Struct PyBytesWriter 

pub struct PyBytesWriter<'py> { /* private fields */ }

Type used to create a PyBytes, used in PyBytes::new_with_writer.

Implementations

impl<'py> PyBytesWriter<'py>

pub fn is_empty(&self) -> bool

Returns true if PyBytesWriter::len is 0.

pub fn len(&self) -> usize

Get the current length of the internal buffer.

pub fn write_bytes(&mut self, bytes: &[u8]) -> PyResult<()>

Writes the bytes into self.

Trait Implementations

impl<'py> Drop for PyBytesWriter<'py>

Available on non-Py_LIMITED_API only.

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

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

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.

impl<'py> IntoPyObject<'py> for PyBytesWriter<'py>

const OUTPUT_TYPE: PyStaticExpr = PyBytes::TYPE_HINT

Extracts the type hint information for this type when it appears as a return value.

type Target = PyBytes

The Python output type

type Output = Bound<'py, PyBytes>

The smart pointer type to use.

type Error = PyErr

The type returned in the event of a conversion error.

fn into_pyobject(self, _py: Python<'py>) -> Result<Self::Output, Self::Error>

Performs the conversion.

impl<'py> TryFrom<PyBytesWriter<'py>> for Bound<'py, PyBytes>

type Error = PyErr

The type returned in the event of a conversion error.

fn try_from(value: PyBytesWriter<'py>) -> Result<Self, Self::Error>

Performs the conversion.

impl Write for PyBytesWriter<'_>

Available on wip_feature_std and non-Py_LIMITED_API only.

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

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

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

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

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

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

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

Attempts to write an entire buffer into this writer.

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

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

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

where Self: Sized,

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