1 files changed, 0 insertions, 178 deletions
diff --git a/vendor/itertools-0.12.1/src/peek_nth.rs b/vendor/itertools-0.12.1/src/peek_nth.rs
deleted file mode 100644
index ff5a55cc..00000000
--- a/vendor/itertools-0.12.1/src/peek_nth.rs
+++ /dev/null
@@ -1,178 +0,0 @@
-use crate::size_hint;
-use crate::PeekingNext;
-use alloc::collections::VecDeque;
-use std::iter::Fuse;
-
-/// See [`peek_nth()`] for more information.
-#[derive(Clone, Debug)]
-#[must_use = "iterator adaptors are lazy and do nothing unless consumed"]
-pub struct PeekNth<I>
-where
-    I: Iterator,
-{
-    iter: Fuse<I>,
-    buf: VecDeque<I::Item>,
-}
-
-/// A drop-in replacement for [`std::iter::Peekable`] which adds a `peek_nth`
-/// method allowing the user to `peek` at a value several iterations forward
-/// without advancing the base iterator.
-///
-/// This differs from `multipeek` in that subsequent calls to `peek` or
-/// `peek_nth` will always return the same value until `next` is called
-/// (making `reset_peek` unnecessary).
-pub fn peek_nth<I>(iterable: I) -> PeekNth<I::IntoIter>
-where
-    I: IntoIterator,
-{
-    PeekNth {
-        iter: iterable.into_iter().fuse(),
-        buf: VecDeque::new(),
-    }
-}
-
-impl<I> PeekNth<I>
-where
-    I: Iterator,
-{
-    /// Works exactly like the `peek` method in `std::iter::Peekable`
-    pub fn peek(&mut self) -> Option<&I::Item> {
-        self.peek_nth(0)
-    }
-
-    /// Works exactly like the `peek_mut` method in `std::iter::Peekable`
-    pub fn peek_mut(&mut self) -> Option<&mut I::Item> {
-        self.peek_nth_mut(0)
-    }
-
-    /// Returns a reference to the `nth` value without advancing the iterator.
-    ///
-    /// # Examples
-    ///
-    /// Basic usage:
-    ///
-    /// ```
-    /// use itertools::peek_nth;
-    ///
-    /// let xs = vec![1, 2, 3];
-    /// let mut iter = peek_nth(xs.into_iter());
-    ///
-    /// assert_eq!(iter.peek_nth(0), Some(&1));
-    /// assert_eq!(iter.next(), Some(1));
-    ///
-    /// // The iterator does not advance even if we call `peek_nth` multiple times
-    /// assert_eq!(iter.peek_nth(0), Some(&2));
-    /// assert_eq!(iter.peek_nth(1), Some(&3));
-    /// assert_eq!(iter.next(), Some(2));
-    ///
-    /// // Calling `peek_nth` past the end of the iterator will return `None`
-    /// assert_eq!(iter.peek_nth(1), None);
-    /// ```
-    pub fn peek_nth(&mut self, n: usize) -> Option<&I::Item> {
-        let unbuffered_items = (n + 1).saturating_sub(self.buf.len());
-
-        self.buf.extend(self.iter.by_ref().take(unbuffered_items));
-
-        self.buf.get(n)
-    }
-
-    /// Returns a mutable reference to the `nth` value without advancing the iterator.
-    ///
-    /// # Examples
-    ///
-    /// Basic usage:
-    ///
-    /// ```
-    /// use itertools::peek_nth;
-    ///
-    /// let xs = vec![1, 2, 3, 4, 5];
-    /// let mut iter = peek_nth(xs.into_iter());
-    ///
-    /// assert_eq!(iter.peek_nth_mut(0), Some(&mut 1));
-    /// assert_eq!(iter.next(), Some(1));
-    ///
-    /// // The iterator does not advance even if we call `peek_nth_mut` multiple times
-    /// assert_eq!(iter.peek_nth_mut(0), Some(&mut 2));
-    /// assert_eq!(iter.peek_nth_mut(1), Some(&mut 3));
-    /// assert_eq!(iter.next(), Some(2));
-    ///
-    /// // Peek into the iterator and set the value behind the mutable reference.
-    /// if let Some(p) = iter.peek_nth_mut(1) {
-    ///     assert_eq!(*p, 4);
-    ///     *p = 9;
-    /// }
-    ///
-    /// // The value we put in reappears as the iterator continues.
-    /// assert_eq!(iter.next(), Some(3));
-    /// assert_eq!(iter.next(), Some(9));
-    ///
-    /// // Calling `peek_nth_mut` past the end of the iterator will return `None`
-    /// assert_eq!(iter.peek_nth_mut(1), None);
-    /// ```
-    pub fn peek_nth_mut(&mut self, n: usize) -> Option<&mut I::Item> {
-        let unbuffered_items = (n + 1).saturating_sub(self.buf.len());
-
-        self.buf.extend(self.iter.by_ref().take(unbuffered_items));
-
-        self.buf.get_mut(n)
-    }
-
-    /// Works exactly like the `next_if` method in `std::iter::Peekable`
-    pub fn next_if(&mut self, func: impl FnOnce(&I::Item) -> bool) -> Option<I::Item> {
-        match self.next() {
-            Some(item) if func(&item) => Some(item),
-            Some(item) => {
-                self.buf.push_front(item);
-                None
-            }
-            _ => None,
-        }
-    }
-
-    /// Works exactly like the `next_if_eq` method in `std::iter::Peekable`
-    pub fn next_if_eq<T>(&mut self, expected: &T) -> Option<I::Item>
-    where
-        T: ?Sized,
-        I::Item: PartialEq<T>,
-    {
-        self.next_if(|next| next == expected)
-    }
-}
-
-impl<I> Iterator for PeekNth<I>
-where
-    I: Iterator,
-{
-    type Item = I::Item;
-
-    fn next(&mut self) -> Option<Self::Item> {
-        self.buf.pop_front().or_else(|| self.iter.next())
-    }
-
-    fn size_hint(&self) -> (usize, Option<usize>) {
-        size_hint::add_scalar(self.iter.size_hint(), self.buf.len())
-    }
-
-    fn fold<B, F>(self, mut init: B, mut f: F) -> B
-    where
-        F: FnMut(B, Self::Item) -> B,
-    {
-        init = self.buf.into_iter().fold(init, &mut f);
-        self.iter.fold(init, f)
-    }
-}
-
-impl<I> ExactSizeIterator for PeekNth<I> where I: ExactSizeIterator {}
-
-impl<I> PeekingNext for PeekNth<I>
-where
-    I: Iterator,
-{
-    fn peeking_next<F>(&mut self, accept: F) -> Option<Self::Item>
-    where
-        F: FnOnce(&Self::Item) -> bool,
-    {
-        self.peek().filter(|item| accept(item))?;
-        self.next()
-    }
-}