mirror of
https://github.com/denoland/deno
synced 2024-09-13 13:21:50 +00:00
778 lines
22 KiB
Rust
778 lines
22 KiB
Rust
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
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//! This module provides file formatting utilities using
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//! [`dprint-plugin-typescript`](https://github.com/dprint/dprint-plugin-typescript).
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//!
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//! At the moment it is only consumed using CLI but in
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//! the future it can be easily extended to provide
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//! the same functions as ops available in JS runtime.
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use crate::args::CliOptions;
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use crate::args::FilesConfig;
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use crate::args::FmtOptions;
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use crate::args::FmtOptionsConfig;
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use crate::args::ProseWrap;
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use crate::colors;
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use crate::util::diff::diff;
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use crate::util::file_watcher;
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use crate::util::file_watcher::ResolutionResult;
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use crate::util::fs::FileCollector;
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use crate::util::path::get_extension;
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use crate::util::text_encoding;
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use deno_ast::ParsedSource;
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use deno_core::anyhow::anyhow;
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use deno_core::anyhow::bail;
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use deno_core::anyhow::Context;
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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;
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use deno_core::parking_lot::Mutex;
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use log::debug;
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use log::info;
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use log::warn;
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use std::fs;
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use std::io::stdin;
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use std::io::stdout;
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use std::io::Read;
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use std::io::Write;
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use std::path::Path;
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use std::path::PathBuf;
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use std::sync::atomic::AtomicUsize;
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use std::sync::atomic::Ordering;
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use std::sync::Arc;
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use crate::cache::IncrementalCache;
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/// Format JavaScript/TypeScript files.
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pub async fn format(
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cli_options: CliOptions,
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fmt_options: FmtOptions,
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) -> Result<(), AnyError> {
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if fmt_options.is_stdin {
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return format_stdin(fmt_options);
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}
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let files = fmt_options.files;
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let check = fmt_options.check;
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let fmt_config_options = fmt_options.options;
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let resolver = |changed: Option<Vec<PathBuf>>| {
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let files_changed = changed.is_some();
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let result = collect_fmt_files(&files).map(|files| {
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let refmt_files = if let Some(paths) = changed {
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if check {
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files
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.iter()
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.any(|path| paths.contains(path))
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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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.into_iter()
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.filter(|path| paths.contains(path))
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.collect::<Vec<_>>()
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}
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} else {
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files
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};
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(refmt_files, fmt_config_options.clone())
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});
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let paths_to_watch = files.include.clone();
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async move {
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if files_changed
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&& matches!(result, Ok((ref files, _)) if files.is_empty())
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{
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ResolutionResult::Ignore
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} else {
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ResolutionResult::Restart {
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paths_to_watch,
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result,
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}
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}
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}
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};
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let deno_dir = &cli_options.resolve_deno_dir()?;
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let operation = |(paths, fmt_options): (Vec<PathBuf>, FmtOptionsConfig)| async move {
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let incremental_cache = Arc::new(IncrementalCache::new(
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&deno_dir.fmt_incremental_cache_db_file_path(),
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&fmt_options,
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&paths,
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));
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if check {
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check_source_files(paths, fmt_options, incremental_cache.clone()).await?;
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} else {
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format_source_files(paths, fmt_options, incremental_cache.clone())
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.await?;
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}
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incremental_cache.wait_completion().await;
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Ok(())
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};
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if cli_options.watch_paths().is_some() {
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file_watcher::watch_func(
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resolver,
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operation,
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file_watcher::PrintConfig {
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job_name: "Fmt".to_string(),
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clear_screen: !cli_options.no_clear_screen(),
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},
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)
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.await?;
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} else {
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let files = collect_fmt_files(&files).and_then(|files| {
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if files.is_empty() {
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Err(generic_error("No target files found."))
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} else {
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Ok(files)
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}
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})?;
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operation((files, fmt_config_options)).await?;
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}
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Ok(())
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}
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fn collect_fmt_files(files: &FilesConfig) -> Result<Vec<PathBuf>, AnyError> {
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FileCollector::new(is_supported_ext_fmt)
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.ignore_git_folder()
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.ignore_node_modules()
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.add_ignore_paths(&files.exclude)
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.collect_files(&files.include)
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}
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/// Formats markdown (using <https://github.com/dprint/dprint-plugin-markdown>) and its code blocks
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/// (ts/tsx, js/jsx).
