grex 1.4.6

grex generates regular expressions from user-provided test cases.
Documentation 
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/*
 * Copyright © 2019-today Peter M. Stahl pemistahl@gmail.com
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either expressed or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

use std::fmt::{Display, Formatter, Result};

#[derive(Clone, Debug, Eq, PartialEq)]
pub(crate) enum Quantifier {
    KleeneStar,
    QuestionMark,
}

impl Display for Quantifier {
    fn fmt(&self, f: &mut Formatter<'_>) -> Result {
        write!(
            f,
            "{}",
            match self {
                Quantifier::KleeneStar => '*',
                Quantifier::QuestionMark => '?',
            }
        )
    }
}