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// 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_LITERAL_OBJECTS_INL_H_
#define V8_OBJECTS_LITERAL_OBJECTS_INL_H_
#include "src/objects/literal-objects.h"
#include "src/objects/objects-inl.h"
// Has to be the last include (doesn't have include guards):
#include "src/objects/object-macros.h"
namespace v8 {
namespace internal {
//
// ObjectBoilerplateDescription
//
OBJECT_CONSTRUCTORS_IMPL(ObjectBoilerplateDescription, FixedArray)
CAST_ACCESSOR(ObjectBoilerplateDescription)
SMI_ACCESSORS(ObjectBoilerplateDescription, flags,
FixedArray::OffsetOfElementAt(kLiteralTypeOffset))
Object ObjectBoilerplateDescription::name(int index) const {
Isolate* isolate = GetIsolateForPtrCompr(*this);
return name(isolate, index);
}
Object ObjectBoilerplateDescription::name(Isolate* isolate, int index) const {
// get() already checks for out of bounds access, but we do not want to allow
// access to the last element, if it is the number of properties.
DCHECK_NE(size(), index);
return get(isolate, 2 * index + kDescriptionStartIndex);
}
Object ObjectBoilerplateDescription::value(int index) const {
Isolate* isolate = GetIsolateForPtrCompr(*this);
return value(isolate, index);
}
Object ObjectBoilerplateDescription::value(Isolate* isolate, int index) const {
return get(isolate, 2 * index + 1 + kDescriptionStartIndex);
}
void ObjectBoilerplateDescription::set_key_value(int index, Object key,
Object value) {
DCHECK_LT(index, size());
DCHECK_GE(index, 0);
set(2 * index + kDescriptionStartIndex, key);
set(2 * index + 1 + kDescriptionStartIndex, value);
}
int ObjectBoilerplateDescription::size() const {
DCHECK_EQ(0, (length() - kDescriptionStartIndex -
(this->has_number_of_properties() ? 1 : 0)) %
2);
// Rounding is intended.
return (length() - kDescriptionStartIndex) / 2;
}
bool ObjectBoilerplateDescription::has_number_of_properties() const {
return (length() - kDescriptionStartIndex) % 2 != 0;
}
int ObjectBoilerplateDescription::backing_store_size() const {
if (has_number_of_properties()) {
// If present, the last entry contains the number of properties.
return Smi::ToInt(this->get(length() - 1));
}
// If the number is not given explicitly, we assume there are no
// properties with computed names.
return size();
}
void ObjectBoilerplateDescription::set_backing_store_size(
int backing_store_size) {
DCHECK(has_number_of_properties());
DCHECK_NE(size(), backing_store_size);
CHECK(Smi::IsValid(backing_store_size));
// TODO(ishell): move this value to the header
set(length() - 1, Smi::FromInt(backing_store_size));
}
//
// ClassBoilerplate
//
OBJECT_CONSTRUCTORS_IMPL(ClassBoilerplate, FixedArray)
CAST_ACCESSOR(ClassBoilerplate)
BIT_FIELD_ACCESSORS(ClassBoilerplate, flags, install_class_name_accessor,
ClassBoilerplate::Flags::InstallClassNameAccessorBit)
BIT_FIELD_ACCESSORS(ClassBoilerplate, flags, arguments_count,
ClassBoilerplate::Flags::ArgumentsCountBits)
SMI_ACCESSORS(ClassBoilerplate, flags,
FixedArray::OffsetOfElementAt(kFlagsIndex))
ACCESSORS(ClassBoilerplate, static_properties_template, Object,
FixedArray::OffsetOfElementAt(kClassPropertiesTemplateIndex))
ACCESSORS(ClassBoilerplate, static_elements_template, Object,
FixedArray::OffsetOfElementAt(kClassElementsTemplateIndex))
ACCESSORS(ClassBoilerplate, static_computed_properties, FixedArray,
FixedArray::OffsetOfElementAt(kClassComputedPropertiesIndex))
ACCESSORS(ClassBoilerplate, instance_properties_template, Object,
FixedArray::OffsetOfElementAt(kPrototypePropertiesTemplateIndex))
ACCESSORS(ClassBoilerplate, instance_elements_template, Object,
FixedArray::OffsetOfElementAt(kPrototypeElementsTemplateIndex))
ACCESSORS(ClassBoilerplate, instance_computed_properties, FixedArray,
FixedArray::OffsetOfElementAt(kPrototypeComputedPropertiesIndex))
//
// ArrayBoilerplateDescription
//
OBJECT_CONSTRUCTORS_IMPL(ArrayBoilerplateDescription, Struct)
CAST_ACCESSOR(ArrayBoilerplateDescription)
SMI_ACCESSORS(ArrayBoilerplateDescription, flags, kFlagsOffset)
ACCESSORS(ArrayBoilerplateDescription, constant_elements, FixedArrayBase,
kConstantElementsOffset)
ElementsKind ArrayBoilerplateDescription::elements_kind() const {
return static_cast<ElementsKind>(flags());
}
void ArrayBoilerplateDescription::set_elements_kind(ElementsKind kind) {
set_flags(kind);
}
bool ArrayBoilerplateDescription::is_empty() const {
return constant_elements().length() == 0;
}
} // namespace internal
} // namespace v8
#include "src/objects/object-macros-undef.h"
#endif // V8_OBJECTS_LITERAL_OBJECTS_INL_H_
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