From b5099a708d67ed165c5ebcfc2c55b1cdf2ad86bc Mon Sep 17 00:00:00 2001
From: Seiichi Uchida <seuchida@gmail.com>
Date: Sun, 4 Feb 2018 21:19:14 +0900
Subject: Replace dummy spans with empty spans

---
 src/libsyntax_pos/lib.rs | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src/libsyntax_pos')

diff --git a/src/libsyntax_pos/lib.rs b/src/libsyntax_pos/lib.rs
index 294506625bc..f9e01b630ae 100644
--- a/src/libsyntax_pos/lib.rs
+++ b/src/libsyntax_pos/lib.rs
@@ -216,6 +216,12 @@ impl Span {
         self.data().with_ctxt(ctxt)
     }
 
+    /// Returns a new span representing an empty span at the beginning of this span
+    #[inline]
+    pub fn empty(self) -> Span {
+        span.with_hi(self.lo())
+    }
+
     /// Returns `self` if `self` is not the dummy span, and `other` otherwise.
     pub fn substitute_dummy(self, other: Span) -> Span {
         if self.source_equal(&DUMMY_SP) { other } else { self }
-- 
cgit 1.4.1-3-g733a5