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https://github.com/denoland/deno.git
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f9add94e17
Working on loading plugin configuration for https://github.com/denoland/deno/pull/27203 I encountered a lot of complexity, so did some drive-by cleanups to make it easier to grok the code and have fewer duplicate names.
656 lines
19 KiB
Rust
656 lines
19 KiB
Rust
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
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//! This module provides file linting utilities using
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//! [`deno_lint`](https://github.com/denoland/deno_lint).
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use deno_ast::ModuleSpecifier;
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use deno_ast::ParsedSource;
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use deno_config::deno_json::LintRulesConfig;
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use deno_config::glob::FileCollector;
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use deno_config::glob::FilePatterns;
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use deno_config::workspace::WorkspaceDirectory;
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use deno_core::anyhow::anyhow;
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use deno_core::error::generic_error;
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use deno_core::error::AnyError;
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use deno_core::futures::future::LocalBoxFuture;
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use deno_core::futures::FutureExt;
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use deno_core::parking_lot::Mutex;
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use deno_core::serde_json;
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use deno_core::unsync::future::LocalFutureExt;
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use deno_core::unsync::future::SharedLocal;
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use deno_graph::ModuleGraph;
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use deno_lint::diagnostic::LintDiagnostic;
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use deno_lint::linter::LintConfig as DenoLintConfig;
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use log::debug;
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use reporters::create_reporter;
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use reporters::LintReporter;
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use serde::Serialize;
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use std::collections::HashSet;
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use std::fs;
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use std::io::stdin;
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use std::io::Read;
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use std::path::PathBuf;
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use std::rc::Rc;
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use std::sync::Arc;
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use crate::args::CliOptions;
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use crate::args::Flags;
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use crate::args::LintFlags;
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use crate::args::LintOptions;
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use crate::args::WorkspaceLintOptions;
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use crate::cache::Caches;
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use crate::cache::IncrementalCache;
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use crate::colors;
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use crate::factory::CliFactory;
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use crate::graph_util::ModuleGraphCreator;
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use crate::tools::fmt::run_parallelized;
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use crate::util::display;
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use crate::util::file_watcher;
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use crate::util::file_watcher::WatcherCommunicator;
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use crate::util::fs::canonicalize_path;
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use crate::util::path::is_script_ext;
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use crate::util::sync::AtomicFlag;
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mod linter;
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mod reporters;
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mod rules;
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pub use linter::CliLinter;
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pub use linter::CliLinterOptions;
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pub use rules::collect_no_slow_type_diagnostics;
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pub use rules::ConfiguredRules;
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pub use rules::LintRuleProvider;
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const JSON_SCHEMA_VERSION: u8 = 1;
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static STDIN_FILE_NAME: &str = "$deno$stdin.mts";
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pub async fn lint(
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flags: Arc<Flags>,
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lint_flags: LintFlags,
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) -> Result<(), AnyError> {
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if lint_flags.watch.is_some() {
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if lint_flags.is_stdin() {
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return Err(generic_error(
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"Lint watch on standard input is not supported.",
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));
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}
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return lint_with_watch(flags, lint_flags).await;
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}
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let factory = CliFactory::from_flags(flags);
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let cli_options = factory.cli_options()?;
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let lint_rule_provider = factory.lint_rule_provider().await?;
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let is_stdin = lint_flags.is_stdin();
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let deno_lint_config = cli_options.resolve_deno_lint_config()?;
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let workspace_lint_options =
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cli_options.resolve_workspace_lint_options(&lint_flags)?;
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let success = if is_stdin {
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lint_stdin(
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cli_options,
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lint_rule_provider,
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workspace_lint_options,
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lint_flags,
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deno_lint_config,
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)?
