNatives::GetScriptsSource();
+  compressed_data[kI18NExtension].data =
+      reinterpret_cast<const char*>(i18n_extension_source.start());
+  compressed_data[kI18NExtension].compressed_size =
+      i18n_extension_source.length();
+  compressed_data[kI18NExtension].raw_size =
+      i::I18NNatives::GetRawScriptsSize();
+#endif
+#endif
+}
+
+
+void V8::SetDecompressedStartupData(StartupData* decompressed_data) {
+#ifdef COMPRESS_STARTUP_DATA_BZ2
+  ASSERT_EQ(i::Snapshot::raw_size(), decompressed_data[kSnapshot].raw_size);
+  i::Snapshot::set_raw_data(
+      reinterpret_cast<const i::byte*>(decompressed_data[kSnapshot].data));
+
+  ASSERT_EQ(i::Snapshot::context_raw_size(),
+            decompressed_data[kSnapshotContext].raw_size);
+  i::Snapshot::set_context_raw_data(
+      reinterpret_cast<const i::byte*>(
+          decompressed_data[kSnapshotContext].data));
+
+  ASSERT_EQ(i::Natives::GetRawScriptsSize(),
+            decompressed_data[kLibraries].raw_size);
+  i::Vector<const char> libraries_source(
+      decompressed_data[kLibraries].data,
+      decompressed_data[kLibraries].raw_size);
+  i::Natives::SetRawScriptsSource(libraries_source);
+
+  ASSERT_EQ(i::ExperimentalNatives::GetRawScriptsSize(),
+            decompressed_data[kExperimentalLibraries].raw_size);
+  i::Vector<const char> exp_libraries_source(
+      decompressed_data[kExperimentalLibraries].data,
+      decompressed_data[kExperimentalLibraries].raw_size);
+  i::ExperimentalNatives::SetRawScriptsSource(exp_libraries_source);
+
+#if defined(V8_I18N_SUPPORT)
+  ASSERT_EQ(i::I18NNatives::GetRawScriptsSize(),
+            decompressed_data[kI18NExtension].raw_size);
+  i::Vector<const char> i18n_extension_source(
+      decompressed_data[kI18NExtension].data,
+      decompressed_data[kI18NExtension].raw_size);
+  i::I18NNatives::SetRawScriptsSource(i18n_extension_source);
+#endif
+#endif
+}
+
+
+void V8::SetFatalErrorHandler(FatalErrorCallback that) {
+  i::Isolate* isolate = EnterIsolateIfNeeded();
+  isolate->set_exception_behavior(that);
+}
+
+
+void V8::SetAllowCodeGenerationFromStringsCallback(
+    AllowCodeGenerationFromStringsCallback callback) {
+  i::Isolate* isolate = EnterIsolateIfNeeded();
+  isolate->set_allow_code_gen_callback(callback);
+}
+
+
+void V8::SetFlagsFromString(const char* str, int length) {
+  i::FlagList::SetFlagsFromString(str, length);
+}
+
+
+void V8::SetFlagsFromCommandLine(int* argc, char** argv, bool remove_flags) {
+  i::FlagList::SetFlagsFromCommandLine(argc, argv, remove_flags);
+}
+
+
+v8::Handle<Value> ThrowException(v8::Handle<v8::Value> value) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::ThrowException()")) {
+    return v8::Handle<Value>();
+  }
+  ENTER_V8(isolate);
+  // If we're passed an empty handle, we throw an undefined exception
+  // to deal more gracefully with out of memory situations.
+  if (value.IsEmpty()) {
+    isolate->ScheduleThrow(isolate->heap()->undefined_value());
+  } else {
+    isolate->ScheduleThrow(*Utils::OpenHandle(*value));
+  }
+  return v8::Undefined();
+}
+
+
+RegisteredExtension* RegisteredExtension::first_extension_ = NULL;
+
+
+RegisteredExtension::RegisteredExtension(Extension* extension)
+    : extension_(extension) { }
+
+
+void RegisteredExtension::Register(RegisteredExtension* that) {
+  that->next_ = first_extension_;
+  first_extension_ = that;
+}
+
+
+void RegisteredExtension::UnregisterAll() {
+  RegisteredExtension* re = first_extension_;
+  while (re != NULL) {
+    RegisteredExtension* next = re->next();
+    delete re;
+    re = next;
+  }
+}
+
+
+void RegisterExtension(Extension* that) {
+  RegisteredExtension* extension = new RegisteredExtension(that);
+  RegisteredExtension::Register(extension);
+}
+
+
+Extension::Extension(const char* name,
+                     const char* source,
+                     int dep_count,
+                     const char** deps,
+                     int source_length)
+    : name_(name),
+      source_length_(source_length >= 0 ?
+                     source_length :
+                     (source ? static_cast<int>(strlen(source)) : 0)),
+      source_(source, source_length_),
+      dep_count_(dep_count),
+      deps_(deps),
+      auto_enable_(false) {
+  CHECK(source != NULL || source_length_ == 0);
+}
+
+
+v8::Handle<Primitive> Undefined() {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (!EnsureInitializedForIsolate(isolate, "v8::Undefined()")) {
+    return v8::Handle<v8::Primitive>();
+  }
+  return ToApiHandle<Primitive>(isolate->factory()->undefined_value());
+}
+
+
+v8::Handle<Primitive> Null() {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (!EnsureInitializedForIsolate(isolate, "v8::Null()")) {
+    return v8::Handle<v8::Primitive>();
+  }
+  return ToApiHandle<Primitive>(isolate->factory()->null_value());
+}
+
+
+v8::Handle<Boolean> True() {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (!EnsureInitializedForIsolate(isolate, "v8::True()")) {
+    return v8::Handle<Boolean>();
+  }
+  return ToApiHandle<Boolean>(isolate->factory()->true_value());
+}
+
+
+v8::Handle<Boolean> False() {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (!EnsureInitializedForIsolate(isolate, "v8::False()")) {
+    return v8::Handle<Boolean>();
+  }
+  return ToApiHandle<Boolean>(isolate->factory()->false_value());
+}
+
+
+ResourceConstraints::ResourceConstraints()
+  : max_young_space_size_(0),
+    max_old_space_size_(0),
+    max_executable_size_(0),
+    stack_limit_(NULL) { }
+
+
+bool SetResourceConstraints(ResourceConstraints* constraints) {
+  i::Isolate* isolate = EnterIsolateIfNeeded();
+
+  int young_space_size = constraints->max_young_space_size();
+  int old_gen_size = constraints->max_old_space_size();
+  int max_executable_size = constraints->max_executable_size();
+  if (young_space_size != 0 || old_gen_size != 0 || max_executable_size != 0) {
+    // After initialization it's too late to change Heap constraints.
+    ASSERT(!isolate->IsInitialized());
+    bool result = isolate->heap()->ConfigureHeap(young_space_size / 2,
+                                                 old_gen_size,
+                                                 max_executable_size);
+    if (!result) return false;
+  }
+  if (constraints->stack_limit() != NULL) {
+    uintptr_t limit = reinterpret_cast<uintptr_t>(constraints->stack_limit());
+    isolate->stack_guard()->SetStackLimit(limit);
+  }
+  return true;
+}
+
+
+i::Object** V8::GlobalizeReference(i::Isolate* isolate, i::Object** obj) {
+  if (IsDeadCheck(isolate, "V8::Persistent::New")) return NULL;
+  LOG_API(isolate, "Persistent::New");
+  i::Handle<i::Object> result = isolate->global_handles()->Create(*obj);
+#ifdef DEBUG
+  (*obj)->Verify();
+#endif  // DEBUG
+  return result.location();
+}
+
+
+void V8::MakeWeak(i::Object** object,
+                  void* parameters,
+                  RevivableCallback weak_reference_callback) {
+  i::GlobalHandles::MakeWeak(object,
+                             parameters,
+                             weak_reference_callback);
+}
+
+
+void V8::ClearWeak(i::Object** obj) {
+  i::GlobalHandles::ClearWeakness(obj);
+}
+
+
+void V8::DisposeGlobal(i::Object** obj) {
+  i::GlobalHandles::Destroy(obj);
+}
+
+
+int V8::Eternalize(i::Isolate* isolate, i::Object** handle) {
+  return isolate->eternal_handles()->Create(isolate, *handle);
+}
+
+
+i::Object** V8::GetEternal(i::Isolate* isolate, int index) {
+  return isolate->eternal_handles()->Get(index).location();
+}
+
+
+// --- H a n d l e s ---
+
+
+HandleScope::HandleScope() {
+  Initialize(reinterpret_cast<Isolate*>(i::Isolate::Current()));
+}
+
+
+HandleScope::HandleScope(Isolate* isolate) {
+  Initialize(isolate);
+}
+
+
+void HandleScope::Initialize(Isolate* isolate) {
+  i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
+  API_ENTRY_CHECK(internal_isolate, "HandleScope::HandleScope");
+  v8::ImplementationUtilities::HandleScopeData* current =
+      internal_isolate->handle_scope_data();
+  isolate_ = internal_isolate;
+  prev_next_ = current->next;
+  prev_limit_ = current->limit;
+  is_closed_ = false;
+  current->level++;
+}
+
+
+HandleScope::~HandleScope() {
+  if (!is_closed_) {
+    Leave();
+  }
+}
+
+
+void HandleScope::Leave() {
+  return i::HandleScope::CloseScope(isolate_, prev_next_, prev_limit_);
+}
+
+
+int HandleScope::NumberOfHandles() {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (!EnsureInitializedForIsolate(isolate, "HandleScope::NumberOfHandles")) {
+    return 0;
+  }
+  return i::HandleScope::NumberOfHandles(isolate);
+}
+
+
+i::Object** HandleScope::CreateHandle(i::Object* value) {
+  return i::HandleScope::CreateHandle(i::Isolate::Current(), value);
+}
+
+
+i::Object** HandleScope::CreateHandle(i::Isolate* isolate, i::Object* value) {
+  ASSERT(isolate == i::Isolate::Current());
+  return i::HandleScope::CreateHandle(isolate, value);
+}
+
+
+i::Object** HandleScope::CreateHandle(i::HeapObject* value) {
+  ASSERT(value->IsHeapObject());
+  return reinterpret_cast<i::Object**>(
+      i::HandleScope::CreateHandle(value->GetIsolate(), value));
+}
+
+
+void Context::Enter() {
+  i::Handle<i::Context> env = Utils::OpenHandle(this);
+  i::Isolate* isolate = env->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::Context::Enter()")) return;
+  ENTER_V8(isolate);
+
+  isolate->handle_scope_implementer()->EnterContext(env);
+
+  isolate->handle_scope_implementer()->SaveContext(isolate->context());
+  isolate->set_context(*env);
+}
+
+
+void Context::Exit() {
+  // Exit is essentially a static function and doesn't use the
+  // receiver, so we have to get the current isolate from the thread
+  // local.
+  i::Isolate* isolate = i::Isolate::Current();
+  if (!isolate->IsInitialized()) return;
+
+  if (!ApiCheck(isolate->handle_scope_implementer()->LeaveLastContext(),
+                "v8::Context::Exit()",
+                "Cannot exit non-entered context")) {
+    return;
+  }
+
+  // Content of 'last_context' could be NULL.
+  i::Context* last_context =
+      isolate->handle_scope_implementer()->RestoreContext();
+  isolate->set_context(last_context);
+}
+
+
+static void* DecodeSmiToAligned(i::Object* value, const char* location) {
+  ApiCheck(value->IsSmi(), location, "Not a Smi");
+  return reinterpret_cast<void*>(value);
+}
+
+
+static i::Smi* EncodeAlignedAsSmi(void* value, const char* location) {
+  i::Smi* smi = reinterpret_cast<i::Smi*>(value);
+  ApiCheck(smi->IsSmi(), location, "Pointer is not aligned");
+  return smi;
+}
+
+
+static i::Handle<i::FixedArray> EmbedderDataFor(Context* context,
+                                                int index,
+                                                bool can_grow,
+                                                const char* location) {
+  i::Handle<i::Context> env = Utils::OpenHandle(context);
+  bool ok = !IsDeadCheck(env->GetIsolate(), location) &&
+      ApiCheck(env->IsNativeContext(), location, "Not a native context") &&
+      ApiCheck(index >= 0, location, "Negative index");
+  if (!ok) return i::Handle<i::FixedArray>();
+  i::Handle<i::FixedArray> data(env->embedder_data());
+  if (index < data->length()) return data;
+  if (!can_grow) {
+    Utils::ReportApiFailure(location, "Index too large");
+    return i::Handle<i::FixedArray>();
+  }
+  int new_size = i::Max(index, data->length() << 1) + 1;
+  data = env->GetIsolate()->factory()->CopySizeFixedArray(data, new_size);
+  env->set_embedder_data(*data);
+  return data;
+}
+
+
+v8::Local<v8::Value> Context::SlowGetEmbedderData(int index) {
+  const char* location = "v8::Context::GetEmbedderData()";
+  i::Handle<i::FixedArray> data = EmbedderDataFor(this, index, false, location);
+  if (data.is_null()) return Local<Value>();
+  i::Handle<i::Object> result(data->get(index), data->GetIsolate());
+  return Utils::ToLocal(result);
+}
+
+
+void Context::SetEmbedderData(int index, v8::Handle<Value> value) {
+  const char* location = "v8::Context::SetEmbedderData()";
+  i::Handle<i::FixedArray> data = EmbedderDataFor(this, index, true, location);
+  if (data.is_null()) return;
+  i::Handle<i::Object> val = Utils::OpenHandle(*value);
+  data->set(index, *val);
+  ASSERT_EQ(*Utils::OpenHandle(*value),
+            *Utils::OpenHandle(*GetEmbedderData(index)));
+}
+
+
+void* Context::SlowGetAlignedPointerFromEmbedderData(int index) {
+  const char* location = "v8::Context::GetAlignedPointerFromEmbedderData()";
+  i::Handle<i::FixedArray> data = EmbedderDataFor(this, index, false, location);
+  if (data.is_null()) return NULL;
+  return DecodeSmiToAligned(data->get(index), location);
+}
+
+
+void Context::SetAlignedPointerInEmbedderData(int index, void* value) {
+  const char* location = "v8::Context::SetAlignedPointerInEmbedderData()";
+  i::Handle<i::FixedArray> data = EmbedderDataFor(this, index, true, location);
+  data->set(index, EncodeAlignedAsSmi(value, location));
+  ASSERT_EQ(value, GetAlignedPointerFromEmbedderData(index));
+}
+
+
+i::Object** v8::HandleScope::RawClose(i::Object** value) {
+  if (!ApiCheck(!is_closed_,
+                "v8::HandleScope::Close()",
+                "Local scope has already been closed")) {
+    return 0;
+  }
+  LOG_API(isolate_, "CloseHandleScope");
+
+  // Read the result before popping the handle block.
+  i::Object* result = NULL;
+  if (value != NULL) {
+    result = *value;
+  }
+  is_closed_ = true;
+  Leave();
+
+  if (value == NULL) {
+    return NULL;
+  }
+
+  // Allocate a new handle on the previous handle block.
+  i::Handle<i::Object> handle(result, isolate_);
+  return handle.location();
+}
+
+
+// --- N e a n d e r ---
+
+
+// A constructor cannot easily return an error value, therefore it is necessary
+// to check for a dead VM with ON_BAILOUT before constructing any Neander
+// objects.  To remind you about this there is no HandleScope in the
+// NeanderObject constructor.  When you add one to the site calling the
+// constructor you should check that you ensured the VM was not dead first.
+NeanderObject::NeanderObject(int size) {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate, "v8::Nowhere");
+  ENTER_V8(isolate);
+  value_ = isolate->factory()->NewNeanderObject();
+  i::Handle<i::FixedArray> elements = isolate->factory()->NewFixedArray(size);
+  value_->set_elements(*elements);
+}
+
+
+int NeanderObject::size() {
+  return i::FixedArray::cast(value_->elements())->length();
+}
+
+
+NeanderArray::NeanderArray() : obj_(2) {
+  obj_.set(0, i::Smi::FromInt(0));
+}
+
+
+int NeanderArray::length() {
+  return i::Smi::cast(obj_.get(0))->value();
+}
+
+
+i::Object* NeanderArray::get(int offset) {
+  ASSERT(0 <= offset);
+  ASSERT(offset < length());
+  return obj_.get(offset + 1);
+}
+
+
+// This method cannot easily return an error value, therefore it is necessary
+// to check for a dead VM with ON_BAILOUT before calling it.  To remind you
+// about this there is no HandleScope in this method.  When you add one to the
+// site calling this method you should check that you ensured the VM was not
+// dead first.
+void NeanderArray::add(i::Handle<i::Object> value) {
+  int length = this->length();
+  int size = obj_.size();
+  if (length == size - 1) {
+    i::Factory* factory = i::Isolate::Current()->factory();
+    i::Handle<i::FixedArray> new_elms = factory->NewFixedArray(2 * size);
+    for (int i = 0; i < length; i++)
+      new_elms->set(i + 1, get(i));
+    obj_.value()->set_elements(*new_elms);
+  }
+  obj_.set(length + 1, *value);
+  obj_.set(0, i::Smi::FromInt(length + 1));
+}
+
+
+void NeanderArray::set(int index, i::Object* value) {
+  if (index < 0 || index >= this->length()) return;
+  obj_.set(index + 1, value);
+}
+
+
+// --- T e m p l a t e ---
+
+
+static void InitializeTemplate(i::Handle<i::TemplateInfo> that, int type) {
+  that->set_tag(i::Smi::FromInt(type));
+}
+
+
+void Template::Set(v8::Handle<String> name, v8::Handle<Data> value,
+                   v8::PropertyAttribute attribute) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::Template::Set()")) return;
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::Object> list(Utils::OpenHandle(this)->property_list(), isolate);
+  if (list->IsUndefined()) {
+    list = NeanderArray().value();
+    Utils::OpenHandle(this)->set_property_list(*list);
+  }
+  NeanderArray array(list);
+  array.add(Utils::OpenHandle(*name));
+  array.add(Utils::OpenHandle(*value));
+  array.add(Utils::OpenHandle(*v8::Integer::New(attribute)));
+}
+
+
+// --- F u n c t i o n   T e m p l a t e ---
+static void InitializeFunctionTemplate(
+      i::Handle<i::FunctionTemplateInfo> info) {
+  info->set_tag(i::Smi::FromInt(Consts::FUNCTION_TEMPLATE));
+  info->set_flag(0);
+}
+
+
+Local<ObjectTemplate> FunctionTemplate::PrototypeTemplate() {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::FunctionTemplate::PrototypeTemplate()")) {
+    return Local<ObjectTemplate>();
+  }
+  ENTER_V8(isolate);
+  i::Handle<i::Object> result(Utils::OpenHandle(this)->prototype_template(),
+                              isolate);
+  if (result->IsUndefined()) {
+    result = Utils::OpenHandle(*ObjectTemplate::New());
+    Utils::OpenHandle(this)->set_prototype_template(*result);
+  }
+  return ToApiHandle<ObjectTemplate>(result);
+}
+
+
+void FunctionTemplate::Inherit(v8::Handle<FunctionTemplate> value) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::FunctionTemplate::Inherit()")) return;
+  ENTER_V8(isolate);
+  Utils::OpenHandle(this)->set_parent_template(*Utils::OpenHandle(*value));
+}
+
+
+// TODO(dcarney): Remove this abstraction when old callbacks are removed.
+class CallHandlerHelper {
+ public:
+  static inline void Set(Local<FunctionTemplate> function_template,
+                         InvocationCallback callback,
+                         v8::Handle<Value> data) {
+    function_template->SetCallHandlerInternal(callback, data);
+  }
+  static inline void Set(Local<FunctionTemplate> function_template,
+                         FunctionCallback callback,
+                         v8::Handle<Value> data) {
+    function_template->SetCallHandler(callback, data);
+  }
+};
+
+
+template<typename Callback>
+static Local<FunctionTemplate> FunctionTemplateNew(
+    Callback callback,
+    v8::Handle<Value> data,
+    v8::Handle<Signature> signature,
+    int length) {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate, "v8::FunctionTemplate::New()");
+  LOG_API(isolate, "FunctionTemplate::New");
+  ENTER_V8(isolate);
+  i::Handle<i::Struct> struct_obj =
+      isolate->factory()->NewStruct(i::FUNCTION_TEMPLATE_INFO_TYPE);
+  i::Handle<i::FunctionTemplateInfo> obj =
+      i::Handle<i::FunctionTemplateInfo>::cast(struct_obj);
+  InitializeFunctionTemplate(obj);
+  int next_serial_number = isolate->next_serial_number();
+  isolate->set_next_serial_number(next_serial_number + 1);
+  obj->set_serial_number(i::Smi::FromInt(next_serial_number));
+  if (callback != 0) {
+    if (data.IsEmpty()) data = v8::Undefined();
+    CallHandlerHelper::Set(Utils::ToLocal(obj), callback, data);
+  }
+  obj->set_length(length);
+  obj->set_undetectable(false);
+  obj->set_needs_access_check(false);
+
+  if (!signature.IsEmpty())
+    obj->set_signature(*Utils::OpenHandle(*signature));
+  return Utils::ToLocal(obj);
+}
+
+
+Local<FunctionTemplate> FunctionTemplate::New(
+    InvocationCallback callback,
+    v8::Handle<Value> data,
+    v8::Handle<Signature> signature,
+    int length) {
+  return FunctionTemplateNew(callback, data, signature, length);
+}
+
+
+Local<FunctionTemplate> FunctionTemplate::New(
+    FunctionCallback callback,
+    v8::Handle<Value> data,
+    v8::Handle<Signature> signature,
+    int length) {
+  return FunctionTemplateNew(callback, data, signature, length);
+}
+
+
+Local<Signature> Signature::New(Handle<FunctionTemplate> receiver,
+      int argc, Handle<FunctionTemplate> argv[]) {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate, "v8::Signature::New()");
+  LOG_API(isolate, "Signature::New");
+  ENTER_V8(isolate);
+  i::Handle<i::Struct> struct_obj =
+      isolate->factory()->NewStruct(i::SIGNATURE_INFO_TYPE);
+  i::Handle<i::SignatureInfo> obj =
+      i::Handle<i::SignatureInfo>::cast(struct_obj);
+  if (!receiver.IsEmpty()) obj->set_receiver(*Utils::OpenHandle(*receiver));
+  if (argc > 0) {
+    i::Handle<i::FixedArray> args = isolate->factory()->NewFixedArray(argc);
+    for (int i = 0; i < argc; i++) {
+      if (!argv[i].IsEmpty())
+        args->set(i, *Utils::OpenHandle(*argv[i]));
+    }
+    obj->set_args(*args);
+  }
+  return Utils::ToLocal(obj);
+}
+
+
+Local<AccessorSignature> AccessorSignature::New(
+      Handle<FunctionTemplate> receiver) {
+  return Utils::AccessorSignatureToLocal(Utils::OpenHandle(*receiver));
+}
+
+
+template<typename Operation>
+static Local<Operation> NewDescriptor(
+    Isolate* isolate,
+    const i::DeclaredAccessorDescriptorData& data,
+    Data* previous_descriptor) {
+  i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
+  i::Handle<i::DeclaredAccessorDescriptor> previous =
+      i::Handle<i::DeclaredAccessorDescriptor>();
+  if (previous_descriptor != NULL) {
+    previous = Utils::OpenHandle(
+      static_cast<DeclaredAccessorDescriptor*>(previous_descriptor));
+  }
+  i::Handle<i::DeclaredAccessorDescriptor> descriptor =
+      i::DeclaredAccessorDescriptor::Create(internal_isolate, data, previous);
+  return Utils::Convert<i::DeclaredAccessorDescriptor, Operation>(descriptor);
+}
+
+
+Local<RawOperationDescriptor>
+  ObjectOperationDescriptor::NewInternalFieldDereference(
+    Isolate* isolate,
+    int internal_field) {
+  i::DeclaredAccessorDescriptorData data;
+  data.type = i::kDescriptorObjectDereference;
+  data.object_dereference_descriptor.internal_field = internal_field;
+  return NewDescriptor<RawOperationDescriptor>(isolate, data, NULL);
+}
+
+
+Local<RawOperationDescriptor> RawOperationDescriptor::NewRawShift(
+    Isolate* isolate,
+    int16_t byte_offset) {
+  i::DeclaredAccessorDescriptorData data;
+  data.type = i::kDescriptorPointerShift;
+  data.pointer_shift_descriptor.byte_offset = byte_offset;
+  return NewDescriptor<RawOperationDescriptor>(isolate, data, this);
+}
+
+
+Local<DeclaredAccessorDescriptor> RawOperationDescriptor::NewHandleDereference(
+    Isolate* isolate) {
+  i::DeclaredAccessorDescriptorData data;
+  data.type = i::kDescriptorReturnObject;
+  return NewDescriptor<DeclaredAccessorDescriptor>(isolate, data, this);
+}
+
+
+Local<RawOperationDescriptor> RawOperationDescriptor::NewRawDereference(
+    Isolate* isolate) {
+  i::DeclaredAccessorDescriptorData data;
+  data.type = i::kDescriptorPointerDereference;
+  return NewDescriptor<RawOperationDescriptor>(isolate, data, this);
+}
+
+
+Local<DeclaredAccessorDescriptor> RawOperationDescriptor::NewPointerCompare(
+    Isolate* isolate,
+    void* compare_value) {
+  i::DeclaredAccessorDescriptorData data;
+  data.type = i::kDescriptorPointerCompare;
+  data.pointer_compare_descriptor.compare_value = compare_value;
+  return NewDescriptor<DeclaredAccessorDescriptor>(isolate, data, this);
+}
+
+
+Local<DeclaredAccessorDescriptor> RawOperationDescriptor::NewPrimitiveValue(
+    Isolate* isolate,
+    DeclaredAccessorDescriptorDataType data_type,
+    uint8_t bool_offset) {
+  i::DeclaredAccessorDescriptorData data;
+  data.type = i::kDescriptorPrimitiveValue;
+  data.primitive_value_descriptor.data_type = data_type;
+  data.primitive_value_descriptor.bool_offset = bool_offset;
+  return NewDescriptor<DeclaredAccessorDescriptor>(isolate, data, this);
+}
+
+
+template<typename T>
+static Local<DeclaredAccessorDescriptor> NewBitmaskCompare(
+    Isolate* isolate,
+    T bitmask,
+    T compare_value,
+    RawOperationDescriptor* operation) {
+  i::DeclaredAccessorDescriptorData data;
+  data.type = i::kDescriptorBitmaskCompare;
+  data.bitmask_compare_descriptor.bitmask = bitmask;
+  data.bitmask_compare_descriptor.compare_value = compare_value;
+  data.bitmask_compare_descriptor.size = sizeof(T);
+  return NewDescriptor<DeclaredAccessorDescriptor>(isolate, data, operation);
+}
+
+
+Local<DeclaredAccessorDescriptor> RawOperationDescriptor::NewBitmaskCompare8(
+    Isolate* isolate,
+    uint8_t bitmask,
+    uint8_t compare_value) {
+  return NewBitmaskCompare(isolate, bitmask, compare_value, this);
+}
+
+
+Local<DeclaredAccessorDescriptor> RawOperationDescriptor::NewBitmaskCompare16(
+    Isolate* isolate,
+    uint16_t bitmask,
+    uint16_t compare_value) {
+  return NewBitmaskCompare(isolate, bitmask, compare_value, this);
+}
+
+
+Local<DeclaredAccessorDescriptor> RawOperationDescriptor::NewBitmaskCompare32(
+    Isolate* isolate,
+    uint32_t bitmask,
+    uint32_t compare_value) {
+  return NewBitmaskCompare(isolate, bitmask, compare_value, this);
+}
+
+
+Local<TypeSwitch> TypeSwitch::New(Handle<FunctionTemplate> type) {
+  Handle<FunctionTemplate> types[1] = { type };
+  return TypeSwitch::New(1, types);
+}
+
+
+Local<TypeSwitch> TypeSwitch::New(int argc, Handle<FunctionTemplate> types[]) {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate, "v8::TypeSwitch::New()");
+  LOG_API(isolate, "TypeSwitch::New");
+  ENTER_V8(isolate);
+  i::Handle<i::FixedArray> vector = isolate->factory()->NewFixedArray(argc);
+  for (int i = 0; i < argc; i++)
+    vector->set(i, *Utils::OpenHandle(*types[i]));
+  i::Handle<i::Struct> struct_obj =
+      isolate->factory()->NewStruct(i::TYPE_SWITCH_INFO_TYPE);
+  i::Handle<i::TypeSwitchInfo> obj =
+      i::Handle<i::TypeSwitchInfo>::cast(struct_obj);
+  obj->set_types(*vector);
+  return Utils::ToLocal(obj);
+}
+
+
+int TypeSwitch::match(v8::Handle<Value> value) {
+  i::Isolate* isolate = i::Isolate::Current();
+  LOG_API(isolate, "TypeSwitch::match");
+  USE(isolate);
+  i::Handle<i::Object> obj = Utils::OpenHandle(*value);
+  i::Handle<i::TypeSwitchInfo> info = Utils::OpenHandle(this);
+  i::FixedArray* types = i::FixedArray::cast(info->types());
+  for (int i = 0; i < types->length(); i++) {
+    if (obj->IsInstanceOf(i::FunctionTemplateInfo::cast(types->get(i))))
+      return i + 1;
+  }
+  return 0;
+}
+
+
+#define SET_FIELD_WRAPPED(obj, setter, cdata) do {    \
+    i::Handle<i::Object> foreign = FromCData(cdata);  \
+    (obj)->setter(*foreign);                          \
+  } while (false)
+
+
+template<typename Callback>
+static void FunctionTemplateSetCallHandler(FunctionTemplate* function_template,
+                                           Callback callback_in,
+                                           v8::Handle<Value> data) {
+  i::Isolate* isolate = Utils::OpenHandle(function_template)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::FunctionTemplate::SetCallHandler()")) return;
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::Struct> struct_obj =
+      isolate->factory()->NewStruct(i::CALL_HANDLER_INFO_TYPE);
+  i::Handle<i::CallHandlerInfo> obj =
+      i::Handle<i::CallHandlerInfo>::cast(struct_obj);
+  FunctionCallback callback =
+      i::CallbackTable::Register(isolate, callback_in);
+  SET_FIELD_WRAPPED(obj, set_callback, callback);
+  if (data.IsEmpty()) data = v8::Undefined();
+  obj->set_data(*Utils::OpenHandle(*data));
+  Utils::OpenHandle(function_template)->set_call_code(*obj);
+}
+
+void FunctionTemplate::SetCallHandler(InvocationCallback callback,
+                                      v8::Handle<Value> data) {
+  FunctionTemplateSetCallHandler(this, callback, data);
+}
+
+void FunctionTemplate::SetCallHandlerInternal(InvocationCallback callback,
+                                              v8::Handle<Value> data) {
+  FunctionTemplateSetCallHandler(this, callback, data);
+}
+
+void FunctionTemplate::SetCallHandler(FunctionCallback callback,
+                                      v8::Handle<Value> data) {
+  FunctionTemplateSetCallHandler(this, callback, data);
+}
+
+static i::Handle<i::AccessorInfo> SetAccessorInfoProperties(
+    i::Handle<i::AccessorInfo> obj,
+    v8::Handle<String> name,
+    v8::AccessControl settings,
+    v8::PropertyAttribute attributes,
+    v8::Handle<AccessorSignature> signature) {
+  obj->set_name(*Utils::OpenHandle(*name));
+  if (settings & ALL_CAN_READ) obj->set_all_can_read(true);
+  if (settings & ALL_CAN_WRITE) obj->set_all_can_write(true);
+  if (settings & PROHIBITS_OVERWRITING) obj->set_prohibits_overwriting(true);
+  obj->set_property_attributes(static_cast<PropertyAttributes>(attributes));
+  if (!signature.IsEmpty()) {
+    obj->set_expected_receiver_type(*Utils::OpenHandle(*signature));
+  }
+  return obj;
+}
+
+
+template<typename Getter, typename Setter>
+static i::Handle<i::AccessorInfo> MakeAccessorInfo(
+      v8::Handle<String> name,
+      Getter getter_in,
+      Setter setter_in,
+      v8::Handle<Value> data,
+      v8::AccessControl settings,
+      v8::PropertyAttribute attributes,
+      v8::Handle<AccessorSignature> signature) {
+  i::Isolate* isolate = Utils::OpenHandle(*name)->GetIsolate();
+  i::Handle<i::ExecutableAccessorInfo> obj =
+      isolate->factory()->NewExecutableAccessorInfo();
+  AccessorGetterCallback getter =
+      i::CallbackTable::Register(isolate, getter_in);
+  SET_FIELD_WRAPPED(obj, set_getter, getter);
+  AccessorSetterCallback setter =
+      i::CallbackTable::Register(isolate, setter_in);
+  SET_FIELD_WRAPPED(obj, set_setter, setter);
+  if (data.IsEmpty()) data = v8::Undefined();
+  obj->set_data(*Utils::OpenHandle(*data));
+  return SetAccessorInfoProperties(obj, name, settings, attributes, signature);
+}
+
+
+static i::Handle<i::AccessorInfo> MakeAccessorInfo(
+      v8::Handle<String> name,
+      v8::Handle<v8::DeclaredAccessorDescriptor> descriptor,
+      void* setter_ignored,
+      void* data_ignored,
+      v8::AccessControl settings,
+      v8::PropertyAttribute attributes,
+      v8::Handle<AccessorSignature> signature) {
+  i::Isolate* isolate = Utils::OpenHandle(*name)->GetIsolate();
+  if (descriptor.IsEmpty()) return i::Handle<i::DeclaredAccessorInfo>();
+  i::Handle<i::DeclaredAccessorInfo> obj =
+      isolate->factory()->NewDeclaredAccessorInfo();
+  obj->set_descriptor(*Utils::OpenHandle(*descriptor));
+  return SetAccessorInfoProperties(obj, name, settings, attributes, signature);
+}
+
+
+Local<ObjectTemplate> FunctionTemplate::InstanceTemplate() {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::FunctionTemplate::InstanceTemplate()")
+      || EmptyCheck("v8::FunctionTemplate::InstanceTemplate()", this))
+    return Local<ObjectTemplate>();
+  ENTER_V8(isolate);
+  i::Handle<i::FunctionTemplateInfo> handle = Utils::OpenHandle(this);
+  if (handle->instance_template()->IsUndefined()) {
+    Local<ObjectTemplate> templ =
+        ObjectTemplate::New(ToApiHandle<FunctionTemplate>(handle));
+    handle->set_instance_template(*Utils::OpenHandle(*templ));
+  }
+  i::Handle<i::ObjectTemplateInfo> result(
+      i::ObjectTemplateInfo::cast(handle->instance_template()));
+  return Utils::ToLocal(result);
+}
+
+
+void FunctionTemplate::SetLength(int length) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::FunctionTemplate::SetLength()")) return;
+  ENTER_V8(isolate);
+  Utils::OpenHandle(this)->set_length(length);
+}
+
+
+void FunctionTemplate::SetClassName(Handle<String> name) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::FunctionTemplate::SetClassName()")) return;
+  ENTER_V8(isolate);
+  Utils::OpenHandle(this)->set_class_name(*Utils::OpenHandle(*name));
+}
+
+
+void FunctionTemplate::SetHiddenPrototype(bool value) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::FunctionTemplate::SetHiddenPrototype()")) {
+    return;
+  }
+  ENTER_V8(isolate);
+  Utils::OpenHandle(this)->set_hidden_prototype(value);
+}
+
+
+void FunctionTemplate::ReadOnlyPrototype() {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::FunctionTemplate::ReadOnlyPrototype()")) {
+    return;
+  }
+  ENTER_V8(isolate);
+  Utils::OpenHandle(this)->set_read_only_prototype(true);
+}
+
+template<
+    typename Getter,
+    typename Setter,
+    typename Query,
+    typename Deleter,
+    typename Enumerator>
+static void SetNamedInstancePropertyHandler(
+      i::Handle<i::FunctionTemplateInfo> function_template,
+      Getter getter_in,
+      Setter setter_in,
+      Query query_in,
+      Deleter remover_in,
+      Enumerator enumerator_in,
+      Handle<Value> data) {
+  i::Isolate* isolate = function_template->GetIsolate();
+  if (IsDeadCheck(isolate,
+                  "v8::FunctionTemplate::SetNamedInstancePropertyHandler()")) {
+    return;
+  }
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::Struct> struct_obj =
+      isolate->factory()->NewStruct(i::INTERCEPTOR_INFO_TYPE);
+  i::Handle<i::InterceptorInfo> obj =
+      i::Handle<i::InterceptorInfo>::cast(struct_obj);
+
+  NamedPropertyGetterCallback getter =
+      i::CallbackTable::Register(isolate, getter_in);
+  if (getter != 0) SET_FIELD_WRAPPED(obj, set_getter, getter);
+  NamedPropertySetterCallback setter =
+      i::CallbackTable::Register(isolate, setter_in);
+  if (setter != 0) SET_FIELD_WRAPPED(obj, set_setter, setter);
+  NamedPropertyQueryCallback query =
+      i::CallbackTable::Register(isolate, query_in);
+  if (query != 0) SET_FIELD_WRAPPED(obj, set_query, query);
+  NamedPropertyDeleterCallback remover =
+      i::CallbackTable::Register(isolate, remover_in);
+  if (remover != 0) SET_FIELD_WRAPPED(obj, set_deleter, remover);
+  NamedPropertyEnumeratorCallback enumerator =
+      i::CallbackTable::Register(isolate, enumerator_in);
+  if (enumerator != 0) SET_FIELD_WRAPPED(obj, set_enumerator, enumerator);
+
+  if (data.IsEmpty()) data = v8::Undefined();
+  obj->set_data(*Utils::OpenHandle(*data));
+  function_template->set_named_property_handler(*obj);
+}
+
+
+template<
+    typename Getter,
+    typename Setter,
+    typename Query,
+    typename Deleter,
+    typename Enumerator>
+static void SetIndexedInstancePropertyHandler(
+      i::Handle<i::FunctionTemplateInfo> function_template,
+      Getter getter_in,
+      Setter setter_in,
+      Query query_in,
+      Deleter remover_in,
+      Enumerator enumerator_in,
+      Handle<Value> data) {
+  i::Isolate* isolate = function_template->GetIsolate();
+  if (IsDeadCheck(isolate,
+        "v8::FunctionTemplate::SetIndexedInstancePropertyHandler()")) {
+    return;
+  }
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::Struct> struct_obj =
+      isolate->factory()->NewStruct(i::INTERCEPTOR_INFO_TYPE);
+  i::Handle<i::InterceptorInfo> obj =
+      i::Handle<i::InterceptorInfo>::cast(struct_obj);
+
+  IndexedPropertyGetterCallback getter =
+      i::CallbackTable::Register(isolate, getter_in);
+  if (getter != 0) SET_FIELD_WRAPPED(obj, set_getter, getter);
+  IndexedPropertySetterCallback setter =
+      i::CallbackTable::Register(isolate, setter_in);
+  if (setter != 0) SET_FIELD_WRAPPED(obj, set_setter, setter);
+  IndexedPropertyQueryCallback query =
+      i::CallbackTable::Register(isolate, query_in);
+  if (query != 0) SET_FIELD_WRAPPED(obj, set_query, query);
+  IndexedPropertyDeleterCallback remover =
+      i::CallbackTable::Register(isolate, remover_in);
+  if (remover != 0) SET_FIELD_WRAPPED(obj, set_deleter, remover);
+  IndexedPropertyEnumeratorCallback enumerator =
+      i::CallbackTable::Register(isolate, enumerator_in);
+  if (enumerator != 0) SET_FIELD_WRAPPED(obj, set_enumerator, enumerator);
+
+  if (data.IsEmpty()) data = v8::Undefined();
+  obj->set_data(*Utils::OpenHandle(*data));
+  function_template->set_indexed_property_handler(*obj);
+}
+
+
+template<typename Callback>
+static void SetInstanceCallAsFunctionHandler(
+      i::Handle<i::FunctionTemplateInfo> function_template,
+      Callback callback_in,
+      Handle<Value> data) {
+  i::Isolate* isolate = function_template->GetIsolate();
+  if (IsDeadCheck(isolate,
+                  "v8::FunctionTemplate::SetInstanceCallAsFunctionHandler()")) {
+    return;
+  }
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::Struct> struct_obj =
+      isolate->factory()->NewStruct(i::CALL_HANDLER_INFO_TYPE);
+  i::Handle<i::CallHandlerInfo> obj =
+      i::Handle<i::CallHandlerInfo>::cast(struct_obj);
+  FunctionCallback callback =
+      i::CallbackTable::Register(isolate, callback_in);
+  SET_FIELD_WRAPPED(obj, set_callback, callback);
+  if (data.IsEmpty()) data = v8::Undefined();
+  obj->set_data(*Utils::OpenHandle(*data));
+  function_template->set_instance_call_handler(*obj);
+}
+
+
+// --- O b j e c t T e m p l a t e ---
+
+
+Local<ObjectTemplate> ObjectTemplate::New() {
+  return New(Local<FunctionTemplate>());
+}
+
+
+Local<ObjectTemplate> ObjectTemplate::New(
+      v8::Handle<FunctionTemplate> constructor) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::ObjectTemplate::New()")) {
+    return Local<ObjectTemplate>();
+  }
+  EnsureInitializedForIsolate(isolate, "v8::ObjectTemplate::New()");
+  LOG_API(isolate, "ObjectTemplate::New");
+  ENTER_V8(isolate);
+  i::Handle<i::Struct> struct_obj =
+      isolate->factory()->NewStruct(i::OBJECT_TEMPLATE_INFO_TYPE);
+  i::Handle<i::ObjectTemplateInfo> obj =
+      i::Handle<i::ObjectTemplateInfo>::cast(struct_obj);
+  InitializeTemplate(obj, Consts::OBJECT_TEMPLATE);
+  if (!constructor.IsEmpty())
+    obj->set_constructor(*Utils::OpenHandle(*constructor));
+  obj->set_internal_field_count(i::Smi::FromInt(0));
+  return Utils::ToLocal(obj);
+}
+
+
+// Ensure that the object template has a constructor.  If no
+// constructor is available we create one.
