From 6ae005b11e2041beacf4fd3c3d690313863b7bf6 Mon Sep 17 00:00:00 2001
From: Ciaran McCreesh <ciaran.mccreesh@googlemail.com>
Date: Fri, 24 May 2013 00:21:38 +0100
Subject: Convert to fancy new visitors

---
 .../repositories/gemcutter/gemcutter_repository.cc | 54 ++++------------------
 1 file changed, 10 insertions(+), 44 deletions(-)

diff --git a/paludis/repositories/gemcutter/gemcutter_repository.cc b/paludis/repositories/gemcutter/gemcutter_repository.cc
index 4bdad242d..6540fdbd4 100644
--- a/paludis/repositories/gemcutter/gemcutter_repository.cc
+++ b/paludis/repositories/gemcutter/gemcutter_repository.cc
@@ -1,7 +1,7 @@
 /* vim: set sw=4 sts=4 et foldmethod=syntax : */
 
 /*
- * Copyright (c) 2010, 2011 Ciaran McCreesh
+ * Copyright (c) 2010, 2011, 2013 Ciaran McCreesh
  *
  * This file is part of the Paludis package manager. Paludis is free software;
  * you can redistribute it and/or modify it under the terms of the GNU General
@@ -182,52 +182,18 @@ GemcutterRepository::package_ids(const QualifiedPackageName & p, const Repositor
     return _imp->store->package_ids(p);
 }
 
-namespace
-{
-    struct SupportsActionQuery
-    {
-        bool visit(const SupportsActionTest<InstallAction> &) const
-        {
-            return true;
-        }
-
-        bool visit(const SupportsActionTest<FetchAction> &) const
-        {
-            return true;
-        }
-
-        bool visit(const SupportsActionTest<PretendFetchAction> &) const
-        {
-            return false;
-        }
-
-        bool visit(const SupportsActionTest<ConfigAction> &) const
-        {
-            return false;
-        }
-
-        bool visit(const SupportsActionTest<PretendAction> &) const
-        {
-            return false;
-        }
-
-        bool visit(const SupportsActionTest<InfoAction> &) const
-        {
-            return false;
-        }
-
-        bool visit(const SupportsActionTest<UninstallAction> &) const
-        {
-            return false;
-        }
-    };
-}
-
 bool
 GemcutterRepository::some_ids_might_support_action(const SupportsActionTestBase & a) const
 {
-    SupportsActionQuery q;
-    return a.accept_returning<bool>(q);
+    return a.make_accept_returning(
+        [&] (const SupportsActionTest<InstallAction> &)      { return true; },
+        [&] (const SupportsActionTest<FetchAction> &)        { return true; },
+        [&] (const SupportsActionTest<PretendFetchAction> &) { return false; },
+        [&] (const SupportsActionTest<ConfigAction> &)       { return false; },
+        [&] (const SupportsActionTest<PretendAction> &)      { return false; },
+        [&] (const SupportsActionTest<InfoAction> &)         { return false; },
+        [&] (const SupportsActionTest<UninstallAction> &)    { return false; }
+        );
 }
 
 bool
-- 
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