1 // $ cargo bench --features full --bench file
2 
3 #![feature(rustc_private, test)]
4 #![recursion_limit = "1024"]
5 #![allow(clippy::missing_panics_doc, clippy::must_use_candidate)]
6 
7 extern crate test;
8 
9 #[macro_use]
10 #[path = "../tests/macros/mod.rs"]
11 mod macros;
12 
13 #[path = "../tests/common/mod.rs"]
14 mod common;
15 #[path = "../tests/repo/mod.rs"]
16 pub mod repo;
17 
18 use proc_macro2::TokenStream;
19 use std::fs;
20 use std::str::FromStr;
21 use test::Bencher;
22 
23 const FILE: &str = "tests/rust/library/core/src/str/mod.rs";
24 
25 #[bench]
parse_file(b: &mut Bencher)26 fn parse_file(b: &mut Bencher) {
27     repo::clone_rust();
28     let content = fs::read_to_string(FILE).unwrap();
29     let tokens = TokenStream::from_str(&content).unwrap();
30     b.iter(|| syn::parse2::<syn::File>(tokens.clone()));
31 }
32