mirror of
https://github.com/denoland/deno.git
synced 2024-11-14 16:33:45 -05:00
577 lines
15 KiB
Rust
577 lines
15 KiB
Rust
// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
|
|
|
|
//! This module provides file linting utilities using
|
|
//! [`deno_lint`](https://github.com/denoland/deno_lint).
|
|
//!
|
|
//! At the moment it is only consumed using CLI but in
|
|
//! the future it can be easily extended to provide
|
|
//! the same functions as ops available in JS runtime.
|
|
use crate::config_file::LintConfig;
|
|
use crate::file_watcher::ResolutionResult;
|
|
use crate::flags::LintFlags;
|
|
use crate::fmt_errors;
|
|
use crate::fs_util::{collect_files, is_supported_ext, specifier_to_file_path};
|
|
use crate::tools::fmt::run_parallelized;
|
|
use crate::{colors, file_watcher};
|
|
use deno_ast::MediaType;
|
|
use deno_core::anyhow::anyhow;
|
|
use deno_core::error::generic_error;
|
|
use deno_core::error::AnyError;
|
|
use deno_core::error::JsStackFrame;
|
|
use deno_core::serde_json;
|
|
use deno_lint::diagnostic::LintDiagnostic;
|
|
use deno_lint::linter::Linter;
|
|
use deno_lint::linter::LinterBuilder;
|
|
use deno_lint::rules;
|
|
use deno_lint::rules::LintRule;
|
|
use log::debug;
|
|
use log::info;
|
|
use serde::Serialize;
|
|
use std::fs;
|
|
use std::io::{stdin, Read};
|
|
use std::path::PathBuf;
|
|
use std::sync::atomic::{AtomicBool, Ordering};
|
|
use std::sync::{Arc, Mutex};
|
|
|
|
static STDIN_FILE_NAME: &str = "_stdin.ts";
|
|
|
|
#[derive(Clone, Debug)]
|
|
pub enum LintReporterKind {
|
|
Pretty,
|
|
Json,
|
|
}
|
|
|
|
fn create_reporter(kind: LintReporterKind) -> Box<dyn LintReporter + Send> {
|
|
match kind {
|
|
LintReporterKind::Pretty => Box::new(PrettyLintReporter::new()),
|
|
LintReporterKind::Json => Box::new(JsonLintReporter::new()),
|
|
}
|
|
}
|
|
|
|
pub async fn lint(
|
|
maybe_lint_config: Option<LintConfig>,
|
|
lint_flags: LintFlags,
|
|
watch: bool,
|
|
) -> Result<(), AnyError> {
|
|
let LintFlags {
|
|
maybe_rules_tags,
|
|
maybe_rules_include,
|
|
maybe_rules_exclude,
|
|
files: args,
|
|
ignore,
|
|
json,
|
|
..
|
|
} = lint_flags;
|
|
// First, prepare final configuration.
|
|
// Collect included and ignored files. CLI flags take precendence
|
|
// over config file, ie. if there's `files.ignore` in config file
|
|
// and `--ignore` CLI flag, only the flag value is taken into account.
|
|
let mut include_files = args.clone();
|
|
let mut exclude_files = ignore.clone();
|
|
|
|
if let Some(lint_config) = maybe_lint_config.as_ref() {
|
|
if include_files.is_empty() {
|
|
include_files = lint_config
|
|
.files
|
|
.include
|
|
.iter()
|
|
.filter_map(|s| specifier_to_file_path(s).ok())
|
|
.collect::<Vec<_>>();
|
|
}
|
|
|
|
if exclude_files.is_empty() {
|
|
exclude_files = lint_config
|
|
.files
|
|
.exclude
|
|
.iter()
|
|
.filter_map(|s| specifier_to_file_path(s).ok())
|
|
.collect::<Vec<_>>();
|
|
}
|
|
}
|
|
|
|
if include_files.is_empty() {
|
|
include_files = [std::env::current_dir()?].to_vec();
|
|
}
|
|
|
|
let reporter_kind = if json {
|
|
LintReporterKind::Json
|
|
} else {
|
|
LintReporterKind::Pretty
|
|
};
|
|
|
|
let has_error = Arc::new(AtomicBool::new(false));
|
|
// Try to get configured rules. CLI flags take precendence
|
|
// over config file, ie. if there's `rules.include` in config file
|
|
// and `--rules-include` CLI flag, only the flag value is taken into account.
