mirror of
https://github.com/swc-project/swc.git
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e46a842e99
swc_ecma_parser: - Implement parsing of private properties in object literals. swc_ecma_transforms_base: - `fixer`: Handle `const [a = (b, c)]`. swc_ecma_transforms_compat: - `class_properties`: Support ergonomic brand checks. (#2064) swc_ecma_transforms_proposal: - Implement ergonomic brand checks for private fields. (#2064)
136 lines
3.3 KiB
Rust
136 lines
3.3 KiB
Rust
#![feature(test)]
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#![feature(bench_black_box)]
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extern crate test;
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use std::{hint::black_box, io::stderr, sync::Arc};
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use swc_babel_compat::babelify::{Babelify, Context};
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use swc_common::{errors::Handler, FileName, FilePathMapping, SourceFile, SourceMap};
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use swc_ecma_ast::Program;
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use swc_ecma_parser::{JscTarget, Syntax};
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use swc_ecma_transforms::{compat::es2020, typescript};
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use swc_ecma_visit::FoldWith;
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use test::Bencher;
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static SOURCE: &str = include_str!("assets/AjaxObservable.ts");
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fn mk() -> swc::Compiler {
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let cm = Arc::new(SourceMap::new(FilePathMapping::empty()));
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let c = swc::Compiler::new(cm.clone());
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c
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}
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fn parse(c: &swc::Compiler, src: &str) -> (Arc<SourceFile>, Program) {
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let fm = c.cm.new_source_file(
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FileName::Real("rxjs/src/internal/observable/dom/AjaxObservable.ts".into()),
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src.to_string(),
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);
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let handler = Handler::with_emitter_writer(Box::new(stderr()), Some(c.cm.clone()));
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let module = c
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.parse_js(
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fm.clone(),
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&handler,
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JscTarget::Es5,
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Syntax::Typescript(Default::default()),
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true,
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true,
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)
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.unwrap();
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(fm, module)
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}
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#[bench]
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fn babelify_only(b: &mut Bencher) {
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b.bytes = SOURCE.len() as _;
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let c = mk();
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let (fm, module) = parse(&c, SOURCE);
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let handler = Handler::with_emitter_writer(Box::new(stderr()), Some(c.cm.clone()));
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let module = c.run_transform(&handler, false, || {
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module
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.fold_with(&mut typescript::strip())
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.fold_with(&mut es2020(Default::default()))
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});
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b.iter(|| {
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let program = module.clone();
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let ctx = Context {
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fm: fm.clone(),
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cm: c.cm.clone(),
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comments: c.comments().clone(),
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};
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let babel_ast = program.babelify(&ctx);
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black_box(babel_ast)
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});
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}
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fn parse_and_babelify(b: &mut Bencher, _name: &str, src: &str) {
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b.bytes = src.len() as _;
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let c = mk();
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b.iter(|| {
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let (fm, program) = parse(&c, src);
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let ctx = Context {
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fm,
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cm: c.cm.clone(),
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comments: c.comments().clone(),
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};
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let babel_ast = program.babelify(&ctx);
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black_box(babel_ast);
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});
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}
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/// https://esprima.org/test/compare.html
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macro_rules! src_to_babel_ast {
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($name:ident, $src:expr) => {
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#[bench]
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fn $name(b: &mut Bencher) {
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parse_and_babelify(b, stringify!($name), $src);
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}
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};
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}
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src_to_babel_ast!(
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parse_and_babelify_angular,
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include_str!("../../../parser/benches/files/angular-1.2.5.js")
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);
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src_to_babel_ast!(
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parse_and_babelify_backbone,
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include_str!("../../../parser/benches/files/backbone-1.1.0.js")
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);
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src_to_babel_ast!(
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parse_and_babelify_jquery,
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include_str!("../../../parser/benches/files/jquery-1.9.1.js")
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);
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src_to_babel_ast!(
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parse_and_babelify_jquery_mobile,
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include_str!("../../../parser/benches/files/jquery.mobile-1.4.2.js")
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);
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src_to_babel_ast!(
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parse_and_babelify_mootools,
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include_str!("../../../parser/benches/files/mootools-1.4.5.js")
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);
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src_to_babel_ast!(
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parse_and_babelify_underscore,
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include_str!("../../../parser/benches/files/underscore-1.5.2.js")
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);
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src_to_babel_ast!(
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parse_and_babelify_yui,
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include_str!("../../../parser/benches/files/yui-3.12.0.js")
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);
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