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feat: implement benchmarks (#30)

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Felix Spöttel 2023-10-21 21:08:46 +02:00 • committed by GitHub
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21 changed files with 993 additions and 567 deletions
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11
.cargo/config.toml
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@ -1,10 +1,11 @@
[alias]
scaffold = "run --bin scaffold --quiet --release -- "
download = "run --bin download --quiet --release -- "
read = "run --bin read --quiet --release -- "
scaffold = "run --quiet --release -- scaffold"
download = "run --quiet --release -- download"
read = "run --quiet --release -- read"
solve = "run --bin solve --quiet --release -- "
all = "run"
solve = "run --quiet --release -- solve"
all = "run --quiet --release -- all"
time = "run --quiet --release -- all --release --time"
[env]
AOC_YEAR = "2022"

6
.gitignore vendored
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@ -16,5 +16,7 @@ target/
# Advent of Code
# @see https://old.reddit.com/r/adventofcode/comments/k99rod/sharing_input_data_were_we_requested_not_to/gf2ukkf/?context=3
/src/inputs
!/src/inputs/.keep
/data
!/data/inputs/.keep
!/data/examples/.keep
!/data/puzzles/.keep

6
Cargo.toml
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@ -7,5 +7,11 @@ default-run = "advent_of_code"
publish = false
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[lib]
doctest = false
[features]
test_lib = []
[dependencies]
pico-args = "0.5.0"

80
README.md
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@ -6,6 +6,8 @@ Solutions for [Advent of Code](https://adventofcode.com/) in [Rust](https://www.
<!--- advent_readme_stars table --->
<!--- benchmarking table --->
---
## Template setup
@ -17,7 +19,7 @@ This template supports all major OS (macOS, Linux, Windows).
1. Open [the template repository](https://github.com/fspoettel/advent-of-code-rust) on Github.
2. Click [Use this template](https://github.com/fspoettel/advent-of-code-rust/generate) and create your repository.
3. Clone your repository to your computer.
4. If you are solving a previous year's aoc and want to use the `aoc-cli` integration, change the `AOC_YEAR` variable in `.cargo/config.toml` to reflect that.
4. If you are solving a previous year's advent of code, change the `AOC_YEAR` variable in `.cargo/config.toml` to reflect the year you are solving.
### Setup rust 💻
@ -38,18 +40,18 @@ This template supports all major OS (macOS, Linux, Windows).
cargo scaffold <day>
# output:
# Created module "src/bin/01.rs"
# Created empty input file "src/inputs/01.txt"
# Created empty example file "src/examples/01.txt"
# Created module file "src/bin/01.rs"
# Created empty input file "data/inputs/01.txt"
# Created empty example file "data/examples/01.txt"
# ---
# 🎄 Type `cargo solve 01` to run your solution.
```
Individual solutions live in the `./src/bin/` directory as separate binaries.
Individual solutions live in the `./src/bin/` directory as separate binaries. _Inputs_ and _examples_ live in the the `./data` directory.
Every [solution](https://github.com/fspoettel/advent-of-code-rust/blob/main/src/bin/scaffold.rs#L11-L41) has _unit tests_ referencing its _example_ file. Use these unit tests to develop and debug your solution against the example input. For some puzzles, it might be easier to forgo the example file and hardcode inputs into the tests.
Every [solution](https://github.com/fspoettel/advent-of-code-rust/blob/main/src/bin/scaffold.rs#L11-L41) has _unit tests_ referencing its _example_ file. Use these unit tests to develop and debug your solutions against the example input.
When editing a solution, `rust-analyzer` will display buttons for running / debugging unit tests above the unit test blocks.
Tip: when editing a solution, `rust-analyzer` will display buttons for running / debugging unit tests above the unit test blocks.
### Download input & description for a day
@ -61,19 +63,14 @@ When editing a solution, `rust-analyzer` will display buttons for running / debu
cargo download <day>
# output:
# Loaded session cookie from "/Users/<snip>/.adventofcode.session".
# Fetching puzzle for day 1, 2022...
# Saving puzzle description to "src/puzzles/01.md"...
# Downloading input for day 1, 2022...
# Saving puzzle input to "src/inputs/01.txt"...
# Done!
# [INFO aoc] 🎄 aoc-cli - Advent of Code command-line tool
# [INFO aoc_client] 🎅 Saved puzzle to 'data/puzzles/01.md'
# [INFO aoc_client] 🎅 Saved input to 'data/inputs/01.txt'
# ---
# 🎄 Successfully wrote input to "src/inputs/01.txt".
# 🎄 Successfully wrote puzzle to "src/puzzles/01.md".
# 🎄 Successfully wrote input to "data/inputs/01.txt".
# 🎄 Successfully wrote puzzle to "data/puzzles/01.md".
```
Puzzle descriptions are stored in `src/puzzles` as markdown files. Puzzle inputs are not checked into git. [Reasoning](https://old.reddit.com/r/adventofcode/comments/k99rod/sharing_input_data_were_we_requested_not_to/gf2ukkf/?context=3).
### Run solutions for a day
```sh
@ -81,19 +78,17 @@ Puzzle descriptions are stored in `src/puzzles` as markdown files. Puzzle inputs
cargo solve <day>
# output:
# Finished dev [unoptimized + debuginfo] target(s) in 0.13s
# Running `target/debug/01`
# 🎄 Part 1 🎄
#
# 6 (elapsed: 37.03µs)
#
# 🎄 Part 2 🎄
#
# 9 (elapsed: 33.18µs)
# Part 1: 42 (166.0ns)
# Part 2: 42 (41.0ns)
```
`solve` is an alias for `cargo run --bin`. To run an optimized version for benchmarking, append the `--release` flag.
The `solve` command runs your solution. If you set the `--release` flag, real puzzle _inputs_ will be passed to your solution, otherwise the _example_ inputs will be used.
Displayed _timings_ show the raw execution time of your solution without overhead (e.g. file reads).
If you append the `--time` flag to the command, the runner will run your code between `10` and `10.000` times - depending on execution time of first execution - and print the average execution time.
For example, a benchmarked execution against real inputs of day 1 would look like `cargo solve 1 --release --time`. Displayed _timings_ show the raw execution time of your solution without overhead like file reads.
#### Submitting solutions
@ -112,22 +107,21 @@ cargo all
# ----------
# | Day 01 |
# ----------
# 🎄 Part 1 🎄
#
# 0 (elapsed: 170.00µs)
#
# 🎄 Part 2 🎄
#
# 0 (elapsed: 30.00µs)
# Part 1: 42 (19.0ns)
# Part 2: 42 (19.0ns)
# <...other days...>
# Total: 0.20ms
```
`all` is an alias for `cargo run`. To run an optimized version for benchmarking, use the `--release` flag.
This runs all solutions sequentially and prints output to the command-line. Same as for the `solve` command, `--release` controls whether real inputs will be used.
_Total timing_ is computed from individual solution _timings_ and excludes as much overhead as possible.
#### Update readme benchmarks
### Run all solutions against the example input
The template can output a table with solution times to your readme. Please note that these are not "scientific" benchmarks, understand them as a fun approximation. 😉
In order to generate a benchmarking table, run `cargo all --release --time`. If everything goes well, the command will output "_Successfully updated README with benchmarks._" after the execution finishes.
### Run all tests
```sh
cargo test
@ -148,6 +142,13 @@ cargo clippy
```
## Optional template features
### Download puzzle inputs via aoc-cli
1. Install [`aoc-cli`](https://github.com/scarvalhojr/aoc-cli/) via cargo: `cargo install aoc-cli --version 0.12.0`
2. Create an `.adventofcode.session` file in your home directory and paste your session cookie. To get this, press F12 anywhere on the Advent of Code website to open your browser developer tools. Look in _Cookies_ under the _Application_ or _Storage_ tab, and copy out the `session` cookie value. [^1]
Once installed, you can use the [download command](#download-input--description-for-a-day).
### Read puzzle description in terminal
> **Note**
@ -163,13 +164,6 @@ cargo read <day>
# ...the input...
```
### Download puzzle inputs via aoc-cli
1. Install [`aoc-cli`](https://github.com/scarvalhojr/aoc-cli/) via cargo: `cargo install aoc-cli --version 0.12.0`
2. Create an `.adventofcode.session` file in your home directory and paste your session cookie[^1] into it. To get this, press F12 anywhere on the Advent of Code website to open your browser developer tools. Look in your Cookies under the Application or Storage tab, and copy out the `session` cookie value.
Once installed, you can use the [download command](#download-input--description-for-a-day).
### Check code formatting in CI
Uncomment the `format` job in the `ci.yml` workflow to enable fmt checks in CI.

