vendor/winnow-0.4.7/examples/json/bench.rs

   1 use winnow::Partial;
   2
   3 mod json;
   4 mod parser;
   5 mod parser_dispatch;
   6 mod parser_partial;
   7
   8 fn json_bench(c: &mut criterion::Criterion) {
   9     let data = [("small", SMALL), ("canada", CANADA)];
  10     let mut group = c.benchmark_group("json");
  11     for (name, sample) in data {
  12         let len = sample.len();
  13         group.throughput(criterion::Throughput::Bytes(len as u64));
  14
  15         group.bench_with_input(criterion::BenchmarkId::new("basic", name), &len, |b, _| {
  16             type Error<'i> = winnow::error::Error<parser::Stream<'i>>;
  17
  18             b.iter(|| parser::json::<Error>(sample).unwrap());
  19         });
  20         group.bench_with_input(
  21             criterion::BenchmarkId::new("verbose", name),
  22             &len,
  23             |b, _| {
  24                 type Error<'i> = winnow::error::VerboseError<parser::Stream<'i>>;
  25
  26                 b.iter(|| parser::json::<Error>(sample).unwrap());
  27             },
  28         );
  29         group.bench_with_input(
  30             criterion::BenchmarkId::new("dispatch", name),
  31             &len,
  32             |b, _| {
  33                 type Error<'i> = winnow::error::Error<parser::Stream<'i>>;
  34
  35                 b.iter(|| parser_dispatch::json::<Error>(sample).unwrap());
  36             },
  37         );
  38         group.bench_with_input(
  39             criterion::BenchmarkId::new("streaming", name),
  40             &len,
  41             |b, _| {
  42                 type Error<'i> = winnow::error::Error<parser_partial::Stream<'i>>;
  43
  44                 b.iter(|| parser_partial::json::<Error>(Partial::new(sample)).unwrap());
  45             },
  46         );
  47     }
  48     group.finish();
  49 }
  50
  51 const SMALL: &str = "  { \"a\"\t: 42,
  52   \"b\": [ \"x\", \"y\", 12 ,\"\\u2014\", \"\\uD83D\\uDE10\"] ,
  53   \"c\": { \"hello\" : \"world\"
  54   }
  55   }  ";
  56
  57 const CANADA: &str = include_str!("../../third_party/nativejson-benchmark/data/canada.json");
  58
  59 criterion::criterion_group!(benches, json_bench,);
  60 criterion::criterion_main!(benches);