From 5e20a29b4fdc8a2d442d1093681b396dcb4b816b Mon Sep 17 00:00:00 2001 From: Robin Krahl Date: Tue, 7 Jan 2020 11:18:04 +0000 Subject: Add structopt dependency in version 0.3.7 This patch series replaces argparse with structopt in the argument handling code. As a first step, we need structopt as a dependency. Import subrepo structopt/:structopt at efbdda4753592e27bc430fb01f7b9650b2f3174d Import subrepo bitflags/:bitflags at 30668016aca6bd3b02c766e8347e0b4080d4c296 Import subrepo clap/:clap at 784524f7eb193e35f81082cc69454c8c21b948f7 Import subrepo heck/:heck at 093d56fbf001e1506e56dbfa38631d99b1066df1 Import subrepo proc-macro-error/:proc-macro-error at 6c4cfe79a622c5de8ae68557993542be46eacae2 Import subrepo proc-macro2/:proc-macro2 at d5d48eddca4566e5438e8a2cbed4a74e049544de Import subrepo quote/:quote at 727436c6c137b20f0f34dde5d8fda2679b9747ad Import subrepo rustversion/:rustversion at 0c5663313516263059ce9059ef81fc7a1cf655ca Import subrepo syn-mid/:syn-mid at 5d3d85414a9e6674e1857ec22a87b96e04a6851a Import subrepo syn/:syn at e87c27e87f6f4ef8919d0372bdb056d53ef0d8f3 Import subrepo textwrap/:textwrap at abcd618beae3f74841032aa5b53c1086b0a57ca2 Import subrepo unicode-segmentation/:unicode-segmentation at 637c9874c4fe0c205ff27787faf150a40295c6c3 Import subrepo unicode-width/:unicode-width at 3033826f8bf05e82724140a981d5941e48fce393 Import subrepo unicode-xid/:unicode-xid at 4baae9fffb156ba229665b972a9cd5991787ceb7 --- syn/tests/test_round_trip.rs | 151 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 151 insertions(+) create mode 100644 syn/tests/test_round_trip.rs (limited to 'syn/tests/test_round_trip.rs') diff --git a/syn/tests/test_round_trip.rs b/syn/tests/test_round_trip.rs new file mode 100644 index 0000000..435bd6a --- /dev/null +++ b/syn/tests/test_round_trip.rs @@ -0,0 +1,151 @@ +#![cfg(not(syn_disable_nightly_tests))] +#![recursion_limit = "1024"] +#![feature(rustc_private)] + +extern crate rustc_expand; +extern crate rustc_parse as parse; +extern crate rustc_span; +extern crate syntax; + +mod features; + +use quote::quote; +use rayon::iter::{IntoParallelIterator, ParallelIterator}; +use rustc_span::edition::Edition; +use rustc_span::FileName; +use syntax::ast; +use syntax::errors::PResult; +use syntax::sess::ParseSess; +use syntax::source_map::FilePathMapping; +use walkdir::{DirEntry, WalkDir}; + +use std::fs::File; +use std::io::Read; +use std::panic; +use std::process; +use std::sync::atomic::{AtomicUsize, Ordering}; +use std::time::Instant; + +#[macro_use] +mod macros; + +#[allow(dead_code)] +mod common; + +mod repo; + +use common::eq::SpanlessEq; + +#[test] +fn test_round_trip() { + repo::clone_rust(); + let abort_after = common::abort_after(); + if abort_after == 0 { + panic!("Skipping all round_trip tests"); + } + + let failed = AtomicUsize::new(0); + + WalkDir::new("tests/rust") + .sort_by(|a, b| a.file_name().cmp(b.file_name())) + .into_iter() + .filter_entry(repo::base_dir_filter) + .collect::, walkdir::Error>>() + .unwrap() + .into_par_iter() + .for_each(|entry| { + let path = entry.path(); + if path.is_dir() { + return; + } + + let mut file = File::open(path).unwrap(); + let mut content = String::new(); + file.read_to_string(&mut content).unwrap(); + + let start = Instant::now(); + let (krate, elapsed) = match syn::parse_file(&content) { + Ok(krate) => (krate, start.elapsed()), + Err(msg) => { + errorf!("=== {}: syn failed to parse\n{:?}\n", path.display(), msg); + let prev_failed = failed.fetch_add(1, Ordering::SeqCst); + if prev_failed + 1 >= abort_after { + process::exit(1); + } + return; + } + }; + let back = quote!(#krate).to_string(); + + let equal = panic::catch_unwind(|| { + syntax::with_globals(Edition::Edition2018, || { + let sess = ParseSess::new(FilePathMapping::empty()); + let before = match libsyntax_parse(content, &sess) { + Ok(before) => before, + Err(mut diagnostic) => { + diagnostic.cancel(); + if diagnostic + .message() + .starts_with("file not found for module") + { + errorf!("=== {}: ignore\n", path.display()); + } else { + errorf!( + "=== {}: ignore - libsyntax failed to parse original content: {}\n", + path.display(), + diagnostic.message() + ); + } + return true; + } + }; + let after = match libsyntax_parse(back, &sess) { + Ok(after) => after, + Err(mut diagnostic) => { + errorf!("=== {}: libsyntax failed to parse", path.display()); + diagnostic.emit(); + return false; + } + }; + + if SpanlessEq::eq(&before, &after) { + errorf!( + "=== {}: pass in {}ms\n", + path.display(), + elapsed.as_secs() * 1000 + + u64::from(elapsed.subsec_nanos()) / 1_000_000 + ); + true + } else { + errorf!( + "=== {}: FAIL\nbefore: {:#?}\nafter: {:#?}\n", + path.display(), + before, + after, + ); + false + } + }) + }); + match equal { + Err(_) => errorf!("=== {}: ignoring libsyntax panic\n", path.display()), + Ok(true) => {} + Ok(false) => { + let prev_failed = failed.fetch_add(1, Ordering::SeqCst); + if prev_failed + 1 >= abort_after { + process::exit(1); + } + } + } + }); + + let failed = failed.load(Ordering::SeqCst); + if failed > 0 { + panic!("{} failures", failed); + } +} + +fn libsyntax_parse(content: String, sess: &ParseSess) -> PResult { + let name = FileName::Custom("test_round_trip".to_string()); + parse::parse_crate_from_source_str(name, content, sess) +} -- cgit v1.2.1