Adding upstream version 110.0.1.upstream/110.0.1upstream

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

1 files changed, 248 insertions, 0 deletions

diff --git a/third_party/rust/tokio-io/src/framed.rs b/third_party/rust/tokio-io/src/framed.rs
new file mode 100644
index 0000000000..aea7b5468c
--- /dev/null
+++ b/third_party/rust/tokio-io/src/framed.rs
@@ -0,0 +1,248 @@
+#![allow(deprecated)]
+
+use std::fmt;
+use std::io::{self, Read, Write};
+
+use codec::{Decoder, Encoder};
+use framed_read::{framed_read2, framed_read2_with_buffer, FramedRead2};
+use framed_write::{framed_write2, framed_write2_with_buffer, FramedWrite2};
+use {AsyncRead, AsyncWrite};
+
+use bytes::BytesMut;
+use futures::{Poll, Sink, StartSend, Stream};
+
+/// A unified `Stream` and `Sink` interface to an underlying I/O object, using
+/// the `Encoder` and `Decoder` traits to encode and decode frames.
+///
+/// You can create a `Framed` instance by using the `AsyncRead::framed` adapter.
+#[deprecated(since = "0.1.7", note = "Moved to tokio-codec")]
+#[doc(hidden)]
+pub struct Framed<T, U> {
+    inner: FramedRead2<FramedWrite2<Fuse<T, U>>>,
+}
+
+#[deprecated(since = "0.1.7", note = "Moved to tokio-codec")]
+#[doc(hidden)]
+pub struct Fuse<T, U>(pub T, pub U);
+
+pub fn framed<T, U>(inner: T, codec: U) -> Framed<T, U>
+where
+    T: AsyncRead + AsyncWrite,
+    U: Decoder + Encoder,
+{
+    Framed {
+        inner: framed_read2(framed_write2(Fuse(inner, codec))),
+    }
+}
+
+impl<T, U> Framed<T, U> {
+    /// Provides a `Stream` and `Sink` interface for reading and writing to this
+    /// `Io` object, using `Decode` and `Encode` to read and write the raw data.
+    ///
+    /// Raw I/O objects work with byte sequences, but higher-level code usually
+    /// wants to batch these into meaningful chunks, called "frames". This
+    /// method layers framing on top of an I/O object, by using the `Codec`
+    /// traits to handle encoding and decoding of messages frames. Note that
+    /// the incoming and outgoing frame types may be distinct.
+    ///
+    /// This function returns a *single* object that is both `Stream` and
+    /// `Sink`; grouping this into a single object is often useful for layering
+    /// things like gzip or TLS, which require both read and write access to the
+    /// underlying object.
+    ///
+    /// This objects takes a stream and a readbuffer and a writebuffer. These field
+    /// can be obtained from an existing `Framed` with the `into_parts` method.
+    ///
+    /// If you want to work more directly with the streams and sink, consider
+    /// calling `split` on the `Framed` returned by this method, which will
+    /// break them into separate objects, allowing them to interact more easily.
+    pub fn from_parts(parts: FramedParts<T>, codec: U) -> Framed<T, U> {
+        Framed {
+            inner: framed_read2_with_buffer(
+                framed_write2_with_buffer(Fuse(parts.inner, codec), parts.writebuf),
+                parts.readbuf,
+            ),
+        }
+    }
+
+    /// Returns a reference to the underlying I/O stream wrapped by
+    /// `Frame`.
+    ///
+    /// Note that care should be taken to not tamper with the underlying stream
+    /// of data coming in as it may corrupt the stream of frames otherwise
+    /// being worked with.
+    pub fn get_ref(&self) -> &T {
+        &self.inner.get_ref().get_ref().0
+    }
+
+    /// Returns a mutable reference to the underlying I/O stream wrapped by
+    /// `Frame`.
+    ///
+    /// Note that care should be taken to not tamper with the underlying stream
+    /// of data coming in as it may corrupt the stream of frames otherwise
+    /// being worked with.
+    pub fn get_mut(&mut self) -> &mut T {
+        &mut self.inner.get_mut().get_mut().0
+    }
+
+    /// Consumes the `Frame`, returning its underlying I/O stream.
+    ///
+    /// Note that care should be taken to not tamper with the underlying stream
+    /// of data coming in as it may corrupt the stream of frames otherwise
+    /// being worked with.
+    pub fn into_inner(self) -> T {
+        self.inner.into_inner().into_inner().0
+    }
+
+    /// Consumes the `Frame`, returning its underlying I/O stream and the buffer
+    /// with unprocessed data.
+    ///
+    /// Note that care should be taken to not tamper with the underlying stream
