77 class WeightClass {
79   WeightClass() : element_type_(ZERO), impl_(0) { }  in WeightClass()  function
82   explicit WeightClass(const W& weight)  in WeightClass()  function
85   WeightClass(const string &weight_type, const string &weight_str);
87   WeightClass(const WeightClass &other) :  in WeightClass()  function
91   WeightClass &operator = (const WeightClass &other) {
113   bool operator == (const WeightClass &other) const {
119   static const WeightClass &Zero() {  in Zero()
120     static WeightClass w(ZERO);  in Zero()
125   static const WeightClass &One() {  in One()
126     static WeightClass w(ONE);  in One()
138   ~WeightClass() { if (impl_) delete impl_; }  in ~WeightClass()
145   explicit WeightClass(ElementType et) : element_type_(et), impl_(0) { }  in WeightClass()  function
147   friend ostream &operator << (ostream &o, const WeightClass &c);
151 const W* WeightClass::GetWeight() const {  in GetWeight()
189 ostream& operator << (ostream &o, const WeightClass &c);