...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::parser::_report_error
// In header: <boost/parser/parser_fwd.hpp> template<std::forward_iterator I, typename Context> void _report_error(Context const & context, std::string_view message, I location);