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authorValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
committerValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
commita990de90fe41456a23e58bd087d2f107d321f3a1 (patch)
tree15afc392522a9e85dc3332235e311b7d39352ea9 /vendor/rayon/src/split_producer.rs
parent3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff)
downloadfparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz
fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip
Deleted vendor folder
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-rw-r--r--vendor/rayon/src/split_producer.rs132
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diff --git a/vendor/rayon/src/split_producer.rs b/vendor/rayon/src/split_producer.rs
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--- a/vendor/rayon/src/split_producer.rs
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-//! Common splitter for strings and slices
-//!
-//! This module is private, so these items are effectively `pub(super)`
-
-use crate::iter::plumbing::{Folder, UnindexedProducer};
-
-/// Common producer for splitting on a predicate.
-pub(super) struct SplitProducer<'p, P, V> {
- data: V,
- separator: &'p P,
-
- /// Marks the endpoint beyond which we've already found no separators.
- tail: usize,
-}
-
-/// Helper trait so `&str`, `&[T]`, and `&mut [T]` can share `SplitProducer`.
-pub(super) trait Fissile<P>: Sized {
- fn length(&self) -> usize;
- fn midpoint(&self, end: usize) -> usize;
- fn find(&self, separator: &P, start: usize, end: usize) -> Option<usize>;
- fn rfind(&self, separator: &P, end: usize) -> Option<usize>;
- fn split_once(self, index: usize) -> (Self, Self);
- fn fold_splits<F>(self, separator: &P, folder: F, skip_last: bool) -> F
- where
- F: Folder<Self>,
- Self: Send;
-}
-
-impl<'p, P, V> SplitProducer<'p, P, V>
-where
- V: Fissile<P> + Send,
-{
- pub(super) fn new(data: V, separator: &'p P) -> Self {
- SplitProducer {
- tail: data.length(),
- data,
- separator,
- }
- }
-
- /// Common `fold_with` implementation, integrating `SplitTerminator`'s
- /// need to sometimes skip its final empty item.
- pub(super) fn fold_with<F>(self, folder: F, skip_last: bool) -> F
- where
- F: Folder<V>,
- {
- let SplitProducer {
- data,
- separator,
- tail,
- } = self;
-
- if tail == data.length() {
- // No tail section, so just let `fold_splits` handle it.
- data.fold_splits(separator, folder, skip_last)
- } else if let Some(index) = data.rfind(separator, tail) {
- // We found the last separator to complete the tail, so
- // end with that slice after `fold_splits` finds the rest.
- let (left, right) = data.split_once(index);
- let folder = left.fold_splits(separator, folder, false);
- if skip_last || folder.full() {
- folder
- } else {
- folder.consume(right)
- }
- } else {
- // We know there are no separators at all. Return our whole data.
- if skip_last {
- folder
- } else {
- folder.consume(data)
- }
- }
- }
-}
-
-impl<'p, P, V> UnindexedProducer for SplitProducer<'p, P, V>
-where
- V: Fissile<P> + Send,
- P: Sync,
-{
- type Item = V;
-
- fn split(self) -> (Self, Option<Self>) {
- // Look forward for the separator, and failing that look backward.
- let mid = self.data.midpoint(self.tail);
- let index = match self.data.find(self.separator, mid, self.tail) {
- Some(i) => Some(mid + i),
- None => self.data.rfind(self.separator, mid),
- };
-
- if let Some(index) = index {
- let len = self.data.length();
- let (left, right) = self.data.split_once(index);
-
- let (left_tail, right_tail) = if index < mid {
- // If we scanned backwards to find the separator, everything in
- // the right side is exhausted, with no separators left to find.
- (index, 0)
- } else {
- let right_index = len - right.length();
- (mid, self.tail - right_index)
- };
-
- // Create the left split before the separator.
- let left = SplitProducer {
- data: left,
- tail: left_tail,
- ..self
- };
-
- // Create the right split following the separator.
- let right = SplitProducer {
- data: right,
- tail: right_tail,
- ..self
- };
-
- (left, Some(right))
- } else {
- // The search is exhausted, no more separators...
- (SplitProducer { tail: 0, ..self }, None)
- }
- }
-
- fn fold_with<F>(self, folder: F) -> F
- where
- F: Folder<Self::Item>,
- {
- self.fold_with(folder, false)
- }
-}