Enum flags

include/boost/parser/parser_fwd.hpp:77–82

        struct nope;

        enum class flags : unsigned int {
            gen_attrs = 1 << 0,
            use_skip = 1 << 1,
            trace = 1 << 2,
            in_apply_parser = 1 << 3
        };

        struct symbol_table_trie_element
        {