diff options
Diffstat (limited to 'library/std/src/fs.rs')
-rw-r--r-- | library/std/src/fs.rs | 100 |
1 files changed, 68 insertions, 32 deletions
diff --git a/library/std/src/fs.rs b/library/std/src/fs.rs index c2d82169d..4094e3780 100644 --- a/library/std/src/fs.rs +++ b/library/std/src/fs.rs @@ -16,6 +16,7 @@ use crate::fmt; use crate::io::{self, BorrowedCursor, IoSlice, IoSliceMut, Read, Seek, SeekFrom, Write}; use crate::path::{Path, PathBuf}; use crate::sealed::Sealed; +use crate::sync::Arc; use crate::sys::fs as fs_imp; use crate::sys_common::{AsInner, AsInnerMut, FromInner, IntoInner}; use crate::time::SystemTime; @@ -743,7 +744,7 @@ fn buffer_capacity_required(mut file: &File) -> Option<usize> { } #[stable(feature = "rust1", since = "1.0.0")] -impl Read for File { +impl Read for &File { fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> { self.inner.read(buf) } @@ -776,7 +777,7 @@ impl Read for File { } } #[stable(feature = "rust1", since = "1.0.0")] -impl Write for File { +impl Write for &File { fn write(&mut self, buf: &[u8]) -> io::Result<usize> { self.inner.write(buf) } @@ -790,72 +791,107 @@ impl Write for File { self.inner.is_write_vectored() } + #[inline] fn flush(&mut self) -> io::Result<()> { self.inner.flush() } } #[stable(feature = "rust1", since = "1.0.0")] -impl Seek for File { +impl Seek for &File { fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> { self.inner.seek(pos) } } + #[stable(feature = "rust1", since = "1.0.0")] -impl Read for &File { +impl Read for File { fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> { - self.inner.read(buf) + (&*self).read(buf) + } + fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> io::Result<usize> { + (&*self).read_vectored(bufs) } - fn read_buf(&mut self, cursor: BorrowedCursor<'_>) -> io::Result<()> { - self.inner.read_buf(cursor) + (&*self).read_buf(cursor) + } + #[inline] + fn is_read_vectored(&self) -> bool { + (&&*self).is_read_vectored() } + fn read_to_end(&mut self, buf: &mut Vec<u8>) -> io::Result<usize> { + (&*self).read_to_end(buf) + } + fn read_to_string(&mut self, buf: &mut String) -> io::Result<usize> { + (&*self).read_to_string(buf) + } +} +#[stable(feature = "rust1", since = "1.0.0")] +impl Write for File { + fn write(&mut self, buf: &[u8]) -> io::Result<usize> { + (&*self).write(buf) + } + 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() + } +} +#[stable(feature = "rust1", since = "1.0.0")] +impl Seek for File { + fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> { + (&*self).seek(pos) + } +} +#[stable(feature = "io_traits_arc", since = "1.73.0")] +impl Read for Arc<File> { + fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> { + (&**self).read(buf) + } fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> io::Result<usize> { - self.inner.read_vectored(bufs) + (&**self).read_vectored(bufs) + } + fn read_buf(&mut self, cursor: BorrowedCursor<'_>) -> io::Result<()> { + (&**self).read_buf(cursor) } - #[inline] fn is_read_vectored(&self) -> bool { - self.inner.is_read_vectored() + (&**self).is_read_vectored() } - - // Reserves space in the buffer based on the file size when available. fn read_to_end(&mut self, buf: &mut Vec<u8>) -> io::Result<usize> { - let size = buffer_capacity_required(self); - buf.reserve(size.unwrap_or(0)); - io::default_read_to_end(self, buf, size) + (&**self).read_to_end(buf) } - - // Reserves space in the buffer based on the file size when available. fn read_to_string(&mut self, buf: &mut String) -> io::Result<usize> { - let size = buffer_capacity_required(self); - buf.reserve(size.unwrap_or(0)); - io::default_read_to_string(self, buf, size) + (&**self).read_to_string(buf) } } -#[stable(feature = "rust1", since = "1.0.0")] -impl Write for &File { +#[stable(feature = "io_traits_arc", since = "1.73.0")] +impl Write for Arc<File> { fn write(&mut self, buf: &[u8]) -> io::Result<usize> { - self.inner.write(buf) + (&**self).write(buf) } - fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> io::Result<usize> { - self.inner.write_vectored(bufs) + (&**self).write_vectored(bufs) } - #[inline] fn is_write_vectored(&self) -> bool { - self.inner.is_write_vectored() + (&**self).is_write_vectored() } - + #[inline] fn flush(&mut self) -> io::Result<()> { - self.inner.flush() + (&**self).flush() } } -#[stable(feature = "rust1", since = "1.0.0")] -impl Seek for &File { +#[stable(feature = "io_traits_arc", since = "1.73.0")] +impl Seek for Arc<File> { fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> { - self.inner.seek(pos) + (&**self).seek(pos) } } |