Make a few more things classes.

13/parse_driver.cpp

@@ -45,7 +45,7 @@ void file_mgr::print_location(
     stream.write(content + highlight_end, print_end - highlight_end);
 }
 
-bool parse_driver::run_parse() {
+bool parse_driver::operator()() {
     FILE* stream = fopen(file_name.c_str(), "r");
     if(!stream) return false;
     yyscan_t scanner;