18   ZoneHandleSet() : data_(kEmptyTag) {}  in ZoneHandleSet()
20       : data_(handle.address() | kSingletonTag) {  in ZoneHandleSet()
24   bool is_empty() const { return data_ == kEmptyTag; }  in is_empty()
27     if ((data_ & kTagMask) == kEmptyTag) return 0;  in size()
28     if ((data_ & kTagMask) == kSingletonTag) return 1;  in size()
33     DCHECK_NE(kEmptyTag, data_ & kTagMask);  in at()
34     if ((data_ & kTagMask) == kSingletonTag) {  in at()
46     if ((data_ & kTagMask) == kEmptyTag) {  in insert()
47       data_ = reinterpret_cast<Address>(value) | kSingletonTag;  in insert()
48     } else if ((data_ & kTagMask) == kSingletonTag) {  in insert()
59       data_ = reinterpret_cast<Address>(list) | kListTag;  in insert()
61       DCHECK_EQ(kListTag, data_ & kTagMask);  in insert()
80       data_ = reinterpret_cast<Address>(new_list) | kListTag;  in insert()
85     if (data_ == other.data_) return true;  in contains()
86     if (data_ == kEmptyTag) return false;  in contains()
87     if (other.data_ == kEmptyTag) return true;  in contains()
88     if ((data_ & kTagMask) == kSingletonTag) return false;  in contains()
89     DCHECK_EQ(kListTag, data_ & kTagMask);  in contains()
91     if ((other.data_ & kTagMask) == kSingletonTag) {  in contains()
95     DCHECK_EQ(kListTag, other.data_ & kTagMask);  in contains()
107     if (data_ == kEmptyTag) return false;  in contains()
109     if ((data_ & kTagMask) == kSingletonTag) {  in contains()
112     DCHECK_EQ(kListTag, data_ & kTagMask);  in contains()
131     if (lhs.data_ == rhs.data_) return true;
132     if ((lhs.data_ & kTagMask) == kListTag &&
133         (rhs.data_ & kTagMask) == kListTag) {
152     return static_cast<size_t>(set.data_);  in hash_value()
163     DCHECK_EQ(kListTag, data_ & kTagMask);  in list()
164     return reinterpret_cast<List const*>(data_ - kListTag);  in list()
168     DCHECK_EQ(kSingletonTag, data_ & kTagMask);  in singleton()
169     return reinterpret_cast<Address*>(data_ - kSingletonTag);  in singleton()
181   Address data_;  variable