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| author | Markus Wein <markus.wein@nuclearsquid.com> | 2018-07-11 13:32:03 +0200 |
|---|---|---|
| committer | Markus Wein <markus.wein@nuclearsquid.com> | 2018-07-16 20:37:28 +0200 |
| commit | b81ee0b370ebc1a9e15a5c6a68b2201ddbdaa36f (patch) | |
| tree | b53c2cbefb15c9b95b2c52658f7f319862ff272e /src/libstd | |
| parent | acdafa0fb13a8d1e1e76ce4bf4725104a0b749cb (diff) | |
| download | rust-b81ee0b370ebc1a9e15a5c6a68b2201ddbdaa36f.tar.gz rust-b81ee0b370ebc1a9e15a5c6a68b2201ddbdaa36f.zip | |
Document From conversions for CString and CStr
Diffstat (limited to 'src/libstd')
| -rw-r--r-- | src/libstd/ffi/c_str.rs | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/libstd/ffi/c_str.rs b/src/libstd/ffi/c_str.rs index b816f4b7850..14ace795819 100644 --- a/src/libstd/ffi/c_str.rs +++ b/src/libstd/ffi/c_str.rs @@ -642,6 +642,11 @@ impl fmt::Debug for CString { #[stable(feature = "cstring_into", since = "1.7.0")] impl From<CString> for Vec<u8> { + /// Converts a [`CString`] into a [`Vec`]`<u8>`. + /// The conversion consumes the [`CString`], and removes the terminating NUL byte. + /// + /// [`Vec`]: ../vec/struct.Vec.html + /// [`CString`]: ../ffi/struct.CString.html #[inline] fn from(s: CString) -> Vec<u8> { s.into_bytes() @@ -700,6 +705,10 @@ impl<'a> From<&'a CStr> for Box<CStr> { #[stable(feature = "c_string_from_box", since = "1.18.0")] impl From<Box<CStr>> for CString { + /// Converts a [`Box`]`<CStr>` into a [`CString`] without copying or allocating. + /// + /// [`Box`]: ../boxed/struct.Box.html + /// [`CString`]: ../ffi/struct.CString.html #[inline] fn from(s: Box<CStr>) -> CString { s.into_c_string() @@ -716,6 +725,10 @@ impl Clone for Box<CStr> { #[stable(feature = "box_from_c_string", since = "1.20.0")] impl From<CString> for Box<CStr> { + /// Converts a [`CString`] into a [`Box`]`<CStr>` without copying or allocating. + /// + /// [`CString`]: ../ffi/struct.CString.html + /// [`Box`]: ../boxed/struct.Box.html #[inline] fn from(s: CString) -> Box<CStr> { s.into_boxed_c_str() @@ -748,6 +761,10 @@ impl<'a> From<&'a CString> for Cow<'a, CStr> { #[stable(feature = "shared_from_slice2", since = "1.24.0")] impl From<CString> for Arc<CStr> { + /// Converts a [`CString`] into a [`Arc`]`<CStr>` without copying or allocating. + /// + /// [`CString`]: ../ffi/struct.CString.html + /// [`Arc`]: ../sync/struct.Arc.html #[inline] fn from(s: CString) -> Arc<CStr> { let arc: Arc<[u8]> = Arc::from(s.into_inner()); @@ -766,6 +783,10 @@ impl<'a> From<&'a CStr> for Arc<CStr> { #[stable(feature = "shared_from_slice2", since = "1.24.0")] impl From<CString> for Rc<CStr> { + /// Converts a [`CString`] into a [`Rc`]`<CStr>` without copying or allocating. + /// + /// [`CString`]: ../ffi/struct.CString.html + /// [`Rc`]: ../rc/struct.Rc.html #[inline] fn from(s: CString) -> Rc<CStr> { let rc: Rc<[u8]> = Rc::from(s.into_inner()); @@ -839,6 +860,10 @@ impl fmt::Display for NulError { #[stable(feature = "rust1", since = "1.0.0")] impl From<NulError> for io::Error { + /// Converts a [`NulError`] into a [`io::Error`]. + /// + /// [`NulError`]: ../ffi/struct.NulError.html + /// [`io::Error`]: ../io/struct.Error.html fn from(_: NulError) -> io::Error { io::Error::new(io::ErrorKind::InvalidInput, "data provided contains a nul byte") |