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fn format_markdown(
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file_text: &str,
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fmt_options: &FmtOptionsConfig,
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) -> Result<Option<String>, AnyError> {
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let markdown_config = get_resolved_markdown_config(fmt_options);
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dprint_plugin_markdown::format_text(
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file_text,
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&markdown_config,
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move |tag, text, line_width| {
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let tag = tag.to_lowercase();
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if matches!(
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tag.as_str(),
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"ts"
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| "tsx"
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| "js"
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| "jsx"
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| "cjs"
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| "cts"
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| "mjs"
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| "mts"
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| "javascript"
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| "typescript"
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| "json"
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| "jsonc"
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) {
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// It's important to tell dprint proper file extension, otherwise
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// it might parse the file twice.
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let extension = match tag.as_str() {
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"javascript" => "js",
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"typescript" => "ts",
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rest => rest,
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};
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if matches!(extension, "json" | "jsonc") {
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let mut json_config = get_resolved_json_config(fmt_options);
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json_config.line_width = line_width;
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dprint_plugin_json::format_text(text, &json_config)
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} else {
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let fake_filename =
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PathBuf::from(format!("deno_fmt_stdin.{extension}"));
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let mut codeblock_config =
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get_resolved_typescript_config(fmt_options);
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codeblock_config.line_width = line_width;
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dprint_plugin_typescript::format_text(
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&fake_filename,
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text,
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&codeblock_config,
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)
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}
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} else {
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Ok(None)
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}
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},
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)
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}
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/// Formats JSON and JSONC using the rules provided by .deno()
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/// of configuration builder of <https://github.com/dprint/dprint-plugin-json>.
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/// See <https://github.com/dprint/dprint-plugin-json/blob/cfa1052dbfa0b54eb3d814318034cdc514c813d7/src/configuration/builder.rs#L87> for configuration.
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pub fn format_json(
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file_text: &str,
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fmt_options: &FmtOptionsConfig,
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) -> Result<Option<String>, AnyError> {
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let config = get_resolved_json_config(fmt_options);
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dprint_plugin_json::format_text(file_text, &config)
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}
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/// Formats a single TS, TSX, JS, JSX, JSONC, JSON, or MD file.
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pub fn format_file(
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file_path: &Path,
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file_text: &str,
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fmt_options: &FmtOptionsConfig,
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) -> Result<Option<String>, AnyError> {
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let ext = get_extension(file_path).unwrap_or_default();
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if matches!(
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ext.as_str(),
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"md" | "mkd" | "mkdn" | "mdwn" | "mdown" | "markdown"
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) {
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format_markdown(file_text, fmt_options)
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} else if matches!(ext.as_str(), "json" | "jsonc") {
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format_json(file_text, fmt_options)
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} else {
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let config = get_resolved_typescript_config(fmt_options);
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dprint_plugin_typescript::format_text(file_path, file_text, &config)
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}
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}
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pub fn format_parsed_source(
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parsed_source: &ParsedSource,
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fmt_options: &FmtOptionsConfig,
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) -> Result<Option<String>, AnyError> {
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dprint_plugin_typescript::format_parsed_source(
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parsed_source,
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&get_resolved_typescript_config(fmt_options),
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)
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}
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async fn check_source_files(
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paths: Vec<PathBuf>,
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fmt_options: FmtOptionsConfig,
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incremental_cache: Arc<IncrementalCache>,
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) -> Result<(), AnyError> {
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let not_formatted_files_count = Arc::new(AtomicUsize::new(0));
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let checked_files_count = Arc::new(AtomicUsize::new(0));
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// prevent threads outputting at the same time
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let output_lock = Arc::new(Mutex::new(0));
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run_parallelized(paths, {
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let not_formatted_files_count = not_formatted_files_count.clone();
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let checked_files_count = checked_files_count.clone();
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move |file_path| {
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checked_files_count.fetch_add(1, Ordering::Relaxed);
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let file_text = read_file_contents(&file_path)?.text;
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// skip checking the file if we know it's formatted
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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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match format_file(&file_path, &file_text, &fmt_options) {
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Ok(Some(formatted_text)) => {
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not_formatted_files_count.fetch_add(1, Ordering::Relaxed);
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let _g = output_lock.lock();
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let diff = diff(&file_text, &formatted_text);
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info!("");
