bool MethodHandles::is_basic_type_signature(Symbol* sig) {
  assert(vmSymbols::object_signature()->utf8_length() == (int)OBJ_SIG_LEN, "");
  assert(vmSymbols::object_signature()->equals(OBJ_SIG), "");
  const int len = sig->utf8_length();
  for (int i = 0; i < len; i++) {
    switch (sig->byte_at(i)) {
    case 'L':
      // only java/lang/Object is valid here
      if (sig->index_of_at(i, OBJ_SIG, OBJ_SIG_LEN) != i)
        return false;
      i += OBJ_SIG_LEN-1;  //-1 because of i++ in loop
      continue;
    case '(': case ')': case 'V':
    case 'I': case 'J': case 'F': case 'D':
      continue;
    //case '[':
    //case 'Z': case 'B': case 'C': case 'S':
    default:
      return false;
    }
  }
  return true;
}
bool MethodHandles::is_basic_type_signature(Symbol* sig) {
  assert(vmSymbols::object_signature()->utf8_length() == (int)OBJ_SIG_LEN, "");
  assert(vmSymbols::object_signature()->equals(OBJ_SIG), "");
  const int len = sig->utf8_length();
  for (int i = 0; i < len; i++) {
    switch (sig->byte_at(i)) {
    case 'L':
       
      if (sig->index_of_at(i, OBJ_SIG, OBJ_SIG_LEN) != i)
        return false;
      i += OBJ_SIG_LEN-1;   
      continue;
    case '(': case ')': case 'V':
    case 'I': case 'J': case 'F': case 'D':
      continue;
     
     
    default:
      return false;
    }
  }
  return true;
}