hurry

Convenient macros for creating pointer types (Box, Rc, Arc, etc.) in Rust.

Installation

Add this to your Cargo.toml:

[dependencies]
hurry = "0.1"

To use the procedural macro for generating custom shorthand macros, enable the macros feature:

[dependencies]
hurry = { version = "0.1", features = ["macros"] }

Usage

The hurry crate provides convenient macros for creating common pointer types:

Basic Pointer Types

use hurry::*;

// Create a Box
let boxed = boxx!(42);
assert_eq!(*boxed, 42);

// Create an Rc
let shared = rc!(String::from("hello"));
let clone = shared.clone();
assert_eq!(*shared, "hello");

// Create an Arc
let atomic = arc!(vec![1, 2, 3]);
let thread_clone = atomic.clone();
// Can be safely shared across threads

Interior Mutability Types

use hurry::*;

// Rc<RefCell<T>> for single-threaded interior mutability
let cell = rc_refcell!(0);
*cell.borrow_mut() += 10;
assert_eq!(*cell.borrow(), 10);

// Arc<Mutex<T>> for thread-safe interior mutability
let mutex = arc_mutex!(0);
*x.lock().unwrap() += 20;
assert_eq!(*x.lock().unwrap(), 20);

// Arc<RwLock<T>> for thread-safe read-write access
let rwlock = arc_rwlock!(0);
*x.write().unwrap() += 30;
assert_eq!(*x.read().unwrap(), 30);

Procedural Macros

The hurry crate also provides a procedural macro for generating shorthand macros for your own types:

use hurry_macros::shorthand;

struct MyType {
    value: i32,
}

#[shorthand]
impl MyType {
    pub fn new(value: i32) -> Self {
        MyType { value }
    }
}

// This generates a `my_type!` macro for creating instances
let instance = my_type!(42);
assert_eq!(instance.value, 42);

The #[shorthand] attribute generates a macro named after the type in snake_case that calls the new method.

Available Macros

Declarative Macros

• boxx!(value) → Box::new(value)
• rc!(value) → Rc::new(value)
• arc!(value) → Arc::new(value)
• rc_refcell!(value) → Rc<RefCell<T>>::new(RefCell::new(value))
• arc_mutex!(value) → Arc<Mutex<T>>::new(Mutex::new(value))
• arc_rwlock!(value) → Arc<RwLock<T>>::new(RwLock::new(value))
• mutex!(value) → Mutex::new(value)
• rwlock!(value) → RwLock::new(value)
• cell!(value) → Cell::new(value)
• refcell!(value) → RefCell::new(value)
• pin_box!(value) → Box::pin(value)
• vec_box!(values...) → vec![Box::new(value), ...]
• vec_rc!(values...) → vec![Rc::new(value), ...]
• vec_arc!(values...) → vec![Arc::new(value), ...]
• cow_owned!(value) → Cow::Owned(value)
• cow_borrowed!(value) → Cow::Borrowed(value)

Procedural Macros

• #[shorthand] → Generates a shorthand macro for types with a new method

Documentation

Full API documentation is available at docs.rs/hurry.

License

Licensed under either of:

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.