From b2db9f3bbeaa26bb63f8adfabf47ff7e068b1952 Mon Sep 17 00:00:00 2001
From: Martin Ling <martin-git@earth.li>
Date: Wed, 12 Nov 2014 11:08:22 +0000
Subject: [PATCH] bindings: Add QuantityFlag::mask_from_flags() method.

---
 bindings/cxx/QuantityFlag_methods.cpp | 8 ++++++++
 bindings/cxx/QuantityFlag_methods.hpp | 4 ++++
 2 files changed, 12 insertions(+)

diff --git a/bindings/cxx/QuantityFlag_methods.cpp b/bindings/cxx/QuantityFlag_methods.cpp
index 0a537907..e822b804 100644
--- a/bindings/cxx/QuantityFlag_methods.cpp
+++ b/bindings/cxx/QuantityFlag_methods.cpp
@@ -11,3 +11,11 @@ vector<const QuantityFlag *>
     }
     return result;
 }
+
+unsigned int QuantityFlag::mask_from_flags(vector<const QuantityFlag *> flags)
+{
+    unsigned int result = 0;
+    for (auto flag : flags)
+        result |= flag->id();
+    return result;
+}
diff --git a/bindings/cxx/QuantityFlag_methods.hpp b/bindings/cxx/QuantityFlag_methods.hpp
index dfb3c1e8..d07c37a1 100644
--- a/bindings/cxx/QuantityFlag_methods.hpp
+++ b/bindings/cxx/QuantityFlag_methods.hpp
@@ -1,3 +1,7 @@
 	/** Get flags corresponding to a bitmask. */
 	static vector<const QuantityFlag *>
 		flags_from_mask(unsigned int mask);
+
+	/** Get bitmask corresponding to a set of flags. */
+	static unsigned int mask_from_flags(
+		vector<const QuantityFlag *> flags);