50   Label() : position_(0) {}  in Label()
61     return IsBound() ? -position_ - kPointerSize : position_ - kPointerSize;  in Position()
66     return position_ - kWordSize;  in LinkPosition()
69   bool IsBound() const { return position_ < 0; }  in IsBound()
70   bool IsUnused() const { return position_ == 0; }  in IsUnused()
71   bool IsLinked() const { return position_ > 0; }  in IsLinked()
74   int position_;
77     position_ = 0;  in Reinitialize()
82     position_ = -position - kPointerSize;  in BindTo()
88     position_ = position + kPointerSize;  in LinkTo()
110   int position_;  variable
115   int position() const { return position_; }  in position()
116   void set_position(int position) { position_ = position; }  in set_position()