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-rw-r--r--src/libstd/io/impls.rs460
1 files changed, 0 insertions, 460 deletions
diff --git a/src/libstd/io/impls.rs b/src/libstd/io/impls.rs
deleted file mode 100644
index 01dff0b3eb3..00000000000
--- a/src/libstd/io/impls.rs
+++ /dev/null
@@ -1,460 +0,0 @@
-use crate::cmp;
-use crate::fmt;
-use crate::io::{
-    self, BufRead, Error, ErrorKind, Initializer, IoSlice, IoSliceMut, Read, Seek, SeekFrom, Write,
-};
-use crate::mem;
-
-// =============================================================================
-// Forwarding implementations
-
-#[stable(feature = "rust1", since = "1.0.0")]
-impl<R: Read + ?Sized> Read for &mut R {
-    #[inline]
-    fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
-        (**self).read(buf)
-    }
-
-    #[inline]
-    fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> io::Result<usize> {
-        (**self).read_vectored(bufs)
-    }
-
-    #[inline]
-    fn is_read_vectored(&self) -> bool {
-        (**self).is_read_vectored()
-    }
-
-    #[inline]
-    unsafe fn initializer(&self) -> Initializer {
-        (**self).initializer()
-    }
-
-    #[inline]
-    fn read_to_end(&mut self, buf: &mut Vec<u8>) -> io::Result<usize> {
-        (**self).read_to_end(buf)
-    }
-
-    #[inline]
-    fn read_to_string(&mut self, buf: &mut String) -> io::Result<usize> {
-        (**self).read_to_string(buf)
-    }
-
-    #[inline]
-    fn read_exact(&mut self, buf: &mut [u8]) -> io::Result<()> {
-        (**self).read_exact(buf)
-    }
-}
-#[stable(feature = "rust1", since = "1.0.0")]
-impl<W: Write + ?Sized> Write for &mut W {
-    #[inline]
-    fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
-        (**self).write(buf)
-    }
-
-    #[inline]
-    fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> io::Result<usize> {
-        (**self).write_vectored(bufs)
-    }
-
-    #[inline]
-    fn is_write_vectored(&self) -> bool {
-        (**self).is_write_vectored()
-    }
-
-    #[inline]
-    fn flush(&mut self) -> io::Result<()> {
-        (**self).flush()
-    }
-
-    #[inline]
-    fn write_all(&mut self, buf: &[u8]) -> io::Result<()> {
-        (**self).write_all(buf)
-    }
-
-    #[inline]
-    fn write_fmt(&mut self, fmt: fmt::Arguments<'_>) -> io::Result<()> {
-        (**self).write_fmt(fmt)
-    }
-}
-#[stable(feature = "rust1", since = "1.0.0")]
-impl<S: Seek + ?Sized> Seek for &mut S {
-    #[inline]
-    fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> {
-        (**self).seek(pos)
-    }
-}
-#[stable(feature = "rust1", since = "1.0.0")]
-impl<B: BufRead + ?Sized> BufRead for &mut B {
-    #[inline]
-    fn fill_buf(&mut self) -> io::Result<&[u8]> {
-        (**self).fill_buf()
-    }
-
-    #[inline]
-    fn consume(&mut self, amt: usize) {
-        (**self).consume(amt)
-    }
-
-    #[inline]
-    fn read_until(&mut self, byte: u8, buf: &mut Vec<u8>) -> io::Result<usize> {
-        (**self).read_until(byte, buf)
-    }
-
-    #[inline]
-    fn read_line(&mut self, buf: &mut String) -> io::Result<usize> {
-        (**self).read_line(buf)
-    }
-}
-
-#[stable(feature = "rust1", since = "1.0.0")]
-impl<R: Read + ?Sized> Read for Box<R> {
-    #[inline]
-    fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
-        (**self).read(buf)
-    }
-
-    #[inline]
-    fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> io::Result<usize> {
-        (**self).read_vectored(bufs)
-    }
-
-    #[inline]
-    fn is_read_vectored(&self) -> bool {
-        (**self).is_read_vectored()
-    }
-
-    #[inline]
-    unsafe fn initializer(&self) -> Initializer {
-        (**self).initializer()
-    }
-
-    #[inline]
-    fn read_to_end(&mut self, buf: &mut Vec<u8>) -> io::Result<usize> {
-        (**self).read_to_end(buf)
-    }
-
-    #[inline]
-    fn read_to_string(&mut self, buf: &mut String) -> io::Result<usize> {
-        (**self).read_to_string(buf)
-    }
-
-    #[inline]
-    fn read_exact(&mut self, buf: &mut [u8]) -> io::Result<()> {
