chore: add vendor directory

1 files changed, 319 insertions, 0 deletions

diff --git a/vendor/itertools/src/free.rs b/vendor/itertools/src/free.rs
new file mode 100644
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--- /dev/null
+++ b/vendor/itertools/src/free.rs
@@ -0,0 +1,319 @@
+//! Free functions that create iterator adaptors or call iterator methods.
+//!
+//! The benefit of free functions is that they accept any [`IntoIterator`] as
+//! argument, so the resulting code may be easier to read.
+
+#[cfg(feature = "use_alloc")]
+use std::fmt::Display;
+use std::iter::{self, Zip};
+#[cfg(feature = "use_alloc")]
+type VecIntoIter<T> = alloc::vec::IntoIter<T>;
+
+#[cfg(feature = "use_alloc")]
+use alloc::string::String;
+
+use crate::intersperse::{Intersperse, IntersperseWith};
+use crate::Itertools;
+
+pub use crate::adaptors::{interleave, put_back};
+#[cfg(feature = "use_alloc")]
+pub use crate::kmerge_impl::kmerge;
+pub use crate::merge_join::{merge, merge_join_by};
+#[cfg(feature = "use_alloc")]
+pub use crate::multipeek_impl::multipeek;
+#[cfg(feature = "use_alloc")]
+pub use crate::peek_nth::peek_nth;
+#[cfg(feature = "use_alloc")]
+pub use crate::put_back_n_impl::put_back_n;
+#[cfg(feature = "use_alloc")]
+pub use crate::rciter_impl::rciter;
+pub use crate::zip_eq_impl::zip_eq;
+
+/// Iterate `iterable` with a particular value inserted between each element.
+///
+/// [`IntoIterator`] enabled version of [`Iterator::intersperse`].
+///
+/// ```
+/// use itertools::intersperse;
+///
+/// itertools::assert_equal(intersperse(0..3, 8), vec![0, 8, 1, 8, 2]);
+/// ```
+pub fn intersperse<I>(iterable: I, element: I::Item) -> Intersperse<I::IntoIter>
+where
+    I: IntoIterator,
+    <I as IntoIterator>::Item: Clone,
+{
+    Itertools::intersperse(iterable.into_iter(), element)
+}
+
+/// Iterate `iterable` with a particular value created by a function inserted
+/// between each element.
+///
+/// [`IntoIterator`] enabled version of [`Iterator::intersperse_with`].
+///
+/// ```
+/// use itertools::intersperse_with;
+///
+/// let mut i = 10;
+/// itertools::assert_equal(intersperse_with(0..3, || { i -= 1; i }), vec![0, 9, 1, 8, 2]);
+/// assert_eq!(i, 8);
+/// ```
+pub fn intersperse_with<I, F>(iterable: I, element: F) -> IntersperseWith<I::IntoIter, F>
+where
+    I: IntoIterator,
+    F: FnMut() -> I::Item,
+{
+    Itertools::intersperse_with(iterable.into_iter(), element)
+}
+
+/// Iterate `iterable` with a running index.
+///
+/// [`IntoIterator`] enabled version of [`Iterator::enumerate`].
+///
+/// ```
+/// use itertools::enumerate;
+///
+/// for (i, elt) in enumerate(&[1, 2, 3]) {
+///     /* loop body */
+///     # let _ = (i, elt);
+/// }
+/// ```
+pub fn enumerate<I>(iterable: I) -> iter::Enumerate<I::IntoIter>
+where
+    I: IntoIterator,
+{
+    iterable.into_iter().enumerate()
+}
+
+/// Iterate `iterable` in reverse.
+///
+/// [`IntoIterator`] enabled version of [`Iterator::rev`].
+///
+/// ```
+/// use itertools::rev;
+///
+/// for elt in rev(&[1, 2, 3]) {
+///     /* loop body */
+///     # let _ = elt;
+/// }
+/// ```
+pub fn rev<I>(iterable: I) -> iter::Rev<I::IntoIter>
+where
+    I: IntoIterator,
+    I::IntoIter: DoubleEndedIterator,
+{
+    iterable.into_iter().rev()
+}
+
+/// Converts the arguments to iterators and zips them.
+///
+/// [`IntoIterator`] enabled version of [`Iterator::zip`].
+///
+/// ## Example
+///
+/// ```
+/// use itertools::zip;
+///
+/// let mut result: Vec<(i32, char)> = Vec::new();
+///
+/// for (a, b) in zip(&[1, 2, 3, 4, 5], &['a', 'b', 'c']) {
+///     result.push((*a, *b));
+/// }
+/// assert_eq!(result, vec![(1, 'a'),(2, 'b'),(3, 'c')]);
+/// ```
+#[deprecated(
+    note = "Use [std::iter::zip](https://doc.rust-lang.org/std/iter/fn.zip.html) instead",
+    since = "0.10.4"
+)]
+pub fn zip<I, J>(i: I, j: J) -> Zip<I::IntoIter, J::IntoIter>
+where
+    I: IntoIterator,
+    J: IntoIterator,
+{
+    i.into_iter().zip(j)
+}
+
+/// Takes two iterables and creates a new iterator over both in sequence.
+///
+/// [`IntoIterator`] enabled version of [`Iterator::chain`].
