src/v8/src/objects/map-inl.h

// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef V8_OBJECTS_MAP_INL_H_
#define V8_OBJECTS_MAP_INL_H_

#include "src/field-type.h"
#include "src/objects/map.h"

// Has to be the last include (doesn't have include guards):
#include "src/objects/object-macros.h"

namespace v8 {
namespace internal {

CAST_ACCESSOR(Map)

InterceptorInfo* Map::GetNamedInterceptor() {
  DCHECK(has_named_interceptor());
  FunctionTemplateInfo* info = GetFunctionTemplateInfo();
  return InterceptorInfo::cast(info->named_property_handler());
}

InterceptorInfo* Map::GetIndexedInterceptor() {
  DCHECK(has_indexed_interceptor());
  FunctionTemplateInfo* info = GetFunctionTemplateInfo();
  return InterceptorInfo::cast(info->indexed_property_handler());
}

bool Map::IsInplaceGeneralizableField(PropertyConstness constness,
                                      Representation representation,
                                      FieldType* field_type) {
  if (FLAG_track_constant_fields && FLAG_modify_map_inplace &&
      (constness == kConst)) {
    // kConst -> kMutable field generalization may happen in-place.
    return true;
  }
  if (representation.IsHeapObject() && !field_type->IsAny()) {
    return true;
  }
  return false;
}

int NormalizedMapCache::GetIndex(Handle<Map> map) {
  return map->Hash() % NormalizedMapCache::kEntries;
}

bool NormalizedMapCache::IsNormalizedMapCache(const HeapObject* obj) {
  if (!obj->IsFixedArray()) return false;
  if (FixedArray::cast(obj)->length() != NormalizedMapCache::kEntries) {
    return false;
  }
#ifdef VERIFY_HEAP
  if (FLAG_verify_heap) {
    reinterpret_cast<NormalizedMapCache*>(const_cast<HeapObject*>(obj))
        ->NormalizedMapCacheVerify();
  }
#endif
  return true;
}

}  // namespace internal
}  // namespace v8

#include "src/objects/object-macros-undef.h"

#endif  // V8_OBJECTS_MAP_INL_H_