-        (**self).read_exact(buf)
-    }
-}
-#[stable(feature = "rust1", since = "1.0.0")]
-impl<W: Write + ?Sized> Write for Box<W> {
-    #[inline]
-    fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
-        (**self).write(buf)
-    }
-
-    #[inline]
-    fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> io::Result<usize> {
-        (**self).write_vectored(bufs)
-    }
-
-    #[inline]
-    fn is_write_vectored(&self) -> bool {
-        (**self).is_write_vectored()
-    }
-
-    #[inline]
-    fn flush(&mut self) -> io::Result<()> {
-        (**self).flush()
-    }
-
-    #[inline]
-    fn write_all(&mut self, buf: &[u8]) -> io::Result<()> {
-        (**self).write_all(buf)
-    }
-
-    #[inline]
-    fn write_fmt(&mut self, fmt: fmt::Arguments<'_>) -> io::Result<()> {
-        (**self).write_fmt(fmt)
-    }
-}
-#[stable(feature = "rust1", since = "1.0.0")]
-impl<S: Seek + ?Sized> Seek for Box<S> {
-    #[inline]
-    fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> {
-        (**self).seek(pos)
-    }
-}
-#[stable(feature = "rust1", since = "1.0.0")]
-impl<B: BufRead + ?Sized> BufRead for Box<B> {
-    #[inline]
-    fn fill_buf(&mut self) -> io::Result<&[u8]> {
-        (**self).fill_buf()
-    }
-
-    #[inline]
-    fn consume(&mut self, amt: usize) {
-        (**self).consume(amt)
-    }
-
-    #[inline]
-    fn read_until(&mut self, byte: u8, buf: &mut Vec<u8>) -> io::Result<usize> {
-        (**self).read_until(byte, buf)
-    }
-
-    #[inline]
-    fn read_line(&mut self, buf: &mut String) -> io::Result<usize> {
-        (**self).read_line(buf)
-    }
-}
-
-// Used by panicking::default_hook
-#[cfg(test)]
-/// This impl is only used by printing logic, so any error returned is always
-/// of kind `Other`, and should be ignored.
-impl Write for Box<dyn (::realstd::io::Write) + Send> {
-    fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
-        (**self).write(buf).map_err(|_| ErrorKind::Other.into())
-    }
-
-    fn flush(&mut self) -> io::Result<()> {
-        (**self).flush().map_err(|_| ErrorKind::Other.into())
-    }
-}
-
-// =============================================================================
-// In-memory buffer implementations
-
-/// Read is implemented for `&[u8]` by copying from the slice.
-///
-/// Note that reading updates the slice to point to the yet unread part.
-/// The slice will be empty when EOF is reached.
-#[stable(feature = "rust1", since = "1.0.0")]
-impl Read for &[u8] {
-    #[inline]
-    fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
-        let amt = cmp::min(buf.len(), self.len());
-        let (a, b) = self.split_at(amt);
-
-        // First check if the amount of bytes we want to read is small:
-        // `copy_from_slice` will generally expand to a call to `memcpy`, and
-        // for a single byte the overhead is significant.
-        if amt == 1 {
-            buf[0] = a[0];
-        } else {
-            buf[..amt].copy_from_slice(a);
-        }
-
-        *self = b;
-        Ok(amt)
-    }
-
-    #[inline]
-    fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> io::Result<usize> {
-        let mut nread = 0;
-        for buf in bufs {
-            nread += self.read(buf)?;
-            if self.is_empty() {
-                break;
-            }
-        }
-
-        Ok(nread)
-    }
-
-    #[inline]
-    fn is_read_vectored(&self) -> bool {
-        true
-    }
-
-    #[inline]
-    unsafe fn initializer(&self) -> Initializer {
-        Initializer::nop()
-    }
-
-    #[inline]
-    fn read_exact(&mut self, buf: &mut [u8]) -> io::Result<()> {
-        if buf.len() > self.len() {
-            return Err(Error::new(ErrorKind::UnexpectedEof, "failed to fill whole buffer"));
-        }
-        let (a, b) = self.split_at(buf.len());
-
-        // First check if the amount of bytes we want to read is small:
-        // `copy_from_slice` will generally expand to a call to `memcpy`, and
-        // for a single byte the overhead is significant.
