Adding upstream version 86.0.1.upstream/86.0.1upstream

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

1 files changed, 105 insertions, 0 deletions

diff --git a/third_party/rust/pin-project-lite/README.md b/third_party/rust/pin-project-lite/README.md
new file mode 100644
index 0000000000..0bc7bffb78
--- /dev/null
+++ b/third_party/rust/pin-project-lite/README.md
@@ -0,0 +1,105 @@
+# pin-project-lite
+
+[![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-lite.svg
+[crates-url]: https://crates.io/crates/pin-project-lite
+[docs-badge]: https://docs.rs/pin-project-lite/badge.svg
+[docs-url]: https://docs.rs/pin-project-lite
+[license-badge]: https://img.shields.io/crates/l/pin-project-lite.svg
+[license]: #license
+[rustc-badge]: https://img.shields.io/badge/rustc-1.37+-lightgray.svg
+[rustc-url]: https://blog.rust-lang.org/2019/08/15/Rust-1.37.0.html
+
+A lightweight version of [pin-project] written with declarative macros.
+
+## Usage
+
+Add this to your `Cargo.toml`:
+
+```toml
+[dependencies]
+pin-project-lite = "0.1"
+```
+
+The current pin-project-lite requires Rust 1.37 or later.
+
+## Examples
+
+```rust
+use pin_project_lite::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
+    }
+}
+```
+
+## [pin-project] vs pin-project-lite
+
+Here are some similarities and differences compared to [pin-project].
+
+### Similar: Safety
+
+pin-project-lite guarantees safety in much the same way as [pin-project]. Both are completely safe unless you write other unsafe code.
+
+### Different: Minimal design
+
+This library does not tackle as expansive of a range of use cases as [pin-project] does. If your use case is not already covered, please use [pin-project].
+
+### Different: No proc-macro related dependencies
+
+This is the **only** reason to use this crate. However, **if you already have proc-macro related dependencies in your crate's dependency graph, there is no benefit from using this crate.** (Note: There is almost no difference in the amount of code generated between [pin-project] and pin-project-lite.)
+
+### Different: No useful error messages
+
+This macro does not handle any invalid input. So error messages are not to be useful in most cases. If you do need useful error messages, then upon error you can pass the same input to [pin-project] to receive a helpful description of the compile error.
+
+### Different: Structs only
+
+pin-project-lite will refuse anything other than a braced struct with named fields. Enums and tuple structs are not supported.
+
+### Different: No support for custom Drop implementation
+
+[pin-project supports this.][pinned-drop]
+
+### Different: No support for custom Unpin implementation
+
+[pin-project supports this.][unsafe-unpin]
+
+### Different: No support for pattern matching and destructing
+
+[pin-project supports this.][projection-helper]
+
+[pin-project]: https://github.com/taiki-e/pin-project
+[pinned-drop]: https://docs.rs/pin-project/0.4/pin_project/attr.pin_project.html#pinned_drop
+[unsafe-unpin]: https://docs.rs/pin-project/0.4/pin_project/trait.UnsafeUnpin.html
+[projection-helper]: https://docs.rs/pin-project/0.4/pin_project/attr.project.html#let-bindings
+
+## 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.