+static void EnsureConstructor(ObjectTemplate* object_template) {
+  if (Utils::OpenHandle(object_template)->constructor()->IsUndefined()) {
+    Local<FunctionTemplate> templ = FunctionTemplate::New();
+    i::Handle<i::FunctionTemplateInfo> constructor = Utils::OpenHandle(*templ);
+    constructor->set_instance_template(*Utils::OpenHandle(object_template));
+    Utils::OpenHandle(object_template)->set_constructor(*constructor);
+  }
+}
+
+
+static inline void AddPropertyToFunctionTemplate(
+    i::Handle<i::FunctionTemplateInfo> cons,
+    i::Handle<i::AccessorInfo> obj) {
+  i::Handle<i::Object> list(cons->property_accessors(), cons->GetIsolate());
+  if (list->IsUndefined()) {
+    list = NeanderArray().value();
+    cons->set_property_accessors(*list);
+  }
+  NeanderArray array(list);
+  array.add(obj);
+}
+
+
+template<typename Setter, typename Getter, typename Data>
+static bool ObjectTemplateSetAccessor(
+    ObjectTemplate* object_template,
+    v8::Handle<String> name,
+    Getter getter,
+    Setter setter,
+    Data data,
+    AccessControl settings,
+    PropertyAttribute attribute,
+    v8::Handle<AccessorSignature> signature) {
+  i::Isolate* isolate = Utils::OpenHandle(object_template)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::ObjectTemplate::SetAccessor()")) return false;
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  EnsureConstructor(object_template);
+  i::FunctionTemplateInfo* constructor = i::FunctionTemplateInfo::cast(
+      Utils::OpenHandle(object_template)->constructor());
+  i::Handle<i::FunctionTemplateInfo> cons(constructor);
+  i::Handle<i::AccessorInfo> obj = MakeAccessorInfo(
+      name, getter, setter, data, settings, attribute, signature);
+  if (obj.is_null()) return false;
+  AddPropertyToFunctionTemplate(cons, obj);
+  return true;
+}
+
+
+void ObjectTemplate::SetAccessor(v8::Handle<String> name,
+                                 AccessorGetter getter,
+                                 AccessorSetter setter,
+                                 v8::Handle<Value> data,
+                                 AccessControl settings,
+                                 PropertyAttribute attribute,
+                                 v8::Handle<AccessorSignature> signature) {
+  ObjectTemplateSetAccessor(
+      this, name, getter, setter, data, settings, attribute, signature);
+}
+
+
+void ObjectTemplate::SetAccessor(v8::Handle<String> name,
+                                 AccessorGetterCallback getter,
+                                 AccessorSetterCallback setter,
+                                 v8::Handle<Value> data,
+                                 AccessControl settings,
+                                 PropertyAttribute attribute,
+                                 v8::Handle<AccessorSignature> signature) {
+  ObjectTemplateSetAccessor(
+      this, name, getter, setter, data, settings, attribute, signature);
+}
+
+
+bool ObjectTemplate::SetAccessor(Handle<String> name,
+                                 Handle<DeclaredAccessorDescriptor> descriptor,
+                                 AccessControl settings,
+                                 PropertyAttribute attribute,
+                                 Handle<AccessorSignature> signature) {
+  void* null = NULL;
+  return ObjectTemplateSetAccessor(
+      this, name, descriptor, null, null, settings, attribute, signature);
+}
+
+
+template<
+    typename Getter,
+    typename Setter,
+    typename Query,
+    typename Deleter,
+    typename Enumerator>
+static void ObjectTemplateSetNamedPropertyHandler(
+    ObjectTemplate* object_template,
+    Getter getter,
+    Setter setter,
+    Query query,
+    Deleter remover,
+    Enumerator enumerator,
+    Handle<Value> data) {
+  i::Isolate* isolate = Utils::OpenHandle(object_template)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::ObjectTemplate::SetNamedPropertyHandler()")) {
+    return;
+  }
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  EnsureConstructor(object_template);
+  i::FunctionTemplateInfo* constructor = i::FunctionTemplateInfo::cast(
+      Utils::OpenHandle(object_template)->constructor());
+  i::Handle<i::FunctionTemplateInfo> cons(constructor);
+  SetNamedInstancePropertyHandler(cons,
+                                  getter,
+                                  setter,
+                                  query,
+                                  remover,
+                                  enumerator,
+                                  data);
+}
+
+
+void ObjectTemplate::SetNamedPropertyHandler(
+    NamedPropertyGetter getter,
+    NamedPropertySetter setter,
+    NamedPropertyQuery query,
+    NamedPropertyDeleter remover,
+    NamedPropertyEnumerator enumerator,
+    Handle<Value> data) {
+  ObjectTemplateSetNamedPropertyHandler(
+      this, getter, setter, query, remover, enumerator, data);
+}
+
+
+void ObjectTemplate::SetNamedPropertyHandler(
+    NamedPropertyGetterCallback getter,
+    NamedPropertySetterCallback setter,
+    NamedPropertyQueryCallback query,
+    NamedPropertyDeleterCallback remover,
+    NamedPropertyEnumeratorCallback enumerator,
+    Handle<Value> data) {
+  ObjectTemplateSetNamedPropertyHandler(
+      this, getter, setter, query, remover, enumerator, data);
+}
+
+
+void ObjectTemplate::MarkAsUndetectable() {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::ObjectTemplate::MarkAsUndetectable()")) return;
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  EnsureConstructor(this);
+  i::FunctionTemplateInfo* constructor =
+      i::FunctionTemplateInfo::cast(Utils::OpenHandle(this)->constructor());
+  i::Handle<i::FunctionTemplateInfo> cons(constructor);
+  cons->set_undetectable(true);
+}
+
+
+void ObjectTemplate::SetAccessCheckCallbacks(
+      NamedSecurityCallback named_callback,
+      IndexedSecurityCallback indexed_callback,
+      Handle<Value> data,
+      bool turned_on_by_default) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::ObjectTemplate::SetAccessCheckCallbacks()")) {
+    return;
+  }
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  EnsureConstructor(this);
+
+  i::Handle<i::Struct> struct_info =
+      isolate->factory()->NewStruct(i::ACCESS_CHECK_INFO_TYPE);
+  i::Handle<i::AccessCheckInfo> info =
+      i::Handle<i::AccessCheckInfo>::cast(struct_info);
+
+  SET_FIELD_WRAPPED(info, set_named_callback, named_callback);
+  SET_FIELD_WRAPPED(info, set_indexed_callback, indexed_callback);
+
+  if (data.IsEmpty()) data = v8::Undefined();
+  info->set_data(*Utils::OpenHandle(*data));
+
+  i::FunctionTemplateInfo* constructor =
+      i::FunctionTemplateInfo::cast(Utils::OpenHandle(this)->constructor());
+  i::Handle<i::FunctionTemplateInfo> cons(constructor);
+  cons->set_access_check_info(*info);
+  cons->set_needs_access_check(turned_on_by_default);
+}
+
+
+template<
+    typename Getter,
+    typename Setter,
+    typename Query,
+    typename Deleter,
+    typename Enumerator>
+void ObjectTemplateSetIndexedPropertyHandler(
+      ObjectTemplate* object_template,
+      Getter getter,
+      Setter setter,
+      Query query,
+      Deleter remover,
+      Enumerator enumerator,
+      Handle<Value> data) {
+  i::Isolate* isolate = Utils::OpenHandle(object_template)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::ObjectTemplate::SetIndexedPropertyHandler()")) {
+    return;
+  }
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  EnsureConstructor(object_template);
+  i::FunctionTemplateInfo* constructor = i::FunctionTemplateInfo::cast(
+      Utils::OpenHandle(object_template)->constructor());
+  i::Handle<i::FunctionTemplateInfo> cons(constructor);
+  SetIndexedInstancePropertyHandler(cons,
+                                    getter,
+                                    setter,
+                                    query,
+                                    remover,
+                                    enumerator,
+                                    data);
+}
+
+
+void ObjectTemplate::SetIndexedPropertyHandler(
+      IndexedPropertyGetter getter,
+      IndexedPropertySetter setter,
+      IndexedPropertyQuery query,
+      IndexedPropertyDeleter remover,
+      IndexedPropertyEnumerator enumerator,
+      Handle<Value> data) {
+  ObjectTemplateSetIndexedPropertyHandler(
+      this, getter, setter, query, remover, enumerator, data);
+}
+
+
+void ObjectTemplate::SetIndexedPropertyHandler(
+      IndexedPropertyGetterCallback getter,
+      IndexedPropertySetterCallback setter,
+      IndexedPropertyQueryCallback query,
+      IndexedPropertyDeleterCallback remover,
+      IndexedPropertyEnumeratorCallback enumerator,
+      Handle<Value> data) {
+  ObjectTemplateSetIndexedPropertyHandler(
+      this, getter, setter, query, remover, enumerator, data);
+}
+
+
+template<typename Callback>
+static void ObjectTemplateSetCallAsFunctionHandler(
+    ObjectTemplate* object_template,
+    Callback callback,
+    Handle<Value> data) {
+  i::Isolate* isolate = Utils::OpenHandle(object_template)->GetIsolate();
+  if (IsDeadCheck(isolate,
+                  "v8::ObjectTemplate::SetCallAsFunctionHandler()")) {
+    return;
+  }
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  EnsureConstructor(object_template);
+  i::FunctionTemplateInfo* constructor = i::FunctionTemplateInfo::cast(
+      Utils::OpenHandle(object_template)->constructor());
+  i::Handle<i::FunctionTemplateInfo> cons(constructor);
+  SetInstanceCallAsFunctionHandler(cons, callback, data);
+}
+
+
+void ObjectTemplate::SetCallAsFunctionHandler(InvocationCallback callback,
+                                              Handle<Value> data) {
+  return ObjectTemplateSetCallAsFunctionHandler(this, callback, data);
+}
+
+
+void ObjectTemplate::SetCallAsFunctionHandler(FunctionCallback callback,
+                                              Handle<Value> data) {
+  return ObjectTemplateSetCallAsFunctionHandler(this, callback, data);
+}
+
+
+int ObjectTemplate::InternalFieldCount() {
+  if (IsDeadCheck(Utils::OpenHandle(this)->GetIsolate(),
+                  "v8::ObjectTemplate::InternalFieldCount()")) {
+    return 0;
+  }
+  return i::Smi::cast(Utils::OpenHandle(this)->internal_field_count())->value();
+}
+
+
+void ObjectTemplate::SetInternalFieldCount(int value) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::ObjectTemplate::SetInternalFieldCount()")) {
+    return;
+  }
+  if (!ApiCheck(i::Smi::IsValid(value),
+                "v8::ObjectTemplate::SetInternalFieldCount()",
+                "Invalid internal field count")) {
+    return;
+  }
+  ENTER_V8(isolate);
+  if (value > 0) {
+    // The internal field count is set by the constructor function's
+    // construct code, so we ensure that there is a constructor
+    // function to do the setting.
+    EnsureConstructor(this);
+  }
+  Utils::OpenHandle(this)->set_internal_field_count(i::Smi::FromInt(value));
+}
+
+
+// --- S c r i p t D a t a ---
+
+
+ScriptData* ScriptData::PreCompile(const char* input, int length) {
+  i::Utf8ToUtf16CharacterStream stream(
+      reinterpret_cast<const unsigned char*>(input), length);
+  return i::PreParserApi::PreParse(&stream);
+}
+
+
+ScriptData* ScriptData::PreCompile(v8::Handle<String> source) {
+  i::Handle<i::String> str = Utils::OpenHandle(*source);
+  if (str->IsExternalTwoByteString()) {
+    i::ExternalTwoByteStringUtf16CharacterStream stream(
+      i::Handle<i::ExternalTwoByteString>::cast(str), 0, str->length());
+    return i::PreParserApi::PreParse(&stream);
+  } else {
+    i::GenericStringUtf16CharacterStream stream(str, 0, str->length());
+    return i::PreParserApi::PreParse(&stream);
+  }
+}
+
+
+ScriptData* ScriptData::New(const char* data, int length) {
+  // Return an empty ScriptData if the length is obviously invalid.
+  if (length % sizeof(unsigned) != 0) {
+    return new i::ScriptDataImpl();
+  }
+
+  // Copy the data to ensure it is properly aligned.
+  int deserialized_data_length = length / sizeof(unsigned);
+  // If aligned, don't create a copy of the data.
+  if (reinterpret_cast<intptr_t>(data) % sizeof(unsigned) == 0) {
+    return new i::ScriptDataImpl(data, length);
+  }
+  // Copy the data to align it.
+  unsigned* deserialized_data = i::NewArray<unsigned>(deserialized_data_length);
+  i::CopyBytes(reinterpret_cast<char*>(deserialized_data),
+               data, static_cast<size_t>(length));
+
+  return new i::ScriptDataImpl(
+      i::Vector<unsigned>(deserialized_data, deserialized_data_length));
+}
+
+
+// --- S c r i p t ---
+
+
+Local<Script> Script::New(v8::Handle<String> source,
+                          v8::ScriptOrigin* origin,
+                          v8::ScriptData* pre_data,
+                          v8::Handle<String> script_data) {
+  i::Isolate* isolate = i::Isolate::Current();
+  ON_BAILOUT(isolate, "v8::Script::New()", return Local<Script>());
+  LOG_API(isolate, "Script::New");
+  ENTER_V8(isolate);
+  i::SharedFunctionInfo* raw_result = NULL;
+  { i::HandleScope scope(isolate);
+    i::Handle<i::String> str = Utils::OpenHandle(*source);
+    i::Handle<i::Object> name_obj;
+    int line_offset = 0;
+    int column_offset = 0;
+    bool is_shared_cross_origin = false;
+    if (origin != NULL) {
+      if (!origin->ResourceName().IsEmpty()) {
+        name_obj = Utils::OpenHandle(*origin->ResourceName());
+      }
+      if (!origin->ResourceLineOffset().IsEmpty()) {
+        line_offset = static_cast<int>(origin->ResourceLineOffset()->Value());
+      }
+      if (!origin->ResourceColumnOffset().IsEmpty()) {
+        column_offset =
+            static_cast<int>(origin->ResourceColumnOffset()->Value());
+      }
+      if (!origin->ResourceIsSharedCrossOrigin().IsEmpty()) {
+        is_shared_cross_origin =
+            origin->ResourceIsSharedCrossOrigin() == v8::True();
+      }
+    }
+    EXCEPTION_PREAMBLE(isolate);
+    i::ScriptDataImpl* pre_data_impl =
+        static_cast<i::ScriptDataImpl*>(pre_data);
+    // We assert that the pre-data is sane, even though we can actually
+    // handle it if it turns out not to be in release mode.
+    ASSERT(pre_data_impl == NULL || pre_data_impl->SanityCheck());
+    // If the pre-data isn't sane we simply ignore it
+    if (pre_data_impl != NULL && !pre_data_impl->SanityCheck()) {
+      pre_data_impl = NULL;
+    }
+    i::Handle<i::SharedFunctionInfo> result =
+      i::Compiler::Compile(str,
+                           name_obj,
+                           line_offset,
+                           column_offset,
+                           is_shared_cross_origin,
+                           isolate->global_context(),
+                           NULL,
+                           pre_data_impl,
+                           Utils::OpenHandle(*script_data, true),
+                           i::NOT_NATIVES_CODE);
+    has_pending_exception = result.is_null();
+    EXCEPTION_BAILOUT_CHECK(isolate, Local<Script>());
+    raw_result = *result;
+  }
+  i::Handle<i::SharedFunctionInfo> result(raw_result, isolate);
+  return ToApiHandle<Script>(result);
+}
+
+
+Local<Script> Script::New(v8::Handle<String> source,
+                          v8::Handle<Value> file_name) {
+  ScriptOrigin origin(file_name);
+  return New(source, &origin);
+}
+
+
+Local<Script> Script::Compile(v8::Handle<String> source,
+                              v8::ScriptOrigin* origin,
+                              v8::ScriptData* pre_data,
+                              v8::Handle<String> script_data) {
+  i::Isolate* isolate = i::Isolate::Current();
+  ON_BAILOUT(isolate, "v8::Script::Compile()", return Local<Script>());
+  LOG_API(isolate, "Script::Compile");
+  ENTER_V8(isolate);
+  Local<Script> generic = New(source, origin, pre_data, script_data);
+  if (generic.IsEmpty())
+    return generic;
+  i::Handle<i::Object> obj = Utils::OpenHandle(*generic);
+  i::Handle<i::SharedFunctionInfo> function =
+      i::Handle<i::SharedFunctionInfo>(i::SharedFunctionInfo::cast(*obj));
+  i::Handle<i::JSFunction> result =
+      isolate->factory()->NewFunctionFromSharedFunctionInfo(
+          function,
+          isolate->global_context());
+  return ToApiHandle<Script>(result);
+}
+
+
+Local<Script> Script::Compile(v8::Handle<String> source,
+                              v8::Handle<Value> file_name,
+                              v8::Handle<String> script_data) {
+  ScriptOrigin origin(file_name);
+  return Compile(source, &origin, 0, script_data);
+}
+
+
+Local<Value> Script::Run() {
+  i::Isolate* isolate = i::Isolate::Current();
+  ON_BAILOUT(isolate, "v8::Script::Run()", return Local<Value>());
+  LOG_API(isolate, "Script::Run");
+  ENTER_V8(isolate);
+  i::Logger::TimerEventScope timer_scope(
+      isolate, i::Logger::TimerEventScope::v8_execute);
+  i::Object* raw_result = NULL;
+  {
+    i::HandleScope scope(isolate);
+    i::Handle<i::Object> obj = Utils::OpenHandle(this);
+    i::Handle<i::JSFunction> fun;
+    if (obj->IsSharedFunctionInfo()) {
+      i::Handle<i::SharedFunctionInfo>
+          function_info(i::SharedFunctionInfo::cast(*obj), isolate);
+      fun = isolate->factory()->NewFunctionFromSharedFunctionInfo(
+          function_info, isolate->global_context());
+    } else {
+      fun = i::Handle<i::JSFunction>(i::JSFunction::cast(*obj), isolate);
+    }
+    EXCEPTION_PREAMBLE(isolate);
+    i::Handle<i::Object> receiver(
+        isolate->context()->global_proxy(), isolate);
+    i::Handle<i::Object> result =
+        i::Execution::Call(fun, receiver, 0, NULL, &has_pending_exception);
+    EXCEPTION_BAILOUT_CHECK_DO_CALLBACK(isolate, Local<Value>());
+    raw_result = *result;
+  }
+  i::Handle<i::Object> result(raw_result, isolate);
+  return Utils::ToLocal(result);
+}
+
+
+static i::Handle<i::SharedFunctionInfo> OpenScript(Script* script) {
+  i::Handle<i::Object> obj = Utils::OpenHandle(script);
+  i::Handle<i::SharedFunctionInfo> result;
+  if (obj->IsSharedFunctionInfo()) {
+    result =
+        i::Handle<i::SharedFunctionInfo>(i::SharedFunctionInfo::cast(*obj));
+  } else {
+    result =
+        i::Handle<i::SharedFunctionInfo>(i::JSFunction::cast(*obj)->shared());
+  }
+  return result;
+}
+
+
+Local<Value> Script::Id() {
+  i::Isolate* isolate = i::Isolate::Current();
+  ON_BAILOUT(isolate, "v8::Script::Id()", return Local<Value>());
+  LOG_API(isolate, "Script::Id");
+  i::Object* raw_id = NULL;
+  {
+    i::HandleScope scope(isolate);
+    i::Handle<i::SharedFunctionInfo> function_info = OpenScript(this);
+    i::Handle<i::Script> script(i::Script::cast(function_info->script()));
+    i::Handle<i::Object> id(script->id(), isolate);
+    raw_id = *id;
+  }
+  i::Handle<i::Object> id(raw_id, isolate);
+  return Utils::ToLocal(id);
+}
+
+
+int Script::GetId() {
+  i::Isolate* isolate = i::Isolate::Current();
+  ON_BAILOUT(isolate, "v8::Script::Id()", return -1);
+  LOG_API(isolate, "Script::Id");
+  {
+    i::HandleScope scope(isolate);
+    i::Handle<i::SharedFunctionInfo> function_info = OpenScript(this);
+    i::Handle<i::Script> script(i::Script::cast(function_info->script()));
+    return script->id()->value();
+  }
+}
+
+
+int Script::GetLineNumber(int code_pos) {
+  i::Isolate* isolate = i::Isolate::Current();
+  ON_BAILOUT(isolate, "v8::Script::GetLineNumber()", return -1);
+  LOG_API(isolate, "Script::GetLineNumber");
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  if (obj->IsScript()) {
+    i::Handle<i::Script> script = i::Handle<i::Script>(i::Script::cast(*obj));
+    return i::GetScriptLineNumber(script, code_pos);
+  } else {
+    return -1;
+  }
+}
+
+
+Handle<Value> Script::GetScriptName() {
+  i::Isolate* isolate = i::Isolate::Current();
+  ON_BAILOUT(isolate, "v8::Script::GetName()", return Handle<String>());
+  LOG_API(isolate, "Script::GetName");
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  if (obj->IsScript()) {
+    i::Object* name = i::Script::cast(*obj)->name();
+    return Utils::ToLocal(i::Handle<i::Object>(name, isolate));
+  } else {
+    return Handle<String>();
+  }
+}
+
+
+void Script::SetData(v8::Handle<String> data) {
+  i::Isolate* isolate = i::Isolate::Current();
+  ON_BAILOUT(isolate, "v8::Script::SetData()", return);
+  LOG_API(isolate, "Script::SetData");
+  {
+    i::HandleScope scope(isolate);
+    i::Handle<i::SharedFunctionInfo> function_info = OpenScript(this);
+    i::Handle<i::Object> raw_data = Utils::OpenHandle(*data);
+    i::Handle<i::Script> script(i::Script::cast(function_info->script()));
+    script->set_data(*raw_data);
+  }
+}
+
+
+// --- E x c e p t i o n s ---
+
+
+v8::TryCatch::TryCatch()
+    : isolate_(i::Isolate::Current()),
+      next_(isolate_->try_catch_handler_address()),
+      is_verbose_(false),
+      can_continue_(true),
+      capture_message_(true),
+      rethrow_(false),
+      has_terminated_(false) {
+  Reset();
+  isolate_->RegisterTryCatchHandler(this);
+}
+
+
+v8::TryCatch::~TryCatch() {
+  ASSERT(isolate_ == i::Isolate::Current());
+  if (rethrow_) {
+    v8::HandleScope scope(reinterpret_cast<Isolate*>(isolate_));
+    v8::Local<v8::Value> exc = v8::Local<v8::Value>::New(Exception());
+    if (HasCaught() && capture_message_) {
+      // If an exception was caught and rethrow_ is indicated, the saved
+      // message, script, and location need to be restored to Isolate TLS
+      // for reuse.  capture_message_ needs to be disabled so that DoThrow()
+      // does not create a new message.
+      isolate_->thread_local_top()->rethrowing_message_ = true;
+      isolate_->RestorePendingMessageFromTryCatch(this);
+    }
+    isolate_->UnregisterTryCatchHandler(this);
+    v8::ThrowException(exc);
+    ASSERT(!isolate_->thread_local_top()->rethrowing_message_);
+  } else {
+    isolate_->UnregisterTryCatchHandler(this);
+  }
+}
+
+
+bool v8::TryCatch::HasCaught() const {
+  return !reinterpret_cast<i::Object*>(exception_)->IsTheHole();
+}
+
+
+bool v8::TryCatch::CanContinue() const {
+  return can_continue_;
+}
+
+
+bool v8::TryCatch::HasTerminated() const {
+  return has_terminated_;
+}
+
+
+v8::Handle<v8::Value> v8::TryCatch::ReThrow() {
+  if (!HasCaught()) return v8::Local<v8::Value>();
+  rethrow_ = true;
+  return v8::Undefined();
+}
+
+
+v8::Local<Value> v8::TryCatch::Exception() const {
+  ASSERT(isolate_ == i::Isolate::Current());
+  if (HasCaught()) {
+    // Check for out of memory exception.
+    i::Object* exception = reinterpret_cast<i::Object*>(exception_);
+    return v8::Utils::ToLocal(i::Handle<i::Object>(exception, isolate_));
+  } else {
+    return v8::Local<Value>();
+  }
+}
+
+
+v8::Local<Value> v8::TryCatch::StackTrace() const {
+  ASSERT(isolate_ == i::Isolate::Current());
+  if (HasCaught()) {
+    i::Object* raw_obj = reinterpret_cast<i::Object*>(exception_);
+    if (!raw_obj->IsJSObject()) return v8::Local<Value>();
+    i::HandleScope scope(isolate_);
+    i::Handle<i::JSObject> obj(i::JSObject::cast(raw_obj), isolate_);
+    i::Handle<i::String> name = isolate_->factory()->stack_string();
+    if (!obj->HasProperty(*name)) return v8::Local<Value>();
+    i::Handle<i::Object> value = i::GetProperty(isolate_, obj, name);
+    if (value.is_null()) return v8::Local<Value>();
+    return v8::Utils::ToLocal(scope.CloseAndEscape(value));
+  } else {
+    return v8::Local<Value>();
+  }
+}
+
+
+v8::Local<v8::Message> v8::TryCatch::Message() const {
+  ASSERT(isolate_ == i::Isolate::Current());
+  i::Object* message = reinterpret_cast<i::Object*>(message_obj_);
+  ASSERT(message->IsJSMessageObject() || message->IsTheHole());
+  if (HasCaught() && !message->IsTheHole()) {
+    return v8::Utils::MessageToLocal(i::Handle<i::Object>(message, isolate_));
+  } else {
+    return v8::Local<v8::Message>();
+  }
+}
+
+
+void v8::TryCatch::Reset() {
+  ASSERT(isolate_ == i::Isolate::Current());
+  i::Object* the_hole = isolate_->heap()->the_hole_value();
+  exception_ = the_hole;
+  message_obj_ = the_hole;
+  message_script_ = the_hole;
+  message_start_pos_ = 0;
+  message_end_pos_ = 0;
+}
+
+
+void v8::TryCatch::SetVerbose(bool value) {
+  is_verbose_ = value;
+}
+
+
+void v8::TryCatch::SetCaptureMessage(bool value) {
+  capture_message_ = value;
+}
+
+
+// --- M e s s a g e ---
+
+
+Local<String> Message::Get() const {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Message::Get()", return Local<String>());
+  ENTER_V8(isolate);
+  HandleScope scope(reinterpret_cast<Isolate*>(isolate));
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  i::Handle<i::String> raw_result = i::MessageHandler::GetMessage(isolate, obj);
+  Local<String> result = Utils::ToLocal(raw_result);
+  return scope.Close(result);
+}
+
+
+v8::Handle<Value> Message::GetScriptResourceName() const {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::Message::GetScriptResourceName()")) {
+    return Local<String>();
+  }
+  ENTER_V8(isolate);
+  HandleScope scope(reinterpret_cast<Isolate*>(isolate));
+  i::Handle<i::JSMessageObject> message =
+      i::Handle<i::JSMessageObject>::cast(Utils::OpenHandle(this));
+  // Return this.script.name.
+  i::Handle<i::JSValue> script =
+      i::Handle<i::JSValue>::cast(i::Handle<i::Object>(message->script(),
+                                                       isolate));
+  i::Handle<i::Object> resource_name(i::Script::cast(script->value())->name(),
+                                     isolate);
+  return scope.Close(Utils::ToLocal(resource_name));
+}
+
+
+v8::Handle<Value> Message::GetScriptData() const {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::Message::GetScriptResourceData()")) {
+    return Local<Value>();
+  }
+  ENTER_V8(isolate);
+  HandleScope scope(reinterpret_cast<Isolate*>(isolate));
+  i::Handle<i::JSMessageObject> message =
+      i::Handle<i::JSMessageObject>::cast(Utils::OpenHandle(this));
+  // Return this.script.data.
