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denoland-deno/cli/tools/repl/mod.rs
David Sherret 386d5c8310
refactor: remove PermissionsContainer in deno_runtime (#24119)
Also removes permissions being passed in for node resolution. It was
completely useless because we only checked it for reading package.json
files, but Deno reading package.json files for resolution is perfectly
fine.

My guess is this is also a perf improvement because Deno is doing less
work.
2024-06-06 23:37:53 -04:00

255 lines
7.6 KiB
Rust

// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
use std::sync::Arc;
use crate::args::CliOptions;
use crate::args::Flags;
use crate::args::ReplFlags;
use crate::cdp;
use crate::colors;
use crate::factory::CliFactory;
use crate::file_fetcher::FileFetcher;
use deno_core::error::AnyError;
use deno_core::futures::StreamExt;
use deno_core::serde_json;
use deno_core::unsync::spawn_blocking;
use deno_runtime::deno_permissions::Permissions;
use deno_runtime::deno_permissions::PermissionsContainer;
use deno_runtime::WorkerExecutionMode;
use rustyline::error::ReadlineError;
mod channel;
mod editor;
mod session;
use channel::rustyline_channel;
use channel::RustylineSyncMessage;
use channel::RustylineSyncMessageHandler;
use channel::RustylineSyncResponse;
use editor::EditorHelper;
use editor::ReplEditor;
pub use session::EvaluationOutput;
pub use session::ReplSession;
pub use session::REPL_INTERNALS_NAME;
use super::test::create_single_test_event_channel;
struct Repl {
session: ReplSession,
editor: ReplEditor,
message_handler: RustylineSyncMessageHandler,
}
#[allow(clippy::print_stdout)]
impl Repl {
async fn run(&mut self) -> Result<(), AnyError> {
loop {
let line = read_line_and_poll(
&mut self.session,
&mut self.message_handler,
self.editor.clone(),
)
.await;
match line {
Ok(line) => {
self.editor.set_should_exit_on_interrupt(false);
self.editor.update_history(line.clone());
let output = self.session.evaluate_line_and_get_output(&line).await;
// We check for close and break here instead of making it a loop condition to get
// consistent behavior in when the user evaluates a call to close().
if self.session.closing().await? {
break;
}
println!("{}", output);
}
Err(ReadlineError::Interrupted) => {
if self.editor.should_exit_on_interrupt() {
break;
}
self.editor.set_should_exit_on_interrupt(true);
println!("press ctrl+c again to exit");
continue;
}
Err(ReadlineError::Eof) => {
break;
}
Err(err) => {
println!("Error: {:?}", err);
break;
}
}
}
Ok(())
}
}
#[allow(clippy::print_stdout)]
async fn read_line_and_poll(
repl_session: &mut ReplSession,
message_handler: &mut RustylineSyncMessageHandler,
editor: ReplEditor,
) -> Result<String, ReadlineError> {
let mut line_fut = spawn_blocking(move || editor.readline());
let mut poll_worker = true;
let notifications_rc = repl_session.notifications.clone();
let mut notifications = notifications_rc.lock().await;
loop {
tokio::select! {
result = &mut line_fut => {
return result.unwrap();
}
result = message_handler.recv() => {
match result {
Some(RustylineSyncMessage::PostMessage { method, params }) => {
let result = repl_session
.post_message_with_event_loop(&method, params)
.await;
message_handler.send(RustylineSyncResponse::PostMessage(result)).unwrap();
},
Some(RustylineSyncMessage::LspCompletions {
line_text,
position,
}) => {
let result = repl_session.language_server.completions(&line_text, position).await;
message_handler.send(RustylineSyncResponse::LspCompletions(result)).unwrap();
}
None => {}, // channel closed
}
poll_worker = true;
}
message = notifications.next() => {
if let Some(message) = message {
let notification: cdp::Notification = serde_json::from_value(message).unwrap();
if notification.method == "Runtime.exceptionThrown" {
let exception_thrown: cdp::ExceptionThrown = serde_json::from_value(notification.params).unwrap();
let (message, description) = exception_thrown.exception_details.get_message_and_description();
println!("{} {}", message, description);
}
}
}
_ = repl_session.run_event_loop(), if poll_worker => {
poll_worker = false;
}
}
}
}
async fn read_eval_file(
cli_options: &CliOptions,
file_fetcher: &FileFetcher,
eval_file: &str,
) -> Result<Arc<str>, AnyError> {
let specifier =
deno_core::resolve_url_or_path(eval_file, cli_options.initial_cwd())?;
let file = file_fetcher
.fetch(&specifier, &PermissionsContainer::allow_all())
.await?;
Ok(file.into_text_decoded()?.source)
}
#[allow(clippy::print_stdout)]
pub async fn run(flags: Flags, repl_flags: ReplFlags) -> Result<i32, AnyError> {
let factory = CliFactory::from_flags(flags)?;
let cli_options = factory.cli_options();
let main_module = cli_options.resolve_main_module()?;
let permissions = PermissionsContainer::new(Permissions::from_options(
&cli_options.permissions_options()?,
)?);
let npm_resolver = factory.npm_resolver().await?.clone();
let resolver = factory.resolver().await?.clone();
let file_fetcher = factory.file_fetcher()?;
let worker_factory = factory.create_cli_main_worker_factory().await?;
let history_file_path = factory
.deno_dir()
.ok()
.and_then(|dir| dir.repl_history_file_path());
let (worker, test_event_receiver) = create_single_test_event_channel();
let test_event_sender = worker.sender;
let mut worker = worker_factory
.create_custom_worker(
WorkerExecutionMode::Repl,
main_module.clone(),
permissions,
vec![crate::ops::testing::deno_test::init_ops(test_event_sender)],
Default::default(),
)
.await?;
worker.setup_repl().await?;
let worker = worker.into_main_worker();
let session = ReplSession::initialize(
cli_options,
npm_resolver,
resolver,
worker,
main_module,
test_event_receiver,
)
.await?;
let rustyline_channel = rustyline_channel();
let helper = EditorHelper {
context_id: session.context_id,
sync_sender: rustyline_channel.0,
};
let editor = ReplEditor::new(helper, history_file_path)?;
let mut repl = Repl {
session,
editor,
message_handler: rustyline_channel.1,
};
if let Some(eval_files) = repl_flags.eval_files {
for eval_file in eval_files {
match read_eval_file(cli_options, file_fetcher, &eval_file).await {
Ok(eval_source) => {
let output = repl
.session
.evaluate_line_and_get_output(&eval_source)
.await;
// only output errors
if let EvaluationOutput::Error(error_text) = output {
println!("Error in --eval-file file \"{eval_file}\": {error_text}");
}
}
Err(e) => {
println!("Error in --eval-file file \"{eval_file}\": {e}");
}
}
}
}
if let Some(eval) = repl_flags.eval {
let output = repl.session.evaluate_line_and_get_output(&eval).await;
// only output errors
if let EvaluationOutput::Error(error_text) = output {
println!("Error in --eval flag: {error_text}");
}
}
// Doing this manually, instead of using `log::info!` because these messages
// are supposed to go to stdout, not stderr.
if !cli_options.is_quiet() {
println!("Deno {}", crate::version::deno());
println!("exit using ctrl+d, ctrl+c, or close()");
if repl_flags.is_default_command {
println!(
"{}",
colors::yellow("REPL is running with all permissions allowed.")
);
println!("To specify permissions, run `deno repl` with allow flags.")
}
}
repl.run().await?;
Ok(repl.session.worker.exit_code())
}