mirror of
https://github.com/rust-lang/rustlings.git
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Separate WatchState
This commit is contained in:
mo8it
parent
0a674a158d
commit
9a4ee47c52
181
src/watch.rs
181
src/watch.rs
@ -1,25 +1,18 @@
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use anyhow::Result;
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use crossterm::{
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style::{Attribute, ContentStyle, Stylize},
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terminal::{Clear, ClearType},
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ExecutableCommand,
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};
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use notify_debouncer_mini::{
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new_debouncer, notify::RecursiveMode, DebounceEventResult, DebouncedEventKind,
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};
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use notify_debouncer_mini::{new_debouncer, notify::RecursiveMode};
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use std::{
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fmt::Write as _,
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io::{self, BufRead, StdoutLock, Write},
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io::{self, BufRead, Write},
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path::Path,
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sync::mpsc::{channel, sync_channel, Receiver},
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sync::mpsc::{channel, sync_channel},
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thread,
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time::Duration,
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};
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use crate::{
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exercise::{self, Exercise},
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state_file::StateFile,
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};
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mod state;
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use crate::{exercise::Exercise, state_file::StateFile};
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use self::state::WatchState;
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enum Event {
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Hint,
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@ -27,130 +20,6 @@ enum Event {
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Quit,
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}
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struct WatchState<'a> {
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writer: StdoutLock<'a>,
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rx: Receiver<DebounceEventResult>,
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exercises: &'a [Exercise],
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exercise: &'a Exercise,
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current_exercise_ind: usize,
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stdout: Option<Vec<u8>>,
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stderr: Option<Vec<u8>>,
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message: Option<String>,
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prompt: Vec<u8>,
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}
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impl<'a> WatchState<'a> {
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fn run_exercise(&mut self) -> Result<bool> {
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let output = self.exercise.run()?;
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if !output.status.success() {
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self.stdout = Some(output.stdout);
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self.stderr = Some(output.stderr);
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return Ok(false);
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}
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if let exercise::State::Pending(context) = self.exercise.state()? {
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let mut message = format!(
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"
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You can keep working on this exercise or jump into the next one by removing the {} comment:
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",
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"`I AM NOT DONE`".bold(),
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);
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for context_line in context {
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let formatted_line = if context_line.important {
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context_line.line.bold()
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} else {
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context_line.line.stylize()
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};
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writeln!(
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message,
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"{:>2} {} {}",
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ContentStyle {
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foreground_color: Some(crossterm::style::Color::Blue),
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background_color: None,
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underline_color: None,
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attributes: Attribute::Bold.into()
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}
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.apply(context_line.number),
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"|".blue(),
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formatted_line,
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)?;
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}
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self.stdout = Some(output.stdout);
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self.message = Some(message);
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return Ok(false);
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}
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Ok(true)
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}
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fn try_recv_event(&mut self) -> Result<()> {
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let Ok(events) = self.rx.recv_timeout(Duration::from_millis(100)) else {
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return Ok(());
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};
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if let Some(current_exercise_ind) = events?
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.iter()
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.filter_map(|event| {
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if event.kind != DebouncedEventKind::Any
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|| !event.path.extension().is_some_and(|ext| ext == "rs")
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{
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return None;
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}
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self.exercises
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.iter()
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.position(|exercise| event.path.ends_with(&exercise.path))
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})
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.min()
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{
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self.current_exercise_ind = current_exercise_ind;
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} else {
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return Ok(());
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};
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while self.current_exercise_ind < self.exercises.len() {
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self.exercise = &self.exercises[self.current_exercise_ind];
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if !self.run_exercise()? {
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break;
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}
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self.current_exercise_ind += 1;
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}
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Ok(())
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}
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fn prompt(&mut self) -> io::Result<()> {
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self.writer.write_all(&self.prompt)?;
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self.writer.flush()
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}
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fn render(&mut self) -> Result<()> {
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self.writer.execute(Clear(ClearType::All))?;
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if let Some(stdout) = &self.stdout {
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self.writer.write_all(stdout)?;
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}
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if let Some(stderr) = &self.stderr {
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self.writer.write_all(stderr)?;
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}
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if let Some(message) = &self.message {
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self.writer.write_all(message.as_bytes())?;
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}
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self.prompt()?;
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Ok(())
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}
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}
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pub fn watch(state_file: &StateFile, exercises: &[Exercise]) -> Result<()> {
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let (tx, rx) = channel();
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let mut debouncer = new_debouncer(Duration::from_secs(1), tx)?;
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@ -158,29 +27,7 @@ pub fn watch(state_file: &StateFile, exercises: &[Exercise]) -> Result<()> {
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.watcher()
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.watch(Path::new("exercises"), RecursiveMode::Recursive)?;
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let current_exercise_ind = state_file.next_exercise_ind();
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let exercise = &exercises[current_exercise_ind];
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let writer = io::stdout().lock();
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let mut watch_state = WatchState {
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writer,
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rx,
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exercises,
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exercise,
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current_exercise_ind,
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stdout: None,
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stderr: None,
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message: None,
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prompt: format!(
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"\n\n{}int/{}lear/{}uit? ",
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"h".bold(),
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"c".bold(),
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"q".bold()
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)
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.into_bytes(),
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};
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let mut watch_state = WatchState::new(state_file, exercises, rx);
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watch_state.run_exercise()?;
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watch_state.render()?;
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@ -214,24 +61,20 @@ pub fn watch(state_file: &StateFile, exercises: &[Exercise]) -> Result<()> {
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if let Ok(event) = rx.try_recv() {
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match event {
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Some(Event::Hint) => {
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watch_state
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.writer
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.write_all(watch_state.exercise.hint.as_bytes())?;
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watch_state.prompt()?;
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watch_state.show_hint()?;
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}
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Some(Event::Clear) => {
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watch_state.render()?;
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}
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Some(Event::Quit) => break,
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None => {
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watch_state.writer.write_all(b"Invalid command")?;
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watch_state.prompt()?;
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watch_state.handle_invalid_cmd()?;
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}
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}
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}
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}
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watch_state.writer.write_all(b"
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watch_state.into_writer().write_all(b"
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We hope you're enjoying learning Rust!
