use std::{ fs, collections::HashMap, path::{Path, PathBuf}, process::{Command, Stdio}, io::{Error, ErrorKind} }; use failure::bail; use itertools::Itertools; pub use teraron::{Mode, Overwrite, Verify}; pub type Result = std::result::Result; pub const GRAMMAR: &str = "crates/ra_syntax/src/grammar.ron"; const GRAMMAR_DIR: &str = "crates/ra_syntax/src/grammar"; const OK_INLINE_TESTS_DIR: &str = "crates/ra_syntax/tests/data/parser/inline/ok"; const ERR_INLINE_TESTS_DIR: &str = "crates/ra_syntax/tests/data/parser/inline/err"; pub const SYNTAX_KINDS: &str = "crates/ra_syntax/src/syntax_kinds/generated.rs.tera"; pub const AST: &str = "crates/ra_syntax/src/ast/generated.rs.tera"; const TOOLCHAIN: &str = "stable"; #[derive(Debug)] pub struct Test { pub name: String, pub text: String, pub ok: bool, } pub fn collect_tests(s: &str) -> Vec<(usize, Test)> { let mut res = vec![]; let prefix = "// "; let comment_blocks = s .lines() .map(str::trim_start) .enumerate() .group_by(|(_idx, line)| line.starts_with(prefix)); 'outer: for (is_comment, block) in comment_blocks.into_iter() { if !is_comment { continue; } let mut block = block.map(|(idx, line)| (idx, &line[prefix.len()..])); let mut ok = true; let (start_line, name) = loop { match block.next() { Some((idx, line)) if line.starts_with("test ") => { break (idx, line["test ".len()..].to_string()); } Some((idx, line)) if line.starts_with("test_err ") => { ok = false; break (idx, line["test_err ".len()..].to_string()); } Some(_) => (), None => continue 'outer, } }; let text: String = itertools::join(block.map(|(_, line)| line).chain(::std::iter::once("")), "\n"); assert!(!text.trim().is_empty() && text.ends_with('\n')); res.push((start_line, Test { name, text, ok })) } res } pub fn generate(mode: Mode) -> Result<()> { let grammar = project_root().join(GRAMMAR); let syntax_kinds = project_root().join(SYNTAX_KINDS); let ast = project_root().join(AST); teraron::generate(&syntax_kinds, &grammar, mode)?; teraron::generate(&ast, &grammar, mode)?; Ok(()) } pub fn project_root() -> PathBuf { Path::new(&env!("CARGO_MANIFEST_DIR")).ancestors().nth(2).unwrap().to_path_buf() } pub fn run(cmdline: &str, dir: &str) -> Result<()> { eprintln!("\nwill run: {}", cmdline); let project_dir = project_root().join(dir); let mut args = cmdline.split_whitespace(); let exec = args.next().unwrap(); let status = Command::new(exec).args(args).current_dir(project_dir).status()?; if !status.success() { bail!("`{}` exited with {}", cmdline, status); } Ok(()) } pub fn run_rustfmt(mode: Mode) -> Result<()> { match Command::new("rustup") .args(&["run", TOOLCHAIN, "--", "cargo", "fmt", "--version"]) .stderr(Stdio::null()) .stdout(Stdio::null()) .status() { Ok(status) if status.success() => (), _ => install_rustfmt()?, }; if mode == Verify { run(&format!("rustup run {} -- cargo fmt -- --check", TOOLCHAIN), ".")?; } else { run(&format!("rustup run {} -- cargo fmt", TOOLCHAIN), ".")?; } Ok(()) } pub fn install_rustfmt() -> Result<()> { run(&format!("rustup install {}", TOOLCHAIN), ".")?; run(&format!("rustup component add rustfmt --toolchain {}", TOOLCHAIN), ".") } pub fn install_format_hook() -> Result<()> { let result_path = Path::new("./.git/hooks/pre-commit"); if !result_path.exists() { run("cargo build --package tools --bin pre-commit", ".")?; if cfg!(windows) { fs::copy("./target/debug/pre-commit.exe", result_path)?; } else { fs::copy("./target/debug/pre-commit", result_path)?; } } else { return Err(Error::new(ErrorKind::AlreadyExists, "Git hook already created").into()); } Ok(()) } pub fn run_fuzzer() -> Result<()> { match Command::new("cargo") .args(&["fuzz", "--help"]) .stderr(Stdio::null()) .stdout(Stdio::null()) .status() { Ok(status) if status.success() => (), _ => run("cargo install cargo-fuzz", ".")?, }; run("rustup run nightly -- cargo fuzz run parser", "./crates/ra_syntax") } pub fn gen_tests(mode: Mode) -> Result<()> { let tests = tests_from_dir(&project_root().join(Path::new(GRAMMAR_DIR)))?; fn install_tests(tests: &HashMap, into: &str, mode: Mode) -> Result<()> { let tests_dir = project_root().join(into); if !tests_dir.is_dir() { fs::create_dir_all(&tests_dir)?; } // ok is never actually read, but it needs to be specified to create a Test in existing_tests let existing = existing_tests(&tests_dir, true)?; for t in existing.keys().filter(|&t| !tests.contains_key(t)) { panic!("Test is deleted: {}", t); } let mut new_idx = existing.len() + 1; for (name, test) in tests { let path = match existing.get(name) { Some((path, _test)) => path.clone(), None => { let file_name = format!("{:04}_{}.rs", new_idx, name); new_idx += 1; tests_dir.join(file_name) } }; teraron::update(&path, &test.text, mode)?; } Ok(()) } install_tests(&tests.ok, OK_INLINE_TESTS_DIR, mode)?; install_tests(&tests.err, ERR_INLINE_TESTS_DIR, mode) } #[derive(Default, Debug)] struct Tests { pub ok: HashMap, pub err: HashMap, } fn tests_from_dir(dir: &Path) -> Result { let mut res = Tests::default(); for entry in ::walkdir::WalkDir::new(dir) { let entry = entry.unwrap(); if !entry.file_type().is_file() { continue; } if entry.path().extension().unwrap_or_default() != "rs" { continue; } process_file(&mut res, entry.path())?; } let grammar_rs = dir.parent().unwrap().join("grammar.rs"); process_file(&mut res, &grammar_rs)?; return Ok(res); fn process_file(res: &mut Tests, path: &Path) -> Result<()> { let text = fs::read_to_string(path)?; for (_, test) in collect_tests(&text) { if test.ok { if let Some(old_test) = res.ok.insert(test.name.clone(), test) { bail!("Duplicate test: {}", old_test.name) } } else { if let Some(old_test) = res.err.insert(test.name.clone(), test) { bail!("Duplicate test: {}", old_test.name) } } } Ok(()) } } fn existing_tests(dir: &Path, ok: bool) -> Result> { let mut res = HashMap::new(); for file in fs::read_dir(dir)? { let file = file?; let path = file.path(); if path.extension().unwrap_or_default() != "rs" { continue; } let name = { let file_name = path.file_name().unwrap().to_str().unwrap(); file_name[5..file_name.len() - 3].to_string() }; let text = fs::read_to_string(&path)?; let test = Test { name: name.clone(), text, ok }; if let Some(old) = res.insert(name, (path, test)) { println!("Duplicate test: {:?}", old); } } Ok(res) }