//-*-c++-*- extern VALUE r!class_varname!; VALUE cxx2ruby(!c_class_name!* instance, bool free = false); bool is_!class_varname!(VALUE val); !c_class_name!* ruby2!class_varcname!Ptr(VALUE rval, int argn = -1); !c_class_name!& ruby2!class_varcname!(VALUE rval, int argn = -1);