1
0
Fork 0
mirror of https://github.com/denoland/deno.git synced 2024-12-13 02:52:54 -05:00
denoland-deno/cli/tools/repl/mod.rs
Bartek Iwańczuk 1964172bf6 refactor(core): resolve_url_or_path and resolve_url_or_path_deprecated (#18170)
This commit changes current "deno_core::resolve_url_or_path" API to
"resolve_url_or_path_deprecated" and adds new "resolve_url_or_path"
API that requires to explicitly pass the directory from which paths
should be resolved to. 

Some of the call sites were updated to use the new API, the reminder
of them will be updated in a follow up PR.

Towards landing https://github.com/denoland/deno/pull/15454
2023-03-16 11:56:53 +09:00

189 lines
5.4 KiB
Rust

// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
use crate::args::Flags;
use crate::args::ReplFlags;
use crate::colors;
use crate::proc_state::ProcState;
use crate::worker::create_main_worker;
use deno_core::error::AnyError;
use deno_core::resolve_path;
use deno_runtime::permissions::Permissions;
use deno_runtime::permissions::PermissionsContainer;
use rustyline::error::ReadlineError;
mod cdp;
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;
use session::EvaluationOutput;
use session::ReplSession;
async fn read_line_and_poll(
repl_session: &mut ReplSession,
message_handler: &mut RustylineSyncMessageHandler,
editor: ReplEditor,
) -> Result<String, ReadlineError> {
let mut line_fut = tokio::task::spawn_blocking(move || editor.readline());
let mut poll_worker = true;
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;
},
_ = repl_session.run_event_loop(), if poll_worker => {
poll_worker = false;
}
}
}
}
async fn read_eval_file(
ps: &ProcState,
eval_file: &str,
) -> Result<String, AnyError> {
let specifier =
deno_core::resolve_url_or_path(eval_file, ps.options.initial_cwd())?;
let file = ps
.file_fetcher
.fetch(&specifier, PermissionsContainer::allow_all())
.await?;
Ok((*file.source).to_string())
}
pub async fn run(flags: Flags, repl_flags: ReplFlags) -> Result<i32, AnyError> {
let ps = ProcState::build(flags).await?;
let main_module =
resolve_path("./$deno$repl.ts", ps.options.initial_cwd()).unwrap();
let mut worker = create_main_worker(
&ps,
main_module,
PermissionsContainer::new(Permissions::from_options(
&ps.options.permissions_options(),
)?),
)
.await?;
worker.setup_repl().await?;
let worker = worker.into_main_worker();
let mut repl_session = ReplSession::initialize(ps.clone(), worker).await?;
let mut rustyline_channel = rustyline_channel();
let helper = EditorHelper {
context_id: repl_session.context_id,
sync_sender: rustyline_channel.0,
};
let history_file_path = ps.dir.repl_history_file_path();
let editor = ReplEditor::new(helper, history_file_path)?;
if let Some(eval_files) = repl_flags.eval_files {
for eval_file in eval_files {
match read_eval_file(&ps, &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 !ps.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.")
}
}
loop {
let line = read_line_and_poll(
&mut repl_session,
&mut rustyline_channel.1,
editor.clone(),
)
.await;
match line {
Ok(line) => {
editor.set_should_exit_on_interrupt(false);
editor.update_history(line.clone());
let output = repl_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 repl_session.closing().await? {
break;
}
println!("{output}");
}
Err(ReadlineError::Interrupted) => {
if editor.should_exit_on_interrupt() {
break;
}
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(repl_session.worker.exit_code())
}