Snap for 6435660 from 7562ee553dc6d81244d764aa6cfd4e682e522025 to sdk-release
Change-Id: I5b204242d994e7782e4a1d8676dc6e08ed68d946
diff --git a/Android.bp b/Android.bp
new file mode 100644
index 0000000..ecde14c
--- /dev/null
+++ b/Android.bp
@@ -0,0 +1,13 @@
+// This file is generated by cargo2android.py.
+
+rust_library_host_rlib {
+ name: "libfutures_sink",
+ crate_name: "futures_sink",
+ srcs: ["src/lib.rs"],
+ edition: "2018",
+ features: [
+ "alloc",
+ "default",
+ "std",
+ ],
+}
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..e470900
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,31 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies
+#
+# If you believe there's an error in this file please file an
+# issue against the rust-lang/cargo repository. If you're
+# editing this file be aware that the upstream Cargo.toml
+# will likely look very different (and much more reasonable)
+
+[package]
+edition = "2018"
+name = "futures-sink"
+version = "0.3.4"
+authors = ["Alex Crichton <alex@alexcrichton.com>"]
+description = "The asynchronous `Sink` trait for the futures-rs library.\n"
+homepage = "https://rust-lang.github.io/futures-rs"
+documentation = "https://docs.rs/futures-sink/0.3.0"
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/rust-lang/futures-rs"
+[package.metadata.docs.rs]
+all-features = true
+
+[dependencies]
+
+[features]
+alloc = []
+default = ["std"]
+std = ["alloc"]
diff --git a/Cargo.toml.orig b/Cargo.toml.orig
new file mode 100644
index 0000000..fadb6b0
--- /dev/null
+++ b/Cargo.toml.orig
@@ -0,0 +1,22 @@
+[package]
+name = "futures-sink"
+edition = "2018"
+version = "0.3.4"
+authors = ["Alex Crichton <alex@alexcrichton.com>"]
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/rust-lang/futures-rs"
+homepage = "https://rust-lang.github.io/futures-rs"
+documentation = "https://docs.rs/futures-sink/0.3.0"
+description = """
+The asynchronous `Sink` trait for the futures-rs library.
+"""
+
+[features]
+default = ["std"]
+std = ["alloc"]
+alloc = []
+
+[dependencies]
+
+[package.metadata.docs.rs]
+all-features = true
diff --git a/LICENSE b/LICENSE
new file mode 120000
index 0000000..6b579aa
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1 @@
+LICENSE-APACHE
\ No newline at end of file
diff --git a/LICENSE-APACHE b/LICENSE-APACHE
new file mode 100644
index 0000000..9eb0b09
--- /dev/null
+++ b/LICENSE-APACHE
@@ -0,0 +1,202 @@
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
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+ (a) You must give any other recipients of the Work or
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+ You may add Your own copyright statement to Your modifications and
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+ for any such Derivative Works as a whole, provided Your use,
+ reproduction, and distribution of the Work otherwise complies with
+ the conditions stated in this License.
+
+5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
+ this License, without any additional terms or conditions.
+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
+ except as required for reasonable and customary use in describing the
+ origin of the Work and reproducing the content of the NOTICE file.
+
+7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
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+ PARTICULAR PURPOSE. You are solely responsible for determining the
+ appropriateness of using or redistributing the Work and assume any
+ risks associated with Your exercise of permissions under this License.
+
+8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
+ unless required by applicable law (such as deliberate and grossly
+ negligent acts) or agreed to in writing, shall any Contributor be
+ liable to You for damages, including any direct, indirect, special,
+ incidental, or consequential damages of any character arising as a
+ result of this License or out of the use or inability to use the
+ Work (including but not limited to damages for loss of goodwill,
+ work stoppage, computer failure or malfunction, or any and all
+ other commercial damages or losses), even if such Contributor
+ has been advised of the possibility of such damages.
+
+9. Accepting Warranty or Additional Liability. While redistributing
+ the Work or Derivative Works thereof, You may choose to offer,
+ and charge a fee for, acceptance of support, warranty, indemnity,
+ or other liability obligations and/or rights consistent with this
+ License. However, in accepting such obligations, You may act only
+ on Your own behalf and on Your sole responsibility, not on behalf
+ of any other Contributor, and only if You agree to indemnify,
+ defend, and hold each Contributor harmless for any liability
+ incurred by, or claims asserted against, such Contributor by reason
+ of your accepting any such warranty or additional liability.
+
+END OF TERMS AND CONDITIONS
+
+APPENDIX: How to apply the Apache License to your work.