+  i::Handle<i::JSValue> script =
+      i::Handle<i::JSValue>::cast(i::Handle<i::Object>(message->script(),
+                                                       isolate));
+  i::Handle<i::Object> data(i::Script::cast(script->value())->data(), isolate);
+  return scope.Close(Utils::ToLocal(data));
+}
+
+
+v8::Handle<v8::StackTrace> Message::GetStackTrace() const {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::Message::GetStackTrace()")) {
+    return Local<v8::StackTrace>();
+  }
+  ENTER_V8(isolate);
+  HandleScope scope(reinterpret_cast<Isolate*>(isolate));
+  i::Handle<i::JSMessageObject> message =
+      i::Handle<i::JSMessageObject>::cast(Utils::OpenHandle(this));
+  i::Handle<i::Object> stackFramesObj(message->stack_frames(), isolate);
+  if (!stackFramesObj->IsJSArray()) return v8::Handle<v8::StackTrace>();
+  i::Handle<i::JSArray> stackTrace =
+      i::Handle<i::JSArray>::cast(stackFramesObj);
+  return scope.Close(Utils::StackTraceToLocal(stackTrace));
+}
+
+
+static i::Handle<i::Object> CallV8HeapFunction(const char* name,
+                                               i::Handle<i::Object> recv,
+                                               int argc,
+                                               i::Handle<i::Object> argv[],
+                                               bool* has_pending_exception) {
+  i::Isolate* isolate = i::Isolate::Current();
+  i::Handle<i::String> fmt_str =
+      isolate->factory()->InternalizeUtf8String(name);
+  i::Object* object_fun =
+      isolate->js_builtins_object()->GetPropertyNoExceptionThrown(*fmt_str);
+  i::Handle<i::JSFunction> fun =
+      i::Handle<i::JSFunction>(i::JSFunction::cast(object_fun));
+  i::Handle<i::Object> value =
+      i::Execution::Call(fun, recv, argc, argv, has_pending_exception);
+  return value;
+}
+
+
+static i::Handle<i::Object> CallV8HeapFunction(const char* name,
+                                               i::Handle<i::Object> data,
+                                               bool* has_pending_exception) {
+  i::Handle<i::Object> argv[] = { data };
+  return CallV8HeapFunction(name,
+                            i::Isolate::Current()->js_builtins_object(),
+                            ARRAY_SIZE(argv),
+                            argv,
+                            has_pending_exception);
+}
+
+
+int Message::GetLineNumber() const {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Message::GetLineNumber()", return kNoLineNumberInfo);
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+
+  EXCEPTION_PREAMBLE(isolate);
+  i::Handle<i::Object> result = CallV8HeapFunction("GetLineNumber",
+                                                   Utils::OpenHandle(this),
+                                                   &has_pending_exception);
+  EXCEPTION_BAILOUT_CHECK(isolate, 0);
+  return static_cast<int>(result->Number());
+}
+
+
+int Message::GetStartPosition() const {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::Message::GetStartPosition()")) return 0;
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::JSMessageObject> message =
+      i::Handle<i::JSMessageObject>::cast(Utils::OpenHandle(this));
+  return message->start_position();
+}
+
+
+int Message::GetEndPosition() const {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::Message::GetEndPosition()")) return 0;
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::JSMessageObject> message =
+      i::Handle<i::JSMessageObject>::cast(Utils::OpenHandle(this));
+  return message->end_position();
+}
+
+
+int Message::GetStartColumn() const {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::Message::GetStartColumn()")) {
+    return kNoColumnInfo;
+  }
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::JSObject> data_obj = Utils::OpenHandle(this);
+  EXCEPTION_PREAMBLE(isolate);
+  i::Handle<i::Object> start_col_obj = CallV8HeapFunction(
+      "GetPositionInLine",
+      data_obj,
+      &has_pending_exception);
+  EXCEPTION_BAILOUT_CHECK(isolate, 0);
+  return static_cast<int>(start_col_obj->Number());
+}
+
+
+int Message::GetEndColumn() const {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::Message::GetEndColumn()")) return kNoColumnInfo;
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::JSObject> data_obj = Utils::OpenHandle(this);
+  EXCEPTION_PREAMBLE(isolate);
+  i::Handle<i::Object> start_col_obj = CallV8HeapFunction(
+      "GetPositionInLine",
+      data_obj,
+      &has_pending_exception);
+  EXCEPTION_BAILOUT_CHECK(isolate, 0);
+  i::Handle<i::JSMessageObject> message =
+      i::Handle<i::JSMessageObject>::cast(data_obj);
+  int start = message->start_position();
+  int end = message->end_position();
+  return static_cast<int>(start_col_obj->Number()) + (end - start);
+}
+
+
+bool Message::IsSharedCrossOrigin() const {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::Message::IsSharedCrossOrigin()")) return 0;
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::JSMessageObject> message =
+      i::Handle<i::JSMessageObject>::cast(Utils::OpenHandle(this));
+  i::Handle<i::JSValue> script =
+      i::Handle<i::JSValue>::cast(i::Handle<i::Object>(message->script(),
+                                                       isolate));
+  return i::Script::cast(script->value())->is_shared_cross_origin();
+}
+
+
+Local<String> Message::GetSourceLine() const {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Message::GetSourceLine()", return Local<String>());
+  ENTER_V8(isolate);
+  HandleScope scope(reinterpret_cast<Isolate*>(isolate));
+  EXCEPTION_PREAMBLE(isolate);
+  i::Handle<i::Object> result = CallV8HeapFunction("GetSourceLine",
+                                                   Utils::OpenHandle(this),
+                                                   &has_pending_exception);
+  EXCEPTION_BAILOUT_CHECK(isolate, Local<v8::String>());
+  if (result->IsString()) {
+    return scope.Close(Utils::ToLocal(i::Handle<i::String>::cast(result)));
+  } else {
+    return Local<String>();
+  }
+}
+
+
+void Message::PrintCurrentStackTrace(FILE* out) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::Message::PrintCurrentStackTrace()")) return;
+  ENTER_V8(isolate);
+  isolate->PrintCurrentStackTrace(out);
+}
+
+
+// --- S t a c k T r a c e ---
+
+Local<StackFrame> StackTrace::GetFrame(uint32_t index) const {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::StackTrace::GetFrame()")) {
+    return Local<StackFrame>();
+  }
+  ENTER_V8(isolate);
+  HandleScope scope(reinterpret_cast<Isolate*>(isolate));
+  i::Handle<i::JSArray> self = Utils::OpenHandle(this);
+  i::Object* raw_object = self->GetElementNoExceptionThrown(index);
+  i::Handle<i::JSObject> obj(i::JSObject::cast(raw_object));
+  return scope.Close(Utils::StackFrameToLocal(obj));
+}
+
+
+int StackTrace::GetFrameCount() const {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::StackTrace::GetFrameCount()")) return -1;
+  ENTER_V8(isolate);
+  return i::Smi::cast(Utils::OpenHandle(this)->length())->value();
+}
+
+
+Local<Array> StackTrace::AsArray() {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::StackTrace::AsArray()")) Local<Array>();
+  ENTER_V8(isolate);
+  return Utils::ToLocal(Utils::OpenHandle(this));
+}
+
+
+Local<StackTrace> StackTrace::CurrentStackTrace(int frame_limit,
+    StackTraceOptions options) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::StackTrace::CurrentStackTrace()")) {
+    Local<StackTrace>();
+  }
+  ENTER_V8(isolate);
+  i::Handle<i::JSArray> stackTrace =
+      isolate->CaptureCurrentStackTrace(frame_limit, options);
+  return Utils::StackTraceToLocal(stackTrace);
+}
+
+
+// --- S t a c k F r a m e ---
+
+int StackFrame::GetLineNumber() const {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::StackFrame::GetLineNumber()")) {
+    return Message::kNoLineNumberInfo;
+  }
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  i::Handle<i::Object> line = GetProperty(self, "lineNumber");
+  if (!line->IsSmi()) {
+    return Message::kNoLineNumberInfo;
+  }
+  return i::Smi::cast(*line)->value();
+}
+
+
+int StackFrame::GetColumn() const {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::StackFrame::GetColumn()")) {
+    return Message::kNoColumnInfo;
+  }
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  i::Handle<i::Object> column = GetProperty(self, "column");
+  if (!column->IsSmi()) {
+    return Message::kNoColumnInfo;
+  }
+  return i::Smi::cast(*column)->value();
+}
+
+
+Local<String> StackFrame::GetScriptName() const {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::StackFrame::GetScriptName()")) {
+    return Local<String>();
+  }
+  ENTER_V8(isolate);
+  HandleScope scope(reinterpret_cast<Isolate*>(isolate));
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  i::Handle<i::Object> name = GetProperty(self, "scriptName");
+  if (!name->IsString()) {
+    return Local<String>();
+  }
+  return scope.Close(Local<String>::Cast(Utils::ToLocal(name)));
+}
+
+
+Local<String> StackFrame::GetScriptNameOrSourceURL() const {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::StackFrame::GetScriptNameOrSourceURL()")) {
+    return Local<String>();
+  }
+  ENTER_V8(isolate);
+  HandleScope scope(reinterpret_cast<Isolate*>(isolate));
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  i::Handle<i::Object> name = GetProperty(self, "scriptNameOrSourceURL");
+  if (!name->IsString()) {
+    return Local<String>();
+  }
+  return scope.Close(Local<String>::Cast(Utils::ToLocal(name)));
+}
+
+
+Local<String> StackFrame::GetFunctionName() const {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::StackFrame::GetFunctionName()")) {
+    return Local<String>();
+  }
+  ENTER_V8(isolate);
+  HandleScope scope(reinterpret_cast<Isolate*>(isolate));
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  i::Handle<i::Object> name = GetProperty(self, "functionName");
+  if (!name->IsString()) {
+    return Local<String>();
+  }
+  return scope.Close(Local<String>::Cast(Utils::ToLocal(name)));
+}
+
+
+bool StackFrame::IsEval() const {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::StackFrame::IsEval()")) return false;
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  i::Handle<i::Object> is_eval = GetProperty(self, "isEval");
+  return is_eval->IsTrue();
+}
+
+
+bool StackFrame::IsConstructor() const {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::StackFrame::IsConstructor()")) return false;
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  i::Handle<i::Object> is_constructor = GetProperty(self, "isConstructor");
+  return is_constructor->IsTrue();
+}
+
+
+// --- J S O N ---
+
+Local<Value> JSON::Parse(Local<String> json_string) {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate, "v8::JSON::Parse");
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::String> source = i::Handle<i::String>(
+      FlattenGetString(Utils::OpenHandle(*json_string)));
+  EXCEPTION_PREAMBLE(isolate);
+  i::Handle<i::Object> result;
+  if (source->IsSeqOneByteString()) {
+    result = i::JsonParser<true>::Parse(source);
+  } else {
+    result = i::JsonParser<false>::Parse(source);
+  }
+  has_pending_exception = result.is_null();
+  EXCEPTION_BAILOUT_CHECK(isolate, Local<Object>());
+  return Utils::ToLocal(
+      i::Handle<i::Object>::cast(scope.CloseAndEscape(result)));
+}
+
+
+// --- D a t a ---
+
+bool Value::FullIsUndefined() const {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Value::IsUndefined()")) {
+    return false;
+  }
+  bool result = Utils::OpenHandle(this)->IsUndefined();
+  ASSERT_EQ(result, QuickIsUndefined());
+  return result;
+}
+
+
+bool Value::FullIsNull() const {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Value::IsNull()")) return false;
+  bool result = Utils::OpenHandle(this)->IsNull();
+  ASSERT_EQ(result, QuickIsNull());
+  return result;
+}
+
+
+bool Value::IsTrue() const {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Value::IsTrue()")) return false;
+  return Utils::OpenHandle(this)->IsTrue();
+}
+
+
+bool Value::IsFalse() const {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Value::IsFalse()")) return false;
+  return Utils::OpenHandle(this)->IsFalse();
+}
+
+
+bool Value::IsFunction() const {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Value::IsFunction()")) {
+    return false;
+  }
+  return Utils::OpenHandle(this)->IsJSFunction();
+}
+
+
+bool Value::FullIsString() const {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Value::IsString()")) return false;
+  bool result = Utils::OpenHandle(this)->IsString();
+  ASSERT_EQ(result, QuickIsString());
+  return result;
+}
+
+
+bool Value::IsSymbol() const {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Value::IsSymbol()")) return false;
+  return Utils::OpenHandle(this)->IsSymbol();
+}
+
+
+bool Value::IsArray() const {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Value::IsArray()")) return false;
+  return Utils::OpenHandle(this)->IsJSArray();
+}
+
+
+bool Value::IsArrayBuffer() const {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Value::IsArrayBuffer()"))
+    return false;
+  return Utils::OpenHandle(this)->IsJSArrayBuffer();
+}
+
+
+bool Value::IsArrayBufferView() const {
+  return Utils::OpenHandle(this)->IsJSArrayBufferView();
+}
+
+
+bool Value::IsTypedArray() const {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Value::IsArrayBuffer()"))
+    return false;
+  return Utils::OpenHandle(this)->IsJSTypedArray();
+}
+
+
+#define TYPED_ARRAY_LIST(F) \
+F(Uint8Array, kExternalUnsignedByteArray) \
+F(Int8Array, kExternalByteArray) \
+F(Uint16Array, kExternalUnsignedShortArray) \
+F(Int16Array, kExternalShortArray) \
+F(Uint32Array, kExternalUnsignedIntArray) \
+F(Int32Array, kExternalIntArray) \
+F(Float32Array, kExternalFloatArray) \
+F(Float64Array, kExternalDoubleArray) \
+F(Uint8ClampedArray, kExternalPixelArray)
+
+
+#define VALUE_IS_TYPED_ARRAY(TypedArray, type_const)                          \
+  bool Value::Is##TypedArray() const {                                        \
+    if (IsDeadCheck(i::Isolate::Current(), "v8::Value::Is" #TypedArray "()")) \
+      return false;                                                           \
+    i::Handle<i::Object> obj = Utils::OpenHandle(this);                       \
+    if (!obj->IsJSTypedArray()) return false;                                 \
+    return i::JSTypedArray::cast(*obj)->type() == type_const;                 \
+  }
+
+TYPED_ARRAY_LIST(VALUE_IS_TYPED_ARRAY)
+
+#undef VALUE_IS_TYPED_ARRAY
+
+
+bool Value::IsDataView() const {
+  return Utils::OpenHandle(this)->IsJSDataView();
+}
+
+
+bool Value::IsObject() const {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Value::IsObject()")) return false;
+  return Utils::OpenHandle(this)->IsJSObject();
+}
+
+
+bool Value::IsNumber() const {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Value::IsNumber()")) return false;
+  return Utils::OpenHandle(this)->IsNumber();
+}
+
+
+bool Value::IsBoolean() const {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Value::IsBoolean()")) {
+    return false;
+  }
+  return Utils::OpenHandle(this)->IsBoolean();
+}
+
+
+bool Value::IsExternal() const {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Value::IsExternal()")) {
+    return false;
+  }
+  return Utils::OpenHandle(this)->IsExternal();
+}
+
+
+bool Value::IsInt32() const {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Value::IsInt32()")) return false;
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  if (obj->IsSmi()) return true;
+  if (obj->IsNumber()) {
+    double value = obj->Number();
+    static const i::DoubleRepresentation minus_zero(-0.0);
+    i::DoubleRepresentation rep(value);
+    if (rep.bits == minus_zero.bits) {
+      return false;
+    }
+    return i::FastI2D(i::FastD2I(value)) == value;
+  }
+  return false;
+}
+
+
+bool Value::IsUint32() const {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Value::IsUint32()")) return false;
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  if (obj->IsSmi()) return i::Smi::cast(*obj)->value() >= 0;
+  if (obj->IsNumber()) {
+    double value = obj->Number();
+    static const i::DoubleRepresentation minus_zero(-0.0);
+    i::DoubleRepresentation rep(value);
+    if (rep.bits == minus_zero.bits) {
+      return false;
+    }
+    return i::FastUI2D(i::FastD2UI(value)) == value;
+  }
+  return false;
+}
+
+
+bool Value::IsDate() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::Value::IsDate()")) return false;
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  return obj->HasSpecificClassOf(isolate->heap()->Date_string());
+}
+
+
+bool Value::IsStringObject() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::Value::IsStringObject()")) return false;
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  return obj->HasSpecificClassOf(isolate->heap()->String_string());
+}
+
+
+bool Value::IsSymbolObject() const {
+  // TODO(svenpanne): these and other test functions should be written such
+  // that they do not use Isolate::Current().
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::Value::IsSymbolObject()")) return false;
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  return obj->HasSpecificClassOf(isolate->heap()->Symbol_string());
+}
+
+
+bool Value::IsNumberObject() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::Value::IsNumberObject()")) return false;
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  return obj->HasSpecificClassOf(isolate->heap()->Number_string());
+}
+
+
+static i::Object* LookupBuiltin(i::Isolate* isolate,
+                                const char* builtin_name) {
+  i::Handle<i::String> string =
+      isolate->factory()->InternalizeUtf8String(builtin_name);
+  i::Handle<i::JSBuiltinsObject> builtins = isolate->js_builtins_object();
+  return builtins->GetPropertyNoExceptionThrown(*string);
+}
+
+
+static bool CheckConstructor(i::Isolate* isolate,
+                             i::Handle<i::JSObject> obj,
+                             const char* class_name) {
+  i::Object* constr = obj->map()->constructor();
+  if (!constr->IsJSFunction()) return false;
+  i::JSFunction* func = i::JSFunction::cast(constr);
+  return func->shared()->native() &&
+         constr == LookupBuiltin(isolate, class_name);
+}
+
+
+bool Value::IsNativeError() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::Value::IsNativeError()")) return false;
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  if (obj->IsJSObject()) {
+    i::Handle<i::JSObject> js_obj(i::JSObject::cast(*obj));
+    return CheckConstructor(isolate, js_obj, "$Error") ||
+        CheckConstructor(isolate, js_obj, "$EvalError") ||
+        CheckConstructor(isolate, js_obj, "$RangeError") ||
+        CheckConstructor(isolate, js_obj, "$ReferenceError") ||
+        CheckConstructor(isolate, js_obj, "$SyntaxError") ||
+        CheckConstructor(isolate, js_obj, "$TypeError") ||
+        CheckConstructor(isolate, js_obj, "$URIError");
+  } else {
+    return false;
+  }
+}
+
+
+bool Value::IsBooleanObject() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::Value::IsBooleanObject()")) return false;
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  return obj->HasSpecificClassOf(isolate->heap()->Boolean_string());
+}
+
+
+bool Value::IsRegExp() const {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Value::IsRegExp()")) return false;
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  return obj->IsJSRegExp();
+}
+
+
+Local<String> Value::ToString() const {
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  i::Handle<i::Object> str;
+  if (obj->IsString()) {
+    str = obj;
+  } else {
+    i::Isolate* isolate = i::Isolate::Current();
+    if (IsDeadCheck(isolate, "v8::Value::ToString()")) {
+      return Local<String>();
+    }
+    LOG_API(isolate, "ToString");
+    ENTER_V8(isolate);
+    EXCEPTION_PREAMBLE(isolate);
+    str = i::Execution::ToString(obj, &has_pending_exception);
+    EXCEPTION_BAILOUT_CHECK(isolate, Local<String>());
+  }
+  return ToApiHandle<String>(str);
+}
+
+
+Local<String> Value::ToDetailString() const {
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  i::Handle<i::Object> str;
+  if (obj->IsString()) {
+    str = obj;
+  } else {
+    i::Isolate* isolate = i::Isolate::Current();
+    if (IsDeadCheck(isolate, "v8::Value::ToDetailString()")) {
+      return Local<String>();
+    }
+    LOG_API(isolate, "ToDetailString");
+    ENTER_V8(isolate);
+    EXCEPTION_PREAMBLE(isolate);
+    str = i::Execution::ToDetailString(obj, &has_pending_exception);
+    EXCEPTION_BAILOUT_CHECK(isolate, Local<String>());
+  }
+  return ToApiHandle<String>(str);
+}
+
+
+Local<v8::Object> Value::ToObject() const {
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  i::Handle<i::Object> val;
+  if (obj->IsJSObject()) {
+    val = obj;
+  } else {
+    i::Isolate* isolate = i::Isolate::Current();
+    if (IsDeadCheck(isolate, "v8::Value::ToObject()")) {
+      return Local<v8::Object>();
+    }
+    LOG_API(isolate, "ToObject");
+    ENTER_V8(isolate);
+    EXCEPTION_PREAMBLE(isolate);
+    val = i::Execution::ToObject(obj, &has_pending_exception);
+    EXCEPTION_BAILOUT_CHECK(isolate, Local<v8::Object>());
+  }
+  return ToApiHandle<Object>(val);
+}
+
+
+Local<Boolean> Value::ToBoolean() const {
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  if (obj->IsBoolean()) {
+    return ToApiHandle<Boolean>(obj);
+  } else {
+    i::Isolate* isolate = i::Isolate::Current();
+    if (IsDeadCheck(isolate, "v8::Value::ToBoolean()")) {
+      return Local<Boolean>();
+    }
+    LOG_API(isolate, "ToBoolean");
+    ENTER_V8(isolate);
+    i::Handle<i::Object> val =
+        isolate->factory()->ToBoolean(obj->BooleanValue());
+    return ToApiHandle<Boolean>(val);
+  }
+}
+
+
+Local<Number> Value::ToNumber() const {
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  i::Handle<i::Object> num;
+  if (obj->IsNumber()) {
+    num = obj;
+  } else {
+    i::Isolate* isolate = i::Isolate::Current();
+    if (IsDeadCheck(isolate, "v8::Value::ToNumber()")) {
+      return Local<Number>();
+    }
+    LOG_API(isolate, "ToNumber");
+    ENTER_V8(isolate);
+    EXCEPTION_PREAMBLE(isolate);
+    num = i::Execution::ToNumber(obj, &has_pending_exception);
+    EXCEPTION_BAILOUT_CHECK(isolate, Local<Number>());
+  }
+  return ToApiHandle<Number>(num);
+}
+
+
+Local<Integer> Value::ToInteger() const {
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  i::Handle<i::Object> num;
+  if (obj->IsSmi()) {
+    num = obj;
+  } else {
+    i::Isolate* isolate = i::Isolate::Current();
+    if (IsDeadCheck(isolate, "v8::Value::ToInteger()")) return Local<Integer>();
+    LOG_API(isolate, "ToInteger");
+    ENTER_V8(isolate);
+    EXCEPTION_PREAMBLE(isolate);
+    num = i::Execution::ToInteger(obj, &has_pending_exception);
+    EXCEPTION_BAILOUT_CHECK(isolate, Local<Integer>());
+  }
+  return ToApiHandle<Integer>(num);
+}
+
+
+void i::Internals::CheckInitializedImpl(v8::Isolate* external_isolate) {
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(external_isolate);
+  ApiCheck(isolate != NULL && isolate->IsInitialized() && !i::V8::IsDead(),
+           "v8::internal::Internals::CheckInitialized()",
+           "Isolate is not initialized or V8 has died");
+}
+
+
+void External::CheckCast(v8::Value* that) {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::External::Cast()")) return;
+  ApiCheck(Utils::OpenHandle(that)->IsExternal(),
+           "v8::External::Cast()",
+           "Could not convert to external");
+}
+
+
+void v8::Object::CheckCast(Value* that) {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Object::Cast()")) return;
+  i::Handle<i::Object> obj = Utils::OpenHandle(that);
+  ApiCheck(obj->IsJSObject(),
+           "v8::Object::Cast()",
+           "Could not convert to object");
+}
+
+
+void v8::Function::CheckCast(Value* that) {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Function::Cast()")) return;
+  i::Handle<i::Object> obj = Utils::OpenHandle(that);
+  ApiCheck(obj->IsJSFunction(),
+           "v8::Function::Cast()",
+           "Could not convert to function");
+}
+
+
+void v8::String::CheckCast(v8::Value* that) {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::String::Cast()")) return;
+  i::Handle<i::Object> obj = Utils::OpenHandle(that);
+  ApiCheck(obj->IsString(),
+           "v8::String::Cast()",
+           "Could not convert to string");
+}
+
+
+void v8::Symbol::CheckCast(v8::Value* that) {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Symbol::Cast()")) return;
+  i::Handle<i::Object> obj = Utils::OpenHandle(that);
+  ApiCheck(obj->IsSymbol(),
+           "v8::Symbol::Cast()",
+           "Could not convert to symbol");
+}
+
+
+void v8::Number::CheckCast(v8::Value* that) {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Number::Cast()")) return;
+  i::Handle<i::Object> obj = Utils::OpenHandle(that);
+  ApiCheck(obj->IsNumber(),
+           "v8::Number::Cast()",
+           "Could not convert to number");
+}
+
+
+void v8::Integer::CheckCast(v8::Value* that) {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Integer::Cast()")) return;
+  i::Handle<i::Object> obj = Utils::OpenHandle(that);
+  ApiCheck(obj->IsNumber(),
+           "v8::Integer::Cast()",
+           "Could not convert to number");
+}
+
+
+void v8::Array::CheckCast(Value* that) {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Array::Cast()")) return;
+  i::Handle<i::Object> obj = Utils::OpenHandle(that);
+  ApiCheck(obj->IsJSArray(),
+           "v8::Array::Cast()",
+           "Could not convert to array");
+}
+
+
+void v8::ArrayBuffer::CheckCast(Value* that) {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::ArrayBuffer::Cast()")) return;
+  i::Handle<i::Object> obj = Utils::OpenHandle(that);
+  ApiCheck(obj->IsJSArrayBuffer(),
+           "v8::ArrayBuffer::Cast()",
+           "Could not convert to ArrayBuffer");
+}
+
+
+void v8::ArrayBuffer::Allocator::Free(void* data) {
+  API_Fatal("v8::ArrayBuffer::Allocator::Free",
+            "Override Allocator::Free(void*, size_t)");
+}
+
+
+void v8::ArrayBufferView::CheckCast(Value* that) {
+  i::Handle<i::Object> obj = Utils::OpenHandle(that);
+  ApiCheck(obj->IsJSArrayBufferView(),
+           "v8::ArrayBufferView::Cast()",
+           "Could not convert to ArrayBufferView");
+}
+
+
+void v8::TypedArray::CheckCast(Value* that) {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::TypedArray::Cast()")) return;
+  i::Handle<i::Object> obj = Utils::OpenHandle(that);
+  ApiCheck(obj->IsJSTypedArray(),
+           "v8::TypedArray::Cast()",
+           "Could not convert to TypedArray");
+}
+
+
+#define CHECK_TYPED_ARRAY_CAST(ApiClass, typeConst)                         \
+  void v8::ApiClass::CheckCast(Value* that) {                               \
+    if (IsDeadCheck(i::Isolate::Current(), "v8::" #ApiClass "::Cast()"))    \
+      return;                                                               \
+    i::Handle<i::Object> obj = Utils::OpenHandle(that);                     \
+    ApiCheck(obj->IsJSTypedArray() &&                                       \
+             i::JSTypedArray::cast(*obj)->type() == typeConst,              \
+             "v8::" #ApiClass "::Cast()",                                   \
+             "Could not convert to " #ApiClass);                            \
+  }
+
+
+TYPED_ARRAY_LIST(CHECK_TYPED_ARRAY_CAST)
+
+#undef CHECK_TYPED_ARRAY_CAST
+
+
+void v8::DataView::CheckCast(Value* that) {
+  i::Handle<i::Object> obj = Utils::OpenHandle(that);
+  ApiCheck(obj->IsJSDataView(),
+           "v8::DataView::Cast()",
+           "Could not convert to DataView");
+}
+
+
+void v8::Date::CheckCast(v8::Value* that) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::Date::Cast()")) return;
+  i::Handle<i::Object> obj = Utils::OpenHandle(that);
+  ApiCheck(obj->HasSpecificClassOf(isolate->heap()->Date_string()),
+           "v8::Date::Cast()",
+           "Could not convert to date");
+}
+
+
+void v8::StringObject::CheckCast(v8::Value* that) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::StringObject::Cast()")) return;
+  i::Handle<i::Object> obj = Utils::OpenHandle(that);
+  ApiCheck(obj->HasSpecificClassOf(isolate->heap()->String_string()),
+           "v8::StringObject::Cast()",
+           "Could not convert to StringObject");
+}
+
+
+void v8::SymbolObject::CheckCast(v8::Value* that) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::SymbolObject::Cast()")) return;
+  i::Handle<i::Object> obj = Utils::OpenHandle(that);
+  ApiCheck(obj->HasSpecificClassOf(isolate->heap()->Symbol_string()),
+           "v8::SymbolObject::Cast()",
+           "Could not convert to SymbolObject");
+}
+
+
+void v8::NumberObject::CheckCast(v8::Value* that) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::NumberObject::Cast()")) return;
+  i::Handle<i::Object> obj = Utils::OpenHandle(that);
+  ApiCheck(obj->HasSpecificClassOf(isolate->heap()->Number_string()),
+           "v8::NumberObject::Cast()",
+           "Could not convert to NumberObject");
+}
+
+
+void v8::BooleanObject::CheckCast(v8::Value* that) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::BooleanObject::Cast()")) return;
+  i::Handle<i::Object> obj = Utils::OpenHandle(that);
+  ApiCheck(obj->HasSpecificClassOf(isolate->heap()->Boolean_string()),
+           "v8::BooleanObject::Cast()",
+           "Could not convert to BooleanObject");
+}
+
+
+void v8::RegExp::CheckCast(v8::Value* that) {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::RegExp::Cast()")) return;
+  i::Handle<i::Object> obj = Utils::OpenHandle(that);
+  ApiCheck(obj->IsJSRegExp(),
+           "v8::RegExp::Cast()",
+           "Could not convert to regular expression");
+}
+
+
+bool Value::BooleanValue() const {
+  return Utils::OpenHandle(this)->BooleanValue();
+}
+
+
+double Value::NumberValue() const {
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  i::Handle<i::Object> num;
+  if (obj->IsNumber()) {
+    num = obj;
+  } else {
+    i::Isolate* isolate = i::Isolate::Current();
+    if (IsDeadCheck(isolate, "v8::Value::NumberValue()")) {
+      return i::OS::nan_value();
+    }
+    LOG_API(isolate, "NumberValue");
+    ENTER_V8(isolate);
+    EXCEPTION_PREAMBLE(isolate);
+    num = i::Execution::ToNumber(obj, &has_pending_exception);
+    EXCEPTION_BAILOUT_CHECK(isolate, i::OS::nan_value());
+  }
+  return num->Number();
+}
+
+
+int64_t Value::IntegerValue() const {
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  i::Handle<i::Object> num;
+  if (obj->IsNumber()) {
+    num = obj;
+  } else {
+    i::Isolate* isolate = i::Isolate::Current();
+    if (IsDeadCheck(isolate, "v8::Value::IntegerValue()")) return 0;
+    LOG_API(isolate, "IntegerValue");
+    ENTER_V8(isolate);
+    EXCEPTION_PREAMBLE(isolate);
+    num = i::Execution::ToInteger(obj, &has_pending_exception);
+    EXCEPTION_BAILOUT_CHECK(isolate, 0);
+  }
+  if (num->IsSmi()) {
+    return i::Smi::cast(*num)->value();
+  } else {
+    return static_cast<int64_t>(num->Number());
+  }
+}
+
+
+Local<Int32> Value::ToInt32() const {
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  i::Handle<i::Object> num;
+  if (obj->IsSmi()) {
+    num = obj;
+  } else {
+    i::Isolate* isolate = i::Isolate::Current();
+    if (IsDeadCheck(isolate, "v8::Value::ToInt32()")) return Local<Int32>();
+    LOG_API(isolate, "ToInt32");
+    ENTER_V8(isolate);
+    EXCEPTION_PREAMBLE(isolate);
+    num = i::Execution::ToInt32(obj, &has_pending_exception);
+    EXCEPTION_BAILOUT_CHECK(isolate, Local<Int32>());
+  }
+  return ToApiHandle<Int32>(num);
+}
+
+
+Local<Uint32> Value::ToUint32() const {
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  i::Handle<i::Object> num;
+  if (obj->IsSmi()) {
+    num = obj;
+  } else {
+    i::Isolate* isolate = i::Isolate::Current();
+    if (IsDeadCheck(isolate, "v8::Value::ToUint32()")) return Local<Uint32>();
+    LOG_API(isolate, "ToUInt32");
+    ENTER_V8(isolate);
+    EXCEPTION_PREAMBLE(isolate);
+    num = i::Execution::ToUint32(obj, &has_pending_exception);
+    EXCEPTION_BAILOUT_CHECK(isolate, Local<Uint32>());
+  }
+  return ToApiHandle<Uint32>(num);
+}
+
+
+Local<Uint32> Value::ToArrayIndex() const {
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  if (obj->IsSmi()) {
+    if (i::Smi::cast(*obj)->value() >= 0) return Utils::Uint32ToLocal(obj);
+    return Local<Uint32>();
+  }
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::Value::ToArrayIndex()")) return Local<Uint32>();
+  LOG_API(isolate, "ToArrayIndex");
+  ENTER_V8(isolate);
+  EXCEPTION_PREAMBLE(isolate);
+  i::Handle<i::Object> string_obj =
+      i::Execution::ToString(obj, &has_pending_exception);
+  EXCEPTION_BAILOUT_CHECK(isolate, Local<Uint32>());
+  i::Handle<i::String> str = i::Handle<i::String>::cast(string_obj);
+  uint32_t index;
+  if (str->AsArrayIndex(&index)) {
+    i::Handle<i::Object> value;
+    if (index <= static_cast<uint32_t>(i::Smi::kMaxValue)) {
+      value = i::Handle<i::Object>(i::Smi::FromInt(index), isolate);
+    } else {
+      value = isolate->factory()->NewNumber(index);
+    }
+    return Utils::Uint32ToLocal(value);
+  }
+  return Local<Uint32>();
+}
+
+
+int32_t Value::Int32Value() const {
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  if (obj->IsSmi()) {
+    return i::Smi::cast(*obj)->value();
+  } else {
+    i::Isolate* isolate = i::Isolate::Current();
+    if (IsDeadCheck(isolate, "v8::Value::Int32Value()")) return 0;
+    LOG_API(isolate, "Int32Value (slow)");
+    ENTER_V8(isolate);
+    EXCEPTION_PREAMBLE(isolate);
+    i::Handle<i::Object> num =
+        i::Execution::ToInt32(obj, &has_pending_exception);
+    EXCEPTION_BAILOUT_CHECK(isolate, 0);
+    if (num->IsSmi()) {
+      return i::Smi::cast(*num)->value();
+    } else {
+      return static_cast<int32_t>(num->Number());
+    }
+  }
+}
+
+
+bool Value::Equals(Handle<Value> that) const {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::Value::Equals()")
+      || EmptyCheck("v8::Value::Equals()", this)
+      || EmptyCheck("v8::Value::Equals()", that)) {
+    return false;
+  }
+  LOG_API(isolate, "Equals");
+  ENTER_V8(isolate);
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  i::Handle<i::Object> other = Utils::OpenHandle(*that);
+  // If both obj and other are JSObjects, we'd better compare by identity
+  // immediately when going into JS builtin.  The reason is Invoke
+  // would overwrite global object receiver with global proxy.