0
src/bin/.keep Normal file
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44
src/bin/download.rs
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@ -1,44 +0,0 @@
/*
* This file contains template code.
* There is no need to edit this file unless you want to change template functionality.
*/
use advent_of_code::aoc_cli;
use std::process;
struct Args {
day: u8,
}
fn parse_args() -> Result<Args, pico_args::Error> {
let mut args = pico_args::Arguments::from_env();
Ok(Args {
day: args.free_from_str()?,
})
}
fn main() {
let args = match parse_args() {
Ok(args) => args,
Err(e) => {
eprintln!("Failed to process arguments: {e}");
process::exit(1);
}
};
if aoc_cli::check().is_err() {
eprintln!("command \"aoc\" not found or not callable. Try running \"cargo install aoc-cli\" to install it.");
process::exit(1);
}
match aoc_cli::download(args.day) {
Ok(cmd_output) => {
if !cmd_output.status.success() {
process::exit(1);
}
}
Err(e) => {
eprintln!("failed to spawn aoc-cli: {e}");
process::exit(1);
}
}
}

44
src/bin/read.rs
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@ -1,44 +0,0 @@
/*
* This file contains template code.
* There is no need to edit this file unless you want to change template functionality.
*/
use advent_of_code::aoc_cli;
use std::process;
struct Args {
day: u8,
}
fn parse_args() -> Result<Args, pico_args::Error> {
let mut args = pico_args::Arguments::from_env();
Ok(Args {
day: args.free_from_str()?,
})
}
fn main() {
let args = match parse_args() {
Ok(args) => args,
Err(e) => {
eprintln!("Failed to process arguments: {e}");
process::exit(1);
}
};
if aoc_cli::check().is_err() {
eprintln!("command \"aoc\" not found or not callable. Try running \"cargo install aoc-cli\" to install it.");
process::exit(1);
}
match aoc_cli::read(args.day) {
Ok(cmd_output) => {
if !cmd_output.status.success() {
process::exit(1);
}
}
Err(e) => {
eprintln!("failed to spawn aoc-cli: {e}");
process::exit(1);
}
}
}

58
src/bin/solve.rs
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@ -1,58 +0,0 @@
/*
* This file contains template code.
* There is no need to edit this file unless you want to change template functionality.
*/
use std::process::{self, Command, Stdio};
struct Args {
day: u8,
release: bool,
submit: Option<u8>,
}
fn parse_args() -> Result<Args, pico_args::Error> {
let mut args = pico_args::Arguments::from_env();
Ok(Args {
day: args.free_from_str()?,
release: args.contains("--release"),
submit: args.opt_value_from_str("--submit")?,
})
}
fn run_solution(day: u8, release: bool, submit_part: Option<u8>) -> Result<(), std::io::Error> {
let day_padded = format!("{:02}", day);
let mut cmd_args = vec!["run".to_string(), "--bin".to_string(), day_padded];
if release {
cmd_args.push("--release".to_string());
}
if let Some(submit_part) = submit_part {
cmd_args.push("--".to_string());
cmd_args.push("--submit".to_string());
cmd_args.push(submit_part.to_string())
}
let mut cmd = Command::new("cargo")
.args(&cmd_args)
.stdout(Stdio::inherit())
.stderr(Stdio::inherit())
.spawn()?;
cmd.wait()?;
Ok(())
}
fn main() {
let args = match parse_args() {
Ok(args) => args,
Err(e) => {
eprintln!("Failed to process arguments: {}", e);
process::exit(1);
}
};
run_solution(args.day, args.release, args.submit).unwrap();
}

4
src/helpers.rs
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@ -1,4 +0,0 @@
/*
* Use this file if you want to extract helpers from your solutions.
* Example import from this file: `use advent_of_code::helpers::example_fn;`.
*/