|
|
let lint_rules = get_configured_rules(
|
|
maybe_lint_config.as_ref(),
|
|
maybe_rules_tags,
|
|
maybe_rules_include,
|
|
maybe_rules_exclude,
|
|
)?;
|
|
|
|
let resolver = |changed: Option<Vec<PathBuf>>| {
|
|
let files_changed = changed.is_some();
|
|
let result =
|
|
collect_files(&include_files, &exclude_files, is_supported_ext).map(
|
|
|files| {
|
|
if let Some(paths) = changed {
|
|
files
|
|
.iter()
|
|
.any(|path| paths.contains(path))
|
|
.then(|| files)
|
|
.unwrap_or_else(|| [].to_vec())
|
|
} else {
|
|
files
|
|
}
|
|
},
|
|
);
|
|
|
|
let paths_to_watch = include_files.clone();
|
|
|
|
async move {
|
|
if files_changed && matches!(result, Ok(ref files) if files.is_empty()) {
|
|
ResolutionResult::Ignore
|
|
} else {
|
|
ResolutionResult::Restart {
|
|
paths_to_watch,
|
|
result,
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
let operation = |paths: Vec<PathBuf>| async {
|
|
let target_files_len = paths.len();
|
|
let reporter_kind = reporter_kind.clone();
|
|
let reporter_lock = Arc::new(Mutex::new(create_reporter(reporter_kind)));
|
|
run_parallelized(paths, {
|
|
let has_error = has_error.clone();
|
|
let lint_rules = lint_rules.clone();
|
|
let reporter_lock = reporter_lock.clone();
|
|
move |file_path| {
|
|
let r = lint_file(file_path.clone(), lint_rules.clone());
|
|
handle_lint_result(
|
|
&file_path.to_string_lossy(),
|
|
r,
|
|
reporter_lock.clone(),
|
|
has_error,
|
|
);
|
|
|
|
Ok(())
|
|
}
|
|
})
|
|
.await?;
|
|
reporter_lock.lock().unwrap().close(target_files_len);
|
|
|
|
Ok(())
|
|
};
|
|
if watch {
|
|
if args.len() == 1 && args[0].to_string_lossy() == "-" {
|
|
return Err(generic_error(
|
|
"Lint watch on standard input is not supported.",
|
|
));
|
|
}
|
|
file_watcher::watch_func(resolver, operation, "Lint").await?;
|
|
} else {
|
|
if args.len() == 1 && args[0].to_string_lossy() == "-" {
|
|
let reporter_lock =
|
|
Arc::new(Mutex::new(create_reporter(reporter_kind.clone())));
|
|
let r = lint_stdin(lint_rules);
|
|
handle_lint_result(
|
|
STDIN_FILE_NAME,
|
|
r,
|
|
reporter_lock.clone(),
|
|
has_error.clone(),
|
|
);
|
|
reporter_lock.lock().unwrap().close(1);
|
|
} else {
|
|
let target_files =
|
|
collect_files(&include_files, &exclude_files, is_supported_ext)
|
|
.and_then(|files| {
|
|
if files.is_empty() {
|
|
Err(generic_error("No target files found."))
|
|
} else {
|
|
Ok(files)
|
|
}
|
|
})?;
|
|
debug!("Found {} files", target_files.len());
|
|
operation(target_files).await?;
|
|
};
|
|
let has_error = has_error.load(Ordering::Relaxed);
|
|
if has_error {
|
|
std::process::exit(1);
|
|
}
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
pub fn print_rules_list(json: bool) {
|
|
let lint_rules = rules::get_recommended_rules();
|
|
|
|
if json {
|
|
let json_rules: Vec<serde_json::Value> = lint_rules
|
|
.iter()
|
|
.map(|rule| {
|
|
serde_json::json!({
|
|
"code": rule.code(),
|
|
"tags": rule.tags(),
|
|
"docs": rule.docs(),
|
|
})
|
|
})
|
|
.collect();
|
|
let json_str = serde_json::to_string_pretty(&json_rules).unwrap();
|
|
println!("{}", json_str);
|
|
} else {
|
|
// The rules should still be printed even if `--quiet` option is enabled,
|
|
// so use `println!` here instead of `info!`.
