Systems Programming Rust Project

$ARGUMENTS

Instructions

1. Analyze Project Type

Determine the project type from user requirements:

• Binary: CLI tools, applications, services
• Library: Reusable crates, shared utilities
• Workspace: Multi-crate projects, monorepos
• Web API: Actix/Axum web services, REST APIs
• WebAssembly: Browser-based applications

2. Initialize Project with Cargo

# Create binary project
cargo new project-name
cd project-name

# Or create library
cargo new --lib library-name

# Initialize git (cargo does this automatically)
# Add to .gitignore if needed
echo "/target" >> .gitignore
echo "Cargo.lock" >> .gitignore  # For libraries only

3. Generate Binary Project Structure

binary-project/
├── Cargo.toml
├── README.md
├── src/
│   ├── main.rs
│   ├── config.rs
│   ├── cli.rs
│   ├── commands/
│   │   ├── mod.rs
│   │   ├── init.rs
│   │   └── run.rs
│   ├── error.rs
│   └── lib.rs
├── tests/
│   ├── integration_test.rs
│   └── common/
│       └── mod.rs
├── benches/
│   └── benchmark.rs
└── examples/
    └── basic_usage.rs

Cargo.toml:

[package]
name = "project-name"
version = "0.1.0"
edition = "2021"
rust-version = "1.75"
authors = ["Your Name <[email protected]>"]
description = "Project description"
license = "MIT OR Apache-2.0"
repository = "https://github.com/user/project-name"

[dependencies]
clap = { version = "4.5", features = ["derive"] }
tokio = { version = "1.36", features = ["full"] }
anyhow = "1.0"
serde = { version = "1.0", features = ["derive"] }
serde_json = "1.0"

[dev-dependencies]
criterion = "0.5"

[[bench]]
name = "benchmark"
harness = false

[profile.release]
opt-level = 3
lto = true
codegen-units = 1

src/main.rs:

use anyhow::Result;
use clap::Parser;

mod cli;
mod commands;
mod config;
mod error;

use cli::Cli;

#[tokio::main]
async fn main() -> Result<()> {
    let cli = Cli::parse();

    match cli.command {
        cli::Commands::Init(args) => commands::init::execute(args).await?,
        cli::Commands::Run(args) => commands::run::execute(args).await?,
    }

    Ok(())
}

src/cli.rs:

use clap::{Parser, Subcommand};

#[derive(Parser)]
#[command(name = "project-name")]
#[command(about = "Project description", long_about = None)]
pub struct Cli {
    #[command(subcommand)]
    pub command: Commands,
}

#[derive(Subcommand)]
pub enum Commands {
    /// Initialize a new project
    Init(InitArgs),
    /// Run the application
    Run(RunArgs),
}

#[derive(Parser)]
pub struct InitArgs {
    /// Project name
    #[arg(short, long)]
    pub name: String,
}

#[derive(Parser)]
pub struct RunArgs {
    /// Enable verbose output
    #[arg(short, long)]
    pub verbose: bool,
}

src/error.rs:

use std::fmt;

#[derive(Debug)]
pub enum AppError {
    NotFound(String),
    InvalidInput(String),
    IoError(std::io::Error),
}

impl fmt::Display for AppError {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        match self {
            AppError::NotFound(msg) => write!(f, "Not found: {}", msg),
            AppError::InvalidInput(msg) => write!(f, "Invalid input: {}", msg),
            AppError::IoError(e) => write!(f, "IO error: {}", e),
        }
    }
}

impl std::error::Error for AppError {}

pub type Result<T> = std::result::Result<T, AppError>;

4. Generate Library Project Structure

library-name/
├── Cargo.toml
├── README.md
├── src/
│   ├── lib.rs
│   ├── core.rs
│   ├── utils.rs
│   └── error.rs
├── tests/
│   └── integration_test.rs
└── examples/
    └── basic.rs

Cargo.toml for Library:

[package]
name = "library-name"
version = "0.1.0"
edition = "2021"
rust-version = "1.75"

[dependencies]
# Keep minimal for libraries

[dev-dependencies]
tokio-test = "0.4"

[lib]
name = "library_name"
path = "src/lib.rs"

src/lib.rs:

//! Library documentation
//!
//! # Examples
//!
//! ```
//! use library_name::core::CoreType;
//!
//! let instance = CoreType::new();
//! ```

pub mod core;
pub mod error;
pub mod utils;

pub use core::CoreType;
pub use error::{Error, Result};

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn it_works() {
        assert_eq!(2 + 2, 4);
    }
}

5. Generate Workspace Structure

workspace/
├── Cargo.toml
├── .gitignore
├── crates/
│   ├── api/
│   │   ├── Cargo.toml
│   │   └── src/
│   │       └── lib.rs
│   ├── core/
│   │   ├── Cargo.toml
│   │   └── src/
│   │       └── lib.rs
│   └── cli/
│       ├── Cargo.toml
│       └── src/
│           └── main.rs
└── tests/
    └── integration_test.rs

Cargo.toml (workspace root):

[workspace]
members = [
    "crates/api",
    "crates/core",
    "crates/cli",
]
resolver = "2"

[workspace.package]
version = "0.1.0"
edition = "2021"
rust-version = "1.75"
authors = ["Your Name <[email protected]>"]
license = "MIT OR Apache-2.0"

[workspace.dependencies]
tokio = { version = "1.36", features = ["full"] }
serde = { version = "1.0", features = ["derive"] }

[profile.release]
opt-level = 3
lto = true

6. Generate Web API Structure (Axum)

web-api/
├── Cargo.toml
├── src/
│   ├── main.rs
│   ├── routes/
│   │   ├── mod.rs
│   │   ├── users.rs
│   │   └── health.rs
│   ├── handlers/
│   │   ├── mod.rs
│   │   └── user_handler.rs
│   ├── models/
│   │   ├── mod.rs
│   │   └── user.rs
│   ├── services/
│   │   ├── mod.rs
│   │   └── user_service.rs
│   ├── middleware/
│   │   ├── mod.rs
│   │   └── auth.rs
│   └── error.rs
└── tests/
    └── api_tests.rs

Cargo.toml for Web API:

[package]
name = "web-api"
version = "0.1.0"
edition = "2021"

[dependencies]
axum = "0.7"
tokio = { version = "1.36", features = ["full"] }
tower = "0.4"
tower-http = { version = "0.5", features = ["trace", "cors"] }
serde = { version = "1.0", features = ["derive"] }
serde_json = "1.0"
sqlx = { version = "0.7", features = ["runtime-tokio-native-tls", "postgres"] }
tracing = "0.1"
tracing-subscriber = "0.3"

src/main.rs (Axum):

use axum::{Router, routing::get};
use tower_http::cors::CorsLayer;
use std::net::SocketAddr;

mod routes;
mod handlers;
mod models;
mod services;
mod error;

#[tokio::main]
async fn main() {
    tracing_subscriber::fmt::init();

    let app = Router::new()
        .route("/health", get(routes::health::health_check))
        .nest("/api/users", routes::users::router())
        .layer(CorsLayer::permissive());

    let addr = SocketAddr::from(([0, 0, 0, 0], 3000));
    tracing::info!("Listening on {}", addr);

    let listener = tokio::net::TcpListener::bind(addr).await.unwrap();
    axum::serve(listener, app).await.unwrap();
}

7. Configure Development Tools

Makefile:

.PHONY: build test lint fmt run clean bench