From 5ebe1ddc57a96aaf3d9380da54943145d911895b Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Thu, 21 May 2020 18:14:51 -0700
Subject: [PATCH] Impl Ord for LineColumn

---
 src/lib.rs | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/lib.rs b/src/lib.rs
index 4b65794d..f5c787fe 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -317,6 +317,20 @@ pub struct LineColumn {
     pub column: usize,
 }
 
+#[cfg(span_locations)]
+impl Ord for LineColumn {
+    fn cmp(&self, other: &Self) -> Ordering {
+        self.line.cmp(&other.line).then(self.column.cmp(&other.column))
+    }
+}
+
+#[cfg(span_locations)]
+impl PartialOrd for LineColumn {
+    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
+        Some(self.cmp(other))
+    }
+}
+
 /// A region of source code, along with macro expansion information.
 #[derive(Copy, Clone)]
 pub struct Span {