|
|
println!("Available rules:");
|
|
for rule in lint_rules.iter() {
|
|
println!(" - {}", rule.code());
|
|
println!(" help: https://lint.deno.land/#{}", rule.code());
|
|
println!();
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn create_linter(
|
|
media_type: MediaType,
|
|
rules: Vec<Arc<dyn LintRule>>,
|
|
) -> Linter {
|
|
LinterBuilder::default()
|
|
.ignore_file_directive("deno-lint-ignore-file")
|
|
.ignore_diagnostic_directive("deno-lint-ignore")
|
|
.media_type(media_type)
|
|
.rules(rules)
|
|
.build()
|
|
}
|
|
|
|
fn lint_file(
|
|
file_path: PathBuf,
|
|
lint_rules: Vec<Arc<dyn LintRule>>,
|
|
) -> Result<(Vec<LintDiagnostic>, String), AnyError> {
|
|
let file_name = file_path.to_string_lossy().to_string();
|
|
let source_code = fs::read_to_string(&file_path)?;
|
|
let media_type = MediaType::from(&file_path);
|
|
|
|
let linter = create_linter(media_type, lint_rules);
|
|
|
|
let (_, file_diagnostics) = linter.lint(file_name, source_code.clone())?;
|
|
|
|
Ok((file_diagnostics, source_code))
|
|
}
|
|
|
|
/// Lint stdin and write result to stdout.
|
|
/// Treats input as TypeScript.
|
|
/// Compatible with `--json` flag.
|
|
fn lint_stdin(
|
|
lint_rules: Vec<Arc<dyn LintRule>>,
|
|
) -> Result<(Vec<LintDiagnostic>, String), AnyError> {
|
|
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 = create_linter(MediaType::TypeScript, lint_rules);
|
|
|
|
let (_, file_diagnostics) =
|
|
linter.lint(STDIN_FILE_NAME.to_string(), source_code.clone())?;
|
|
|
|
Ok((file_diagnostics, source_code))
|
|
}
|
|
|
|
fn handle_lint_result(
|
|
file_path: &str,
|
|
result: Result<(Vec<LintDiagnostic>, String), AnyError>,
|
|
reporter_lock: Arc<Mutex<Box<dyn LintReporter + Send>>>,
|
|
has_error: Arc<AtomicBool>,
|
|
) {
|
|
let mut reporter = reporter_lock.lock().unwrap();
|
|
|
|
match result {
|
|
Ok((mut file_diagnostics, source)) => {
|
|
sort_diagnostics(&mut file_diagnostics);
|
|
for d in file_diagnostics.iter() {
|
|
has_error.store(true, Ordering::Relaxed);
|
|
reporter.visit_diagnostic(d, source.split('\n').collect());
|
|
}
|
|
}
|
|
Err(err) => {
|
|
has_error.store(true, Ordering::Relaxed);
|
|
reporter.visit_error(file_path, &err);
|
|
}
|
|
}
|
|
}
|
|
|
|
trait LintReporter {
|
|
fn visit_diagnostic(&mut self, d: &LintDiagnostic, source_lines: Vec<&str>);
|
|
fn visit_error(&mut self, file_path: &str, err: &AnyError);
|
|
fn close(&mut self, check_count: usize);
|
|
}
|
|
|
|
#[derive(Serialize)]
|
|
struct LintError {
|
|
file_path: String,
|
|
message: String,
|
|
}
|
|
|
|
struct PrettyLintReporter {
|
|
lint_count: u32,
|
|
}
|
|
|
|
impl PrettyLintReporter {
|
|
fn new() -> PrettyLintReporter {
|
|
PrettyLintReporter { lint_count: 0 }
|
|
}
|
|
}
|
|
|
|
impl LintReporter for PrettyLintReporter {
|
|
fn visit_diagnostic(&mut self, d: &LintDiagnostic, source_lines: Vec<&str>) {
|
|
self.lint_count += 1;
|
|
|
|
let pretty_message = format!("({}) {}", colors::red(&d.code), &d.message);
|
|
|
|
let message = format_diagnostic(
|
|
&d.code,
|
|
&pretty_message,
|
|
&source_lines,
|
|
d.range.clone(),
|
|
d.hint.as_ref(),
|
|
&fmt_errors::format_location(&JsStackFrame::from_location(
