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