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#![cfg(not(miri))]
#![allow(
clippy::manual_assert,
clippy::needless_lifetimes,
clippy::uninlined_format_args
)]
use quote::ToTokens as _;
use std::fs;
use std::mem;
use std::panic;
use std::path::Path;
use std::sync::atomic::{AtomicUsize, Ordering};
use syn::visit_mut::{self, VisitMut};
use syn::Expr;
#[macro_use]
mod macros;
mod repo;
#[test]
fn test_unparenthesize() {
repo::rayon_init();
repo::clone_rust();
let failed = AtomicUsize::new(0);
repo::for_each_rust_file(|path| test(path, &failed));
let failed = failed.into_inner();
if failed > 0 {
panic!("{} failures", failed);
}
}
struct FlattenParens;
impl VisitMut for FlattenParens {
fn visit_expr_mut(&mut self, e: &mut Expr) {
while let Expr::Paren(paren) = e {
*e = mem::replace(&mut *paren.expr, Expr::PLACEHOLDER);
}
visit_mut::visit_expr_mut(self, e);
}
}
fn test(path: &Path, failed: &AtomicUsize) {
let content = fs::read_to_string(path).unwrap();
match panic::catch_unwind(|| -> syn::Result<()> {
let mut syntax_tree = syn::parse_file(&content)?;
FlattenParens.visit_file_mut(&mut syntax_tree);
syn::parse2::<syn::File>(syntax_tree.to_token_stream())?;
Ok(())
}) {
Err(_) => {
errorf!("=== {}: syn panic\n", path.display());
failed.fetch_add(1, Ordering::Relaxed);
}
Ok(Err(msg)) => {
errorf!("=== {}: syn failed to parse\n{:?}\n", path.display(), msg);
failed.fetch_add(1, Ordering::Relaxed);
}
Ok(Ok(())) => {}
}
}