notohh/rustlings
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mo8it 2024-04-05 03:04:53 +02:00
parent 0bf51c6a0d
commit b0f19fd862
6 changed files with 180 additions and 259 deletions
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26
Cargo.lock generated
View file

@ -207,19 +207,6 @@ dependencies = [
"static_assertions", "static_assertions",
] ]
[[package]]
name = "console"
version = "0.15.8"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0e1f83fc076bd6dd27517eacdf25fef6c4dfe5f1d7448bafaaf3a26f13b5e4eb"
dependencies = [
"encode_unicode",
"lazy_static",
"libc",
"unicode-width",
"windows-sys 0.52.0",
]
[[package]] [[package]]
name = "crossbeam-channel" name = "crossbeam-channel"
version = "0.5.12" version = "0.5.12"
@ -278,12 +265,6 @@ version = "1.10.0"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "11157ac094ffbdde99aa67b23417ebdd801842852b500e395a45a9c0aac03e4a" checksum = "11157ac094ffbdde99aa67b23417ebdd801842852b500e395a45a9c0aac03e4a"
[[package]]
name = "encode_unicode"
version = "0.3.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a357d28ed41a50f9c765dbfe56cbc04a64e53e5fc58ba79fbc34c10ef3df831f"
[[package]] [[package]]
name = "equivalent" name = "equivalent"
version = "1.0.1" version = "1.0.1"
@ -447,12 +428,6 @@ dependencies = [
"libc", "libc",
] ]
[[package]]
name = "lazy_static"
version = "1.4.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
[[package]] [[package]]
name = "libc" name = "libc"
version = "0.2.153" version = "0.2.153"
@ -714,7 +689,6 @@ dependencies = [
"anyhow", "anyhow",
"assert_cmd", "assert_cmd",
"clap", "clap",
"console",
"crossterm", "crossterm",
"glob", "glob",
"notify-debouncer-mini", "notify-debouncer-mini",

1
Cargo.toml
View file

@ -36,7 +36,6 @@ edition.workspace = true
[dependencies] [dependencies]
anyhow.workspace = true anyhow.workspace = true
clap = { version = "4.5.4", features = ["derive"] } clap = { version = "4.5.4", features = ["derive"] }
console = "0.15.8"
crossterm = "0.27.0" crossterm = "0.27.0"
notify-debouncer-mini = "0.4.1" notify-debouncer-mini = "0.4.1"
ratatui = "0.26.1" ratatui = "0.26.1"

59
src/consts.rs Normal file
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@ -0,0 +1,59 @@
pub const WELCOME: &str = r" welcome to...
_ _ _
_ __ _ _ ___| |_| (_)_ __ __ _ ___
| '__| | | / __| __| | | '_ \ / _` / __|
| | | |_| \__ \ |_| | | | | | (_| \__ \
|_| \__,_|___/\__|_|_|_| |_|\__, |___/
|___/";
pub const DEFAULT_OUT: &str =
"Is this your first time? Don't worry, Rustlings was made for beginners! We are
going to teach you a lot of things about Rust, but before we can get
started, here's a couple of notes about how Rustlings operates:
1. The central concept behind Rustlings is that you solve exercises. These
exercises usually have some sort of syntax error in them, which will cause
them to fail compilation or testing. Sometimes there's a logic error instead
of a syntax error. No matter what error, it's your job to find it and fix it!
You'll know when you fixed it because then, the exercise will compile and
Rustlings will be able to move on to the next exercise.
2. If you run Rustlings in watch mode (which we recommend), it'll automatically
start with the first exercise. Don't get confused by an error message popping
up as soon as you run Rustlings! This is part of the exercise that you're
supposed to solve, so open the exercise file in an editor and start your
detective work!
3. If you're stuck on an exercise, there is a helpful hint you can view by typing
'hint' (in watch mode), or running `rustlings hint exercise_name`.
4. If an exercise doesn't make sense to you, feel free to open an issue on GitHub!
(https://github.com/rust-lang/rustlings/issues/new). We look at every issue,
and sometimes, other learners do too so you can help each other out!
Got all that? Great! To get started, run `rustlings watch` in order to get the first exercise.
Make sure to have your editor open in the `rustlings` directory!";
pub const FENISH_LINE: &str = "+----------------------------------------------------+
| You made it to the Fe-nish line! |
+-------------------------- ------------------------+
\\/\x1b[31m
▒▒ ▒▒▒▒▒▒▒▒ ▒▒▒▒▒▒▒▒ ▒▒
▒▒▒▒ ▒▒ ▒▒ ▒▒ ▒▒ ▒▒ ▒▒ ▒▒▒▒
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▓▓▓▓▓▓▓▓ ▓▓ ▓▓██ ▓▓ ▓▓██ ▓▓ ▓▓▓▓▓▓▓▓
▒▒▒▒ ▒▒ ████ ▒▒ ████ ▒▒░░ ▒▒▒▒
▒▒ ▒▒▒▒▒▒ ▒▒▒▒▒▒ ▒▒▒▒▒▒ ▒▒
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▒▒▒▒▒▒▒▒▒▒██▒▒▒▒▒▒██▒▒▒▒▒▒▒▒▒▒
▒▒ ▒▒▒▒▒▒▒▒▒▒██████▒▒▒▒▒▒▒▒▒▒ ▒▒
▒▒ ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒ ▒▒
▒▒ ▒▒ ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒ ▒▒ ▒▒
▒▒ ▒▒ ▒▒ ▒▒ ▒▒ ▒▒
▒▒ ▒▒ ▒▒ ▒▒\x1b[0m
We hope you enjoyed learning about the various aspects of Rust!
If you noticed any issues, please don't hesitate to report them to our repo.
You can also contribute your own exercises to help the greater community!
Before reporting an issue or contributing, please read our guidelines:
https://github.com/rust-lang/rustlings/blob/main/CONTRIBUTING.md";

