// Copyright 2019 LEXUGE
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

// use(s)
use {
    criterion::{criterion_group, criterion_main, Criterion},
    lib_xalg::{
        formula::{OperatorFlag, OperatorFlag::*},
        generate,
    },
    std::collections::HashSet,
};

fn bench_generate(c: &mut Criterion) {
    c.bench_function("generate", |b| {
        b.iter(|| {
            generate(
                10,
                10,
                20,
                &[Add, Sub, Mul, Div, Pow]
                    .iter()
                    .copied()
                    .collect::<HashSet<OperatorFlag>>(),
            )
            .unwrap();
        })
    });
}

fn bench_export(c: &mut Criterion) {
    c.bench_function("export", |b| {
        b.iter(|| {
            generate(
                10,
                10,
                20,
                &[Add, Sub, Mul, Div, Pow]
                    .iter()
                    .copied()
                    .collect::<HashSet<OperatorFlag>>(),
            )
            .unwrap()
            .to_string();
        })
    });
}

criterion_group!(benches, bench_generate, bench_export);
criterion_main!(benches);