16 class Edge;  variable
60   typedef std::deque<Edge*> Context;
62   Edge* Parent() { return context_.empty() ? 0 : context_.front(); }  in Parent()
63   void Enter(Edge* e) { return context_.push_front(e); }  in Enter()
83 class Edge {
88   virtual ~Edge() {}  in ~Edge()
106 class Value : public Edge {
121 class PtrEdge : public Edge {
124   Edge* ptr() { return ptr_; }  in ptr()
126   PtrEdge(Edge* ptr) : ptr_(ptr) {  in PtrEdge()
130   Edge* ptr_;
135   RawPtr(Edge* ptr, bool is_ref_type)  in RawPtr()
156   explicit RefPtr(Edge* ptr) : PtrEdge(ptr) { }  in RefPtr()
168   explicit UniquePtr(Edge* ptr) : PtrEdge(ptr) { }  in UniquePtr()
180   explicit Member(Edge* ptr) : PtrEdge(ptr) { }  in Member()
192   explicit WeakMember(Edge* ptr) : PtrEdge(ptr) { }  in WeakMember()
204   explicit Persistent(Edge* ptr) : PtrEdge(ptr) { }  in Persistent()
215   explicit CrossThreadPersistent(Edge* ptr) : PtrEdge(ptr) { }  in CrossThreadPersistent()
226 class Collection : public Edge {
228   typedef std::vector<Edge*> Members;
272 class Iterator : public Edge {