1 files changed, 64 insertions, 0 deletions
diff --git a/vendor/either/src/into_either.rs b/vendor/either/src/into_either.rs
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+++ b/vendor/either/src/into_either.rs
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+//! The trait [`IntoEither`] provides methods for converting a type `Self`, whose
+//! size is constant and known at compile-time, into an [`Either`] variant.
+
+use super::{Either, Left, Right};
+
+/// Provides methods for converting a type `Self` into either a [`Left`] or [`Right`]
+/// variant of [`Either<Self, Self>`](Either).
+///
+/// The [`into_either`](IntoEither::into_either) method takes a [`bool`] to determine
+/// whether to convert to [`Left`] or [`Right`].
+///
+/// The [`into_either_with`](IntoEither::into_either_with) method takes a
+/// [predicate function](FnOnce) to determine whether to convert to [`Left`] or [`Right`].
+pub trait IntoEither: Sized {
+    /// Converts `self` into a [`Left`] variant of [`Either<Self, Self>`](Either)
+    /// if `into_left` is `true`.
+    /// Converts `self` into a [`Right`] variant of [`Either<Self, Self>`](Either)
+    /// otherwise.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use either::{IntoEither, Left, Right};
+    ///
+    /// let x = 0;
+    /// assert_eq!(x.into_either(true), Left(x));
+    /// assert_eq!(x.into_either(false), Right(x));
+    /// ```
+    fn into_either(self, into_left: bool) -> Either<Self, Self> {
+        if into_left {
+            Left(self)
+        } else {
+            Right(self)
+        }
+    }
+
+    /// Converts `self` into a [`Left`] variant of [`Either<Self, Self>`](Either)
+    /// if `into_left(&self)` returns `true`.
+    /// Converts `self` into a [`Right`] variant of [`Either<Self, Self>`](Either)
+    /// otherwise.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use either::{IntoEither, Left, Right};
+    ///
+    /// fn is_even(x: &u8) -> bool {
+    ///     x % 2 == 0
+    /// }
+    ///
+    /// let x = 0;
+    /// assert_eq!(x.into_either_with(is_even), Left(x));
+    /// assert_eq!(x.into_either_with(|x| !is_even(x)), Right(x));
+    /// ```
+    fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
+    where
+        F: FnOnce(&Self) -> bool,
+    {
+        let into_left = into_left(&self);
+        self.into_either(into_left)
+    }
+}
+
+impl<T> IntoEither for T {}