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} else {
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let mut linter = WorkspaceLinter::new(
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factory.caches()?.clone(),
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lint_rule_provider,
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factory.module_graph_creator().await?.clone(),
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cli_options.start_dir.clone(),
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&workspace_lint_options,
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);
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let paths_with_options_batches =
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resolve_paths_with_options_batches(cli_options, &lint_flags)?;
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for paths_with_options in paths_with_options_batches {
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linter
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.lint_files(
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cli_options,
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paths_with_options.options,
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deno_lint_config.clone(),
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paths_with_options.dir,
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paths_with_options.paths,
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)
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.await?;
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}
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linter.finish()
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};
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if !success {
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deno_runtime::exit(1);
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}
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Ok(())
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}
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async fn lint_with_watch_inner(
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flags: Arc<Flags>,
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lint_flags: LintFlags,
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watcher_communicator: Arc<WatcherCommunicator>,
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changed_paths: Option<Vec<PathBuf>>,
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) -> Result<(), AnyError> {
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let factory = CliFactory::from_flags(flags);
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let cli_options = factory.cli_options()?;
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let lint_config = cli_options.resolve_deno_lint_config()?;
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let mut paths_with_options_batches =
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resolve_paths_with_options_batches(cli_options, &lint_flags)?;
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for paths_with_options in &mut paths_with_options_batches {
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_ = watcher_communicator.watch_paths(paths_with_options.paths.clone());
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let files = std::mem::take(&mut paths_with_options.paths);
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paths_with_options.paths = if let Some(paths) = &changed_paths {
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// lint all files on any changed (https://github.com/denoland/deno/issues/12446)
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files
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.iter()
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.any(|path| {
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canonicalize_path(path)
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.map(|p| paths.contains(&p))
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.unwrap_or(false)
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})
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.then_some(files)
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.unwrap_or_else(|| [].to_vec())
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} else {
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files
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};
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}
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let mut linter = WorkspaceLinter::new(
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factory.caches()?.clone(),
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factory.lint_rule_provider().await?,
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factory.module_graph_creator().await?.clone(),
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cli_options.start_dir.clone(),
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&cli_options.resolve_workspace_lint_options(&lint_flags)?,
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);
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for paths_with_options in paths_with_options_batches {
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linter
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.lint_files(
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cli_options,
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paths_with_options.options,
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lint_config.clone(),
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paths_with_options.dir,
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paths_with_options.paths,
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)
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.await?;
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}
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linter.finish();
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Ok(())
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}
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async fn lint_with_watch(
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flags: Arc<Flags>,
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lint_flags: LintFlags,
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) -> Result<(), AnyError> {
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let watch_flags = lint_flags.watch.as_ref().unwrap();
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file_watcher::watch_func(
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flags,
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file_watcher::PrintConfig::new("Lint", !watch_flags.no_clear_screen),
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move |flags, watcher_communicator, changed_paths| {
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let lint_flags = lint_flags.clone();
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watcher_communicator.show_path_changed(changed_paths.clone());
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Ok(lint_with_watch_inner(
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flags,
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lint_flags,
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watcher_communicator,
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changed_paths,
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))
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},
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)
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.await
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}
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struct PathsWithOptions {
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dir: WorkspaceDirectory,
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paths: Vec<PathBuf>,
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options: LintOptions,
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}
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fn resolve_paths_with_options_batches(
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cli_options: &CliOptions,
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lint_flags: &LintFlags,
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) -> Result<Vec<PathsWithOptions>, AnyError> {
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let members_lint_options =
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cli_options.resolve_lint_options_for_members(lint_flags)?;