+  if (obj->IsJSObject() && other->IsJSObject()) {
+    return *obj == *other;
+  }
+  i::Handle<i::Object> args[] = { other };
+  EXCEPTION_PREAMBLE(isolate);
+  i::Handle<i::Object> result =
+      CallV8HeapFunction("EQUALS", obj, ARRAY_SIZE(args), args,
+                         &has_pending_exception);
+  EXCEPTION_BAILOUT_CHECK(isolate, false);
+  return *result == i::Smi::FromInt(i::EQUAL);
+}
+
+
+bool Value::StrictEquals(Handle<Value> that) const {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::Value::StrictEquals()")
+      || EmptyCheck("v8::Value::StrictEquals()", this)
+      || EmptyCheck("v8::Value::StrictEquals()", that)) {
+    return false;
+  }
+  LOG_API(isolate, "StrictEquals");
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  i::Handle<i::Object> other = Utils::OpenHandle(*that);
+  // Must check HeapNumber first, since NaN !== NaN.
+  if (obj->IsHeapNumber()) {
+    if (!other->IsNumber()) return false;
+    double x = obj->Number();
+    double y = other->Number();
+    // Must check explicitly for NaN:s on Windows, but -0 works fine.
+    return x == y && !std::isnan(x) && !std::isnan(y);
+  } else if (*obj == *other) {  // Also covers Booleans.
+    return true;
+  } else if (obj->IsSmi()) {
+    return other->IsNumber() && obj->Number() == other->Number();
+  } else if (obj->IsString()) {
+    return other->IsString() &&
+      i::String::cast(*obj)->Equals(i::String::cast(*other));
+  } else if (obj->IsUndefined() || obj->IsUndetectableObject()) {
+    return other->IsUndefined() || other->IsUndetectableObject();
+  } else {
+    return false;
+  }
+}
+
+
+uint32_t Value::Uint32Value() const {
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  if (obj->IsSmi()) {
+    return i::Smi::cast(*obj)->value();
+  } else {
+    i::Isolate* isolate = i::Isolate::Current();
+    if (IsDeadCheck(isolate, "v8::Value::Uint32Value()")) return 0;
+    LOG_API(isolate, "Uint32Value");
+    ENTER_V8(isolate);
+    EXCEPTION_PREAMBLE(isolate);
+    i::Handle<i::Object> num =
+        i::Execution::ToUint32(obj, &has_pending_exception);
+    EXCEPTION_BAILOUT_CHECK(isolate, 0);
+    if (num->IsSmi()) {
+      return i::Smi::cast(*num)->value();
+    } else {
+      return static_cast<uint32_t>(num->Number());
+    }
+  }
+}
+
+
+bool v8::Object::Set(v8::Handle<Value> key, v8::Handle<Value> value,
+                     v8::PropertyAttribute attribs) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::Set()", return false);
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::Object> self = Utils::OpenHandle(this);
+  i::Handle<i::Object> key_obj = Utils::OpenHandle(*key);
+  i::Handle<i::Object> value_obj = Utils::OpenHandle(*value);
+  EXCEPTION_PREAMBLE(isolate);
+  i::Handle<i::Object> obj = i::SetProperty(
+      isolate,
+      self,
+      key_obj,
+      value_obj,
+      static_cast<PropertyAttributes>(attribs),
+      i::kNonStrictMode);
+  has_pending_exception = obj.is_null();
+  EXCEPTION_BAILOUT_CHECK(isolate, false);
+  return true;
+}
+
+
+bool v8::Object::Set(uint32_t index, v8::Handle<Value> value) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::Set()", return false);
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  i::Handle<i::Object> value_obj = Utils::OpenHandle(*value);
+  EXCEPTION_PREAMBLE(isolate);
+  i::Handle<i::Object> obj = i::JSObject::SetElement(
+      self,
+      index,
+      value_obj,
+      NONE,
+      i::kNonStrictMode);
+  has_pending_exception = obj.is_null();
+  EXCEPTION_BAILOUT_CHECK(isolate, false);
+  return true;
+}
+
+
+bool v8::Object::ForceSet(v8::Handle<Value> key,
+                          v8::Handle<Value> value,
+                          v8::PropertyAttribute attribs) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::ForceSet()", return false);
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  i::Handle<i::Object> key_obj = Utils::OpenHandle(*key);
+  i::Handle<i::Object> value_obj = Utils::OpenHandle(*value);
+  EXCEPTION_PREAMBLE(isolate);
+  i::Handle<i::Object> obj = i::ForceSetProperty(
+      self,
+      key_obj,
+      value_obj,
+      static_cast<PropertyAttributes>(attribs));
+  has_pending_exception = obj.is_null();
+  EXCEPTION_BAILOUT_CHECK(isolate, false);
+  return true;
+}
+
+
+bool v8::Object::ForceDelete(v8::Handle<Value> key) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::ForceDelete()", return false);
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  i::Handle<i::Object> key_obj = Utils::OpenHandle(*key);
+
+  // When deleting a property on the global object using ForceDelete
+  // deoptimize all functions as optimized code does not check for the hole
+  // value with DontDelete properties.  We have to deoptimize all contexts
+  // because of possible cross-context inlined functions.
+  if (self->IsJSGlobalProxy() || self->IsGlobalObject()) {
+    i::Deoptimizer::DeoptimizeAll(isolate);
+  }
+
+  EXCEPTION_PREAMBLE(isolate);
+  i::Handle<i::Object> obj = i::ForceDeleteProperty(self, key_obj);
+  has_pending_exception = obj.is_null();
+  EXCEPTION_BAILOUT_CHECK(isolate, false);
+  return obj->IsTrue();
+}
+
+
+Local<Value> v8::Object::Get(v8::Handle<Value> key) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::Get()", return Local<v8::Value>());
+  ENTER_V8(isolate);
+  i::Handle<i::Object> self = Utils::OpenHandle(this);
+  i::Handle<i::Object> key_obj = Utils::OpenHandle(*key);
+  EXCEPTION_PREAMBLE(isolate);
+  i::Handle<i::Object> result = i::GetProperty(isolate, self, key_obj);
+  has_pending_exception = result.is_null();
+  EXCEPTION_BAILOUT_CHECK(isolate, Local<Value>());
+  return Utils::ToLocal(result);
+}
+
+
+Local<Value> v8::Object::Get(uint32_t index) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::Get()", return Local<v8::Value>());
+  ENTER_V8(isolate);
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  EXCEPTION_PREAMBLE(isolate);
+  i::Handle<i::Object> result = i::Object::GetElement(self, index);
+  has_pending_exception = result.is_null();
+  EXCEPTION_BAILOUT_CHECK(isolate, Local<Value>());
+  return Utils::ToLocal(result);
+}
+
+
+PropertyAttribute v8::Object::GetPropertyAttributes(v8::Handle<Value> key) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::GetPropertyAttribute()",
+             return static_cast<PropertyAttribute>(NONE));
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  i::Handle<i::Object> key_obj = Utils::OpenHandle(*key);
+  if (!key_obj->IsName()) {
+    EXCEPTION_PREAMBLE(isolate);
+    key_obj = i::Execution::ToString(key_obj, &has_pending_exception);
+    EXCEPTION_BAILOUT_CHECK(isolate, static_cast<PropertyAttribute>(NONE));
+  }
+  i::Handle<i::Name> key_name = i::Handle<i::Name>::cast(key_obj);
+  PropertyAttributes result = self->GetPropertyAttribute(*key_name);
+  if (result == ABSENT) return static_cast<PropertyAttribute>(NONE);
+  return static_cast<PropertyAttribute>(result);
+}
+
+
+Local<Value> v8::Object::GetPrototype() {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::GetPrototype()",
+             return Local<v8::Value>());
+  ENTER_V8(isolate);
+  i::Handle<i::Object> self = Utils::OpenHandle(this);
+  i::Handle<i::Object> result(self->GetPrototype(isolate), isolate);
+  return Utils::ToLocal(result);
+}
+
+
+bool v8::Object::SetPrototype(Handle<Value> value) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::SetPrototype()", return false);
+  ENTER_V8(isolate);
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  i::Handle<i::Object> value_obj = Utils::OpenHandle(*value);
+  // We do not allow exceptions thrown while setting the prototype
+  // to propagate outside.
+  TryCatch try_catch;
+  EXCEPTION_PREAMBLE(isolate);
+  i::Handle<i::Object> result = i::JSObject::SetPrototype(self, value_obj);
+  has_pending_exception = result.is_null();
+  EXCEPTION_BAILOUT_CHECK(isolate, false);
+  return true;
+}
+
+
+Local<Object> v8::Object::FindInstanceInPrototypeChain(
+    v8::Handle<FunctionTemplate> tmpl) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate,
+             "v8::Object::FindInstanceInPrototypeChain()",
+             return Local<v8::Object>());
+  ENTER_V8(isolate);
+  i::JSObject* object = *Utils::OpenHandle(this);
+  i::FunctionTemplateInfo* tmpl_info = *Utils::OpenHandle(*tmpl);
+  while (!object->IsInstanceOf(tmpl_info)) {
+    i::Object* prototype = object->GetPrototype();
+    if (!prototype->IsJSObject()) return Local<Object>();
+    object = i::JSObject::cast(prototype);
+  }
+  return Utils::ToLocal(i::Handle<i::JSObject>(object));
+}
+
+
+Local<Array> v8::Object::GetPropertyNames() {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::GetPropertyNames()",
+             return Local<v8::Array>());
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  bool threw = false;
+  i::Handle<i::FixedArray> value =
+      i::GetKeysInFixedArrayFor(self, i::INCLUDE_PROTOS, &threw);
+  if (threw) return Local<v8::Array>();
+  // Because we use caching to speed up enumeration it is important
+  // to never change the result of the basic enumeration function so
+  // we clone the result.
+  i::Handle<i::FixedArray> elms = isolate->factory()->CopyFixedArray(value);
+  i::Handle<i::JSArray> result =
+      isolate->factory()->NewJSArrayWithElements(elms);
+  return Utils::ToLocal(scope.CloseAndEscape(result));
+}
+
+
+Local<Array> v8::Object::GetOwnPropertyNames() {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::GetOwnPropertyNames()",
+             return Local<v8::Array>());
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  bool threw = false;
+  i::Handle<i::FixedArray> value =
+      i::GetKeysInFixedArrayFor(self, i::LOCAL_ONLY, &threw);
+  if (threw) return Local<v8::Array>();
+  // Because we use caching to speed up enumeration it is important
+  // to never change the result of the basic enumeration function so
+  // we clone the result.
+  i::Handle<i::FixedArray> elms = isolate->factory()->CopyFixedArray(value);
+  i::Handle<i::JSArray> result =
+      isolate->factory()->NewJSArrayWithElements(elms);
+  return Utils::ToLocal(scope.CloseAndEscape(result));
+}
+
+
+Local<String> v8::Object::ObjectProtoToString() {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::ObjectProtoToString()",
+             return Local<v8::String>());
+  ENTER_V8(isolate);
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+
+  i::Handle<i::Object> name(self->class_name(), isolate);
+
+  // Native implementation of Object.prototype.toString (v8natives.js):
+  //   var c = %_ClassOf(this);
+  //   if (c === 'Arguments') c  = 'Object';
+  //   return "[object " + c + "]";
+
+  if (!name->IsString()) {
+    return v8::String::New("[object ]");
+
+  } else {
+    i::Handle<i::String> class_name = i::Handle<i::String>::cast(name);
+    if (class_name->IsOneByteEqualTo(STATIC_ASCII_VECTOR("Arguments"))) {
+      return v8::String::New("[object Object]");
+
+    } else {
+      const char* prefix = "[object ";
+      Local<String> str = Utils::ToLocal(class_name);
+      const char* postfix = "]";
+
+      int prefix_len = i::StrLength(prefix);
+      int str_len = str->Utf8Length();
+      int postfix_len = i::StrLength(postfix);
+
+      int buf_len = prefix_len + str_len + postfix_len;
+      i::ScopedVector<char> buf(buf_len);
+
+      // Write prefix.
+      char* ptr = buf.start();
+      i::OS::MemCopy(ptr, prefix, prefix_len * v8::internal::kCharSize);
+      ptr += prefix_len;
+
+      // Write real content.
+      str->WriteUtf8(ptr, str_len);
+      ptr += str_len;
+
+      // Write postfix.
+      i::OS::MemCopy(ptr, postfix, postfix_len * v8::internal::kCharSize);
+
+      // Copy the buffer into a heap-allocated string and return it.
+      Local<String> result = v8::String::New(buf.start(), buf_len);
+      return result;
+    }
+  }
+}
+
+
+Local<Value> v8::Object::GetConstructor() {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::GetConstructor()",
+             return Local<v8::Function>());
+  ENTER_V8(isolate);
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  i::Handle<i::Object> constructor(self->GetConstructor(), isolate);
+  return Utils::ToLocal(constructor);
+}
+
+
+Local<String> v8::Object::GetConstructorName() {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::GetConstructorName()",
+             return Local<v8::String>());
+  ENTER_V8(isolate);
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  i::Handle<i::String> name(self->constructor_name());
+  return Utils::ToLocal(name);
+}
+
+
+bool v8::Object::Delete(v8::Handle<Value> key) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::Delete()", return false);
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  i::Handle<i::Object> key_obj = Utils::OpenHandle(*key);
+  EXCEPTION_PREAMBLE(isolate);
+  i::Handle<i::Object> obj = i::DeleteProperty(self, key_obj);
+  has_pending_exception = obj.is_null();
+  EXCEPTION_BAILOUT_CHECK(isolate, false);
+  return obj->IsTrue();
+}
+
+
+bool v8::Object::Has(v8::Handle<Value> key) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::Has()", return false);
+  ENTER_V8(isolate);
+  i::Handle<i::JSReceiver> self = Utils::OpenHandle(this);
+  i::Handle<i::Object> key_obj = Utils::OpenHandle(*key);
+  EXCEPTION_PREAMBLE(isolate);
+  i::Handle<i::Object> obj = i::HasProperty(self, key_obj);
+  has_pending_exception = obj.is_null();
+  EXCEPTION_BAILOUT_CHECK(isolate, false);
+  return obj->IsTrue();
+}
+
+
+bool v8::Object::Delete(uint32_t index) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::DeleteProperty()",
+             return false);
+  ENTER_V8(isolate);
+  HandleScope scope(reinterpret_cast<Isolate*>(isolate));
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  return i::JSObject::DeleteElement(self, index)->IsTrue();
+}
+
+
+bool v8::Object::Has(uint32_t index) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::HasProperty()", return false);
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  return self->HasElement(index);
+}
+
+
+template<typename Setter, typename Getter, typename Data>
+static inline bool ObjectSetAccessor(Object* obj,
+                                     Handle<String> name,
+                                     Setter getter,
+                                     Getter setter,
+                                     Data data,
+                                     AccessControl settings,
+                                     PropertyAttribute attributes) {
+  i::Isolate* isolate = Utils::OpenHandle(obj)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::SetAccessor()", return false);
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  v8::Handle<AccessorSignature> signature;
+  i::Handle<i::AccessorInfo> info = MakeAccessorInfo(
+      name, getter, setter, data, settings, attributes, signature);
+  if (info.is_null()) return false;
+  bool fast = Utils::OpenHandle(obj)->HasFastProperties();
+  i::Handle<i::Object> result = i::SetAccessor(Utils::OpenHandle(obj), info);
+  if (result.is_null() || result->IsUndefined()) return false;
+  if (fast) i::JSObject::TransformToFastProperties(Utils::OpenHandle(obj), 0);
+  return true;
+}
+
+
+bool Object::SetAccessor(Handle<String> name,
+                         AccessorGetter getter,
+                         AccessorSetter setter,
+                         v8::Handle<Value> data,
+                         AccessControl settings,
+                         PropertyAttribute attributes) {
+  return ObjectSetAccessor(
+      this, name, getter, setter, data, settings, attributes);
+}
+
+
+bool Object::SetAccessor(Handle<String> name,
+                         AccessorGetterCallback getter,
+                         AccessorSetterCallback setter,
+                         v8::Handle<Value> data,
+                         AccessControl settings,
+                         PropertyAttribute attributes) {
+  return ObjectSetAccessor(
+      this, name, getter, setter, data, settings, attributes);
+}
+
+
+bool Object::SetAccessor(Handle<String> name,
+                         Handle<DeclaredAccessorDescriptor> descriptor,
+                         AccessControl settings,
+                         PropertyAttribute attributes) {
+  void* null = NULL;
+  return ObjectSetAccessor(
+      this, name, descriptor, null, null, settings, attributes);
+}
+
+
+bool v8::Object::HasOwnProperty(Handle<String> key) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::HasOwnProperty()",
+             return false);
+  return Utils::OpenHandle(this)->HasLocalProperty(
+      *Utils::OpenHandle(*key));
+}
+
+
+bool v8::Object::HasRealNamedProperty(Handle<String> key) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::HasRealNamedProperty()",
+             return false);
+  return Utils::OpenHandle(this)->HasRealNamedProperty(
+      isolate,
+      *Utils::OpenHandle(*key));
+}
+
+
+bool v8::Object::HasRealIndexedProperty(uint32_t index) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::HasRealIndexedProperty()",
+             return false);
+  return Utils::OpenHandle(this)->HasRealElementProperty(isolate, index);
+}
+
+
+bool v8::Object::HasRealNamedCallbackProperty(Handle<String> key) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate,
+             "v8::Object::HasRealNamedCallbackProperty()",
+             return false);
+  ENTER_V8(isolate);
+  return Utils::OpenHandle(this)->HasRealNamedCallbackProperty(
+      isolate,
+      *Utils::OpenHandle(*key));
+}
+
+
+bool v8::Object::HasNamedLookupInterceptor() {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::HasNamedLookupInterceptor()",
+             return false);
+  return Utils::OpenHandle(this)->HasNamedInterceptor();
+}
+
+
+bool v8::Object::HasIndexedLookupInterceptor() {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::HasIndexedLookupInterceptor()",
+             return false);
+  return Utils::OpenHandle(this)->HasIndexedInterceptor();
+}
+
+
+static Local<Value> GetPropertyByLookup(i::Isolate* isolate,
+                                        i::Handle<i::JSObject> receiver,
+                                        i::Handle<i::String> name,
+                                        i::LookupResult* lookup) {
+  if (!lookup->IsProperty()) {
+    // No real property was found.
+    return Local<Value>();
+  }
+
+  // If the property being looked up is a callback, it can throw
+  // an exception.
+  EXCEPTION_PREAMBLE(isolate);
+  PropertyAttributes ignored;
+  i::Handle<i::Object> result =
+      i::Object::GetProperty(receiver, receiver, lookup, name,
+                             &ignored);
+  has_pending_exception = result.is_null();
+  EXCEPTION_BAILOUT_CHECK(isolate, Local<Value>());
+
+  return Utils::ToLocal(result);
+}
+
+
+Local<Value> v8::Object::GetRealNamedPropertyInPrototypeChain(
+      Handle<String> key) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate,
+             "v8::Object::GetRealNamedPropertyInPrototypeChain()",
+             return Local<Value>());
+  ENTER_V8(isolate);
+  i::Handle<i::JSObject> self_obj = Utils::OpenHandle(this);
+  i::Handle<i::String> key_obj = Utils::OpenHandle(*key);
+  i::LookupResult lookup(isolate);
+  self_obj->LookupRealNamedPropertyInPrototypes(*key_obj, &lookup);
+  return GetPropertyByLookup(isolate, self_obj, key_obj, &lookup);
+}
+
+
+Local<Value> v8::Object::GetRealNamedProperty(Handle<String> key) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::GetRealNamedProperty()",
+             return Local<Value>());
+  ENTER_V8(isolate);
+  i::Handle<i::JSObject> self_obj = Utils::OpenHandle(this);
+  i::Handle<i::String> key_obj = Utils::OpenHandle(*key);
+  i::LookupResult lookup(isolate);
+  self_obj->LookupRealNamedProperty(*key_obj, &lookup);
+  return GetPropertyByLookup(isolate, self_obj, key_obj, &lookup);
+}
+
+
+// Turns on access checks by copying the map and setting the check flag.
+// Because the object gets a new map, existing inline cache caching
+// the old map of this object will fail.
+void v8::Object::TurnOnAccessCheck() {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::TurnOnAccessCheck()", return);
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::JSObject> obj = Utils::OpenHandle(this);
+
+  // When turning on access checks for a global object deoptimize all functions
+  // as optimized code does not always handle access checks.
+  i::Deoptimizer::DeoptimizeGlobalObject(*obj);
+
+  i::Handle<i::Map> new_map =
+      isolate->factory()->CopyMap(i::Handle<i::Map>(obj->map()));
+  new_map->set_is_access_check_needed(true);
+  obj->set_map(*new_map);
+}
+
+
+bool v8::Object::IsDirty() {
+  return Utils::OpenHandle(this)->IsDirty();
+}
+
+
+Local<v8::Object> v8::Object::Clone() {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::Clone()", return Local<Object>());
+  ENTER_V8(isolate);
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  EXCEPTION_PREAMBLE(isolate);
+  i::Handle<i::JSObject> result = i::Copy(self);
+  has_pending_exception = result.is_null();
+  EXCEPTION_BAILOUT_CHECK(isolate, Local<Object>());
+  return Utils::ToLocal(result);
+}
+
+
+static i::Context* GetCreationContext(i::JSObject* object) {
+  i::Object* constructor = object->map()->constructor();
+  i::JSFunction* function;
+  if (!constructor->IsJSFunction()) {
+    // Functions have null as a constructor,
+    // but any JSFunction knows its context immediately.
+    ASSERT(object->IsJSFunction());
+    function = i::JSFunction::cast(object);
+  } else {
+    function = i::JSFunction::cast(constructor);
+  }
+  return function->context()->native_context();
+}
+
+
+Local<v8::Context> v8::Object::CreationContext() {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate,
+             "v8::Object::CreationContext()", return Local<v8::Context>());
+  ENTER_V8(isolate);
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  i::Context* context = GetCreationContext(*self);
+  return Utils::ToLocal(i::Handle<i::Context>(context));
+}
+
+
+int v8::Object::GetIdentityHash() {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::GetIdentityHash()", return 0);
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  return i::JSObject::GetIdentityHash(self);
+}
+
+
+bool v8::Object::SetHiddenValue(v8::Handle<v8::String> key,
+                                v8::Handle<v8::Value> value) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::SetHiddenValue()", return false);
+  if (value.IsEmpty()) return DeleteHiddenValue(key);
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  i::Handle<i::String> key_obj = Utils::OpenHandle(*key);
+  i::Handle<i::String> key_string =
+      isolate->factory()->InternalizeString(key_obj);
+  i::Handle<i::Object> value_obj = Utils::OpenHandle(*value);
+  i::Handle<i::Object> result =
+      i::JSObject::SetHiddenProperty(self, key_string, value_obj);
+  return *result == *self;
+}
+
+
+v8::Local<v8::Value> v8::Object::GetHiddenValue(v8::Handle<v8::String> key) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::GetHiddenValue()",
+             return Local<v8::Value>());
+  ENTER_V8(isolate);
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  i::Handle<i::String> key_obj = Utils::OpenHandle(*key);
+  i::Handle<i::String> key_string =
+      isolate->factory()->InternalizeString(key_obj);
+  i::Handle<i::Object> result(self->GetHiddenProperty(*key_string), isolate);
+  if (result->IsTheHole()) return v8::Local<v8::Value>();
+  return Utils::ToLocal(result);
+}
+
+
+bool v8::Object::DeleteHiddenValue(v8::Handle<v8::String> key) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::DeleteHiddenValue()", return false);
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  i::Handle<i::String> key_obj = Utils::OpenHandle(*key);
+  i::Handle<i::String> key_string =
+      isolate->factory()->InternalizeString(key_obj);
+  self->DeleteHiddenProperty(*key_string);
+  return true;
+}
+
+
+namespace {
+
+static i::ElementsKind GetElementsKindFromExternalArrayType(
+    ExternalArrayType array_type) {
+  switch (array_type) {
+    case kExternalByteArray:
+      return i::EXTERNAL_BYTE_ELEMENTS;
+      break;
+    case kExternalUnsignedByteArray:
+      return i::EXTERNAL_UNSIGNED_BYTE_ELEMENTS;
+      break;
+    case kExternalShortArray:
+      return i::EXTERNAL_SHORT_ELEMENTS;
+      break;
+    case kExternalUnsignedShortArray:
+      return i::EXTERNAL_UNSIGNED_SHORT_ELEMENTS;
+      break;
+    case kExternalIntArray:
+      return i::EXTERNAL_INT_ELEMENTS;
+      break;
+    case kExternalUnsignedIntArray:
+      return i::EXTERNAL_UNSIGNED_INT_ELEMENTS;
+      break;
+    case kExternalFloatArray:
+      return i::EXTERNAL_FLOAT_ELEMENTS;
+      break;
+    case kExternalDoubleArray:
+      return i::EXTERNAL_DOUBLE_ELEMENTS;
+      break;
+    case kExternalPixelArray:
+      return i::EXTERNAL_PIXEL_ELEMENTS;
+      break;
+  }
+  UNREACHABLE();
+  return i::DICTIONARY_ELEMENTS;
+}
+
+
+void PrepareExternalArrayElements(i::Handle<i::JSObject> object,
+                                  void* data,
+                                  ExternalArrayType array_type,
+                                  int length) {
+  i::Isolate* isolate = object->GetIsolate();
+  i::Handle<i::ExternalArray> array =
+      isolate->factory()->NewExternalArray(length, array_type, data);
+
+  i::Handle<i::Map> external_array_map =
+      isolate->factory()->GetElementsTransitionMap(
+          object,
+          GetElementsKindFromExternalArrayType(array_type));
+
+  object->set_map(*external_array_map);
+  object->set_elements(*array);
+}
+
+}  // namespace
+
+
+void v8::Object::SetIndexedPropertiesToPixelData(uint8_t* data, int length) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::SetElementsToPixelData()", return);
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  if (!ApiCheck(length >= 0 && length <= i::ExternalPixelArray::kMaxLength,
+                "v8::Object::SetIndexedPropertiesToPixelData()",
+                "length exceeds max acceptable value")) {
+    return;
+  }
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  if (!ApiCheck(!self->IsJSArray(),
+                "v8::Object::SetIndexedPropertiesToPixelData()",
+                "JSArray is not supported")) {
+    return;
+  }
+  PrepareExternalArrayElements(self, data, kExternalPixelArray, length);
+}
+
+
+bool v8::Object::HasIndexedPropertiesInPixelData() {
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  ON_BAILOUT(self->GetIsolate(), "v8::HasIndexedPropertiesInPixelData()",
+             return false);
+  return self->HasExternalPixelElements();
+}
+
+
+uint8_t* v8::Object::GetIndexedPropertiesPixelData() {
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  ON_BAILOUT(self->GetIsolate(), "v8::GetIndexedPropertiesPixelData()",
+             return NULL);
+  if (self->HasExternalPixelElements()) {
+    return i::ExternalPixelArray::cast(self->elements())->
+        external_pixel_pointer();
+  } else {
+    return NULL;
+  }
+}
+
+
+int v8::Object::GetIndexedPropertiesPixelDataLength() {
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  ON_BAILOUT(self->GetIsolate(), "v8::GetIndexedPropertiesPixelDataLength()",
+             return -1);
+  if (self->HasExternalPixelElements()) {
+    return i::ExternalPixelArray::cast(self->elements())->length();
+  } else {
+    return -1;
+  }
+}
+
+
+void v8::Object::SetIndexedPropertiesToExternalArrayData(
+    void* data,
+    ExternalArrayType array_type,
+    int length) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::SetIndexedPropertiesToExternalArrayData()", return);
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  if (!ApiCheck(length >= 0 && length <= i::ExternalArray::kMaxLength,
+                "v8::Object::SetIndexedPropertiesToExternalArrayData()",
+                "length exceeds max acceptable value")) {
+    return;
+  }
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  if (!ApiCheck(!self->IsJSArray(),
+                "v8::Object::SetIndexedPropertiesToExternalArrayData()",
+                "JSArray is not supported")) {
+    return;
+  }
+  PrepareExternalArrayElements(self, data, array_type, length);
+}
+
+
+bool v8::Object::HasIndexedPropertiesInExternalArrayData() {
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  ON_BAILOUT(self->GetIsolate(),
+             "v8::HasIndexedPropertiesInExternalArrayData()",
+             return false);
+  return self->HasExternalArrayElements();
+}
+
+
+void* v8::Object::GetIndexedPropertiesExternalArrayData() {
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  ON_BAILOUT(self->GetIsolate(),
+             "v8::GetIndexedPropertiesExternalArrayData()",
+             return NULL);
+  if (self->HasExternalArrayElements()) {
+    return i::ExternalArray::cast(self->elements())->external_pointer();
+  } else {
+    return NULL;
+  }
+}
+
+
+ExternalArrayType v8::Object::GetIndexedPropertiesExternalArrayDataType() {
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  ON_BAILOUT(self->GetIsolate(),
+             "v8::GetIndexedPropertiesExternalArrayDataType()",
+             return static_cast<ExternalArrayType>(-1));
+  switch (self->elements()->map()->instance_type()) {
+    case i::EXTERNAL_BYTE_ARRAY_TYPE:
+      return kExternalByteArray;
+    case i::EXTERNAL_UNSIGNED_BYTE_ARRAY_TYPE:
+      return kExternalUnsignedByteArray;
+    case i::EXTERNAL_SHORT_ARRAY_TYPE:
+      return kExternalShortArray;
+    case i::EXTERNAL_UNSIGNED_SHORT_ARRAY_TYPE:
+      return kExternalUnsignedShortArray;
+    case i::EXTERNAL_INT_ARRAY_TYPE:
+      return kExternalIntArray;
+    case i::EXTERNAL_UNSIGNED_INT_ARRAY_TYPE:
+      return kExternalUnsignedIntArray;
+    case i::EXTERNAL_FLOAT_ARRAY_TYPE:
+      return kExternalFloatArray;
+    case i::EXTERNAL_DOUBLE_ARRAY_TYPE:
+      return kExternalDoubleArray;
+    case i::EXTERNAL_PIXEL_ARRAY_TYPE:
+      return kExternalPixelArray;
+    default:
+      return static_cast<ExternalArrayType>(-1);
+  }
+}
+
+
+int v8::Object::GetIndexedPropertiesExternalArrayDataLength() {
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  ON_BAILOUT(self->GetIsolate(),
+             "v8::GetIndexedPropertiesExternalArrayDataLength()",
+             return 0);
+  if (self->HasExternalArrayElements()) {
+    return i::ExternalArray::cast(self->elements())->length();
+  } else {
+    return -1;
+  }
+}
+
+
+bool v8::Object::IsCallable() {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::IsCallable()", return false);
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::JSObject> obj = Utils::OpenHandle(this);
+  if (obj->IsJSFunction()) return true;
+  return i::Execution::GetFunctionDelegate(obj)->IsJSFunction();
+}
+
+
+Local<v8::Value> Object::CallAsFunction(v8::Handle<v8::Object> recv,
+                                        int argc,
+                                        v8::Handle<v8::Value> argv[]) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::CallAsFunction()",
+             return Local<v8::Value>());
+  LOG_API(isolate, "Object::CallAsFunction");
+  ENTER_V8(isolate);
+  i::Logger::TimerEventScope timer_scope(
+      isolate, i::Logger::TimerEventScope::v8_execute);
+  i::HandleScope scope(isolate);
+  i::Handle<i::JSObject> obj = Utils::OpenHandle(this);
+  i::Handle<i::Object> recv_obj = Utils::OpenHandle(*recv);
+  STATIC_ASSERT(sizeof(v8::Handle<v8::Value>) == sizeof(i::Object**));
+  i::Handle<i::Object>* args = reinterpret_cast<i::Handle<i::Object>*>(argv);
+  i::Handle<i::JSFunction> fun = i::Handle<i::JSFunction>();
+  if (obj->IsJSFunction()) {
+    fun = i::Handle<i::JSFunction>::cast(obj);
+  } else {
+    EXCEPTION_PREAMBLE(isolate);
+    i::Handle<i::Object> delegate =
+        i::Execution::TryGetFunctionDelegate(obj, &has_pending_exception);
+    EXCEPTION_BAILOUT_CHECK(isolate, Local<Value>());
+    fun = i::Handle<i::JSFunction>::cast(delegate);
+    recv_obj = obj;
+  }
+  EXCEPTION_PREAMBLE(isolate);
+  i::Handle<i::Object> returned =
+      i::Execution::Call(fun, recv_obj, argc, args, &has_pending_exception);
+  EXCEPTION_BAILOUT_CHECK_DO_CALLBACK(isolate, Local<Value>());
+  return Utils::ToLocal(scope.CloseAndEscape(returned));
+}
+
+
+Local<v8::Value> Object::CallAsConstructor(int argc,
+                                           v8::Handle<v8::Value> argv[]) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::CallAsConstructor()",
+             return Local<v8::Object>());
+  LOG_API(isolate, "Object::CallAsConstructor");
+  ENTER_V8(isolate);
+  i::Logger::TimerEventScope timer_scope(
+      isolate, i::Logger::TimerEventScope::v8_execute);
+  i::HandleScope scope(isolate);
+  i::Handle<i::JSObject> obj = Utils::OpenHandle(this);
+  STATIC_ASSERT(sizeof(v8::Handle<v8::Value>) == sizeof(i::Object**));
+  i::Handle<i::Object>* args = reinterpret_cast<i::Handle<i::Object>*>(argv);
+  if (obj->IsJSFunction()) {
+    i::Handle<i::JSFunction> fun = i::Handle<i::JSFunction>::cast(obj);
+    EXCEPTION_PREAMBLE(isolate);
+    i::Handle<i::Object> returned =
+        i::Execution::New(fun, argc, args, &has_pending_exception);
+    EXCEPTION_BAILOUT_CHECK_DO_CALLBACK(isolate, Local<v8::Object>());
+    return Utils::ToLocal(scope.CloseAndEscape(
+        i::Handle<i::JSObject>::cast(returned)));
+  }
+  EXCEPTION_PREAMBLE(isolate);
+  i::Handle<i::Object> delegate =
+      i::Execution::TryGetConstructorDelegate(obj, &has_pending_exception);
+  EXCEPTION_BAILOUT_CHECK(isolate, Local<v8::Object>());
+  if (!delegate->IsUndefined()) {
+    i::Handle<i::JSFunction> fun = i::Handle<i::JSFunction>::cast(delegate);
+    EXCEPTION_PREAMBLE(isolate);
+    i::Handle<i::Object> returned =
+        i::Execution::Call(fun, obj, argc, args, &has_pending_exception);
+    EXCEPTION_BAILOUT_CHECK_DO_CALLBACK(isolate, Local<v8::Object>());
+    ASSERT(!delegate->IsUndefined());
+    return Utils::ToLocal(scope.CloseAndEscape(returned));
+  }
+  return Local<v8::Object>();
+}
+
+
+Local<v8::Object> Function::NewInstance() const {
+  return NewInstance(0, NULL);
+}
+
+
+Local<v8::Object> Function::NewInstance(int argc,
+                                        v8::Handle<v8::Value> argv[]) const {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Function::NewInstance()",
+             return Local<v8::Object>());
+  LOG_API(isolate, "Function::NewInstance");
+  ENTER_V8(isolate);
+  i::Logger::TimerEventScope timer_scope(
+      isolate, i::Logger::TimerEventScope::v8_execute);
+  HandleScope scope(reinterpret_cast<Isolate*>(isolate));
+  i::Handle<i::JSFunction> function = Utils::OpenHandle(this);
+  STATIC_ASSERT(sizeof(v8::Handle<v8::Value>) == sizeof(i::Object**));
+  i::Handle<i::Object>* args = reinterpret_cast<i::Handle<i::Object>*>(argv);
+  EXCEPTION_PREAMBLE(isolate);
+  i::Handle<i::Object> returned =
+      i::Execution::New(function, argc, args, &has_pending_exception);
+  EXCEPTION_BAILOUT_CHECK_DO_CALLBACK(isolate, Local<v8::Object>());
+  return scope.Close(Utils::ToLocal(i::Handle<i::JSObject>::cast(returned)));
+}
+
+
+Local<v8::Value> Function::Call(v8::Handle<v8::Object> recv, int argc,
+                                v8::Handle<v8::Value> argv[]) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Function::Call()", return Local<v8::Value>());
+  LOG_API(isolate, "Function::Call");
+  ENTER_V8(isolate);
+  i::Logger::TimerEventScope timer_scope(
+      isolate, i::Logger::TimerEventScope::v8_execute);
+  i::Object* raw_result = NULL;
+  {
+    i::HandleScope scope(isolate);
+    i::Handle<i::JSFunction> fun = Utils::OpenHandle(this);
+    i::Handle<i::Object> recv_obj = Utils::OpenHandle(*recv);
+    STATIC_ASSERT(sizeof(v8::Handle<v8::Value>) == sizeof(i::Object**));
+    i::Handle<i::Object>* args = reinterpret_cast<i::Handle<i::Object>*>(argv);
+    EXCEPTION_PREAMBLE(isolate);
+    i::Handle<i::Object> returned =
+        i::Execution::Call(fun, recv_obj, argc, args, &has_pending_exception);
+    EXCEPTION_BAILOUT_CHECK_DO_CALLBACK(isolate, Local<Object>());
+    raw_result = *returned;
+  }
+  i::Handle<i::Object> result(raw_result, isolate);
+  return Utils::ToLocal(result);
+}
+
+
+void Function::SetName(v8::Handle<v8::String> name) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ENTER_V8(isolate);
+  USE(isolate);
+  i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
+  func->shared()->set_name(*Utils::OpenHandle(*name));
+}
+
+
+Handle<Value> Function::GetName() const {
+  i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
+  return Utils::ToLocal(i::Handle<i::Object>(func->shared()->name(),
+                                             func->GetIsolate()));
+}
+
+
+Handle<Value> Function::GetInferredName() const {
+  i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
+  return Utils::ToLocal(i::Handle<i::Object>(func->shared()->inferred_name(),
+                                             func->GetIsolate()));
+}
+
+
+ScriptOrigin Function::GetScriptOrigin() const {
+  i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
+  if (func->shared()->script()->IsScript()) {
+    i::Handle<i::Script> script(i::Script::cast(func->shared()->script()));
+    i::Handle<i::Object> scriptName = GetScriptNameOrSourceURL(script);
+    v8::ScriptOrigin origin(
+      Utils::ToLocal(scriptName),
+      v8::Integer::New(script->line_offset()->value()),
+      v8::Integer::New(script->column_offset()->value()));
+    return origin;
+  }
+  return v8::ScriptOrigin(Handle<Value>());
+}
+
+
+const int Function::kLineOffsetNotFound = -1;
+
+
+int Function::GetScriptLineNumber() const {
+  i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
+  if (func->shared()->script()->IsScript()) {
+    i::Handle<i::Script> script(i::Script::cast(func->shared()->script()));
+    return i::GetScriptLineNumber(script, func->shared()->start_position());
+  }
+  return kLineOffsetNotFound;
+}
+
+
+int Function::GetScriptColumnNumber() const {
+  i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
+  if (func->shared()->script()->IsScript()) {
+    i::Handle<i::Script> script(i::Script::cast(func->shared()->script()));
+    return i::GetScriptColumnNumber(script, func->shared()->start_position());
+  }
+  return kLineOffsetNotFound;
+}
+
+
+Handle<Value> Function::GetScriptId() const {
+  i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
+  if (!func->shared()->script()->IsScript())
+    return v8::Undefined();
+  i::Handle<i::Script> script(i::Script::cast(func->shared()->script()));
+  return Utils::ToLocal(i::Handle<i::Object>(script->id(), func->GetIsolate()));
+}
+
+
+int Function::ScriptId() const {
+  i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
+  if (!func->shared()->script()->IsScript()) return v8::Script::kNoScriptId;
+  i::Handle<i::Script> script(i::Script::cast(func->shared()->script()));
+  return script->id()->value();
+}
+
+
+int String::Length() const {
+  i::Handle<i::String> str = Utils::OpenHandle(this);
+  if (IsDeadCheck(str->GetIsolate(), "v8::String::Length()")) return 0;
+  return str->length();
+}
+
+
+bool String::IsOneByte() const {
+  i::Handle<i::String> str = Utils::OpenHandle(this);
+  if (IsDeadCheck(str->GetIsolate(), "v8::String::IsOneByte()")) {
+    return false;
+  }
+  return str->HasOnlyOneByteChars();
+}
+
+
+// Helpers for ContainsOnlyOneByteHelper
+template<size_t size> struct OneByteMask;
+template<> struct OneByteMask<4> {
+  static const uint32_t value = 0xFF00FF00;
+};
+template<> struct OneByteMask<8> {
+  static const uint64_t value = V8_2PART_UINT64_C(0xFF00FF00, FF00FF00);
+};
+static const uintptr_t kOneByteMask = OneByteMask<sizeof(uintptr_t)>::value;
+static const uintptr_t kAlignmentMask = sizeof(uintptr_t) - 1;
+static inline bool Unaligned(const uint16_t* chars) {
+  return reinterpret_cast<const uintptr_t>(chars) & kAlignmentMask;
+}
+
+
+static inline const uint16_t* Align(const uint16_t* chars) {
+  return reinterpret_cast<uint16_t*>(
+    reinterpret_cast<uintptr_t>(chars) & ~kAlignmentMask);
+}
+
+class ContainsOnlyOneByteHelper {
+ public:
+  ContainsOnlyOneByteHelper() : is_one_byte_(true) {}
+  bool Check(i::String* string) {
+    i::ConsString* cons_string = i::String::VisitFlat(this, string, 0);
+    if (cons_string == NULL) return is_one_byte_;
+    return CheckCons(cons_string);
+  }
+  void VisitOneByteString(const uint8_t* chars, int length) {
+    // Nothing to do.
