Function rbs_parser_new 

pub unsafe extern "C" fn rbs_parser_new(
    string: rbs_string_t,
    encoding: *const rbs_encoding_t,
    start_pos: c_int,
    end_pos: c_int,
) -> *mut rbs_parser_t

Allocate new rbs_parser_t object.

rbs_parser_new(buffer, string, encoding, 0, 1);