|
|
Some(d.filename.clone()),
|
|
Some(d.range.start.line_index as i64 + 1), // 1-indexed
|
|
// todo(#11111): make 1-indexed as well
|
|
Some(d.range.start.column_index as i64),
|
|
)),
|
|
);
|
|
|
|
eprintln!("{}\n", message);
|
|
}
|
|
|
|
fn visit_error(&mut self, file_path: &str, err: &AnyError) {
|
|
eprintln!("Error linting: {}", file_path);
|
|
eprintln!(" {}", err);
|
|
}
|
|
|
|
fn close(&mut self, check_count: usize) {
|
|
match self.lint_count {
|
|
1 => info!("Found 1 problem"),
|
|
n if n > 1 => info!("Found {} problems", self.lint_count),
|
|
_ => (),
|
|
}
|
|
|
|
match check_count {
|
|
n if n <= 1 => info!("Checked {} file", n),
|
|
n if n > 1 => info!("Checked {} files", n),
|
|
_ => unreachable!(),
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn format_diagnostic(
|
|
diagnostic_code: &str,
|
|
message_line: &str,
|
|
source_lines: &[&str],
|
|
range: deno_lint::diagnostic::Range,
|
|
maybe_hint: Option<&String>,
|
|
formatted_location: &str,
|
|
) -> String {
|
|
let mut lines = vec![];
|
|
|
|
for (i, line) in source_lines
|
|
.iter()
|
|
.enumerate()
|
|
.take(range.end.line_index + 1)
|
|
.skip(range.start.line_index)
|
|
{
|
|
lines.push(line.to_string());
|
|
if range.start.line_index == range.end.line_index {
|
|
lines.push(format!(
|
|
"{}{}",
|
|
" ".repeat(range.start.column_index),
|
|
colors::red(
|
|
&"^".repeat(range.end.column_index - range.start.column_index)
|
|
)
|
|
));
|
|
} else {
|
|
let line_len = line.len();
|
|
if range.start.line_index == i {
|
|
lines.push(format!(
|
|
"{}{}",
|
|
" ".repeat(range.start.column_index),
|
|
colors::red(&"^".repeat(line_len - range.start.column_index))
|
|
));
|
|
} else if range.end.line_index == i {
|
|
lines
|
|
.push(colors::red(&"^".repeat(range.end.column_index)).to_string());
|
|
} else if line_len != 0 {
|
|
lines.push(colors::red(&"^".repeat(line_len)).to_string());
|
|
}
|
|
}
|
|
}
|
|
|
|
let hint = if let Some(hint) = maybe_hint {
|
|
format!(" {} {}\n", colors::cyan("hint:"), hint)
|
|
} else {
|
|
"".to_string()
|
|
};
|
|
let help = format!(
|
|
" {} for further information visit https://lint.deno.land/#{}",
|
|
colors::cyan("help:"),
|
|
diagnostic_code
|
|
);
|
|
|
|
format!(
|
|
"{message_line}\n{snippets}\n at {formatted_location}\n\n{hint}{help}",
|
|
message_line = message_line,
|
|
snippets = lines.join("\n"),
|
|
formatted_location = formatted_location,
|
|
hint = hint,
|
|
help = help
|
|
)
|
|
}
|
|
|
|
#[derive(Serialize)]
|
|
struct JsonLintReporter {
|
|
diagnostics: Vec<LintDiagnostic>,
|
|
errors: Vec<LintError>,
|
|
}
|
|
|
|
impl JsonLintReporter {
|
|
fn new() -> JsonLintReporter {
|
|
JsonLintReporter {
|
|
diagnostics: Vec::new(),
|
|
errors: Vec::new(),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl LintReporter for JsonLintReporter {
|
|
fn visit_diagnostic(&mut self, d: &LintDiagnostic, _source_lines: Vec<&str>) {
|
|
self.diagnostics.push(d.clone());
|
|
}
|
|
|
|
fn visit_error(&mut self, file_path: &str, err: &AnyError) {
|
|
self.errors.push(LintError {
|
|
file_path: file_path.to_string(),
|
|
message: err.to_string(),
|
|
});
|
|
}
|
|
|
|
fn close(&mut self, _check_count: usize) {