+  }
+  void VisitTwoByteString(const uint16_t* chars, int length) {
+    // Accumulated bits.
+    uintptr_t acc = 0;
+    // Align to uintptr_t.
+    const uint16_t* end = chars + length;
+    while (Unaligned(chars) && chars != end) {
+        acc |= *chars++;
+    }
+    // Read word aligned in blocks,
+    // checking the return value at the end of each block.
+    const uint16_t* aligned_end = Align(end);
+    const int increment = sizeof(uintptr_t)/sizeof(uint16_t);
+    const int inner_loops = 16;
+    while (chars + inner_loops*increment < aligned_end) {
+      for (int i = 0; i < inner_loops; i++) {
+        acc |= *reinterpret_cast<const uintptr_t*>(chars);
+        chars += increment;
+      }
+      // Check for early return.
+      if ((acc & kOneByteMask) != 0) {
+        is_one_byte_ = false;
+        return;
+      }
+    }
+    // Read the rest.
+    while (chars != end) {
+      acc |= *chars++;
+    }
+    // Check result.
+    if ((acc & kOneByteMask) != 0) is_one_byte_ = false;
+  }
+
+ private:
+  bool CheckCons(i::ConsString* cons_string) {
+    while (true) {
+      // Check left side if flat.
+      i::String* left = cons_string->first();
+      i::ConsString* left_as_cons =
+          i::String::VisitFlat(this, left, 0);
+      if (!is_one_byte_) return false;
+      // Check right side if flat.
+      i::String* right = cons_string->second();
+      i::ConsString* right_as_cons =
+          i::String::VisitFlat(this, right, 0);
+      if (!is_one_byte_) return false;
+      // Standard recurse/iterate trick.
+      if (left_as_cons != NULL && right_as_cons != NULL) {
+        if (left->length() < right->length()) {
+          CheckCons(left_as_cons);
+          cons_string = right_as_cons;
+        } else {
+          CheckCons(right_as_cons);
+          cons_string = left_as_cons;
+        }
+        // Check fast return.
+        if (!is_one_byte_) return false;
+        continue;
+      }
+      // Descend left in place.
+      if (left_as_cons != NULL) {
+        cons_string = left_as_cons;
+        continue;
+      }
+      // Descend right in place.
+      if (right_as_cons != NULL) {
+        cons_string = right_as_cons;
+        continue;
+      }
+      // Terminate.
+      break;
+    }
+    return is_one_byte_;
+  }
+  bool is_one_byte_;
+  DISALLOW_COPY_AND_ASSIGN(ContainsOnlyOneByteHelper);
+};
+
+
+bool String::ContainsOnlyOneByte() const {
+  i::Handle<i::String> str = Utils::OpenHandle(this);
+  if (IsDeadCheck(str->GetIsolate(),
+                  "v8::String::ContainsOnlyOneByte()")) {
+    return false;
+  }
+  if (str->HasOnlyOneByteChars()) return true;
+  ContainsOnlyOneByteHelper helper;
+  return helper.Check(*str);
+}
+
+
+class Utf8LengthHelper : public i::AllStatic {
+ public:
+  enum State {
+    kEndsWithLeadingSurrogate = 1 << 0,
+    kStartsWithTrailingSurrogate = 1 << 1,
+    kLeftmostEdgeIsCalculated = 1 << 2,
+    kRightmostEdgeIsCalculated = 1 << 3,
+    kLeftmostEdgeIsSurrogate = 1 << 4,
+    kRightmostEdgeIsSurrogate = 1 << 5
+  };
+
+  static const uint8_t kInitialState = 0;
+
+  static inline bool EndsWithSurrogate(uint8_t state) {
+    return state & kEndsWithLeadingSurrogate;
+  }
+
+  static inline bool StartsWithSurrogate(uint8_t state) {
+    return state & kStartsWithTrailingSurrogate;
+  }
+
+  class Visitor {
+   public:
+    inline explicit Visitor()
+      : utf8_length_(0),
+        state_(kInitialState) {}
+
+    void VisitOneByteString(const uint8_t* chars, int length) {
+      int utf8_length = 0;
+      // Add in length 1 for each non-ASCII character.
+      for (int i = 0; i < length; i++) {
+        utf8_length += *chars++ >> 7;
+      }
+      // Add in length 1 for each character.
+      utf8_length_ = utf8_length + length;
+      state_ = kInitialState;
+    }
+
+    void VisitTwoByteString(const uint16_t* chars, int length) {
+      int utf8_length = 0;
+      int last_character = unibrow::Utf16::kNoPreviousCharacter;
+      for (int i = 0; i < length; i++) {
+        uint16_t c = chars[i];
+        utf8_length += unibrow::Utf8::Length(c, last_character);
+        last_character = c;
+      }
+      utf8_length_ = utf8_length;
+      uint8_t state = 0;
+      if (unibrow::Utf16::IsTrailSurrogate(chars[0])) {
+        state |= kStartsWithTrailingSurrogate;
+      }
+      if (unibrow::Utf16::IsLeadSurrogate(chars[length-1])) {
+        state |= kEndsWithLeadingSurrogate;
+      }
+      state_ = state;
+    }
+
+    static i::ConsString* VisitFlat(i::String* string,
+                                    int* length,
+                                    uint8_t* state) {
+      Visitor visitor;
+      i::ConsString* cons_string = i::String::VisitFlat(&visitor, string);
+      *length = visitor.utf8_length_;
+      *state = visitor.state_;
+      return cons_string;
+    }
+
+   private:
+    int utf8_length_;
+    uint8_t state_;
+    DISALLOW_COPY_AND_ASSIGN(Visitor);
+  };
+
+  static inline void MergeLeafLeft(int* length,
+                                   uint8_t* state,
+                                   uint8_t leaf_state) {
+    bool edge_surrogate = StartsWithSurrogate(leaf_state);
+    if (!(*state & kLeftmostEdgeIsCalculated)) {
+      ASSERT(!(*state & kLeftmostEdgeIsSurrogate));
+      *state |= kLeftmostEdgeIsCalculated
+          | (edge_surrogate ? kLeftmostEdgeIsSurrogate : 0);
+    } else if (EndsWithSurrogate(*state) && edge_surrogate) {
+      *length -= unibrow::Utf8::kBytesSavedByCombiningSurrogates;
+    }
+    if (EndsWithSurrogate(leaf_state)) {
+      *state |= kEndsWithLeadingSurrogate;
+    } else {
+      *state &= ~kEndsWithLeadingSurrogate;
+    }
+  }
+
+  static inline void MergeLeafRight(int* length,
+                                    uint8_t* state,
+                                    uint8_t leaf_state) {
+    bool edge_surrogate = EndsWithSurrogate(leaf_state);
+    if (!(*state & kRightmostEdgeIsCalculated)) {
+      ASSERT(!(*state & kRightmostEdgeIsSurrogate));
+      *state |= (kRightmostEdgeIsCalculated
+          | (edge_surrogate ? kRightmostEdgeIsSurrogate : 0));
+    } else if (edge_surrogate && StartsWithSurrogate(*state)) {
+      *length -= unibrow::Utf8::kBytesSavedByCombiningSurrogates;
+    }
+    if (StartsWithSurrogate(leaf_state)) {
+      *state |= kStartsWithTrailingSurrogate;
+    } else {
+      *state &= ~kStartsWithTrailingSurrogate;
+    }
+  }
+
+  static inline void MergeTerminal(int* length,
+                                   uint8_t state,
+                                   uint8_t* state_out) {
+    ASSERT((state & kLeftmostEdgeIsCalculated) &&
+           (state & kRightmostEdgeIsCalculated));
+    if (EndsWithSurrogate(state) && StartsWithSurrogate(state)) {
+      *length -= unibrow::Utf8::kBytesSavedByCombiningSurrogates;
+    }
+    *state_out = kInitialState |
+        (state & kLeftmostEdgeIsSurrogate ? kStartsWithTrailingSurrogate : 0) |
+        (state & kRightmostEdgeIsSurrogate ? kEndsWithLeadingSurrogate : 0);
+  }
+
+  static int Calculate(i::ConsString* current, uint8_t* state_out) {
+    using namespace internal;
+    int total_length = 0;
+    uint8_t state = kInitialState;
+    while (true) {
+      i::String* left = current->first();
+      i::String* right = current->second();
+      uint8_t right_leaf_state;
+      uint8_t left_leaf_state;
+      int leaf_length;
+      ConsString* left_as_cons =
+          Visitor::VisitFlat(left, &leaf_length, &left_leaf_state);
+      if (left_as_cons == NULL) {
+        total_length += leaf_length;
+        MergeLeafLeft(&total_length, &state, left_leaf_state);
+      }
+      ConsString* right_as_cons =
+          Visitor::VisitFlat(right, &leaf_length, &right_leaf_state);
+      if (right_as_cons == NULL) {
+        total_length += leaf_length;
+        MergeLeafRight(&total_length, &state, right_leaf_state);
+        if (left_as_cons != NULL) {
+          // 1 Leaf node. Descend in place.
+          current = left_as_cons;
+          continue;
+        } else {
+          // Terminal node.
+          MergeTerminal(&total_length, state, state_out);
+          return total_length;
+        }
+      } else if (left_as_cons == NULL) {
+        // 1 Leaf node. Descend in place.
+        current = right_as_cons;
+        continue;
+      }
+      // Both strings are ConsStrings.
+      // Recurse on smallest.
+      if (left->length() < right->length()) {
+        total_length += Calculate(left_as_cons, &left_leaf_state);
+        MergeLeafLeft(&total_length, &state, left_leaf_state);
+        current = right_as_cons;
+      } else {
+        total_length += Calculate(right_as_cons, &right_leaf_state);
+        MergeLeafRight(&total_length, &state, right_leaf_state);
+        current = left_as_cons;
+      }
+    }
+    UNREACHABLE();
+    return 0;
+  }
+
+  static inline int Calculate(i::ConsString* current) {
+    uint8_t state = kInitialState;
+    return Calculate(current, &state);
+  }
+
+ private:
+  DISALLOW_IMPLICIT_CONSTRUCTORS(Utf8LengthHelper);
+};
+
+
+static int Utf8Length(i::String* str, i::Isolate* isolate) {
+  int length = str->length();
+  if (length == 0) return 0;
+  uint8_t state;
+  i::ConsString* cons_string =
+      Utf8LengthHelper::Visitor::VisitFlat(str, &length, &state);
+  if (cons_string == NULL) return length;
+  return Utf8LengthHelper::Calculate(cons_string);
+}
+
+
+int String::Utf8Length() const {
+  i::Handle<i::String> str = Utils::OpenHandle(this);
+  i::Isolate* isolate = str->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::String::Utf8Length()")) return 0;
+  return v8::Utf8Length(*str, isolate);
+}
+
+
+class Utf8WriterVisitor {
+ public:
+  Utf8WriterVisitor(
+      char* buffer, int capacity, bool skip_capacity_check)
+    : early_termination_(false),
+      last_character_(unibrow::Utf16::kNoPreviousCharacter),
+      buffer_(buffer),
+      start_(buffer),
+      capacity_(capacity),
+      skip_capacity_check_(capacity == -1 || skip_capacity_check),
+      utf16_chars_read_(0) {
+  }
+
+  static int WriteEndCharacter(uint16_t character,
+                               int last_character,
+                               int remaining,
+                               char* const buffer) {
+    using namespace unibrow;
+    ASSERT(remaining > 0);
+    // We can't use a local buffer here because Encode needs to modify
+    // previous characters in the stream.  We know, however, that
+    // exactly one character will be advanced.
+    if (Utf16::IsTrailSurrogate(character) &&
+        Utf16::IsLeadSurrogate(last_character)) {
+      int written = Utf8::Encode(buffer, character, last_character);
+      ASSERT(written == 1);
+      return written;
+    }
+    // Use a scratch buffer to check the required characters.
+    char temp_buffer[Utf8::kMaxEncodedSize];
+    // Can't encode using last_character as gcc has array bounds issues.
+    int written = Utf8::Encode(temp_buffer,
+                               character,
+                               Utf16::kNoPreviousCharacter);
+    // Won't fit.
+    if (written > remaining) return 0;
+    // Copy over the character from temp_buffer.
+    for (int j = 0; j < written; j++) {
+      buffer[j] = temp_buffer[j];
+    }
+    return written;
+  }
+
+  template<typename Char>
+  void Visit(const Char* chars, const int length) {
+    using namespace unibrow;
+    ASSERT(!early_termination_);
+    if (length == 0) return;
+    // Copy state to stack.
+    char* buffer = buffer_;
+    int last_character =
+        sizeof(Char) == 1 ? Utf16::kNoPreviousCharacter : last_character_;
+    int i = 0;
+    // Do a fast loop where there is no exit capacity check.
+    while (true) {
+      int fast_length;
+      if (skip_capacity_check_) {
+        fast_length = length;
+      } else {
+        int remaining_capacity = capacity_ - static_cast<int>(buffer - start_);
+        // Need enough space to write everything but one character.
+        STATIC_ASSERT(Utf16::kMaxExtraUtf8BytesForOneUtf16CodeUnit == 3);
+        int max_size_per_char =  sizeof(Char) == 1 ? 2 : 3;
+        int writable_length =
+            (remaining_capacity - max_size_per_char)/max_size_per_char;
+        // Need to drop into slow loop.
+        if (writable_length <= 0) break;
+        fast_length = i + writable_length;
+        if (fast_length > length) fast_length = length;
+      }
+      // Write the characters to the stream.
+      if (sizeof(Char) == 1) {
+        for (; i < fast_length; i++) {
+          buffer +=
+              Utf8::EncodeOneByte(buffer, static_cast<uint8_t>(*chars++));
+          ASSERT(capacity_ == -1 || (buffer - start_) <= capacity_);
+        }
+      } else {
+        for (; i < fast_length; i++) {
+          uint16_t character = *chars++;
+          buffer += Utf8::Encode(buffer, character, last_character);
+          last_character = character;
+          ASSERT(capacity_ == -1 || (buffer - start_) <= capacity_);
+        }
+      }
+      // Array is fully written. Exit.
+      if (fast_length == length) {
+        // Write state back out to object.
+        last_character_ = last_character;
+        buffer_ = buffer;
+        utf16_chars_read_ += length;
+        return;
+      }
+    }
+    ASSERT(!skip_capacity_check_);
+    // Slow loop. Must check capacity on each iteration.
+    int remaining_capacity = capacity_ - static_cast<int>(buffer - start_);
+    ASSERT(remaining_capacity >= 0);
+    for (; i < length && remaining_capacity > 0; i++) {
+      uint16_t character = *chars++;
+      int written = WriteEndCharacter(character,
+                                      last_character,
+                                      remaining_capacity,
+                                      buffer);
+      if (written == 0) {
+        early_termination_ = true;
+        break;
+      }
+      buffer += written;
+      remaining_capacity -= written;
+      last_character = character;
+    }
+    // Write state back out to object.
+    last_character_ = last_character;
+    buffer_ = buffer;
+    utf16_chars_read_ += i;
+  }
+
+  inline bool IsDone() {
+    return early_termination_;
+  }
+
+  inline void VisitOneByteString(const uint8_t* chars, int length) {
+    Visit(chars, length);
+  }
+
+  inline void VisitTwoByteString(const uint16_t* chars, int length) {
+    Visit(chars, length);
+  }
+
+  int CompleteWrite(bool write_null, int* utf16_chars_read_out) {
+    // Write out number of utf16 characters written to the stream.
+    if (utf16_chars_read_out != NULL) {
+      *utf16_chars_read_out = utf16_chars_read_;
+    }
+    // Only null terminate if all of the string was written and there's space.
+    if (write_null &&
+        !early_termination_ &&
+        (capacity_ == -1 || (buffer_ - start_) < capacity_)) {
+      *buffer_++ = '\0';
+    }
+    return static_cast<int>(buffer_ - start_);
+  }
+
+ private:
+  bool early_termination_;
+  int last_character_;
+  char* buffer_;
+  char* const start_;
+  int capacity_;
+  bool const skip_capacity_check_;
+  int utf16_chars_read_;
+  DISALLOW_IMPLICIT_CONSTRUCTORS(Utf8WriterVisitor);
+};
+
+
+static bool RecursivelySerializeToUtf8(i::String* current,
+                                      Utf8WriterVisitor* writer,
+                                      int recursion_budget) {
+  while (!writer->IsDone()) {
+    i::ConsString* cons_string = i::String::VisitFlat(writer, current);
+    if (cons_string == NULL) return true;  // Leaf node.
+    if (recursion_budget <= 0) return false;
+    // Must write the left branch first.
+    i::String* first = cons_string->first();
+    bool success = RecursivelySerializeToUtf8(first,
+                                              writer,
+                                              recursion_budget - 1);
+    if (!success) return false;
+    // Inline tail recurse for right branch.
+    current = cons_string->second();
+  }
+  return true;
+}
+
+
+int String::WriteUtf8(char* buffer,
+                      int capacity,
+                      int* nchars_ref,
+                      int options) const {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::String::WriteUtf8()")) return 0;
+  LOG_API(isolate, "String::WriteUtf8");
+  ENTER_V8(isolate);
+  i::Handle<i::String> str = Utils::OpenHandle(this);
+  if (options & HINT_MANY_WRITES_EXPECTED) {
+    FlattenString(str);  // Flatten the string for efficiency.
+  }
+  const int string_length = str->length();
+  bool write_null = !(options & NO_NULL_TERMINATION);
+  // First check if we can just write the string without checking capacity.
+  if (capacity == -1 || capacity / 3 >= string_length) {
+    Utf8WriterVisitor writer(buffer, capacity, true);
+    const int kMaxRecursion = 100;
+    bool success = RecursivelySerializeToUtf8(*str, &writer, kMaxRecursion);
+    if (success) return writer.CompleteWrite(write_null, nchars_ref);
+  } else if (capacity >= string_length) {
+    // First check that the buffer is large enough.
+    int utf8_bytes = v8::Utf8Length(*str, str->GetIsolate());
+    if (utf8_bytes <= capacity) {
+      // ASCII fast path.
+      if (utf8_bytes == string_length) {
+        WriteOneByte(reinterpret_cast<uint8_t*>(buffer), 0, capacity, options);
+        if (nchars_ref != NULL) *nchars_ref = string_length;
+        if (write_null && (utf8_bytes+1 <= capacity)) {
+          return string_length + 1;
+        }
+        return string_length;
+      }
+      if (write_null && (utf8_bytes+1 > capacity)) {
+        options |= NO_NULL_TERMINATION;
+      }
+      // Recurse once without a capacity limit.
+      // This will get into the first branch above.
+      // TODO(dcarney) Check max left rec. in Utf8Length and fall through.
+      return WriteUtf8(buffer, -1, nchars_ref, options);
+    }
+  }
+  // Recursive slow path can potentially be unreasonable slow. Flatten.
+  str = FlattenGetString(str);
+  Utf8WriterVisitor writer(buffer, capacity, false);
+  i::String::VisitFlat(&writer, *str);
+  return writer.CompleteWrite(write_null, nchars_ref);
+}
+
+
+int String::WriteAscii(char* buffer,
+                       int start,
+                       int length,
+                       int options) const {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::String::WriteAscii()")) return 0;
+  LOG_API(isolate, "String::WriteAscii");
+  ENTER_V8(isolate);
+  ASSERT(start >= 0 && length >= -1);
+  i::Handle<i::String> str = Utils::OpenHandle(this);
+  isolate->string_tracker()->RecordWrite(str);
+  if (options & HINT_MANY_WRITES_EXPECTED) {
+    FlattenString(str);  // Flatten the string for efficiency.
+  }
+
+  int end = length;
+  if ((length == -1) || (length > str->length() - start)) {
+    end = str->length() - start;
+  }
+  if (end < 0) return 0;
+  i::StringCharacterStream write_stream(*str, isolate->write_iterator(), start);
+  int i;
+  for (i = 0; i < end; i++) {
+    char c = static_cast<char>(write_stream.GetNext());
+    if (c == '\0' && !(options & PRESERVE_ASCII_NULL)) c = ' ';
+    buffer[i] = c;
+  }
+  if (!(options & NO_NULL_TERMINATION) && (length == -1 || i < length)) {
+    buffer[i] = '\0';
+  }
+  return i;
+}
+
+
+template<typename CharType>
+static inline int WriteHelper(const String* string,
+                              CharType* buffer,
+                              int start,
+                              int length,
+                              int options) {
+  i::Isolate* isolate = Utils::OpenHandle(string)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::String::Write()")) return 0;
+  LOG_API(isolate, "String::Write");
+  ENTER_V8(isolate);
+  ASSERT(start >= 0 && length >= -1);
+  i::Handle<i::String> str = Utils::OpenHandle(string);
+  isolate->string_tracker()->RecordWrite(str);
+  if (options & String::HINT_MANY_WRITES_EXPECTED) {
+    // Flatten the string for efficiency.  This applies whether we are
+    // using StringCharacterStream or Get(i) to access the characters.
+    FlattenString(str);
+  }
+  int end = start + length;
+  if ((length == -1) || (length > str->length() - start) )
+    end = str->length();
+  if (end < 0) return 0;
+  i::String::WriteToFlat(*str, buffer, start, end);
+  if (!(options & String::NO_NULL_TERMINATION) &&
+      (length == -1 || end - start < length)) {
+    buffer[end - start] = '\0';
+  }
+  return end - start;
+}
+
+
+int String::WriteOneByte(uint8_t* buffer,
+                         int start,
+                         int length,
+                         int options) const {
+  return WriteHelper(this, buffer, start, length, options);
+}
+
+
+int String::Write(uint16_t* buffer,
+                  int start,
+                  int length,
+                  int options) const {
+  return WriteHelper(this, buffer, start, length, options);
+}
+
+
+bool v8::String::IsExternal() const {
+  i::Handle<i::String> str = Utils::OpenHandle(this);
+  if (IsDeadCheck(str->GetIsolate(), "v8::String::IsExternal()")) {
+    return false;
+  }
+  EnsureInitializedForIsolate(str->GetIsolate(), "v8::String::IsExternal()");
+  return i::StringShape(*str).IsExternalTwoByte();
+}
+
+
+bool v8::String::IsExternalAscii() const {
+  i::Handle<i::String> str = Utils::OpenHandle(this);
+  if (IsDeadCheck(str->GetIsolate(), "v8::String::IsExternalAscii()")) {
+    return false;
+  }
+  return i::StringShape(*str).IsExternalAscii();
+}
+
+
+void v8::String::VerifyExternalStringResource(
+    v8::String::ExternalStringResource* value) const {
+  i::Handle<i::String> str = Utils::OpenHandle(this);
+  const v8::String::ExternalStringResource* expected;
+  if (i::StringShape(*str).IsExternalTwoByte()) {
+    const void* resource =
+        i::Handle<i::ExternalTwoByteString>::cast(str)->resource();
+    expected = reinterpret_cast<const ExternalStringResource*>(resource);
+  } else {
+    expected = NULL;
+  }
+  CHECK_EQ(expected, value);
+}
+
+void v8::String::VerifyExternalStringResourceBase(
+    v8::String::ExternalStringResourceBase* value, Encoding encoding) const {
+  i::Handle<i::String> str = Utils::OpenHandle(this);
+  const v8::String::ExternalStringResourceBase* expected;
+  Encoding expectedEncoding;
+  if (i::StringShape(*str).IsExternalAscii()) {
+    const void* resource =
+        i::Handle<i::ExternalAsciiString>::cast(str)->resource();
+    expected = reinterpret_cast<const ExternalStringResourceBase*>(resource);
+    expectedEncoding = ASCII_ENCODING;
+  } else if (i::StringShape(*str).IsExternalTwoByte()) {
+    const void* resource =
+        i::Handle<i::ExternalTwoByteString>::cast(str)->resource();
+    expected = reinterpret_cast<const ExternalStringResourceBase*>(resource);
+    expectedEncoding = TWO_BYTE_ENCODING;
+  } else {
+    expected = NULL;
+    expectedEncoding = str->IsOneByteRepresentation() ? ASCII_ENCODING
+                                                    : TWO_BYTE_ENCODING;
+  }
+  CHECK_EQ(expected, value);
+  CHECK_EQ(expectedEncoding, encoding);
+}
+
+const v8::String::ExternalAsciiStringResource*
+      v8::String::GetExternalAsciiStringResource() const {
+  i::Handle<i::String> str = Utils::OpenHandle(this);
+  if (IsDeadCheck(str->GetIsolate(),
+                  "v8::String::GetExternalAsciiStringResource()")) {
+    return NULL;
+  }
+  if (i::StringShape(*str).IsExternalAscii()) {
+    const void* resource =
+        i::Handle<i::ExternalAsciiString>::cast(str)->resource();
+    return reinterpret_cast<const ExternalAsciiStringResource*>(resource);
+  } else {
+    return NULL;
+  }
+}
+
+
+Local<Value> Symbol::Name() const {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Symbol::Name()"))
+    return Local<Value>();
+  i::Handle<i::Symbol> sym = Utils::OpenHandle(this);
+  i::Handle<i::Object> name(sym->name(), sym->GetIsolate());
+  return Utils::ToLocal(name);
+}
+
+
+double Number::Value() const {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Number::Value()")) return 0;
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  return obj->Number();
+}
+
+
+bool Boolean::Value() const {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Boolean::Value()")) return false;
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  return obj->IsTrue();
+}
+
+
+int64_t Integer::Value() const {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Integer::Value()")) return 0;
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  if (obj->IsSmi()) {
+    return i::Smi::cast(*obj)->value();
+  } else {
+    return static_cast<int64_t>(obj->Number());
+  }
+}
+
+
+int32_t Int32::Value() const {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Int32::Value()")) return 0;
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  if (obj->IsSmi()) {
+    return i::Smi::cast(*obj)->value();
+  } else {
+    return static_cast<int32_t>(obj->Number());
+  }
+}
+
+
+uint32_t Uint32::Value() const {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Uint32::Value()")) return 0;
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  if (obj->IsSmi()) {
+    return i::Smi::cast(*obj)->value();
+  } else {
+    return static_cast<uint32_t>(obj->Number());
+  }
+}
+
+
+int v8::Object::InternalFieldCount() {
+  i::Handle<i::JSObject> obj = Utils::OpenHandle(this);
+  if (IsDeadCheck(obj->GetIsolate(), "v8::Object::InternalFieldCount()")) {
+    return 0;
+  }
+  return obj->GetInternalFieldCount();
+}
+
+
+static bool InternalFieldOK(i::Handle<i::JSObject> obj,
+                            int index,
+                            const char* location) {
+  return !IsDeadCheck(obj->GetIsolate(), location) &&
+      ApiCheck(index < obj->GetInternalFieldCount(),
+               location,
+               "Internal field out of bounds");
+}
+
+
+Local<Value> v8::Object::SlowGetInternalField(int index) {
+  i::Handle<i::JSObject> obj = Utils::OpenHandle(this);
+  const char* location = "v8::Object::GetInternalField()";
+  if (!InternalFieldOK(obj, index, location)) return Local<Value>();
+  i::Handle<i::Object> value(obj->GetInternalField(index), obj->GetIsolate());
+  return Utils::ToLocal(value);
+}
+
+
+void v8::Object::SetInternalField(int index, v8::Handle<Value> value) {
+  i::Handle<i::JSObject> obj = Utils::OpenHandle(this);
+  const char* location = "v8::Object::SetInternalField()";
+  if (!InternalFieldOK(obj, index, location)) return;
+  i::Handle<i::Object> val = Utils::OpenHandle(*value);
+  obj->SetInternalField(index, *val);
+  ASSERT_EQ(value, GetInternalField(index));
+}
+
+
+void* v8::Object::SlowGetAlignedPointerFromInternalField(int index) {
+  i::Handle<i::JSObject> obj = Utils::OpenHandle(this);
+  const char* location = "v8::Object::GetAlignedPointerFromInternalField()";
+  if (!InternalFieldOK(obj, index, location)) return NULL;
+  return DecodeSmiToAligned(obj->GetInternalField(index), location);
+}
+
+
+void v8::Object::SetAlignedPointerInInternalField(int index, void* value) {
+  i::Handle<i::JSObject> obj = Utils::OpenHandle(this);
+  const char* location = "v8::Object::SetAlignedPointerInInternalField()";
+  if (!InternalFieldOK(obj, index, location)) return;
+  obj->SetInternalField(index, EncodeAlignedAsSmi(value, location));
+  ASSERT_EQ(value, GetAlignedPointerFromInternalField(index));
+}
+
+
+static void* ExternalValue(i::Object* obj) {
+  // Obscure semantics for undefined, but somehow checked in our unit tests...
