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rlx_cli/
args.rs

1// RLX — versatile ML compiler + runtime.
2// Copyright (C) 2026 Eugene Hauptmann, Nataliya Kosmyna.
3//
4// This program is free software: you can redistribute it and/or modify
5// it under the terms of the GNU General Public License as published by
6// the Free Software Foundation, version 3.
7//
8// This program is distributed in the hope that it will be useful,
9// but WITHOUT ANY WARRANTY; without even the implied warranty of
10// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11// GNU General Public License for more details.
12//
13// You should have received a copy of the GNU General Public License
14// along with this program. If not, see <https://www.gnu.org/licenses/>.
15
16use anyhow::{Result, anyhow};
17
18/// Read the next argv token after a flag (e.g. `--weights path`).
19pub fn req(args: &[String], i: &mut usize) -> Result<String> {
20    let flag = args[*i].clone();
21    *i += 1;
22    let v = args
23        .get(*i)
24        .ok_or_else(|| anyhow!("missing value for {flag}"))?
25        .clone();
26    *i += 1;
27    Ok(v)
28}