protected virtual member function
<locale>

std::codecvt::do_in

result do_in (state_type& state, 
  const extern_type* from, const extern_type* from_end, const extern_type*& from_next,
        intern_type* to, intern_type* to_limit, intern_type*& to_next) const;
Translate in characters [virtual]
Virtual protected member function called by codecvt::in to convert sequences in.

Polymorphic derived classes can overwrite the behavior of this function.

See codecvt::in for its default behavior in codecvt.

See also

codecvt::in
Translate in characters (public member function )

C++