Struct UniquePtr

#[repr(C)]
pub struct UniquePtr<T>
where
    T: UniquePtrTarget,
{ /* private fields */ }

Binding to C++ std::unique_ptr<T, std::default_delete<T>>.

Implementations

impl<T> UniquePtr<T>

where T: UniquePtrTarget,

pub fn null() -> UniquePtr<T>

Makes a new UniquePtr wrapping a null pointer.

Matches the behavior of default-constructing a std::unique_ptr.

pub fn new(value: T) -> UniquePtr<T>

where T: ExternType<Kind = Trivial>,

Allocates memory on the heap and makes a UniquePtr pointing to it.

pub fn is_null(&self) -> bool

Checks whether the UniquePtr does not own an object.

This is the opposite of std::unique_ptr<T>::operator bool.

pub fn as_ref(&self) -> Option<&T>

Returns a reference to the object owned by this UniquePtr if any, otherwise None.

pub fn as_mut(&mut self) -> Option<Pin<&mut T>>

Returns a mutable pinned reference to the object owned by this UniquePtr if any, otherwise None.

pub fn pin_mut(&mut self) -> Pin<&mut T>

Returns a mutable pinned reference to the object owned by this UniquePtr.

Panics

Panics if the UniquePtr holds a null pointer.

pub fn into_raw(self) -> *mut T

Consumes the UniquePtr, releasing its ownership of the heap-allocated T.

Matches the behavior of std::unique_ptr<T>::release.

pub unsafe fn from_raw(raw: *mut T) -> UniquePtr<T>

Constructs a UniquePtr retaking ownership of a pointer previously obtained from into_raw.

Safety

This function is unsafe because improper use may lead to memory problems. For example a double-free may occur if the function is called twice on the same raw pointer.

Trait Implementations

impl<T> Debug for UniquePtr<T>

where T: Debug + UniquePtrTarget,

fn fmt(&self, formatter: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<T> Deref for UniquePtr<T>

where T: UniquePtrTarget,

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &<UniquePtr<T> as Deref>::Target

Dereferences the value.

impl<T> DerefMut for UniquePtr<T>

where T: UniquePtrTarget + Unpin,

fn deref_mut(&mut self) -> &mut <UniquePtr<T> as Deref>::Target

Mutably dereferences the value.

impl<T> Display for UniquePtr<T>

where T: Display + UniquePtrTarget,

fn fmt(&self, formatter: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<T> Drop for UniquePtr<T>

where T: UniquePtrTarget,

fn drop(&mut self)

Executes the destructor for this type.

impl<T> Read for UniquePtr<T>

where Pin<&'a mut T>: for<'a> Read, T: UniquePtrTarget,

Forwarding Read trait implementation in a manner similar to Box<T>.

Note that the implementation will panic for null UniquePtr<T>.

fn read(&mut self, buf: &mut [u8]) -> Result<usize, Error>

Pull some bytes from this source into the specified buffer, returning how many bytes were read.

fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize, Error>

Reads all bytes until EOF in this source, placing them into buf.

fn read_to_string(&mut self, buf: &mut String) -> Result<usize, Error>

Reads all bytes until EOF in this source, appending them to buf.

fn read_exact(&mut self, buf: &mut [u8]) -> Result<(), Error>

Reads the exact number of bytes required to fill buf.

fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> Result<usize, Error>

Like read, except that it reads into a slice of buffers.

fn is_read_vectored(&self) -> bool

🔬This is a nightly-only experimental API. (can_vector)

Determines if this Reader has an efficient read_vectored implementation.

fn read_buf(&mut self, buf: BorrowedCursor<'_>) -> Result<(), Error>

🔬This is a nightly-only experimental API. (read_buf)

Pull some bytes from this source into the specified buffer.

fn read_buf_exact(&mut self, cursor: BorrowedCursor<'_>) -> Result<(), Error>

🔬This is a nightly-only experimental API. (read_buf)

Reads the exact number of bytes required to fill cursor.

fn by_ref(&mut self) -> &mut Self

where Self: Sized,

Creates a “by reference” adaptor for this instance of Read.

fn bytes(self) -> Bytes<Self>

where Self: Sized,

Transforms this Read instance to an Iterator over its bytes.

fn chain<R>(self, next: R) -> Chain<Self, R>

where R: Read, Self: Sized,

Creates an adapter which will chain this stream with another.

fn take(self, limit: u64) -> Take<Self>

where Self: Sized,

Creates an adapter which will read at most limit bytes from it.

impl<T> Write for UniquePtr<T>

where Pin<&'a mut T>: for<'a> Write, T: UniquePtrTarget,

Forwarding Write trait implementation in a manner similar to Box<T>.

Note that the implementation will panic for null UniquePtr<T>.

fn write(&mut self, buf: &[u8]) -> Result<usize, Error>

Writes a buffer into this writer, returning how many bytes were written.

fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> Result<usize, Error>

Like write, except that it writes from a slice of buffers.

fn flush(&mut self) -> Result<(), Error>

Flushes this output stream, ensuring that all intermediately buffered contents reach their destination.

fn write_all(&mut self, buf: &[u8]) -> Result<(), Error>

Attempts to write an entire buffer into this writer.

fn write_fmt(&mut self, fmt: Arguments<'_>) -> Result<(), Error>

Writes a formatted string into this writer, returning any error encountered.

fn is_write_vectored(&self) -> bool

🔬This is a nightly-only experimental API. (can_vector)

Determines if this Writer has an efficient write_vectored implementation.

fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<(), Error>

🔬This is a nightly-only experimental API. (write_all_vectored)

Attempts to write multiple buffers into this writer.

fn by_ref(&mut self) -> &mut Self

where Self: Sized,

Creates a “by reference” adapter for this instance of Write.

impl<T> Send for UniquePtr<T>

where T: Send + UniquePtrTarget,

impl<T> Sync for UniquePtr<T>

where T: Sync + UniquePtrTarget,

impl<T> Unpin for UniquePtr<T>

where T: UniquePtrTarget,