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Improve the runner

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This commit is contained in:
mo8it 2024-08-01 15:23:54 +02:00
parent 33a5680328
commit c7590dd752
9 changed files with 162 additions and 181 deletions
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51
src/app_state.rs
View file

@ -1,19 +1,18 @@
use anyhow::{bail, Context, Error, Result};
use serde::Deserialize;
use std::{
fs::{self, File},
io::{Read, StdoutLock, Write},
path::{Path, PathBuf},
path::Path,
process::{Command, Stdio},
thread,
};
use crate::{
clear_terminal,
cmd::CmdRunner,
embedded::EMBEDDED_FILES,
exercise::{Exercise, RunnableExercise},
info_file::ExerciseInfo,
DEBUG_PROFILE,
};
const STATE_FILE_NAME: &str = ".rustlings-state.txt";
@ -34,31 +33,6 @@ pub enum StateFileStatus {
NotRead,
}
// Parses parts of the output of `cargo metadata`.
#[derive(Deserialize)]
struct CargoMetadata {
target_directory: PathBuf,
}
pub fn parse_target_dir() -> Result<PathBuf> {
// Get the target directory from Cargo.
let metadata_output = Command::new("cargo")
.arg("metadata")
.arg("-q")
.arg("--format-version")
.arg("1")
.arg("--no-deps")
.stdin(Stdio::null())
.stderr(Stdio::inherit())
.output()
.context(CARGO_METADATA_ERR)?
.stdout;
serde_json::de::from_slice::<CargoMetadata>(&metadata_output)
.context("Failed to read the field `target_directory` from the `cargo metadata` output")
.map(|metadata| metadata.target_directory)
}
pub struct AppState {
current_exercise_ind: usize,
exercises: Vec<Exercise>,
@ -68,8 +42,7 @@ pub struct AppState {
// Preallocated buffer for reading and writing the state file.
file_buf: Vec<u8>,
official_exercises: bool,
// Cargo's target directory.
target_dir: PathBuf,
cmd_runner: CmdRunner,
}
impl AppState {
@ -123,7 +96,7 @@ impl AppState {
exercise_infos: Vec<ExerciseInfo>,
final_message: String,
) -> Result<(Self, StateFileStatus)> {
let target_dir = parse_target_dir()?;
let cmd_runner = CmdRunner::build()?;
let exercises = exercise_infos
.into_iter()
@ -157,7 +130,7 @@ impl AppState {
final_message,
file_buf: Vec::with_capacity(2048),
official_exercises: !Path::new("info.toml").exists(),
target_dir,
cmd_runner,
};
let state_file_status = slf.update_from_file();
@ -186,8 +159,8 @@ impl AppState {
}
#[inline]
pub fn target_dir(&self) -> &Path {
&self.target_dir
pub fn cmd_runner(&self) -> &CmdRunner {
&self.cmd_runner
}
// Write the state file.
@ -336,7 +309,7 @@ impl AppState {
/// Official exercises: Dump the solution file form the binary and return its path.
/// Third-party exercises: Check if a solution file exists and return its path in that case.
pub fn current_solution_path(&self) -> Result<Option<String>> {
if DEBUG_PROFILE {
if cfg!(debug_assertions) {
return Ok(None);
}
@ -386,7 +359,7 @@ impl AppState {
.iter_mut()
.map(|exercise| {
s.spawn(|| {
let success = exercise.run_exercise(None, &self.target_dir)?;
let success = exercise.run_exercise(None, &self.cmd_runner)?;
exercise.done = success;
Ok::<_, Error>(success)
})
@ -434,10 +407,6 @@ impl AppState {
}
}
const CARGO_METADATA_ERR: &str = "Failed to run the command `cargo metadata …`
Did you already install Rust?
Try running `cargo --version` to diagnose the problem.";
const RERUNNING_ALL_EXERCISES_MSG: &[u8] = b"
All exercises seem to be done.
Recompiling and running all exercises to make sure that all of them are actually done.
@ -490,7 +459,7 @@ mod tests {
final_message: String::new(),
file_buf: Vec::new(),
official_exercises: true,
target_dir: PathBuf::new(),
cmd_runner: CmdRunner::build().unwrap(),
};
let mut assert = |done: [bool; 3], expected: [Option<usize>; 3]| {