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let mut paths_with_options_batches =
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Vec::with_capacity(members_lint_options.len());
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for (dir, lint_options) in members_lint_options {
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let files = collect_lint_files(cli_options, lint_options.files.clone())?;
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if !files.is_empty() {
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paths_with_options_batches.push(PathsWithOptions {
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dir,
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paths: files,
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options: lint_options,
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});
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}
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}
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if paths_with_options_batches.is_empty() {
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return Err(generic_error("No target files found."));
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}
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Ok(paths_with_options_batches)
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}
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type WorkspaceModuleGraphFuture =
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SharedLocal<LocalBoxFuture<'static, Result<Rc<ModuleGraph>, Rc<AnyError>>>>;
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struct WorkspaceLinter {
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caches: Arc<Caches>,
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lint_rule_provider: LintRuleProvider,
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module_graph_creator: Arc<ModuleGraphCreator>,
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workspace_dir: Arc<WorkspaceDirectory>,
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reporter_lock: Arc<Mutex<Box<dyn LintReporter + Send>>>,
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workspace_module_graph: Option<WorkspaceModuleGraphFuture>,
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has_error: Arc<AtomicFlag>,
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file_count: usize,
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}
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impl WorkspaceLinter {
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pub fn new(
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caches: Arc<Caches>,
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lint_rule_provider: LintRuleProvider,
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module_graph_creator: Arc<ModuleGraphCreator>,
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workspace_dir: Arc<WorkspaceDirectory>,
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workspace_options: &WorkspaceLintOptions,
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) -> Self {
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let reporter_lock =
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Arc::new(Mutex::new(create_reporter(workspace_options.reporter_kind)));
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Self {
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caches,
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lint_rule_provider,
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module_graph_creator,
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workspace_dir,
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reporter_lock,
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workspace_module_graph: None,
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has_error: Default::default(),
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file_count: 0,
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}
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}
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pub async fn lint_files(
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&mut self,
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cli_options: &Arc<CliOptions>,
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lint_options: LintOptions,
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lint_config: DenoLintConfig,
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member_dir: WorkspaceDirectory,
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paths: Vec<PathBuf>,
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) -> Result<(), AnyError> {
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self.file_count += paths.len();
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let lint_rules = self.lint_rule_provider.resolve_lint_rules_err_empty(
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lint_options.rules,
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member_dir.maybe_deno_json().map(|c| c.as_ref()),
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)?;
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let maybe_incremental_cache =
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lint_rules.incremental_cache_state().map(|state| {
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Arc::new(IncrementalCache::new(
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self.caches.lint_incremental_cache_db(),
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&state,
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&paths,
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))
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});
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let linter = Arc::new(CliLinter::new(CliLinterOptions {
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configured_rules: lint_rules,
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fix: lint_options.fix,
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deno_lint_config: lint_config,
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}));
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let has_error = self.has_error.clone();
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let reporter_lock = self.reporter_lock.clone();
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let mut futures = Vec::with_capacity(2);
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if linter.has_package_rules() {
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if let Some(fut) = self.run_package_rules(&linter, &member_dir, &paths) {
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futures.push(fut);
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}
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}
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let maybe_incremental_cache_ = maybe_incremental_cache.clone();
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let linter = linter.clone();
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let cli_options = cli_options.clone();
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let fut = async move {
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let operation = move |file_path: PathBuf| {
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let file_text = deno_ast::strip_bom(fs::read_to_string(&file_path)?);
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// don't bother rechecking this file if it didn't have any diagnostics before
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if let Some(incremental_cache) = &maybe_incremental_cache_ {
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if incremental_cache.is_file_same(&file_path, &file_text) {
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return Ok(());
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}
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}
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let r = linter.lint_file(
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&file_path,
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file_text,
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cli_options.ext_flag().as_deref(),
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);
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if let Ok((file_source, file_diagnostics)) = &r {
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if let Some(incremental_cache) = &maybe_incremental_cache_ {
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if file_diagnostics.is_empty() {
