swc/crates/swc_ecma_parser/benches/lexer.rs

extern crate swc_node_base;

use criterion::{black_box, criterion_group, criterion_main, Bencher, Criterion};
use swc_common::FileName;
use swc_ecma_parser::{lexer::Lexer, StringInput, Syntax};

fn bench_module(b: &mut Bencher, syntax: Syntax, src: &'static str) {
    let _ = ::testing::run_test(false, |cm, _| {
        let fm = cm.new_source_file(FileName::Anon, src.into());

        b.iter(|| {
            let lexer = Lexer::new(syntax, Default::default(), StringInput::from(&*fm), None);
            for t in lexer {
                black_box(t);
            }
        });
        Ok(())
    });
}

fn bench_files(c: &mut Criterion) {
    c.bench_function("colors", |b| {
        // Copied from ratel-rust
        bench_module(b, Default::default(), include_str!("../colors.js"))
    });

    c.bench_function("angular", |b| {
        bench_module(
            b,
            Default::default(),
            include_str!("./files/angular-1.2.5.js"),
        )
    });

    c.bench_function("backbone", |b| {
        bench_module(
            b,
            Default::default(),
            include_str!("./files/backbone-1.1.0.js"),
        )
    });

    c.bench_function("jquery", |b| {
        bench_module(
            b,
            Default::default(),
            include_str!("./files/jquery-1.9.1.js"),
        )
    });

    c.bench_function("jquery mobile", |b| {
        bench_module(
            b,
            Default::default(),
            include_str!("./files/jquery.mobile-1.4.2.js"),
        )
    });
    c.bench_function("mootools", |b| {
        bench_module(
            b,
            Default::default(),
            include_str!("./files/mootools-1.4.5.js"),
        )
    });

    c.bench_function("underscore", |b| {
        bench_module(
            b,
            Default::default(),
            include_str!("./files/underscore-1.5.2.js"),
        )
    });

    c.bench_function("three", |b| {
        bench_module(
            b,
            Default::default(),
            include_str!("./files/three-0.138.3.js"),
        )
    });

    c.bench_function("yui", |b| {
        bench_module(b, Default::default(), include_str!("./files/yui-3.12.0.js"))
    });
}

criterion_group!(benches, bench_files);
criterion_main!(benches);