+
+ To apply the Apache License to your work, attach the following
+ boilerplate notice, with the fields enclosed by brackets "[]"
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+
+Copyright (c) 2016 Alex Crichton
+Copyright (c) 2017 The Tokio Authors
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
diff --git a/LICENSE-MIT b/LICENSE-MIT
new file mode 100644
index 0000000..8ad082e
--- /dev/null
+++ b/LICENSE-MIT
@@ -0,0 +1,26 @@
+Copyright (c) 2016 Alex Crichton
+Copyright (c) 2017 The Tokio Authors
+
+Permission is hereby granted, free of charge, to any
+person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the
+Software without restriction, including without
+limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software
+is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice
+shall be included in all copies or substantial portions
+of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
+ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
+SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
diff --git a/METADATA b/METADATA
new file mode 100644
index 0000000..9710590
--- /dev/null
+++ b/METADATA
@@ -0,0 +1,17 @@
+name: "futures-sink"
+description:
+ "The asynchronous `Sink` trait for the futures-rs library."
+
+third_party {
+ url {
+ type: HOMEPAGE
+ value: "https://crates.io/crates/futures-sink"
+ }
+ url {
+ type: GIT
+ value: "https://github.com/rust-lang/futures-rs"
+ }
+ version: "0.3.4"
+ last_upgrade_date { year: 2020 month: 3 day: 17 }
+ license_type: NOTICE
+}
diff --git a/MODULE_LICENSE_APACHE2 b/MODULE_LICENSE_APACHE2
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/MODULE_LICENSE_APACHE2
diff --git a/NOTICE b/NOTICE
new file mode 120000
index 0000000..7a694c9
--- /dev/null
+++ b/NOTICE
@@ -0,0 +1 @@
+LICENSE
\ No newline at end of file
diff --git a/OWNERS b/OWNERS
new file mode 100644
index 0000000..46fc303
--- /dev/null
+++ b/OWNERS
@@ -0,0 +1 @@
+include platform/prebuilts/rust:/OWNERS
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..fea98fa
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,229 @@
+//! Asynchronous sinks
+//!
+//! This crate contains the `Sink` trait which allows values to be sent
+//! asynchronously.
+
+#![cfg_attr(not(feature = "std"), no_std)]
+#![warn(missing_docs, missing_debug_implementations, rust_2018_idioms, unreachable_pub)]
+// It cannot be included in the published code because this lints have false positives in the minimum required version.
+#![cfg_attr(test, warn(single_use_lifetimes))]
+#![warn(clippy::all)]
+
+#![doc(test(attr(deny(warnings), allow(dead_code, unused_assignments, unused_variables))))]
+
+#![doc(html_root_url = "https://docs.rs/futures-sink/0.3.0")]
+
+#[cfg(feature = "alloc")]
+extern crate alloc;
+
+use core::ops::DerefMut;
+use core::pin::Pin;
+use core::task::{Context, Poll};
+
+/// A `Sink` is a value into which other values can be sent, asynchronously.
+///
+/// Basic examples of sinks include the sending side of:
+///
+/// - Channels
+/// - Sockets
+/// - Pipes
+///
+/// In addition to such "primitive" sinks, it's typical to layer additional
+/// functionality, such as buffering, on top of an existing sink.
+///
+/// Sending to a sink is "asynchronous" in the sense that the value may not be
+/// sent in its entirety immediately. Instead, values are sent in a two-phase
+/// way: first by initiating a send, and then by polling for completion. This
+/// two-phase setup is analogous to buffered writing in synchronous code, where
+/// writes often succeed immediately, but internally are buffered and are
+/// *actually* written only upon flushing.
+///
+/// In addition, the `Sink` may be *full*, in which case it is not even possible
+/// to start the sending process.
+///
+/// As with `Future` and `Stream`, the `Sink` trait is built from a few core
+/// required methods, and a host of default methods for working in a
+/// higher-level way. The `Sink::send_all` combinator is of particular
+/// importance: you can use it to send an entire stream to a sink, which is
+/// the simplest way to ultimately consume a stream.
+#[must_use = "sinks do nothing unless polled"]
+pub trait Sink<Item> {
+ /// The type of value produced by the sink when an error occurs.
+ type Error;
+
+ /// Attempts to prepare the `Sink` to receive a value.
+ ///
+ /// This method must be called and return `Poll::Ready(Ok(()))` prior to
+ /// each call to `start_send`.
+ ///
+ /// This method returns `Poll::Ready` once the underlying sink is ready to
+ /// receive data. If this method returns `Poll::Pending`, the current task
+ /// is registered to be notified (via `cx.waker().wake_by_ref()`) when `poll_ready`
+ /// should be called again.
+ ///
+ /// In most cases, if the sink encounters an error, the sink will
+ /// permanently be unable to receive items.
+ fn poll_ready(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>>;
+
+ /// Begin the process of sending a value to the sink.
+ /// Each call to this function must be preceded by a successful call to
+ /// `poll_ready` which returned `Poll::Ready(Ok(()))`.
+ ///
+ /// As the name suggests, this method only *begins* the process of sending
+ /// the item. If the sink employs buffering, the item isn't fully processed
+ /// until the buffer is fully flushed. Since sinks are designed to work with
+ /// asynchronous I/O, the process of actually writing out the data to an
+ /// underlying object takes place asynchronously. **You *must* use
+ /// `poll_flush` or `poll_close` in order to guarantee completion of a
+ /// send**.
+ ///
+ /// Implementations of `poll_ready` and `start_send` will usually involve
+ /// flushing behind the scenes in order to make room for new messages.