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// update the incremental cache if there were no diagnostics
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incremental_cache.update_file(
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&file_path,
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// ensure the returned text is used here as it may have been modified via --fix
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file_source.text(),
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)
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}
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}
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}
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let success = handle_lint_result(
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&file_path.to_string_lossy(),
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r,
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reporter_lock.clone(),
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);
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if !success {
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has_error.raise();
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}
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Ok(())
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};
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run_parallelized(paths, operation).await
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}
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.boxed_local();
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futures.push(fut);
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if lint_options.fix {
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// run sequentially when using `--fix` to lower the chances of weird
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// bugs where a file level fix affects a package level diagnostic though
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// it probably will happen anyway
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for future in futures {
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future.await?;
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}
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} else {
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deno_core::futures::future::try_join_all(futures).await?;
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}
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if let Some(incremental_cache) = &maybe_incremental_cache {
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incremental_cache.wait_completion().await;
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}
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Ok(())
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}
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fn run_package_rules(
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&mut self,
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linter: &Arc<CliLinter>,
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member_dir: &WorkspaceDirectory,
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paths: &[PathBuf],
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) -> Option<LocalBoxFuture<Result<(), AnyError>>> {
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if self.workspace_module_graph.is_none() {
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let module_graph_creator = self.module_graph_creator.clone();
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let packages = self.workspace_dir.jsr_packages_for_publish();
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self.workspace_module_graph = Some(
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async move {
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module_graph_creator
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.create_and_validate_publish_graph(&packages, true)
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.await
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.map(Rc::new)
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.map_err(Rc::new)
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}
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.boxed_local()
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.shared_local(),
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);
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}
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let workspace_module_graph_future =
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self.workspace_module_graph.as_ref().unwrap().clone();
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let maybe_publish_config = member_dir.maybe_package_config();
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let publish_config = maybe_publish_config?;
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let has_error = self.has_error.clone();
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let reporter_lock = self.reporter_lock.clone();
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let linter = linter.clone();
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let path_urls = paths
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.iter()
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.filter_map(|p| ModuleSpecifier::from_file_path(p).ok())
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.collect::<HashSet<_>>();
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let fut = async move {
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let graph = workspace_module_graph_future
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.await
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.map_err(|err| anyhow!("{:#}", err))?;
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let export_urls =
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publish_config.config_file.resolve_export_value_urls()?;
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if !export_urls.iter().any(|url| path_urls.contains(url)) {
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return Ok(()); // entrypoint is not specified, so skip
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}
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let diagnostics = linter.lint_package(&graph, &export_urls);
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if !diagnostics.is_empty() {
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has_error.raise();
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let mut reporter = reporter_lock.lock();
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for diagnostic in &diagnostics {
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reporter.visit_diagnostic(diagnostic);
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}
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}
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Ok(())
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}
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.boxed_local();
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Some(fut)
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}
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pub fn finish(self) -> bool {
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debug!("Found {} files", self.file_count);
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self.reporter_lock.lock().close(self.file_count);
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!self.has_error.is_raised() // success
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}
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}
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fn collect_lint_files(
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cli_options: &CliOptions,
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files: FilePatterns,
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) -> Result<Vec<PathBuf>, AnyError> {
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FileCollector::new(|e| {
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is_script_ext(e.path)
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|| (e.path.extension().is_none() && cli_options.ext_flag().is_some())
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})
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.ignore_git_folder()
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.ignore_node_modules()
