Function reader

extern/btyacc/reader.c:1881–1895

extern int read_errs;

void reader() {
  write_section("banner");
  create_symbol_table();
  read_declarations();
  read_grammar();
  if(read_errs) done(1);
  free_symbol_table();
  free_tags();
  pack_names();
  check_symbols();
  pack_symbols();
  pack_grammar();
  free_symbols();
  print_grammar();
}