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info!("{} {}:", colors::bold("from"), file_path.display());
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info!("{}", diff);
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}
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Ok(None) => {
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// When checking formatting, only update the incremental cache when
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// the file is the same since we don't bother checking for stable
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// formatting here. Additionally, ensure this is done during check
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// so that CIs that cache the DENO_DIR will get the benefit of
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// incremental formatting
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incremental_cache.update_file(&file_path, &file_text);
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}
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Err(e) => {
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not_formatted_files_count.fetch_add(1, Ordering::Relaxed);
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let _g = output_lock.lock();
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warn!("Error checking: {}", file_path.to_string_lossy());
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warn!(
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"{}",
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format!("{e}")
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.split('\n')
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.map(|l| {
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if l.trim().is_empty() {
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String::new()
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} else {
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format!(" {l}")
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}
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})
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.collect::<Vec<_>>()
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.join("\n")
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);
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}
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}
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Ok(())
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}
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})
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.await?;
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let not_formatted_files_count =
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not_formatted_files_count.load(Ordering::Relaxed);
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let checked_files_count = checked_files_count.load(Ordering::Relaxed);
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let checked_files_str =
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format!("{} {}", checked_files_count, files_str(checked_files_count));
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if not_formatted_files_count == 0 {
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info!("Checked {}", checked_files_str);
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Ok(())
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} else {
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let not_formatted_files_str = files_str(not_formatted_files_count);
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Err(generic_error(format!(
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"Found {not_formatted_files_count} not formatted {not_formatted_files_str} in {checked_files_str}",
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)))
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}
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}
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async fn format_source_files(
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paths: Vec<PathBuf>,
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fmt_options: FmtOptionsConfig,
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incremental_cache: Arc<IncrementalCache>,
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) -> Result<(), AnyError> {
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let formatted_files_count = Arc::new(AtomicUsize::new(0));
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let checked_files_count = Arc::new(AtomicUsize::new(0));
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let output_lock = Arc::new(Mutex::new(0)); // prevent threads outputting at the same time
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run_parallelized(paths, {
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let formatted_files_count = formatted_files_count.clone();
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let checked_files_count = checked_files_count.clone();
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move |file_path| {
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checked_files_count.fetch_add(1, Ordering::Relaxed);
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let file_contents = read_file_contents(&file_path)?;
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// skip formatting the file if we know it's formatted
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if incremental_cache.is_file_same(&file_path, &file_contents.text) {
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return Ok(());
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}
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match format_ensure_stable(
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&file_path,
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&file_contents.text,
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&fmt_options,
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format_file,
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) {
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Ok(Some(formatted_text)) => {
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incremental_cache.update_file(&file_path, &formatted_text);
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write_file_contents(
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&file_path,
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FileContents {
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had_bom: file_contents.had_bom,
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text: formatted_text,
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},
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)?;
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formatted_files_count.fetch_add(1, Ordering::Relaxed);
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let _g = output_lock.lock();
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info!("{}", file_path.to_string_lossy());
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}
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Ok(None) => {
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incremental_cache.update_file(&file_path, &file_contents.text);
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}
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Err(e) => {
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let _g = output_lock.lock();
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eprintln!("Error formatting: {}", file_path.to_string_lossy());
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eprintln!(" {e}");
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}
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}
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Ok(())
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}
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})
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.await?;
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let formatted_files_count = formatted_files_count.load(Ordering::Relaxed);
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debug!(
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"Formatted {} {}",
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formatted_files_count,
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files_str(formatted_files_count),
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);
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let checked_files_count = checked_files_count.load(Ordering::Relaxed);
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info!(
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"Checked {} {}",
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checked_files_count,
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files_str(checked_files_count)
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);
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Ok(())
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}
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/// When storing any formatted text in the incremental cache, we want
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/// to ensure that anything stored when formatted will have itself as
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/// the output as well. This is to prevent "double format" issues where
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/// a user formats their code locally and it fails on the CI afterwards.
