1 files changed, 45 insertions, 0 deletions
diff --git a/vendor/fixedbitset/src/range.rs b/vendor/fixedbitset/src/range.rs
new file mode 100644
index 00000000..9b385c42
--- /dev/null
+++ b/vendor/fixedbitset/src/range.rs
@@ -0,0 +1,45 @@
+use core::ops::{Range, RangeFrom, RangeFull, RangeTo};
+
+// Taken from https://github.com/bluss/odds/blob/master/src/range.rs.
+
+/// **IndexRange** is implemented by Rust's built-in range types, produced
+/// by range syntax like `..`, `a..`, `..b` or `c..d`.
+pub trait IndexRange<T = usize> {
+    #[inline]
+    /// Start index (inclusive)
+    fn start(&self) -> Option<T> {
+        None
+    }
+    #[inline]
+    /// End index (exclusive)
+    fn end(&self) -> Option<T> {
+        None
+    }
+}
+
+impl<T> IndexRange<T> for RangeFull {}
+
+impl<T: Copy> IndexRange<T> for RangeFrom<T> {
+    #[inline]
+    fn start(&self) -> Option<T> {
+        Some(self.start)
+    }
+}
+
+impl<T: Copy> IndexRange<T> for RangeTo<T> {
+    #[inline]
+    fn end(&self) -> Option<T> {
+        Some(self.end)
+    }
+}
+
+impl<T: Copy> IndexRange<T> for Range<T> {
+    #[inline]
+    fn start(&self) -> Option<T> {
+        Some(self.start)
+    }
+    #[inline]
+    fn end(&self) -> Option<T> {
+        Some(self.end)
+    }
+}