243
src/main.rs
View file

@ -1,26 +1,22 @@
use crate::consts::{DEFAULT_OUT, WELCOME};
use crate::embedded::{WriteStrategy, EMBEDDED_FILES}; use crate::embedded::{WriteStrategy, EMBEDDED_FILES};
use crate::exercise::{Exercise, ExerciseList}; use crate::exercise::{Exercise, ExerciseList};
use crate::run::run; use crate::run::run;
use crate::tui::tui;
use crate::verify::verify; use crate::verify::verify;
use anyhow::{bail, Context, Result}; use anyhow::{bail, Context, Result};
use clap::{Parser, Subcommand}; use clap::{Parser, Subcommand};
use console::Emoji; use std::io::Write;
use notify_debouncer_mini::notify::RecursiveMode;
use notify_debouncer_mini::{new_debouncer, DebouncedEventKind};
use std::io::{BufRead, Write};
use std::path::Path; use std::path::Path;
use std::process::exit; use std::process::exit;
use std::sync::atomic::{AtomicBool, Ordering};
use std::sync::mpsc::{channel, RecvTimeoutError};
use std::sync::{Arc, Mutex};
use std::time::Duration;
use std::{io, thread};
use verify::VerifyState; use verify::VerifyState;
mod consts;
mod embedded; mod embedded;
mod exercise; mod exercise;
mod init; mod init;
mod run; mod run;
mod tui;
mod verify; mod verify;
/// Rustlings is a collection of small exercises to get you used to writing and reading Rust code /// Rustlings is a collection of small exercises to get you used to writing and reading Rust code
@ -37,7 +33,7 @@ enum Subcommands {
Init, Init,
/// Verify all exercises according to the recommended order /// Verify all exercises according to the recommended order
Verify, Verify,
/// Rerun `verify` when files were edited /// Same as just running `rustlings` without a subcommand.
Watch, Watch,
/// Run/Test a single exercise /// Run/Test a single exercise
Run { Run {
@ -106,21 +102,20 @@ If you are just starting with Rustlings, run the command `rustlings init` to ini
exit(1); exit(1);
} }
let command = args.command.unwrap_or_else(|| { match args.command {
None | Some(Subcommands::Watch) => {
println!("{DEFAULT_OUT}\n"); println!("{DEFAULT_OUT}\n");
exit(0); tui(&exercises)?;
}); }
match command {
// `Init` is handled above. // `Init` is handled above.
Subcommands::Init => (), Some(Subcommands::Init) => (),
Subcommands::List { Some(Subcommands::List {
paths, paths,
names, names,
filter, filter,
unsolved, unsolved,
solved, solved,
} => { }) => {
if !paths && !names { if !paths && !names {
println!("{:<17}\t{:<46}\t{:<7}", "Name", "Path", "Status"); println!("{:<17}\t{:<46}\t{:<7}", "Name", "Path", "Status");
} }
@ -188,90 +183,30 @@ If you are just starting with Rustlings, run the command `rustlings init` to ini
); );
exit(0); exit(0);
} }
Some(Subcommands::Run { name }) => {
Subcommands::Run { name } => {
let exercise = find_exercise(&name, &exercises)?; let exercise = find_exercise(&name, &exercises)?;
run(exercise).unwrap_or_else(|_| exit(1)); run(exercise).unwrap_or_else(|_| exit(1));
} }
Some(Subcommands::Reset { name }) => {
Subcommands::Reset { name } => {
let exercise = find_exercise(&name, &exercises)?; let exercise = find_exercise(&name, &exercises)?;
EMBEDDED_FILES EMBEDDED_FILES
.write_exercise_to_disk(&exercise.path, WriteStrategy::Overwrite) .write_exercise_to_disk(&exercise.path, WriteStrategy::Overwrite)
.with_context(|| format!("Failed to reset the exercise {exercise}"))?; .with_context(|| format!("Failed to reset the exercise {exercise}"))?;
println!("The file {} has been reset!", exercise.path.display()); println!("The file {} has been reset!", exercise.path.display());
} }
Some(Subcommands::Hint { name }) => {
Subcommands::Hint { name } => {