291
src/lib.rs
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@ -1,290 +1 @@
/*
* This file contains template code.
* There is no need to edit this file unless you want to change template functionality.
* Prefer `./helpers.rs` if you want to extract code from your solutions.
*/
use std::env;
use std::fs;
pub mod helpers;
pub const ANSI_ITALIC: &str = "\x1b[3m";
pub const ANSI_BOLD: &str = "\x1b[1m";
pub const ANSI_RESET: &str = "\x1b[0m";
#[macro_export]
macro_rules! solve {
($day:expr, $part:expr, $solver:ident, $input:expr) => {{
use advent_of_code::{ANSI_BOLD, ANSI_ITALIC, ANSI_RESET, aoc_cli};
use std::fmt::Display;
use std::time::Instant;
use std::env;
use std::process;
fn submit_if_requested<T: Display>(result: T) {
let args: Vec<String> = env::args().collect();
if args.contains(&"--submit".into()) {
if aoc_cli::check().is_err() {
eprintln!("command \"aoc\" not found or not callable. Try running \"cargo install aoc-cli\" to install it.");
process::exit(1);
}
if args.len() < 3 {
eprintln!("Unexpected command-line input. Format: cargo solve 1 --submit 1");
process::exit(1);
}
let part_index = args.iter().position(|x| x == "--submit").unwrap() + 1;
let part_submit = match args[part_index].parse::<u8>() {
Ok(x) => x,
Err(_) => {
eprintln!("Unexpected command-line input. Format: cargo solve 1 --submit 1");
process::exit(1);
}
};
if part_submit == $part {
println!("Submitting puzzle answer for part {}...", $part);
aoc_cli::submit($day, $part, result).unwrap();
}
}
}
fn print_result<T: Display>(func: impl FnOnce(&str) -> Option<T>, input: &str) {
let timer = Instant::now();
let result = func(input);
let elapsed = timer.elapsed();
match result {
Some(result) => {
println!(
"{} {}(elapsed: {:.2?}){}",
result, ANSI_ITALIC, elapsed, ANSI_RESET
);
submit_if_requested(result);
}
None => {
println!("not solved.")
}
}
}
println!("🎄 {}Part {}{} 🎄", ANSI_BOLD, $part, ANSI_RESET);
print_result($solver, $input);
}};
}
pub fn read_file(folder: &str, day: u8) -> String {
let cwd = env::current_dir().unwrap();
let filepath = cwd.join("src").join(folder).join(format!("{day:02}.txt"));
let f = fs::read_to_string(filepath);
f.expect("could not open input file")
}
fn parse_time(val: &str, postfix: &str) -> f64 {
val.split(postfix).next().unwrap().parse().unwrap()
}
pub fn parse_exec_time(output: &str) -> f64 {
output.lines().fold(0_f64, |acc, l| {
if !l.contains("elapsed:") {
acc
} else {
let timing = l.split("(elapsed: ").last().unwrap();
// use `contains` istd. of `ends_with`: string may contain ANSI escape sequences.
// for possible time formats, see: https://github.com/rust-lang/rust/blob/1.64.0/library/core/src/time.rs#L1176-L1200
if timing.contains("ns)") {
acc // range below rounding precision.
} else if timing.contains("µs)") {
acc + parse_time(timing, "µs") / 1000_f64
} else if timing.contains("ms)") {
acc + parse_time(timing, "ms")
} else if timing.contains("s)") {
acc + parse_time(timing, "s") * 1000_f64
} else {
acc
}
}
})
}
/// copied from: https://github.com/rust-lang/rust/blob/1.64.0/library/std/src/macros.rs#L328-L333
#[cfg(test)]
macro_rules! assert_approx_eq {
($a:expr, $b:expr) => {{
let (a, b) = (&$a, &$b);
assert!(
(*a - *b).abs() < 1.0e-6,
"{} is not approximately equal to {}",
*a,
*b
);
}};
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_parse_exec_time() {
assert_approx_eq!(
parse_exec_time(&format!(
"🎄 Part 1 🎄\n0 (elapsed: 74.13ns){}\n🎄 Part 2 🎄\n0 (elapsed: 50.00ns){}",
ANSI_RESET, ANSI_RESET
)),
0_f64
);
assert_approx_eq!(
parse_exec_time("🎄 Part 1 🎄\n0 (elapsed: 755µs)\n🎄 Part 2 🎄\n0 (elapsed: 700µs)"),
1.455_f64
);
assert_approx_eq!(
parse_exec_time("🎄 Part 1 🎄\n0 (elapsed: 70µs)\n🎄 Part 2 🎄\n0 (elapsed: 1.45ms)"),
1.52_f64
);
assert_approx_eq!(
parse_exec_time(
"🎄 Part 1 🎄\n0 (elapsed: 10.3s)\n🎄 Part 2 🎄\n0 (elapsed: 100.50ms)"
),
10400.50_f64
);
}
}
pub mod aoc_cli {
use std::{
fmt::Display,
process::{Command, Output, Stdio},
};
#[derive(Debug)]
pub enum AocCliError {
CommandNotFound,
CommandNotCallable,
BadExitStatus(Output),
IoError,
}
impl Display for AocCliError {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
AocCliError::CommandNotFound => write!(f, "aoc-cli is not present in environment."),
AocCliError::CommandNotCallable => write!(f, "aoc-cli could not be called."),
AocCliError::BadExitStatus(_) => {
write!(f, "aoc-cli exited with a non-zero status.")
}
AocCliError::IoError => write!(f, "could not write output files to file system."),
}
}
}
pub fn check() -> Result<(), AocCliError> {
Command::new("aoc")
.arg("-V")
.output()
.map_err(|_| AocCliError::CommandNotFound)?;
Ok(())
}
pub fn read(day: u8) -> Result<Output, AocCliError> {
// TODO: output local puzzle if present.
let puzzle_path = get_puzzle_path(day);
let args = build_args(
"read",
&[
"--description-only".into(),
"--puzzle-file".into(),
puzzle_path,
],
day,
);
call_aoc_cli(&args)
}
pub fn download(day: u8) -> Result<Output, AocCliError> {
let input_path = get_input_path(day);
let puzzle_path = get_puzzle_path(day);
let args = build_args(
"download",
&[
"--overwrite".into(),
"--input-file".into(),
input_path.to_string(),
"--puzzle-file".into(),
puzzle_path.to_string(),
],
day,
);
let output = call_aoc_cli(&args)?;
if output.status.success() {
println!("---");
println!("🎄 Successfully wrote input to \"{}\".", &input_path);
println!("🎄 Successfully wrote puzzle to \"{}\".", &puzzle_path);
Ok(output)
} else {
Err(AocCliError::BadExitStatus(output))
}
}
pub fn submit<T: Display>(day: u8, part: u8, result: T) -> Result<Output, AocCliError> {
// workaround: the argument order is inverted for submit.
let mut args = build_args("submit", &[], day);
args.push(part.to_string());
args.push(result.to_string());
call_aoc_cli(&args)
}
fn get_input_path(day: u8) -> String {
let day_padded = format!("{day:02}");
format!("src/inputs/{day_padded}.txt")
}
fn get_puzzle_path(day: u8) -> String {
let day_padded = format!("{day:02}");
format!("src/puzzles/{day_padded}.md")
}
fn get_year() -> Option<u16> {
match std::env::var("AOC_YEAR") {
Ok(x) => x.parse().ok().or(None),
Err(_) => None,
}
}
fn build_args(command: &str, args: &[String], day: u8) -> Vec<String> {
let mut cmd_args = args.to_vec();
if let Some(year) = get_year() {
cmd_args.push("--year".into());
cmd_args.push(year.to_string());
}
cmd_args.append(&mut vec!["--day".into(), day.to_string(), command.into()]);
cmd_args
}
fn call_aoc_cli(args: &[String]) -> Result<Output, AocCliError> {
if cfg!(debug_assertions) {
println!("Calling >aoc with: {}", args.join(" "));
}
Command::new("aoc")
.args(args)
.stdout(Stdio::inherit())
.stderr(Stdio::inherit())
.output()
.map_err(|_| AocCliError::CommandNotCallable)
}
}
pub mod template;

