basetype_parse double_parse elem_parse ensure_cbrace ensure_cparen ensure_end_input ensure_obrace ensure_oparen p_cbrace p_cbracket p_comma p_cparen p_delimchar p_obrace p_obracket p_oparen p_whitespace set_parse span_parse spanset_parse tbox_parse tcontseq_parse tdiscseq_parse temporal_parse timestamp_parse tinstant_parse tsequenceset_parse

ensure_oparen() bool ensure_oparen ( const char **  str, const char *  type  ) Ensure to input an opening parenthesis from the buffer.