let exercise = find_exercise(&name, &exercises)?; let exercise = find_exercise(&name, &exercises)?;
println!("{}", exercise.hint); println!("{}", exercise.hint);
} }
Some(Subcommands::Verify) => match verify(&exercises, (0, exercises.len()))? {
Subcommands::Verify => match verify(&exercises, (0, exercises.len()))? {
VerifyState::AllExercisesDone => println!("All exercises done!"), VerifyState::AllExercisesDone => println!("All exercises done!"),
VerifyState::Failed(exercise) => bail!("Exercise {exercise} failed"), VerifyState::Failed(exercise) => bail!("Exercise {exercise} failed"),
}, },
Subcommands::Watch => match watch(&exercises) {
Err(e) => {
println!("Error: Could not watch your progress. Error message was {e:?}.");
println!("Most likely you've run out of disk space or your 'inotify limit' has been reached.");
exit(1);
}
Ok(WatchStatus::Finished) => {
println!(
"{emoji} All exercises completed! {emoji}",
emoji = Emoji("🎉", "★")
);
println!("\n{FENISH_LINE}\n");
}
Ok(WatchStatus::Unfinished) => {
println!("We hope you're enjoying learning about Rust!");
println!("If you want to continue working on the exercises at a later point, you can simply run `rustlings watch` again");
}
},
} }
Ok(()) Ok(())
} }
fn spawn_watch_shell(
failed_exercise_hint: Arc<Mutex<Option<String>>>,
should_quit: Arc<AtomicBool>,
) {
println!("Welcome to watch mode! You can type 'help' to get an overview of the commands you can use here.");
thread::spawn(move || {
let mut input = String::with_capacity(32);
let mut stdin = io::stdin().lock();
loop {
// Recycle input buffer.
input.clear();
if let Err(e) = stdin.read_line(&mut input) {
println!("error reading command: {e}");
}
let input = input.trim();
if input == "hint" {
if let Some(hint) = &*failed_exercise_hint.lock().unwrap() {
println!("{hint}");
}
} else if input == "clear" {
println!("\x1B[2J\x1B[1;1H");
} else if input == "quit" {
should_quit.store(true, Ordering::SeqCst);
println!("Bye!");
} else if input == "help" {
println!("{WATCH_MODE_HELP_MESSAGE}");
} else {
println!("unknown command: {input}\n{WATCH_MODE_HELP_MESSAGE}");
}
}
});
}
fn find_exercise<'a>(name: &str, exercises: &'a [Exercise]) -> Result<&'a Exercise> { fn find_exercise<'a>(name: &str, exercises: &'a [Exercise]) -> Result<&'a Exercise> {
if name == "next" { if name == "next" {
for exercise in exercises { for exercise in exercises {
@ -290,147 +225,3 @@ fn find_exercise<'a>(name: &str, exercises: &'a [Exercise]) -> Result<&'a Exerci
.find(|e| e.name == name) .find(|e| e.name == name)
.with_context(|| format!("No exercise found for '{name}'!")) .with_context(|| format!("No exercise found for '{name}'!"))
} }
enum WatchStatus {
Finished,
Unfinished,
}
fn watch(exercises: &[Exercise]) -> Result<WatchStatus> {
/* Clears the terminal with an ANSI escape code.
Works in UNIX and newer Windows terminals. */
fn clear_screen() {
println!("\x1Bc");
}
let (tx, rx) = channel();
let should_quit = Arc::new(AtomicBool::new(false));
let mut debouncer = new_debouncer(Duration::from_secs(1), tx)?;
debouncer
.watcher()
.watch(Path::new("exercises"), RecursiveMode::Recursive)?;
clear_screen();
let failed_exercise_hint = match verify(exercises, (0, exercises.len()))? {
VerifyState::AllExercisesDone => return Ok(WatchStatus::Finished),
VerifyState::Failed(exercise) => Arc::new(Mutex::new(Some(exercise.hint.clone()))),
};
spawn_watch_shell(Arc::clone(&failed_exercise_hint), Arc::clone(&should_quit));
let mut pending_exercises = Vec::with_capacity(exercises.len());
loop {
match rx.recv_timeout(Duration::from_secs(1)) {
Ok(event) => match event {
Ok(events) => {
for event in events {
if event.kind == DebouncedEventKind::Any