132
src/main.rs
View file

@ -1,45 +1,93 @@
/*
* This file contains template code.
* There is no need to edit this file unless you want to change template functionality.
*/
use advent_of_code::{ANSI_BOLD, ANSI_ITALIC, ANSI_RESET};
use std::process::Command;
use advent_of_code::template::commands::{
all::all_handler, download::download_handler, read::read_handler, scaffold::scaffold_handler,
solve::solve_handler,
};
use args::{parse_args, AppArgs};
mod args {
use std::process;
pub enum AppArgs {
Download {
day: u8,
},
Read {
day: u8,
},
Scaffold {
day: u8,
},
Solve {
day: u8,
release: bool,
time: bool,
submit: Option<u8>,
},
All {
release: bool,
time: bool,
},
}
pub fn parse_args() -> Result<AppArgs, Box<dyn std::error::Error>> {
let mut args = pico_args::Arguments::from_env();
let app_args = match args.subcommand()?.as_deref() {
Some("all") => AppArgs::All {
release: args.contains("--release"),
time: args.contains("--time"),
},
Some("download") => AppArgs::Download {
day: args.free_from_str()?,
},
Some("read") => AppArgs::Read {
day: args.free_from_str()?,
},
Some("scaffold") => AppArgs::Scaffold {
day: args.free_from_str()?,
},
Some("solve") => AppArgs::Solve {
day: args.free_from_str()?,
release: args.contains("--release"),
submit: args.opt_value_from_str("--submit")?,
time: args.contains("--time"),
},
Some(x) => {
eprintln!("Unknown command: {}", x);
process::exit(1);
}
None => {
eprintln!("No command specified.");
process::exit(1);
}
};
let remaining = args.finish();
if !remaining.is_empty() {
eprintln!("Warning: unknown argument(s): {:?}.", remaining);
}
Ok(app_args)
}
}
fn main() {
let total: f64 = (1..=25)
.map(|day| {
let day = format!("{day:02}");
let mut args = vec!["run", "--bin", &day];
if cfg!(not(debug_assertions)) {
args.push("--release");
}
let cmd = Command::new("cargo").args(&args).output().unwrap();
println!("----------");
println!("{ANSI_BOLD}| Day {day} |{ANSI_RESET}");
println!("----------");
let output = String::from_utf8(cmd.stdout).unwrap();
let is_empty = output.is_empty();
println!(
"{}",
if is_empty {
"Not solved."
} else {
output.trim()
}
);
if is_empty {
0_f64
} else {
advent_of_code::parse_exec_time(&output)
}
})
.sum();
println!("{ANSI_BOLD}Total:{ANSI_RESET} {ANSI_ITALIC}{total:.2}ms{ANSI_RESET}");
match parse_args() {
Err(err) => {
eprintln!("Error: {}", err);
std::process::exit(1);
}
Ok(args) => match args {
AppArgs::All { release, time } => all_handler(release, time),
AppArgs::Download { day } => download_handler(day),
AppArgs::Read { day } => read_handler(day),
AppArgs::Scaffold { day } => scaffold_handler(day),
AppArgs::Solve {
day,
release,
time,
submit,
} => solve_handler(day, release, time, submit),
},
};
}

