android/vendor/winnow-0.4.1/examples/ini/bench.rs

use winnow::multi::many0;
use winnow::prelude::*;

mod parser;
mod parser_str;

fn bench_ini(c: &mut criterion::Criterion) {
    let str = "[owner]
name=John Doe
organization=Acme Widgets Inc.

[database]
server=192.0.2.62
port=143
file=payroll.dat
\0";

    let mut group = c.benchmark_group("ini");
    group.throughput(criterion::Throughput::Bytes(str.len() as u64));
    group.bench_function(criterion::BenchmarkId::new("bytes", str.len()), |b| {
        b.iter(|| parser::categories(str.as_bytes()).unwrap());
    });
    group.bench_function(criterion::BenchmarkId::new("str", str.len()), |b| {
        b.iter(|| parser_str::categories(str).unwrap())
    });
}

fn bench_ini_keys_and_values(c: &mut criterion::Criterion) {
    let str = "server=192.0.2.62
port=143
file=payroll.dat
\0";

    fn acc(i: parser::Stream<'_>) -> IResult<parser::Stream<'_>, Vec<(&str, &str)>> {
        many0(parser::key_value).parse_next(i)
    }

    let mut group = c.benchmark_group("ini keys and values");
    group.throughput(criterion::Throughput::Bytes(str.len() as u64));
    group.bench_function(criterion::BenchmarkId::new("bytes", str.len()), |b| {
        b.iter(|| acc(str.as_bytes()).unwrap());
    });
}

fn bench_ini_key_value(c: &mut criterion::Criterion) {
    let str = "server=192.0.2.62\n";

    let mut group = c.benchmark_group("ini key value");
    group.throughput(criterion::Throughput::Bytes(str.len() as u64));
    group.bench_function(criterion::BenchmarkId::new("bytes", str.len()), |b| {
        b.iter(|| parser::key_value(str.as_bytes()).unwrap());
    });
}

criterion::criterion_group!(
    benches,
    bench_ini,
    bench_ini_keys_and_values,
    bench_ini_key_value
);
criterion::criterion_main!(benches);