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.use_gitignore()
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.set_vendor_folder(cli_options.vendor_dir_path().map(ToOwned::to_owned))
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.collect_file_patterns(&deno_config::fs::RealDenoConfigFs, files)
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}
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#[allow(clippy::print_stdout)]
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pub fn print_rules_list(json: bool, maybe_rules_tags: Option<Vec<String>>) {
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let rule_provider = LintRuleProvider::new(None, None);
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let lint_rules = rule_provider
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.resolve_lint_rules(
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LintRulesConfig {
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tags: maybe_rules_tags.clone(),
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include: None,
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exclude: None,
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},
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None,
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)
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.rules;
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if json {
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let json_output = serde_json::json!({
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"version": JSON_SCHEMA_VERSION,
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"rules": lint_rules
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.iter()
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.map(|rule| {
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serde_json::json!({
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"code": rule.code(),
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"tags": rule.tags(),
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"docs": rule.docs(),
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})
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})
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.collect::<Vec<serde_json::Value>>(),
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});
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display::write_json_to_stdout(&json_output).unwrap();
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} else {
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// The rules should still be printed even if `--quiet` option is enabled,
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// so use `println!` here instead of `info!`.
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println!("Available rules:");
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for rule in lint_rules.iter() {
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print!(" - {}", colors::cyan(rule.code()));
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if rule.tags().is_empty() {
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println!();
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} else {
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println!(" [{}]", colors::gray(rule.tags().join(", ")))
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}
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println!(
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"{}",
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colors::gray(format!(" help: {}", rule.help_docs_url()))
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);
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println!();
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}
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}
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}
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/// Lint stdin and write result to stdout.
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/// Treats input as TypeScript.
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/// Compatible with `--json` flag.
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fn lint_stdin(
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cli_options: &Arc<CliOptions>,
|
|
lint_rule_provider: LintRuleProvider,
|
|
workspace_lint_options: WorkspaceLintOptions,
|
|
lint_flags: LintFlags,
|
|
deno_lint_config: DenoLintConfig,
|
|
) -> Result<bool, AnyError> {
|
|
let start_dir = &cli_options.start_dir;
|
|
let reporter_lock = Arc::new(Mutex::new(create_reporter(
|
|
workspace_lint_options.reporter_kind,
|
|
)));
|
|
let lint_config = start_dir
|
|
.to_lint_config(FilePatterns::new_with_base(start_dir.dir_path()))?;
|
|
let lint_options = LintOptions::resolve(lint_config, &lint_flags);
|
|
let configured_rules = lint_rule_provider.resolve_lint_rules_err_empty(
|
|
lint_options.rules,
|
|
start_dir.maybe_deno_json().map(|c| c.as_ref()),
|
|
)?;
|
|
let mut file_path = cli_options.initial_cwd().join(STDIN_FILE_NAME);
|
|
if let Some(ext) = cli_options.ext_flag() {
|
|
file_path.set_extension(ext);
|
|
}
|
|
let mut source_code = String::new();
|
|
if stdin().read_to_string(&mut source_code).is_err() {
|
|
return Err(generic_error("Failed to read from stdin"));
|
|
}
|
|
|
|
let linter = CliLinter::new(CliLinterOptions {
|
|
fix: false,
|
|
configured_rules,
|
|
deno_lint_config,
|
|
});
|
|
|
|
let r = linter
|
|
.lint_file(&file_path, deno_ast::strip_bom(source_code), None)
|
|
.map_err(AnyError::from);
|
|
|
|
let success =
|
|
handle_lint_result(&file_path.to_string_lossy(), r, reporter_lock.clone());
|
|
reporter_lock.lock().close(1);
|
|
Ok(success)
|
|
}
|
|
|
|
fn handle_lint_result(
|
|
file_path: &str,
|
|
result: Result<(ParsedSource, Vec<LintDiagnostic>), AnyError>,
|
|
reporter_lock: Arc<Mutex<Box<dyn LintReporter + Send>>>,
|
|
) -> bool {
|
|
let mut reporter = reporter_lock.lock();
|
|
|
|
match result {
|
|
Ok((source, mut file_diagnostics)) => {
|
|
if !source.diagnostics().is_empty() {
|
|
for parse_diagnostic in source.diagnostics() {
|
|
log::warn!("{}: {}", colors::yellow("warn"), parse_diagnostic);
|
|
}
|
|
}
|
|
file_diagnostics.sort_by(|a, b| match a.specifier.cmp(&b.specifier) {
|
|
std::cmp::Ordering::Equal => {
|
|
let a_start = a.range.as_ref().map(|r| r.range.start);
|
|
let b_start = b.range.as_ref().map(|r| r.range.start);
|
|
match a_start.cmp(&b_start) {
|
|
std::cmp::Ordering::Equal => a.details.code.cmp(&b.details.code),
|
|
other => other,
|
|
}
|
|
}
|
|
file_order => file_order,
|
|
});
|
|
for d in &file_diagnostics {
|
|
reporter.visit_diagnostic(d);
|
|
}
|
|
file_diagnostics.is_empty()
|
|
}
|
|
Err(err) => {
|
|
reporter.visit_error(file_path, &err);
|
|
false
|
|
}
|
|
}
|
|
}
|
|
|
|
#[derive(Serialize)]
|
|
struct LintError {
|
|
file_path: String,
|
|
message: String,
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::*;
|
|
use pretty_assertions::assert_eq;
|
|
use serde::Deserialize;
|
|
use test_util as util;
|
|
|
|
#[derive(Serialize, Deserialize)]
|
|
struct RulesSchema {
|
|
#[serde(rename = "$schema")]
|
|
schema: String,
|
|
|
|
#[serde(rename = "enum")]
|
|
rules: Vec<String>,
|
|
}
|
|
|
|
fn get_all_rules() -> Vec<String> {
|
|
let rule_provider = LintRuleProvider::new(None, None);
|
|
let configured_rules =
|
|
rule_provider.resolve_lint_rules(Default::default(), None);
|
|
let mut all_rules = configured_rules
|
|
.all_rule_codes
|
|
.into_iter()
|
|
.map(|s| s.to_string())
|
|
.collect::<Vec<String>>();
|
|
all_rules.sort();
|
|
|
|
all_rules
|
|
}
|
|
|
|
// TODO(bartlomieju): do the same for tags, once https://github.com/denoland/deno/pull/27162 lands
|
|
#[test]
|
|
fn all_lint_rules_are_listed_in_schema_file() {
|
|
let all_rules = get_all_rules();
|
|
|
|
let rules_schema_path =
|
|
util::root_path().join("cli/schemas/lint-rules.v1.json");
|
|
let rules_schema_file =
|
|
std::fs::read_to_string(&rules_schema_path).unwrap();
|
|
|
|
let schema: RulesSchema = serde_json::from_str(&rules_schema_file).unwrap();
|
|
|
|
const UPDATE_ENV_VAR_NAME: &str = "UPDATE_EXPECTED";
|
|
|
|
if std::env::var(UPDATE_ENV_VAR_NAME).ok().is_none() {
|
|
assert_eq!(
|
|
schema.rules, all_rules,
|
|
"Lint rules schema file not up to date. Run again with {}=1 to update the expected output",
|
|
UPDATE_ENV_VAR_NAME
|
|
);
|
|
return;
|
|
}
|
|
|
|
std::fs::write(
|
|
&rules_schema_path,
|
|
serde_json::to_string_pretty(&RulesSchema {
|
|
schema: schema.schema,
|
|
rules: all_rules,
|
|
})
|
|
.unwrap(),
|
|
)
|
|
.unwrap();
|
|
}
|
|
}
|