120
src/cmd.rs
View file

@ -1,13 +1,14 @@
use anyhow::{Context, Result};
use serde::Deserialize;
use std::{
io::Read,
path::Path,
path::PathBuf,
process::{Command, Stdio},
};
/// Run a command with a description for a possible error and append the merged stdout and stderr.
/// The boolean in the returned `Result` is true if the command's exit status is success.
pub fn run_cmd(mut cmd: Command, description: &str, output: Option<&mut Vec<u8>>) -> Result<bool> {
fn run_cmd(mut cmd: Command, description: &str, output: Option<&mut Vec<u8>>) -> Result<bool> {
let spawn = |mut cmd: Command| {
// NOTE: The closure drops `cmd` which prevents a pipe deadlock.
cmd.stdin(Stdio::null())
@ -45,50 +46,107 @@ pub fn run_cmd(mut cmd: Command, description: &str, output: Option<&mut Vec<u8>>
.map(|status| status.success())
}
pub struct CargoCmd<'a> {
pub subcommand: &'a str,
pub args: &'a [&'a str],
pub bin_name: &'a str,
pub description: &'a str,
/// RUSTFLAGS="-A warnings"
pub hide_warnings: bool,
/// Added as `--target-dir` if `Self::dev` is true.
pub target_dir: &'a Path,
/// The output buffer to append the merged stdout and stderr.
pub output: Option<&'a mut Vec<u8>>,
/// true while developing Rustlings.
pub dev: bool,
// Parses parts of the output of `cargo metadata`.
#[derive(Deserialize)]
struct CargoMetadata {
target_directory: PathBuf,
}
impl<'a> CargoCmd<'a> {
/// Run `cargo SUBCOMMAND --bin EXERCISE_NAME … ARGS`.
pub fn run(self) -> Result<bool> {
pub struct CmdRunner {
target_dir: PathBuf,
}
impl CmdRunner {
pub fn build() -> Result<Self> {
// Get the target directory from Cargo.
let metadata_output = Command::new("cargo")
.arg("metadata")
.arg("-q")
.arg("--format-version")
.arg("1")
.arg("--no-deps")
.stdin(Stdio::null())
.stderr(Stdio::inherit())
.output()
.context(CARGO_METADATA_ERR)?
.stdout;
let target_dir = serde_json::de::from_slice::<CargoMetadata>(&metadata_output)
.context("Failed to read the field `target_directory` from the `cargo metadata` output")
.map(|metadata| metadata.target_directory)?;
Ok(Self { target_dir })
}
pub fn cargo<'out>(
&self,
subcommand: &str,
bin_name: &str,
output: Option<&'out mut Vec<u8>>,
) -> CargoSubcommand<'out> {
let mut cmd = Command::new("cargo");
cmd.arg(self.subcommand);
cmd.arg(subcommand).arg("-q").arg("--bin").arg(bin_name);
// A hack to make `cargo run` work when developing Rustlings.
if self.dev {
#[cfg(debug_assertions)]
cmd.arg("--manifest-path")
.arg("dev/Cargo.toml")
.arg("--target-dir")
.arg(self.target_dir);
.arg(&self.target_dir);
if output.is_some() {
cmd.arg("--color").arg("always");
}
cmd.arg("--color")
.arg("always")
.arg("-q")
.arg("--bin")
.arg(self.bin_name)
.args(self.args);
if self.hide_warnings {
cmd.env("RUSTFLAGS", "-A warnings");
CargoSubcommand { cmd, output }
}
run_cmd(cmd, self.description, self.output)
/// The boolean in the returned `Result` is true if the command's exit status is success.
pub fn run_debug_bin(&self, bin_name: &str, output: Option<&mut Vec<u8>>) -> Result<bool> {
// 7 = "/debug/".len()
let mut bin_path =
PathBuf::with_capacity(self.target_dir.as_os_str().len() + 7 + bin_name.len());
bin_path.push(&self.target_dir);
bin_path.push("debug");
bin_path.push(bin_name);
run_cmd(Command::new(&bin_path), &bin_path.to_string_lossy(), output)
}
}
pub struct CargoSubcommand<'out> {
cmd: Command,
output: Option<&'out mut Vec<u8>>,
}
impl<'out> CargoSubcommand<'out> {
#[inline]
pub fn args<'arg, I>(&mut self, args: I) -> &mut Self
where
I: IntoIterator<Item = &'arg str>,
{
self.cmd.args(args);
self
}
/// RUSTFLAGS="-A warnings"
#[inline]
pub fn hide_warnings(&mut self) -> &mut Self {
self.cmd.env("RUSTFLAGS", "-A warnings");
self
}
/// The boolean in the returned `Result` is true if the command's exit status is success.
#[inline]
pub fn run(self, description: &str) -> Result<bool> {
run_cmd(self.cmd, description, self.output)
}
}
const CARGO_METADATA_ERR: &str = "Failed to run the command `cargo metadata …`
Did you already install Rust?
Try running `cargo --version` to diagnose the problem.";
#[cfg(test)]
mod tests {
use super::*;

