| //! [](https://github.com/nvzqz/static-assertions-rs) |
| //! |
| //! <div align="center"> |
| //! <a href="https://crates.io/crates/proc_static_assertions"> |
| //! <img src="https://img.shields.io/crates/d/proc_static_assertions.svg" alt="Downloads"> |
| //! </a> |
| //! <a href="https://travis-ci.org/nvzqz/static-assertions-rs"> |
| //! <img src="https://travis-ci.org/nvzqz/static-assertions-rs.svg?branch=master" alt="Build Status"> |
| //! </a> |
| //! <br><br> |
| //! </div> |
| //! |
| //! Procedural macro [compile-time] assertions as an extension of |
| //! [`static_assertions`]. |
| //! |
| //! # Usage |
| //! |
| //! There's two main ways of using this crate: as a direct dependency or |
| //! indirect dependency (via [`static_assertions`]). |
| //! |
| //! ## Direct Dependency |
| //! |
| //! This crate is available [on crates.io][crate] and can be used by adding the |
| //! following to your project's [`Cargo.toml`]: |
| //! |
| //! ```toml |
| //! [dependencies] |
| //! proc_static_assertions = "0.0.0" |
| //! ``` |
| //! |
| //! and this to your crate root (`main.rs` or `lib.rs`): |
| //! |
| //! ``` |
| //! #[macro_use] |
| //! extern crate proc_static_assertions; |
| //! # fn main() {} |
| //! ``` |
| //! |
| //! ## Indirect Dependency |
| //! |
| //! Add the following to your project's [`Cargo.toml`]: |
| //! |
| //! ```toml |
| //! [dependencies] |
| //! static_assertions = { version = "1.1.0", features = ["proc"] } |
| //! ``` |
| //! |
| //! and this to your crate root (`main.rs` or `lib.rs`): |
| //! |
| //! ```ignore |
| //! #[macro_use] |
| //! extern crate static_assertions; |
| //! ``` |
| //! |
| //! This will also import all macros in `proc_static_assertions`. |
| //! |
| //! # Donate |
| //! |
| //! This project is made freely available (as in free beer), but unfortunately |
| //! not all beer is free! So, if you would like to buy me a beer (or coffee or |
| //! *more*), then consider supporting my work that's benefited your project |
| //! and thousands of others. |
| //! |
| //! <a href="https://www.patreon.com/nvzqz"> |
| //! <img src="https://c5.patreon.com/external/logo/become_a_patron_button.png" alt="Become a Patron!" height="35"> |
| //! </a> |
| //! <a href="https://www.paypal.me/nvzqz"> |
| //! <img src="https://buymecoffee.intm.org/img/button-paypal-white.png" alt="Buy me a coffee" height="35"> |
| //! </a> |
| //! |
| //! [`static_assertions`]: https://github.com/nvzqz/static-assertions-rs |
| //! [crate]: https://crates.io/crates/static_assertions |
| //! [`Cargo.toml`]: https://doc.rust-lang.org/cargo/reference/manifest.html |
| //! [compile-time]: https://en.wikipedia.org/wiki/Compile_time |
| |
| #![doc(html_root_url = "https://docs.rs/proc_static_assertions/0.0.0")] |
| #![doc( |
| html_logo_url = "https://raw.githubusercontent.com/nvzqz/static-assertions-rs/assets/Icon.png" |
| )] |
| #![deny(missing_docs)] |
| |
| extern crate proc_macro; |
| use proc_macro::TokenStream; |
| |
| /// Statically assert aspects of types, traits, and more. |
| /// |
| /// This currently does nothing. Create an issue if you have ideas for what this |
| /// could do! |
| #[proc_macro_attribute] |
| pub fn assert(_attr: TokenStream, _item: TokenStream) -> TokenStream { |
| TokenStream::new() |
| } |
