1 files changed, 41 insertions, 0 deletions
diff --git a/vendor/writeable/src/either.rs b/vendor/writeable/src/either.rs
new file mode 100644
index 00000000..67be94f5
--- /dev/null
+++ b/vendor/writeable/src/either.rs
@@ -0,0 +1,41 @@
+// This file is part of ICU4X. For terms of use, please see the file
+// called LICENSE at the top level of the ICU4X source tree
+// (online at: https://github.com/unicode-org/icu4x/blob/main/LICENSE ).
+
+use crate::*;
+use ::either::Either;
+
+/// A [`Writeable`] impl that delegates to one type or another type.
+impl<W0, W1> Writeable for Either<W0, W1>
+where
+    W0: Writeable,
+    W1: Writeable,
+{
+    fn write_to<W: fmt::Write + ?Sized>(&self, sink: &mut W) -> fmt::Result {
+        match self {
+            Either::Left(w) => w.write_to(sink),
+            Either::Right(w) => w.write_to(sink),
+        }
+    }
+
+    fn write_to_parts<S: PartsWrite + ?Sized>(&self, sink: &mut S) -> fmt::Result {
+        match self {
+            Either::Left(w) => w.write_to_parts(sink),
+            Either::Right(w) => w.write_to_parts(sink),
+        }
+    }
+
+    fn writeable_length_hint(&self) -> LengthHint {
+        match self {
+            Either::Left(w) => w.writeable_length_hint(),
+            Either::Right(w) => w.writeable_length_hint(),
+        }
+    }
+
+    fn write_to_string(&self) -> Cow<str> {
+        match self {
+            Either::Left(w) => w.write_to_string(),
+            Either::Right(w) => w.write_to_string(),
+        }
+    }
+}