22 template<typename T> class Regexp::Walker {
24   Walker();
25   virtual ~Walker();
95   DISALLOW_EVIL_CONSTRUCTORS(Walker);
98 template<typename T> T Regexp::Walker<T>::PreVisit(Regexp* re,  in PreVisit()
104 template<typename T> T Regexp::Walker<T>::PostVisit(Regexp* re,  in PostVisit()
112 template<typename T> T Regexp::Walker<T>::Copy(T arg) {  in Copy()
132 template<typename T> Regexp::Walker<T>::Walker() {  in Walker()  function
137 template<typename T> Regexp::Walker<T>::~Walker() {  in ~Walker()
145 template<typename T> void Regexp::Walker<T>::Reset() {  in Reset()
155 template<typename T> T Regexp::Walker<T>::WalkInternal(Regexp* re, T top_arg,  in WalkInternal()
227 template<typename T> T Regexp::Walker<T>::Walk(Regexp* re, T top_arg) {  in Walk()
236 template<typename T> T Regexp::Walker<T>::WalkExponential(Regexp* re, T top_arg,  in WalkExponential()