OpenTally/src/parser/blt.rs

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/* OpenTally: Open-source election vote counting
* Copyright © 2021 Lee Yingtong Li (RunasSudo)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#![allow(missing_docs)]
use pest::iterators::Pair;
#[derive(Parser)]
#[grammar = "parser/blt.pest"]
pub struct BLTParser;
/// Convert the specified [Pair<Rule>] into a &str
pub fn unwrap_string(string: Pair<Rule>) -> &str {
match string.as_rule() {
Rule::string => {
let string = string.into_inner().next().unwrap();
match string.as_rule() {
Rule::raw_string => {
return string.as_str();
}
Rule::quoted_string => {
let string = string.as_str();
return &string[1..string.len()-1];
}
_ => unreachable!()
}
}
_ => panic!("Non-string passed to unwrap_string")
}
}