127
src/template/aoc_cli.rs Normal file
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@ -0,0 +1,127 @@
/// Wrapper module around the "aoc-cli" command-line.
use std::{
fmt::Display,
process::{Command, Output, Stdio},
};
#[derive(Debug)]
pub enum AocCliError {
CommandNotFound,
CommandNotCallable,
BadExitStatus(Output),
IoError,
}
impl Display for AocCliError {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
AocCliError::CommandNotFound => write!(f, "aoc-cli is not present in environment."),
AocCliError::CommandNotCallable => write!(f, "aoc-cli could not be called."),
AocCliError::BadExitStatus(_) => {
write!(f, "aoc-cli exited with a non-zero status.")
}
AocCliError::IoError => write!(f, "could not write output files to file system."),
}
}
}
pub fn check() -> Result<(), AocCliError> {
Command::new("aoc")
.arg("-V")
.output()
.map_err(|_| AocCliError::CommandNotFound)?;
Ok(())
}
pub fn read(day: u8) -> Result<Output, AocCliError> {
let puzzle_path = get_puzzle_path(day);
let args = build_args(
"read",
&[
"--description-only".into(),
"--puzzle-file".into(),
puzzle_path,
],
day,
);
call_aoc_cli(&args)
}
pub fn download(day: u8) -> Result<Output, AocCliError> {
let input_path = get_input_path(day);
let puzzle_path = get_puzzle_path(day);
let args = build_args(
"download",
&[
"--overwrite".into(),
"--input-file".into(),
input_path.to_string(),
"--puzzle-file".into(),
puzzle_path.to_string(),
],
day,
);
let output = call_aoc_cli(&args)?;
println!("---");
println!("🎄 Successfully wrote input to \"{}\".", &input_path);
println!("🎄 Successfully wrote puzzle to \"{}\".", &puzzle_path);
Ok(output)
}
pub fn submit(day: u8, part: u8, result: &str) -> Result<Output, AocCliError> {
// workaround: the argument order is inverted for submit.
let mut args = build_args("submit", &[], day);
args.push(part.to_string());
args.push(result.to_string());
call_aoc_cli(&args)
}
fn get_input_path(day: u8) -> String {
let day_padded = format!("{:02}", day);
format!("data/inputs/{}.txt", day_padded)
}
fn get_puzzle_path(day: u8) -> String {
let day_padded = format!("{:02}", day);
format!("data/puzzles/{}.md", day_padded)
}
fn get_year() -> Option<u16> {
match std::env::var("AOC_YEAR") {
Ok(x) => x.parse().ok().or(None),
Err(_) => None,
}
}
fn build_args(command: &str, args: &[String], day: u8) -> Vec<String> {
let mut cmd_args = args.to_vec();
if let Some(year) = get_year() {
cmd_args.push("--year".into());
cmd_args.push(year.to_string());
}
cmd_args.append(&mut vec!["--day".into(), day.to_string(), command.into()]);
cmd_args
}
fn call_aoc_cli(args: &[String]) -> Result<Output, AocCliError> {
// println!("Calling >aoc with: {}", args.join(" "));
let output = Command::new("aoc")
.args(args)
.stdout(Stdio::inherit())
.stderr(Stdio::inherit())
.output()
.map_err(|_| AocCliError::CommandNotCallable)?;
if output.status.success() {
Ok(output)
} else {
Err(AocCliError::BadExitStatus(output))
}
}

261
src/template/commands/all.rs Normal file
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@ -0,0 +1,261 @@
use std::io;
use crate::template::{
readme_benchmarks::{self, Timings},
ANSI_BOLD, ANSI_ITALIC, ANSI_RESET,
};
pub fn all_handler(is_release: bool, is_timed: bool) {
let mut timings: Vec<Timings> = vec![];
(1..=25).for_each(|day| {
if day > 1 {
println!();
}
println!("{}Day {}{}", ANSI_BOLD, day, ANSI_RESET);
println!("------");
let output = child_commands::run_solution(day, is_timed, is_release).unwrap();
if output.is_empty() {
println!("Not solved.");
} else {
let val = child_commands::parse_exec_time(&output, day);
timings.push(val);
}
});
if is_timed {
let total_millis = timings.iter().map(|x| x.total_nanos).sum::<f64>() / 1000000_f64;
println!(
"\n{}Total:{} {}{:.2}ms{}",
ANSI_BOLD, ANSI_RESET, ANSI_ITALIC, total_millis, ANSI_RESET
);
if is_release {
match readme_benchmarks::update(timings, total_millis) {
Ok(_) => println!("Successfully updated README with benchmarks."),
Err(_) => {
eprintln!("Failed to update readme with benchmarks.");
}
}
}
}
}
#[derive(Debug)]
pub enum Error {
BrokenPipe,
Parser(String),
IO(io::Error),
}
impl From<std::io::Error> for Error {
fn from(e: std::io::Error) -> Self {
Error::IO(e)
}
}
pub fn get_path_for_bin(day: usize) -> String {
let day_padded = format!("{:02}", day);
format!("./src/bin/{}.rs", day_padded)
}
/// All solutions live in isolated binaries.
/// This module encapsulates interaction with these binaries, both invoking them as well as parsing the timing output.
mod child_commands {
use super::{get_path_for_bin, Error};
use std::{
io::{BufRead, BufReader},
path::Path,
process::{Command, Stdio},
thread,
};
/// Run the solution bin for a given day
pub fn run_solution(
day: usize,
is_timed: bool,
is_release: bool,
) -> Result<Vec<String>, Error> {
let day_padded = format!("{:02}", day);
// skip command invocation for days that have not been scaffolded yet.
if !Path::new(&get_path_for_bin(day)).exists() {
return Ok(vec![]);
}
let mut args = vec!["run", "--quiet", "--bin", &day_padded];
if is_release {
args.push("--release");
}
if is_timed {
// mirror `--time` flag to child invocations.
args.push("--");
args.push("--time");
}
// spawn child command with piped stdout/stderr.
// forward output to stdout/stderr while grabbing stdout lines.
let mut cmd = Command::new("cargo")
.args(&args)
.stdout(Stdio::piped())
.stderr(Stdio::piped())
.spawn()?;
let stdout = BufReader::new(cmd.stdout.take().ok_or(super::Error::BrokenPipe)?);
let stderr = BufReader::new(cmd.stderr.take().ok_or(super::Error::BrokenPipe)?);
let mut output = vec![];
let thread = thread::spawn(move || {
stderr.lines().for_each(|line| {
eprintln!("{}", line.unwrap());
});
});
for line in stdout.lines() {
let line = line.unwrap();
println!("{}", line);
output.push(line);
}
thread.join().unwrap();
cmd.wait()?;
Ok(output)
}
pub fn parse_exec_time(output: &[String], day: usize) -> super::Timings {
let mut timings = super::Timings {
day,
part_1: None,
part_2: None,
total_nanos: 0_f64,
};
output
.iter()
.filter_map(|l| {
if !l.contains(" samples)") {
return None;
}
let (timing_str, nanos) = match parse_time(l) {
Some(v) => v,
None => {
eprintln!("Could not parse timings from line: {l}");
return None;
}
};
let part = l.split(':').next()?;
Some((part, timing_str, nanos))
})
.for_each(|(part, timing_str, nanos)| {
if part.contains("Part 1") {
timings.part_1 = Some(timing_str.into());
} else if part.contains("Part 2") {
timings.part_2 = Some(timing_str.into());
}
timings.total_nanos += nanos;
});
timings
}
fn parse_to_float(s: &str, postfix: &str) -> Option<f64> {
s.split(postfix).next()?.parse().ok()
}
fn parse_time(line: &str) -> Option<(&str, f64)> {
// for possible time formats, see: https://github.com/rust-lang/rust/blob/1.64.0/library/core/src/time.rs#L1176-L1200
let str_timing = line
.split(" samples)")
.next()?
.split('(')
.last()?
.split('@')
.next()?
.trim();
let parsed_timing = match str_timing {
s if s.contains("ns") => s.split("ns").next()?.parse::<f64>().ok(),
s if s.contains("µs") => parse_to_float(s, "µs").map(|x| x * 1000_f64),
s if s.contains("ms") => parse_to_float(s, "ms").map(|x| x * 1000000_f64),
s => parse_to_float(s, "s").map(|x| x * 1000000000_f64),
}?;
Some((str_timing, parsed_timing))
}
/// copied from: https://github.com/rust-lang/rust/blob/1.64.0/library/std/src/macros.rs#L328-L333
#[cfg(feature = "test_lib")]
macro_rules! assert_approx_eq {
($a:expr, $b:expr) => {{
let (a, b) = (&$a, &$b);
assert!(
(*a - *b).abs() < 1.0e-6,
"{} is not approximately equal to {}",
*a,
*b
);
}};
}
#[cfg(feature = "test_lib")]
mod tests {
use super::parse_exec_time;
#[test]
fn test_well_formed() {
let res = parse_exec_time(
&[
"Part 1: 0 (74.13ns @ 100000 samples)".into(),
"Part 2: 10 (74.13ms @ 99999 samples)".into(),
"".into(),
],
1,
);
assert_approx_eq!(res.total_nanos, 74130074.13_f64);
assert_eq!(res.part_1.unwrap(), "74.13ns");
assert_eq!(res.part_2.unwrap(), "74.13ms");
}
#[test]
fn test_patterns_in_input() {
let res = parse_exec_time(
&[
"Part 1: @ @ @ ( ) ms (2s @ 5 samples)".into(),
"Part 2: 10s (100ms @ 1 samples)".into(),
"".into(),
],
1,
);
assert_approx_eq!(res.total_nanos, 2100000000_f64);
assert_eq!(res.part_1.unwrap(), "2s");
assert_eq!(res.part_2.unwrap(), "100ms");
}
#[test]
fn test_missing_parts() {
let res = parse_exec_time(
&[
"Part 1: ✖ ".into(),
"Part 2: ✖ ".into(),
"".into(),
],
1,
);
assert_approx_eq!(res.total_nanos, 0_f64);
assert_eq!(res.part_1.is_none(), true);
assert_eq!(res.part_2.is_none(), true);
}
}
}

