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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_NAME_INL_H_
#define V8_OBJECTS_NAME_INL_H_
#include "src/base/logging.h"
#include "src/heap/heap-write-barrier-inl.h"
#include "src/objects/map-inl.h"
#include "src/objects/name.h"
#include "src/objects/primitive-heap-object-inl.h"
#include "src/objects/string-inl.h"
// Has to be the last include (doesn't have include guards):
#include "src/objects/object-macros.h"
namespace v8 {
namespace internal {
#include "torque-generated/src/objects/name-tq-inl.inc"
TQ_OBJECT_CONSTRUCTORS_IMPL(Name)
TQ_OBJECT_CONSTRUCTORS_IMPL(Symbol)
BIT_FIELD_ACCESSORS(Symbol, flags, is_private, Symbol::IsPrivateBit)
BIT_FIELD_ACCESSORS(Symbol, flags, is_well_known_symbol,
Symbol::IsWellKnownSymbolBit)
BIT_FIELD_ACCESSORS(Symbol, flags, is_in_public_symbol_table,
Symbol::IsInPublicSymbolTableBit)
BIT_FIELD_ACCESSORS(Symbol, flags, is_interesting_symbol,
Symbol::IsInterestingSymbolBit)
bool Symbol::is_private_brand() const {
bool value = Symbol::IsPrivateBrandBit::decode(flags());
DCHECK_IMPLIES(value, is_private());
return value;
}
void Symbol::set_is_private_brand() {
set_flags(Symbol::IsPrivateBit::update(flags(), true));
set_flags(Symbol::IsPrivateNameBit::update(flags(), true));
set_flags(Symbol::IsPrivateBrandBit::update(flags(), true));
}
bool Symbol::is_private_name() const {
bool value = Symbol::IsPrivateNameBit::decode(flags());
DCHECK_IMPLIES(value, is_private());
return value;
}
void Symbol::set_is_private_name() {
// TODO(gsathya): Re-order the bits to have these next to each other
// and just do the bit shifts once.
set_flags(Symbol::IsPrivateBit::update(flags(), true));
set_flags(Symbol::IsPrivateNameBit::update(flags(), true));
}
DEF_GETTER(Name, IsUniqueName, bool) {
uint32_t type = map(cage_base).instance_type();
bool result = (type & (kIsNotStringMask | kIsNotInternalizedMask)) !=
(kStringTag | kNotInternalizedTag);
SLOW_DCHECK(result == HeapObject::IsUniqueName());
DCHECK_IMPLIES(result, HasHashCode());
return result;
}
bool Name::Equals(Name other) {
if (other == *this) return true;
if ((this->IsInternalizedString() && other.IsInternalizedString()) ||
this->IsSymbol() || other.IsSymbol()) {
return false;
}
return String::cast(*this).SlowEquals(String::cast(other));
}
bool Name::Equals(Isolate* isolate, Handle<Name> one, Handle<Name> two) {
if (one.is_identical_to(two)) return true;
if ((one->IsInternalizedString() && two->IsInternalizedString()) ||
one->IsSymbol() || two->IsSymbol()) {
return false;
}
return String::SlowEquals(isolate, Handle<String>::cast(one),
Handle<String>::cast(two));
}
bool Name::IsHashFieldComputed(uint32_t raw_hash_field) {
return (raw_hash_field & kHashNotComputedMask) == 0;
}
bool Name::HasHashCode() const { return IsHashFieldComputed(raw_hash_field()); }
uint32_t Name::EnsureHash() {
// Fast case: has hash code already been computed?
uint32_t field = raw_hash_field();
if (IsHashFieldComputed(field)) return field >> kHashShift;
// Slow case: compute hash code and set it. Has to be a string.
return String::cast(*this).ComputeAndSetHash();
}
uint32_t Name::EnsureHash(const SharedStringAccessGuardIfNeeded& access_guard) {
// Fast case: has hash code already been computed?
uint32_t field = raw_hash_field();
if (IsHashFieldComputed(field)) return field >> kHashShift;
// Slow case: compute hash code and set it. Has to be a string.
return String::cast(*this).ComputeAndSetHash(access_guard);
}
uint32_t Name::hash() const {
uint32_t field = raw_hash_field();
DCHECK(IsHashFieldComputed(field));
return field >> kHashShift;
}
DEF_GETTER(Name, IsInterestingSymbol, bool) {
return IsSymbol(cage_base) && Symbol::cast(*this).is_interesting_symbol();
}
DEF_GETTER(Name, IsPrivate, bool) {
return this->IsSymbol(cage_base) && Symbol::cast(*this).is_private();
}
DEF_GETTER(Name, IsPrivateName, bool) {
bool is_private_name =
this->IsSymbol(cage_base) && Symbol::cast(*this).is_private_name();
DCHECK_IMPLIES(is_private_name, IsPrivate());
return is_private_name;
}
DEF_GETTER(Name, IsPrivateBrand, bool) {
bool is_private_brand =
this->IsSymbol(cage_base) && Symbol::cast(*this).is_private_brand();
DCHECK_IMPLIES(is_private_brand, IsPrivateName());
return is_private_brand;
}
bool Name::AsArrayIndex(uint32_t* index) {
return IsString() && String::cast(*this).AsArrayIndex(index);
}
bool Name::AsIntegerIndex(size_t* index) {
return IsString() && String::cast(*this).AsIntegerIndex(index);
}
// static
bool Name::ContainsCachedArrayIndex(uint32_t raw_hash_field) {
return (raw_hash_field & Name::kDoesNotContainCachedArrayIndexMask) == 0;
}
} // namespace internal
} // namespace v8
#include "src/objects/object-macros-undef.h"
#endif // V8_OBJECTS_NAME_INL_H_
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