vendor/syn/benches/file.rs


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// $ cargo bench --features full --bench file

#![feature(rustc_private, test)]
#![recursion_limit = "1024"]
#![allow(clippy::missing_panics_doc, clippy::must_use_candidate)]

extern crate test;

#[macro_use]
#[path = "../tests/macros/mod.rs"]
mod macros;

#[path = "../tests/common/mod.rs"]
mod common;
#[path = "../tests/repo/mod.rs"]
pub mod repo;

use proc_macro2::TokenStream;
use std::fs;
use std::str::FromStr;
use test::Bencher;

const FILE: &str = "tests/rust/library/core/src/str/mod.rs";

#[bench]
fn parse_file(b: &mut Bencher) {
    repo::clone_rust();
    let content = fs::read_to_string(FILE).unwrap();
    let tokens = TokenStream::from_str(&content).unwrap();
    b.iter(|| syn::parse2::<syn::File>(tokens.clone()));
}