&& event.path.extension().is_some_and(|ext| ext == "rs")
{
pending_exercises.extend(exercises.iter().filter(|exercise| {
!exercise.looks_done().unwrap_or(false)
|| event.path.ends_with(&exercise.path)
}));
let num_done = exercises.len() - pending_exercises.len();
clear_screen();
match verify(
pending_exercises.iter().copied(),
(num_done, exercises.len()),
)? {
VerifyState::AllExercisesDone => return Ok(WatchStatus::Finished),
VerifyState::Failed(exercise) => {
let hint = exercise.hint.clone();
*failed_exercise_hint.lock().unwrap() = Some(hint);
}
}
pending_exercises.clear();
}
}
}
Err(e) => println!("watch error: {e:?}"),
},
Err(RecvTimeoutError::Timeout) => {
// the timeout expired, just check the `should_quit` variable below then loop again
}
Err(e) => println!("watch error: {e:?}"),
}
// Check if we need to exit
if should_quit.load(Ordering::SeqCst) {
return Ok(WatchStatus::Unfinished);
}
}
}
const WELCOME: &str = r" welcome to...
_ _ _
_ __ _ _ ___| |_| (_)_ __ __ _ ___
| '__| | | / __| __| | | '_ \ / _` / __|
| | | |_| \__ \ |_| | | | | | (_| \__ \
|_| \__,_|___/\__|_|_|_| |_|\__, |___/
|___/";
const DEFAULT_OUT: &str =
"Is this your first time? Don't worry, Rustlings was made for beginners! We are
going to teach you a lot of things about Rust, but before we can get
started, here's a couple of notes about how Rustlings operates:
1. The central concept behind Rustlings is that you solve exercises. These
exercises usually have some sort of syntax error in them, which will cause
them to fail compilation or testing. Sometimes there's a logic error instead
of a syntax error. No matter what error, it's your job to find it and fix it!
You'll know when you fixed it because then, the exercise will compile and
Rustlings will be able to move on to the next exercise.
2. If you run Rustlings in watch mode (which we recommend), it'll automatically
start with the first exercise. Don't get confused by an error message popping
up as soon as you run Rustlings! This is part of the exercise that you're
supposed to solve, so open the exercise file in an editor and start your
detective work!
3. If you're stuck on an exercise, there is a helpful hint you can view by typing
'hint' (in watch mode), or running `rustlings hint exercise_name`.
4. If an exercise doesn't make sense to you, feel free to open an issue on GitHub!
(https://github.com/rust-lang/rustlings/issues/new). We look at every issue,
and sometimes, other learners do too so you can help each other out!
Got all that? Great! To get started, run `rustlings watch` in order to get the first exercise.
Make sure to have your editor open in the `rustlings` directory!";
const WATCH_MODE_HELP_MESSAGE: &str = "Commands available to you in watch mode:
hint - prints the current exercise's hint
clear - clears the screen
quit - quits watch mode
help - displays this help message
Watch mode automatically re-evaluates the current exercise
when you edit a file's contents.";
const FENISH_LINE: &str = "+----------------------------------------------------+
| You made it to the Fe-nish line! |
+-------------------------- ------------------------+
\\/\x1b[31m
▒▒ ▒▒▒▒▒▒▒▒ ▒▒▒▒▒▒▒▒ ▒▒
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▒▒ ▒▒ ▒▒ ▒▒ ▒▒ ▒▒
▒▒ ▒▒ ▒▒ ▒▒\x1b[0m
We hope you enjoyed learning about the various aspects of Rust!
If you noticed any issues, please don't hesitate to report them to our repo.
You can also contribute your own exercises to help the greater community!
Before reporting an issue or contributing, please read our guidelines:
https://github.com/rust-lang/rustlings/blob/main/CONTRIBUTING.md";

