From a199a557c732af8ec52f52b35d4b81673d607791 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Fri, 21 Oct 2016 17:38:25 +0200
Subject: Add location::empty() predicate

---
 build2/diagnostics | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'build2/diagnostics')

diff --git a/build2/diagnostics b/build2/diagnostics
index 5441df1..091b313 100644
--- a/build2/diagnostics
+++ b/build2/diagnostics
@@ -286,6 +286,9 @@ namespace build2
     location (const path* f, uint64_t l = 0, uint64_t c = 0)
         : file (f), line (l), column (c) {}
 
+    bool
+    empty () const {return file == nullptr;}
+
     const path* file;
     uint64_t line;
     uint64_t column;
-- 
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