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fn format_ensure_stable(
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file_path: &Path,
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file_text: &str,
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fmt_options: &FmtOptionsConfig,
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fmt_func: impl Fn(
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&Path,
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&str,
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&FmtOptionsConfig,
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) -> Result<Option<String>, AnyError>,
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) -> Result<Option<String>, AnyError> {
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let formatted_text = fmt_func(file_path, file_text, fmt_options)?;
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match formatted_text {
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Some(mut current_text) => {
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let mut count = 0;
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loop {
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match fmt_func(file_path, ¤t_text, fmt_options) {
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Ok(Some(next_pass_text)) => {
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// just in case
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if next_pass_text == current_text {
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return Ok(Some(next_pass_text));
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}
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current_text = next_pass_text;
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}
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Ok(None) => {
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return Ok(Some(current_text));
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}
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Err(err) => {
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panic!(
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concat!(
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"Formatting succeeded initially, but failed when ensuring a ",
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"stable format. This indicates a bug in the formatter where ",
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"the text it produces is not syntatically correct. As a temporary ",
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"workfaround you can ignore this file ({}).\n\n{:#}"
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),
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file_path.display(),
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err,
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)
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}
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}
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count += 1;
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if count == 5 {
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panic!(
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concat!(
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"Formatting not stable. Bailed after {} tries. This indicates a bug ",
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"in the formatter where it formats the file ({}) differently each time. As a ",
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"temporary workaround you can ignore this file."
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),
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count,
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file_path.display(),
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)
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}
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}
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}
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None => Ok(None),
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}
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}
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/// Format stdin and write result to stdout.
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/// Treats input as TypeScript or as set by `--ext` flag.
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/// Compatible with `--check` flag.
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fn format_stdin(fmt_options: FmtOptions) -> Result<(), AnyError> {
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let mut source = String::new();
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if stdin().read_to_string(&mut source).is_err() {
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bail!("Failed to read from stdin");
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}
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let file_path = PathBuf::from(format!("_stdin.{}", fmt_options.ext));
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let formatted_text = format_file(&file_path, &source, &fmt_options.options)?;
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if fmt_options.check {
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if formatted_text.is_some() {
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println!("Not formatted stdin");
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}
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} else {
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stdout().write_all(formatted_text.unwrap_or(source).as_bytes())?;
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}
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Ok(())
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}
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fn files_str(len: usize) -> &'static str {
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if len <= 1 {
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"file"