-        if buf.len() == 1 {
-            buf[0] = a[0];
-        } else {
-            buf.copy_from_slice(a);
-        }
-
-        *self = b;
-        Ok(())
-    }
-
-    #[inline]
-    fn read_to_end(&mut self, buf: &mut Vec<u8>) -> io::Result<usize> {
-        buf.extend_from_slice(*self);
-        let len = self.len();
-        *self = &self[len..];
-        Ok(len)
-    }
-}
-
-#[stable(feature = "rust1", since = "1.0.0")]
-impl BufRead for &[u8] {
-    #[inline]
-    fn fill_buf(&mut self) -> io::Result<&[u8]> {
-        Ok(*self)
-    }
-
-    #[inline]
-    fn consume(&mut self, amt: usize) {
-        *self = &self[amt..];
-    }
-}
-
-/// Write is implemented for `&mut [u8]` by copying into the slice, overwriting
-/// its data.
-///
-/// Note that writing updates the slice to point to the yet unwritten part.
-/// The slice will be empty when it has been completely overwritten.
-#[stable(feature = "rust1", since = "1.0.0")]
-impl Write for &mut [u8] {
-    #[inline]
-    fn write(&mut self, data: &[u8]) -> io::Result<usize> {
-        let amt = cmp::min(data.len(), self.len());
-        let (a, b) = mem::replace(self, &mut []).split_at_mut(amt);
-        a.copy_from_slice(&data[..amt]);
-        *self = b;
-        Ok(amt)
-    }
-
-    #[inline]
-    fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> io::Result<usize> {
-        let mut nwritten = 0;
-        for buf in bufs {
-            nwritten += self.write(buf)?;
-            if self.is_empty() {
-                break;
-            }
-        }
-
-        Ok(nwritten)
-    }
-
-    #[inline]
-    fn is_write_vectored(&self) -> bool {
-        true
-    }
-
-    #[inline]
-    fn write_all(&mut self, data: &[u8]) -> io::Result<()> {
-        if self.write(data)? == data.len() {
-            Ok(())
-        } else {
-            Err(Error::new(ErrorKind::WriteZero, "failed to write whole buffer"))
-        }
-    }
-
-    #[inline]
-    fn flush(&mut self) -> io::Result<()> {
-        Ok(())
-    }
-}
-
-/// Write is implemented for `Vec<u8>` by appending to the vector.
-/// The vector will grow as needed.
-#[stable(feature = "rust1", since = "1.0.0")]
-impl Write for Vec<u8> {
-    #[inline]
-    fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
-        self.extend_from_slice(buf);
-        Ok(buf.len())
-    }
-
-    #[inline]
-    fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> io::Result<usize> {
-        let len = bufs.iter().map(|b| b.len()).sum();
-        self.reserve(len);
-        for buf in bufs {
-            self.extend_from_slice(buf);
-        }
-        Ok(len)
-    }
-
-    #[inline]
-    fn is_write_vectored(&self) -> bool {
-        true
-    }
-
-    #[inline]
-    fn write_all(&mut self, buf: &[u8]) -> io::Result<()> {
-        self.extend_from_slice(buf);
-        Ok(())
-    }
-
-    #[inline]
-    fn flush(&mut self) -> io::Result<()> {
-        Ok(())
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use crate::io::prelude::*;
-
-    #[bench]
-    fn bench_read_slice(b: &mut test::Bencher) {
-        let buf = [5; 1024];
-        let mut dst = [0; 128];
-
-        b.iter(|| {
-            let mut rd = &buf[..];
-            for _ in 0..8 {
-                let _ = rd.read(&mut dst);
-                test::black_box(&dst);
-            }
-        })
-    }
-
-    #[bench]
-    fn bench_write_slice(b: &mut test::Bencher) {
-        let mut buf = [0; 1024];
-        let src = [5; 128];
-
-        b.iter(|| {
-            let mut wr = &mut buf[..];
-            for _ in 0..8 {
-                let _ = wr.write_all(&src);
-                test::black_box(&wr);
-            }
-        })
-    }
-
-    #[bench]
-    fn bench_read_vec(b: &mut test::Bencher) {
-        let buf = vec![5; 1024];
-        let mut dst = [0; 128];
-
-        b.iter(|| {
-            let mut rd = &buf[..];
-            for _ in 0..8 {
-                let _ = rd.read(&mut dst);
-                test::black_box(&dst);
-            }
-        })
-    }
-
-    #[bench]
-    fn bench_write_vec(b: &mut test::Bencher) {
-        let mut buf = Vec::with_capacity(1024);
-        let src = [5; 128];
-
-        b.iter(|| {
-            let mut wr = &mut buf[..];
-            for _ in 0..8 {
-                let _ = wr.write_all(&src);
-                test::black_box(&wr);
-            }
-        })
-    }
-}
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