vendor/syn/benches/file.rs

   1 // $ cargo bench --features full --bench file
   2
   3 #![recursion_limit = "256"]
   4 #![feature(rustc_private, test)]
   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
  15 use proc_macro2::TokenStream;
  16 use std::fs;
  17 use std::str::FromStr;
  18 use test::Bencher;
  19
  20 const FILE: &str = "tests/rust/src/libcore/str/mod.rs";
  21
  22 #[bench]
  23 fn parse_file(b: &mut Bencher) {
  24     common::clone_rust();
  25     let content = fs::read_to_string(FILE).unwrap();
  26     let tokens = TokenStream::from_str(&content).unwrap();
  27     b.iter(|| syn::parse2::<syn::File>(tokens.clone()));
  28 }