Struct differential_dataflow::trace::implementations::OffsetList

pub struct OffsetList {
    pub zero_prefix: usize,
    pub smol: Vec<u32>,
    pub chonk: Vec<u64>,
}

A list of unsigned integers that uses u32 elements as long as they are small enough, and switches to u64 once they are not.

Fields

zero_prefix: usize

Length of a prefix of zero elements.

smol: Vec<u32>

Offsets that fit within a u32.

chonk: Vec<u64>

Offsets that either do not fit in a u32, or are inserted after some offset that did not fit.

Implementations

impl OffsetList

pub fn with_capacity(cap: usize) -> Self

Allocate a new list with a specified capacity.

pub fn push(&mut self, offset: usize)

Inserts the offset, as a u32 if that is still on the table.

pub fn index(&self, index: usize) -> usize

Like std::ops::Index, which we cannot implement as it must return a &usize.

pub fn len(&self) -> usize

The number of offsets in the list.

Trait Implementations

impl Abomonation for OffsetList

unsafe fn entomb<W: Write>(&self, _write: &mut W) -> Result<()>

Write any additional information about &self beyond its binary representation.

fn extent(&self) -> usize

Reports the number of further bytes required to entomb self.

unsafe fn exhume<'a, 'b>( &'a mut self, bytes: &'b mut [u8] ) -> Option<&'b mut [u8]>

Recover any information for &mut self not evident from its binary representation.

impl BatchContainer for OffsetList

type PushItem = usize

The type of contained item.

type ReadItem<'a> = Wrapper<usize>

The type that can be read back out of the container.

fn push(&mut self, item: Self::PushItem)

Inserts an owned item.

fn copy_push(&mut self, item: &Self::PushItem)

Inserts an owned item.

fn copy(&mut self, item: Self::ReadItem<'_>)

Inserts a borrowed item.

fn copy_range(&mut self, other: &Self, start: usize, end: usize)

Extends from a range of items in anotherSelf.

fn with_capacity(size: usize) -> Self

Creates a new container with sufficient capacity.

fn merge_capacity(cont1: &Self, cont2: &Self) -> Self

Creates a new container with sufficient capacity.

fn index(&self, index: usize) -> Self::ReadItem<'_>

Reference to the element at this position.

fn len(&self) -> usize

Number of contained elements

fn last(&self) -> Option<Self::ReadItem<'_>>

Returns the last item if the container is non-empty.

fn is_empty(&self) -> bool

Indicates if the length is zero.

fn advance<F: for<'a> Fn(Self::ReadItem<'a>) -> bool>( &self, start: usize, end: usize, function: F ) -> usize

Reports the number of elements satisfing the predicate.

impl Clone for OffsetList

fn clone(&self) -> OffsetList

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for OffsetList

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

Formats the value using the given formatter.

impl Ord for OffsetList

fn cmp(&self, other: &OffsetList) -> 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 + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for OffsetList

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd for OffsetList

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl Eq for OffsetList

impl StructuralPartialEq for OffsetList