+ /// It is only necessary to call `poll_flush` if you need to guarantee that
+ /// *all* of the items placed into the `Sink` have been sent.
+ ///
+ /// In most cases, if the sink encounters an error, the sink will
+ /// permanently be unable to receive items.
+ fn start_send(self: Pin<&mut Self>, item: Item) -> Result<(), Self::Error>;
+
+ /// Flush any remaining output from this sink.
+ ///
+ /// Returns `Poll::Ready(Ok(()))` when no buffered items remain. If this
+ /// value is returned then it is guaranteed that all previous values sent
+ /// via `start_send` have been flushed.
+ ///
+ /// Returns `Poll::Pending` if there is more work left to do, in which
+ /// case the current task is scheduled (via `cx.waker().wake_by_ref()`) to wake up when
+ /// `poll_flush` should be called again.
+ ///
+ /// In most cases, if the sink encounters an error, the sink will
+ /// permanently be unable to receive items.
+ fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>>;
+
+ /// Flush any remaining output and close this sink, if necessary.
+ ///
+ /// Returns `Poll::Ready(Ok(()))` when no buffered items remain and the sink
+ /// has been successfully closed.
+ ///
+ /// Returns `Poll::Pending` if there is more work left to do, in which
+ /// case the current task is scheduled (via `cx.waker().wake_by_ref()`) to wake up when
+ /// `poll_close` should be called again.
+ ///
+ /// If this function encounters an error, the sink should be considered to
+ /// have failed permanently, and no more `Sink` methods should be called.
+ fn poll_close(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>>;
+}
+
+impl<S: ?Sized + Sink<Item> + Unpin, Item> Sink<Item> for &mut S {
+ type Error = S::Error;
+
+ fn poll_ready(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
+ Pin::new(&mut **self).poll_ready(cx)
+ }
+
+ fn start_send(mut self: Pin<&mut Self>, item: Item) -> Result<(), Self::Error> {
+ Pin::new(&mut **self).start_send(item)
+ }
+
+ fn poll_flush(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
+ Pin::new(&mut **self).poll_flush(cx)
+ }
+
+ fn poll_close(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
+ Pin::new(&mut **self).poll_close(cx)
+ }
+}
+
+impl<P, Item> Sink<Item> for Pin<P>
+where
+ P: DerefMut + Unpin,
+ P::Target: Sink<Item>,
+{
+ type Error = <P::Target as Sink<Item>>::Error;
+
+ fn poll_ready(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
+ self.get_mut().as_mut().poll_ready(cx)
+ }
+
+ fn start_send(self: Pin<&mut Self>, item: Item) -> Result<(), Self::Error> {
+ self.get_mut().as_mut().start_send(item)
+ }
+
+ fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
+ self.get_mut().as_mut().poll_flush(cx)
+ }
+
+ fn poll_close(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
+ self.get_mut().as_mut().poll_close(cx)
+ }
+}
+
+#[cfg(feature = "alloc")]
+mod if_alloc {
+ use super::*;
+ use core::convert::Infallible as Never;
+
+ impl<T> Sink<T> for alloc::vec::Vec<T> {
+ type Error = Never;
+
+ fn poll_ready(self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
+ Poll::Ready(Ok(()))
+ }
+
+ fn start_send(self: Pin<&mut Self>, item: T) -> Result<(), Self::Error> {
+ // TODO: impl<T> Unpin for Vec<T> {}
+ unsafe { self.get_unchecked_mut() }.push(item);
+ Ok(())
+ }
+
+ fn poll_flush(self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
+ Poll::Ready(Ok(()))
+ }
+
+ fn poll_close(self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
+ Poll::Ready(Ok(()))
+ }
+ }
+
+ impl<T> Sink<T> for alloc::collections::VecDeque<T> {
+ type Error = Never;
+
+ fn poll_ready(self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
+ Poll::Ready(Ok(()))
+ }
+
+ fn start_send(self: Pin<&mut Self>, item: T) -> Result<(), Self::Error> {
+ // TODO: impl<T> Unpin for Vec<T> {}
+ unsafe { self.get_unchecked_mut() }.push_back(item);
+ Ok(())
+ }
+
+ fn poll_flush(self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
+ Poll::Ready(Ok(()))
+ }
+
+ fn poll_close(self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
+ Poll::Ready(Ok(()))
+ }
+ }
+
+ impl<S: ?Sized + Sink<Item> + Unpin, Item> Sink<Item> for alloc::boxed::Box<S> {
+ type Error = S::Error;
+
+ fn poll_ready(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
+ Pin::new(&mut **self).poll_ready(cx)
+ }
+
+ fn start_send(mut self: Pin<&mut Self>, item: Item) -> Result<(), Self::Error> {
+ Pin::new(&mut **self).start_send(item)
+ }
+
+ fn poll_flush(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
+ Pin::new(&mut **self).poll_flush(cx)
+ }
+
+ fn poll_close(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
+ Pin::new(&mut **self).poll_close(cx)
+ }
+ }
+}
