serde_bindgen_core_derive/
utils.rs

1// This file is part of the serde-bindgen-core libraries
2// Copyright (C) 2022  Altronix Corp. <thomas.chiantia@gmail.com>
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, either version 3 of the License, or
7// (at your option) any later version.
8//
9// This program is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12// GNU General Public License for more details.
13//
14// You should have received a copy of the GNU General Public License
15// along with this program.  If not, see <https://www.gnu.org/licenses/>.
16
17// @author Thomas Chiantia <thomas.chiantia@gmail.com>
18// @date 2022
19
20use syn::parse::{Parse, ParseStream, Peek, Result};
21
22pub fn maybe<T: Peek, R: Parse>(token: T, input: &mut ParseStream) -> Result<Option<R>> {
23    if input.peek(token) {
24        Ok(Some(input.parse()?))
25    } else {
26        Ok(None)
27    }
28}
29
30
serde_bindgen_core_derive/utils.rs

serde_bindgen_core_derive/
utils.rs
