third_party/rust_crates/vendor/static_assertions/README.md

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Rust compile-time assertions to ensure that invariants are met.

[Documentation](https://docs.rs/static_assertions/)

## Installation

This crate is available
[on crates.io](https://crates.io/crates/static_assertions) and can be used by
adding the following to your project's
[`Cargo.toml`](https://doc.rust-lang.org/cargo/reference/manifest.html):

```toml
[dependencies]
static_assertions = "0.3.1"
```

and this to your crate root (`main.rs` or `lib.rs`):

```rust
#[macro_use]
extern crate static_assertions;
```

## Usage

This crate exposes the following macros:
- [`assert_cfg!`](https://docs.rs/static_assertions/0.3.1/static_assertions/macro.assert_cfg.html)
- [`assert_eq_size!`](https://docs.rs/static_assertions/0.3.1/static_assertions/macro.assert_eq_size.html)
- [`assert_eq_size_ptr!`](https://docs.rs/static_assertions/0.3.1/static_assertions/macro.assert_eq_size_ptr.html)
- [`assert_eq_size_val!`](https://docs.rs/static_assertions/0.3.1/static_assertions/macro.assert_eq_size_val.html)
- [`assert_fields!`](https://docs.rs/static_assertions/0.3.1/static_assertions/macro.assert_fields.html)
- [`assert_impl!`](https://docs.rs/static_assertions/0.3.1/static_assertions/macro.assert_impl.html)
- [`assert_obj_safe!`](https://docs.rs/static_assertions/0.3.1/static_assertions/macro.assert_obj_safe.html)
- [`const_assert!`](https://docs.rs/static_assertions/0.3.1/static_assertions/macro.const_assert.html)
- [`const_assert_eq!`](https://docs.rs/static_assertions/0.3.1/static_assertions/macro.const_assert_eq.html)

### Limitations

See [issue #1](https://github.com/nvzqz/static-assertions-rs/issues/1) to read
up on current limitations of this crate and how to currently overcome them.

## Changes

See [`CHANGELOG.md`](https://github.com/nvzqz/static-assertions-rs/blob/master/CHANGELOG.md)
for a complete list of what has changed from one version to another.

## License

This project is released under either:

- [MIT License](https://github.com/nvzqz/static-assertions-rs/blob/master/LICENSE-MIT)

- [Apache License (Version 2.0)](https://github.com/nvzqz/static-assertions-rs/blob/master/LICENSE-APACHE)

at your choosing.