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} else {
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"files"
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}
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}
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fn get_resolved_typescript_config(
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options: &FmtOptionsConfig,
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) -> dprint_plugin_typescript::configuration::Configuration {
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let mut builder =
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dprint_plugin_typescript::configuration::ConfigurationBuilder::new();
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builder.deno();
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if let Some(use_tabs) = options.use_tabs {
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builder.use_tabs(use_tabs);
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}
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if let Some(line_width) = options.line_width {
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builder.line_width(line_width);
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}
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if let Some(indent_width) = options.indent_width {
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builder.indent_width(indent_width);
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}
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if let Some(single_quote) = options.single_quote {
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if single_quote {
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builder.quote_style(
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dprint_plugin_typescript::configuration::QuoteStyle::AlwaysSingle,
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);
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}
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}
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if let Some(semi_colons) = options.semi_colons {
|
|
builder.semi_colons(match semi_colons {
|
|
true => dprint_plugin_typescript::configuration::SemiColons::Prefer,
|
|
false => dprint_plugin_typescript::configuration::SemiColons::Asi,
|
|
});
|
|
}
|
|
|
|
builder.build()
|
|
}
|
|
|
|
fn get_resolved_markdown_config(
|
|
options: &FmtOptionsConfig,
|
|
) -> dprint_plugin_markdown::configuration::Configuration {
|
|
let mut builder =
|
|
dprint_plugin_markdown::configuration::ConfigurationBuilder::new();
|
|
|
|
builder.deno();
|
|
|
|
if let Some(line_width) = options.line_width {
|
|
builder.line_width(line_width);
|
|
}
|
|
|
|
if let Some(prose_wrap) = options.prose_wrap {
|
|
builder.text_wrap(match prose_wrap {
|
|
ProseWrap::Always => {
|
|
dprint_plugin_markdown::configuration::TextWrap::Always
|
|
}
|
|
ProseWrap::Never => {
|
|
dprint_plugin_markdown::configuration::TextWrap::Never
|
|
}
|
|
ProseWrap::Preserve => {
|
|
dprint_plugin_markdown::configuration::TextWrap::Maintain
|
|
}
|
|
});
|
|
}
|
|
|
|
builder.build()
|
|
}
|
|
|
|
fn get_resolved_json_config(
|
|
options: &FmtOptionsConfig,
|
|
) -> dprint_plugin_json::configuration::Configuration {
|
|
let mut builder =
|
|
dprint_plugin_json::configuration::ConfigurationBuilder::new();
|
|
|
|
builder.deno();
|
|
|
|
if let Some(use_tabs) = options.use_tabs {
|
|
builder.use_tabs(use_tabs);
|
|
}
|
|
|
|
if let Some(line_width) = options.line_width {
|
|
builder.line_width(line_width);
|
|
}
|
|
|
|
if let Some(indent_width) = options.indent_width {
|
|
builder.indent_width(indent_width);
|
|
}
|
|
|
|
builder.build()
|
|
}
|
|
|
|
struct FileContents {
|
|
text: String,
|
|
had_bom: bool,
|
|
}
|
|
|
|
fn read_file_contents(file_path: &Path) -> Result<FileContents, AnyError> {
|
|
let file_bytes = fs::read(file_path)
|
|
.with_context(|| format!("Error reading {}", file_path.display()))?;
|
|
let charset = text_encoding::detect_charset(&file_bytes);
|
|
let file_text = text_encoding::convert_to_utf8(&file_bytes, charset)
|
|
.map_err(|_| {
|
|
anyhow!("{} is not a valid UTF-8 file", file_path.display())
|
|
})?;
|
|
let had_bom = file_text.starts_with(text_encoding::BOM_CHAR);
|
|
let text = if had_bom {
|
|
text_encoding::strip_bom(&file_text).to_string()
|
|
} else {
|
|
file_text.to_string()
|
|
};
|
|
|
|
Ok(FileContents { text, had_bom })
|
|
}
|
|
|
|
fn write_file_contents(
|
|
file_path: &Path,
|
|
file_contents: FileContents,
|
|
) -> Result<(), AnyError> {
|
|
let file_text = if file_contents.had_bom {
|
|
// add back the BOM
|
|
format!("{}{}", text_encoding::BOM_CHAR, file_contents.text)
|
|
} else {
|
|
file_contents.text
|
|
};
|
|
|
|
Ok(fs::write(file_path, file_text)?)
|
|
}
|
|
|
|
pub async fn run_parallelized<F>(
|
|
file_paths: Vec<PathBuf>,
|
|
f: F,
|
|
) -> Result<(), AnyError>
|
|
where
|
|
F: FnOnce(PathBuf) -> Result<(), AnyError> + Send + 'static + Clone,
|
|
{
|
|
let handles = file_paths.iter().map(|file_path| {
|
|
let f = f.clone();
|
|
let file_path = file_path.clone();
|
|
tokio::task::spawn_blocking(move || f(file_path))
|
|
});
|
|
let join_results = futures::future::join_all(handles).await;
|
|
|
|
// find the tasks that panicked and let the user know which files
|
|
let panic_file_paths = join_results
|
|
.iter()
|
|
.enumerate()
|
|
.filter_map(|(i, join_result)| {
|
|
join_result
|
|
.as_ref()
|
|
.err()
|
|
.map(|_| file_paths[i].to_string_lossy())
|
|
})
|
|
.collect::<Vec<_>>();
|
|
if !panic_file_paths.is_empty() {
|
|
panic!("Panic formatting: {}", panic_file_paths.join(", "))
|
|
}
|
|
|
|
// check for any errors and if so return the first one
|
|
let mut errors = join_results.into_iter().filter_map(|join_result| {
|
|
join_result
|
|
.ok()
|
|
.and_then(|handle_result| handle_result.err())
|
|
});
|
|
|
|
if let Some(e) = errors.next() {
|
|
Err(e)
|
|
} else {
|
|
Ok(())
|
|
}
|
|
}
|
|
|
|
/// This function is similar to is_supported_ext but adds additional extensions
|
|
/// supported by `deno fmt`.
