From 1b6a04ca5504955c571d1c97504fb45ea0befee4 Mon Sep 17 00:00:00 2001
From: Valentin Popov <valentin@popov.link>
Date: Mon, 8 Jan 2024 01:21:28 +0400
Subject: Initial vendor packages

Signed-off-by: Valentin Popov <valentin@popov.link>
---
 vendor/indicatif/src/rayon.rs | 235 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 235 insertions(+)
 create mode 100644 vendor/indicatif/src/rayon.rs

(limited to 'vendor/indicatif/src/rayon.rs')

diff --git a/vendor/indicatif/src/rayon.rs b/vendor/indicatif/src/rayon.rs
new file mode 100644
index 0000000..1c8e844
--- /dev/null
+++ b/vendor/indicatif/src/rayon.rs
@@ -0,0 +1,235 @@
+use rayon::iter::plumbing::{Consumer, Folder, Producer, ProducerCallback, UnindexedConsumer};
+use rayon::iter::{IndexedParallelIterator, ParallelIterator};
+
+use crate::{ProgressBar, ProgressBarIter};
+
+/// Wraps a Rayon parallel iterator.
+///
+/// See [`ProgressIterator`](trait.ProgressIterator.html) for method
+/// documentation.
+#[cfg_attr(docsrs, doc(cfg(feature = "rayon")))]
+pub trait ParallelProgressIterator
+where
+    Self: Sized + ParallelIterator,
+{
+    /// Wrap an iterator with a custom progress bar.
+    fn progress_with(self, progress: ProgressBar) -> ProgressBarIter<Self>;
+
+    /// Wrap an iterator with an explicit element count.
+    fn progress_count(self, len: u64) -> ProgressBarIter<Self> {
+        self.progress_with(ProgressBar::new(len))
+    }
+
+    fn progress(self) -> ProgressBarIter<Self>
+    where
+        Self: IndexedParallelIterator,
+    {
+        let len = u64::try_from(self.len()).unwrap();
+        self.progress_count(len)
+    }
+
+    /// Wrap an iterator with a progress bar and style it.
+    fn progress_with_style(self, style: crate::ProgressStyle) -> ProgressBarIter<Self>
+    where
+        Self: IndexedParallelIterator,
+    {
+        let len = u64::try_from(self.len()).unwrap();
+        let bar = ProgressBar::new(len).with_style(style);
+        self.progress_with(bar)
+    }
+}
+
+impl<S: Send, T: ParallelIterator<Item = S>> ParallelProgressIterator for T {
+    fn progress_with(self, progress: ProgressBar) -> ProgressBarIter<Self> {
+        ProgressBarIter { it: self, progress }
+    }
+}
+
+impl<S: Send, T: IndexedParallelIterator<Item = S>> IndexedParallelIterator for ProgressBarIter<T> {
+    fn len(&self) -> usize {
+        self.it.len()
+    }
+
+    fn drive<C: Consumer<Self::Item>>(self, consumer: C) -> <C as Consumer<Self::Item>>::Result {
+        let consumer = ProgressConsumer::new(consumer, self.progress);
+        self.it.drive(consumer)
+    }
+
+    fn with_producer<CB: ProducerCallback<Self::Item>>(
+        self,
+        callback: CB,
+    ) -> <CB as ProducerCallback<Self::Item>>::Output {
+        return self.it.with_producer(Callback {
+            callback,
+            progress: self.progress,
+        });
+
+        struct Callback<CB> {
+            callback: CB,
+            progress: ProgressBar,
+        }
+
+        impl<T, CB: ProducerCallback<T>> ProducerCallback<T> for Callback<CB> {
+            type Output = CB::Output;
+
+            fn callback<P>(self, base: P) -> CB::Output
+            where
+                P: Producer<Item = T>,
+            {
+                let producer = ProgressProducer {
+                    base,
+                    progress: self.progress,
+                };
+                self.callback.callback(producer)
+            }
+        }
+    }
+}
+
+struct ProgressProducer<T> {
+    base: T,
+    progress: ProgressBar,
+}
+
+impl<T, P: Producer<Item = T>> Producer for ProgressProducer<P> {
+    type Item = T;
+    type IntoIter = ProgressBarIter<P::IntoIter>;
+
+    fn into_iter(self) -> Self::IntoIter {
