From 7690ec89ffeac4b4537e71c980d65ead9177d76c Mon Sep 17 00:00:00 2001
From: Kevin Butler <haqkrs@gmail.com>
Date: Tue, 3 Nov 2015 04:26:45 +0000
Subject: [PATCH] libstd: implement From<&Path|PathBuf> for Cow<Path>

---
 src/libstd/path.rs | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/src/libstd/path.rs b/src/libstd/path.rs
index 0559849f6a6..b3f755a60a5 100644
--- a/src/libstd/path.rs
+++ b/src/libstd/path.rs
@@ -1166,6 +1166,22 @@ impl<'a> IntoCow<'a, Path> for &'a Path {
     }
 }
 
+#[stable(feature = "cow_from_path", since = "1.6.0")]
+impl<'a> From<&'a Path> for Cow<'a, Path> {
+    #[inline]
+    fn from(s: &'a Path) -> Cow<'a, Path> {
+        Cow::Borrowed(s)
+    }
+}
+
+#[stable(feature = "cow_from_path", since = "1.6.0")]
+impl<'a> From<PathBuf> for Cow<'a, Path> {
+    #[inline]
+    fn from(s: PathBuf) -> Cow<'a, Path> {
+        Cow::Owned(s)
+    }
+}
+
 #[stable(feature = "rust1", since = "1.0.0")]
 impl ToOwned for Path {
     type Owned = PathBuf;
@@ -2002,6 +2018,26 @@ mod tests {
         assert_eq!(static_cow_path, owned_cow_path);
     }
 
+    #[test]
+    fn into() {
+        use borrow::Cow;
+
+        let static_path = Path::new("/home/foo");
+        let static_cow_path: Cow<'static, Path> = static_path.into();
+        let pathbuf = PathBuf::from("/home/foo");
+
+        {
+            let path: &Path = &pathbuf;
+            let borrowed_cow_path: Cow<Path> = path.into();
+
+            assert_eq!(static_cow_path, borrowed_cow_path);
+        }
+
+        let owned_cow_path: Cow<'static, Path> = pathbuf.into();
+
+        assert_eq!(static_cow_path, owned_cow_path);
+    }
+
     #[test]
     #[cfg(unix)]
     pub fn test_decompositions_unix() {