| // 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/objects/name.h" |
| |
| #include "src/heap/heap-inl.h" |
| #include "src/heap/heap-write-barrier.h" |
| #include "src/objects/map-inl.h" |
| |
| // Has to be the last include (doesn't have include guards): |
| #include "src/objects/object-macros.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| OBJECT_CONSTRUCTORS_IMPL(Name, HeapObject) |
| OBJECT_CONSTRUCTORS_IMPL(Symbol, Name) |
| |
| CAST_ACCESSOR2(Name) |
| CAST_ACCESSOR2(Symbol) |
| |
| ACCESSORS(Symbol, name, Object, kNameOffset) |
| INT_ACCESSORS(Symbol, flags, kFlagsOffset) |
| 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_public, Symbol::IsPublicBit) |
| BIT_FIELD_ACCESSORS(Symbol, flags, is_interesting_symbol, |
| Symbol::IsInterestingSymbolBit) |
| |
| 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)); |
| } |
| |
| bool Name::IsUniqueName() const { |
| uint32_t type = map()->instance_type(); |
| return (type & (kIsNotStringMask | kIsNotInternalizedMask)) != |
| (kStringTag | kNotInternalizedTag); |
| } |
| |
| uint32_t Name::hash_field() { |
| return READ_UINT32_FIELD(this, kHashFieldOffset); |
| } |
| |
| void Name::set_hash_field(uint32_t value) { |
| WRITE_UINT32_FIELD(this, kHashFieldOffset, value); |
| } |
| |
| 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 field) { |
| return (field & kHashNotComputedMask) == 0; |
| } |
| |
| bool Name::HasHashCode() { return IsHashFieldComputed(hash_field()); } |
| |
| uint32_t Name::Hash() { |
| // Fast case: has hash code already been computed? |
| uint32_t field = hash_field(); |
| if (IsHashFieldComputed(field)) return field >> kHashShift; |
| // Slow case: compute hash code and set it. Has to be a string. |
| // Also the string must be writable, because read-only strings will have their |
| // hash values precomputed. |
| return String::cast(*this)->ComputeAndSetHash( |
| Heap::FromWritableHeapObject(this)->isolate()); |
| } |
| |
| bool Name::IsInterestingSymbol() const { |
| return IsSymbol() && Symbol::cast(*this)->is_interesting_symbol(); |
| } |
| |
| bool Name::IsPrivate() { |
| return this->IsSymbol() && Symbol::cast(*this)->is_private(); |
| } |
| |
| bool Name::IsPrivateName() { |
| bool is_private_name = |
| this->IsSymbol() && Symbol::cast(*this)->is_private_name(); |
| DCHECK_IMPLIES(is_private_name, IsPrivate()); |
| return is_private_name; |
| } |
| |
| bool Name::AsArrayIndex(uint32_t* index) { |
| return IsString() && String::cast(*this)->AsArrayIndex(index); |
| } |
| |
| // static |
| bool Name::ContainsCachedArrayIndex(uint32_t hash) { |
| return (hash & Name::kDoesNotContainCachedArrayIndexMask) == 0; |
| } |
| |
| } // namespace internal |
| } // namespace v8 |
| |
| #include "src/objects/object-macros-undef.h" |
| |
| #endif // V8_OBJECTS_NAME_INL_H_ |