|
|
fn is_supported_ext_fmt(path: &Path) -> bool {
|
|
if let Some(ext) = get_extension(path) {
|
|
matches!(
|
|
ext.as_str(),
|
|
"ts"
|
|
| "tsx"
|
|
| "js"
|
|
| "jsx"
|
|
| "cjs"
|
|
| "cts"
|
|
| "mjs"
|
|
| "mts"
|
|
| "json"
|
|
| "jsonc"
|
|
| "md"
|
|
| "mkd"
|
|
| "mkdn"
|
|
| "mdwn"
|
|
| "mdown"
|
|
| "markdown"
|
|
)
|
|
} else {
|
|
false
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod test {
|
|
use super::*;
|
|
|
|
#[test]
|
|
fn test_is_supported_ext_fmt() {
|
|
assert!(!is_supported_ext_fmt(Path::new("tests/subdir/redirects")));
|
|
assert!(is_supported_ext_fmt(Path::new("README.md")));
|
|
assert!(is_supported_ext_fmt(Path::new("readme.MD")));
|
|
assert!(is_supported_ext_fmt(Path::new("readme.mkd")));
|
|
assert!(is_supported_ext_fmt(Path::new("readme.mkdn")));
|
|
assert!(is_supported_ext_fmt(Path::new("readme.mdwn")));
|
|
assert!(is_supported_ext_fmt(Path::new("readme.mdown")));
|
|
assert!(is_supported_ext_fmt(Path::new("readme.markdown")));
|
|
assert!(is_supported_ext_fmt(Path::new("lib/typescript.d.ts")));
|
|
assert!(is_supported_ext_fmt(Path::new("testdata/run/001_hello.js")));
|
|
assert!(is_supported_ext_fmt(Path::new("testdata/run/002_hello.ts")));
|
|
assert!(is_supported_ext_fmt(Path::new("foo.jsx")));
|
|
assert!(is_supported_ext_fmt(Path::new("foo.tsx")));
|
|
assert!(is_supported_ext_fmt(Path::new("foo.TS")));
|
|
assert!(is_supported_ext_fmt(Path::new("foo.TSX")));
|
|
assert!(is_supported_ext_fmt(Path::new("foo.JS")));
|
|
assert!(is_supported_ext_fmt(Path::new("foo.JSX")));
|
|
assert!(is_supported_ext_fmt(Path::new("foo.mjs")));
|
|
assert!(!is_supported_ext_fmt(Path::new("foo.mjsx")));
|
|
assert!(is_supported_ext_fmt(Path::new("foo.jsonc")));
|
|
assert!(is_supported_ext_fmt(Path::new("foo.JSONC")));
|
|
assert!(is_supported_ext_fmt(Path::new("foo.json")));
|
|
assert!(is_supported_ext_fmt(Path::new("foo.JsON")));
|
|
}
|
|
|
|
#[test]
|
|
#[should_panic(expected = "Formatting not stable. Bailed after 5 tries.")]
|
|
fn test_format_ensure_stable_unstable_format() {
|
|
format_ensure_stable(
|
|
&PathBuf::from("mod.ts"),
|
|
"1",
|
|
&Default::default(),
|
|
|_, file_text, _| Ok(Some(format!("1{file_text}"))),
|
|
)
|
|
.unwrap();
|
|
}
|
|
|
|
#[test]
|
|
fn test_format_ensure_stable_error_first() {
|
|
let err = format_ensure_stable(
|
|
&PathBuf::from("mod.ts"),
|
|
"1",
|
|
&Default::default(),
|
|
|_, _, _| bail!("Error formatting."),
|
|
)
|
|
.unwrap_err();
|
|
|
|
assert_eq!(err.to_string(), "Error formatting.");
|
|
}
|
|
|
|
#[test]
|
|
#[should_panic(expected = "Formatting succeeded initially, but failed when")]
|
|
fn test_format_ensure_stable_error_second() {
|
|
format_ensure_stable(
|
|
&PathBuf::from("mod.ts"),
|
|
"1",
|
|
&Default::default(),
|
|
|_, file_text, _| {
|
|
if file_text == "1" {
|
|
Ok(Some("11".to_string()))
|
|
} else {
|
|
bail!("Error formatting.")
|
|
}
|
|
},
|
|
)
|
|
.unwrap();
|
|
}
|
|
|
|
#[test]
|
|
fn test_format_stable_after_two() {
|
|
let result = format_ensure_stable(
|
|
&PathBuf::from("mod.ts"),
|
|
"1",
|
|
&Default::default(),
|
|
|_, file_text, _| {
|
|
if file_text == "1" {
|
|
Ok(Some("11".to_string()))
|
|
} else if file_text == "11" {
|
|
Ok(None)
|
|
} else {
|
|
unreachable!();
|
|
}
|
|
},
|
|
)
|
|
.unwrap();
|
|
|
|
assert_eq!(result, Some("11".to_string()));
|
|
}
|
|
}
|