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If you want to continue working on the exercises at a later point, you can simply run `rustlings` again.
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")?;
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186
src/watch/state.rs
Normal file
186
src/watch/state.rs
Normal file
@ -0,0 +1,186 @@
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use anyhow::Result;
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use crossterm::{
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style::{Attribute, ContentStyle, Stylize},
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terminal::{Clear, ClearType},
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ExecutableCommand,
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};
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use notify_debouncer_mini::{DebounceEventResult, DebouncedEventKind};
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use std::{
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fmt::Write as _,
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io::{self, StdoutLock, Write as _},
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sync::mpsc::Receiver,
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time::Duration,
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};
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use crate::{
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exercise::{Exercise, State},
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state_file::StateFile,
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};
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pub struct WatchState<'a> {
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writer: StdoutLock<'a>,
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rx: Receiver<DebounceEventResult>,
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exercises: &'a [Exercise],
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exercise: &'a Exercise,
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current_exercise_ind: usize,
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stdout: Option<Vec<u8>>,
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stderr: Option<Vec<u8>>,
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message: Option<String>,
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prompt: Vec<u8>,
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}
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impl<'a> WatchState<'a> {
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pub fn new(
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state_file: &StateFile,
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exercises: &'a [Exercise],
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rx: Receiver<DebounceEventResult>,
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) -> Self {
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let current_exercise_ind = state_file.next_exercise_ind();
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let exercise = &exercises[current_exercise_ind];
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let writer = io::stdout().lock();
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let prompt = format!(
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"\n\n{}int/{}lear/{}uit? ",
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"h".bold(),
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"c".bold(),
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"q".bold()
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)
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.into_bytes();
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Self {
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writer,
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rx,
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exercises,
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exercise,
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current_exercise_ind,
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stdout: None,
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stderr: None,
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message: None,
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prompt,
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}
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}
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#[inline]
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pub fn into_writer(self) -> StdoutLock<'a> {
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self.writer
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}
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pub fn run_exercise(&mut self) -> Result<bool> {
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let output = self.exercise.run()?;
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if !output.status.success() {
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self.stdout = Some(output.stdout);
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self.stderr = Some(output.stderr);
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return Ok(false);
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}
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if let State::Pending(context) = self.exercise.state()? {
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let mut message = format!(
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"
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You can keep working on this exercise or jump into the next one by removing the {} comment:
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",
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"`I AM NOT DONE`".bold(),
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);
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for context_line in context {
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let formatted_line = if context_line.important {
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context_line.line.bold()
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} else {
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context_line.line.stylize()
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};
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writeln!(
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message,
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"{:>2} {} {}",
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ContentStyle {
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foreground_color: Some(crossterm::style::Color::Blue),
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background_color: None,
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underline_color: None,
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attributes: Attribute::Bold.into()
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}
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.apply(context_line.number),
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"|".blue(),
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formatted_line,
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)?;
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}
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self.stdout = Some(output.stdout);
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self.message = Some(message);
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return Ok(false);
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}
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Ok(true)
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}
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pub fn try_recv_event(&mut self) -> Result<()> {
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let Ok(events) = self.rx.recv_timeout(Duration::from_millis(100)) else {
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return Ok(());
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};
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if let Some(current_exercise_ind) = events?
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.iter()
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.filter_map(|event| {
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if event.kind != DebouncedEventKind::Any
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|| !event.path.extension().is_some_and(|ext| ext == "rs")
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{
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return None;
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}
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self.exercises
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.iter()
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.position(|exercise| event.path.ends_with(&exercise.path))
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})
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.min()
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{
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self.current_exercise_ind = current_exercise_ind;
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} else {
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return Ok(());
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};
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while self.current_exercise_ind < self.exercises.len() {
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self.exercise = &self.exercises[self.current_exercise_ind];
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if !self.run_exercise()? {
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break;
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}
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self.current_exercise_ind += 1;
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}
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Ok(())
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}
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pub fn show_prompt(&mut self) -> io::Result<()> {
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self.writer.write_all(&self.prompt)?;
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self.writer.flush()
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}
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pub fn render(&mut self) -> io::Result<()> {
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self.writer.execute(Clear(ClearType::All))?;
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if let Some(stdout) = &self.stdout {
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self.writer.write_all(stdout)?;
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}
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if let Some(stderr) = &self.stderr {
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self.writer.write_all(stderr)?;
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}
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if let Some(message) = &self.message {
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self.writer.write_all(message.as_bytes())?;
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}
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self.show_prompt()
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}
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pub fn show_hint(&mut self) -> io::Result<()> {
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self.writer.write_all(self.exercise.hint.as_bytes())?;
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self.show_prompt()
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}
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pub fn handle_invalid_cmd(&mut self) -> io::Result<()> {
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self.writer.write_all(b"Invalid command")?;
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self.show_prompt()
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}
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}
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