Introduce lambda expressions.

1 files changed, 55 insertions, 0 deletions

diff --git a/chomp-bench/benches/arith/main.rs b/chomp-bench/benches/arith/main.rs
new file mode 100644
index 0000000..0e4e3f4
--- /dev/null
+++ b/chomp-bench/benches/arith/main.rs
@@ -0,0 +1,55 @@
+use chewed::{IterWrapper, Parser};
+use chomp_bench::arith::*;
+use criterion::{
+    criterion_group, criterion_main, AxisScale, BenchmarkId, Criterion, PlotConfiguration,
+    Throughput,
+};
+
+const INPUTS: &[&str] = &[
+    include_str!("data/134.arith"),
+    include_str!("data/262.arith"),
+    include_str!("data/556.arith"),
+    include_str!("data/1066.arith"),
+    include_str!("data/2180.arith"),
+    include_str!("data/4371.arith"),
+    include_str!("data/8380.arith"),
+    include_str!("data/17850.arith"),
+    include_str!("data/35389.arith"),
+];
+
+fn parse_chewed(input: &str) -> i64 {
+    IterWrapper::new(input.chars())
+        .parse::<nibble::Ast>()
+        .unwrap()
+        .into()
+}
+
+fn parse_handwritten(input: &str) -> i64 {
+    parse_expr(&mut IterWrapper::new(input.chars())).unwrap()
+}
+
+fn parse_lalrpop(parser: &lalr::ExpressionParser, input: &str) -> i64 {
+    parser.parse(input).unwrap()
+}
+
+fn bench_parse(c: &mut Criterion) {
+    let lalr_parser = lalr::ExpressionParser::new();
+    let plot_config = PlotConfiguration::default().summary_scale(AxisScale::Logarithmic);
+    let mut group = c.benchmark_group("Arith");
+    group.plot_config(plot_config);
+    for (i, input) in INPUTS.iter().enumerate() {
+        group.throughput(Throughput::Bytes(input.len() as u64));
+        group.bench_with_input(BenchmarkId::new("Chewed", i), *input, |b, i| {
+            b.iter(|| parse_chewed(i))
+        });
+        group.bench_with_input(BenchmarkId::new("Handwritten", i), *input, |b, i| {
+            b.iter(|| parse_handwritten(i))
+        });
+        group.bench_with_input(BenchmarkId::new("LALRPOP", i), *input, |b, i| {
+            b.iter(|| parse_lalrpop(&lalr_parser, i))
+        });
+    }
+}
+
+criterion_group!(benches, bench_parse);
+criterion_main!(benches);