4
src/dev.rs
View file

@ -2,8 +2,6 @@ use anyhow::{bail, Context, Result};
use clap::Subcommand;
use std::path::PathBuf;
use crate::DEBUG_PROFILE;
mod check;
mod new;
mod update;
@ -32,7 +30,7 @@ impl DevCommands {
pub fn run(self) -> Result<()> {
match self {
Self::New { path, no_git } => {
if DEBUG_PROFILE {
if cfg!(debug_assertions) {
bail!("Disabled in the debug build");
}

32
src/dev/check.rs
View file

@ -12,11 +12,11 @@ use std::{
};
use crate::{
app_state::parse_target_dir,
cargo_toml::{append_bins, bins_start_end_ind, BINS_BUFFER_CAPACITY},
cmd::CmdRunner,
exercise::{RunnableExercise, OUTPUT_CAPACITY},
info_file::{ExerciseInfo, InfoFile},
CURRENT_FORMAT_VERSION, DEBUG_PROFILE,
CURRENT_FORMAT_VERSION,
};
// Find a char that isn't allowed in the exercise's `name` or `dir`.
@ -37,8 +37,8 @@ fn check_cargo_toml(
append_bins(&mut new_bins, exercise_infos, exercise_path_prefix);
if old_bins != new_bins {
if DEBUG_PROFILE {
bail!("The file `dev/Cargo.toml` is outdated. Please run `cargo run -- dev update` to update it");
if cfg!(debug_assertions) {
bail!("The file `dev/Cargo.toml` is outdated. Please run `cargo run -- dev update` to update it. Then run `cargo run -- dev check` again");
}
bail!("The file `Cargo.toml` is outdated. Please run `rustlings dev update` to update it. Then run `rustlings dev check` again");
@ -162,7 +162,7 @@ fn check_unexpected_files(
Ok(())
}
fn check_exercises_unsolved(info_file: &InfoFile, target_dir: &Path) -> Result<()> {
fn check_exercises_unsolved(info_file: &InfoFile, cmd_runner: &CmdRunner) -> Result<()> {
let error_occurred = AtomicBool::new(false);
println!(
@ -184,7 +184,7 @@ fn check_exercises_unsolved(info_file: &InfoFile, target_dir: &Path) -> Result<(
error_occurred.store(true, atomic::Ordering::Relaxed);
};
match exercise_info.run_exercise(None, target_dir) {
match exercise_info.run_exercise(None, cmd_runner) {
Ok(true) => error(b"Already solved!"),
Ok(false) => (),
Err(e) => error(e.to_string().as_bytes()),
@ -200,7 +200,7 @@ fn check_exercises_unsolved(info_file: &InfoFile, target_dir: &Path) -> Result<(
Ok(())
}
fn check_exercises(info_file: &InfoFile, target_dir: &Path) -> Result<()> {
fn check_exercises(info_file: &InfoFile, cmd_runner: &CmdRunner) -> Result<()> {
match info_file.format_version.cmp(&CURRENT_FORMAT_VERSION) {
Ordering::Less => bail!("`format_version` < {CURRENT_FORMAT_VERSION} (supported version)\nPlease migrate to the latest format version"),
Ordering::Greater => bail!("`format_version` > {CURRENT_FORMAT_VERSION} (supported version)\nTry updating the Rustlings program"),
@ -210,10 +210,14 @@ fn check_exercises(info_file: &InfoFile, target_dir: &Path) -> Result<()> {
let info_file_paths = check_info_file_exercises(info_file)?;
check_unexpected_files("exercises", &info_file_paths)?;
check_exercises_unsolved(info_file, target_dir)
check_exercises_unsolved(info_file, cmd_runner)
}
fn check_solutions(require_solutions: bool, info_file: &InfoFile, target_dir: &Path) -> Result<()> {
fn check_solutions(
require_solutions: bool,
info_file: &InfoFile,
cmd_runner: &CmdRunner,
) -> Result<()> {
let paths = Mutex::new(hashbrown::HashSet::with_capacity(info_file.exercises.len()));
let error_occurred = AtomicBool::new(false);
@ -243,7 +247,7 @@ fn check_solutions(require_solutions: bool, info_file: &InfoFile, target_dir: &P
}
let mut output = Vec::with_capacity(OUTPUT_CAPACITY);
match exercise_info.run_solution(Some(&mut output), target_dir) {
match exercise_info.run_solution(Some(&mut output), cmd_runner) {
Ok(true) => {
paths.lock().unwrap().insert(PathBuf::from(path));
}
@ -266,8 +270,8 @@ fn check_solutions(require_solutions: bool, info_file: &InfoFile, target_dir: &P
pub fn check(require_solutions: bool) -> Result<()> {
let info_file = InfoFile::parse()?;
if cfg!(debug_assertions) {
// A hack to make `cargo run -- dev check` work when developing Rustlings.
if DEBUG_PROFILE {
check_cargo_toml(
&info_file.exercises,
include_str!("../../dev-Cargo.toml"),
@ -279,9 +283,9 @@ pub fn check(require_solutions: bool) -> Result<()> {
check_cargo_toml(&info_file.exercises, &current_cargo_toml, b"")?;
}
let target_dir = parse_target_dir()?;
check_exercises(&info_file, &target_dir)?;
check_solutions(require_solutions, &info_file, &target_dir)?;
let cmd_runner = CmdRunner::build()?;
check_exercises(&info_file, &cmd_runner)?;
check_solutions(require_solutions, &info_file, &cmd_runner)?;
println!("\nEverything looks fine!");