92
src/tui.rs Normal file
View file

@ -0,0 +1,92 @@
use anyhow::Result;
use crossterm::{
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
ExecutableCommand,
};
use notify_debouncer_mini::{new_debouncer, notify::RecursiveMode, DebouncedEventKind};
use ratatui::{backend::CrosstermBackend, Terminal};
use std::{
io::stdout,
path::Path,
sync::mpsc::{channel, RecvTimeoutError},
time::Duration,
};
use crate::{
exercise::Exercise,
verify::{verify, VerifyState},
};
fn watch(exercises: &[Exercise]) -> Result<()> {
let (tx, rx) = channel();
let mut debouncer = new_debouncer(Duration::from_secs(1), tx)?;
debouncer
.watcher()
.watch(Path::new("exercises"), RecursiveMode::Recursive)?;
let mut failed_exercise_hint = match verify(exercises, (0, exercises.len()))? {
VerifyState::AllExercisesDone => return Ok(()),
VerifyState::Failed(exercise) => Some(&exercise.hint),
};
let mut pending_exercises = Vec::with_capacity(exercises.len());
loop {
match rx.recv_timeout(Duration::from_secs(1)) {
Ok(event) => match event {
Ok(events) => {
for event in events {
if event.kind == DebouncedEventKind::Any
&& event.path.extension().is_some_and(|ext| ext == "rs")
{
pending_exercises.extend(exercises.iter().filter(|exercise| {
!exercise.looks_done().unwrap_or(false)
|| event.path.ends_with(&exercise.path)
}));
let num_done = exercises.len() - pending_exercises.len();
match verify(
pending_exercises.iter().copied(),
(num_done, exercises.len()),
)? {
VerifyState::AllExercisesDone => return Ok(()),
VerifyState::Failed(exercise) => {
failed_exercise_hint = Some(&exercise.hint);
}
}
pending_exercises.clear();
}
}
}
Err(e) => println!("watch error: {e:?}"),
},
Err(RecvTimeoutError::Timeout) => {
// the timeout expired, just check the `should_quit` variable below then loop again
}
Err(e) => println!("watch error: {e:?}"),
}
// TODO: Check if we need to exit
}
}
pub fn tui(exercises: &[Exercise]) -> Result<()> {
let mut stdout = stdout().lock();
stdout.execute(EnterAlternateScreen)?;
enable_raw_mode()?;
let mut terminal = Terminal::new(CrosstermBackend::new(&mut stdout))?;
terminal.clear()?;
watch(exercises)?;
drop(terminal);
stdout.execute(LeaveAlternateScreen)?;
disable_raw_mode()?;
// TODO
println!("We hope you're enjoying learning about Rust!");
println!("If you want to continue working on the exercises at a later point, you can simply run `rustlings watch` again");
Ok(())
}

16
src/verify.rs
View file

@ -1,5 +1,5 @@
use anyhow::Result; use anyhow::Result;
use console::style; use crossterm::style::{Attribute, ContentStyle, Stylize};
use std::io::{stdout, Write}; use std::io::{stdout, Write};
use crate::exercise::{Exercise, Mode, State}; use crate::exercise::{Exercise, Mode, State};
@ -50,20 +50,26 @@ pub fn verify<'a>(
println!( println!(
"\nYou can keep working on this exercise, "\nYou can keep working on this exercise,
or jump into the next one by removing the {} comment:\n", or jump into the next one by removing the {} comment:\n",
style("`I AM NOT DONE`").bold() "`I AM NOT DONE`".bold()
); );
for context_line in context { for context_line in context {
let formatted_line = if context_line.important { let formatted_line = if context_line.important {
format!("{}", style(context_line.line).bold()) format!("{}", context_line.line.bold())
} else { } else {
context_line.line context_line.line
}; };
println!( println!(
"{:>2} {} {}", "{:>2} {} {}",
style(context_line.number).blue().bold(), ContentStyle {
style("|").blue(), foreground_color: Some(crossterm::style::Color::Blue),
background_color: None,
underline_color: None,
attributes: Attribute::Bold.into()
}
.apply(context_line.number),
"|".blue(),
formatted_line, formatted_line,
); );
} }