14
src/template/commands/download.rs Normal file
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@ -0,0 +1,14 @@
use crate::template::aoc_cli;
use std::process;
pub fn download_handler(day: u8) {
if aoc_cli::check().is_err() {
eprintln!("command \"aoc\" not found or not callable. Try running \"cargo install aoc-cli\" to install it.");
process::exit(1);
}
if let Err(e) = aoc_cli::download(day) {
eprintln!("failed to call aoc-cli: {}", e);
process::exit(1);
};
}

5
src/template/commands/mod.rs Normal file
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@ -0,0 +1,5 @@
pub mod all;
pub mod download;
pub mod read;
pub mod scaffold;
pub mod solve;

15
src/template/commands/read.rs Normal file
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@ -0,0 +1,15 @@
use std::process;
use crate::template::aoc_cli;
pub fn read_handler(day: u8) {
if aoc_cli::check().is_err() {
eprintln!("command \"aoc\" not found or not callable. Try running \"cargo install aoc-cli\" to install it.");
process::exit(1);
}
if let Err(e) = aoc_cli::read(day) {
eprintln!("failed to call aoc-cli: {}", e);
process::exit(1);
};
}

49
src/bin/scaffold.rs → src/template/commands/scaffold.rs
View file

@ -1,7 +1,3 @@
/*
* This file contains template code.
* There is no need to edit this file unless you want to change template functionality.
*/
use std::{
fs::{File, OpenOptions},
io::Write,
@ -16,11 +12,7 @@ pub fn part_two(input: &str) -> Option<u32> {
None
}
fn main() {
let input = &advent_of_code::read_file("inputs", DAY);
advent_of_code::solve!(DAY, 1, part_one, input);
advent_of_code::solve!(DAY, 2, part_two, input);
}
advent_of_code::main!(DAY);
#[cfg(test)]
mod tests {
@ -28,23 +20,18 @@ mod tests {
#[test]
fn test_part_one() {
let input = advent_of_code::read_file("examples", DAY);
assert_eq!(part_one(&input), None);
let result = part_one(&advent_of_code::template::read_file("examples", DAY));
assert_eq!(result, None);
}
#[test]
fn test_part_two() {
let input = advent_of_code::read_file("examples", DAY);
assert_eq!(part_two(&input), None);
let result = part_two(&advent_of_code::template::read_file("examples", DAY));
assert_eq!(result, None);
}
}
"#;
fn parse_args() -> Result<u8, pico_args::Error> {
let mut args = pico_args::Arguments::from_env();
args.free_from_str()
}
fn safe_create_file(path: &str) -> Result<File, std::io::Error> {
OpenOptions::new().write(true).create_new(true).open(path)
}
@ -53,25 +40,17 @@ fn create_file(path: &str) -> Result<File, std::io::Error> {
OpenOptions::new().write(true).create(true).open(path)
}
fn main() {
let day = match parse_args() {
Ok(day) => day,
Err(_) => {
eprintln!("Need to specify a day (as integer). example: `cargo scaffold 7`");
process::exit(1);
}
};
pub fn scaffold_handler(day: u8) {
let day_padded = format!("{:02}", day);
let day_padded = format!("{day:02}");
let input_path = format!("src/inputs/{day_padded}.txt");
let example_path = format!("src/examples/{day_padded}.txt");
let module_path = format!("src/bin/{day_padded}.rs");
let input_path = format!("data/inputs/{}.txt", day_padded);
let example_path = format!("data/examples/{}.txt", day_padded);
let module_path = format!("src/bin/{}.rs", day_padded);
let mut file = match safe_create_file(&module_path) {
Ok(file) => file,
Err(e) => {
eprintln!("Failed to create module file: {e}");
eprintln!("Failed to create module file: {}", e);
process::exit(1);
}
};
@ -81,7 +60,7 @@ fn main() {
println!("Created module file \"{}\"", &module_path);
}
Err(e) => {
eprintln!("Failed to write module contents: {e}");
eprintln!("Failed to write module contents: {}", e);
process::exit(1);
}
}
@ -91,7 +70,7 @@ fn main() {
println!("Created empty input file \"{}\"", &input_path);
}
Err(e) => {
eprintln!("Failed to create input file: {e}");
eprintln!("Failed to create input file: {}", e);
process::exit(1);
}
}
@ -101,7 +80,7 @@ fn main() {
println!("Created empty example file \"{}\"", &example_path);
}
Err(e) => {
eprintln!("Failed to create example file: {e}");
eprintln!("Failed to create example file: {}", e);
process::exit(1);
}
}