+        ProgressBarIter {
+            it: self.base.into_iter(),
+            progress: self.progress,
+        }
+    }
+
+    fn min_len(&self) -> usize {
+        self.base.min_len()
+    }
+
+    fn max_len(&self) -> usize {
+        self.base.max_len()
+    }
+
+    fn split_at(self, index: usize) -> (Self, Self) {
+        let (left, right) = self.base.split_at(index);
+        (
+            ProgressProducer {
+                base: left,
+                progress: self.progress.clone(),
+            },
+            ProgressProducer {
+                base: right,
+                progress: self.progress,
+            },
+        )
+    }
+}
+
+struct ProgressConsumer<C> {
+    base: C,
+    progress: ProgressBar,
+}
+
+impl<C> ProgressConsumer<C> {
+    fn new(base: C, progress: ProgressBar) -> Self {
+        ProgressConsumer { base, progress }
+    }
+}
+
+impl<T, C: Consumer<T>> Consumer<T> for ProgressConsumer<C> {
+    type Folder = ProgressFolder<C::Folder>;
+    type Reducer = C::Reducer;
+    type Result = C::Result;
+
+    fn split_at(self, index: usize) -> (Self, Self, Self::Reducer) {
+        let (left, right, reducer) = self.base.split_at(index);
+        (
+            ProgressConsumer::new(left, self.progress.clone()),
+            ProgressConsumer::new(right, self.progress),
+            reducer,
+        )
+    }
+
+    fn into_folder(self) -> Self::Folder {
+        ProgressFolder {
+            base: self.base.into_folder(),
+            progress: self.progress,
+        }
+    }
+
+    fn full(&self) -> bool {
+        self.base.full()
+    }
+}
+
+impl<T, C: UnindexedConsumer<T>> UnindexedConsumer<T> for ProgressConsumer<C> {
+    fn split_off_left(&self) -> Self {
+        ProgressConsumer::new(self.base.split_off_left(), self.progress.clone())
+    }
+
+    fn to_reducer(&self) -> Self::Reducer {
+        self.base.to_reducer()
+    }
+}
+
+struct ProgressFolder<C> {
+    base: C,
+    progress: ProgressBar,
+}
+
+impl<T, C: Folder<T>> Folder<T> for ProgressFolder<C> {
+    type Result = C::Result;
+
+    fn consume(self, item: T) -> Self {
+        self.progress.inc(1);
+        ProgressFolder {
+            base: self.base.consume(item),
+            progress: self.progress,
+        }
+    }
+
+    fn complete(self) -> C::Result {
+        self.base.complete()
+    }
+
+    fn full(&self) -> bool {
+        self.base.full()
+    }
+}
+
+impl<S: Send, T: ParallelIterator<Item = S>> ParallelIterator for ProgressBarIter<T> {
+    type Item = S;
+
+    fn drive_unindexed<C: UnindexedConsumer<Self::Item>>(self, consumer: C) -> C::Result {
+        let consumer1 = ProgressConsumer::new(consumer, self.progress.clone());
+        self.it.drive_unindexed(consumer1)
+    }
+}
+
+#[cfg(test)]
+mod test {
+    use rayon::iter::{IntoParallelRefIterator, ParallelIterator};
+
+    use crate::{ParallelProgressIterator, ProgressBar, ProgressBarIter, ProgressStyle};
+
+    #[test]
+    fn it_can_wrap_a_parallel_iterator() {
+        let v = vec![1, 2, 3];
+        fn wrap<'a, T: ParallelIterator<Item = &'a i32>>(it: ProgressBarIter<T>) {
+            assert_eq!(it.map(|x| x * 2).collect::<Vec<_>>(), vec![2, 4, 6]);
+        }
+
+        wrap(v.par_iter().progress_count(3));
+        wrap({
+            let pb = ProgressBar::new(v.len() as u64);
+            v.par_iter().progress_with(pb)
+        });
+
+        wrap({
+            let style = ProgressStyle::default_bar()
+                .template("{wide_bar:.red} {percent}/100%")
+                .unwrap();
+            v.par_iter().progress_with_style(style)
+        });
+    }
+}
-- 
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