Struct RawTapeView 

pub struct RawTapeView<'a, Offset: OffsetType> { /* private fields */ }

Zero-copy read-only view into a RawTape slice.

Implementations

impl<'a, Offset: OffsetType> RawTapeView<'a, Offset>

pub unsafe fn from_raw_parts(data: &'a [u8], offsets: &'a [Offset]) -> Self

Creates a zero-copy view from raw Arrow-compatible parts.

Safety

The caller must ensure that:

• data contains valid bytes for the lifetime 'a
• offsets contains valid offsets with length items_count + 1
• All offsets are within bounds of the data slice
• For CharsTapeView, data must be valid UTF-8

pub fn get(&self, index: usize) -> Option<&[u8]>

Returns a reference to the bytes at the given index within this view.

pub fn len(&self) -> usize

Returns the number of items in this view.

pub fn is_empty(&self) -> bool

Returns true if the view contains no items.

pub fn data_len(&self) -> usize

Returns the total number of bytes in this view.

pub fn subview( &self, start: usize, end: usize, ) -> Result<RawTapeView<'a, Offset>, StringTapeError>

Creates a sub-view of this view

pub fn as_raw_parts(&self) -> RawParts<Offset>

Returns the raw parts of the view for Apache Arrow compatibility.

Trait Implementations

impl<'a, Offset: OffsetType> Index<Range<usize>> for RawTapeView<'a, Offset>

type Output = [u8]

The returned type after indexing.

fn index(&self, range: Range<usize>) -> &Self::Output

Performs the indexing (container[index]) operation.

impl<'a, Offset: OffsetType> Index<RangeFrom<usize>> for RawTapeView<'a, Offset>

type Output = [u8]

The returned type after indexing.

fn index(&self, range: RangeFrom<usize>) -> &Self::Output

Performs the indexing (container[index]) operation.

impl<'a, Offset: OffsetType> Index<RangeFull> for RawTapeView<'a, Offset>

type Output = [u8]

The returned type after indexing.

fn index(&self, _range: RangeFull) -> &Self::Output

Performs the indexing (container[index]) operation.

impl<'a, Offset: OffsetType> Index<RangeInclusive<usize>> for RawTapeView<'a, Offset>

type Output = [u8]

The returned type after indexing.

fn index(&self, range: RangeInclusive<usize>) -> &Self::Output

Performs the indexing (container[index]) operation.

impl<'a, Offset: OffsetType> Index<RangeTo<usize>> for RawTapeView<'a, Offset>

type Output = [u8]

The returned type after indexing.

fn index(&self, range: RangeTo<usize>) -> &Self::Output

Performs the indexing (container[index]) operation.

impl<'a, Offset: OffsetType> Index<RangeToInclusive<usize>> for RawTapeView<'a, Offset>

type Output = [u8]

The returned type after indexing.

fn index(&self, range: RangeToInclusive<usize>) -> &Self::Output

Performs the indexing (container[index]) operation.

impl<'a, Offset: OffsetType> Index<usize> for RawTapeView<'a, Offset>

type Output = [u8]

The returned type after indexing.

fn index(&self, index: usize) -> &Self::Output

Performs the indexing (container[index]) operation.