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-rw-r--r--vendor/syn/benches/file.rs31
-rw-r--r--vendor/syn/benches/rust.rs167
2 files changed, 198 insertions, 0 deletions
diff --git a/vendor/syn/benches/file.rs b/vendor/syn/benches/file.rs
new file mode 100644
index 000000000..86204df2d
--- /dev/null
+++ b/vendor/syn/benches/file.rs
@@ -0,0 +1,31 @@
+// $ 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()));
+}
diff --git a/vendor/syn/benches/rust.rs b/vendor/syn/benches/rust.rs
new file mode 100644
index 000000000..5e4fba182
--- /dev/null
+++ b/vendor/syn/benches/rust.rs
@@ -0,0 +1,167 @@
+// $ cargo bench --features full --bench rust
+//
+// Syn only, useful for profiling:
+// $ RUSTFLAGS='--cfg syn_only' cargo build --release --features full --bench rust
+
+#![cfg_attr(not(syn_only), feature(rustc_private))]
+#![recursion_limit = "1024"]
+#![allow(clippy::cast_lossless, clippy::unnecessary_wraps)]
+
+#[macro_use]
+#[path = "../tests/macros/mod.rs"]
+mod macros;
+
+#[path = "../tests/common/mod.rs"]
+mod common;
+#[path = "../tests/repo/mod.rs"]
+mod repo;
+
+use std::fs;
+use std::time::{Duration, Instant};
+
+#[cfg(not(syn_only))]
+mod tokenstream_parse {
+ use proc_macro2::TokenStream;
+ use std::str::FromStr;
+
+ pub fn bench(content: &str) -> Result<(), ()> {
+ TokenStream::from_str(content).map(drop).map_err(drop)
+ }
+}
+
+mod syn_parse {
+ pub fn bench(content: &str) -> Result<(), ()> {
+ syn::parse_file(content).map(drop).map_err(drop)
+ }
+}
+
+#[cfg(not(syn_only))]
+mod librustc_parse {
+ extern crate rustc_data_structures;
+ extern crate rustc_error_messages;
+ extern crate rustc_errors;
+ extern crate rustc_parse;
+ extern crate rustc_session;
+ extern crate rustc_span;
+
+ use rustc_data_structures::sync::Lrc;
+ use rustc_error_messages::FluentBundle;
+ use rustc_errors::{emitter::Emitter, Diagnostic, Handler};
+ use rustc_session::parse::ParseSess;
+ use rustc_span::source_map::{FilePathMapping, SourceMap};
+ use rustc_span::{edition::Edition, FileName};
+
+ pub fn bench(content: &str) -> Result<(), ()> {
+ struct SilentEmitter;
+
+ impl Emitter for SilentEmitter {
+ fn emit_diagnostic(&mut self, _diag: &Diagnostic) {}
+ fn source_map(&self) -> Option<&Lrc<SourceMap>> {
+ None
+ }
+ fn fluent_bundle(&self) -> Option<&Lrc<FluentBundle>> {
+ None
+ }
+ fn fallback_fluent_bundle(&self) -> &FluentBundle {
+ panic!("silent emitter attempted to translate a diagnostic");
+ }
+ }
+
+ rustc_span::create_session_if_not_set_then(Edition::Edition2018, |_| {
+ let cm = Lrc::new(SourceMap::new(FilePathMapping::empty()));
+ let emitter = Box::new(SilentEmitter);
+ let handler = Handler::with_emitter(false, None, emitter);
+ let sess = ParseSess::with_span_handler(handler, cm);
+ if let Err(diagnostic) = rustc_parse::parse_crate_from_source_str(
+ FileName::Custom("bench".to_owned()),
+ content.to_owned(),
+ &sess,
+ ) {
+ diagnostic.cancel();
+ return Err(());
+ };
+ Ok(())
+ })
+ }
+}
+
+#[cfg(not(syn_only))]
+mod read_from_disk {
+ pub fn bench(content: &str) -> Result<(), ()> {
+ let _ = content;
+ Ok(())
+ }
+}
+
+fn exec(mut codepath: impl FnMut(&str) -> Result<(), ()>) -> Duration {
+ let begin = Instant::now();
+ let mut success = 0;
+ let mut total = 0;
+
+ walkdir::WalkDir::new("tests/rust/src")
+ .into_iter()
+ .filter_entry(repo::base_dir_filter)
+ .for_each(|entry| {
+ let entry = entry.unwrap();
+ let path = entry.path();
+ if path.is_dir() {
+ return;
+ }
+ let content = fs::read_to_string(path).unwrap();
+ let ok = codepath(&content).is_ok();
+ success += ok as usize;
+ total += 1;
+ if !ok {
+ eprintln!("FAIL {}", path.display());
+ }
+ });
+
+ assert_eq!(success, total);
+ begin.elapsed()
+}
+
+fn main() {
+ repo::clone_rust();
+
+ macro_rules! testcases {
+ ($($(#[$cfg:meta])* $name:ident,)*) => {
+ [
+ $(
+ $(#[$cfg])*
+ (stringify!($name), $name::bench as fn(&str) -> Result<(), ()>),
+ )*
+ ]
+ };
+ }
+
+ #[cfg(not(syn_only))]
+ {
+ let mut lines = 0;
+ let mut files = 0;
+ exec(|content| {
+ lines += content.lines().count();
+ files += 1;
+ Ok(())
+ });
+ eprintln!("\n{} lines in {} files", lines, files);
+ }
+
+ for (name, f) in testcases!(
+ #[cfg(not(syn_only))]
+ read_from_disk,
+ #[cfg(not(syn_only))]
+ tokenstream_parse,
+ syn_parse,
+ #[cfg(not(syn_only))]
+ librustc_parse,
+ ) {
+ eprint!("{:20}", format!("{}:", name));
+ let elapsed = exec(f);
+ eprintln!(
+ "elapsed={}.{:03}s",
+ elapsed.as_secs(),
+ elapsed.subsec_millis(),
+ );
+ }
+ eprintln!();
+}