+///
+/// ## Example
+/// ```
+/// use itertools::chain;
+///
+/// let mut result:Vec<i32> = Vec::new();
+///
+/// for element in chain(&[1, 2, 3], &[4]) {
+///     result.push(*element);
+/// }
+/// assert_eq!(result, vec![1, 2, 3, 4]);
+/// ```
+pub fn chain<I, J>(
+    i: I,
+    j: J,
+) -> iter::Chain<<I as IntoIterator>::IntoIter, <J as IntoIterator>::IntoIter>
+where
+    I: IntoIterator,
+    J: IntoIterator<Item = I::Item>,
+{
+    i.into_iter().chain(j)
+}
+
+/// Create an iterator that clones each element from `&T` to `T`.
+///
+/// [`IntoIterator`] enabled version of [`Iterator::cloned`].
+///
+/// ```
+/// use itertools::cloned;
+///
+/// assert_eq!(cloned(b"abc").next(), Some(b'a'));
+/// ```
+pub fn cloned<'a, I, T>(iterable: I) -> iter::Cloned<I::IntoIter>
+where
+    I: IntoIterator<Item = &'a T>,
+    T: Clone + 'a,
+{
+    iterable.into_iter().cloned()
+}
+
+/// Perform a fold operation over the iterable.
+///
+/// [`IntoIterator`] enabled version of [`Iterator::fold`].
+///
+/// ```
+/// use itertools::fold;
+///
+/// assert_eq!(fold(&[1., 2., 3.], 0., |a, &b| f32::max(a, b)), 3.);
+/// ```
+pub fn fold<I, B, F>(iterable: I, init: B, f: F) -> B
+where
+    I: IntoIterator,
+    F: FnMut(B, I::Item) -> B,
+{
+    iterable.into_iter().fold(init, f)
+}
+
+/// Test whether the predicate holds for all elements in the iterable.
+///
+/// [`IntoIterator`] enabled version of [`Iterator::all`].
+///
+/// ```
+/// use itertools::all;
+///
+/// assert!(all(&[1, 2, 3], |elt| *elt > 0));
+/// ```
+pub fn all<I, F>(iterable: I, f: F) -> bool
+where
+    I: IntoIterator,
+    F: FnMut(I::Item) -> bool,
+{
+    iterable.into_iter().all(f)
+}
+
+/// Test whether the predicate holds for any elements in the iterable.
+///
+/// [`IntoIterator`] enabled version of [`Iterator::any`].
+///
+/// ```
+/// use itertools::any;
+///
+/// assert!(any(&[0, -1, 2], |elt| *elt > 0));
+/// ```
+pub fn any<I, F>(iterable: I, f: F) -> bool
+where
+    I: IntoIterator,
+    F: FnMut(I::Item) -> bool,
+{
+    iterable.into_iter().any(f)
+}
+
+/// Return the maximum value of the iterable.
+///
+/// [`IntoIterator`] enabled version of [`Iterator::max`].
+///
+/// ```
+/// use itertools::max;
+///
+/// assert_eq!(max(0..10), Some(9));
+/// ```
+pub fn max<I>(iterable: I) -> Option<I::Item>
+where
+    I: IntoIterator,
+    I::Item: Ord,
+{
+    iterable.into_iter().max()
+}
+
+/// Return the minimum value of the iterable.
+///
+/// [`IntoIterator`] enabled version of [`Iterator::min`].
+///
+/// ```
+/// use itertools::min;
+///
+/// assert_eq!(min(0..10), Some(0));
+/// ```
+pub fn min<I>(iterable: I) -> Option<I::Item>
+where
+    I: IntoIterator,
+    I::Item: Ord,
+{
+    iterable.into_iter().min()
+}
+
+/// Combine all iterator elements into one `String`, separated by `sep`.
+///
+/// [`IntoIterator`] enabled version of [`Itertools::join`].
+///
+/// ```
+/// use itertools::join;
+///
+/// assert_eq!(join(&[1, 2, 3], ", "), "1, 2, 3");
+/// ```
+#[cfg(feature = "use_alloc")]
+pub fn join<I>(iterable: I, sep: &str) -> String
+where
+    I: IntoIterator,
+    I::Item: Display,
+{
+    iterable.into_iter().join(sep)
+}
+
+/// Sort all iterator elements into a new iterator in ascending order.
+///
+/// [`IntoIterator`] enabled version of [`Itertools::sorted`].
+///
+/// ```
+/// use itertools::sorted;
+/// use itertools::assert_equal;
+///
+/// assert_equal(sorted("rust".chars()), "rstu".chars());
+/// ```
+#[cfg(feature = "use_alloc")]
+pub fn sorted<I>(iterable: I) -> VecIntoIter<I::Item>
+where
+    I: IntoIterator,
+    I::Item: Ord,
+{
+    iterable.into_iter().sorted()
+}
+
+/// Sort all iterator elements into a new iterator in ascending order.
+/// This sort is unstable (i.e., may reorder equal elements).
+///
+/// [`IntoIterator`] enabled version of [`Itertools::sorted_unstable`].
+///
+/// ```
+/// use itertools::sorted_unstable;
+/// use itertools::assert_equal;
+///
+/// assert_equal(sorted_unstable("rust".chars()), "rstu".chars());
+/// ```
+#[cfg(feature = "use_alloc")]
+pub fn sorted_unstable<I>(iterable: I) -> VecIntoIter<I::Item>
+where
+    I: IntoIterator,
+    I::Item: Ord,
+{
+    iterable.into_iter().sorted_unstable()
+}