31
src/template/commands/solve.rs Normal file
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@ -0,0 +1,31 @@
use std::process::{Command, Stdio};
pub fn solve_handler(day: u8, release: bool, time: bool, submit_part: Option<u8>) {
let day_padded = format!("{:02}", day);
let mut cmd_args = vec!["run".to_string(), "--bin".to_string(), day_padded];
if release {
cmd_args.push("--release".to_string());
}
cmd_args.push("--".to_string());
if let Some(submit_part) = submit_part {
cmd_args.push("--submit".to_string());
cmd_args.push(submit_part.to_string())
}
if time {
cmd_args.push("--time".to_string());
}
let mut cmd = Command::new("cargo")
.args(&cmd_args)
.stdout(Stdio::inherit())
.stderr(Stdio::inherit())
.spawn()
.unwrap();
cmd.wait().unwrap();
}

34
src/template/mod.rs Normal file
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@ -0,0 +1,34 @@
use std::{env, fs};
pub mod aoc_cli;
pub mod commands;
pub mod readme_benchmarks;
pub mod runner;
pub const ANSI_ITALIC: &str = "\x1b[3m";
pub const ANSI_BOLD: &str = "\x1b[1m";
pub const ANSI_RESET: &str = "\x1b[0m";
/// Helper function that reads a text file to a string.
pub fn read_file(folder: &str, day: u8) -> String {
let cwd = env::current_dir().unwrap();
let filepath = cwd
.join("data")
.join(folder)
.join(format!("{:02}.txt", day));
let f = fs::read_to_string(filepath);
f.expect("could not open input file")
}
/// main! produces a block setting up the input and runner for each part.
#[macro_export]
macro_rules! main {
($day:expr) => {
fn main() {
use advent_of_code::template::runner::*;
let input = advent_of_code::template::read_file("inputs", $day);
run_part(part_one, &input, $day, 1);
run_part(part_two, &input, $day, 2);
}
};
}

183
src/template/readme_benchmarks.rs Normal file
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@ -0,0 +1,183 @@
/// Module that updates the readme me with timing information.
/// The approach taken is similar to how `aoc-readme-stars` handles this.
use std::{fs, io};
static MARKER: &str = "<!--- benchmarking table --->";
#[derive(Debug)]
pub enum Error {
Parser(String),
IO(io::Error),
}
impl From<std::io::Error> for Error {
fn from(e: std::io::Error) -> Self {
Error::IO(e)
}
}
#[derive(Clone)]
pub struct Timings {
pub day: usize,
pub part_1: Option<String>,
pub part_2: Option<String>,
pub total_nanos: f64,
}
pub struct TablePosition {
pos_start: usize,
pos_end: usize,
}
pub fn get_path_for_bin(day: usize) -> String {
let day_padded = format!("{:02}", day);
format!("./src/bin/{}.rs", day_padded)
}
fn locate_table(readme: &str) -> Result<TablePosition, Error> {
let matches: Vec<_> = readme.match_indices(MARKER).collect();
if matches.len() > 2 {
return Err(Error::Parser(
"{}: too many occurences of marker in README.".into(),
));
}
let pos_start = matches
.first()
.map(|m| m.0)
.ok_or_else(|| Error::Parser("Could not find table start position.".into()))?;
let pos_end = matches
.last()
.map(|m| m.0 + m.1.len())
.ok_or_else(|| Error::Parser("Could not find table end position.".into()))?;
Ok(TablePosition { pos_start, pos_end })
}
fn construct_table(prefix: &str, timings: Vec<Timings>, total_millis: f64) -> String {
let header = format!("{prefix} Benchmarks");
let mut lines: Vec<String> = vec![
MARKER.into(),
header,
"".into(),
"| Day | Part 1 | Part 2 |".into(),
"| :---: | :---: | :---: |".into(),
];
timings.into_iter().for_each(|timing| {
let path = get_path_for_bin(timing.day);
lines.push(format!(
"| [Day {}]({}) | `{}` | `{}` |",
timing.day,
path,
timing.part_1.unwrap_or_else(|| "-".into()),
timing.part_2.unwrap_or_else(|| "-".into())
));
});
lines.push("".into());
lines.push(format!("**Total: {:.2}ms**", total_millis));
lines.push(MARKER.into());
lines.join("\n")
}
fn update_content(s: &mut String, timings: Vec<Timings>, total_millis: f64) -> Result<(), Error> {
let positions = locate_table(s)?;
let table = construct_table("##", timings, total_millis);
s.replace_range(positions.pos_start..positions.pos_end, &table);
Ok(())
}
pub fn update(timings: Vec<Timings>, total_millis: f64) -> Result<(), Error> {
let path = "README.md";
let mut readme = String::from_utf8_lossy(&fs::read(path)?).to_string();
update_content(&mut readme, timings, total_millis)?;
fs::write(path, &readme)?;
Ok(())
}
#[cfg(feature = "test_lib")]
mod tests {
use super::{update_content, Timings, MARKER};
fn get_mock_timings() -> Vec<Timings> {
vec![
Timings {
day: 1,
part_1: Some("10ms".into()),
part_2: Some("20ms".into()),
total_nanos: 3e+10,
},
Timings {
day: 2,
part_1: Some("30ms".into()),
part_2: Some("40ms".into()),
total_nanos: 7e+10,
},
Timings {
day: 4,
part_1: Some("40ms".into()),
part_2: Some("50ms".into()),
total_nanos: 9e+10,
},
]
}
#[test]
#[should_panic]
fn errors_if_marker_not_present() {
let mut s = "# readme".to_string();
update_content(&mut s, get_mock_timings(), 190.0).unwrap();
}
#[test]
#[should_panic]
fn errors_if_too_many_markers_present() {
let mut s = format!("{} {} {}", MARKER, MARKER, MARKER);
update_content(&mut s, get_mock_timings(), 190.0).unwrap();
}
#[test]
fn updates_empty_benchmarks() {
let mut s = format!("foo\nbar\n{}{}\nbaz", MARKER, MARKER);
update_content(&mut s, get_mock_timings(), 190.0).unwrap();
assert_eq!(s.contains("## Benchmarks"), true);
}
#[test]
fn updates_existing_benchmarks() {
let mut s = format!("foo\nbar\n{}{}\nbaz", MARKER, MARKER);
update_content(&mut s, get_mock_timings(), 190.0).unwrap();
update_content(&mut s, get_mock_timings(), 190.0).unwrap();
assert_eq!(s.matches(MARKER).collect::<Vec<&str>>().len(), 2);
assert_eq!(s.matches("## Benchmarks").collect::<Vec<&str>>().len(), 1);
}
#[test]
fn format_benchmarks() {
let mut s = format!("foo\nbar\n{}\n{}\nbaz", MARKER, MARKER);
update_content(&mut s, get_mock_timings(), 190.0).unwrap();
let expected = [
"foo",
"bar",
"<!--- benchmarking table --->",
"## Benchmarks",
"",
"| Day | Part 1 | Part 2 |",
"| :---: | :---: | :---: |",
"| [Day 1](./src/bin/01.rs) | `10ms` | `20ms` |",
"| [Day 2](./src/bin/02.rs) | `30ms` | `40ms` |",
"| [Day 4](./src/bin/04.rs) | `40ms` | `50ms` |",
"",
"**Total: 190.00ms**",
"<!--- benchmarking table --->",
"baz",
]
.join("\n");
assert_eq!(s, expected);
}
}