+    /// of data coming in as it may corrupt the stream of frames otherwise
+    /// being worked with.
+    pub fn into_parts(self) -> FramedParts<T> {
+        let (inner, readbuf) = self.inner.into_parts();
+        let (inner, writebuf) = inner.into_parts();
+        FramedParts {
+            inner: inner.0,
+            readbuf: readbuf,
+            writebuf: writebuf,
+        }
+    }
+
+    /// Consumes the `Frame`, returning its underlying I/O stream and the buffer
+    /// with unprocessed data, and also the current codec state.
+    ///
+    /// Note that care should be taken to not tamper with the underlying stream
+    /// of data coming in as it may corrupt the stream of frames otherwise
+    /// being worked with.
+    ///
+    /// Note that this function will be removed once the codec has been
+    /// integrated into `FramedParts` in a new version (see
+    /// [#53](https://github.com/tokio-rs/tokio-io/pull/53)).
+    pub fn into_parts_and_codec(self) -> (FramedParts<T>, U) {
+        let (inner, readbuf) = self.inner.into_parts();
+        let (inner, writebuf) = inner.into_parts();
+        (
+            FramedParts {
+                inner: inner.0,
+                readbuf: readbuf,
+                writebuf: writebuf,
+            },
+            inner.1,
+        )
+    }
+}
+
+impl<T, U> Stream for Framed<T, U>
+where
+    T: AsyncRead,
+    U: Decoder,
+{
+    type Item = U::Item;
+    type Error = U::Error;
+
+    fn poll(&mut self) -> Poll<Option<Self::Item>, Self::Error> {
+        self.inner.poll()
+    }
+}
+
+impl<T, U> Sink for Framed<T, U>
+where
+    T: AsyncWrite,
+    U: Encoder,
+    U::Error: From<io::Error>,
+{
+    type SinkItem = U::Item;
+    type SinkError = U::Error;
+
+    fn start_send(&mut self, item: Self::SinkItem) -> StartSend<Self::SinkItem, Self::SinkError> {
+        self.inner.get_mut().start_send(item)
+    }
+
+    fn poll_complete(&mut self) -> Poll<(), Self::SinkError> {
+        self.inner.get_mut().poll_complete()
+    }
+
+    fn close(&mut self) -> Poll<(), Self::SinkError> {
+        self.inner.get_mut().close()
+    }
+}
+
+impl<T, U> fmt::Debug for Framed<T, U>
+where
+    T: fmt::Debug,
+    U: fmt::Debug,
+{
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        f.debug_struct("Framed")
+            .field("io", &self.inner.get_ref().get_ref().0)
+            .field("codec", &self.inner.get_ref().get_ref().1)
+            .finish()
+    }
+}
+
+// ===== impl Fuse =====
+
+impl<T: Read, U> Read for Fuse<T, U> {
+    fn read(&mut self, dst: &mut [u8]) -> io::Result<usize> {
+        self.0.read(dst)
+    }
+}
+
+impl<T: AsyncRead, U> AsyncRead for Fuse<T, U> {
+    unsafe fn prepare_uninitialized_buffer(&self, buf: &mut [u8]) -> bool {
+        self.0.prepare_uninitialized_buffer(buf)
+    }
+}
+
+impl<T: Write, U> Write for Fuse<T, U> {
+    fn write(&mut self, src: &[u8]) -> io::Result<usize> {
+        self.0.write(src)
+    }
+
+    fn flush(&mut self) -> io::Result<()> {
+        self.0.flush()
+    }
+}
+
+impl<T: AsyncWrite, U> AsyncWrite for Fuse<T, U> {
+    fn shutdown(&mut self) -> Poll<(), io::Error> {
+        self.0.shutdown()
+    }
+}
+
+impl<T, U: Decoder> Decoder for Fuse<T, U> {
+    type Item = U::Item;
+    type Error = U::Error;
+
+    fn decode(&mut self, buffer: &mut BytesMut) -> Result<Option<Self::Item>, Self::Error> {
+        self.1.decode(buffer)
+    }
+
+    fn decode_eof(&mut self, buffer: &mut BytesMut) -> Result<Option<Self::Item>, Self::Error> {
+        self.1.decode_eof(buffer)
+    }
+}
+
+impl<T, U: Encoder> Encoder for Fuse<T, U> {
+    type Item = U::Item;
+    type Error = U::Error;
+
+    fn encode(&mut self, item: Self::Item, dst: &mut BytesMut) -> Result<(), Self::Error> {
+        self.1.encode(item, dst)
+    }
+}
+
+/// `FramedParts` contains an export of the data of a Framed transport.
+/// It can be used to construct a new `Framed` with a different codec.
+/// It contains all current buffers and the inner transport.
+#[derive(Debug)]
+pub struct FramedParts<T> {
+    /// The inner transport used to read bytes to and write bytes to
+    pub inner: T,
+    /// The buffer with read but unprocessed data.
+    pub readbuf: BytesMut,
+    /// A buffer with unprocessed data which are not written yet.
+    pub writebuf: BytesMut,
+}