nova

Create newtypes with great convenience.

All types generated by the following macros implement Debug, Clone, Eq, PartialEq, Ord, PartialOrd and Hash. For Copy types, the newtype also implements Copy.

Usage

toml [dependencies] nova = "0.4"

Example

```rust use nova::newtype;

[newtype(serde, borrow = "str")]

pub type Meow = String;

[newtype(new, copy)]

pub(crate) type SpecialUuid = uuid::Uuid;

fn example() { let meow = Meow("this is a string".tostring()); let specialuuid = SpecialUuid::from(uuid::Uuid::new_v4());

// Get inner:
let inner = special_uuid.into_inner();

}

```

Supported attributes

Crate compatibility attributes

• serde: enables support for the serde attribute to derive Serialize and Deserialize for newtypes.
• sqlx: enables support for the sqlx attribute to derive sqlx::Type for newtypes.
• async_graphql: enables support for the async_graphql attribute to implement Scalar for newtypes.

Generation attributes

• copy: derives Copy on the newtype.
• opaque: disables generating a Deref and into_inner functions to create an opaque type.
• borrow = "<type>": sets the type to be used for the Deref implementation, if needed.
• new: create default construction new function and From implementation.

License

This project is 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.