From 3b5fa8d50cd7e4db0691884effcbdc7809ad9ed9 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Fri, 3 Oct 2014 21:29:20 +0200
Subject: Don't recompile the same regex over and over

---
 src/libexpr/names.hh | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src/libexpr/names.hh')

diff --git a/src/libexpr/names.hh b/src/libexpr/names.hh
index ebe113e82..4b3dcddf7 100644
--- a/src/libexpr/names.hh
+++ b/src/libexpr/names.hh
@@ -1,6 +1,9 @@
 #pragma once
 
+#include <memory>
+
 #include "types.hh"
+#include "regex.hh"
 
 namespace nix {
 
@@ -14,6 +17,9 @@ struct DrvName
     DrvName();
     DrvName(const string & s);
     bool matches(DrvName & n);
+
+private:
+    std::shared_ptr<Regex> regex;
 };
 
 typedef list<DrvName> DrvNames;
-- 
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