+  if (obj->IsUndefined()) return NULL;
+  i::Object* foreign = i::JSObject::cast(obj)->GetInternalField(0);
+  return i::Foreign::cast(foreign)->foreign_address();
+}
+
+
+// --- E n v i r o n m e n t ---
+
+
+bool v8::V8::Initialize() {
+  i::Isolate* isolate = i::Isolate::UncheckedCurrent();
+  if (isolate != NULL && isolate->IsInitialized()) {
+    return true;
+  }
+  return InitializeHelper(isolate);
+}
+
+
+void v8::V8::SetEntropySource(EntropySource source) {
+  i::V8::SetEntropySource(source);
+}
+
+
+void v8::V8::SetReturnAddressLocationResolver(
+      ReturnAddressLocationResolver return_address_resolver) {
+  i::V8::SetReturnAddressLocationResolver(return_address_resolver);
+}
+
+
+bool v8::V8::SetFunctionEntryHook(FunctionEntryHook entry_hook) {
+  return SetFunctionEntryHook(Isolate::GetCurrent(), entry_hook);
+}
+
+
+bool v8::V8::SetFunctionEntryHook(Isolate* ext_isolate,
+                                  FunctionEntryHook entry_hook) {
+  ASSERT(ext_isolate != NULL);
+  ASSERT(entry_hook != NULL);
+
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(ext_isolate);
+
+  // The entry hook can only be set before the Isolate is initialized, as
+  // otherwise the Isolate's code stubs generated at initialization won't
+  // contain entry hooks.
+  if (isolate->IsInitialized())
+    return false;
+
+  // Setting an entry hook is a one-way operation, once set, it cannot be
+  // changed or unset.
+  if (isolate->function_entry_hook() != NULL)
+    return false;
+
+  isolate->set_function_entry_hook(entry_hook);
+  return true;
+}
+
+
+void v8::V8::SetJitCodeEventHandler(
+    JitCodeEventOptions options, JitCodeEventHandler event_handler) {
+  i::Isolate* isolate = i::Isolate::Current();
+  // Ensure that logging is initialized for our isolate.
+  isolate->InitializeLoggingAndCounters();
+  isolate->logger()->SetCodeEventHandler(options, event_handler);
+}
+
+void v8::V8::SetArrayBufferAllocator(
+    ArrayBuffer::Allocator* allocator) {
+  if (!ApiCheck(i::V8::ArrayBufferAllocator() == NULL,
+                "v8::V8::SetArrayBufferAllocator",
+                "ArrayBufferAllocator might only be set once"))
+    return;
+  i::V8::SetArrayBufferAllocator(allocator);
+}
+
+
+bool v8::V8::Dispose() {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (!ApiCheck(isolate != NULL && isolate->IsDefaultIsolate(),
+                "v8::V8::Dispose()",
+                "Use v8::Isolate::Dispose() for a non-default isolate.")) {
+    return false;
+  }
+  i::V8::TearDown();
+  return true;
+}
+
+
+HeapStatistics::HeapStatistics(): total_heap_size_(0),
+                                  total_heap_size_executable_(0),
+                                  total_physical_size_(0),
+                                  used_heap_size_(0),
+                                  heap_size_limit_(0) { }
+
+
+void v8::V8::GetHeapStatistics(HeapStatistics* heap_statistics) {
+  i::Isolate* isolate = i::Isolate::UncheckedCurrent();
+  if (isolate == NULL || !isolate->IsInitialized()) {
+    // Isolate is unitialized thus heap is not configured yet.
+    heap_statistics->total_heap_size_ = 0;
+    heap_statistics->total_heap_size_executable_ = 0;
+    heap_statistics->total_physical_size_ = 0;
+    heap_statistics->used_heap_size_ = 0;
+    heap_statistics->heap_size_limit_ = 0;
+    return;
+  }
+  Isolate* ext_isolate = reinterpret_cast<Isolate*>(isolate);
+  return ext_isolate->GetHeapStatistics(heap_statistics);
+}
+
+
+void v8::V8::VisitExternalResources(ExternalResourceVisitor* visitor) {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::V8::VisitExternalResources");
+  isolate->heap()->VisitExternalResources(visitor);
+}
+
+
+class VisitorAdapter : public i::ObjectVisitor {
+ public:
+  explicit VisitorAdapter(PersistentHandleVisitor* visitor)
+      : visitor_(visitor) {}
+  virtual void VisitPointers(i::Object** start, i::Object** end) {
+    UNREACHABLE();
+  }
+  virtual void VisitEmbedderReference(i::Object** p, uint16_t class_id) {
+    Value* value = ToApi<Value>(i::Handle<i::Object>(p));
+    visitor_->VisitPersistentHandle(
+        reinterpret_cast<Persistent<Value>*>(&value), class_id);
+  }
+ private:
+  PersistentHandleVisitor* visitor_;
+};
+
+
+void v8::V8::VisitHandlesWithClassIds(PersistentHandleVisitor* visitor) {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::V8::VisitHandlesWithClassId");
+
+  i::DisallowHeapAllocation no_allocation;
+
+  VisitorAdapter visitor_adapter(visitor);
+  isolate->global_handles()->IterateAllRootsWithClassIds(&visitor_adapter);
+}
+
+
+void v8::V8::VisitHandlesForPartialDependence(
+    Isolate* exported_isolate, PersistentHandleVisitor* visitor) {
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(exported_isolate);
+  ASSERT(isolate == i::Isolate::Current());
+  IsDeadCheck(isolate, "v8::V8::VisitHandlesForPartialDependence");
+
+  i::DisallowHeapAllocation no_allocation;
+
+  VisitorAdapter visitor_adapter(visitor);
+  isolate->global_handles()->IterateAllRootsInNewSpaceWithClassIds(
+      &visitor_adapter);
+}
+
+
+bool v8::V8::IdleNotification(int hint) {
+  // Returning true tells the caller that it need not
+  // continue to call IdleNotification.
+  i::Isolate* isolate = i::Isolate::Current();
+  if (isolate == NULL || !isolate->IsInitialized()) return true;
+  return i::V8::IdleNotification(hint);
+}
+
+
+void v8::V8::LowMemoryNotification() {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (isolate == NULL || !isolate->IsInitialized()) return;
+  isolate->heap()->CollectAllAvailableGarbage("low memory notification");
+}
+
+
+int v8::V8::ContextDisposedNotification() {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (!isolate->IsInitialized()) return 0;
+  return isolate->heap()->NotifyContextDisposed();
+}
+
+
+bool v8::V8::InitializeICU() {
+  return i::InitializeICU();
+}
+
+
+const char* v8::V8::GetVersion() {
+  return i::Version::GetVersion();
+}
+
+
+static i::Handle<i::FunctionTemplateInfo>
+    EnsureConstructor(i::Handle<i::ObjectTemplateInfo> templ) {
+  if (templ->constructor()->IsUndefined()) {
+    Local<FunctionTemplate> constructor = FunctionTemplate::New();
+    Utils::OpenHandle(*constructor)->set_instance_template(*templ);
+    templ->set_constructor(*Utils::OpenHandle(*constructor));
+  }
+  return i::Handle<i::FunctionTemplateInfo>(
+    i::FunctionTemplateInfo::cast(templ->constructor()));
+}
+
+
+static i::Handle<i::Context> CreateEnvironment(
+    i::Isolate* isolate,
+    v8::ExtensionConfiguration* extensions,
+    v8::Handle<ObjectTemplate> global_template,
+    v8::Handle<Value> global_object) {
+  i::Handle<i::Context> env;
+
+  // Enter V8 via an ENTER_V8 scope.
+  {
+    ENTER_V8(isolate);
+    v8::Handle<ObjectTemplate> proxy_template = global_template;
+    i::Handle<i::FunctionTemplateInfo> proxy_constructor;
+    i::Handle<i::FunctionTemplateInfo> global_constructor;
+
+    if (!global_template.IsEmpty()) {
+      // Make sure that the global_template has a constructor.
+      global_constructor =
+          EnsureConstructor(Utils::OpenHandle(*global_template));
+
+      // Create a fresh template for the global proxy object.
+      proxy_template = ObjectTemplate::New();
+      proxy_constructor =
+          EnsureConstructor(Utils::OpenHandle(*proxy_template));
+
+      // Set the global template to be the prototype template of
+      // global proxy template.
+      proxy_constructor->set_prototype_template(
+          *Utils::OpenHandle(*global_template));
+
+      // Migrate security handlers from global_template to
+      // proxy_template.  Temporarily removing access check
+      // information from the global template.
+      if (!global_constructor->access_check_info()->IsUndefined()) {
+        proxy_constructor->set_access_check_info(
+            global_constructor->access_check_info());
+        proxy_constructor->set_needs_access_check(
+            global_constructor->needs_access_check());
+        global_constructor->set_needs_access_check(false);
+        global_constructor->set_access_check_info(
+            isolate->heap()->undefined_value());
+      }
+    }
+
+    // Create the environment.
+    env = isolate->bootstrapper()->CreateEnvironment(
+        Utils::OpenHandle(*global_object, true),
+        proxy_template,
+        extensions);
+
+    // Restore the access check info on the global template.
+    if (!global_template.IsEmpty()) {
+      ASSERT(!global_constructor.is_null());
+      ASSERT(!proxy_constructor.is_null());
+      global_constructor->set_access_check_info(
+          proxy_constructor->access_check_info());
+      global_constructor->set_needs_access_check(
+          proxy_constructor->needs_access_check());
+    }
+    isolate->runtime_profiler()->Reset();
+  }
+  // Leave V8.
+
+  return env;
+}
+
+#ifdef V8_USE_UNSAFE_HANDLES
+Persistent<Context> v8::Context::New(
+    v8::ExtensionConfiguration* extensions,
+    v8::Handle<ObjectTemplate> global_template,
+    v8::Handle<Value> global_object) {
+  i::Isolate::EnsureDefaultIsolate();
+  i::Isolate* isolate = i::Isolate::Current();
+  Isolate* external_isolate = reinterpret_cast<Isolate*>(isolate);
+  EnsureInitializedForIsolate(isolate, "v8::Context::New()");
+  LOG_API(isolate, "Context::New");
+  ON_BAILOUT(isolate, "v8::Context::New()", return Persistent<Context>());
+  i::HandleScope scope(isolate);
+  i::Handle<i::Context> env =
+      CreateEnvironment(isolate, extensions, global_template, global_object);
+  if (env.is_null()) return Persistent<Context>();
+  return Persistent<Context>::New(external_isolate, Utils::ToLocal(env));
+}
+#endif
+
+
+Local<Context> v8::Context::New(
+    v8::Isolate* external_isolate,
+    v8::ExtensionConfiguration* extensions,
+    v8::Handle<ObjectTemplate> global_template,
+    v8::Handle<Value> global_object) {
+  i::Isolate::EnsureDefaultIsolate();
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(external_isolate);
+  EnsureInitializedForIsolate(isolate, "v8::Context::New()");
+  LOG_API(isolate, "Context::New");
+  ON_BAILOUT(isolate, "v8::Context::New()", return Local<Context>());
+  i::HandleScope scope(isolate);
+  i::Handle<i::Context> env =
+      CreateEnvironment(isolate, extensions, global_template, global_object);
+  if (env.is_null()) return Local<Context>();
+  return Utils::ToLocal(scope.CloseAndEscape(env));
+}
+
+
+void v8::Context::SetSecurityToken(Handle<Value> token) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::Context::SetSecurityToken()")) {
+    return;
+  }
+  ENTER_V8(isolate);
+  i::Handle<i::Context> env = Utils::OpenHandle(this);
+  i::Handle<i::Object> token_handle = Utils::OpenHandle(*token);
+  env->set_security_token(*token_handle);
+}
+
+
+void v8::Context::UseDefaultSecurityToken() {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate,
+                  "v8::Context::UseDefaultSecurityToken()")) {
+    return;
+  }
+  ENTER_V8(isolate);
+  i::Handle<i::Context> env = Utils::OpenHandle(this);
+  env->set_security_token(env->global_object());
+}
+
+
+Handle<Value> v8::Context::GetSecurityToken() {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::Context::GetSecurityToken()")) {
+    return Handle<Value>();
+  }
+  i::Handle<i::Context> env = Utils::OpenHandle(this);
+  i::Object* security_token = env->security_token();
+  i::Handle<i::Object> token_handle(security_token, isolate);
+  return Utils::ToLocal(token_handle);
+}
+
+
+bool Context::HasOutOfMemoryException() {
+  i::Handle<i::Context> env = Utils::OpenHandle(this);
+  return env->has_out_of_memory();
+}
+
+
+bool Context::InContext() {
+  return i::Isolate::Current()->context() != NULL;
+}
+
+
+v8::Isolate* Context::GetIsolate() {
+  i::Handle<i::Context> env = Utils::OpenHandle(this);
+  return reinterpret_cast<Isolate*>(env->GetIsolate());
+}
+
+
+v8::Local<v8::Context> Context::GetEntered() {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (!EnsureInitializedForIsolate(isolate, "v8::Context::GetEntered()")) {
+    return Local<Context>();
+  }
+  i::Handle<i::Object> last =
+      isolate->handle_scope_implementer()->LastEnteredContext();
+  if (last.is_null()) return Local<Context>();
+  i::Handle<i::Context> context = i::Handle<i::Context>::cast(last);
+  return Utils::ToLocal(context);
+}
+
+
+v8::Local<v8::Context> Context::GetCurrent() {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::Context::GetCurrent()")) {
+    return Local<Context>();
+  }
+  return reinterpret_cast<Isolate*>(isolate)->GetCurrentContext();
+}
+
+
+v8::Local<v8::Context> Context::GetCalling() {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::Context::GetCalling()")) {
+    return Local<Context>();
+  }
+  i::Handle<i::Object> calling =
+      isolate->GetCallingNativeContext();
+  if (calling.is_null()) return Local<Context>();
+  i::Handle<i::Context> context = i::Handle<i::Context>::cast(calling);
+  return Utils::ToLocal(context);
+}
+
+
+v8::Local<v8::Object> Context::Global() {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::Context::Global()")) {
+    return Local<v8::Object>();
+  }
+  i::Object** ctx = reinterpret_cast<i::Object**>(this);
+  i::Handle<i::Context> context =
+      i::Handle<i::Context>::cast(i::Handle<i::Object>(ctx));
+  i::Handle<i::Object> global(context->global_proxy(), isolate);
+  return Utils::ToLocal(i::Handle<i::JSObject>::cast(global));
+}
+
+
+void Context::DetachGlobal() {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::Context::DetachGlobal()")) return;
+  ENTER_V8(isolate);
+  i::Object** ctx = reinterpret_cast<i::Object**>(this);
+  i::Handle<i::Context> context =
+      i::Handle<i::Context>::cast(i::Handle<i::Object>(ctx));
+  isolate->bootstrapper()->DetachGlobal(context);
+}
+
+
+void Context::ReattachGlobal(Handle<Object> global_object) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::Context::ReattachGlobal()")) return;
+  ENTER_V8(isolate);
+  i::Object** ctx = reinterpret_cast<i::Object**>(this);
+  i::Handle<i::Context> context =
+      i::Handle<i::Context>::cast(i::Handle<i::Object>(ctx));
+  i::Handle<i::JSGlobalProxy> global_proxy =
+      i::Handle<i::JSGlobalProxy>::cast(Utils::OpenHandle(*global_object));
+  isolate->bootstrapper()->ReattachGlobal(context, global_proxy);
+}
+
+
+void Context::AllowCodeGenerationFromStrings(bool allow) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::Context::AllowCodeGenerationFromStrings()")) {
+    return;
+  }
+  ENTER_V8(isolate);
+  i::Object** ctx = reinterpret_cast<i::Object**>(this);
+  i::Handle<i::Context> context =
+      i::Handle<i::Context>::cast(i::Handle<i::Object>(ctx));
+  context->set_allow_code_gen_from_strings(
+      allow ? isolate->heap()->true_value() : isolate->heap()->false_value());
+}
+
+
+bool Context::IsCodeGenerationFromStringsAllowed() {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate,
+                  "v8::Context::IsCodeGenerationFromStringsAllowed()")) {
+    return false;
+  }
+  ENTER_V8(isolate);
+  i::Object** ctx = reinterpret_cast<i::Object**>(this);
+  i::Handle<i::Context> context =
+      i::Handle<i::Context>::cast(i::Handle<i::Object>(ctx));
+  return !context->allow_code_gen_from_strings()->IsFalse();
+}
+
+
+void Context::SetErrorMessageForCodeGenerationFromStrings(
+    Handle<String> error) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate,
+      "v8::Context::SetErrorMessageForCodeGenerationFromStrings()")) {
+    return;
+  }
+  ENTER_V8(isolate);
+  i::Object** ctx = reinterpret_cast<i::Object**>(this);
+  i::Handle<i::Context> context =
+      i::Handle<i::Context>::cast(i::Handle<i::Object>(ctx));
+  i::Handle<i::String> error_handle = Utils::OpenHandle(*error);
+  context->set_error_message_for_code_gen_from_strings(*error_handle);
+}
+
+
+Local<v8::Object> ObjectTemplate::NewInstance() {
+  i::Isolate* isolate = i::Isolate::Current();
+  ON_BAILOUT(isolate, "v8::ObjectTemplate::NewInstance()",
+             return Local<v8::Object>());
+  LOG_API(isolate, "ObjectTemplate::NewInstance");
+  ENTER_V8(isolate);
+  EXCEPTION_PREAMBLE(isolate);
+  i::Handle<i::Object> obj =
+      i::Execution::InstantiateObject(Utils::OpenHandle(this),
+                                      &has_pending_exception);
+  EXCEPTION_BAILOUT_CHECK(isolate, Local<v8::Object>());
+  return Utils::ToLocal(i::Handle<i::JSObject>::cast(obj));
+}
+
+
+Local<v8::Function> FunctionTemplate::GetFunction() {
+  i::Isolate* isolate = i::Isolate::Current();
+  ON_BAILOUT(isolate, "v8::FunctionTemplate::GetFunction()",
+             return Local<v8::Function>());
+  LOG_API(isolate, "FunctionTemplate::GetFunction");
+  ENTER_V8(isolate);
+  EXCEPTION_PREAMBLE(isolate);
+  i::Handle<i::Object> obj =
+      i::Execution::InstantiateFunction(Utils::OpenHandle(this),
+                                        &has_pending_exception);
+  EXCEPTION_BAILOUT_CHECK(isolate, Local<v8::Function>());
+  return Utils::ToLocal(i::Handle<i::JSFunction>::cast(obj));
+}
+
+
+bool FunctionTemplate::HasInstance(v8::Handle<v8::Value> value) {
+  ON_BAILOUT(i::Isolate::Current(), "v8::FunctionTemplate::HasInstanceOf()",
+             return false);
+  i::Object* obj = *Utils::OpenHandle(*value);
+  return obj->IsInstanceOf(*Utils::OpenHandle(this));
+}
+
+
+Local<External> v8::External::New(void* value) {
+  STATIC_ASSERT(sizeof(value) == sizeof(i::Address));
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate, "v8::External::New()");
+  LOG_API(isolate, "External::New");
+  ENTER_V8(isolate);
+  i::Handle<i::JSObject> external = isolate->factory()->NewExternal(value);
+  return Utils::ExternalToLocal(external);
+}
+
+
+void* External::Value() const {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::External::Value()")) return NULL;
+  return ExternalValue(*Utils::OpenHandle(this));
+}
+
+
+Local<String> v8::String::Empty() {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (!EnsureInitializedForIsolate(isolate, "v8::String::Empty()")) {
+    return v8::Local<String>();
+  }
+  LOG_API(isolate, "String::Empty()");
+  return Utils::ToLocal(isolate->factory()->empty_string());
+}
+
+
+// anonymous namespace for string creation helper functions
+namespace {
+
+inline int StringLength(const char* string) {
+  return i::StrLength(string);
+}
+
+
+inline int StringLength(const uint8_t* string) {
+  return i::StrLength(reinterpret_cast<const char*>(string));
+}
+
+
+inline int StringLength(const uint16_t* string) {
+  int length = 0;
+  while (string[length] != '\0')
+    length++;
+  return length;
+}
+
+
+inline i::Handle<i::String> NewString(i::Factory* factory,
+                                      String::NewStringType type,
+                                      i::Vector<const char> string) {
+  if (type ==String::kInternalizedString) {
+    return factory->InternalizeUtf8String(string);
+  }
+  return factory->NewStringFromUtf8(string);
+}
+
+
+inline i::Handle<i::String> NewString(i::Factory* factory,
+                                      String::NewStringType type,
+                                      i::Vector<const uint8_t> string) {
+  if (type == String::kInternalizedString) {
+    return factory->InternalizeOneByteString(string);
+  }
+  return factory->NewStringFromOneByte(string);
+}
+
+
+inline i::Handle<i::String> NewString(i::Factory* factory,
+                                      String::NewStringType type,
+                                      i::Vector<const uint16_t> string) {
+  if (type == String::kInternalizedString) {
+    return factory->InternalizeTwoByteString(string);
+  }
+  return factory->NewStringFromTwoByte(string);
+}
+
+
+template<typename Char>
+inline Local<String> NewString(Isolate* v8_isolate,
+                               const char* location,
+                               const char* env,
+                               const Char* data,
+                               String::NewStringType type,
+                               int length) {
+  i::Isolate* isolate = reinterpret_cast<internal::Isolate*>(v8_isolate);
+  EnsureInitializedForIsolate(isolate, location);
+  LOG_API(isolate, env);
+  if (length == 0 && type != String::kUndetectableString) {
+    return String::Empty();
+  }
+  ENTER_V8(isolate);
+  if (length == -1) length = StringLength(data);
+  i::Handle<i::String> result = NewString(
+      isolate->factory(), type, i::Vector<const Char>(data, length));
+  if (type == String::kUndetectableString) {
+    result->MarkAsUndetectable();
+  }
+  return Utils::ToLocal(result);
+}
+
+}  // anonymous namespace
+
+
+Local<String> String::NewFromUtf8(Isolate* isolate,
+                                  const char* data,
+                                  NewStringType type,
+                                  int length) {
+  return NewString(isolate,
+                   "v8::String::NewFromUtf8()",
+                   "String::NewFromUtf8",
+                   data,
+                   type,
+                   length);
+}
+
+
+Local<String> String::NewFromOneByte(Isolate* isolate,
+                                     const uint8_t* data,
+                                     NewStringType type,
+                                     int length) {
+  return NewString(isolate,
+                   "v8::String::NewFromOneByte()",
+                   "String::NewFromOneByte",
+                   data,
+                   type,
+                   length);
+}
+
+
+Local<String> String::NewFromTwoByte(Isolate* isolate,
+                                     const uint16_t* data,
+                                     NewStringType type,
+                                     int length) {
+  return NewString(isolate,
+                   "v8::String::NewFromTwoByte()",
+                   "String::NewFromTwoByte",
+                   data,
+                   type,
+                   length);
+}
+
+
+Local<String> v8::String::Concat(Handle<String> left, Handle<String> right) {
+  i::Handle<i::String> left_string = Utils::OpenHandle(*left);
+  i::Isolate* isolate = left_string->GetIsolate();
+  EnsureInitializedForIsolate(isolate, "v8::String::New()");
+  LOG_API(isolate, "String::New(char)");
+  ENTER_V8(isolate);
+  i::Handle<i::String> right_string = Utils::OpenHandle(*right);
+  i::Handle<i::String> result = isolate->factory()->NewConsString(left_string,
+                                                                  right_string);
+  return Utils::ToLocal(result);
+}
+
+
+i::Handle<i::String> NewExternalStringHandle(i::Isolate* isolate,
+      v8::String::ExternalStringResource* resource) {
+  i::Handle<i::String> result =
+      isolate->factory()->NewExternalStringFromTwoByte(resource);
+  return result;
+}
+
+
+i::Handle<i::String> NewExternalAsciiStringHandle(i::Isolate* isolate,
+      v8::String::ExternalAsciiStringResource* resource) {
+  i::Handle<i::String> result =
+      isolate->factory()->NewExternalStringFromAscii(resource);
+  return result;
+}
+
+
+bool RedirectToExternalString(i::Isolate* isolate,
+                              i::Handle<i::String> parent,
+                              i::Handle<i::String> external) {
+  if (parent->IsConsString()) {
+    i::Handle<i::ConsString> cons = i::Handle<i::ConsString>::cast(parent);
+    cons->set_first(*external);
+    cons->set_second(isolate->heap()->empty_string());
+  } else {
+    ASSERT(parent->IsSlicedString());
+    i::Handle<i::SlicedString> slice = i::Handle<i::SlicedString>::cast(parent);
+    slice->set_parent(*external);
+    slice->set_offset(0);
+  }
+  return true;
+}
+
+
+Local<String> v8::String::NewExternal(
+      v8::String::ExternalStringResource* resource) {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate, "v8::String::NewExternal()");
+  LOG_API(isolate, "String::NewExternal");
+  ENTER_V8(isolate);
+  CHECK(resource && resource->data());
+  i::Handle<i::String> result = NewExternalStringHandle(isolate, resource);
+  isolate->heap()->external_string_table()->AddString(*result);
+  return Utils::ToLocal(result);
+}
+
+
+bool v8::String::MakeExternal(v8::String::ExternalStringResource* resource) {
+  i::Handle<i::String> obj = Utils::OpenHandle(this);
+  i::Isolate* isolate = obj->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::String::MakeExternal()")) return false;
+  if (i::StringShape(*obj).IsExternalTwoByte()) {
+    return false;  // Already an external string.
+  }
+  ENTER_V8(isolate);
+  if (isolate->string_tracker()->IsFreshUnusedString(obj)) {
+    return false;
+  }
+  if (isolate->heap()->IsInGCPostProcessing()) {
+    return false;
+  }
+  CHECK(resource && resource->data());
+
+  bool result;
+  i::Handle<i::String> external;
+  if (isolate->heap()->old_pointer_space()->Contains(*obj)) {
+    // We do not allow external strings in the old pointer space.  Instead of
+    // converting the string in-place, we keep the cons/sliced string and
+    // point it to a newly-allocated external string.
+    external = NewExternalStringHandle(isolate, resource);
+    result = RedirectToExternalString(isolate, obj, external);
+  } else {
+    result = obj->MakeExternal(resource);
+    external = obj;
+  }
+
+  ASSERT(external->IsExternalString());
+  if (result && !external->IsInternalizedString()) {
+    isolate->heap()->external_string_table()->AddString(*external);
+  }
+  return result;
+}
+
+
+Local<String> v8::String::NewExternal(
+      v8::String::ExternalAsciiStringResource* resource) {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate, "v8::String::NewExternal()");
+  LOG_API(isolate, "String::NewExternal");
+  ENTER_V8(isolate);
+  CHECK(resource && resource->data());
+  i::Handle<i::String> result = NewExternalAsciiStringHandle(isolate, resource);
+  isolate->heap()->external_string_table()->AddString(*result);
+  return Utils::ToLocal(result);
+}
+
+
+bool v8::String::MakeExternal(
+    v8::String::ExternalAsciiStringResource* resource) {
+  i::Handle<i::String> obj = Utils::OpenHandle(this);
+  i::Isolate* isolate = obj->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::String::MakeExternal()")) return false;
+  if (i::StringShape(*obj).IsExternalTwoByte()) {
+    return false;  // Already an external string.
+  }
+  ENTER_V8(isolate);
+  if (isolate->string_tracker()->IsFreshUnusedString(obj)) {
+    return false;
+  }
+  if (isolate->heap()->IsInGCPostProcessing()) {
+    return false;
+  }
+  CHECK(resource && resource->data());
+
+  bool result;
+  i::Handle<i::String> external;
+  if (isolate->heap()->old_pointer_space()->Contains(*obj)) {
+    // We do not allow external strings in the old pointer space.  Instead of
+    // converting the string in-place, we keep the cons/sliced string and
+    // point it to a newly-allocated external string.
+    external = NewExternalAsciiStringHandle(isolate, resource);
+    result = RedirectToExternalString(isolate, obj, external);
+  } else {
+    result = obj->MakeExternal(resource);
+    external = obj;
+  }
+
+  ASSERT(external->IsExternalString());
+  if (result && !external->IsInternalizedString()) {
+    isolate->heap()->external_string_table()->AddString(*external);
+  }
+  return result;
+}
+
+
+bool v8::String::CanMakeExternal() {
+  if (!internal::FLAG_clever_optimizations) return false;
+  i::Handle<i::String> obj = Utils::OpenHandle(this);
+  i::Isolate* isolate = obj->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::String::CanMakeExternal()")) return false;
+  if (isolate->string_tracker()->IsFreshUnusedString(obj)) return false;
+  int size = obj->Size();  // Byte size of the original string.
+  if (size < i::ExternalString::kShortSize) return false;
+  i::StringShape shape(*obj);
+  return !shape.IsExternal();
+}
+
+
+Local<v8::Object> v8::Object::New() {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate, "v8::Object::New()");
+  LOG_API(isolate, "Object::New");
+  ENTER_V8(isolate);
+  i::Handle<i::JSObject> obj =
+      isolate->factory()->NewJSObject(isolate->object_function());
+  return Utils::ToLocal(obj);
+}
+
+
+Local<v8::Value> v8::NumberObject::New(double value) {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate, "v8::NumberObject::New()");
+  LOG_API(isolate, "NumberObject::New");
+  ENTER_V8(isolate);
+  i::Handle<i::Object> number = isolate->factory()->NewNumber(value);
+  i::Handle<i::Object> obj = isolate->factory()->ToObject(number);
+  return Utils::ToLocal(obj);
+}
+
+
+double v8::NumberObject::ValueOf() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::NumberObject::NumberValue()")) return 0;
+  LOG_API(isolate, "NumberObject::NumberValue");
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  i::Handle<i::JSValue> jsvalue = i::Handle<i::JSValue>::cast(obj);
+  return jsvalue->value()->Number();
+}
+
+
+Local<v8::Value> v8::BooleanObject::New(bool value) {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate, "v8::BooleanObject::New()");
+  LOG_API(isolate, "BooleanObject::New");
+  ENTER_V8(isolate);
+  i::Handle<i::Object> boolean(value
+                               ? isolate->heap()->true_value()
+                               : isolate->heap()->false_value(),
+                               isolate);
+  i::Handle<i::Object> obj = isolate->factory()->ToObject(boolean);
+  return Utils::ToLocal(obj);
+}
+
+
+bool v8::BooleanObject::ValueOf() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::BooleanObject::BooleanValue()")) return 0;
+  LOG_API(isolate, "BooleanObject::BooleanValue");
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  i::Handle<i::JSValue> jsvalue = i::Handle<i::JSValue>::cast(obj);
+  return jsvalue->value()->IsTrue();
+}
+
+
+Local<v8::Value> v8::StringObject::New(Handle<String> value) {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate, "v8::StringObject::New()");
+  LOG_API(isolate, "StringObject::New");
+  ENTER_V8(isolate);
+  i::Handle<i::Object> obj =
+      isolate->factory()->ToObject(Utils::OpenHandle(*value));
+  return Utils::ToLocal(obj);
+}
+
+
+Local<v8::String> v8::StringObject::ValueOf() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::StringObject::StringValue()")) {
+    return Local<v8::String>();
+  }
+  LOG_API(isolate, "StringObject::StringValue");
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  i::Handle<i::JSValue> jsvalue = i::Handle<i::JSValue>::cast(obj);
+  return Utils::ToLocal(
+      i::Handle<i::String>(i::String::cast(jsvalue->value())));
+}
+
+
+Local<v8::Value> v8::SymbolObject::New(Isolate* isolate, Handle<Symbol> value) {
+  i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
+  EnsureInitializedForIsolate(i_isolate, "v8::SymbolObject::New()");
+  LOG_API(i_isolate, "SymbolObject::New");
+  ENTER_V8(i_isolate);
+  i::Handle<i::Object> obj =
+      i_isolate->factory()->ToObject(Utils::OpenHandle(*value));
+  return Utils::ToLocal(obj);
+}
+
+
+Local<v8::Symbol> v8::SymbolObject::ValueOf() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::SymbolObject::SymbolValue()"))
+    return Local<v8::Symbol>();
+  LOG_API(isolate, "SymbolObject::SymbolValue");
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  i::Handle<i::JSValue> jsvalue = i::Handle<i::JSValue>::cast(obj);
+  return Utils::ToLocal(
+      i::Handle<i::Symbol>(i::Symbol::cast(jsvalue->value())));
+}
+
+
+Local<v8::Value> v8::Date::New(double time) {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate, "v8::Date::New()");
+  LOG_API(isolate, "Date::New");
+  if (std::isnan(time)) {
+    // Introduce only canonical NaN value into the VM, to avoid signaling NaNs.
+    time = i::OS::nan_value();
+  }
+  ENTER_V8(isolate);
+  EXCEPTION_PREAMBLE(isolate);
+  i::Handle<i::Object> obj =
+      i::Execution::NewDate(time, &has_pending_exception);
+  EXCEPTION_BAILOUT_CHECK(isolate, Local<v8::Value>());
+  return Utils::ToLocal(obj);
+}
+
+
+double v8::Date::ValueOf() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::Date::NumberValue()")) return 0;
+  LOG_API(isolate, "Date::NumberValue");
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  i::Handle<i::JSDate> jsdate = i::Handle<i::JSDate>::cast(obj);
+  return jsdate->value()->Number();
+}
+
+
+void v8::Date::DateTimeConfigurationChangeNotification() {
+  i::Isolate* isolate = i::Isolate::Current();
+  ON_BAILOUT(isolate, "v8::Date::DateTimeConfigurationChangeNotification()",
+             return);
+  LOG_API(isolate, "Date::DateTimeConfigurationChangeNotification");
+  ENTER_V8(isolate);
+
+  isolate->date_cache()->ResetDateCache();
+
+  i::HandleScope scope(isolate);
+  // Get the function ResetDateCache (defined in date.js).
