int Compile_eval_cmd(byte[] fmt, int fmt_len, int eval_lhs_bgn, List_adp list) {
int eval_lhs_end = Bry_finder.Find_fwd(fmt, char_eval_end, eval_lhs_bgn + Int_.Const_dlm_len, fmt_len); if (eval_lhs_end == Bry_.NotFound) throw Err_mgr._.fmt_(GRP_KEY, "eval_lhs_end_invalid", "could not find eval_lhs_end: ~{0}", String_.new_u8(fmt, eval_lhs_bgn, fmt_len));
byte[] eval_dlm = Bry_.Mid(fmt, eval_lhs_bgn , eval_lhs_end + Int_.Const_dlm_len);
int eval_rhs_bgn = Bry_finder.Find_fwd(fmt, eval_dlm , eval_lhs_end + Int_.Const_dlm_len, fmt_len); if (eval_rhs_bgn == Bry_.NotFound) throw Err_mgr._.fmt_(GRP_KEY, "eval_rhs_bgn_invalid", "could not find eval_rhs_bgn: ~{0}", String_.new_u8(fmt, eval_lhs_end, fmt_len));
byte[] eval_cmd = Bry_.Mid(fmt, eval_lhs_end + Int_.Const_dlm_len, eval_rhs_bgn);
byte[] eval_rslt = eval_mgr.Eval(eval_cmd);
int eval_rhs_end = eval_rhs_bgn + Int_.Const_dlm_len + eval_dlm.length;
if (eval_rslt == null) eval_rslt = Bry_.Mid(fmt, eval_lhs_bgn - 2, eval_rhs_end); // not found; return original argument
list.Add(Bry_fmtr_itm.dat_bry_(eval_rslt));
return eval_rhs_end;
}
