36     void enter(std::string name, T item);
37     void leave(std::string name);
39     T lookup(std::string name) const;
48 void Scope<T>::enter(std::string name, T item) {  in enter()  argument
49     auto it = mScopeContents.find(name);  in enter()
52         LOG(WARNING) << "Redeclaring variable in scope: " << name;  in enter()
56     mScopeContents[name] = item;  in enter()
60 void Scope<T>::leave(std::string name) {  in leave()  argument
61     auto it = mScopeContents.find(name);  in leave()
64         LOG(WARNING) << "Tried to undefined already undefined value in scope: " << name;  in leave()
72 T Scope<T>::lookup(std::string name) const {  in lookup()  argument
73     auto it = mScopeContents.find(name);  in lookup()