|
|
sort_diagnostics(&mut self.diagnostics);
|
|
let json = serde_json::to_string_pretty(&self);
|
|
println!("{}", json.unwrap());
|
|
}
|
|
}
|
|
|
|
fn sort_diagnostics(diagnostics: &mut Vec<LintDiagnostic>) {
|
|
// Sort so that we guarantee a deterministic output which is useful for tests
|
|
diagnostics.sort_by(|a, b| {
|
|
use std::cmp::Ordering;
|
|
let file_order = a.filename.cmp(&b.filename);
|
|
match file_order {
|
|
Ordering::Equal => {
|
|
let line_order =
|
|
a.range.start.line_index.cmp(&b.range.start.line_index);
|
|
match line_order {
|
|
Ordering::Equal => {
|
|
a.range.start.column_index.cmp(&b.range.start.column_index)
|
|
}
|
|
_ => line_order,
|
|
}
|
|
}
|
|
_ => file_order,
|
|
}
|
|
});
|
|
}
|
|
|
|
pub(crate) fn get_configured_rules(
|
|
maybe_lint_config: Option<&LintConfig>,
|
|
maybe_rules_tags: Option<Vec<String>>,
|
|
maybe_rules_include: Option<Vec<String>>,
|
|
maybe_rules_exclude: Option<Vec<String>>,
|
|
) -> Result<Vec<Arc<dyn LintRule>>, AnyError> {
|
|
if maybe_lint_config.is_none()
|
|
&& maybe_rules_tags.is_none()
|
|
&& maybe_rules_include.is_none()
|
|
&& maybe_rules_exclude.is_none()
|
|
{
|
|
return Ok(rules::get_recommended_rules());
|
|
}
|
|
|
|
let (config_file_tags, config_file_include, config_file_exclude) =
|
|
if let Some(lint_config) = maybe_lint_config {
|
|
(
|
|
lint_config.rules.tags.clone(),
|
|
lint_config.rules.include.clone(),
|
|
lint_config.rules.exclude.clone(),
|
|
)
|
|
} else {
|
|
(None, None, None)
|
|
};
|
|
|
|
let maybe_configured_include = if maybe_rules_include.is_some() {
|
|
maybe_rules_include
|
|
} else {
|
|
config_file_include
|
|
};
|
|
|
|
let maybe_configured_exclude = if maybe_rules_exclude.is_some() {
|
|
maybe_rules_exclude
|
|
} else {
|
|
config_file_exclude
|
|
};
|
|
|
|
let maybe_configured_tags = if maybe_rules_tags.is_some() {
|
|
maybe_rules_tags
|
|
} else {
|
|
config_file_tags
|
|
};
|
|
|
|
let configured_rules = rules::get_filtered_rules(
|
|
maybe_configured_tags.or_else(|| Some(vec!["recommended".to_string()])),
|
|
maybe_configured_exclude,
|
|
maybe_configured_include,
|
|
);
|
|
|
|
if configured_rules.is_empty() {
|
|
anyhow!("No rules have been configured");
|
|
}
|
|
|
|
Ok(configured_rules)
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod test {
|
|
use deno_lint::rules::get_recommended_rules;
|
|
|
|
use super::*;
|
|
use crate::config_file::LintRulesConfig;
|
|
|
|
#[test]
|
|
fn recommended_rules_when_no_tags_in_config() {
|
|
let lint_config = LintConfig {
|
|
rules: LintRulesConfig {
|
|
exclude: Some(vec!["no-debugger".to_string()]),
|
|
..Default::default()
|
|
},
|
|
..Default::default()
|
|
};
|
|
let rules =
|
|
get_configured_rules(Some(&lint_config), None, None, None).unwrap();
|
|
let mut rule_names = rules
|
|
.into_iter()
|
|
.map(|r| r.code().to_string())
|
|
.collect::<Vec<_>>();
|
|
rule_names.sort();
|
|
let mut recommended_rule_names = get_recommended_rules()
|
|
.into_iter()
|
|
.map(|r| r.code().to_string())
|
|
.filter(|n| n != "no-debugger")
|
|
.collect::<Vec<_>>();
|
|
recommended_rule_names.sort();
|
|
assert_eq!(rule_names, recommended_rule_names);
|
|
}
|
|
}
|