Don't recompile the same regex over and over

2014-10-03 21:29:40 +02:00
parent 104e55bb7f
commit 3b5fa8d50c
2 changed files with 8 additions and 3 deletions
@@ -1,6 +1,5 @@
 #include "names.hh"
 #include "util.hh"
-#include "regex.hh"


 namespace nix {
@@ -34,8 +33,8 @@ DrvName::DrvName(const string & s) : hits(0)
 bool DrvName::matches(DrvName & n)
 {
    if (name != "*") {
-        Regex regex(name);
-        if (!regex.matches(n.name)) return false;
+        if (!regex) regex = std::shared_ptr<Regex>(new Regex(name));
+        if (!regex->matches(n.name)) return false;
    }
    if (version != "" && version != n.version) return false;
    return true;