3
src/dev/update.rs
View file

@ -4,7 +4,6 @@ use std::fs;
use crate::{
cargo_toml::updated_cargo_toml,
info_file::{ExerciseInfo, InfoFile},
DEBUG_PROFILE,
};
// Update the `Cargo.toml` file.
@ -27,7 +26,7 @@ pub fn update() -> Result<()> {
let info_file = InfoFile::parse()?;
// A hack to make `cargo run -- dev update` work when developing Rustlings.
if DEBUG_PROFILE {
if cfg!(debug_assertions) {
update_cargo_toml(
&info_file.exercises,
include_str!("../../dev-Cargo.toml"),

103
src/exercise.rs
View file

@ -3,38 +3,25 @@ use ratatui::crossterm::style::{style, StyledContent, Stylize};
use std::{
fmt::{self, Display, Formatter},
io::Write,
path::{Path, PathBuf},
process::Command,
};
use crate::{
cmd::{run_cmd, CargoCmd},
in_official_repo,
terminal_link::TerminalFileLink,
DEBUG_PROFILE,
};
use crate::{cmd::CmdRunner, terminal_link::TerminalFileLink};
/// The initial capacity of the output buffer.
pub const OUTPUT_CAPACITY: usize = 1 << 14;
// Run an exercise binary and append its output to the `output` buffer.
// Compilation must be done before calling this method.
fn run_bin(bin_name: &str, mut output: Option<&mut Vec<u8>>, target_dir: &Path) -> Result<bool> {
fn run_bin(
bin_name: &str,
mut output: Option<&mut Vec<u8>>,
cmd_runner: &CmdRunner,
) -> Result<bool> {
if let Some(output) = output.as_deref_mut() {
writeln!(output, "{}", "Output".underlined())?;
}
// 7 = "/debug/".len()
let mut bin_path = PathBuf::with_capacity(target_dir.as_os_str().len() + 7 + bin_name.len());
bin_path.push(target_dir);
bin_path.push("debug");
bin_path.push(bin_name);
let success = run_cmd(
Command::new(&bin_path),
&bin_path.to_string_lossy(),
output.as_deref_mut(),
)?;
let success = cmd_runner.run_debug_bin(bin_name, output.as_deref_mut())?;
if let Some(output) = output {
if !success {
@ -89,26 +76,20 @@ pub trait RunnableExercise {
&self,
bin_name: &str,
mut output: Option<&mut Vec<u8>>,
target_dir: &Path,
cmd_runner: &CmdRunner,
) -> Result<bool> {
if let Some(output) = output.as_deref_mut() {
let output_is_none = if let Some(output) = output.as_deref_mut() {
output.clear();
}
false
} else {
true
};
// Developing the official Rustlings.
let dev = DEBUG_PROFILE && in_official_repo();
let build_success = CargoCmd {
subcommand: "build",
args: &[],
bin_name,
description: "cargo build …",
hide_warnings: output.is_none(),
target_dir,
output: output.as_deref_mut(),
dev,
let mut build_cmd = cmd_runner.cargo("build", bin_name, output.as_deref_mut());
if output_is_none {
build_cmd.hide_warnings();
}
.run()?;
let build_success = build_cmd.run("cargo build …")?;
if !build_success {
return Ok(false);
}
@ -118,45 +99,33 @@ pub trait RunnableExercise {
output.clear();
}
let mut clippy_cmd = cmd_runner.cargo("clippy", bin_name, output.as_deref_mut());
// `--profile test` is required to also check code with `[cfg(test)]`.
let clippy_args: &[&str] = if self.strict_clippy() {
&["--profile", "test", "--", "-D", "warnings"]
if self.strict_clippy() {
clippy_cmd.args(["--profile", "test", "--", "-D", "warnings"]);
} else {
&["--profile", "test"]
};
let clippy_success = CargoCmd {
subcommand: "clippy",
args: clippy_args,
bin_name,
description: "cargo clippy …",
hide_warnings: false,
target_dir,
output: output.as_deref_mut(),
dev,
clippy_cmd.args(["--profile", "test"]);
}
.run()?;
let clippy_success = clippy_cmd.run("cargo clippy …")?;
if !clippy_success {
return Ok(false);
}
if !self.test() {
return run_bin(bin_name, output.as_deref_mut(), target_dir);
return run_bin(bin_name, output.as_deref_mut(), cmd_runner);
}
let test_success = CargoCmd {
subcommand: "test",
args: &["--", "--color", "always", "--show-output"],
bin_name,
description: "cargo test …",
let mut test_cmd = cmd_runner.cargo("test", bin_name, output.as_deref_mut());
if !output_is_none {
test_cmd.args(["--", "--color", "always", "--show-output"]);
}
// Hide warnings because they are shown by Clippy.
hide_warnings: true,
target_dir,
output: output.as_deref_mut(),
dev,
}
.run()?;
test_cmd.hide_warnings();
let test_success = test_cmd.run("cargo test …")?;
let run_success = run_bin(bin_name, output.as_deref_mut(), target_dir)?;
let run_success = run_bin(bin_name, output, cmd_runner)?;
Ok(test_success && run_success)
}
@ -164,19 +133,19 @@ pub trait RunnableExercise {
/// Compile, check and run the exercise.
/// The output is written to the `output` buffer after clearing it.
#[inline]
fn run_exercise(&self, output: Option<&mut Vec<u8>>, target_dir: &Path) -> Result<bool> {
self.run(self.name(), output, target_dir)
fn run_exercise(&self, output: Option<&mut Vec<u8>>, cmd_runner: &CmdRunner) -> Result<bool> {
self.run(self.name(), output, cmd_runner)
}
/// Compile, check and run the exercise's solution.
/// The output is written to the `output` buffer after clearing it.
fn run_solution(&self, output: Option<&mut Vec<u8>>, target_dir: &Path) -> Result<bool> {
fn run_solution(&self, output: Option<&mut Vec<u8>>, cmd_runner: &CmdRunner) -> Result<bool> {
let name = self.name();
let mut bin_name = String::with_capacity(name.len() + 4);
bin_name.push_str(name);
bin_name.push_str("_sol");
self.run(&bin_name, output, target_dir)
self.run(&bin_name, output, cmd_runner)
}
}

