dd3c6d1303After some discussion with PVH I realise that the repo structure in the last reorg was very rust-centric. In an attempt to put each language on a level footing move the rust code and project files into ./rust
40 lines
1 KiB
Rust
40 lines
1 KiB
Rust
use std::{borrow::Cow, ops::Range};
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use crate::columnar::encoding::{BooleanDecoder, BooleanEncoder};
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#[derive(Clone, Debug, PartialEq)]
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pub(crate) struct BooleanRange(Range<usize>);
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impl BooleanRange {
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pub(crate) fn decoder<'a>(&self, data: &'a [u8]) -> BooleanDecoder<'a> {
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BooleanDecoder::from(Cow::Borrowed(&data[self.0.clone()]))
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}
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pub(crate) fn encode<I: Iterator<Item = bool>>(items: I, out: &mut Vec<u8>) -> Self {
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let start = out.len();
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let mut encoder = BooleanEncoder::from(out);
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for i in items {
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encoder.append(i);
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}
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let (_, len) = encoder.finish();
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(start..(start + len)).into()
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}
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}
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impl AsRef<Range<usize>> for BooleanRange {
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fn as_ref(&self) -> &Range<usize> {
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&self.0
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}
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}
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impl From<Range<usize>> for BooleanRange {
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fn from(r: Range<usize>) -> BooleanRange {
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BooleanRange(r)
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}
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}
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impl From<BooleanRange> for Range<usize> {
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fn from(r: BooleanRange) -> Range<usize> {
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r.0
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}
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}
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