+  i::Handle<i::String> func_name_str =
+      isolate->factory()->InternalizeOneByteString(
+          STATIC_ASCII_VECTOR("ResetDateCache"));
+  i::MaybeObject* result =
+      isolate->js_builtins_object()->GetProperty(*func_name_str);
+  i::Object* object_func;
+  if (!result->ToObject(&object_func)) {
+    return;
+  }
+
+  if (object_func->IsJSFunction()) {
+    i::Handle<i::JSFunction> func =
+        i::Handle<i::JSFunction>(i::JSFunction::cast(object_func));
+
+    // Call ResetDateCache(0 but expect no exceptions:
+    bool caught_exception = false;
+    i::Execution::TryCall(func,
+                          isolate->js_builtins_object(),
+                          0,
+                          NULL,
+                          &caught_exception);
+  }
+}
+
+
+static i::Handle<i::String> RegExpFlagsToString(RegExp::Flags flags) {
+  i::Isolate* isolate = i::Isolate::Current();
+  uint8_t flags_buf[3];
+  int num_flags = 0;
+  if ((flags & RegExp::kGlobal) != 0) flags_buf[num_flags++] = 'g';
+  if ((flags & RegExp::kMultiline) != 0) flags_buf[num_flags++] = 'm';
+  if ((flags & RegExp::kIgnoreCase) != 0) flags_buf[num_flags++] = 'i';
+  ASSERT(num_flags <= static_cast<int>(ARRAY_SIZE(flags_buf)));
+  return isolate->factory()->InternalizeOneByteString(
+      i::Vector<const uint8_t>(flags_buf, num_flags));
+}
+
+
+Local<v8::RegExp> v8::RegExp::New(Handle<String> pattern,
+                                  Flags flags) {
+  i::Isolate* isolate = Utils::OpenHandle(*pattern)->GetIsolate();
+  EnsureInitializedForIsolate(isolate, "v8::RegExp::New()");
+  LOG_API(isolate, "RegExp::New");
+  ENTER_V8(isolate);
+  EXCEPTION_PREAMBLE(isolate);
+  i::Handle<i::JSRegExp> obj = i::Execution::NewJSRegExp(
+      Utils::OpenHandle(*pattern),
+      RegExpFlagsToString(flags),
+      &has_pending_exception);
+  EXCEPTION_BAILOUT_CHECK(isolate, Local<v8::RegExp>());
+  return Utils::ToLocal(i::Handle<i::JSRegExp>::cast(obj));
+}
+
+
+Local<v8::String> v8::RegExp::GetSource() const {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::RegExp::GetSource()")) {
+    return Local<v8::String>();
+  }
+  i::Handle<i::JSRegExp> obj = Utils::OpenHandle(this);
+  return Utils::ToLocal(i::Handle<i::String>(obj->Pattern()));
+}
+
+
+// Assert that the static flags cast in GetFlags is valid.
+#define REGEXP_FLAG_ASSERT_EQ(api_flag, internal_flag)        \
+  STATIC_ASSERT(static_cast<int>(v8::RegExp::api_flag) ==     \
+                static_cast<int>(i::JSRegExp::internal_flag))
+REGEXP_FLAG_ASSERT_EQ(kNone, NONE);
+REGEXP_FLAG_ASSERT_EQ(kGlobal, GLOBAL);
+REGEXP_FLAG_ASSERT_EQ(kIgnoreCase, IGNORE_CASE);
+REGEXP_FLAG_ASSERT_EQ(kMultiline, MULTILINE);
+#undef REGEXP_FLAG_ASSERT_EQ
+
+v8::RegExp::Flags v8::RegExp::GetFlags() const {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::RegExp::GetFlags()")) {
+    return v8::RegExp::kNone;
+  }
+  i::Handle<i::JSRegExp> obj = Utils::OpenHandle(this);
+  return static_cast<RegExp::Flags>(obj->GetFlags().value());
+}
+
+
+Local<v8::Array> v8::Array::New(int length) {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate, "v8::Array::New()");
+  LOG_API(isolate, "Array::New");
+  ENTER_V8(isolate);
+  int real_length = length > 0 ? length : 0;
+  i::Handle<i::JSArray> obj = isolate->factory()->NewJSArray(real_length);
+  i::Handle<i::Object> length_obj =
+      isolate->factory()->NewNumberFromInt(real_length);
+  obj->set_length(*length_obj);
+  return Utils::ToLocal(obj);
+}
+
+
+uint32_t v8::Array::Length() const {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::Array::Length()")) return 0;
+  i::Handle<i::JSArray> obj = Utils::OpenHandle(this);
+  i::Object* length = obj->length();
+  if (length->IsSmi()) {
+    return i::Smi::cast(length)->value();
+  } else {
+    return static_cast<uint32_t>(length->Number());
+  }
+}
+
+
+Local<Object> Array::CloneElementAt(uint32_t index) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Array::CloneElementAt()", return Local<Object>());
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  if (!self->HasFastObjectElements()) {
+    return Local<Object>();
+  }
+  i::FixedArray* elms = i::FixedArray::cast(self->elements());
+  i::Object* paragon = elms->get(index);
+  if (!paragon->IsJSObject()) {
+    return Local<Object>();
+  }
+  i::Handle<i::JSObject> paragon_handle(i::JSObject::cast(paragon));
+  EXCEPTION_PREAMBLE(isolate);
+  ENTER_V8(isolate);
+  i::Handle<i::JSObject> result = i::Copy(paragon_handle);
+  has_pending_exception = result.is_null();
+  EXCEPTION_BAILOUT_CHECK(isolate, Local<Object>());
+  return Utils::ToLocal(result);
+}
+
+
+bool v8::ArrayBuffer::IsExternal() const {
+  return Utils::OpenHandle(this)->is_external();
+}
+
+
+v8::ArrayBuffer::Contents v8::ArrayBuffer::Externalize() {
+  i::Handle<i::JSArrayBuffer> obj = Utils::OpenHandle(this);
+  ApiCheck(!obj->is_external(),
+            "v8::ArrayBuffer::Externalize",
+            "ArrayBuffer already externalized");
+  obj->set_is_external(true);
+  size_t byte_length = static_cast<size_t>(obj->byte_length()->Number());
+  Contents contents;
+  contents.data_ = obj->backing_store();
+  contents.byte_length_ = byte_length;
+  return contents;
+}
+
+
+void v8::ArrayBuffer::Neuter() {
+  i::Handle<i::JSArrayBuffer> obj = Utils::OpenHandle(this);
+  i::Isolate* isolate = obj->GetIsolate();
+  ApiCheck(obj->is_external(),
+           "v8::ArrayBuffer::Neuter",
+           "Only externalized ArrayBuffers can be neutered");
+  LOG_API(obj->GetIsolate(), "v8::ArrayBuffer::Neuter()");
+  ENTER_V8(isolate);
+
+  for (i::Handle<i::Object> view_obj(obj->weak_first_view(), isolate);
+       !view_obj->IsUndefined();) {
+    i::Handle<i::JSArrayBufferView> view(i::JSArrayBufferView::cast(*view_obj));
+    if (view->IsJSTypedArray()) {
+      i::JSTypedArray::cast(*view)->Neuter();
+    } else if (view->IsJSDataView()) {
+      i::JSDataView::cast(*view)->Neuter();
+    } else {
+      UNREACHABLE();
+    }
+    view_obj = i::handle(view->weak_next(), isolate);
+  }
+  obj->Neuter();
+}
+
+
+size_t v8::ArrayBuffer::ByteLength() const {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::ArrayBuffer::ByteLength()")) return 0;
+  i::Handle<i::JSArrayBuffer> obj = Utils::OpenHandle(this);
+  return static_cast<size_t>(obj->byte_length()->Number());
+}
+
+
+Local<ArrayBuffer> v8::ArrayBuffer::New(size_t byte_length) {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate, "v8::ArrayBuffer::New(size_t)");
+  LOG_API(isolate, "v8::ArrayBuffer::New(size_t)");
+  ENTER_V8(isolate);
+  i::Handle<i::JSArrayBuffer> obj =
+      isolate->factory()->NewJSArrayBuffer();
+  i::Runtime::SetupArrayBufferAllocatingData(isolate, obj, byte_length);
+  return Utils::ToLocal(obj);
+}
+
+
+Local<ArrayBuffer> v8::ArrayBuffer::New(void* data, size_t byte_length) {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate, "v8::ArrayBuffer::New(void*, size_t)");
+  LOG_API(isolate, "v8::ArrayBuffer::New(void*, size_t)");
+  ENTER_V8(isolate);
+  i::Handle<i::JSArrayBuffer> obj =
+      isolate->factory()->NewJSArrayBuffer();
+  i::Runtime::SetupArrayBuffer(isolate, obj, true, data, byte_length);
+  return Utils::ToLocal(obj);
+}
+
+
+Local<ArrayBuffer> v8::ArrayBufferView::Buffer() {
+  i::Handle<i::JSArrayBufferView> obj = Utils::OpenHandle(this);
+  ASSERT(obj->buffer()->IsJSArrayBuffer());
+  i::Handle<i::JSArrayBuffer> buffer(i::JSArrayBuffer::cast(obj->buffer()));
+  return Utils::ToLocal(buffer);
+}
+
+
+size_t v8::ArrayBufferView::ByteOffset() {
+  i::Handle<i::JSArrayBufferView> obj = Utils::OpenHandle(this);
+  return static_cast<size_t>(obj->byte_offset()->Number());
+}
+
+
+size_t v8::ArrayBufferView::ByteLength() {
+  i::Handle<i::JSArrayBufferView> obj = Utils::OpenHandle(this);
+  return static_cast<size_t>(obj->byte_length()->Number());
+}
+
+
+void* v8::ArrayBufferView::BaseAddress() {
+  i::Handle<i::JSArrayBufferView> obj = Utils::OpenHandle(this);
+  i::Handle<i::JSArrayBuffer> buffer(i::JSArrayBuffer::cast(obj->buffer()));
+  void* buffer_data = buffer->backing_store();
+  size_t byte_offset = static_cast<size_t>(obj->byte_offset()->Number());
+  return static_cast<uint8_t*>(buffer_data) + byte_offset;
+}
+
+
+size_t v8::TypedArray::Length() {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  if (IsDeadCheck(isolate, "v8::TypedArray::Length()")) return 0;
+  i::Handle<i::JSTypedArray> obj = Utils::OpenHandle(this);
+  return static_cast<size_t>(obj->length()->Number());
+}
+
+
+static inline void SetupArrayBufferView(
+    i::Isolate* isolate,
+    i::Handle<i::JSArrayBufferView> obj,
+    i::Handle<i::JSArrayBuffer> buffer,
+    size_t byte_offset,
+    size_t byte_length) {
+  ASSERT(byte_offset + byte_length <=
+      static_cast<size_t>(buffer->byte_length()->Number()));
+
+  obj->set_buffer(*buffer);
+
+  obj->set_weak_next(buffer->weak_first_view());
+  buffer->set_weak_first_view(*obj);
+
+  i::Handle<i::Object> byte_offset_object =
+    isolate->factory()->NewNumberFromSize(byte_offset);
+  obj->set_byte_offset(*byte_offset_object);
+
+  i::Handle<i::Object> byte_length_object =
+    isolate->factory()->NewNumberFromSize(byte_length);
+  obj->set_byte_length(*byte_length_object);
+}
+
+template<typename ElementType,
+         ExternalArrayType array_type,
+         i::ElementsKind elements_kind>
+i::Handle<i::JSTypedArray> NewTypedArray(
+    i::Isolate* isolate,
+    Handle<ArrayBuffer> array_buffer, size_t byte_offset, size_t length) {
+  i::Handle<i::JSTypedArray> obj =
+      isolate->factory()->NewJSTypedArray(array_type);
+  i::Handle<i::JSArrayBuffer> buffer = Utils::OpenHandle(*array_buffer);
+
+  ASSERT(byte_offset % sizeof(ElementType) == 0);
+
+  SetupArrayBufferView(
+      isolate, obj, buffer, byte_offset, length * sizeof(ElementType));
+
+  i::Handle<i::Object> length_object =
+    isolate->factory()->NewNumberFromSize(length);
+  obj->set_length(*length_object);
+
+  i::Handle<i::ExternalArray> elements =
+      isolate->factory()->NewExternalArray(
+          static_cast<int>(length), array_type,
+          static_cast<uint8_t*>(buffer->backing_store()) + byte_offset);
+  obj->set_elements(*elements);
+  return obj;
+}
+
+
+#define TYPED_ARRAY_NEW(TypedArray, element_type, array_type, elements_kind) \
+  Local<TypedArray> TypedArray::New(Handle<ArrayBuffer> array_buffer,        \
+                                    size_t byte_offset, size_t length) {     \
+    i::Isolate* isolate = i::Isolate::Current();                             \
+    EnsureInitializedForIsolate(isolate,                                     \
+        "v8::" #TypedArray "::New(Handle<ArrayBuffer>, size_t, size_t)");    \
+    LOG_API(isolate,                                                         \
+        "v8::" #TypedArray "::New(Handle<ArrayBuffer>, size_t, size_t)");    \
+    ENTER_V8(isolate);                                                       \
+    i::Handle<i::JSTypedArray> obj =                                         \
+        NewTypedArray<element_type, array_type, elements_kind>(              \
+            isolate, array_buffer, byte_offset, length);                     \
+    return Utils::ToLocal##TypedArray(obj);                                  \
+  }
+
+
+TYPED_ARRAY_NEW(Uint8Array, uint8_t, kExternalUnsignedByteArray,
+                i::EXTERNAL_UNSIGNED_BYTE_ELEMENTS)
+TYPED_ARRAY_NEW(Uint8ClampedArray, uint8_t, kExternalPixelArray,
+                i::EXTERNAL_PIXEL_ELEMENTS)
+TYPED_ARRAY_NEW(Int8Array, int8_t, kExternalByteArray,
+                i::EXTERNAL_BYTE_ELEMENTS)
+TYPED_ARRAY_NEW(Uint16Array, uint16_t, kExternalUnsignedShortArray,
+                i::EXTERNAL_UNSIGNED_SHORT_ELEMENTS)
+TYPED_ARRAY_NEW(Int16Array, int16_t, kExternalShortArray,
+                i::EXTERNAL_SHORT_ELEMENTS)
+TYPED_ARRAY_NEW(Uint32Array, uint32_t, kExternalUnsignedIntArray,
+                i::EXTERNAL_UNSIGNED_INT_ELEMENTS)
+TYPED_ARRAY_NEW(Int32Array, int32_t, kExternalIntArray,
+                i::EXTERNAL_INT_ELEMENTS)
+TYPED_ARRAY_NEW(Float32Array, float, kExternalFloatArray,
+                i::EXTERNAL_FLOAT_ELEMENTS)
+TYPED_ARRAY_NEW(Float64Array, double, kExternalDoubleArray,
+                i::EXTERNAL_DOUBLE_ELEMENTS)
+
+#undef TYPED_ARRAY_NEW
+
+Local<DataView> DataView::New(Handle<ArrayBuffer> array_buffer,
+                              size_t byte_offset, size_t byte_length) {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(
+      isolate, "v8::DataView::New(void*, size_t, size_t)");
+  LOG_API(isolate, "v8::DataView::New(void*, size_t, size_t)");
+  ENTER_V8(isolate);
+  i::Handle<i::JSDataView> obj = isolate->factory()->NewJSDataView();
+  i::Handle<i::JSArrayBuffer> buffer = Utils::OpenHandle(*array_buffer);
+  SetupArrayBufferView(
+      isolate, obj, buffer, byte_offset, byte_length);
+  return Utils::ToLocal(obj);
+}
+
+
+Local<Symbol> v8::Symbol::New(Isolate* isolate) {
+  i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
+  EnsureInitializedForIsolate(i_isolate, "v8::Symbol::New()");
+  LOG_API(i_isolate, "Symbol::New()");
+  ENTER_V8(i_isolate);
+  i::Handle<i::Symbol> result = i_isolate->factory()->NewSymbol();
+  return Utils::ToLocal(result);
+}
+
+
+Local<Symbol> v8::Symbol::New(Isolate* isolate, const char* data, int length) {
+  i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
+  EnsureInitializedForIsolate(i_isolate, "v8::Symbol::New()");
+  LOG_API(i_isolate, "Symbol::New(char)");
+  ENTER_V8(i_isolate);
+  if (length == -1) length = i::StrLength(data);
+  i::Handle<i::String> name = i_isolate->factory()->NewStringFromUtf8(
+      i::Vector<const char>(data, length));
+  i::Handle<i::Symbol> result = i_isolate->factory()->NewSymbol();
+  result->set_name(*name);
+  return Utils::ToLocal(result);
+}
+
+
+Local<Number> v8::Number::New(double value) {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate, "v8::Number::New()");
+  return Number::New(reinterpret_cast<Isolate*>(isolate), value);
+}
+
+
+Local<Number> v8::Number::New(Isolate* isolate, double value) {
+  i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
+  ASSERT(internal_isolate->IsInitialized());
+  if (std::isnan(value)) {
+    // Introduce only canonical NaN value into the VM, to avoid signaling NaNs.
+    value = i::OS::nan_value();
+  }
+  ENTER_V8(internal_isolate);
+  i::Handle<i::Object> result = internal_isolate->factory()->NewNumber(value);
+  return Utils::NumberToLocal(result);
+}
+
+
+Local<Integer> v8::Integer::New(int32_t value) {
+  i::Isolate* isolate = i::Isolate::UncheckedCurrent();
+  EnsureInitializedForIsolate(isolate, "v8::Integer::New()");
+  return v8::Integer::New(value, reinterpret_cast<Isolate*>(isolate));
+}
+
+
+Local<Integer> Integer::NewFromUnsigned(uint32_t value) {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate, "v8::Integer::NewFromUnsigned()");
+  return Integer::NewFromUnsigned(value, reinterpret_cast<Isolate*>(isolate));
+}
+
+
+Local<Integer> v8::Integer::New(int32_t value, Isolate* isolate) {
+  i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
+  ASSERT(internal_isolate->IsInitialized());
+  if (i::Smi::IsValid(value)) {
+    return Utils::IntegerToLocal(i::Handle<i::Object>(i::Smi::FromInt(value),
+                                                      internal_isolate));
+  }
+  ENTER_V8(internal_isolate);
+  i::Handle<i::Object> result = internal_isolate->factory()->NewNumber(value);
+  return Utils::IntegerToLocal(result);
+}
+
+
+Local<Integer> v8::Integer::NewFromUnsigned(uint32_t value, Isolate* isolate) {
+  i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
+  ASSERT(internal_isolate->IsInitialized());
+  bool fits_into_int32_t = (value & (1 << 31)) == 0;
+  if (fits_into_int32_t) {
+    return Integer::New(static_cast<int32_t>(value), isolate);
+  }
+  ENTER_V8(internal_isolate);
+  i::Handle<i::Object> result = internal_isolate->factory()->NewNumber(value);
+  return Utils::IntegerToLocal(result);
+}
+
+
+#ifdef DEBUG
+v8::AssertNoGCScope::AssertNoGCScope(v8::Isolate* isolate) {
+  disallow_heap_allocation_ = new i::DisallowHeapAllocation();
+}
+
+
+v8::AssertNoGCScope::~AssertNoGCScope() {
+  delete static_cast<i::DisallowHeapAllocation*>(disallow_heap_allocation_);
+}
+#endif
+
+
+void V8::IgnoreOutOfMemoryException() {
+  EnterIsolateIfNeeded()->set_ignore_out_of_memory(true);
+}
+
+
+bool V8::AddMessageListener(MessageCallback that, Handle<Value> data) {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate, "v8::V8::AddMessageListener()");
+  ON_BAILOUT(isolate, "v8::V8::AddMessageListener()", return false);
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  NeanderArray listeners(isolate->factory()->message_listeners());
+  NeanderObject obj(2);
+  obj.set(0, *isolate->factory()->NewForeign(FUNCTION_ADDR(that)));
+  obj.set(1, data.IsEmpty() ? isolate->heap()->undefined_value()
+                            : *Utils::OpenHandle(*data));
+  listeners.add(obj.value());
+  return true;
+}
+
+
+void V8::RemoveMessageListeners(MessageCallback that) {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate, "v8::V8::RemoveMessageListener()");
+  ON_BAILOUT(isolate, "v8::V8::RemoveMessageListeners()", return);
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  NeanderArray listeners(isolate->factory()->message_listeners());
+  for (int i = 0; i < listeners.length(); i++) {
+    if (listeners.get(i)->IsUndefined()) continue;  // skip deleted ones
+
+    NeanderObject listener(i::JSObject::cast(listeners.get(i)));
+    i::Handle<i::Foreign> callback_obj(i::Foreign::cast(listener.get(0)));
+    if (callback_obj->foreign_address() == FUNCTION_ADDR(that)) {
+      listeners.set(i, isolate->heap()->undefined_value());
+    }
+  }
+}
+
+
+void V8::SetCaptureStackTraceForUncaughtExceptions(
+      bool capture,
+      int frame_limit,
+      StackTrace::StackTraceOptions options) {
+  i::Isolate::Current()->SetCaptureStackTraceForUncaughtExceptions(
+      capture,
+      frame_limit,
+      options);
+}
+
+
+void V8::SetCounterFunction(CounterLookupCallback callback) {
+  i::Isolate* isolate = EnterIsolateIfNeeded();
+  if (IsDeadCheck(isolate, "v8::V8::SetCounterFunction()")) return;
+  isolate->stats_table()->SetCounterFunction(callback);
+}
+
+
+void V8::SetCreateHistogramFunction(CreateHistogramCallback callback) {
+  i::Isolate* isolate = EnterIsolateIfNeeded();
+  if (IsDeadCheck(isolate, "v8::V8::SetCreateHistogramFunction()")) return;
+  isolate->stats_table()->SetCreateHistogramFunction(callback);
+  isolate->InitializeLoggingAndCounters();
+  isolate->counters()->ResetHistograms();
+}
+
+
+void V8::SetAddHistogramSampleFunction(AddHistogramSampleCallback callback) {
+  i::Isolate* isolate = EnterIsolateIfNeeded();
+  if (IsDeadCheck(isolate, "v8::V8::SetAddHistogramSampleFunction()")) return;
+  isolate->stats_table()->
+      SetAddHistogramSampleFunction(callback);
+}
+
+void V8::SetFailedAccessCheckCallbackFunction(
+      FailedAccessCheckCallback callback) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::V8::SetFailedAccessCheckCallbackFunction()")) {
+    return;
+  }
+  isolate->SetFailedAccessCheckCallback(callback);
+}
+
+
+intptr_t Isolate::AdjustAmountOfExternalAllocatedMemory(
+    intptr_t change_in_bytes) {
+  i::Heap* heap = reinterpret_cast<i::Isolate*>(this)->heap();
+  return heap->AdjustAmountOfExternalAllocatedMemory(change_in_bytes);
+}
+
+
+intptr_t V8::AdjustAmountOfExternalAllocatedMemory(intptr_t change_in_bytes) {
+  i::Isolate* isolate = i::Isolate::UncheckedCurrent();
+  if (isolate == NULL || !isolate->IsInitialized() ||
+      IsDeadCheck(isolate, "v8::V8::AdjustAmountOfExternalAllocatedMemory()")) {
+    return 0;
+  }
+  Isolate* isolate_ext = reinterpret_cast<Isolate*>(isolate);
+  return isolate_ext->AdjustAmountOfExternalAllocatedMemory(change_in_bytes);
+}
+
+
+HeapProfiler* Isolate::GetHeapProfiler() {
+  i::HeapProfiler* heap_profiler =
+      reinterpret_cast<i::Isolate*>(this)->heap_profiler();
+  return reinterpret_cast<HeapProfiler*>(heap_profiler);
+}
+
+
+CpuProfiler* Isolate::GetCpuProfiler() {
+  i::CpuProfiler* cpu_profiler =
+      reinterpret_cast<i::Isolate*>(this)->cpu_profiler();
+  return reinterpret_cast<CpuProfiler*>(cpu_profiler);
+}
+
+
+v8::Local<v8::Context> Isolate::GetCurrentContext() {
+  i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(this);
+  i::Context* context = internal_isolate->context();
+  if (context == NULL) return Local<Context>();
+  i::Context* native_context = context->global_object()->native_context();
+  if (native_context == NULL) return Local<Context>();
+  return Utils::ToLocal(i::Handle<i::Context>(native_context));
+}
+
+
+void Isolate::SetObjectGroupId(const Persistent<Value>& object,
+                               UniqueId id) {
+  i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(this);
+  internal_isolate->global_handles()->SetObjectGroupId(
+      Utils::OpenPersistent(object).location(),
+      id);
+}
+
+
+void Isolate::SetReferenceFromGroup(UniqueId id,
+                                    const Persistent<Value>& object) {
+  i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(this);
+  internal_isolate->global_handles()->SetReferenceFromGroup(
+      id,
+      Utils::OpenPersistent(object).location());
+}
+
+
+void Isolate::SetReference(const Persistent<Object>& parent,
+                           const Persistent<Value>& child) {
+  i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(this);
+  i::Object** parent_location = Utils::OpenPersistent(parent).location();
+  internal_isolate->global_handles()->SetReference(
+      reinterpret_cast<i::HeapObject**>(parent_location),
+      Utils::OpenPersistent(child).location());
+}
+
+
+void V8::SetGlobalGCPrologueCallback(GCCallback callback) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::V8::SetGlobalGCPrologueCallback()")) return;
+  isolate->heap()->SetGlobalGCPrologueCallback(callback);
+}
+
+
+void V8::SetGlobalGCEpilogueCallback(GCCallback callback) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::V8::SetGlobalGCEpilogueCallback()")) return;
+  isolate->heap()->SetGlobalGCEpilogueCallback(callback);
+}
+
+
+void V8::AddGCPrologueCallback(GCPrologueCallback callback, GCType gc_type) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::V8::AddGCPrologueCallback()")) return;
+  isolate->heap()->AddGCPrologueCallback(callback, gc_type);
+}
+
+
+void V8::RemoveGCPrologueCallback(GCPrologueCallback callback) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::V8::RemoveGCPrologueCallback()")) return;
+  isolate->heap()->RemoveGCPrologueCallback(callback);
+}
+
+
+void V8::AddGCEpilogueCallback(GCEpilogueCallback callback, GCType gc_type) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::V8::AddGCEpilogueCallback()")) return;
+  isolate->heap()->AddGCEpilogueCallback(callback, gc_type);
+}
+
+
+void V8::RemoveGCEpilogueCallback(GCEpilogueCallback callback) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::V8::RemoveGCEpilogueCallback()")) return;
+  isolate->heap()->RemoveGCEpilogueCallback(callback);
+}
+
+
+void V8::AddMemoryAllocationCallback(MemoryAllocationCallback callback,
+                                     ObjectSpace space,
+                                     AllocationAction action) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::V8::AddMemoryAllocationCallback()")) return;
+  isolate->memory_allocator()->AddMemoryAllocationCallback(
+      callback, space, action);
+}
+
+
+void V8::RemoveMemoryAllocationCallback(MemoryAllocationCallback callback) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::V8::RemoveMemoryAllocationCallback()")) return;
+  isolate->memory_allocator()->RemoveMemoryAllocationCallback(
+      callback);
+}
+
+
+void V8::AddCallCompletedCallback(CallCompletedCallback callback) {
+  if (callback == NULL) return;
+  i::Isolate::EnsureDefaultIsolate();
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::V8::AddLeaveScriptCallback()")) return;
+  i::V8::AddCallCompletedCallback(callback);
+}
+
+
+void V8::RemoveCallCompletedCallback(CallCompletedCallback callback) {
+  i::Isolate::EnsureDefaultIsolate();
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::V8::RemoveLeaveScriptCallback()")) return;
+  i::V8::RemoveCallCompletedCallback(callback);
+}
+
+
+void V8::PauseProfiler() {
+  i::Isolate* isolate = i::Isolate::Current();
+  isolate->logger()->PauseProfiler();
+}
+
+
+void V8::ResumeProfiler() {
+  i::Isolate* isolate = i::Isolate::Current();
+  isolate->logger()->ResumeProfiler();
+}
+
+
+bool V8::IsProfilerPaused() {
+  i::Isolate* isolate = i::Isolate::Current();
+  return isolate->logger()->IsProfilerPaused();
+}
+
+
+int V8::GetCurrentThreadId() {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate, "V8::GetCurrentThreadId()");
+  return isolate->thread_id().ToInteger();
+}
+
+
+void V8::TerminateExecution(int thread_id) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (!isolate->IsInitialized()) return;
+  API_ENTRY_CHECK(isolate, "V8::TerminateExecution()");
+  // If the thread_id identifies the current thread just terminate
+  // execution right away.  Otherwise, ask the thread manager to
+  // terminate the thread with the given id if any.
+  i::ThreadId internal_tid = i::ThreadId::FromInteger(thread_id);
+  if (isolate->thread_id().Equals(internal_tid)) {
+    isolate->stack_guard()->TerminateExecution();
+  } else {
+    isolate->thread_manager()->TerminateExecution(internal_tid);
+  }
+}
+
+
+void V8::TerminateExecution(Isolate* isolate) {
+  // If no isolate is supplied, use the default isolate.
+  if (isolate != NULL) {
+    reinterpret_cast<i::Isolate*>(isolate)->stack_guard()->TerminateExecution();
+  } else {
+    i::Isolate::GetDefaultIsolateStackGuard()->TerminateExecution();
+  }
+}
+
+
+bool V8::IsExecutionTerminating(Isolate* isolate) {
+  i::Isolate* i_isolate = isolate != NULL ?
+      reinterpret_cast<i::Isolate*>(isolate) : i::Isolate::Current();
+  return IsExecutionTerminatingCheck(i_isolate);
+}
+
+
+void V8::CancelTerminateExecution(Isolate* isolate) {
+  i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
+  i_isolate->stack_guard()->CancelTerminateExecution();
+}
+
+
+Isolate* Isolate::GetCurrent() {
+  i::Isolate* isolate = i::Isolate::UncheckedCurrent();
+  return reinterpret_cast<Isolate*>(isolate);
+}
+
+
+Isolate* Isolate::New() {
+  i::Isolate* isolate = new i::Isolate();
+  return reinterpret_cast<Isolate*>(isolate);
+}
+
+
+void Isolate::Dispose() {
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
+  if (!ApiCheck(!isolate->IsInUse(),
+                "v8::Isolate::Dispose()",
+                "Disposing the isolate that is entered by a thread.")) {
+    return;
+  }
+  isolate->TearDown();
+}
+
+
+void Isolate::Enter() {
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
+  isolate->Enter();
+}
+
+
+void Isolate::Exit() {
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
+  isolate->Exit();
+}
+
+
+void Isolate::GetHeapStatistics(HeapStatistics* heap_statistics) {
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
+  if (!isolate->IsInitialized()) {
+    heap_statistics->total_heap_size_ = 0;
+    heap_statistics->total_heap_size_executable_ = 0;
+    heap_statistics->total_physical_size_ = 0;
+    heap_statistics->used_heap_size_ = 0;
+    heap_statistics->heap_size_limit_ = 0;
+    return;
+  }
+  i::Heap* heap = isolate->heap();
+  heap_statistics->total_heap_size_ = heap->CommittedMemory();
+  heap_statistics->total_heap_size_executable_ =
+      heap->CommittedMemoryExecutable();
+  heap_statistics->total_physical_size_ = heap->CommittedPhysicalMemory();
+  heap_statistics->used_heap_size_ = heap->SizeOfObjects();
+  heap_statistics->heap_size_limit_ = heap->MaxReserved();
+}
+
+
+String::Utf8Value::Utf8Value(v8::Handle<v8::Value> obj)
+    : str_(NULL), length_(0) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::String::Utf8Value::Utf8Value()")) return;
+  if (obj.IsEmpty()) return;
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  TryCatch try_catch;
+  Handle<String> str = obj->ToString();
+  if (str.IsEmpty()) return;
+  i::Handle<i::String> i_str = Utils::OpenHandle(*str);
+  length_ = v8::Utf8Length(*i_str, isolate);
+  str_ = i::NewArray<char>(length_ + 1);
+  str->WriteUtf8(str_);
+}
+
+
+String::Utf8Value::~Utf8Value() {
+  i::DeleteArray(str_);
+}
+
+
+String::AsciiValue::AsciiValue(v8::Handle<v8::Value> obj)
+    : str_(NULL), length_(0) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::String::AsciiValue::AsciiValue()")) return;
+  if (obj.IsEmpty()) return;
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  TryCatch try_catch;
+  Handle<String> str = obj->ToString();
+  if (str.IsEmpty()) return;
+  length_ = str->Utf8Length();
+  str_ = i::NewArray<char>(length_ + 1);
+  str->WriteUtf8(str_);
+  ASSERT(i::String::NonAsciiStart(str_, length_) >= length_);
+}
+
+
+String::AsciiValue::~AsciiValue() {
+  i::DeleteArray(str_);
+}
+
+
+String::Value::Value(v8::Handle<v8::Value> obj)
+    : str_(NULL), length_(0) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (IsDeadCheck(isolate, "v8::String::Value::Value()")) return;
+  if (obj.IsEmpty()) return;
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  TryCatch try_catch;
+  Handle<String> str = obj->ToString();
+  if (str.IsEmpty()) return;
+  length_ = str->Length();
+  str_ = i::NewArray<uint16_t>(length_ + 1);
+  str->Write(str_);
+}
+
+
+String::Value::~Value() {
+  i::DeleteArray(str_);
+}
+
+
+Local<Value> Exception::RangeError(v8::Handle<v8::String> raw_message) {
+  i::Isolate* isolate = i::Isolate::Current();
+  LOG_API(isolate, "RangeError");
+  ON_BAILOUT(isolate, "v8::Exception::RangeError()", return Local<Value>());
+  ENTER_V8(isolate);
+  i::Object* error;
+  {
+    i::HandleScope scope(isolate);
+    i::Handle<i::String> message = Utils::OpenHandle(*raw_message);
+    i::Handle<i::Object> result = isolate->factory()->NewRangeError(message);
+    error = *result;
+  }
+  i::Handle<i::Object> result(error, isolate);
+  return Utils::ToLocal(result);
+}
+
+
+Local<Value> Exception::ReferenceError(v8::Handle<v8::String> raw_message) {
+  i::Isolate* isolate = i::Isolate::Current();
+  LOG_API(isolate, "ReferenceError");
+  ON_BAILOUT(isolate, "v8::Exception::ReferenceError()", return Local<Value>());
+  ENTER_V8(isolate);
+  i::Object* error;
+  {
+    i::HandleScope scope(isolate);
+    i::Handle<i::String> message = Utils::OpenHandle(*raw_message);
+    i::Handle<i::Object> result =
+        isolate->factory()->NewReferenceError(message);
+    error = *result;
+  }
+  i::Handle<i::Object> result(error, isolate);
+  return Utils::ToLocal(result);
+}
+
+
+Local<Value> Exception::SyntaxError(v8::Handle<v8::String> raw_message) {
+  i::Isolate* isolate = i::Isolate::Current();
+  LOG_API(isolate, "SyntaxError");
+  ON_BAILOUT(isolate, "v8::Exception::SyntaxError()", return Local<Value>());
+  ENTER_V8(isolate);
+  i::Object* error;
+  {
+    i::HandleScope scope(isolate);
+    i::Handle<i::String> message = Utils::OpenHandle(*raw_message);
+    i::Handle<i::Object> result = isolate->factory()->NewSyntaxError(message);
+    error = *result;
+  }
+  i::Handle<i::Object> result(error, isolate);
+  return Utils::ToLocal(result);
+}
+
+
+Local<Value> Exception::TypeError(v8::Handle<v8::String> raw_message) {
+  i::Isolate* isolate = i::Isolate::Current();
+  LOG_API(isolate, "TypeError");
+  ON_BAILOUT(isolate, "v8::Exception::TypeError()", return Local<Value>());
+  ENTER_V8(isolate);
+  i::Object* error;
+  {
+    i::HandleScope scope(isolate);
+    i::Handle<i::String> message = Utils::OpenHandle(*raw_message);
+    i::Handle<i::Object> result = isolate->factory()->NewTypeError(message);
+    error = *result;
+  }
+  i::Handle<i::Object> result(error, isolate);
+  return Utils::ToLocal(result);
+}
+
+
+Local<Value> Exception::Error(v8::Handle<v8::String> raw_message) {
+  i::Isolate* isolate = i::Isolate::Current();
+  LOG_API(isolate, "Error");
+  ON_BAILOUT(isolate, "v8::Exception::Error()", return Local<Value>());
+  ENTER_V8(isolate);
+  i::Object* error;
+  {
+    i::HandleScope scope(isolate);
+    i::Handle<i::String> message = Utils::OpenHandle(*raw_message);
+    i::Handle<i::Object> result = isolate->factory()->NewError(message);
+    error = *result;
+  }
+  i::Handle<i::Object> result(error, isolate);
+  return Utils::ToLocal(result);
+}
+
+
+// --- D e b u g   S u p p o r t ---
+
+#ifdef ENABLE_DEBUGGER_SUPPORT
+
+static void EventCallbackWrapper(const v8::Debug::EventDetails& event_details) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (isolate->debug_event_callback() != NULL) {
+    isolate->debug_event_callback()(event_details.GetEvent(),
+                                    event_details.GetExecutionState(),
+                                    event_details.GetEventData(),
+                                    event_details.GetCallbackData());
+  }
+}
+
+
+bool Debug::SetDebugEventListener(EventCallback that, Handle<Value> data) {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate, "v8::Debug::SetDebugEventListener()");
+  ON_BAILOUT(isolate, "v8::Debug::SetDebugEventListener()", return false);
+  ENTER_V8(isolate);
+
+  isolate->set_debug_event_callback(that);
+
+  i::HandleScope scope(isolate);
+  i::Handle<i::Object> foreign = isolate->factory()->undefined_value();
+  if (that != NULL) {
+    foreign =
+        isolate->factory()->NewForeign(FUNCTION_ADDR(EventCallbackWrapper));
+  }
+  isolate->debugger()->SetEventListener(foreign,
+                                        Utils::OpenHandle(*data, true));
+  return true;
+}
+
+
+bool Debug::SetDebugEventListener2(EventCallback2 that, Handle<Value> data) {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate, "v8::Debug::SetDebugEventListener2()");
+  ON_BAILOUT(isolate, "v8::Debug::SetDebugEventListener2()", return false);
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::Object> foreign = isolate->factory()->undefined_value();
+  if (that != NULL) {
+    foreign = isolate->factory()->NewForeign(FUNCTION_ADDR(that));
+  }
+  isolate->debugger()->SetEventListener(foreign,
+                                        Utils::OpenHandle(*data, true));
+  return true;
+}
+
+
+bool Debug::SetDebugEventListener(v8::Handle<v8::Object> that,
+                                  Handle<Value> data) {
+  i::Isolate* isolate = i::Isolate::Current();
+  ON_BAILOUT(isolate, "v8::Debug::SetDebugEventListener()", return false);
+  ENTER_V8(isolate);
+  isolate->debugger()->SetEventListener(Utils::OpenHandle(*that),
+                                        Utils::OpenHandle(*data, true));
+  return true;
+}
+
+
+void Debug::DebugBreak(Isolate* isolate) {
+  // If no isolate is supplied, use the default isolate.
