58 lines
1.3 KiB
Rust
58 lines
1.3 KiB
Rust
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// $ cargo bench --features full,test --bench file
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#![feature(rustc_private, test)]
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#![recursion_limit = "1024"]
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#![allow(
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clippy::items_after_statements,
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clippy::manual_let_else,
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clippy::match_like_matches_macro,
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clippy::missing_panics_doc,
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clippy::must_use_candidate,
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clippy::uninlined_format_args
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)]
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extern crate test;
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#[macro_use]
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#[path = "../tests/macros/mod.rs"]
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mod macros;
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#[allow(dead_code)]
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#[path = "../tests/repo/mod.rs"]
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mod repo;
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use proc_macro2::{Span, TokenStream};
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use std::fs;
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use std::str::FromStr;
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use syn::parse::{ParseStream, Parser};
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use test::Bencher;
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const FILE: &str = "tests/rust/library/core/src/str/mod.rs";
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fn get_tokens() -> TokenStream {
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repo::clone_rust();
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let content = fs::read_to_string(FILE).unwrap();
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TokenStream::from_str(&content).unwrap()
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}
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#[bench]
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fn baseline(b: &mut Bencher) {
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let tokens = get_tokens();
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b.iter(|| drop(tokens.clone()));
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}
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#[bench]
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fn create_token_buffer(b: &mut Bencher) {
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let tokens = get_tokens();
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fn immediate_fail(_input: ParseStream) -> syn::Result<()> {
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Err(syn::Error::new(Span::call_site(), ""))
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}
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b.iter(|| immediate_fail.parse2(tokens.clone()));
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}
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#[bench]
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fn parse_file(b: &mut Bencher) {
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let tokens = get_tokens();
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b.iter(|| syn::parse2::<syn::File>(tokens.clone()));
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}
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