18
src/main.rs
View file

@ -24,22 +24,6 @@ mod terminal_link;
mod watch;
const CURRENT_FORMAT_VERSION: u8 = 1;
const DEBUG_PROFILE: bool = {
#[allow(unused_assignments, unused_mut)]
let mut debug_profile = false;
#[cfg(debug_assertions)]
{
debug_profile = true;
}
debug_profile
};
// The current directory is the official Rustligns repository.
fn in_official_repo() -> bool {
Path::new("dev/rustlings-repo.txt").exists()
}
fn clear_terminal(stdout: &mut StdoutLock) -> io::Result<()> {
stdout.write_all(b"\x1b[H\x1b[2J\x1b[3J")
@ -89,7 +73,7 @@ enum Subcommands {
fn main() -> Result<()> {
let args = Args::parse();
if !DEBUG_PROFILE && in_official_repo() {
if cfg!(not(debug_assertions)) && Path::new("dev/rustlings-repo.txt").exists() {
bail!("{OLD_METHOD_ERR}");
}

2
src/run.rs
View file

@ -11,7 +11,7 @@ use crate::{
pub fn run(app_state: &mut AppState) -> Result<()> {
let exercise = app_state.current_exercise();
let mut output = Vec::with_capacity(OUTPUT_CAPACITY);
let success = exercise.run_exercise(Some(&mut output), app_state.target_dir())?;
let success = exercise.run_exercise(Some(&mut output), app_state.cmd_runner())?;
let mut stdout = io::stdout().lock();
stdout.write_all(&output)?;

2
src/watch/state.rs
View file

@ -54,7 +54,7 @@ impl<'a> WatchState<'a> {
let success = self
.app_state
.current_exercise()
.run_exercise(Some(&mut self.output), self.app_state.target_dir())?;
.run_exercise(Some(&mut self.output), self.app_state.cmd_runner())?;
if success {
self.done_status =
if let Some(solution_path) = self.app_state.current_solution_path()? {