Struct BStackSliceWriter 

pub struct BStackSliceWriter<'a, A: BStackAllocator> { /* private fields */ }

A cursor-based writer over a BStackSlice.

Implements io::Write and io::Seek within the coordinate space of the slice — position 0 maps to slice.offset in the underlying payload, and writes cannot exceed slice.offset + slice.len.

Every call to write delegates to BStack::set and is durably synced before returning.

Constructed via BStackSlice::writer or BStackSlice::writer_at.

Requires the set feature.

Implementations

impl<'a, A: BStackAllocator> BStackSliceWriter<'a, A>

pub fn position(&self) -> u64

Return the current cursor position within the slice (not the payload).

pub fn slice(&self) -> BStackSlice<'a, A>

Return the underlying BStackSlice.

Trait Implementations

impl<'a, A: BStackAllocator> Clone for BStackSliceWriter<'a, A>

Available on crate feature set only.

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a, A: BStackAllocator> Debug for BStackSliceWriter<'a, A>

Available on crate feature set only.

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

Formats the value using the given formatter.

impl<'a, A: BStackAllocator> From<BStackSlice<'a, A>> for BStackSliceWriter<'a, A>

Available on crate feature set only.

Convert a slice into a writer positioned at the start.

Equivalent to BStackSlice::writer.

fn from(slice: BStackSlice<'a, A>) -> Self

Converts to this type from the input type.

impl<'a, A: BStackAllocator> From<BStackSliceReader<'a, A>> for BStackSliceWriter<'a, A>

Available on crate feature set only.

Convert a reader into a writer at the same position.

The reader and writer share the same underlying slice and cursor position.

fn from(reader: BStackSliceReader<'a, A>) -> Self

Converts to this type from the input type.

impl<'a, A: BStackAllocator> From<BStackSliceWriter<'a, A>> for BStackSlice<'a, A>

Available on crate feature set only.

Convert a writer back into its underlying slice, discarding the cursor.

Equivalent to BStackSliceWriter::slice.

fn from(writer: BStackSliceWriter<'a, A>) -> Self

Converts to this type from the input type.

impl<'a, A: BStackAllocator> From<BStackSliceWriter<'a, A>> for BStackSliceReader<'a, A>

Available on crate feature set only.

Convert a writer into a reader at the same position.

The reader and writer share the same underlying slice and cursor position.

fn from(writer: BStackSliceWriter<'a, A>) -> Self

Converts to this type from the input type.

impl<'a, A: BStackAllocator> Hash for BStackSliceWriter<'a, A>

Available on crate feature set only.

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<'a, A: BStackAllocator> Ord for BStackSliceWriter<'a, A>

Available on crate feature set only.

Writers are ordered by absolute payload position (slice.start() + cursor), then by slice length.

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl<'a, A: BStackAllocator> PartialEq<BStackSlice<'a, A>> for BStackSliceWriter<'a, A>

Available on crate feature set only.

fn eq(&self, other: &BStackSlice<'a, A>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a, A: BStackAllocator> PartialEq<BStackSliceReader<'a, A>> for BStackSliceWriter<'a, A>

Available on crate feature set only.

fn eq(&self, other: &BStackSliceReader<'a, A>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a, A: BStackAllocator> PartialEq<BStackSliceWriter<'a, A>> for BStackSlice<'a, A>

Available on crate feature set only.

fn eq(&self, other: &BStackSliceWriter<'a, A>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a, A: BStackAllocator> PartialEq<BStackSliceWriter<'a, A>> for BStackSliceReader<'a, A>

Available on crate feature set only.

fn eq(&self, other: &BStackSliceWriter<'a, A>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a, A: BStackAllocator> PartialEq for BStackSliceWriter<'a, A>

Available on crate feature set only.

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a, A: BStackAllocator> PartialOrd<BStackSlice<'a, A>> for BStackSliceWriter<'a, A>

Available on crate feature set only.

fn partial_cmp(&self, other: &BStackSlice<'a, A>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<'a, A: BStackAllocator> PartialOrd<BStackSliceReader<'a, A>> for BStackSliceWriter<'a, A>

Available on crate feature set only.

fn partial_cmp(&self, other: &BStackSliceReader<'a, A>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<'a, A: BStackAllocator> PartialOrd<BStackSliceWriter<'a, A>> for BStackSliceReader<'a, A>

Available on crate feature set only.

fn partial_cmp(&self, other: &BStackSliceWriter<'a, A>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<'a, A: BStackAllocator> PartialOrd for BStackSliceWriter<'a, A>

Available on crate feature set only.

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<'a, A: BStackAllocator> Seek for BStackSliceWriter<'a, A>

Available on crate feature set only.

fn seek(&mut self, pos: SeekFrom) -> Result<u64>

Move the cursor within the slice’s coordinate space.

io::SeekFrom::End is relative to self.slice.len. Seeking past the end is allowed; subsequent writes return Ok(0). Seeking before position 0 returns io::ErrorKind::InvalidInput.

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

Rewind to the beginning of a stream.

fn stream_len(&mut self) -> Result<u64, Error>

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

Returns the length of this stream (in bytes).

fn stream_position(&mut self) -> Result<u64, Error>

Returns the current seek position from the start of the stream.

fn seek_relative(&mut self, offset: i64) -> Result<(), Error>

Seeks relative to the current position.

impl<'a, A: BStackAllocator> Write for BStackSliceWriter<'a, A>

Available on crate feature set only.

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

Write bytes at the current cursor position, then advance the cursor.

Writes min(buf.len(), remaining) bytes where remaining is self.slice.len() - self.cursor. Returns Ok(0) when the cursor is at or past the end of the slice. Every call issues a durable sync.

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

No-op: every write is already durably synced.

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

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

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

Attempts to write an entire buffer into this writer.

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.

impl<'a, A: BStackAllocator> Eq for BStackSliceWriter<'a, A>

Available on crate feature set only.