+  if (isolate != NULL) {
+    reinterpret_cast<i::Isolate*>(isolate)->stack_guard()->DebugBreak();
+  } else {
+    i::Isolate::GetDefaultIsolateStackGuard()->DebugBreak();
+  }
+}
+
+
+void Debug::CancelDebugBreak(Isolate* isolate) {
+  // If no isolate is supplied, use the default isolate.
+  if (isolate != NULL) {
+    i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
+    internal_isolate->stack_guard()->Continue(i::DEBUGBREAK);
+  } else {
+    i::Isolate::GetDefaultIsolateStackGuard()->Continue(i::DEBUGBREAK);
+  }
+}
+
+
+void Debug::DebugBreakForCommand(ClientData* data, Isolate* isolate) {
+  // If no isolate is supplied, use the default isolate.
+  if (isolate != NULL) {
+    i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
+    internal_isolate->debugger()->EnqueueDebugCommand(data);
+  } else {
+    i::Isolate::GetDefaultIsolateDebugger()->EnqueueDebugCommand(data);
+  }
+}
+
+
+static void MessageHandlerWrapper(const v8::Debug::Message& message) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (isolate->message_handler()) {
+    v8::String::Value json(message.GetJSON());
+    (isolate->message_handler())(*json, json.length(), message.GetClientData());
+  }
+}
+
+
+void Debug::SetMessageHandler(v8::Debug::MessageHandler handler,
+                              bool message_handler_thread) {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate, "v8::Debug::SetMessageHandler");
+  ENTER_V8(isolate);
+
+  // Message handler thread not supported any more. Parameter temporally left in
+  // the API for client compatibility reasons.
+  CHECK(!message_handler_thread);
+
+  // TODO(sgjesse) support the old message handler API through a simple wrapper.
+  isolate->set_message_handler(handler);
+  if (handler != NULL) {
+    isolate->debugger()->SetMessageHandler(MessageHandlerWrapper);
+  } else {
+    isolate->debugger()->SetMessageHandler(NULL);
+  }
+}
+
+
+void Debug::SetMessageHandler2(v8::Debug::MessageHandler2 handler) {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate, "v8::Debug::SetMessageHandler");
+  ENTER_V8(isolate);
+  isolate->debugger()->SetMessageHandler(handler);
+}
+
+
+void Debug::SendCommand(const uint16_t* command, int length,
+                        ClientData* client_data,
+                        Isolate* isolate) {
+  // If no isolate is supplied, use the default isolate.
+  if (isolate != NULL) {
+    i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
+    internal_isolate->debugger()->ProcessCommand(
+        i::Vector<const uint16_t>(command, length), client_data);
+  } else {
+    i::Isolate::GetDefaultIsolateDebugger()->ProcessCommand(
+        i::Vector<const uint16_t>(command, length), client_data);
+  }
+}
+
+
+void Debug::SetHostDispatchHandler(HostDispatchHandler handler,
+                                   int period) {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate, "v8::Debug::SetHostDispatchHandler");
+  ENTER_V8(isolate);
+  isolate->debugger()->SetHostDispatchHandler(handler, period);
+}
+
+
+void Debug::SetDebugMessageDispatchHandler(
+    DebugMessageDispatchHandler handler, bool provide_locker) {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate,
+                              "v8::Debug::SetDebugMessageDispatchHandler");
+  ENTER_V8(isolate);
+  isolate->debugger()->SetDebugMessageDispatchHandler(
+      handler, provide_locker);
+}
+
+
+Local<Value> Debug::Call(v8::Handle<v8::Function> fun,
+                         v8::Handle<v8::Value> data) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (!isolate->IsInitialized()) return Local<Value>();
+  ON_BAILOUT(isolate, "v8::Debug::Call()", return Local<Value>());
+  ENTER_V8(isolate);
+  i::Handle<i::Object> result;
+  EXCEPTION_PREAMBLE(isolate);
+  if (data.IsEmpty()) {
+    result = isolate->debugger()->Call(Utils::OpenHandle(*fun),
+                                       isolate->factory()->undefined_value(),
+                                       &has_pending_exception);
+  } else {
+    result = isolate->debugger()->Call(Utils::OpenHandle(*fun),
+                                       Utils::OpenHandle(*data),
+                                       &has_pending_exception);
+  }
+  EXCEPTION_BAILOUT_CHECK(isolate, Local<Value>());
+  return Utils::ToLocal(result);
+}
+
+
+Local<Value> Debug::GetMirror(v8::Handle<v8::Value> obj) {
+  i::Isolate* isolate = i::Isolate::Current();
+  if (!isolate->IsInitialized()) return Local<Value>();
+  ON_BAILOUT(isolate, "v8::Debug::GetMirror()", return Local<Value>());
+  ENTER_V8(isolate);
+  v8::HandleScope scope(reinterpret_cast<Isolate*>(isolate));
+  i::Debug* isolate_debug = isolate->debug();
+  isolate_debug->Load();
+  i::Handle<i::JSObject> debug(isolate_debug->debug_context()->global_object());
+  i::Handle<i::String> name = isolate->factory()->InternalizeOneByteString(
+      STATIC_ASCII_VECTOR("MakeMirror"));
+  i::Handle<i::Object> fun_obj = i::GetProperty(isolate, debug, name);
+  i::Handle<i::JSFunction> fun = i::Handle<i::JSFunction>::cast(fun_obj);
+  v8::Handle<v8::Function> v8_fun = Utils::ToLocal(fun);
+  const int kArgc = 1;
+  v8::Handle<v8::Value> argv[kArgc] = { obj };
+  EXCEPTION_PREAMBLE(isolate);
+  v8::Handle<v8::Value> result = v8_fun->Call(Utils::ToLocal(debug),
+                                              kArgc,
+                                              argv);
+  EXCEPTION_BAILOUT_CHECK(isolate, Local<Value>());
+  return scope.Close(result);
+}
+
+
+bool Debug::EnableAgent(const char* name, int port, bool wait_for_connection) {
+  return i::Isolate::Current()->debugger()->StartAgent(name, port,
+                                                       wait_for_connection);
+}
+
+
+void Debug::DisableAgent() {
+  return i::Isolate::Current()->debugger()->StopAgent();
+}
+
+
+void Debug::ProcessDebugMessages() {
+  i::Execution::ProcessDebugMessages(true);
+}
+
+
+Local<Context> Debug::GetDebugContext() {
+  i::Isolate* isolate = i::Isolate::Current();
+  EnsureInitializedForIsolate(isolate, "v8::Debug::GetDebugContext()");
+  ENTER_V8(isolate);
+  return Utils::ToLocal(i::Isolate::Current()->debugger()->GetDebugContext());
+}
+
+
+void Debug::SetLiveEditEnabled(bool enable, Isolate* isolate) {
+  // If no isolate is supplied, use the default isolate.
+  i::Debugger* debugger;
+  if (isolate != NULL) {
+    i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
+    debugger = internal_isolate->debugger();
+  } else {
+    debugger = i::Isolate::GetDefaultIsolateDebugger();
+  }
+  debugger->set_live_edit_enabled(enable);
+}
+
+
+#endif  // ENABLE_DEBUGGER_SUPPORT
+
+
+Handle<String> CpuProfileNode::GetFunctionName() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::CpuProfileNode::GetFunctionName");
+  const i::ProfileNode* node = reinterpret_cast<const i::ProfileNode*>(this);
+  const i::CodeEntry* entry = node->entry();
+  if (!entry->has_name_prefix()) {
+    return ToApiHandle<String>(
+        isolate->factory()->InternalizeUtf8String(entry->name()));
+  } else {
+    return ToApiHandle<String>(isolate->factory()->NewConsString(
+        isolate->factory()->InternalizeUtf8String(entry->name_prefix()),
+        isolate->factory()->InternalizeUtf8String(entry->name())));
+  }
+}
+
+
+int CpuProfileNode::GetScriptId() const {
+  const i::ProfileNode* node = reinterpret_cast<const i::ProfileNode*>(this);
+  const i::CodeEntry* entry = node->entry();
+  return entry->script_id();
+}
+
+
+Handle<String> CpuProfileNode::GetScriptResourceName() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::CpuProfileNode::GetScriptResourceName");
+  const i::ProfileNode* node = reinterpret_cast<const i::ProfileNode*>(this);
+  return ToApiHandle<String>(isolate->factory()->InternalizeUtf8String(
+      node->entry()->resource_name()));
+}
+
+
+int CpuProfileNode::GetLineNumber() const {
+  return reinterpret_cast<const i::ProfileNode*>(this)->entry()->line_number();
+}
+
+
+double CpuProfileNode::GetTotalTime() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::CpuProfileNode::GetTotalTime");
+  return reinterpret_cast<const i::ProfileNode*>(this)->GetTotalMillis();
+}
+
+
+double CpuProfileNode::GetSelfTime() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::CpuProfileNode::GetSelfTime");
+  return reinterpret_cast<const i::ProfileNode*>(this)->GetSelfMillis();
+}
+
+
+double CpuProfileNode::GetTotalSamplesCount() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::CpuProfileNode::GetTotalSamplesCount");
+  return reinterpret_cast<const i::ProfileNode*>(this)->total_ticks();
+}
+
+
+double CpuProfileNode::GetSelfSamplesCount() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::CpuProfileNode::GetSelfSamplesCount");
+  return reinterpret_cast<const i::ProfileNode*>(this)->self_ticks();
+}
+
+
+unsigned CpuProfileNode::GetHitCount() const {
+  return reinterpret_cast<const i::ProfileNode*>(this)->self_ticks();
+}
+
+
+unsigned CpuProfileNode::GetCallUid() const {
+  return reinterpret_cast<const i::ProfileNode*>(this)->entry()->GetCallUid();
+}
+
+
+unsigned CpuProfileNode::GetNodeId() const {
+  return reinterpret_cast<const i::ProfileNode*>(this)->id();
+}
+
+
+int CpuProfileNode::GetChildrenCount() const {
+  return reinterpret_cast<const i::ProfileNode*>(this)->children()->length();
+}
+
+
+const CpuProfileNode* CpuProfileNode::GetChild(int index) const {
+  const i::ProfileNode* child =
+      reinterpret_cast<const i::ProfileNode*>(this)->children()->at(index);
+  return reinterpret_cast<const CpuProfileNode*>(child);
+}
+
+
+void CpuProfile::Delete() {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::CpuProfile::Delete");
+  i::CpuProfiler* profiler = isolate->cpu_profiler();
+  ASSERT(profiler != NULL);
+  profiler->DeleteProfile(reinterpret_cast<i::CpuProfile*>(this));
+  if (profiler->GetProfilesCount() == 0) {
+    // If this was the last profile, clean up all accessory data as well.
+    profiler->DeleteAllProfiles();
+  }
+}
+
+
+unsigned CpuProfile::GetUid() const {
+  return reinterpret_cast<const i::CpuProfile*>(this)->uid();
+}
+
+
+Handle<String> CpuProfile::GetTitle() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::CpuProfile::GetTitle");
+  const i::CpuProfile* profile = reinterpret_cast<const i::CpuProfile*>(this);
+  return ToApiHandle<String>(isolate->factory()->InternalizeUtf8String(
+      profile->title()));
+}
+
+
+const CpuProfileNode* CpuProfile::GetTopDownRoot() const {
+  const i::CpuProfile* profile = reinterpret_cast<const i::CpuProfile*>(this);
+  return reinterpret_cast<const CpuProfileNode*>(profile->top_down()->root());
+}
+
+
+const CpuProfileNode* CpuProfile::GetSample(int index) const {
+  const i::CpuProfile* profile = reinterpret_cast<const i::CpuProfile*>(this);
+  return reinterpret_cast<const CpuProfileNode*>(profile->sample(index));
+}
+
+
+int64_t CpuProfile::GetStartTime() const {
+  const i::CpuProfile* profile = reinterpret_cast<const i::CpuProfile*>(this);
+  return profile->start_time_us();
+}
+
+
+int64_t CpuProfile::GetEndTime() const {
+  const i::CpuProfile* profile = reinterpret_cast<const i::CpuProfile*>(this);
+  return profile->end_time_us();
+}
+
+
+int CpuProfile::GetSamplesCount() const {
+  return reinterpret_cast<const i::CpuProfile*>(this)->samples_count();
+}
+
+
+int CpuProfiler::GetProfileCount() {
+  return reinterpret_cast<i::CpuProfiler*>(this)->GetProfilesCount();
+}
+
+
+const CpuProfile* CpuProfiler::GetCpuProfile(int index) {
+  return reinterpret_cast<const CpuProfile*>(
+      reinterpret_cast<i::CpuProfiler*>(this)->GetProfile(index));
+}
+
+
+void CpuProfiler::StartCpuProfiling(Handle<String> title, bool record_samples) {
+  reinterpret_cast<i::CpuProfiler*>(this)->StartProfiling(
+      *Utils::OpenHandle(*title), record_samples);
+}
+
+
+const CpuProfile* CpuProfiler::StopCpuProfiling(Handle<String> title) {
+  return reinterpret_cast<const CpuProfile*>(
+      reinterpret_cast<i::CpuProfiler*>(this)->StopProfiling(
+          *Utils::OpenHandle(*title)));
+}
+
+
+void CpuProfiler::DeleteAllCpuProfiles() {
+  reinterpret_cast<i::CpuProfiler*>(this)->DeleteAllProfiles();
+}
+
+
+void CpuProfiler::SetIdle(bool is_idle) {
+  i::Isolate* isolate = reinterpret_cast<i::CpuProfiler*>(this)->isolate();
+  i::StateTag state = isolate->current_vm_state();
+  ASSERT(state == i::EXTERNAL || state == i::IDLE);
+  if (isolate->js_entry_sp() != NULL) return;
+  if (is_idle) {
+    isolate->set_current_vm_state(i::IDLE);
+  } else if (state == i::IDLE) {
+    isolate->set_current_vm_state(i::EXTERNAL);
+  }
+}
+
+
+static i::HeapGraphEdge* ToInternal(const HeapGraphEdge* edge) {
+  return const_cast<i::HeapGraphEdge*>(
+      reinterpret_cast<const i::HeapGraphEdge*>(edge));
+}
+
+
+HeapGraphEdge::Type HeapGraphEdge::GetType() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::HeapGraphEdge::GetType");
+  return static_cast<HeapGraphEdge::Type>(ToInternal(this)->type());
+}
+
+
+Handle<Value> HeapGraphEdge::GetName() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::HeapGraphEdge::GetName");
+  i::HeapGraphEdge* edge = ToInternal(this);
+  switch (edge->type()) {
+    case i::HeapGraphEdge::kContextVariable:
+    case i::HeapGraphEdge::kInternal:
+    case i::HeapGraphEdge::kProperty:
+    case i::HeapGraphEdge::kShortcut:
+      return ToApiHandle<String>(
+          isolate->factory()->InternalizeUtf8String(edge->name()));
+    case i::HeapGraphEdge::kElement:
+    case i::HeapGraphEdge::kHidden:
+    case i::HeapGraphEdge::kWeak:
+      return ToApiHandle<Number>(
+          isolate->factory()->NewNumberFromInt(edge->index()));
+    default: UNREACHABLE();
+  }
+  return v8::Undefined();
+}
+
+
+const HeapGraphNode* HeapGraphEdge::GetFromNode() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::HeapGraphEdge::GetFromNode");
+  const i::HeapEntry* from = ToInternal(this)->from();
+  return reinterpret_cast<const HeapGraphNode*>(from);
+}
+
+
+const HeapGraphNode* HeapGraphEdge::GetToNode() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::HeapGraphEdge::GetToNode");
+  const i::HeapEntry* to = ToInternal(this)->to();
+  return reinterpret_cast<const HeapGraphNode*>(to);
+}
+
+
+static i::HeapEntry* ToInternal(const HeapGraphNode* entry) {
+  return const_cast<i::HeapEntry*>(
+      reinterpret_cast<const i::HeapEntry*>(entry));
+}
+
+
+HeapGraphNode::Type HeapGraphNode::GetType() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::HeapGraphNode::GetType");
+  return static_cast<HeapGraphNode::Type>(ToInternal(this)->type());
+}
+
+
+Handle<String> HeapGraphNode::GetName() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::HeapGraphNode::GetName");
+  return ToApiHandle<String>(
+      isolate->factory()->InternalizeUtf8String(ToInternal(this)->name()));
+}
+
+
+SnapshotObjectId HeapGraphNode::GetId() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::HeapGraphNode::GetId");
+  return ToInternal(this)->id();
+}
+
+
+int HeapGraphNode::GetSelfSize() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::HeapGraphNode::GetSelfSize");
+  return ToInternal(this)->self_size();
+}
+
+
+int HeapGraphNode::GetChildrenCount() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::HeapSnapshot::GetChildrenCount");
+  return ToInternal(this)->children().length();
+}
+
+
+const HeapGraphEdge* HeapGraphNode::GetChild(int index) const {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::HeapSnapshot::GetChild");
+  return reinterpret_cast<const HeapGraphEdge*>(
+      ToInternal(this)->children()[index]);
+}
+
+
+v8::Handle<v8::Value> HeapGraphNode::GetHeapValue() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::HeapGraphNode::GetHeapValue");
+  i::Handle<i::HeapObject> object = ToInternal(this)->GetHeapObject();
+  return !object.is_null() ?
+      ToApiHandle<Value>(object) :
+      ToApiHandle<Value>(isolate->factory()->undefined_value());
+}
+
+
+static i::HeapSnapshot* ToInternal(const HeapSnapshot* snapshot) {
+  return const_cast<i::HeapSnapshot*>(
+      reinterpret_cast<const i::HeapSnapshot*>(snapshot));
+}
+
+
+void HeapSnapshot::Delete() {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::HeapSnapshot::Delete");
+  if (isolate->heap_profiler()->GetSnapshotsCount() > 1) {
+    ToInternal(this)->Delete();
+  } else {
+    // If this is the last snapshot, clean up all accessory data as well.
+    isolate->heap_profiler()->DeleteAllSnapshots();
+  }
+}
+
+
+unsigned HeapSnapshot::GetUid() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::HeapSnapshot::GetUid");
+  return ToInternal(this)->uid();
+}
+
+
+Handle<String> HeapSnapshot::GetTitle() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::HeapSnapshot::GetTitle");
+  return ToApiHandle<String>(
+      isolate->factory()->InternalizeUtf8String(ToInternal(this)->title()));
+}
+
+
+const HeapGraphNode* HeapSnapshot::GetRoot() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::HeapSnapshot::GetHead");
+  return reinterpret_cast<const HeapGraphNode*>(ToInternal(this)->root());
+}
+
+
+const HeapGraphNode* HeapSnapshot::GetNodeById(SnapshotObjectId id) const {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::HeapSnapshot::GetNodeById");
+  return reinterpret_cast<const HeapGraphNode*>(
+      ToInternal(this)->GetEntryById(id));
+}
+
+
+int HeapSnapshot::GetNodesCount() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::HeapSnapshot::GetNodesCount");
+  return ToInternal(this)->entries().length();
+}
+
+
+const HeapGraphNode* HeapSnapshot::GetNode(int index) const {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::HeapSnapshot::GetNode");
+  return reinterpret_cast<const HeapGraphNode*>(
+      &ToInternal(this)->entries().at(index));
+}
+
+
+SnapshotObjectId HeapSnapshot::GetMaxSnapshotJSObjectId() const {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::HeapSnapshot::GetMaxSnapshotJSObjectId");
+  return ToInternal(this)->max_snapshot_js_object_id();
+}
+
+
+void HeapSnapshot::Serialize(OutputStream* stream,
+                             HeapSnapshot::SerializationFormat format) const {
+  i::Isolate* isolate = i::Isolate::Current();
+  IsDeadCheck(isolate, "v8::HeapSnapshot::Serialize");
+  ApiCheck(format == kJSON,
+           "v8::HeapSnapshot::Serialize",
+           "Unknown serialization format");
+  ApiCheck(stream->GetOutputEncoding() == OutputStream::kAscii,
+           "v8::HeapSnapshot::Serialize",
+           "Unsupported output encoding");
+  ApiCheck(stream->GetChunkSize() > 0,
+           "v8::HeapSnapshot::Serialize",
+           "Invalid stream chunk size");
+  i::HeapSnapshotJSONSerializer serializer(ToInternal(this));
+  serializer.Serialize(stream);
+}
+
+
+int HeapProfiler::GetSnapshotCount() {
+  return reinterpret_cast<i::HeapProfiler*>(this)->GetSnapshotsCount();
+}
+
+
+const HeapSnapshot* HeapProfiler::GetHeapSnapshot(int index) {
+  return reinterpret_cast<const HeapSnapshot*>(
+      reinterpret_cast<i::HeapProfiler*>(this)->GetSnapshot(index));
+}
+
+
+SnapshotObjectId HeapProfiler::GetObjectId(Handle<Value> value) {
+  i::Handle<i::Object> obj = Utils::OpenHandle(*value);
+  return reinterpret_cast<i::HeapProfiler*>(this)->GetSnapshotObjectId(obj);
+}
+
+
+const HeapSnapshot* HeapProfiler::TakeHeapSnapshot(
+    Handle<String> title,
+    ActivityControl* control,
+    ObjectNameResolver* resolver) {
+  return reinterpret_cast<const HeapSnapshot*>(
+      reinterpret_cast<i::HeapProfiler*>(this)->TakeSnapshot(
+          *Utils::OpenHandle(*title), control, resolver));
+}
+
+
+void HeapProfiler::StartTrackingHeapObjects() {
+  reinterpret_cast<i::HeapProfiler*>(this)->StartHeapObjectsTracking();
+}
+
+
+void HeapProfiler::StopTrackingHeapObjects() {
+  reinterpret_cast<i::HeapProfiler*>(this)->StopHeapObjectsTracking();
+}
+
+
+SnapshotObjectId HeapProfiler::GetHeapStats(OutputStream* stream) {
+  return reinterpret_cast<i::HeapProfiler*>(this)->PushHeapObjectsStats(stream);
+}
+
+
+void HeapProfiler::DeleteAllHeapSnapshots() {
+  reinterpret_cast<i::HeapProfiler*>(this)->DeleteAllSnapshots();
+}
+
+
+void HeapProfiler::SetWrapperClassInfoProvider(uint16_t class_id,
+                                               WrapperInfoCallback callback) {
+  reinterpret_cast<i::HeapProfiler*>(this)->DefineWrapperClass(class_id,
+                                                               callback);
+}
+
+
+size_t HeapProfiler::GetProfilerMemorySize() {
+  return reinterpret_cast<i::HeapProfiler*>(this)->
+      GetMemorySizeUsedByProfiler();
+}
+
+
+void HeapProfiler::SetRetainedObjectInfo(UniqueId id,
+                                         RetainedObjectInfo* info) {
+  reinterpret_cast<i::HeapProfiler*>(this)->SetRetainedObjectInfo(id, info);
+}
+
+
+v8::Testing::StressType internal::Testing::stress_type_ =
+    v8::Testing::kStressTypeOpt;
+
+
+void Testing::SetStressRunType(Testing::StressType type) {
+  internal::Testing::set_stress_type(type);
+}
+
+
+int Testing::GetStressRuns() {
+  if (internal::FLAG_stress_runs != 0) return internal::FLAG_stress_runs;
+#ifdef DEBUG
+  // In debug mode the code runs much slower so stressing will only make two
+  // runs.
+  return 2;
+#else
+  return 5;
+#endif
+}
+
+
+static void SetFlagsFromString(const char* flags) {
+  V8::SetFlagsFromString(flags, i::StrLength(flags));
+}
+
+
+void Testing::PrepareStressRun(int run) {
+  static const char* kLazyOptimizations =
+      "--prepare-always-opt "
+      "--max-inlined-source-size=999999 "
+      "--max-inlined-nodes=999999 "
+      "--max-inlined-nodes-cumulative=999999 "
+      "--noalways-opt";
+  static const char* kForcedOptimizations = "--always-opt";
+
+  // If deoptimization stressed turn on frequent deoptimization. If no value
+  // is spefified through --deopt-every-n-times use a default default value.
+  static const char* kDeoptEvery13Times = "--deopt-every-n-times=13";
+  if (internal::Testing::stress_type() == Testing::kStressTypeDeopt &&
+      internal::FLAG_deopt_every_n_times == 0) {
+    SetFlagsFromString(kDeoptEvery13Times);
+  }
+
+#ifdef DEBUG
+  // As stressing in debug mode only make two runs skip the deopt stressing
+  // here.
+  if (run == GetStressRuns() - 1) {
+    SetFlagsFromString(kForcedOptimizations);
+  } else {
+    SetFlagsFromString(kLazyOptimizations);
+  }
+#else
+  if (run == GetStressRuns() - 1) {
+    SetFlagsFromString(kForcedOptimizations);
+  } else if (run != GetStressRuns() - 2) {
+    SetFlagsFromString(kLazyOptimizations);
+  }
+#endif
+}
+
+
+// TODO(svenpanne) Deprecate this.
+void Testing::DeoptimizeAll() {
+  i::Isolate* isolate = i::Isolate::Current();
+  i::HandleScope scope(isolate);
+  internal::Deoptimizer::DeoptimizeAll(isolate);
+}
+
+
+namespace internal {
+
+
+void HandleScopeImplementer::FreeThreadResources() {
+  Free();
+}
+
+
+char* HandleScopeImplementer::ArchiveThread(char* storage) {
+  v8::ImplementationUtilities::HandleScopeData* current =
+      isolate_->handle_scope_data();
+  handle_scope_data_ = *current;
+  OS::MemCopy(storage, this, sizeof(*this));
+
+  ResetAfterArchive();
+  current->Initialize();
+
+  return storage + ArchiveSpacePerThread();
+}
+
+
+int HandleScopeImplementer::ArchiveSpacePerThread() {
+  return sizeof(HandleScopeImplementer);
+}
+
+
+char* HandleScopeImplementer::RestoreThread(char* storage) {
+  OS::MemCopy(this, storage, sizeof(*this));
+  *isolate_->handle_scope_data() = handle_scope_data_;
+  return storage + ArchiveSpacePerThread();
+}
+
+
+void HandleScopeImplementer::IterateThis(ObjectVisitor* v) {
+#ifdef DEBUG
+  bool found_block_before_deferred = false;
+#endif
+  // Iterate over all handles in the blocks except for the last.
+  for (int i = blocks()->length() - 2; i >= 0; --i) {
+    Object** block = blocks()->at(i);
+    if (last_handle_before_deferred_block_ != NULL &&
+        (last_handle_before_deferred_block_ <= &block[kHandleBlockSize]) &&
+        (last_handle_before_deferred_block_ >= block)) {
+      v->VisitPointers(block, last_handle_before_deferred_block_);
+      ASSERT(!found_block_before_deferred);
+#ifdef DEBUG
+      found_block_before_deferred = true;
+#endif
+    } else {
+      v->VisitPointers(block, &block[kHandleBlockSize]);
+    }
+  }
+
+  ASSERT(last_handle_before_deferred_block_ == NULL ||
+         found_block_before_deferred);
+
+  // Iterate over live handles in the last block (if any).
+  if (!blocks()->is_empty()) {
+    v->VisitPointers(blocks()->last(), handle_scope_data_.next);
+  }
+
+  if (!saved_contexts_.is_empty()) {
+    Object** start = reinterpret_cast<Object**>(&saved_contexts_.first());
+    v->VisitPointers(start, start + saved_contexts_.length());
+  }
+}
+
+
+void HandleScopeImplementer::Iterate(ObjectVisitor* v) {
+  v8::ImplementationUtilities::HandleScopeData* current =
+      isolate_->handle_scope_data();
+  handle_scope_data_ = *current;
+  IterateThis(v);
+}
+
+
+char* HandleScopeImplementer::Iterate(ObjectVisitor* v, char* storage) {
+  HandleScopeImplementer* scope_implementer =
+      reinterpret_cast<HandleScopeImplementer*>(storage);
+  scope_implementer->IterateThis(v);
+  return storage + ArchiveSpacePerThread();
+}
+
+
+DeferredHandles* HandleScopeImplementer::Detach(Object** prev_limit) {
+  DeferredHandles* deferred =
+      new DeferredHandles(isolate()->handle_scope_data()->next, isolate());
+
+  while (!blocks_.is_empty()) {
+    Object** block_start = blocks_.last();
+    Object** block_limit = &block_start[kHandleBlockSize];
+    // We should not need to check for SealHandleScope here. Assert this.
+    ASSERT(prev_limit == block_limit ||
+           !(block_start <= prev_limit && prev_limit <= block_limit));
+    if (prev_limit == block_limit) break;
+    deferred->blocks_.Add(blocks_.last());
+    blocks_.RemoveLast();
+  }
+
+  // deferred->blocks_ now contains the blocks installed on the
+  // HandleScope stack since BeginDeferredScope was called, but in
+  // reverse order.
+
+  ASSERT(prev_limit == NULL || !blocks_.is_empty());
+
+  ASSERT(!blocks_.is_empty() && prev_limit != NULL);
+  ASSERT(last_handle_before_deferred_block_ != NULL);
+  last_handle_before_deferred_block_ = NULL;
+  return deferred;
+}
+
+
+void HandleScopeImplementer::BeginDeferredScope() {
+  ASSERT(last_handle_before_deferred_block_ == NULL);
+  last_handle_before_deferred_block_ = isolate()->handle_scope_data()->next;
+}
+
+
+DeferredHandles::~DeferredHandles() {
+  isolate_->UnlinkDeferredHandles(this);
+
+  for (int i = 0; i < blocks_.length(); i++) {
+#ifdef ENABLE_EXTRA_CHECKS
+    HandleScope::ZapRange(blocks_[i], &blocks_[i][kHandleBlockSize]);
+#endif
+    isolate_->handle_scope_implementer()->ReturnBlock(blocks_[i]);
+  }
+}
+
+
+void DeferredHandles::Iterate(ObjectVisitor* v) {
+  ASSERT(!blocks_.is_empty());
+
+  ASSERT((first_block_limit_ >= blocks_.first()) &&
+         (first_block_limit_ <= &(blocks_.first())[kHandleBlockSize]));
+
+  v->VisitPointers(blocks_.first(), first_block_limit_);
+
+  for (int i = 1; i < blocks_.length(); i++) {
+    v->VisitPointers(blocks_[i], &blocks_[i][kHandleBlockSize]);
+  }
+}
+
+
+v8::Handle<v8::Value> InvokeAccessorGetter(
+    v8::Local<v8::String> property,
+    const v8::AccessorInfo& info,
+    v8::AccessorGetter getter) {
+  Isolate* isolate = reinterpret_cast<Isolate*>(info.GetIsolate());
+  Address getter_address = reinterpret_cast<Address>(reinterpret_cast<intptr_t>(
+      getter));
+  // Leaving JavaScript.
+  VMState<EXTERNAL> state(isolate);
+  ExternalCallbackScope call_scope(isolate, getter_address);
+  return getter(property, info);
+}
+
+
+void InvokeAccessorGetterCallback(
+    v8::Local<v8::String> property,
+    const v8::PropertyCallbackInfo<v8::Value>& info,
+    v8::AccessorGetterCallback getter) {
+  // Leaving JavaScript.
+  Isolate* isolate = reinterpret_cast<Isolate*>(info.GetIsolate());
+  Address getter_address = reinterpret_cast<Address>(reinterpret_cast<intptr_t>(
+      getter));
+  VMState<EXTERNAL> state(isolate);
+  ExternalCallbackScope call_scope(isolate, getter_address);
+  return getter(property, info);
+}
+
+
+v8::Handle<v8::Value> InvokeInvocationCallback(
+    const v8::Arguments& args,
+    v8::InvocationCallback callback) {
+  Isolate* isolate = reinterpret_cast<Isolate*>(args.GetIsolate());
+  Address callback_address =
+      reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
+  VMState<EXTERNAL> state(isolate);
+  ExternalCallbackScope call_scope(isolate, callback_address);
+  return callback(args);
+}
+
+
+void InvokeFunctionCallback(const v8::FunctionCallbackInfo<v8::Value>& info,
+                            v8::FunctionCallback callback) {
+  Isolate* isolate = reinterpret_cast<Isolate*>(info.GetIsolate());
+  Address callback_address =
+      reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
+  VMState<EXTERNAL> state(isolate);
+  ExternalCallbackScope call_scope(isolate, callback_address);
+  return callback(info);
+}
+
+
+} }  // namespace v8::internal