19                 static void set(Property const &prop,std::ios_base &ios)  in set()  argument
22                     if(ios.pword(id)==0) {  in set()
23                         ios.pword(id) = new Property(prop);  in set()
24                         ios.register_callback(callback,id);  in set()
26                     else if(ios.pword(id)==invalid) {  in set()
27                         ios.pword(id) = new Property(prop);  in set()
30                         *static_cast<Property *>(ios.pword(id))=prop;  in set()
34                 static Property &get(std::ios_base &ios)  in get()  argument
37                     if(!has(ios))  in get()
38                         set(Property(),ios);  in get()
39                     return *static_cast<Property *>(ios.pword(id));  in get()
42                 static bool has(std::ios_base &ios)  in has()  argument
45                     if(ios.pword(id)==0 || ios.pword(id)==invalid)  in has()
50                 static void unset(std::ios_base &ios)  in unset()  argument
52                     if(has(ios)) {  in unset()
54                         Property *p=static_cast<Property *>(ios.pword(id));  in unset()
56                         ios.pword(id)=invalid;  in unset()
66                 static void callback(std::ios_base::event ev,std::ios_base &ios,int id)  in callback()  argument
70                         if(!has(ios))  in callback()
72                         delete reinterpret_cast<Property *>(ios.pword(id));  in callback()
75                         if(ios.pword(id)==invalid || ios.pword(id)==0)  in callback()
77                         ios.pword(id)=new Property(*reinterpret_cast<Property *>(ios.pword(id)));  in callback()
80                         if(ios.pword(id)==invalid || ios.pword(id)==0)  in callback()
82                         reinterpret_cast<Property *>(ios.pword(id))->on_imbue();   in callback()