Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 77 insertions, 0 deletions

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+# pin-project
+
+[![crates-badge]][crates-url]
+[![docs-badge]][docs-url]
+[![license-badge]][license]
+[![rustc-badge]][rustc-url]
+
+[crates-badge]: https://img.shields.io/crates/v/pin-project.svg
+[crates-url]: https://crates.io/crates/pin-project
+[docs-badge]: https://docs.rs/pin-project/badge.svg
+[docs-url]: https://docs.rs/pin-project
+[license-badge]: https://img.shields.io/crates/l/pin-project.svg
+[license]: #license
+[rustc-badge]: https://img.shields.io/badge/rustc-1.33+-lightgray.svg
+[rustc-url]: https://blog.rust-lang.org/2019/02/28/Rust-1.33.0.html
+
+A crate for safe and ergonomic pin-projection.
+
+[Documentation][docs-url]
+
+[Examples](examples/README.md)
+
+## Usage
+
+Add this to your `Cargo.toml`:
+
+```toml
+[dependencies]
+pin-project = "0.4"
+```
+
+The current pin-project requires Rust 1.33 or later.
+
+## Examples
+
+[`pin_project`] attribute creates a projection struct covering all the fields.
+
+```rust
+use pin_project::pin_project;
+use std::pin::Pin;
+
+#[pin_project]
+struct Struct<T, U> {
+    #[pin]
+    pinned: T,
+    unpinned: U,
+}
+
+impl<T, U> Struct<T, U> {
+    fn foo(self: Pin<&mut Self>) {
+        let this = self.project();
+        let _: Pin<&mut T> = this.pinned; // Pinned reference to the field
+        let _: &mut U = this.unpinned; // Normal reference to the field
+    }
+}
+```
+
+[Code like this will be generated](examples/struct-default-expanded.rs)
+
+See [API documentation][docs-url] for more details.
+
+Also, there are examples and generated code of each feature in [examples](examples/README.md) directory.
+
+[`pin_project`]: https://docs.rs/pin-project/0.4/pin_project/attr.pin_project.html
+
+## License
+
+Licensed under either of
+
+* Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or <http://www.apache.org/licenses/LICENSE-2.0>)
+* MIT license ([LICENSE-MIT](LICENSE-MIT) or <http://opensource.org/licenses/MIT>)
+
+at your option.
+
+### Contribution
+
+Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.