165
src/template/runner.rs Normal file
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@ -0,0 +1,165 @@
/// Encapsulates code that interacts with solution functions.
use crate::template::{aoc_cli, ANSI_ITALIC, ANSI_RESET};
use std::fmt::Display;
use std::io::{stdout, Write};
use std::process::Output;
use std::time::{Duration, Instant};
use std::{cmp, env, process};
use super::ANSI_BOLD;
pub fn run_part<I: Clone, T: Display>(func: impl Fn(I) -> Option<T>, input: I, day: u8, part: u8) {
let part_str = format!("Part {}", part);
let (result, duration, samples) =
run_timed(func, input, |result| print_result(result, &part_str, ""));
print_result(&result, &part_str, &format_duration(&duration, samples));
if let Some(result) = result {
submit_result(result, day, part);
}
}
/// Run a solution part. The behavior differs depending on whether we are running a release or debug build:
/// 1. in debug, the function is executed once.
/// 2. in release, the function is benched (approx. 1 second of execution time or 10 samples, whatever take longer.)
fn run_timed<I: Clone, T>(
func: impl Fn(I) -> T,
input: I,
hook: impl Fn(&T),
) -> (T, Duration, u128) {
let timer = Instant::now();
let result = func(input.clone());
let base_time = timer.elapsed();
hook(&result);
let run = match std::env::args().any(|x| x == "--time") {
true => bench(func, input, &base_time),
false => (base_time, 1),
};
(result, run.0, run.1)
}
fn bench<I: Clone, T>(func: impl Fn(I) -> T, input: I, base_time: &Duration) -> (Duration, u128) {
let mut stdout = stdout();
print!(" > {}benching{}", ANSI_ITALIC, ANSI_RESET);
let _ = stdout.flush();
let bench_iterations = cmp::min(
10000,
cmp::max(
Duration::from_secs(1).as_nanos() / cmp::max(base_time.as_nanos(), 10),
10,
),
);
let mut timers: Vec<Duration> = vec![];
for _ in 0..bench_iterations {
// need a clone here to make the borrow checker happy.
let cloned = input.clone();
let timer = Instant::now();
func(cloned);
timers.push(timer.elapsed());
}
(
Duration::from_nanos(average_duration(&timers) as u64),
bench_iterations as u128,
)
}
fn average_duration(numbers: &[Duration]) -> u128 {
numbers.iter().map(|d| d.as_nanos()).sum::<u128>() / numbers.len() as u128
}
fn format_duration(duration: &Duration, samples: u128) -> String {
if samples == 1 {
format!(" ({:.1?})", duration)
} else {
format!(" ({:.1?} @ {} samples)", duration, samples)
}
}
fn print_result<T: Display>(result: &Option<T>, part: &str, duration_str: &str) {
let is_intermediate_result = duration_str.is_empty();
match result {
Some(result) => {
if result.to_string().contains('\n') {
let str = format!("{}: ▼ {}", part, duration_str);
if is_intermediate_result {
print!("{}", str);
} else {
print!("\r");
println!("{}", str);
println!("{}", result);
}
} else {
let str = format!(
"{}: {}{}{}{}",
part, ANSI_BOLD, result, ANSI_RESET, duration_str
);
if is_intermediate_result {
print!("{}", str);
} else {
print!("\r");
println!("{}", str);
}
}
}
None => {
if is_intermediate_result {
print!("{}: ✖", part);
} else {
print!("\r");
println!("{}: ✖ ", part);
}
}
}
}
/// Parse the arguments passed to `solve` and try to submit one part of the solution if:
/// 1. we are in `--release` mode.
/// 2. aoc-cli is installed.
fn submit_result<T: Display>(
result: T,
day: u8,
part: u8,
) -> Option<Result<Output, aoc_cli::AocCliError>> {
let args: Vec<String> = env::args().collect();
if !args.contains(&"--submit".into()) {
return None;
}
if args.len() < 3 {
eprintln!("Unexpected command-line input. Format: cargo solve 1 --submit 1");
process::exit(1);
}
let part_index = args.iter().position(|x| x == "--submit").unwrap() + 1;
let part_submit = match args[part_index].parse::<u8>() {
Ok(x) => x,
Err(_) => {
eprintln!("Unexpected command-line input. Format: cargo solve 1 --submit 1");
process::exit(1);
}
};
if part_submit != part {
return None;
}
if aoc_cli::check().is_err() {
eprintln!("command \"aoc\" not found or not callable. Try running \"cargo install aoc-cli\" to install it.");
process::exit(1);
}
println!("Submitting result via aoc-cli...");
Some(aoc_cli::submit(day, part, &result.to_string()))
}